good quadreg 0.92 r2

main_hypot/best_model_and_plots.py

@@ -1,43 +1,66 @@
 import sqlite3
 from pathlib import Path
 import sys
+from typing import Tuple
 
 import matplotlib.pyplot as plt
+from scipy.signal import savgol_filter
 import pandas as pd
 import seaborn as sns
 from statsmodels.nonparametric.smoothers_lowess import lowess
+import numpy as np
 
 sns.set_theme(style="whitegrid")
-plt.rcParams["figure.figsize"] = (10, 6)
+plt.rcParams["figure.figsize"] = (8, 8)
 
 project_root = Path(__file__).resolve().parent.parent
-sys.path.append(str(project_root / "preanalysis_old_bad"))
-import eda_utils as eda  # noqa: E402
-
 DB_PATH = project_root / "dataset" / "ds.sqlite"
-OUT_DIR = project_root / "main_hypot"
-X_COL = "avg_imp_per_day"
-Y_COL = "orders_amt_total"
-X_MAX = 18  # обрезаем длинный хвост по показам, чтобы облака было легче читать
-SCATTER_COLOR = "#2c7bb6"
+BASE_OUT_DIR = project_root / "main_hypot"
+
+# Константы данных
+CATEGORIES = ["ent", "super", "transport", "shopping", "hotel", "avia"]
+ACTIVE_IMP_COLS = [f"active_imp_{c}" for c in CATEGORIES]
+PASSIVE_IMP_COLS = [f"passive_imp_{c}" for c in CATEGORIES]
+ORDER_COLS = [f"orders_amt_{c}" for c in CATEGORIES]
+
+# Константы визуализации/очистки
+X_COL = "avg_imp_per_day"  # x всегда фиксирован
+DEFAULT_X_MAX = 18
+DEFAULT_SCATTER_COLOR = "#2c7bb6"
+DEFAULT_POINT_SIZE = 20
+DEFAULT_ALPHA = 0.08
+DEFAULT_TREND_ALPHA = 0.1
+DEFAULT_TREND_FRAC = 0.3
+DEFAULT_TREND_COLOR = "red"
+DEFAULT_TREND_LINEWIDTH = 2.5
+DEFAULT_IQR_K = 1.5
+DEFAULT_Q_LOW = 0.05
+DEFAULT_Q_HIGH = 0.95
+DEFAULT_ALPHA_MIN = 0.04
+DEFAULT_ALPHA_MAX = 0.7
+DEFAULT_BINS_X = 60
+DEFAULT_BINS_Y = 60
+DEFAULT_Y_MIN = -0.5
+DEFAULT_Y_MAX = 10
+DEFAULT_TREND_METHOD = "savgol"  # options: lowess, rolling, savgol
+DEFAULT_ROLLING_WINDOW = 200
+DEFAULT_SAVGOL_WINDOW = 501
+DEFAULT_SAVGOL_POLY = 2
+
+
+def safe_divide(numerator: pd.Series, denominator: pd.Series) -> pd.Series:
+    denom = denominator.replace(0, pd.NA)
+    return numerator / denom
 
 
 def load_client_level(db_path: Path) -> pd.DataFrame:
-    """Собирает агрегаты по клиентам без усреднения по x."""
+    """Собирает агрегаты по клиентам без зависимостей от eda_utils."""
     conn = sqlite3.connect(db_path)
     df = pd.read_sql_query("select * from communications", conn, parse_dates=["business_dt"])
     conn.close()
 
-    for cols, name in [
-        (eda.ACTIVE_IMP_COLS, "active_imp_total"),
-        (eda.PASSIVE_IMP_COLS, "passive_imp_total"),
-        (eda.ACTIVE_CLICK_COLS, "active_click_total"),
-        (eda.PASSIVE_CLICK_COLS, "passive_click_total"),
-        (eda.ORDER_COLS, "orders_amt_total"),
-    ]:
-        df[name] = df[cols].sum(axis=1)
-
-    df["imp_total"] = df["active_imp_total"] + df["passive_imp_total"]
+    df["imp_total"] = df[ACTIVE_IMP_COLS + PASSIVE_IMP_COLS].sum(axis=1)
+    df["orders_amt_total"] = df[ORDER_COLS].sum(axis=1)
 
     client = (
         df.groupby("id")
@@ -49,94 +72,503 @@ def load_client_level(db_path: Path) -> pd.DataFrame:
         .reset_index()
     )
 
-    client[X_COL] = eda.safe_divide(client["imp_total"], client["contact_days"])
-    client[Y_COL] = client["orders_amt_total"]
-    client = client[["id", X_COL, Y_COL]].dropna()
-
-    in_range = client[client[X_COL] <= X_MAX].copy()
-    print(f"Loaded {len(client)} clients; {len(in_range)} within x<={X_MAX} kept for plotting.")
-    return in_range
+    client[X_COL] = safe_divide(client["imp_total"], client["contact_days"])
+    print(f"Loaded {len(client)} clients with {X_COL} computed.")
+    return client
 
 
-def remove_outliers(df: pd.DataFrame, iqr_k: float = 1.5) -> pd.DataFrame:
+def _bounds(series: pd.Series, q_low: float, q_high: float, iqr_k: float) -> Tuple[float, float]:
+    q1, q3 = series.quantile([q_low, q_high])
+    iqr = q3 - q1
+    return q1 - iqr_k * iqr, q3 + iqr_k * iqr
+
+
+def remove_outliers(
+    df: pd.DataFrame,
+    y_col: str,
+    x_col: str = X_COL,
+    iqr_k: float = DEFAULT_IQR_K,
+    q_low: float = DEFAULT_Q_LOW,
+    q_high: float = DEFAULT_Q_HIGH,
+) -> pd.DataFrame:
     """Убирает выбросы по IQR отдельно по x и y."""
-    def bounds(series: pd.Series) -> tuple[float, float]:
-        q1, q3 = series.quantile([0.05, 0.95])
-        iqr = q3 - q1
-        return q1 - iqr_k * iqr, q3 + iqr_k * iqr
-
-    x_low, x_high = bounds(df[X_COL])
-    y_low, y_high = bounds(df[Y_COL])
+    x_low, x_high = _bounds(df[x_col], q_low, q_high, iqr_k)
+    y_low, y_high = _bounds(df[y_col], q_low, q_high, iqr_k)
     filtered = df[
-        df[X_COL].between(max(0, x_low), x_high)
-        & df[Y_COL].between(max(0, y_low), y_high)
+        df[x_col].between(max(0, x_low), x_high)
+        & df[y_col].between(max(0, y_low), y_high)
     ].copy()
-    print(f"Outlier cleaning: {len(df)} -> {len(filtered)} points (IQR k={iqr_k}).")
+    print(f"Outlier cleaning: {len(df)} -> {len(filtered)} points (IQR k={iqr_k}, q=({q_low},{q_high})).")
     return filtered
 
 
+def compute_density_alpha(
+    df: pd.DataFrame,
+    x_col: str,
+    y_col: str,
+    x_max: float,
+    *,
+    bins_x: int = DEFAULT_BINS_X,
+    bins_y: int = DEFAULT_BINS_Y,
+    alpha_min: float = DEFAULT_ALPHA_MIN,
+    alpha_max: float = DEFAULT_ALPHA_MAX,
+    y_min: float = DEFAULT_Y_MIN,
+    y_max_limit: float = DEFAULT_Y_MAX,
+) -> np.ndarray:
+    """Считает насыщенность цвета как квадратичный скейл по плотности в 2D бинах."""
+    x_vals = df[x_col].to_numpy()
+    y_vals = df[y_col].to_numpy()
+
+    if len(x_vals) == 0:
+        return np.array([])
+
+    x_edges = np.linspace(min(x_vals.min(), 0), x_max, bins_x + 1)
+    y_upper = max(min(y_vals.max(), y_max_limit), 1e-9)
+    y_edges = np.linspace(y_min, y_upper, bins_y + 1)
+
+    x_bins = np.digitize(x_vals, x_edges) - 1
+    y_bins = np.digitize(y_vals, y_edges) - 1
+
+    valid = (
+        (x_bins >= 0) & (x_bins < bins_x) &
+        (y_bins >= 0) & (y_bins < bins_y)
+    )
+    counts = np.zeros((bins_x, bins_y), dtype=int)
+    for xb, yb in zip(x_bins[valid], y_bins[valid]):
+        counts[xb, yb] += 1
+
+    bin_counts = counts[
+        np.clip(x_bins, 0, bins_x - 1),
+        np.clip(y_bins, 0, bins_y - 1),
+    ]
+    max_count = bin_counts.max() if len(bin_counts) else 1
+    if max_count == 0:
+        weight = np.zeros_like(bin_counts, dtype=float)
+    else:
+        weight = (bin_counts / max_count) ** np.sqrt(1.5)
+    weight = np.clip(weight, 0, 1)
+    return alpha_min + (alpha_max - alpha_min) * weight
+
+
+def compute_trend(
+    df: pd.DataFrame,
+    y_col: str,
+    *,
+    x_col: str = X_COL,
+    method: str = DEFAULT_TREND_METHOD,
+    lowess_frac: float = DEFAULT_TREND_FRAC,
+    rolling_window: int = DEFAULT_ROLLING_WINDOW,
+    savgol_window: int = DEFAULT_SAVGOL_WINDOW,
+    savgol_poly: int = DEFAULT_SAVGOL_POLY,
+) -> Tuple[np.ndarray, np.ndarray]:
+    """Возвращает (x_sorted, trend_y) по выбранному методу."""
+    d = df[[x_col, y_col]].dropna().sort_values(x_col)
+    x_vals = d[x_col].to_numpy()
+    y_vals = d[y_col].to_numpy()
+
+    if len(x_vals) == 0:
+        return np.array([]), np.array([])
+
+    m = method.lower()
+    if m == "lowess":
+        trend = lowess(y_vals, x_vals, frac=lowess_frac, return_sorted=True)
+        return trend[:, 0], trend[:, 1]
+    if m == "rolling":
+        w = max(3, rolling_window)
+        if w % 2 == 0:
+            w += 1
+        y_trend = pd.Series(y_vals).rolling(window=w, center=True, min_periods=1).mean().to_numpy()
+        return x_vals, y_trend
+    if m == "savgol":
+        w = max(5, savgol_window)
+        if w % 2 == 0:
+            w += 1
+        poly = min(savgol_poly, w - 1)
+        y_trend = savgol_filter(y_vals, window_length=w, polyorder=poly, mode="interp")
+        return x_vals, y_trend
+
+    # fallback to lowess
+    trend = lowess(y_vals, x_vals, frac=lowess_frac, return_sorted=True)
+    return trend[:, 0], trend[:, 1]
+
+
+def filter_x_range(df: pd.DataFrame, x_col: str, x_max: float) -> pd.DataFrame:
+    subset = df[df[x_col] <= x_max].copy()
+    print(f"{len(df)} points; {len(subset)} within x<={x_max}.")
+    return subset
+
+
 def plot_density_scatter(
     df: pd.DataFrame,
+    y_col: str,
     title: str,
-    out_name: str,
+    out_path: Path,
+    *,
+    x_col: str = X_COL,
+    x_max: float = DEFAULT_X_MAX,
+    scatter_color: str = DEFAULT_SCATTER_COLOR,
+    point_size: int = DEFAULT_POINT_SIZE,
+    alpha: float = DEFAULT_ALPHA,
+    alpha_min: float = DEFAULT_ALPHA_MIN,
+    alpha_max: float = DEFAULT_ALPHA_MAX,
+    bins_x: int = DEFAULT_BINS_X,
+    bins_y: int = DEFAULT_BINS_Y,
+    y_min: float = DEFAULT_Y_MIN,
+    y_max: float = DEFAULT_Y_MAX,
     with_trend: bool = False,
-    alpha: float = 0.08,
+    trend_method: str = DEFAULT_TREND_METHOD,
+    trend_frac: float = DEFAULT_TREND_FRAC,
+    trend_color: str = DEFAULT_TREND_COLOR,
+    trend_linewidth: float = DEFAULT_TREND_LINEWIDTH,
+    rolling_window: int = DEFAULT_ROLLING_WINDOW,
+    savgol_window: int = DEFAULT_SAVGOL_WINDOW,
+    savgol_poly: int = DEFAULT_SAVGOL_POLY,
 ) -> None:
-    fig, ax = plt.subplots(figsize=(10, 6))
-    sns.scatterplot(
-        data=df,
-        x=X_COL,
-        y=Y_COL,
-        color=SCATTER_COLOR,
-        s=20,
-        alpha=alpha,
-        linewidth=0,
-        ax=ax,
+    fig, ax = plt.subplots(figsize=(8, 8))
+    alpha_values = compute_density_alpha(
+        df,
+        x_col=x_col,
+        y_col=y_col,
+        x_max=x_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        y_min=y_min,
+        y_max_limit=y_max,
+    )
+    ax.scatter(
+        df[x_col],
+        df[y_col],
+        color=scatter_color,
+        s=point_size,
+        alpha=alpha_values if len(alpha_values) else alpha,
+        linewidths=0,
     )
 
     if with_trend:
-        trend = lowess(df[Y_COL], df[X_COL], frac=0.3, return_sorted=True)
-        ax.plot(trend[:, 0], trend[:, 1], color="red", linewidth=2.5, label="LOWESS тренд")
-        ax.legend()
+        tx, ty = compute_trend(
+            df,
+            y_col=y_col,
+            x_col=x_col,
+            method=trend_method,
+            lowess_frac=trend_frac,
+            rolling_window=rolling_window,
+            savgol_window=savgol_window,
+            savgol_poly=savgol_poly,
+        )
+        if len(tx):
+            ax.plot(tx, ty, color=trend_color, linewidth=trend_linewidth, label=f"{trend_method} тренд")
+            ax.legend()
 
-    ax.set_xlim(0, X_MAX)
-    ax.set_ylim(bottom=0)
+    ax.set_xlim(0, x_max)
+    ax.set_ylim(y_min, y_max)
+    ax.set_yticks(range(0, int(y_max) + 1, 2))
     ax.set_xlabel("Среднее число показов в день")
-    ax.set_ylabel("Число заказов за период (сумма)")
+    ax.set_ylabel(y_col)
     ax.set_title(title)
     ax.grid(alpha=0.3)
 
-    OUT_DIR.mkdir(parents=True, exist_ok=True)
-    out_path = OUT_DIR / out_name
+    out_path.parent.mkdir(parents=True, exist_ok=True)
     fig.tight_layout()
     fig.savefig(out_path, dpi=150)
     plt.close(fig)
     print(f"Saved {out_path}")
 
 
+def plot_raw_scatter(
+    df: pd.DataFrame,
+    y_col: str,
+    out_dir: Path,
+    *,
+    x_col: str = X_COL,
+    x_max: float = DEFAULT_X_MAX,
+    scatter_color: str = DEFAULT_SCATTER_COLOR,
+    point_size: int = DEFAULT_POINT_SIZE,
+    alpha: float = DEFAULT_ALPHA,
+    alpha_min: float = DEFAULT_ALPHA_MIN,
+    alpha_max: float = DEFAULT_ALPHA_MAX,
+    bins_x: int = DEFAULT_BINS_X,
+    bins_y: int = DEFAULT_BINS_Y,
+    y_min: float = DEFAULT_Y_MIN,
+    y_max: float = DEFAULT_Y_MAX,
+    trend_method: str = DEFAULT_TREND_METHOD,
+    trend_frac: float = DEFAULT_TREND_FRAC,
+    trend_color: str = DEFAULT_TREND_COLOR,
+    trend_linewidth: float = DEFAULT_TREND_LINEWIDTH,
+    rolling_window: int = DEFAULT_ROLLING_WINDOW,
+    savgol_window: int = DEFAULT_SAVGOL_WINDOW,
+    savgol_poly: int = DEFAULT_SAVGOL_POLY,
+) -> None:
+    in_range = filter_x_range(df[[x_col, y_col]].dropna(), x_col, x_max)
+    plot_density_scatter(
+        in_range,
+        y_col=y_col,
+        title=f"Облако: {y_col} vs {x_col} (все клиенты)",
+        out_path=out_dir / "scatter.png",
+        x_col=x_col,
+        x_max=x_max,
+        scatter_color=scatter_color,
+        point_size=point_size,
+        alpha=alpha,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        y_min=y_min,
+        y_max=y_max,
+        trend_method=trend_method,
+        trend_frac=trend_frac,
+        trend_color=trend_color,
+        trend_linewidth=trend_linewidth,
+        rolling_window=rolling_window,
+        savgol_window=savgol_window,
+        savgol_poly=savgol_poly,
+    )
+
+
+def plot_clean_scatter(
+    df: pd.DataFrame,
+    y_col: str,
+    out_dir: Path,
+    *,
+    x_col: str = X_COL,
+    x_max: float = DEFAULT_X_MAX,
+    scatter_color: str = DEFAULT_SCATTER_COLOR,
+    point_size: int = DEFAULT_POINT_SIZE,
+    alpha: float = DEFAULT_ALPHA,
+    iqr_k: float = DEFAULT_IQR_K,
+    q_low: float = DEFAULT_Q_LOW,
+    q_high: float = DEFAULT_Q_HIGH,
+    alpha_min: float = DEFAULT_ALPHA_MIN,
+    alpha_max: float = DEFAULT_ALPHA_MAX,
+    bins_x: int = DEFAULT_BINS_X,
+    bins_y: int = DEFAULT_BINS_Y,
+    y_min: float = DEFAULT_Y_MIN,
+    y_max: float = DEFAULT_Y_MAX,
+    trend_method: str = DEFAULT_TREND_METHOD,
+    trend_frac: float = DEFAULT_TREND_FRAC,
+    trend_color: str = DEFAULT_TREND_COLOR,
+    trend_linewidth: float = DEFAULT_TREND_LINEWIDTH,
+    rolling_window: int = DEFAULT_ROLLING_WINDOW,
+    savgol_window: int = DEFAULT_SAVGOL_WINDOW,
+    savgol_poly: int = DEFAULT_SAVGOL_POLY,
+) -> None:
+    in_range = filter_x_range(df[[x_col, y_col]].dropna(), x_col, x_max)
+    cleaned = remove_outliers(
+        in_range,
+        y_col=y_col,
+        x_col=x_col,
+        iqr_k=iqr_k,
+        q_low=q_low,
+        q_high=q_high,
+    )
+    plot_density_scatter(
+        cleaned,
+        y_col=y_col,
+        title=f"Облако без выбросов (IQR) {y_col} vs {x_col}",
+        out_path=out_dir / "scatter_clean.png",
+        x_col=x_col,
+        x_max=x_max,
+        scatter_color=scatter_color,
+        point_size=point_size,
+        alpha=alpha,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        y_min=y_min,
+        y_max=y_max,
+        trend_method=trend_method,
+        trend_frac=trend_frac,
+        trend_color=trend_color,
+        trend_linewidth=trend_linewidth,
+        rolling_window=rolling_window,
+        savgol_window=savgol_window,
+        savgol_poly=savgol_poly,
+    )
+
+
+def plot_clean_trend_scatter(
+    df: pd.DataFrame,
+    y_col: str,
+    out_dir: Path,
+    *,
+    x_col: str = X_COL,
+    x_max: float = DEFAULT_X_MAX,
+    scatter_color: str = DEFAULT_SCATTER_COLOR,
+    point_size: int = DEFAULT_POINT_SIZE,
+    alpha: float = DEFAULT_TREND_ALPHA,
+    iqr_k: float = DEFAULT_IQR_K,
+    q_low: float = DEFAULT_Q_LOW,
+    q_high: float = DEFAULT_Q_HIGH,
+    trend_frac: float = DEFAULT_TREND_FRAC,
+    trend_color: str = DEFAULT_TREND_COLOR,
+    trend_linewidth: float = DEFAULT_TREND_LINEWIDTH,
+    alpha_min: float = DEFAULT_ALPHA_MIN,
+    alpha_max: float = DEFAULT_ALPHA_MAX,
+    bins_x: int = DEFAULT_BINS_X,
+    bins_y: int = DEFAULT_BINS_Y,
+    y_min: float = DEFAULT_Y_MIN,
+    y_max: float = DEFAULT_Y_MAX,
+    trend_method: str = DEFAULT_TREND_METHOD,
+    rolling_window: int = DEFAULT_ROLLING_WINDOW,
+    savgol_window: int = DEFAULT_SAVGOL_WINDOW,
+    savgol_poly: int = DEFAULT_SAVGOL_POLY,
+    return_components: bool = False,
+) -> None:
+    in_range = filter_x_range(df[[x_col, y_col]].dropna(), x_col, x_max)
+    cleaned = remove_outliers(
+        in_range,
+        y_col=y_col,
+        x_col=x_col,
+        iqr_k=iqr_k,
+        q_low=q_low,
+        q_high=q_high,
+    )
+    plot_density_scatter(
+        cleaned,
+        y_col=y_col,
+        title=f"Облако без выбросов + тренд {y_col} vs {x_col}",
+        out_path=out_dir / "scatter_trend.png",
+        x_col=x_col,
+        x_max=x_max,
+        scatter_color=scatter_color,
+        point_size=point_size,
+        alpha=alpha,
+        with_trend=True,
+        trend_frac=trend_frac,
+        trend_color=trend_color,
+        trend_linewidth=trend_linewidth,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        y_min=y_min,
+        y_max=y_max,
+        trend_method=trend_method,
+        rolling_window=rolling_window,
+        savgol_window=savgol_window,
+        savgol_poly=savgol_poly,
+    )
+    if return_components:
+        return fig, ax, cleaned
+
+
+def generate_scatter_set(
+    df: pd.DataFrame,
+    y_col: str,
+    *,
+    base_out_dir: Path = BASE_OUT_DIR,
+    x_col: str = X_COL,
+    x_max: float = DEFAULT_X_MAX,
+    scatter_color: str = DEFAULT_SCATTER_COLOR,
+    point_size: int = DEFAULT_POINT_SIZE,
+    alpha: float = DEFAULT_ALPHA,
+    trend_alpha: float = DEFAULT_TREND_ALPHA,
+    trend_frac: float = DEFAULT_TREND_FRAC,
+    trend_color: str = DEFAULT_TREND_COLOR,
+    trend_linewidth: float = DEFAULT_TREND_LINEWIDTH,
+    iqr_k: float = DEFAULT_IQR_K,
+    q_low: float = DEFAULT_Q_LOW,
+    q_high: float = DEFAULT_Q_HIGH,
+    alpha_min: float = DEFAULT_ALPHA_MIN,
+    alpha_max: float = DEFAULT_ALPHA_MAX,
+    bins_x: int = DEFAULT_BINS_X,
+    bins_y: int = DEFAULT_BINS_Y,
+    y_min: float = DEFAULT_Y_MIN,
+    y_max: float = DEFAULT_Y_MAX,
+    trend_method: str = DEFAULT_TREND_METHOD,
+    rolling_window: int = DEFAULT_ROLLING_WINDOW,
+    savgol_window: int = DEFAULT_SAVGOL_WINDOW,
+    savgol_poly: int = DEFAULT_SAVGOL_POLY,
+) -> None:
+    """Генерирует три облака (все, без выбросов, без выбросов + тренд) в папку y_col."""
+    out_dir = base_out_dir / str(y_col).replace("/", "_")
+    plot_raw_scatter(
+        df,
+        y_col=y_col,
+        out_dir=out_dir,
+        x_col=x_col,
+        x_max=x_max,
+        scatter_color=scatter_color,
+        point_size=point_size,
+        alpha=alpha,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        y_min=y_min,
+        y_max=y_max,
+        trend_method=trend_method,
+        trend_frac=trend_frac,
+        trend_color=trend_color,
+        trend_linewidth=trend_linewidth,
+        rolling_window=rolling_window,
+        savgol_window=savgol_window,
+        savgol_poly=savgol_poly,
+    )
+    plot_clean_scatter(
+        df,
+        y_col=y_col,
+        out_dir=out_dir,
+        x_col=x_col,
+        x_max=x_max,
+        scatter_color=scatter_color,
+        point_size=point_size,
+        alpha=alpha,
+        iqr_k=iqr_k,
+        q_low=q_low,
+        q_high=q_high,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        y_min=y_min,
+        y_max=y_max,
+        trend_method=trend_method,
+        trend_frac=trend_frac,
+        trend_color=trend_color,
+        trend_linewidth=trend_linewidth,
+        rolling_window=rolling_window,
+        savgol_window=savgol_window,
+        savgol_poly=savgol_poly,
+    )
+    plot_clean_trend_scatter(
+        df,
+        y_col=y_col,
+        out_dir=out_dir,
+        x_col=x_col,
+        x_max=x_max,
+        scatter_color=scatter_color,
+        point_size=point_size,
+        alpha=trend_alpha,
+        iqr_k=iqr_k,
+        q_low=q_low,
+        q_high=q_high,
+        trend_frac=trend_frac,
+        trend_color=trend_color,
+        trend_linewidth=trend_linewidth,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        y_min=y_min,
+        y_max=y_max,
+        trend_method=trend_method,
+        rolling_window=rolling_window,
+        savgol_window=savgol_window,
+        savgol_poly=savgol_poly,
+    )
+
+
 def main() -> None:
     client = load_client_level(DB_PATH)
-
-    plot_density_scatter(
-        client,
-        title="Облако: заказы vs средние показы в день (все клиенты)",
-        out_name="orders_vs_avg_imp_scatter.png",
-    )
-
-    cleaned = remove_outliers(client)
-    plot_density_scatter(
-        cleaned,
-        title="Облако без выбросов (IQR) заказы vs средние показы в день",
-        out_name="orders_vs_avg_imp_scatter_clean.png",
-    )
-
-    plot_density_scatter(
-        cleaned,
-        title="Облако без выбросов + тренд",
-        out_name="orders_vs_avg_imp_scatter_trend.png",
-        with_trend=True,
-        alpha=0.1,
-    )
+    zero_orders = (client["orders_amt_total"] == 0).sum()
+    non_zero = len(client) - zero_orders
+    if len(client):
+        print(f"orders=0: {zero_orders} ({zero_orders / len(client):.2%}); orders>0: {non_zero} ({non_zero / len(client):.2%})")
+    generate_scatter_set(client, y_col="orders_amt_total")
 
 
 if __name__ == "__main__":

main_hypot/quadreg.py

@@ -1,240 +1,352 @@
-import sqlite3
-from pathlib import Path
-import sys
 import numpy as np
 import pandas as pd
-import matplotlib.pyplot as plt
-import seaborn as sns
-
 import statsmodels.api as sm
+from pathlib import Path
+from typing import Tuple, Optional
 
-sns.set_theme(style="whitegrid")
-plt.rcParams["figure.figsize"] = (10, 6)
+from sklearn.metrics import r2_score, roc_auc_score
 
-# -----------------------------
-# Load + feature engineering (как у тебя)
-# -----------------------------
-project_root = Path(__file__).resolve().parent.parent
-sys.path.append(str(project_root / "preanalysis_old_bad"))
-import eda_utils as eda  # noqa: E402
+import best_model_and_plots as bmp
 
-db_path = project_root / "dataset" / "ds.sqlite"
-conn = sqlite3.connect(db_path)
-df = pd.read_sql_query("select * from communications", conn, parse_dates=["business_dt"])
-conn.close()
+# Наследуем константы/визуальные настройки из scatter-скрипта
+X_COL = bmp.X_COL
+DEFAULT_X_MAX = bmp.DEFAULT_X_MAX
+DEFAULT_Y_MIN = bmp.DEFAULT_Y_MIN
+DEFAULT_Y_MAX = bmp.DEFAULT_Y_MAX
+DEFAULT_SCATTER_COLOR = bmp.DEFAULT_SCATTER_COLOR
+DEFAULT_POINT_SIZE = bmp.DEFAULT_POINT_SIZE
+DEFAULT_ALPHA = bmp.DEFAULT_ALPHA
+DEFAULT_ALPHA_MIN = bmp.DEFAULT_ALPHA_MIN
+DEFAULT_ALPHA_MAX = bmp.DEFAULT_ALPHA_MAX
+DEFAULT_BINS_X = bmp.DEFAULT_BINS_X
+DEFAULT_BINS_Y = bmp.DEFAULT_BINS_Y
+DEFAULT_IQR_K = bmp.DEFAULT_IQR_K
+DEFAULT_Q_LOW = bmp.DEFAULT_Q_LOW
+DEFAULT_Q_HIGH = bmp.DEFAULT_Q_HIGH
+DEFAULT_TREND_FRAC = bmp.DEFAULT_TREND_FRAC
+DEFAULT_TREND_COLOR = bmp.DEFAULT_TREND_COLOR
+DEFAULT_TREND_LINEWIDTH = bmp.DEFAULT_TREND_LINEWIDTH
+BASE_OUT_DIR = bmp.BASE_OUT_DIR
 
-for cols, name in [
-    (eda.ACTIVE_IMP_COLS, "active_imp_total"),
-    (eda.PASSIVE_IMP_COLS, "passive_imp_total"),
-    (eda.ACTIVE_CLICK_COLS, "active_click_total"),
-    (eda.PASSIVE_CLICK_COLS, "passive_click_total"),
-    (eda.ORDER_COLS, "orders_amt_total"),
-]:
-    df[name] = df[cols].sum(axis=1)
 
-df["imp_total"] = df["active_imp_total"] + df["passive_imp_total"]
-df["click_total"] = df["active_click_total"] + df["passive_click_total"]
-
-contact_days = df.groupby("id")["business_dt"].nunique().rename("contact_days")
-
-client = (
-    df.groupby("id")
-    .agg(
-        imp_total=("imp_total", "sum"),
-        click_total=("click_total", "sum"),
-        orders_amt_total=("orders_amt_total", "sum"),
-        age=("age", "median"),
-        gender_cd=("gender_cd", lambda s: s.mode().iat[0]),
-        device_platform_cd=("device_platform_cd", lambda s: s.mode().iat[0]),
+def prepare_clean_data(
+    y_col: str,
+    *,
+    x_col: str = X_COL,
+    x_max: float = DEFAULT_X_MAX,
+    iqr_k: float = DEFAULT_IQR_K,
+    q_low: float = DEFAULT_Q_LOW,
+    q_high: float = DEFAULT_Q_HIGH,
+) -> Tuple[np.ndarray, np.ndarray, pd.DataFrame]:
+    """Готовит очищенные данные: фильтр по x и IQR, возвращает x, y и DataFrame."""
+    df = bmp.load_client_level(bmp.DB_PATH)
+    base = df[[x_col, y_col]].dropna()
+    in_range = bmp.filter_x_range(base, x_col, x_max)
+    cleaned = bmp.remove_outliers(
+        in_range,
+        y_col=y_col,
+        x_col=x_col,
+        iqr_k=iqr_k,
+        q_low=q_low,
+        q_high=q_high,
     )
-    .merge(contact_days, on="id", how="left")
-    .reset_index()
-)
+    x = cleaned[x_col].to_numpy()
+    y = cleaned[y_col].to_numpy()
+    return x, y, cleaned
 
-client["order_rate"] = eda.safe_divide(client["orders_amt_total"], client["imp_total"])
-client["order_rate_pct"] = 100 * client["order_rate"]
-client["avg_imp_per_day"] = eda.safe_divide(client["imp_total"], client["contact_days"])
 
-# -----------------------------
-# Aggregate curve points (как у тебя)
-# -----------------------------
-stats_imp = (
-    client.groupby("avg_imp_per_day", as_index=False)
-    .agg(
-        orders_mean=("orders_amt_total", "mean"),
-        n_clients=("id", "count"),
+def fit_quadratic(
+    x: np.ndarray,
+    y_target: np.ndarray,
+    weights: Optional[np.ndarray] = None,
+) -> Tuple[sm.regression.linear_model.RegressionResultsWrapper, np.ndarray]:
+    """Фитим квадратику по x -> y_target (WLS), предсказываем на тех же x."""
+    X_design = np.column_stack([x, x**2])
+    X_design = sm.add_constant(X_design)
+    if weights is not None:
+        model = sm.WLS(y_target, X_design, weights=weights).fit(cov_type="HC3")
+    else:
+        model = sm.OLS(y_target, X_design).fit(cov_type="HC3")
+
+    y_hat = model.predict(X_design)
+    return model, y_hat
+
+
+def compute_metrics(y_true: np.ndarray, y_pred: np.ndarray) -> Tuple[Optional[float], Optional[float]]:
+    """Возвращает (R2, AUC по метке y>0)."""
+    r2 = r2_score(y_true, y_pred)
+    auc = None
+    try:
+        auc = roc_auc_score((y_true > 0).astype(int), y_pred)
+    except ValueError:
+        auc = None
+    return r2, auc
+
+
+def map_trend_to_points(x_points: np.ndarray, trend_x: np.ndarray, trend_y: np.ndarray) -> np.ndarray:
+    """Интерполирует значения тренда в точках x_points."""
+    if len(trend_x) == 0:
+        return np.zeros_like(x_points)
+    # гарантируем отсортированность
+    order = np.argsort(trend_x)
+    tx = trend_x[order]
+    ty = trend_y[order]
+    return np.interp(x_points, tx, ty, left=ty[0], right=ty[-1])
+
+
+def density_weights(
+    df: pd.DataFrame,
+    y_col: str,
+    *,
+    x_col: str = X_COL,
+    x_max: float = DEFAULT_X_MAX,
+    alpha_min: float = DEFAULT_ALPHA_MIN,
+    alpha_max: float = DEFAULT_ALPHA_MAX,
+    bins_x: int = DEFAULT_BINS_X,
+    bins_y: int = DEFAULT_BINS_Y,
+    y_min: float = DEFAULT_Y_MIN,
+    y_max: float = DEFAULT_Y_MAX,
+) -> np.ndarray:
+    """Строит веса из плотности (та же схема, что и альфы на графике)."""
+    alphas = bmp.compute_density_alpha(
+        df,
+        x_col=x_col,
+        y_col=y_col,
+        x_max=x_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        y_min=y_min,
+        y_max_limit=y_max,
     )
-    .sort_values("avg_imp_per_day")
-).reset_index(drop=True)
+    if len(alphas) == 0:
+        return np.ones(len(df))
+    denom = max(alpha_max - alpha_min, 1e-9)
+    weights = (alphas - alpha_min) / denom
+    weights = np.clip(weights, 0, None)
+    return weights
 
-# -----------------------------
-# Filtering / outlier logic (как у тебя)
-# -----------------------------
-K_MULT = 2
-ABS_DY_MIN = 1
-X_MAX = 16
 
-stats_f = stats_imp[stats_imp["avg_imp_per_day"] <= X_MAX].copy().reset_index(drop=True)
+def plot_quadratic_overlay(
+    df: pd.DataFrame,
+    model: sm.regression.linear_model.RegressionResultsWrapper,
+    y_col: str,
+    out_path: Path,
+    *,
+    x_col: str = X_COL,
+    x_max: float = DEFAULT_X_MAX,
+    y_min: float = DEFAULT_Y_MIN,
+    y_max: float = DEFAULT_Y_MAX,
+    scatter_color: str = DEFAULT_SCATTER_COLOR,
+    point_size: int = DEFAULT_POINT_SIZE,
+    alpha: float = DEFAULT_ALPHA,
+    alpha_min: float = DEFAULT_ALPHA_MIN,
+    alpha_max: float = DEFAULT_ALPHA_MAX,
+    bins_x: int = DEFAULT_BINS_X,
+    bins_y: int = DEFAULT_BINS_Y,
+    trend_frac: float = DEFAULT_TREND_FRAC,
+    trend_color: str = DEFAULT_TREND_COLOR,
+    trend_linewidth: float = DEFAULT_TREND_LINEWIDTH,
+    trend_method: str = bmp.DEFAULT_TREND_METHOD,
+    rolling_window: int = bmp.DEFAULT_ROLLING_WINDOW,
+    savgol_window: int = bmp.DEFAULT_SAVGOL_WINDOW,
+    savgol_poly: int = bmp.DEFAULT_SAVGOL_POLY,
+) -> None:
+    """Рисует облако + LOWESS-тренд + линию квадр. регрессии."""
+    fig, ax = bmp.plt.subplots(figsize=(8, 8))
+    alpha_values = bmp.compute_density_alpha(
+        df,
+        x_col=x_col,
+        y_col=y_col,
+        x_max=x_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        y_min=y_min,
+        y_max_limit=y_max,
+    )
+    ax.scatter(
+        df[x_col],
+        df[y_col],
+        color=scatter_color,
+        s=point_size,
+        alpha=alpha_values if len(alpha_values) else alpha,
+        linewidths=0,
+        label="Точки (очищено)",
+    )
 
-before = len(stats_f)
-y = stats_f["orders_mean"]
-abs_dy = y.diff().abs()
+    # Тренд по выбранному методу
+    tx, ty = bmp.compute_trend(
+        df,
+        y_col=y_col,
+        x_col=x_col,
+        method=trend_method,
+        lowess_frac=trend_frac,
+        rolling_window=rolling_window,
+        savgol_window=savgol_window,
+        savgol_poly=savgol_poly,
+    )
+    if len(tx):
+        ax.plot(tx, ty, color=trend_color, linewidth=trend_linewidth, label=f"{trend_method} тренд")
 
-prev3_mean = abs_dy.shift(1).rolling(window=3, min_periods=3).mean()
-ratio = abs_dy / (prev3_mean.replace(0, np.nan))
+    # Квадратичная регрессия
+    x_grid = np.linspace(0, x_max, 400)
+    X_grid = sm.add_constant(np.column_stack([x_grid, x_grid**2]))
+    y_grid = model.predict(X_grid)
+    ax.plot(x_grid, y_grid, color="blue", linewidth=2.3, linestyle="--", label="Квадр. регрессия")
 
-is_outlier = ((abs_dy >= ABS_DY_MIN) & (ratio >= K_MULT)) | (y > 5)
-is_outlier = is_outlier.fillna(False)
+    ax.set_xlim(0, x_max)
+    ax.set_ylim(y_min, y_max)
+    ax.set_yticks(range(0, int(y_max) + 1, 2))
+    ax.set_xlabel("Среднее число показов в день")
+    ax.set_ylabel(y_col)
+    ax.set_title(f"Квадратичная регрессия: {y_col} vs {x_col}")
+    ax.grid(alpha=0.3)
+    ax.legend()
 
-stats_f = stats_f.loc[~is_outlier].copy().reset_index(drop=True)
-after = len(stats_f)
-print(f"Фильтрация: было {before}, стало {after}, убрали {before-after} точек")
+    out_path.parent.mkdir(parents=True, exist_ok=True)
+    fig.tight_layout()
+    fig.savefig(out_path, dpi=150)
+    bmp.plt.close(fig)
+    print(f"Saved {out_path}")
 
-# -----------------------------
-# Smoothing (оставим для визуалки, но регрессию делаем по orders_mean)
-# -----------------------------
-w = max(7, int(len(stats_f) * 0.05))
-if w % 2 == 0:
-    w += 1
 
-stats_f["orders_smooth"] = (
-    stats_f["orders_mean"]
-    .rolling(window=w, center=True, min_periods=1)
-    .mean()
-)
+def report_model(
+    model: sm.regression.linear_model.RegressionResultsWrapper,
+    r2: Optional[float],
+    auc: Optional[float],
+    *,
+    r2_trend: Optional[float] = None,
+) -> None:
+    params = model.params
+    pvals = model.pvalues
+    fmt_p = lambda p: f"<1e-300" if p < 1e-300 else f"{p:.4g}"
+    print("\n=== Квадратичная регрессия (y ~ 1 + x + x^2) ===")
+    print(f"const: {params[0]:.6f} (p={fmt_p(pvals[0])})")
+    print(f"beta1 x: {params[1]:.6f} (p={fmt_p(pvals[1])})")
+    print(f"beta2 x^2: {params[2]:.6f} (p={fmt_p(pvals[2])})")
+    print(f"R2: {r2:.4f}" if r2 is not None else "R2: n/a")
+    if r2_trend is not None:
+        print(f"R2 vs trend target: {r2_trend:.4f}")
+    print(f"AUC (target y>0): {auc:.4f}" if auc is not None else "AUC: n/a (один класс)")
 
-# -----------------------------
-# Cost line (как у тебя, нормировка "в единицах заказов")
-# -----------------------------
-c = stats_f["orders_smooth"].max() / stats_f["avg_imp_per_day"].max()
-stats_f["cost_line"] = c * stats_f["avg_imp_per_day"]
 
-# -----------------------------
-# Quadratic regression: orders_mean ~ 1 + x + x^2
-# WLS with weights = n_clients
-# -----------------------------
-x = stats_f["avg_imp_per_day"].to_numpy()
-y = stats_f["orders_mean"].to_numpy()
-wts = stats_f["n_clients"].to_numpy().astype(float)
+def generate_quadratic_analysis(
+    y_col: str,
+    *,
+    x_col: str = X_COL,
+    base_out_dir: Path = BASE_OUT_DIR,
+    config_name: str = "default",
+    x_max: float = DEFAULT_X_MAX,
+    y_min: float = DEFAULT_Y_MIN,
+    y_max: float = DEFAULT_Y_MAX,
+    scatter_color: str = DEFAULT_SCATTER_COLOR,
+    point_size: int = DEFAULT_POINT_SIZE,
+    alpha: float = DEFAULT_ALPHA,
+    alpha_min: float = DEFAULT_ALPHA_MIN,
+    alpha_max: float = DEFAULT_ALPHA_MAX,
+    bins_x: int = DEFAULT_BINS_X,
+    bins_y: int = DEFAULT_BINS_Y,
+    trend_frac: float = DEFAULT_TREND_FRAC,
+    trend_color: str = DEFAULT_TREND_COLOR,
+    trend_linewidth: float = DEFAULT_TREND_LINEWIDTH,
+    iqr_k: float = DEFAULT_IQR_K,
+    q_low: float = DEFAULT_Q_LOW,
+    q_high: float = DEFAULT_Q_HIGH,
+    trend_method: str = bmp.DEFAULT_TREND_METHOD,
+    rolling_window: int = bmp.DEFAULT_ROLLING_WINDOW,
+    savgol_window: int = bmp.DEFAULT_SAVGOL_WINDOW,
+    savgol_poly: int = bmp.DEFAULT_SAVGOL_POLY,
+) -> dict:
+    x, y, cleaned_df = prepare_clean_data(
+        y_col,
+        x_col=x_col,
+        x_max=x_max,
+        iqr_k=iqr_k,
+        q_low=q_low,
+        q_high=q_high,
+    )
+    w = density_weights(
+        cleaned_df,
+        y_col=y_col,
+        x_col=x_col,
+        x_max=x_max,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        y_min=y_min,
+        y_max=y_max,
+    )
+    # тренд по выбранному методу
+    tx, ty = bmp.compute_trend(
+        cleaned_df,
+        y_col=y_col,
+        x_col=x_col,
+        method=trend_method,
+        lowess_frac=trend_frac,
+        rolling_window=rolling_window,
+        savgol_window=savgol_window,
+        savgol_poly=savgol_poly,
+    )
 
-X = np.column_stack([x, x**2])
-X = sm.add_constant(X)  # [1, x, x^2]
+    trend_target = map_trend_to_points(x, tx, ty)
+    model, y_hat = fit_quadratic(x, trend_target, weights=w)
+    r2_actual, auc = compute_metrics(y, y_hat)
+    r2_trend = r2_score(trend_target, y_hat) if len(trend_target) else None
+    report_model(model, r2_actual, auc, r2_trend=r2_trend)
 
-model = sm.WLS(y, X, weights=wts)
-res = model.fit(cov_type="HC3")  # робастные ошибки
+    out_dir = base_out_dir / config_name / str(y_col).replace("/", "_")
+    plot_quadratic_overlay(
+        cleaned_df,
+        model,
+        y_col=y_col,
+        out_path=out_dir / "quad_regression.png",
+        x_col=x_col,
+        x_max=x_max,
+        y_min=y_min,
+        y_max=y_max,
+        scatter_color=scatter_color,
+        point_size=point_size,
+        alpha=alpha,
+        alpha_min=alpha_min,
+        alpha_max=alpha_max,
+        bins_x=bins_x,
+        bins_y=bins_y,
+        trend_frac=trend_frac,
+        trend_color=trend_color,
+        trend_linewidth=trend_linewidth,
+        trend_method=trend_method,
+        rolling_window=rolling_window,
+        savgol_window=savgol_window,
+        savgol_poly=savgol_poly,
+    )
 
-b0, b1, b2 = res.params
-p_b1_two = res.pvalues[1]
-p_b2_two = res.pvalues[2]
+    return {
+        "config": config_name,
+        "y_col": y_col,
+        "r2": r2_actual,
+        "r2_trend": r2_trend,
+        "auc": auc,
+        "params": {
+            "trend_method": trend_method,
+            "trend_frac": trend_frac,
+            "rolling_window": rolling_window,
+            "savgol_window": savgol_window,
+            "savgol_poly": savgol_poly,
+            "x_max": x_max,
+            "weights_alpha_range": (alpha_min, alpha_max),
+        },
+        "coeffs": model.params.tolist(),
+        "pvalues": model.pvalues.tolist(),
+    }
 
-# one-sided p-values for directional hypotheses
-p_b1_pos = (p_b1_two / 2) if (b1 > 0) else (1 - p_b1_two / 2)
-p_b2_neg = (p_b2_two / 2) if (b2 < 0) else (1 - p_b2_two / 2)
 
-# turning point (if concave)
-x_star = None
-y_star = None
-if b2 < 0:
-    x_star = -b1 / (2 * b2)
-    y_star = b0 + b1 * x_star + b2 * x_star**2
+def main() -> None:
+    generate_quadratic_analysis("orders_amt_total")
 
-# Intersection with cost line: b0 + b1 x + b2 x^2 = c x  ->  b2 x^2 + (b1 - c) x + b0 = 0
-x_cross = None
-roots = np.roots([b2, (b1 - c), b0])  # may be complex
-roots = [r.real for r in roots if abs(r.imag) < 1e-8]
-roots_in_range = [r for r in roots if (stats_f["avg_imp_per_day"].min() <= r <= stats_f["avg_imp_per_day"].max())]
-if roots_in_range:
-    # берём корень ближе к "правой" части (обычно пересечение интереснее там, где начинается невыгодно)
-    x_cross = max(roots_in_range)
 
-# -----------------------------
-# Print results + interpretation (по-человечески)
-# -----------------------------
-print("\n=== Квадратичная регрессия (WLS, веса = n_clients, SE = HC3) ===")
-print(res.summary())
-
-print("\n=== Проверка гипотезы убывающей отдачи / спада ===")
-print(f"β1 (линейный эффект): {b1:.6f}, двусторонний p={p_b1_two:.4g}, односторонний p(β1>0)={p_b1_pos:.4g}")
-print(f"β2 (кривизна):       {b2:.6f}, двусторонний p={p_b2_two:.4g}, односторонний p(β2<0)={p_b2_neg:.4g}")
-
-alpha = 0.05
-support = (b1 > 0) and (b2 < 0) and (p_b1_pos < alpha) and (p_b2_neg < alpha)
-
-if support:
-    print("\nВывод: данные поддерживают гипотезу нелинейности.")
-    print("Есть статистически значимый рост на малых x (β1>0) и насыщение/спад (β2<0).")
-else:
-    print("\nВывод: строгого статистического подтверждения по знакам/значимости может не хватить.")
-    print("Но знак коэффициентов и форма кривой всё равно могут быть согласованы с гипотезой.")
-    print("На защите говори аккуратно: 'наблюдается тенденция/согласуется с гипотезой'.")
-
-if x_star is not None:
-    print(f"\nОценка 'порога насыщения' (вершина параболы): x* = {x_star:.3f} показов/день")
-    print(f"Прогноз среднего числа заказов в x*: y(x*) ≈ {y_star:.3f}")
-    if not (stats_f["avg_imp_per_day"].min() <= x_star <= stats_f["avg_imp_per_day"].max()):
-        print("Внимание: x* вне диапазона наблюдений, интерпретация как 'оптимума' сомнительная.")
-else:
-    print("\nВершина не считается как максимум: β2 >= 0 (нет выпуклости вниз).")
-
-if x_cross is not None:
-    y_cross = b0 + b1 * x_cross + b2 * x_cross**2
-    print(f"\nТочка пересечения с линейными расходами (в нормировке c={c:.4f}): x≈{x_cross:.3f}, y≈{y_cross:.3f}")
-else:
-    print("\nПересечение с линией расходов в выбранной нормировке не найдено (или вне диапазона).")
-
-# -----------------------------
-# Plot: points + smooth + quadratic fit + cost + markers
-# -----------------------------
-x_grid = np.linspace(stats_f["avg_imp_per_day"].min(), stats_f["avg_imp_per_day"].max(), 300)
-y_hat = b0 + b1 * x_grid + b2 * x_grid**2
-cost_hat = c * x_grid
-
-plt.figure(figsize=(10, 8))
-
-plt.plot(
-    stats_f["avg_imp_per_day"], stats_f["orders_mean"],
-    marker="o", linestyle="-", linewidth=1, alpha=0.3,
-    label="Среднее число заказов (по точкам)"
-)
-
-plt.plot(
-    stats_f["avg_imp_per_day"], stats_f["orders_smooth"],
-    color="red", linewidth=2.2,
-    label="Сглаженный тренд (rolling mean)"
-)
-
-plt.plot(
-    x_grid, y_hat,
-    color="blue", linewidth=2.5,
-    label="Квадратичная регрессия (WLS)"
-)
-
-plt.plot(
-    x_grid, cost_hat,
-    color="black", linestyle="--", linewidth=2,
-    label="Линейные расходы на показы"
-)
-
-if x_star is not None and (stats_f["avg_imp_per_day"].min() <= x_star <= stats_f["avg_imp_per_day"].max()):
-    plt.axvline(x_star, color="blue", linestyle=":", linewidth=2)
-    plt.scatter([x_star], [y_star], color="blue", zorder=5)
-    plt.text(x_star, y_star, f"  x*={x_star:.2f}", va="bottom")
-
-if x_cross is not None:
-    y_cross = b0 + b1 * x_cross + b2 * x_cross**2
-    plt.axvline(x_cross, color="black", linestyle=":", linewidth=2, alpha=0.8)
-    plt.scatter([x_cross], [y_cross], color="black", zorder=5)
-    plt.text(x_cross, y_cross, f"  пересечение≈{x_cross:.2f}", va="top")
-
-plt.xlabel("Среднее число показов в день")
-plt.ylabel("Среднее число заказов")
-plt.title("Нелинейный эффект интенсивности коммуникаций: квадратичная регрессия")
-plt.legend()
-plt.grid(alpha=0.3)
-plt.tight_layout()
-
-out_dir = project_root / "main_hypot"
-out_dir.mkdir(parents=True, exist_ok=True)
-out_path = out_dir / "quad_regression_with_costs.png"
-plt.savefig(out_path, dpi=150)
-print(f"\nSaved: {out_path}")
+if __name__ == "__main__":
+    main()