skip grid search cv in build leaf if param_dict is empty; version 0.2.4

Author: ZebinYang

examples/demo.ipynb

@@ -2,11 +2,11 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "metadata": {
     "ExecuteTime": {
-     "end_time": "2021-12-15T07:22:42.166872Z",
-     "start_time": "2021-12-15T07:22:40.227581Z"
+     "end_time": "2021-12-27T11:25:01.467037Z",
+     "start_time": "2021-12-27T11:24:59.706592Z"
     }
    },
    "outputs": [],
@@ -29,11 +29,11 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "metadata": {
     "ExecuteTime": {
-     "end_time": "2021-12-15T07:22:42.220723Z",
-     "start_time": "2021-12-15T07:22:42.170592Z"
+     "end_time": "2021-12-27T11:25:01.500112Z",
+     "start_time": "2021-12-27T11:25:01.469302Z"
     }
    },
    "outputs": [],
@@ -48,7 +48,8 @@
    "execution_count": null,
    "metadata": {
     "ExecuteTime": {
-     "start_time": "2021-12-15T07:22:40.159Z"
+     "end_time": "2021-12-27T11:25:50.669194Z",
+     "start_time": "2021-12-27T11:25:01.501343Z"
     },
     "scrolled": true
    },
@@ -70,7 +71,8 @@
    "execution_count": null,
    "metadata": {
     "ExecuteTime": {
-     "start_time": "2021-12-15T07:22:40.160Z"
+     "end_time": "2021-12-27T11:25:50.670794Z",
+     "start_time": "2021-12-27T11:25:50.670779Z"
     }
    },
    "outputs": [],
@@ -95,7 +97,8 @@
    "execution_count": null,
    "metadata": {
     "ExecuteTime": {
-     "start_time": "2021-12-15T07:22:40.164Z"
+     "end_time": "2021-12-27T11:25:50.671677Z",
+     "start_time": "2021-12-27T11:25:50.671662Z"
     }
    },
    "outputs": [],
@@ -110,7 +113,8 @@
    "execution_count": null,
    "metadata": {
     "ExecuteTime": {
-     "start_time": "2021-12-15T07:22:40.165Z"
+     "end_time": "2021-12-27T11:25:50.672528Z",
+     "start_time": "2021-12-27T11:25:50.672513Z"
     }
    },
    "outputs": [],
@@ -131,7 +135,8 @@
    "execution_count": null,
    "metadata": {
     "ExecuteTime": {
-     "start_time": "2021-12-15T07:22:40.166Z"
+     "end_time": "2021-12-27T11:25:50.673375Z",
+     "start_time": "2021-12-27T11:25:50.673360Z"
     }
    },
    "outputs": [],

simtree/simtree.py

@@ -440,6 +440,8 @@ def build_leaf(self, sample_indice):
                           knot_num=self.knot_num, random_state=self.random_state)
             best_estimator.fit(self.x[sample_indice], self.y[sample_indice].ravel())
         else:
+            base = SimRegressor(reg_gamma=self.reg_gamma, degree=self.degree,
+                          knot_num=self.knot_num, random_state=self.random_state)
             grid = GridSearchCV(base, param_grid={"reg_lambda": self.reg_lambda},
                           scoring={"mse": make_scorer(mean_squared_error, greater_is_better=False)},
                           cv=5, refit="mse", n_jobs=1, error_score=np.nan)