fix issue in tree saving

DecisionTree.ipynb

@@ -2,7 +2,7 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 26,
+   "execution_count": 31,
    "id": "d5618056",
    "metadata": {},
    "outputs": [],
@@ -21,7 +21,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 27,
+   "execution_count": 32,
    "id": "d336971a",
    "metadata": {},
    "outputs": [],
@@ -92,6 +92,8 @@
     "                i = node\n",
     "                if i[1] == \"l\":\n",
     "                    clause.append({\"feature\": i[3], \"operation\": \"<=\", \"value\": i[2]})\n",
+    "                else:\n",
+    "                    clause.append({\"feature\": i[3], \"operation\": \">\", \"value\": i[2]})\n",
     "                    \n",
     "        a = list(value[node][0])\n",
     "        ind = a.index(max(a))\n",
@@ -103,10 +105,19 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 33,
    "id": "b96f3403",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "train accuracy: 0.879490682862549\n",
+      "test accuracy: 0.879490682862549\n"
+     ]
+    }
+   ],
    "source": [
     "# Training set X and Y\n",
     "Set1 = pd.read_csv(inputfile)\n",
@@ -138,7 +149,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 34,
    "id": "7f36344d",
    "metadata": {},
    "outputs": [],
@@ -154,7 +165,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 35,
    "id": "cf8832b9",
    "metadata": {},
    "outputs": [