Fixed Google Colab link in week 3 day 4, and latest week 8 updates

week8_wip/agents/random_forest_agent.py

@@ -0,0 +1,18 @@
+# imports
+
+import os
+import re
+from typing import List
+from sentence_transformers import SentenceTransformer
+import joblib
+
+
+class RandomForestAgent:
+
+    def __init__(self):
+        self.vectorizer = SentenceTransformer('sentence-transformers/all-MiniLM-L6-v2')
+        self.model = joblib.load('random_forest_model.pkl')
+
+    def price(self, description: str) -> float:
+        vector = self.vectorizer.encode([description])
+        return max(0, self.model.predict(vector)[0])