Update app.py

app.py

@@ -3,6 +3,129 @@ from huggingface_hub import InferenceClient
 import gradio as gr
 import random
 
+#Semantic Search
+#STEP 1
+!pip install -q sentence-transformers
+from sentence_transformers import SentenceTransformer
+import torch
+
+#STEP 2
+# Open the water_cycle.txt file in read mode with UTF-8 encoding
+with open("water_cycle.txt", "r", encoding="utf-8") as file:
+  # Read the entire contents of the file and store it in a variable
+  water_cycle_text = file.read()
+
+# Print the text below
+print(water_cycle_text)
+
+#STEP 3
+def preprocess_text(text):
+  # Strip extra whitespace from the beginning and the end of the text
+  cleaned_text = text.strip()
+
+  # Split the cleaned_text by every newline character (\n)
+  chunks = cleaned_text.split("\n")
+
+  # Create an empty list to store cleaned chunks
+  cleaned_chunks = []
+
+  # Write your for-in loop below to clean each chunk and add it to the cleaned_chunks list
+  for chunk in chunks:
+    stripped_chunk = chunk.strip()
+    if len(stripped_chunk) >= 0:
+      cleaned_chunks.append(stripped_chunk)
+
+  # Print cleaned_chunks
+  print(cleaned_chunks)
+
+  # Print the length of cleaned_chunks
+  print(len(cleaned_chunks))
+
+  # Return the cleaned_chunks
+  return cleaned_chunks
+
+# Call the preprocess_text function and store the result in a cleaned_chunks variable
+cleaned_chunks = preprocess_text(water_cycle_text)]
+
+#STEP 4
+# Load the pre-trained embedding model that converts text to vectors
+model = SentenceTransformer('all-MiniLM-L6-v2')
+
+def create_embeddings(text_chunks):
+  # Convert each text chunk into a vector embedding and store as a tensor
+  chunk_embeddings = model.encode(text_chunks, convert_to_tensor=True) # Replace ... with the text_chunks list
+
+  # Print the chunk embeddings
+  print(chunk_embeddings)
+
+  # Print the shape of chunk_embeddings
+  print(chunk_embeddings.shape) # no parentheses on .shape because it's a property, not a method! Look up the difference between class methods and classes properties.
+
+  # Return the chunk_embeddings
+  return chunk_embeddings
+
+# Call the create_embeddings function and store the result in a new chunk_embeddings variable
+chunk_embeddings = create_embeddings(cleaned_chunks)
+
+#STEP 5
+# Define a function to find the most relevant text chunks for a given query, chunk_embeddings, and text_chunks
+def get_top_chunks(query, chunk_embeddings, text_chunks):
+  # Convert the query text into a vector embedding
+  query_embedding = model.encode(query, convert_to_tensor=True)
+
+  # Normalize the query embedding to unit length for accurate similarity comparison
+  query_embedding_normalized = query_embedding / query_embedding.norm()
+
+  # Normalize all chunk embeddings to unit length for consistent comparison
+  chunk_embeddings_normalized = chunk_embeddings / chunk_embeddings.norm(dim=1, keepdim=True)
+
+  # Calculate cosine similarity between query and all chunks using matrix multiplication
+  similarities = torch.matmul(chunk_embeddings_normalized, query_embedding_normalized)
+
+  # Print the similarities
+  print(similarities)
+
+  # Find the indices of the 3 chunks with highest similarity scores
+  top_indices = torch.topk(similarities, k=3).indices
+
+  # Print the top indices
+  print(top_indices)
+
+  # Create an empty list to store the most relevant chunks
+  top_chunks = []
+
+  # Loop through the top indices and retrieve the corresponding text chunks
+  for index in top_indices:
+    chunk = text_chunks[index]
+    top_chunks.append(chunk)
+
+  # Return the list of most relevant chunks
+  return top_chunks
+
+#STEP 6 or Practice
+# ===== LOAD & PROCESS YOUR NEW CONTENT =====
+with open("em_spectrum.txt", "r", encoding="utf-8") as file:
+  # Read the entire contents of the file and store it in a variable
+  em_spectrum_text = file.read()
+
+# Print the text below
+print(em_spectrum_text)
+
+# ===== APPLY THE COMPLETE WORKFLOW =====
+#need cleaned_chunks variable
+#need chunk_embeddings variable
+em_cleaned_chunks = preprocess_text(em_spectrum_text)
+em_chunk_embeddings = create_embeddings(em_cleaned_chunks)
+
+test_question = "What type of EM radiation has the most energy?"
+
+print("test question:", test_question)
+em_top_results = get_top_chunks(test_question, em_chunk_embeddings, em_cleaned_chunks)
+print(em_top_results)
+
+
+# ===== EXPERIMENT & VERIFY =====
+
 client=InferenceClient("HuggingFaceH4/zephyr-7b-beta")
 
 def respond(message, history):