First Commit

README.md

@@ -1,8 +1,8 @@
 ---
-title: GAI Workshop-201
-emoji: 🐢
-colorFrom: blue
-colorTo: blue
+title: GAI Workshop
+emoji: 💻
+colorFrom: gray
+colorTo: indigo
 sdk: gradio
 sdk_version: 4.16.0
 app_file: app.py

app.py

@@ -0,0 +1,102 @@
+import gradio as gr
+import pandas as pd
+import numpy as np
+from langchain.text_splitter import RecursiveCharacterTextSplitter
+from sentence_transformers import SentenceTransformer
+from sklearn.metrics.pairwise import cosine_similarity
+
+# Constants for default values
+DEFAULT_CHUNK_SIZE = 100
+DEFAULT_CHUNK_OVERLAP = 0
+DEFAULT_NUM_CHUNKS = 10
+
+# Initialize the sentence transformer model for embeddings
+model = SentenceTransformer('all-MiniLM-L6-v2')
+
+def tokenize_text(method, text, chunk_size, chunk_overlap, num_chunks):
+    """
+    Tokenizes the input text based on the selected method and provided parameters.
+    """
+    num_chunks = int(num_chunks)
+    output = []
+
+    # Ensure text is provided
+    if not text.strip():
+        return pd.DataFrame(columns=['Chunk #', 'Text Chunk', 'Character Count', 'Token Count'])
+
+    if method == "RecursiveCharacterTextSplitter":
+        text_splitter = RecursiveCharacterTextSplitter(chunk_size=chunk_size, chunk_overlap=chunk_overlap, length_function=len, is_separator_regex=False)
+        tokenized_texts = text_splitter.split_text(text)[:num_chunks]
+        for i, chunk in enumerate(tokenized_texts):
+            output.append({
+                'Chunk #': i,
+                'Text Chunk': chunk,
+                'Character Count': len(chunk),
+                'Token Count': len(chunk.split())
+            })
+
+    df = pd.DataFrame(output)
+    return df
+
+def calculate_embeddings(df):
+    """
+    Calculates embeddings for each text chunk in the dataframe.
+    """
+    if df.empty:
+        return df
+
+    chunks = df['Text Chunk'].tolist()
+    embeddings = model.encode(chunks)
+    df['Embeddings'] = embeddings.tolist()
+    return df
+
+def search_similar_chunks(query, df_with_embeddings):
+    """
+    Search for chunks similar to the query embedding.
+    """
+    # Compute the query embedding
+    query_embedding = model.encode([query])[0]
+    
+    # Calculate similarity scores
+    chunk_embeddings = np.vstack(df_with_embeddings['Embeddings'])
+    similarity_scores = cosine_similarity([query_embedding], chunk_embeddings)[0]
+    
+    # Insert similarity scores into the dataframe after 'Chunk #'
+    df_with_embeddings.insert(1, 'Similarity', similarity_scores)
+    
+    # Return the dataframe sorted by similarity scores in descending order
+    return df_with_embeddings.sort_values(by='Similarity', ascending=False)
+
+def process_and_embed(method, text, chunk_size, chunk_overlap, num_chunks):
+    """
+    Tokenizes the text and calculates embeddings.
+    """
+    df = tokenize_text(method, text, chunk_size, chunk_overlap, num_chunks)
+    df_with_embeddings = calculate_embeddings(df)
+    return df_with_embeddings
+
+def update_output(method, text, chunk_size, chunk_overlap, num_chunks, query):
+    df_with_embeddings = process_and_embed(method, text, chunk_size, chunk_overlap, num_chunks)
+    if query:
+        df_with_embeddings = search_similar_chunks(query, df_with_embeddings)
+        # Update the headers to reflect the new column order after similarity search
+        return df_with_embeddings[['Chunk #', 'Similarity', 'Text Chunk', 'Character Count', 'Token Count', 'Embeddings']]
+    return df_with_embeddings[['Chunk #', 'Text Chunk', 'Character Count', 'Token Count', 'Embeddings']]
+
+iface = gr.Interface(
+    fn=update_output,
+    inputs=[
+        gr.Dropdown(label="Select Tokenization Method", choices=["RecursiveCharacterTextSplitter"]),
+        gr.Textbox(label="Enter Text", lines=10, placeholder="Type or paste text here."),
+        gr.Number(label="Chunk Size", value=DEFAULT_CHUNK_SIZE),
+        gr.Number(label="Chunk Overlap", value=DEFAULT_CHUNK_OVERLAP),
+        gr.Number(label="Number of Chunks to Display", value=DEFAULT_NUM_CHUNKS),
+        gr.Textbox(label="Enter Query for Similarity Search", lines=2, placeholder="Type your query here.")
+    ],
+    outputs=gr.Dataframe(height=900),
+    title="Text Tokenization and Embedding Tool",
+    description="A tool for tokenizing text and calculating embeddings. Now with similarity search feature."
+)
+
+if __name__ == "__main__":
+    iface.launch()

requirements.txt

@@ -0,0 +1,6 @@
+gradio
+pandas
+sentence-transformers
+scikit-learn
+numpy
+langchain