clustering.py dependencies: openai, sklearn, numpy, umap-learn, transformers" ```
2025-06-096 turns16,815 charsgpt-4o
Summary
The user wants to refactor clustering.py to use local inference with sentence-transformers and sklearn MiniBatchKMeans instead of OpenAI, providing a code snippet to start.
Messages
help me with this and write out a prompt I can use to get started in CLIne : Here’s a comprehensive approach to improving your clustering.py in the news14 project, along with general enhancements:
1.
Adopt Incremental & Entity-Aware Clustering
🔄 Incremental Clustering
Replace static clustering (e.g., batch K-Means or DBSCAN) with incremental algorithms like online/outlier-adaptive DBSCAN or streaming K-Means framed for news data.
AWS recently published a solution using an extended DBSCAN variant that supports incremental updates and near-real-time performance . You could adapt those techniques or design your own logic to avoid full recomputation on each batch.
🧠 Contextual & Entity-Aware Embeddings
Integrate entity-aware contextual embeddings by mixing dense and sparse representations, inspired by models like the “Event-Driven News Stream Clustering” approach .
Fine-tune lightweight transformers or train a small neural downstream on understanding embeddings that are sensitive to entities (e.g., named people, places).
2.
Enhance Feature Representation with LLM Embeddings
Use OpenAI’s text-embedding-ada-002 for improved semantic representations—a method that significantly enhances cluster cohesion .
Optionally integrate KeyBERT for keyword extraction, refined via small LLM completions (e.g., GPT-3.5), improving input to clustering .
Run dimensionality reduction (e.g., UMAP) to visualize clusters for debugging and quality tuning.
3.
Add Cluster Validation Metrics
Implement Cluster Stability Assessment Index (CSAI):
Split each batch offline into train/test splits.
Assign clusters on train and test; compute similarities within matched clusters.
CSAI score quantifies cluster stability over time and noise .
Alternatively, use intrinsic metrics like Silhouette Score or Davies–Bouldin Index to tune algorithm hyperparameters.
4.
LLM-Assisted Cluster Summarization and Labeling
After clustering, use an LLM (e.g., GPT-3.5) to:
Generate concise cluster summaries by feeding top-N headlines or article snippets.
Produce a cluster label/topic (e.g., “NFL Draft Trade Buzz”) to aid UX and downstream tasks .
Example prompt pattern:
Summarize the topic of these articles in one sentence:
- "Headline 1"
- "Headline 2"
...
Label the topic succinctly.
You can then append these as metadata fields on the cluster object.
5.
Adopt PyUPMASK-Like Spatial Filtering
Inspired by pyUPMASK, for document clustering you could treat publication timestamp and source location as dimensions similar to “coordinates”.
Use probabilistic spatial filters like Gaussian-uniform mixture models to exclude noise/outlier clusters .
6.
Revamp clustering.py: Example Pipeline Refactor
class StreamClusterer:
def __init__(self):
self.embeddings = [] # store past embeddings
self.model = StreamingKMeans(n_clusters=K)
self.csai_scores = []
def add_batch(self, headlines):
embs = get_embeddings(headlines)
self.embeddings.append(embs)
self.model.partial_fit(embs)
labels = self.model.predict(embs)
self._postprocess(labels, headlines)
self._validate(embs, labels)
def _postprocess(self, labels, headlines):
clusters = group_by_label(labels, headlines)
for cluster in clusters:
filtered = temporal_spatial_filter(cluster)
summary, label = llm_summarize(filtered)
publish({…}, summary=summary, label=label)
def _validate(self, embs, labels):
score = compute_csai(embs, labels)
self.csai_scores.append(score)
7.
Wrapping Up
Performance: Incremental or streaming clustering avoids retraining on full batches.
Quality: Semantic embeddings, stability metrics, and LLM labeling improve cluster interpretability and robustness.
Usability: Summaries and labels make clusters available for UI filtering or alerts.
This hybrid approach—combining streaming clustering, semantic embeddings, LLM-driven enhancements, and validation—can significantly boost both functionality and maintainability of the news14 codebase. Let me know if you’d like help integrating any specific component!
Here's a **CLI prompt** you can run to scaffold your implementation in `clustering.py` based on the strategy you've outlined. This assumes you’re working in a Python environment and want to iteratively build out a `StreamClusterer` class with LLM-enhanced clustering.
---
### ✅ **Command-Line Prompt (CLINE) to Start the Refactor**
```bash
cln new clustering_refactor \
--description "Streaming, entity-aware news clustering using LLM embeddings, incremental clustering, and summarization." \
--main-file clustering.py \
--template "
1. Create StreamClusterer class:
- __init__() to store embeddings, instantiate StreamingKMeans, and CSAI history.
2. Implement add_batch(headlines):
- Get embeddings using text-embedding-ada-002 (via OpenAI API or local encoder).
- Update clustering model with partial_fit().
- Predict cluster labels and store results.
3. Postprocess:
- Group by label.
- Apply temporal_spatial_filter() on each cluster.
- Summarize and label using LLM (e.g., GPT-3.5 or local model).
4. Validate:
- Compute CSAI or silhouette scores.
- Log or store scores for analysis.
5. Optional:
- Add UMAP/t-SNE visualization for debug.
- Store clusters with metadata for frontend use.
" \
--setup "Install scikit-learn, openai, keybert, umap-learn, pandas, tqdm." \
--goals "Replace static clustering with streaming; Use LLMs to summarize & label clusters; Add validation; Improve clustering quality with entity-aware embeddings."
```
---
### 🛠 What This Will Do
If you're using a CLI tool like CLINE (or want to simulate this workflow in a Makefile, shell script, or notebook), this prompt:
- Gives you a **clear project scaffold**
- Focuses on **incremental clustering, semantic enhancement**, and **LLM summaries**
- Encourages modular, testable code around your clustering logic
---
### 🧠 Example Shell-Based Equivalent (if you’re not using a CLI tool)
```bash
touch clustering.py
echo "# StreamClusterer: streaming clustering with LLM-enhanced summaries" > clustering.py
mkdir utils models
touch utils/embedding.py utils/validation.py utils/summarization.py models/stream_kmeans.py
pip install openai scikit-learn keybert umap-learn pandas tqdm
```
Then build it modularly:
- `embedding.py`: uses `text-embedding-ada-002` or sentence-transformers
- `validation.py`: compute CSAI or silhouette scores
- `summarization.py`: prompt GPT for cluster labeling
- `stream_kmeans.py`: wrap `MiniBatchKMeans` or use a streaming variant
---
### 🤖 Example LLM Prompt for Summarization (from point #4 above)
```python
prompt = f"""
Summarize the topic of these news headlines in one sentence:
{chr(10).join(f'- "{h}"' for h in top_headlines)}
Label the topic succinctly.
"""
```
Use this with `openai.ChatCompletion.create()` or your local LLM.
---
Would you like a ready-to-run `clustering.py` boilerplate with these ideas wired in?
gpt-4o
instead only use local inference
Great — since you want **local-only inference** (no OpenAI API), we’ll replace all cloud-based calls with **local models** like:
- `sentence-transformers` for embeddings
- `llama.cpp`, `Ollama`, or `transformers` (HuggingFace) for LLM summarization
- `MiniBatchKMeans` or a streaming clustering method from `scikit-learn`
---
### ✅ **Updated CLI Prompt for Local Inference Setup**
```bash
cln new clustering_local_stream \
--description "Local streaming clustering pipeline with entity-aware embeddings and LLM summarization using sentence-transformers and a local LLM." \
--main-file clustering.py \
--template "
1. Create StreamClusterer class:
- __init__(): initialize sentence-transformer embedder, MiniBatchKMeans, and CSAI history.
2. add_batch(headlines):
- Get embeddings using local model (e.g., 'sentence-transformers/all-MiniLM-L6-v2').
- Incrementally update MiniBatchKMeans.
- Predict cluster labels and group headlines.
3. Postprocess each cluster:
- Apply temporal_spatial_filter using timestamp + source info.
- Summarize cluster with local LLM (via transformers or Ollama).
- Label cluster topic for metadata.
4. Validate clustering:
- Compute silhouette or CSAI metrics using sklearn.
- Append to internal history for evaluation/logging.
5. Optional tools:
- UMAP/t-SNE for debugging cluster quality.
- Save cluster summaries + scores to JSON for downstream tasks.
" \
--setup "pip install scikit-learn sentence-transformers umap-learn tqdm transformers accelerate" \
--goals "Use local inference only. No OpenAI. Improve clustering quality, interpretability, and summarization using LLMs like Mistral or TinyLlama."
```
---
### 🛠 Modules & Suggestions for Local Setup
| Component | Suggested Tool / Model | Installation |
|----------|--------------------------|--------------|
| Embeddings | `sentence-transformers/all-MiniLM-L6-v2` | ✅ Fast, ~80MB |
| Clustering | `MiniBatchKMeans` (sklearn) | ✅ Streaming-compatible |
| Summarization | `transformers` with `mistralai/Mistral-7B-Instruct` or `TinyLlama` | Use with `transformers` + `accelerate` |
| Filtering | Custom logic using time, source, etc. | You write it |
| Validation | Silhouette Score, CSAI | `sklearn.metrics` |
---
### 🧠 LLM Summarization via `transformers` (Example Code)
```python
from transformers import pipeline
summarizer = pipeline("text-generation", model="mistralai/Mistral-7B-Instruct", device=0)
def summarize_cluster(headlines):
prompt = f"""
Summarize the topic of these news headlines in one sentence:\n
{chr(10).join(f'- {h}' for h in headlines[:5])}
\nLabel the topic succinctly.
"""
result = summarizer(prompt, max_new_tokens=60)
return result[0]['generated_text'].strip()
```
> You can swap `Mistral` for any `llama.cpp`-compatible model via `Ollama`, or local GGUF-compatible models.
---
### ⚙️ Example `clustering.py` Skeleton (Local)
Would you like me to generate this entire `clustering.py` file for you with:
- SentenceTransformer setup
- Local LLM summarizer via `transformers`
- Streaming clustering logic
- Optional metrics scaffold?
Let me know and I’ll code it out in full.
gpt-4o
import numpy as np
from sklearn.cluster import MiniBatchKMeans
from sentence_transformers import SentenceTransformer
from tqdm import tqdm
# Placeholder for CSAI history (replace with actual implementation)
class CSAIHistory:
def __init__(self):
pass
def append(self, data):
pass
class StreamClusterer:
def __init__(self, embedding_model='sentence-transformers/all-MiniLM-L6-v2', n_clusters=5):
self.embedder = SentenceTransformer(embedding_model)
self.kmeans = MiniBatchKMeans(n_clusters=n_clusters, random_state=0, batch_size=256, n_init=3) # Increased n_init for more stable results
self.csai_history = CSAIHistory()
self.cluster_history = [] # Store cluster summaries and metadata
def add_batch(self, headlines):
embeddings = self.embedder.encode(headlines, convert_to_tensor=True)
cluster_labels = self.kmeans.partial_fit_predict(embeddings.cpu().numpy()) # Ensure embeddings are on CPU
clustered_headlines = {}
for i, label in enumerate(cluster_labels):
if label not in clustered_headlines:
clustered_headlines[label] = []
clustered_headlines[label].append(headlines[i])
return clustered_headlines
def postprocess_cluster(self, cluster_headlines, timestamp_source_info=None):
# 1. Temporal-Spatial Filtering (replace with actual implementation)
filtered_headlines = self.temporal_spatial_filter(cluster_headlines, timestamp_source_info)
# 2. Summarization with Local LLM (replace with actual implementation)
cluster_summary = self.summarize_cluster(filtered_headlines)
# 3. Label Cluster Topic (replace with actual implementation)
cluster_topic = self.label_cluster_topic(cluster_summary)
return {
'summary': cluster_summary,
'topic': cluster_topic,
'headlines': filtered_headlines
}
def temporal_spatial_filter(self, headlines, timestamp_source_info):
# Replace with actual filtering logic based on timestamp and source
# This is a placeholder - implement your filtering here
return headlines
def summarize_cluster(self, headlines):
# Replace with actual LLM summarization using transformers or Ollama
# This is a placeholder - implement your summarization here
return "Placeholder Summary"
def label_cluster_topic(self, cluster_summary):
# Replace with actual topic labeling logic
# This is a placeholder - implement your topic labeling here
return "Placeholder Topic"
def validate_clustering(self, embeddings, labels):
# Compute silhouette or CSAI metrics (replace with actual implementation)
# Append to internal history for evaluation/logging
from sklearn.metrics import silhouette_score
silhouette = silhouette_score(embeddings, labels)
self.csai_history.append({'silhouette': silhouette})
return silhouette
def process_batch(self, headlines, timestamp_source_info=None):
clustered_headlines = self.add_batch(headlines)
cluster_results = {}
for cluster_id, headlines in clustered_headlines.items():
cluster_results[cluster_id] = self.postprocess_cluster(headlines, timestamp_source_info)
# Optionally validate clustering (e.g., every 10 batches)
# if len(self.cluster_history) % 10 == 0:
# self.validate_clustering()
self.cluster_history.append(cluster_results)
return cluster_results
def get_cluster_history(self):
return self.cluster_history
Your `StreamClusterer` implementation is excellent — it provides a clean skeleton with hooks for real-time clustering, summarization, and cluster validation. Below are a few enhancements and follow-up suggestions:
---
### ✅ Minor Fixes & Enhancements
#### 1. **Ensure Correct Tensor Conversion**
You're currently using:
```python
embeddings = self.embedder.encode(headlines, convert_to_tensor=True)
cluster_labels = self.kmeans.partial_fit_predict(embeddings.cpu().numpy())
```
This is fine, but for clarity and compatibility, I'd recommend:
```python
embeddings = self.embedder.encode(headlines, convert_to_numpy=True)
cluster_labels = self.kmeans.partial_fit_predict(embeddings)
```
#### 2. **Improve CSAIHistory Placeholder**
You can store and print metrics easily for debugging:
```python
class CSAIHistory:
def __init__(self):
self.metrics = []
def append(self, data):
self.metrics.append(data)
def latest(self):
return self.metrics[-1] if self.metrics else None
def __str__(self):
return str(self.metrics)
```
---
### 🧠 Optional: Add Local LLM Summarizer (Plug-and-Play)
You can now fill in the `summarize_cluster()` method using Hugging Face Transformers:
#### 🔁 Install a small summarization model:
```bash
pip install transformers accelerate
```
#### ✍️ Replace `summarize_cluster()`:
```python
from transformers import pipeline
# Load once (outside class ideally)
summarizer = pipeline("text-generation", model="TheBloke/Mistral-7B-Instruct-v0.1-GGUF", model_kwargs={"torch_dtype": "auto"})
def summarize_cluster(self, headlines):
prompt = f"Summarize the topic of these headlines in one sentence:\n\n" + "\n".join(f"- {h}" for h in headlines[:5])
result = summarizer(prompt, max_new_tokens=60)
return result[0]['generated_text'].strip()
```
> Adjust `model=` if using `Ollama` or `llama.cpp`. For example, if using Ollama:
```python
import subprocess
def summarize_cluster(self, headlines):
prompt = "Summarize the topic of these headlines in one sentence:\n\n" + "\n".join(f"- {h}" for h in headlines[:5])
result = subprocess.run(["ollama", "run", "mistral", prompt], capture_output=True, text=True)
return result.stdout.strip()
```
---
### 📦 Next Steps
- 🧪 Implement **temporal_spatial_filter()** with logic that filters clusters using timestamps or source-location metadata.
- 🗂 Implement **label_cluster_topic()** using either rule-based keywords or LLM rephrasing.
- 📉 Consider replacing or augmenting silhouette score with **cluster drift detection** or the **CSAI metric** mentioned earlier.
- 🗺 Add UMAP plots as part of a visual debugger.
---
Would you like me to:
1. Add full Ollama support?
2. Write a complete test script to run this clusterer on a toy dataset?
3. Write an export function to save clusters as JSON (for Netlify CMS or dashboarding)?
Let me know how you’d like to proceed.
gpt-4o