ollama/examples/python-rag-newssummary/utils.py
Matt Williams c5c8b4b16a added python rag news summary
Signed-off-by: Matt Williams <m@technovangelist.com>
2023-10-17 16:41:28 -07:00

108 lines
3.5 KiB
Python

import curses
import feedparser
import requests
import unicodedata
import json
from newspaper import Article
from bs4 import BeautifulSoup
from nltk.tokenize import sent_tokenize, word_tokenize
import numpy as np
from sklearn.neighbors import NearestNeighbors
from mattsollamatools import chunker
# Create a dictionary to store topics and their URLs
topic_urls = {
"Mac": "https://9to5mac.com/guides/mac/feed",
"News": "http://www.npr.org/rss/rss.php?id=1001",
"Nvidia": "https://nvidianews.nvidia.com/releases.xml",
"Raspberry Pi": "https://www.raspberrypi.com/news/feed/",
"Music": "https://www.billboard.com/c/music/music-news/feed/"
}
# Use curses to create a menu of topics
def menu(stdscr):
chosen_topic = get_url_for_topic(stdscr)
url = topic_urls[chosen_topic] if chosen_topic in topic_urls else "Topic not found"
stdscr.addstr(len(topic_urls) + 3, 0, f"Selected URL for {chosen_topic}: {url}")
stdscr.refresh()
return chosen_topic
# You have chosen a topic. Now return the url for that topic
def get_url_for_topic(stdscr):
curses.curs_set(0) # Hide the cursor
stdscr.clear()
stdscr.addstr(0, 0, "Choose a topic using the arrow keys (Press Enter to select):")
# Create a list of topics
topics = list(topic_urls.keys())
current_topic = 0
while True:
for i, topic in enumerate(topics):
if i == current_topic:
stdscr.addstr(i + 2, 2, f"> {topic}")
else:
stdscr.addstr(i + 2, 2, f" {topic}")
stdscr.refresh()
key = stdscr.getch()
if key == curses.KEY_DOWN and current_topic < len(topics) - 1:
current_topic += 1
elif key == curses.KEY_UP and current_topic > 0:
current_topic -= 1
elif key == 10: # Enter key
return topic_urls[topics[current_topic]]
# Get the last N URLs from an RSS feed
def getUrls(feed_url, n=20):
feed = feedparser.parse(feed_url)
entries = feed.entries[-n:]
urls = [entry.link for entry in entries]
return urls
# Often there are a bunch of ads and menus on pages for a news article. This uses newspaper3k to get just the text of just the article.
def getArticleText(url):
article = Article(url)
article.download()
article.parse()
return article.text
def get_summary(text):
systemPrompt = "Write a concise summary of the text, return your responses with 5 lines that cover the key points of the text given."
prompt = text
url = "http://localhost:11434/api/generate"
payload = {
"model": "mistral-openorca",
"prompt": prompt,
"system": systemPrompt,
"stream": False
}
payload_json = json.dumps(payload)
headers = {"Content-Type": "application/json"}
response = requests.post(url, data=payload_json, headers=headers)
return json.loads(response.text)["response"]
# Perform K-nearest neighbors (KNN) search
def knn_search(question_embedding, embeddings, k=5):
X = np.array([item['embedding'] for article in embeddings for item in article['embeddings']])
source_texts = [item['source'] for article in embeddings for item in article['embeddings']]
# Fit a KNN model on the embeddings
knn = NearestNeighbors(n_neighbors=k, metric='cosine')
knn.fit(X)
# Find the indices and distances of the k-nearest neighbors
distances, indices = knn.kneighbors(question_embedding, n_neighbors=k)
# Get the indices and source texts of the best matches
best_matches = [(indices[0][i], source_texts[indices[0][i]]) for i in range(k)]
return best_matches