From b0b8f7ffbf563f341745e86bfe85f080f6a8db27 Mon Sep 17 00:00:00 2001 From: Mitja Felicijan Date: Wed, 8 Dec 2021 11:59:37 +0100 Subject: A bunch of changes --- ...g-sentiment-analysis-for-clickbait-detection.md | 88 ++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 posts/2019-10-19-using-sentiment-analysis-for-clickbait-detection.md (limited to 'posts/2019-10-19-using-sentiment-analysis-for-clickbait-detection.md') diff --git a/posts/2019-10-19-using-sentiment-analysis-for-clickbait-detection.md b/posts/2019-10-19-using-sentiment-analysis-for-clickbait-detection.md new file mode 100644 index 0000000..831b490 --- /dev/null +++ b/posts/2019-10-19-using-sentiment-analysis-for-clickbait-detection.md @@ -0,0 +1,88 @@ +--- +Title: Using sentiment analysis for clickbait detection in RSS feeds +Description: Using Python with sentiment analysis to detect if titles in RSS feeds are clickbait +Slug: using-sentiment-analysis-for-clickbait-detection-in-rss-feeds +Listing: true +Created: 2019-10-19 +Tags: [] +--- + +## Initial thoughts + +One of the things that interested me for a while now is if major well established news sites use click bait titles to drive additional traffic to their sites and generate additional impressions. + +Goal is to see how article titles and actual content of article differ from each other and see if titles are clickbaited. + +## Preparing and cleaning data + +For this example I opted to just use RSS feed from a new website and decided to go with [The Guardian](https://www.theguardian.com) World news. While this gets us limited data (~40) articles and also description (actual content) is trimmed this really doesn't reflect the actual article contents. + +To get better content I could use web scraping and use RSS as link list and fetch contents directly from website, but for this simple example this will suffice. + +There are couple of requirements we need to install before we continue: + +- `pip3 install feedparser` (parses RSS feed from url) +- `pip3 install vaderSentiment` (does sentiment polarity analysis) +- `pip3 install matplotlib` (plots chart of results) + +So first we need to fetch RSS data and sanitize HTML content from description. + +```python +import re +import feedparser + +feed_url = "https://www.theguardian.com/world/rss" +feed = feedparser.parse(feed_url) + +# sanitize html +for item in feed.entries: + item.description = re.sub('<[^<]+?>', '', item.description) +``` + +## Perform sentiment analysis + +Since we now have cleaned up data in our `feed.entries` object we can start with performing sentiment analysis. + +There are many sentiment analysis libraries available that range from rule-based sentiment analysis up to machine learning supported analysis. To keep things simple I decided to use rule-based analysis library [vaderSentiment](https://github.com/cjhutto/vaderSentiment) from [C.J. Hutto](https://github.com/cjhutto). Really nice library and quite easy to use. + +```python +from vaderSentiment.vaderSentiment import SentimentIntensityAnalyzer +analyser = SentimentIntensityAnalyzer() + +sentiment_results = [] +for item in feed.entries: + sentiment_title = analyser.polarity_scores(item.title) + sentiment_description = analyser.polarity_scores(item.description) + sentiment_results.append([sentiment_title['compound'], sentiment_description['compound']]) +``` + +Now that we have this data in a shape that is compatible with matplotlib we can plot results to see the difference between title and description sentiment of an article. + +```python +import matplotlib.pyplot as plt + +plt.rcParams['figure.figsize'] = (15, 3) +plt.plot(sentiment_results, drawstyle='steps') +plt.title('Sentiment analysis relationship between title and description (Guardian World News)') +plt.legend(['title', 'description']) +plt.show() +``` + +## Results and assets + +1. Because of the small sample size further conclusions are impossible to make. +2. Rule-based approach may not be the best way of doing this. By using deep learning we would be able to get better insights. +3. **Next step would be to** periodically fetch RSS items and store them over a longer period of time and then perform analysis again and use either machine learning or deep learning on top of it. + +![Relationship between title and description](/assets/sentiment-analysis/guardian-sa-title-desc-relationship.png) + +Figure above displays difference between title and description sentiment for specific RSS feed item. 1 means positive and -1 means negative sentiment. + +[ยป Download Jupyter Notebook](/assets/sentiment-analysis/sentiment-analysis.ipynb) + +## Going further + +- [Twitter Sentiment Analysis by Bryan Schwierzke](https://github.com/bswiss/news_mood) +- [AFINN-based sentiment analysis for Node.js by Andrew Sliwinski](https://github.com/thisandagain/sentiment) +- [Sentiment Analysis with LSTMs in Tensorflow by Adit Deshpande](https://github.com/adeshpande3/LSTM-Sentiment-Analysis) +- [Sentiment analysis on tweets using Naive Bayes, SVM, CNN, LSTM, etc. by Abdul Fatir](https://github.com/abdulfatir/twitter-sentiment-analysis) -- cgit v1.2.3