Sentiment Analysis & Review Summarization System

The brief

Developed a Natural Language Processing (NLP) system using Python and BERT to analyze customer sentiment and summarize product reviews, presented through an interactive Streamlit dashboard.

Project Description

I built this project to explore how Natural Language Processing can help brands understand customer opinions more effectively.
I collected product reviews from platforms like Amazon, Flipkart, and Google Play, and processed them through a Python-based NLP pipeline to identify sentiment trends and summarize user feedback.

The process began with data preprocessing — cleaning text, removing noise, and preparing it for analysis using libraries like NLTK, Pandas, and Regex.
I then used a BERT-based sentiment classification model to categorize reviews into positive, negative, and neutral sentiments.

To make the output more insightful, I implemented a text summarization component that automatically condensed long reviews into concise summaries using transformer-based algorithms.
Finally, I built a Streamlit dashboard to visualize the results interactively — showing sentiment distributions, keyword clouds, and top recurring themes extracted from reviews.

What made this project truly engaging was how it combined technical depth with user-centered design — turning abstract AI output into a tool that helps teams understand customer emotions at scale.

Tech Stack

  • Languages: Python
  • Libraries: NLTK, BERT, Transformers, Pandas, Matplotlib, Seaborn
  • Frameworks & Tools: Streamlit, Jupyter Notebook
  • Techniques: Sentiment Analysis, Text Summarization, Data Visualization

Key Learnings

  • Implementing BERT-based NLP pipelines for sentiment classification
  • Building end-to-end text analytics workflows from data cleaning to visualization
  • Simplifying unstructured text into digestible business insights
  • Designing intuitive dashboards to visualize AI results interactively

Screenshots

Creativity reimagined

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