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Machine Learning · Major Project

Plagiarism Checker with Semantic Similarity

Finds copied and paraphrased passages and highlights the matches

2-3 weeks build

Overview

Compares a submitted document against a reference collection at sentence level. TF-IDF cosine similarity catches near-verbatim copying, while sentence embeddings catch paraphrases that share meaning but not words. Matching passages are highlighted side by side with a similarity score, and a similarity report can be exported per submission.

What makes it stand up

  • 01Lexical and semantic similarity combined in one score
  • 02Sentence-level matching with side-by-side highlighting
  • 03Handles PDF, DOCX and plain-text submissions
  • 04Threshold tuning evaluated on a labelled paraphrase set
  • 05Exportable similarity report for each document

Module breakdown

  1. 01

    Ingestion

    Document parsing and sentence segmentation.

  2. 02

    Lexical match

    TF-IDF vectors with cosine similarity.

  3. 03

    Semantic match

    Sentence-transformer embeddings and nearest-neighbour search.

  4. 04

    Scoring

    Weighted combination with tunable thresholds.

  5. 05

    Report view

    React page with matched passages highlighted.

After this, you will be able to

  • Explain why embeddings catch paraphrase and TF-IDF does not
  • Justify your threshold choice with precision and recall
  • Demo detection on a paraphrased paragraph

Technology stack

  • Python
  • Sentence Transformers
  • scikit-learn
  • FastAPI
  • React

Complete kit

₹6,499₹10,999
-41%

Delivered in under 48 hours

Level
Major Project
Domain
Machine Learning
Build time
2-3 weeks
Difficulty

You receive

  • Complete, commented source code
  • 60-90 page project report (IEEE format)
  • Editable presentation deck
  • Architecture, ER and UML diagrams
  • Local setup and deployment guide
  • Sample dataset or seed data
  • Viva question bank with answers
  • One 45-minute walkthrough call
  • 30 days of doubt-clearing support
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