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README.md
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# 🔐 Encrypted Text Classifier – 20 Newsgroups Cipher Challenge
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This project is built for the [Kaggle Ciphertext Challenge](https://www.kaggle.com/competitions/20-newsgroups-ciphertext-challenge), where the goal is to classify encrypted text documents into 20 different newsgroup categories.
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🎯 Even without decrypting the text, we trained a character-level machine learning model that achieves over **63% accuracy**.
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## 📂 Project Structure
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cipher-classifier/
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├── app.py # Streamlit app
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├── cipher_classifier.pkl # Pickled model + vectorizer
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├── train.csv # Kaggle training data
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├── requirements.txt # Libraries for deployment
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└── README.md
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## 🧠 Model Overview
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- **Input:** Ciphertext strings (unreadable encrypted text)
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- **Vectorization:** `CountVectorizer` with char-level n-grams (1 to 3)
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- **Model:** Logistic Regression (sklearn)
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- **Accuracy:** ~63% (without decryption)
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---
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Example Output
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Input (Ciphertext) Predicted Label
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['W')(7x1zay7Hb3... 15
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Tx4a8M\HNsyp;HM... 8
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📦 Deployment
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This app is designed to run on:
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🟢 Hugging Face Spaces
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🟢 Streamlit Cloud
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🔵 GitHub
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📌 Kaggle Link
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You can download the dataset from the official competition:
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👉 Kaggle – 20 Newsgroups Ciphertext Challenge
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cipher_classifier.pkl
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version https://git-lfs.github.com/spec/v1
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oid sha256:f7d71b1fcda5760dbc2df3c4bb7de6ba87832e480b6a0ae337b9bd9bebc8aaf5
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size 185929
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