docs: enhance README with metrics, compression ratios, and usage examples
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README.md
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license: mit
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# Household Power BPE Tokenizer
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A BPE (Byte-Pair Encoding) tokenizer trained on household power consumption data. This tokenizer
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- **Vocabulary Size:** 8,000 tokens
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- **Model Type:** BPE (Byte-Pair Encoding)
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- **Character Coverage:** 100%
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- **
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##
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##
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- Token IDs
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- Token strings
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- Decoded output
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###
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###
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```python
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import sentencepiece as spm
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# Load the model
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sp = spm.SentencePieceProcessor(model_file="household_power_bpe.model")
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# Encode
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text = "DATE=16/12/2006|TIME=17:24:00|GAP=4.216"
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token_ids = sp.encode(text, out_type=int)
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token_strings = sp.encode(text, out_type=str)
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# Decode
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decoded = sp.decode(token_ids)
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```
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- `household_power_bpe.model` - Trained SentencePiece model
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- `household_power_bpe.vocab` - Vocabulary file
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- `requirements.txt` - Python dependencies
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license: mit
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---
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# Household Power BPE Tokenizer ⚡
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A specialized BPE (Byte-Pair Encoding) tokenizer trained on household power consumption time-series data. This tokenizer achieves efficient compression of structured sensor data while maintaining perfect reconstruction.
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🌐 **[Try it live on Hugging Face Spaces!](https://huggingface.co/spaces/chethan999/household-power-bpe-tokenizer)**
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## 📊 Performance Metrics
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- **Compression Ratio:** ~5.9 characters per token (83% reduction vs character-level)
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- **Vocabulary Size:** 8,000 tokens
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- **Character Coverage:** 100%
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- **Lossless Encoding:** Perfect reconstruction guaranteed
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### Example Compression
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| Metric | Value |
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|--------|-------|
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| Input Characters | 107 |
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| Output Tokens | 18 |
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| Compression Ratio | 5.94:1 |
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| Model Size | 381 KB |
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**Sample Input:**
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```
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DATE=16/12/2006|TIME=17:24:00|GAP=4.216|GRP=0.418|V=234.840|GI=18.400|SM1=0.000|SM2=1.000|SM3=17.000
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```
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**Tokenized Output:** 18 tokens
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```
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['▁DATE', '=16/12/2006|', 'TIME', '=17:24:00|', 'GAP', '=4.216|', 'GRP', '=0.418|',
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'V', '=234.840|', 'GI', '=18.400|', 'SM', '1=0.000|', 'SM', '2=1.000|', 'SM', '3=17.000']
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```
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## 🎯 Model Details
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- **Model Type:** BPE (Byte-Pair Encoding)
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- **Framework:** SentencePiece
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- **Vocabulary Size:** 8,000 tokens
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- **Training Data:** Household power consumption dataset
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- **Special Tokens:** `<pad>`, `<unk>`, `<s>`, `</s>`
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- **Max Sequence Length:** 512 tokens
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- **Character Coverage:** 100%
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## ✨ Features
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- **Domain-Specific:** Optimized for time-series power consumption data
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- **Structured Format:** Handles pipe-separated key-value pairs efficiently
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- **Numeric Awareness:** Efficiently encodes dates, times, and decimal values
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- **Lossless Compression:** Perfect reconstruction of original text
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- **Fast Inference:** Optimized for real-time encoding/decoding
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- **Web Interface:** Interactive Gradio app for easy testing
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## 🚀 Usage
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### 1. Web Interface (Easiest)
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Visit **[https://huggingface.co/spaces/chethan999/household-power-bpe-tokenizer](https://huggingface.co/spaces/chethan999/household-power-bpe-tokenizer)** and:
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1. Enter your power consumption data in the input box
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2. Click "Tokenize" to see:
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- Number of tokens
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- Token IDs
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- Token strings
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- Decoded output
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3. Try the example inputs provided
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### 2. Python API
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```python
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import sentencepiece as spm
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# Load the model
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sp = spm.SentencePieceProcessor(model_file="household_power_bpe.model")
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# Encode text to tokens
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text = "DATE=16/12/2006|TIME=17:24:00|GAP=4.216|GRP=0.418|V=234.840"
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token_ids = sp.encode(text, out_type=int)
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token_strings = sp.encode(text, out_type=str)
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# Decode tokens back to text
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decoded = sp.decode(token_ids)
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print(f"Original: {text}")
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print(f"Tokens: {token_ids}")
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print(f"Token Strings: {token_strings}")
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print(f"Decoded: {decoded}")
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```
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### 3. Download from Hugging Face
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```python
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from huggingface_hub import hf_hub_download
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# Download the model
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model_path = hf_hub_download(
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repo_id="chethan999/household-power-bpe-tokenizer",
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filename="household_power_bpe.model",
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repo_type="space"
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)
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# Use the downloaded model
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import sentencepiece as spm
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sp = spm.SentencePieceProcessor(model_file=model_path)
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```
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## 📁 Files
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| File | Description | Size |
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|------|-------------|------|
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| `household_power_bpe.model` | Trained SentencePiece BPE model | 381 KB |
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| `household_power_bpe.vocab` | Vocabulary file (8,000 tokens) | 123 KB |
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| `app.py` | Gradio web interface | 2.7 KB |
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| `requirements.txt` | Python dependencies | < 1 KB |
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| `infrence.py` | Example inference script | < 1 KB |
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## 🔧 Installation
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```bash
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pip install sentencepiece gradio transformers
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```
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## 📝 Data Format
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The tokenizer is optimized for pipe-separated key-value format commonly used in sensor data:
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```
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KEY1=value1|KEY2=value2|KEY3=value3|...
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```
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**Supported Fields:**
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- `DATE` - Date values (e.g., 16/12/2006)
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- `TIME` - Time values (e.g., 17:24:00)
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- `GAP` - Global Active Power
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- `GRP` - Global Reactive Power
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- `V` - Voltage
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- `GI` - Global Intensity
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- `SM1`, `SM2`, `SM3` - Sub-metering values
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## 🎯 Use Cases
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- **Data Compression:** Reduce storage requirements for time-series sensor data
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- **ML Preprocessing:** Tokenize power consumption data for transformer models
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- **Data Transmission:** Efficient encoding for IoT and sensor networks
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- **Analysis Pipelines:** Standardized tokenization for downstream tasks
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## 📊 Training Details
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- **Algorithm:** Byte-Pair Encoding (BPE)
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- **Vocabulary Size:** 8,000 tokens (optimized for >5,000 requirement)
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- **Character Coverage:** 100% (handles all input characters)
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- **Special Tokens:** PAD=0, UNK=1, BOS=2, EOS=3
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- **Framework:** Google SentencePiece
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## 🤝 Contributing
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Issues and pull requests are welcome! Visit the [GitHub repository](https://github.com/chethan999/household-power-bpe-tokenizer) for the source code.
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## 📄 License
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MIT License - Feel free to use in your projects!
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## 🔗 Links
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- 🌐 [Live Demo on Hugging Face Spaces](https://huggingface.co/spaces/chethan999/household-power-bpe-tokenizer)
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- 📦 [SentencePiece Documentation](https://github.com/google/sentencepiece)
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- 🤗 [Hugging Face Transformers](https://huggingface.co/docs/transformers)
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---
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Built with ❤️ using SentencePiece and Gradio
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