| janitor.py contains a script to remove benchmark data contamination from training data sets. | |
| It uses the approach described in the [GPT-3 paper](https://arxiv.org/abs/2005.14165). | |
| ## Algorithm | |
| 1) Collects all contamination text files that are to be removed from training data | |
| 2) Filters training data by finding `N`gram matches between the training data | |
| and any contamination | |
| 1) `N`grams ignore case and punctuation and are split on whitespace. | |
| 2) Matching `N`gram substrings are removed, as is a `window_to_remove` character window around | |
| the match, splitting the training data into chunks | |
| 3) Any chunks less than `minimum_slice_length` are removed | |
| 4) Training data sets split into more than `too_dirty_cutoff` are considered | |
| completey contaminated and removed | |
| OpenAI used: | |
| ``` | |
| ngram_n = 13 | |
| window_to_remove = 200 | |
| minimum_slice_length = 200 | |
| too_dirty_cutoff = 10 | |
| ``` | |
| ## Compiling | |
| Janitor can be used as a pure python program, but it is much faster if the ngram | |
| code is run in C++. To compile the C++ code, run | |
| ``` | |
| pip install pybind11 | |
| c++ -O3 -Wall -shared -std=c++11 -fPIC $(python3 -m pybind11 --includes) janitor_util.cpp -o janitor_util$(python3-config --extension-suffix) | |
| ``` | |
| MacOS users: If your compiler isn't linked to Python, you may need to add to the above `-undefined dynamic_lookup`. \ | |
| Linux users: If your compiler isn't linked to Python, you may need to follow these steps: | |
| 1. Rename the compiled code file to `janitor_util.so`. | |
| 2. Before running `import Janitor` in your code, add `sys.path.append("your/relative/path/to/janitor_util.so")` so that Python knows the location of `janitor_util.so`. | |