mirror of
https://github.com/hwchase17/langchain
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c998569c8f
#docs: text splitters improvements
Changes are only in the Jupyter notebooks.
- added links to the source packages and a short description of these
packages
- removed " Text Splitters" suffixes from the TOC elements (they made
the list of the text splitters messy)
- moved text splitters, based on the length function into a separate
list. They can be mixed with any classes from the "Text Splitters", so
it is a different classification.
## Who can review?
@hwchase17 - project lead
@eyurtsev
@vowelparrot
NOTE: please, check out the results of the `Python code` text splitter
example (text_splitters/examples/python.ipynb). It looks suboptimal.
105 lines
2.6 KiB
Plaintext
105 lines
2.6 KiB
Plaintext
{
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"cells": [
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{
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"cell_type": "markdown",
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"id": "7683b36a",
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"metadata": {},
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"source": [
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"# tiktoken (OpenAI) tokenizer\n",
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"\n",
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">[tiktoken](https://github.com/openai/tiktoken) is a fast `BPE` tokenizer created by `OpenAI`.\n",
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"\n",
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"\n",
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"We can use it to estimate tokens used. It will probably be more accurate for the OpenAI models.\n",
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"\n",
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"1. How the text is split: by character passed in\n",
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"2. How the chunk size is measured: by `tiktoken` tokenizer"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "6c4ef83e-f43a-4658-ad1a-3952e0a5bbe7",
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"metadata": {},
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"outputs": [],
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"source": [
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"#!pip install tiktoken"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"id": "1ad2d0f2",
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"metadata": {},
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"outputs": [],
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"source": [
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"# This is a long document we can split up.\n",
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"with open('../../../state_of_the_union.txt') as f:\n",
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" state_of_the_union = f.read()\n",
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"from langchain.text_splitter import CharacterTextSplitter"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"id": "825f7c0a",
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"metadata": {},
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"outputs": [],
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"source": [
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"text_splitter = CharacterTextSplitter.from_tiktoken_encoder(chunk_size=100, chunk_overlap=0)\n",
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"texts = text_splitter.split_text(state_of_the_union)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"id": "ae35d165",
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Madam Speaker, Madam Vice President, our First Lady and Second Gentleman. Members of Congress and the Cabinet. Justices of the Supreme Court. My fellow Americans. \n",
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"\n",
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"Last year COVID-19 kept us apart. This year we are finally together again. \n",
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"\n",
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"Tonight, we meet as Democrats Republicans and Independents. But most importantly as Americans. \n",
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"\n",
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"With a duty to one another to the American people to the Constitution.\n"
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]
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}
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],
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"source": [
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"print(texts[0])"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.10.6"
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},
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"vscode": {
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"interpreter": {
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"hash": "aee8b7b246df8f9039afb4144a1f6fd8d2ca17a180786b69acc140d282b71a49"
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}
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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