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Tokenization notebook: change title #178

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Jan 30, 2024
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Tokenization notebook: change title #178

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7 changes: 4 additions & 3 deletions notebooks/document-chunking/tokenization.ipynb
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
"id": "s49gpkvZ7q53"
},
"source": [
"# Tokenization for Semantic Search (ELSER and E5)\n",
"# Calculating tokens for Semantic Search (ELSER and E5)\n",
"\n",
"[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/elastic/elasticsearch-labs/blob/main/notebooks/search/tokenization.ipynb)\n",
"\n",
Expand Down Expand Up @@ -217,9 +217,10 @@
"outputs": [],
"source": [
"SEMANTIC_SEARCH_TOKEN_LIMIT = 510 # 512 minus space for the 2 special tokens\n",
"ELSER_TOKEN_OVERLAP = 0.5 # 50% token overlap between chunks is recommended for ELSER\n",
"\n",
"def chunk(tokens, chunk_size=SEMANTIC_SEARCH_TOKEN_LIMIT):\n",
" step_size = round(chunk_size * .5) # 50% token overlap between chunks is recommended for ELSER\n",
"def chunk(tokens, chunk_size=SEMANTIC_SEARCH_TOKEN_LIMIT, overlap_ratio=ELSER_TOKEN_OVERLAP):\n",
" step_size = round(chunk_size * overlap_ratio)\n",
"\n",
" for i in range(0, len(tokens), step_size):\n",
" yield tokens[i:i+chunk_size]"
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