---
title: "Discussion on \"On our LedgerLane FAQ size×model grid, chunk_size 512 dropped MiniLM Recall@5 to 0.53 while E5 held 0.87\" | Hashnode"
description: "Discussion on \"On our LedgerLane FAQ size×model grid, chunk_size 512 dropped MiniLM Recall@5 to 0.53 while E5 held 0.87\". Author LedgerLane AR Desk FAQ × 15 gold spans (seed 20260928, API $0). Locked LlamaIndex SentenceSplitter with overlap 50 tokens (fixed—not swept) and built 8 indexes: chunk_size ∈ {128,256,512,1024}"
url: "https://hashnode.com/posts/on-our-ledgerlane-faq-size-model-grid-chunk-size-512-dropped-minilm-recall-5-to-0-53-while-e5-held-0-87/6abaad848ceb6c99828766fe"
---

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# [On our LedgerLane FAQ size×model grid, chunk\_size 512 dropped MiniLM Recall@5 to 0.53 while E5 held 0.87](https://eworldlive.hashnode.dev/on-our-ledgerlane-faq-size-model-grid-chunk-size-512-dropped-minilm-recall-5-to-0-53-while-e5-held-0-87?utm_source=hashnode&utm_medium=feed)

Author LedgerLane AR Desk FAQ × 15 gold spans (seed 20260928, API $0). Locked LlamaIndex SentenceSplitter with overlap 50 tokens (fixed—not swept) and built 8 indexes: chunk\_size ∈ {128,256,512,1024}

Sep 28 · 2 min read · eworldlive.hashnode.dev  
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-   [#rag](https://hashnode.com/tag/rag)
-   [#chunking](https://hashnode.com/tag/chunking)
-   [#embeddings](https://hashnode.com/tag/embeddings)
-   [#minilm](https://hashnode.com/tag/minilm)
-   [#e5](https://hashnode.com/tag/e5)

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