Update README.md

README.md

@@ -1,3 +1,90 @@
----
-license: apache-2.0
----
+---
+# HF Dataset Card metadata
+pretty_name: "AMZN SEC Filings – Chunk-level Corpus (10-K, 10-Q, 8-K)"
+license: mit
+language:
+  - en
+tags:
+  - finance
+  - sec-edgar
+  - chromadb
+  - retrieval
+  - embeddings
+  - amzn
+task_categories:
+  - text-retrieval
+  - question-answering
+size_categories:
+  - 100K<n<1M
+source_datasets:
+  - external:sec-edgar                # original raw source
+---
+# AMZN SEC Filings – Chunk-level Corpus (10-K, 10-Q, 8-K)
+
+<p align="center">
+  <img alt="Amazon logo" width="120" src="https://upload.wikimedia.org/wikipedia/commons/a/a9/Amazon_logo.svg">
+</p>
+
+A ready-to-use, **chunk-level** corpus of Amazon's (AMZN) recent SEC filings
+(10-K, 10-Q, and 8-K).  
+Each paragraph *and* sentence is stored together with rich metadata,
+making the dataset ideal for:
+
+* semantic search / RAG pipelines (ChromaDB, FAISS, Weaviate, …)
+* question-answering over financial filings
+* experimenting with financial-domain embeddings
+
+> Time span : last **5 fiscal years** (rolling window, as of 2025-05-11)  
+> Collection : 10-K, 10-Q, 8-K (including MD&A summaries & optional exhibits)  
+> Granularity: ~1000-char paragraphs **and** ≤80-token sentences
+
+---
+
+## Contents
+
+1. [Dataset structure](#dataset-structure)  
+2. [Download & usage](#quick-start)  
+3. [Creation process](#creation-process)  
+4. [Intended use](#intended-use)  
+5. [Limitations & ethical considerations](#limitations--ethical-considerations)  
+6. [Citation](#citation)  
+7. [License](#license)  
+8. [Contact](#contact)
+
+---
+
+## Dataset structure
+
+The data are stored in Arrow (the native format of 🤗 `datasets`)
+so they can be accessed in-memory or streamed on-the-fly.
+
+| Column        | Type | Description                                                            |
+|---------------|------|------------------------------------------------------------------------|
+| `text`        | str  | Plain-text chunk (paragraph or sentence)                               |
+| `metadata`    | dict | All fields defined in `FilingMetadata` (ticker, cik, filing_type, …)   |
+| `id`          | str  | SHA-1 hash → unique, deterministic identifier                          |
+| `chunk_type`* | str  | Paragraph / sentence / summary / exhibit / press_release               |
+
+*`chunk_type` is embedded inside `metadata`.
+
+Total size: **≈ 200-400 k chunks** (depends on new filings).
+
+### Example metadata object
+
+```json
+{
+  "ticker": "AMZN",
+  "cik": "0001018724",
+  "company_name": "AMAZON.COM, INC.",
+  "filing_type": "10-K",
+  "filing_date": "2025-02-02",
+  "filing_period": "2024-12-31",
+  "filing_url": "https://www.sec.gov/Archives/...",
+  "section_id": "item7",
+  "section_title": "Management’s Discussion and Analysis",
+  "section_level": 1,
+  "chunk_index": 3,
+  "chunk_count": 42,
+  "chunk_type": "paragraph"
+}
+```