{
  "dataset": {
    "dataset": "Wireless headphone reviews from Amazon Reviews 2023",
    "created_at": "2026-10-27T09:28:48.291126+00:00",
    "source_repository": "McAuley-Lab/Amazon-Reviews-2023",
    "source_revision": "2b6d039ed471f2ba5fd2acb718bf33b0a7e5598e",
    "source_review_file": {
      "type": "file",
      "oid": "3c65807961381bdd0ef1ac3d54330da7186bd3e2",
      "size": 22616233652,
      "lfs": {
        "oid": "bf11cf9c94c23ead7d3ffb174d18231fad8fcd76e72ad167f538a5599a38de8e",
        "size": 22616233652,
        "pointerSize": 136
      },
      "xetHash": "28866377eb7aec134fa8b5028e64a9d5de9960a671ef0babc5e0e177e1a96bc1",
      "path": "raw/review_categories/Electronics.jsonl"
    },
    "sampling_method": "Seeded nonoverlapping 8 MiB byte windows across Electronics.jsonl. Read complete interior records, join metadata-selected headphone products, deduplicate identical review text; stop after complete eight-window batch reaches target; seeded random 30k selection from that eligible pool. Convenience sample, not uniform across all reviews or representative of customers.",
    "sampling_seed": 42,
    "sample_size": 30000,
    "windows_read": 56,
    "source_reviews_scanned": 916680,
    "eligible_unique_reviews_in_windows": 31305,
    "source_bytes_read": 469762048,
    "sample_products": 4654,
    "rating_distribution": {
      "1": 3915,
      "2": 2311,
      "3": 2588,
      "4": 4109,
      "5": 17077
    },
    "store_distribution": {
      "TOZO": 3726,
      "Sony": 2710,
      "Soundcore": 913,
      "Senso": 758,
      "SoundPEATS": 700,
      "Amazon Renewed": 576,
      "Bose": 574,
      "Skullcandy": 562,
      "SAMSUNG": 505,
      "JBL": 487,
      "Jaybird": 432,
      "JLab": 402,
      "phaiser": 326,
      "Jabra": 311,
      "Avantree": 311,
      "Anker": 302,
      "Tribit": 302,
      "iJoy": 294,
      "Sennheiser Consumer Audio": 290,
      "Aftershokz": 274,
      "Otium": 259,
      "TREBLAB": 256,
      "Plantronics": 248,
      "occiam": 242,
      "Bluedio": 206,
      "TRANYA": 197,
      "TAGRY": 196,
      "EarFun": 172,
      "OIEILI": 171,
      "LASUNEY": 150
    },
    "date_min": "2002-07-08T14:08:01+00:00",
    "date_max": "2023-09-11T16:00:10.124000+00:00",
    "records_sha256": "96e9b3e02a6041757d124571b233273bf54207ca7e02bd4354bde8ab7f3f4fbb",
    "records_gzip_sha256": "ac623412e1eb932e9ec8151ab4939a261642cbefdbb01d92934433a145157941",
    "model": "sentence-transformers/all-MiniLM-L6-v2",
    "model_revision": "1110a243fdf4706b3f48f1d95db1a4f5529b4d41",
    "dimensions": 384,
    "distance": "Cosine",
    "vector_field": "body",
    "text_field": "text",
    "collection": "headphone_reviews_30k_minilm",
    "qdrant_url": "http://localhost:6333",
    "limitations": [
      "Review frequencies are not defect incidence or return rates.",
      "No customer revenue, warranty cost, confirmed return or subsequent churn data.",
      "Product-title/category filtering is heuristic; audit representative products.",
      "Review text is user-reported, and not independently verified.",
      "Embedding model truncates long reviews at its native token limit; full text is retained."
    ],
    "embedding_device": "mps",
    "embedding_max_tokens": 256,
    "indexed_records": 30000,
    "indexed_at": "2026-10-27T09:35:17.651489+00:00",
    "derived_collections": [
      {
        "collection": "headphone_reviews_critical_minilm",
        "count": 8814,
        "filter": "rating <= 3",
        "records_sha256": "15dc13784d3d76c1916f1344dbde79deb97ea54d3f1f2c51b6c075f5580c161f"
      }
    ]
  },
  "featured_product": {
    "parent_asin": "B07G7VT8KQ",
    "title": "Sony WH1000XM3 Noise Cancelling Headphones, Wireless Bluetooth Over the Ear Headset \u2013 Black (2018 Version)",
    "reviews_in_sample": 1960,
    "sample_average_rating": 4.093,
    "ratings": {
      "5": 1239,
      "4": 229,
      "2": 124,
      "3": 148,
      "1": 220
    }
  },
  "full_selection": {
    "records": 8814,
    "clusters": 5,
    "unassigned": 4547,
    "job_id": "job_ae1f2f844f214a69bd050dd758470744"
  },
  "water_use_group": {
    "id": 2,
    "count": 49,
    "product_count": 42,
    "ratings": {
      "1": 26,
      "2": 18,
      "3": 5
    },
    "terms": ["swimming", "water", "waterproof", "sweat", "proof", "sweatproof"]
  },
  "tested_searches": [
    {
      "query": "headphones will not charge",
      "matches": 1747
    },
    {
      "query": "Bluetooth headphones keep disconnecting",
      "matches": 1894
    },
    {
      "query": "headphones microphone poor call quality",
      "matches": 1915
    },
    {
      "query": "headphones charging case problems",
      "matches": 1299
    }
  ]
}