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        "Content-Type": "application/octet-stream",
        "Content-Length": "302444881",
        "Content-MD5": "jtqmvdfjYFzSOdsCNyAzKg=="
      },
      "warnings": [
        "Content-MD5 jtqmvdfjYFzSOdsCNyAzKg== does not match the bytes (MD5 xarLRlpA+rvqG5XTNTknUA==); two downloads gave the same SHA-256, so the header is taken to be stale"
      ]
    }
  ],
  "pipeline": {
    "tool": "netscied",
    "version": "0.1.0",
    "python": "3.14.10",
    "libraries": {
      "networkx": "3.7",
      "xgi": "0.10.2",
      "frictionless": "5.21.0",
      "jsonschema": "4.26.0",
      "pyyaml": "6.0.3"
    },
    "lock_sha256": "f18b9e94750ef187372bfd0a5d398bc82b10dbcbb9bbc8d0487fc6f41a060078",
    "commit": "a3bf4e758c94a46829da817f476043b5edffa35b"
  },
  "operations": [
    "convert",
    "clean",
    "aggregate"
  ],
  "transformations": [
    {
      "zh-Hant": "依（月份，進站，出站）加總原始資料逐日逐時的「人次」，每個月份是一張快照；連結的 month 欄為 YYYY-MM，trips 欄為當月人次。",
      "en": "The source's daily hourly 人次 counts are summed per (month, entry station, exit station); each month is one snapshot, with month as YYYY-MM and trips as the month's count."
    },
    {
      "zh-Hant": "當月加總為 0 的起訖配對不列出。",
      "en": "Pairs whose monthly sum is 0 are not listed."
    },
    {
      "zh-Hant": "月份依原始檔：檔案中下個月 1 日凌晨 6 時前的列（例如跨年夜通宵營運）計入該檔的月份；下個月的檔案不重複這些時段。",
      "en": "Months follow the source files: rows dated the first day of the next month before 06:00 (for example the New Year's Eve all-night service) count for the file's month; the next month's file does not repeat those hours."
    },
    {
      "zh-Hant": "出站欄的「G大坪林」「O景安」「O頭前庄」併入進站欄的「大坪林」「景安」「頭前庄」：前者只出現在出站欄、後者只出現在進站欄，且兩邊的月人次相近。其他站名照原始資料保留。",
      "en": "The exit names G大坪林, O景安 and O頭前庄 are merged into the entry names 大坪林, 景安 and 頭前庄: each appears on one side only, and their monthly volumes match. Other station names are kept as the source gives them."
    },
    {
      "zh-Hant": "環狀線其他車站（例如十四張、Y板橋）只出現在進站欄：在這些車站出站的旅次不在原始資料中，這些節點只有出邊（節點屬性 appears_as）。",
      "en": "The other Circular Line stations (for example 十四張, Y板橋) appear only as entries; trips exiting there are not in the source, so these nodes have only outgoing edges (node attribute appears_as)."
    }
  ],
  "statistics": {
    "graph": {
      "nodes": 120,
      "edges": 153586,
      "unique_pairs": 12998,
      "repeated_pairs": 140588,
      "self_loops": 1298,
      "isolated_nodes": 0,
      "components": 1,
      "largest_component_nodes": 120,
      "total_weight": 773307913
    }
  },
  "changelog": {
    "zh-Hant": "第一版：2025 年 10 月至 2026 年 9 月共 12 個月的站間起訖月彙總網絡。120 個車站名稱照原始資料保留；11 個只出現在進站欄，0 個只出現在出站欄（節點屬性 appears_as）。2025-12 的檔案含 2026-01-01 凌晨（6 時前）的通宵營運旅次 112,999 人次，依原始檔計入 2025-12。共 12 個月份快照：每個起訖配對在每個快照中最多一條連結，跨快照的配對共 12,998 組，同一快照內沒有重複的配對。含 1,298 條自環（起點與終點相同）。",
    "en": "First version, monthly station-to-station OD networks for the 12 months from October 2025 to September 2026. 120 station names are kept as the source gives them; 11 appear only as entries and 0 only as exits (node attribute appears_as). The 2025-12 file carries 112,999 trips from 2026-01-01 before 06:00 (all-night service); they count for 2025-12, as the source files them. 12 monthly snapshots: a pair has at most one link per snapshot, 12,998 distinct pairs across snapshots; no pair repeats within a snapshot. Self-loops (source equals target): 1,298."
  },
  "citation": "臺北大眾捷運股份有限公司（2026）。臺北捷運站間起訖運量（月彙總）（版本 1.0.0）［資料集］。台灣網絡科學教育。https://netscied.tw/datasets/taipei-metro-od-monthly/#v1.0.0"
}