{
  "dataset": "iltabid-prediction-vs-actual",
  "description": "일타비드가 나라장터 공사 입찰에 대해 개찰 전 산출한 추천 투찰가와, 개찰 후 확인된 실제 1위 낙찰가를 공고 1건 단위로 대조한 전수 기록.",
  "generated_at": "2026-09-11T15:48:09.994206",
  "row_count": 41173,
  "period": {
    "first_opening_date": "2025-06-16",
    "last_opening_date": "2026-09-11"
  },
  "summary": {
    "scored_total": 41173,
    "win": 4706,
    "win_pct": 11.4,
    "accuracy_excellent": 22175,
    "accuracy_excellent_pct": 53.9,
    "accuracy_good": 6158,
    "accuracy_good_pct": 15.0
  },
  "scoring_rule": {
    "win": "final_min_bid_amount <= predicted_recommended_amount < actual_winning_amount",
    "tie": "predicted_recommended_amount == actual_winning_amount",
    "outcome_basis": "확정 낙찰하한가만 인정. 개찰 전 추정 하한가는 확정 하한가보다 중위 2.8% 낮아, 이 값으로 판정하면 실격될 투찰까지 승으로 집계되어 승 판정 정밀도가 36.9%로 떨어진다(확정·추정이 모두 있는 8천 건 실측).",
    "accuracy_grades": {
      "excellent": "적격 + 오차 1.0% 이내",
      "good": "적격 + 오차 1.0% 초과 ~ 1.4% 이내"
    },
    "denominator": {
      "task_types": [
        "공사"
      ],
      "excluded": [
        "수의시담(발주처가 가격을 직접 협의 — 예측 대상 아님)",
        "확정 예정가격 없는 건",
        "추천 투찰가 없는 건"
      ],
      "selection": "없음. 판정된 전수가 분모.",
      "scored_value": "예측 시점의 추천 투찰가 1개. 후보 10선 중 최선값을 고르지 않음."
    },
    "limitations": [
      "예정가격은 복수예비가격 추첨 결과의 함수이므로 단일값 100% 적중은 불가능하다.",
      "백테스트 채점이며 유료 이용자의 실제 낙찰률이 아니다.",
      "100억 이상·종합심사낙찰제는 캘리브레이션 밖이라 참고치다."
    ],
    "spec_url": "https://ilta.kr/analysis/accuracy/spec/",
    "records_url": "https://ilta.kr/analysis/accuracy/records/",
    "metrics_url": "https://ilta.kr/analysis/accuracy/",
    "license": "조달청 나라장터 공공데이터 기반. 출처 표기 후 자유 인용 가능."
  },
  "columns": [
    {
      "name": "bid_notice_no",
      "description": "나라장터 공고번호"
    },
    {
      "name": "bid_notice_ord",
      "description": "차수"
    },
    {
      "name": "task_type",
      "description": "업무구분 (공사 고정)"
    },
    {
      "name": "opening_date",
      "description": "개찰(낙찰확정)일"
    },
    {
      "name": "demand_institution",
      "description": "수요기관"
    },
    {
      "name": "notice_name",
      "description": "공고명"
    },
    {
      "name": "determined_price",
      "description": "확정 예정가격"
    },
    {
      "name": "final_min_bid_amount",
      "description": "확정 낙찰하한가"
    },
    {
      "name": "predicted_recommended_amount",
      "description": "일타비드 추천 투찰가 (예측 시점)"
    },
    {
      "name": "actual_winning_amount",
      "description": "실제 1위 낙찰가"
    },
    {
      "name": "outcome",
      "description": "판정 (win = 하한 위 + 1위 아래, 그 외 loss)"
    },
    {
      "name": "accuracy_grade",
      "description": "정밀도 등급 (excellent / good / 공란)"
    },
    {
      "name": "error_pct",
      "description": "추천가와 실제 1위 낙찰가의 오차율(%)"
    },
    {
      "name": "url",
      "description": "해당 공고 공개 페이지"
    }
  ],
  "full_csv": "https://ilta.kr/analysis/accuracy/dataset/prediction-vs-actual.csv",
  "sample_note": "아래 sample 은 최근 200건이며, 전수는 full_csv 를 사용하십시오.",
  "sample": [
    {
      "bid_notice_no": "R26BK01717198",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "전북특별자치도 정읍시",
      "notice_name": "4차차선도색및노면표시사업(총액단가)",
      "determined_price": 87202407.0,
      "final_min_bid_amount": 78563213.0,
      "predicted_recommended_amount": 79189461.0,
      "actual_winning_amount": 78565000.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.795,
      "url": "https://ilta.kr/g2b/R26BK01717198-000-4차차선도색및노면표시사업총액단가/"
    },
    {
      "bid_notice_no": "R26BK01717181",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "전북특별자치도 정읍시",
      "notice_name": "칠보면칠보천지방하천관리용도로포장공사",
      "determined_price": 55497294.0,
      "final_min_bid_amount": 49995343.0,
      "predicted_recommended_amount": 49818176.0,
      "actual_winning_amount": 50004000.0,
      "outcome": "loss",
      "accuracy_grade": "",
      "error_pct": 0.372,
      "url": "https://ilta.kr/g2b/R26BK01717181-000-칠보면칠보천지방하천관리용도로포장공사/"
    },
    {
      "bid_notice_no": "R26BK01713699",
      "bid_notice_ord": "001",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "대구광역시 상수도사업본부 고산정수사업소",
      "notice_name": "여과지 여재 보사공사",
      "determined_price": 84384967.0,
      "final_min_bid_amount": 75731288.0,
      "predicted_recommended_amount": 76808206.0,
      "actual_winning_amount": 76241504.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.743,
      "url": "https://ilta.kr/g2b/R26BK01713699-001-여과지-여재-보사공사/"
    },
    {
      "bid_notice_no": "R26BK01715523",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "전남광주통합특별시 영암군",
      "notice_name": "영암 월곡리 느티나무 주변정비 공사",
      "determined_price": 129506705.0,
      "final_min_bid_amount": 116763478.0,
      "predicted_recommended_amount": 117253531.0,
      "actual_winning_amount": 116899612.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.303,
      "url": "https://ilta.kr/g2b/R26BK01715523-000-영암-월곡리-느티나무-주변정비-공사/"
    },
    {
      "bid_notice_no": "R26BK01708092",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "경찰청 전라남도경찰청 목포경찰서",
      "notice_name": "부주파출소 내진보강공사",
      "determined_price": 35313457.0,
      "final_min_bid_amount": 31692061.0,
      "predicted_recommended_amount": 31815778.0,
      "actual_winning_amount": 31961483.0,
      "outcome": "win",
      "accuracy_grade": "excellent",
      "error_pct": 0.456,
      "url": "https://ilta.kr/g2b/R26BK01708092-000-부주파출소-내진보강공사/"
    },
    {
      "bid_notice_no": "R26BK01712513",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "여수광양항만공사",
      "notice_name": "2026년 광양항 임항도로(전기) 유지보수 및 안전신호등 설치공사",
      "determined_price": 78034328.0,
      "final_min_bid_amount": 70471309.0,
      "predicted_recommended_amount": 70669261.0,
      "actual_winning_amount": 70471890.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.28,
      "url": "https://ilta.kr/g2b/R26BK01712513-000-2026년-광양항-임항도로전기-유지보수-및-안전신호등-설치공사/"
    },
    {
      "bid_notice_no": "R26BK01715987",
      "bid_notice_ord": "001",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "경상북도 성주군",
      "notice_name": "초전면 자양리 세천정비공사",
      "determined_price": 75719306.0,
      "final_min_bid_amount": 68399681.0,
      "predicted_recommended_amount": 68759705.0,
      "actual_winning_amount": 68404600.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.519,
      "url": "https://ilta.kr/g2b/R26BK01715987-001-초전면-자양리-세천정비공사/"
    },
    {
      "bid_notice_no": "R26BK01710761",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "전북특별자치도 정읍시 상하수도사업소",
      "notice_name": "송산동 송학마을 하수관로 설치사업",
      "determined_price": 36106365.0,
      "final_min_bid_amount": 32576074.0,
      "predicted_recommended_amount": 32663788.0,
      "actual_winning_amount": 32578744.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.261,
      "url": "https://ilta.kr/g2b/R26BK01710761-000-송산동-송학마을-하수관로-설치사업/"
    },
    {
      "bid_notice_no": "R26BK01711051",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "경상북도 구미시 상하수도사업본부",
      "notice_name": "2026년 지산동 외 9개지역 상수도 긴급 복구공사 단가계약(5차)",
      "determined_price": 95606030.0,
      "final_min_bid_amount": 85801631.0,
      "predicted_recommended_amount": 87272412.0,
      "actual_winning_amount": 86503058.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.889,
      "url": "https://ilta.kr/g2b/R26BK01711051-000-2026년-지산동-외-9개지역-상수도-긴급-복구공사-단가계약5차/"
    },
    {
      "bid_notice_no": "R26BK01711277",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "거제해양관광개발공사",
      "notice_name": "거제시 소각시설 소각로 및 폐열보일러 보수공사",
      "determined_price": 518105444.0,
      "final_min_bid_amount": 468546644.0,
      "predicted_recommended_amount": 463755521.0,
      "actual_winning_amount": 468871820.0,
      "outcome": "loss",
      "accuracy_grade": "",
      "error_pct": 1.091,
      "url": "https://ilta.kr/g2b/R26BK01711277-000-거제시-소각시설-소각로-및-폐열보일러-보수공사/"
    },
    {
      "bid_notice_no": "R26BK01711410",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "한국지역난방공사 고양사업소",
      "notice_name": "고객설비 열에너지 절약시스템 설치 공사",
      "determined_price": 352542923.0,
      "final_min_bid_amount": 317362335.0,
      "predicted_recommended_amount": 319297154.0,
      "actual_winning_amount": 329147390.0,
      "outcome": "win",
      "accuracy_grade": "",
      "error_pct": 2.993,
      "url": "https://ilta.kr/g2b/R26BK01711410-000-고객설비-열에너지-절약시스템-설치-공사/"
    },
    {
      "bid_notice_no": "R26BK01716125",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "부산광역시 부산진구",
      "notice_name": "가야1동 엄광마을 새뜰마을사업 지붕개량공사",
      "determined_price": 95382645.0,
      "final_min_bid_amount": 85601154.0,
      "predicted_recommended_amount": 85927046.0,
      "actual_winning_amount": 85911062.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.019,
      "url": "https://ilta.kr/g2b/R26BK01716125-000-가야1동-엄광마을-새뜰마을사업-지붕개량공사/"
    },
    {
      "bid_notice_no": "R26BK01716575",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "경상북도 안동시",
      "notice_name": "산불피해목 제거사업(일직․길안․임동․예안지구)",
      "determined_price": 39137125.0,
      "final_min_bid_amount": 35166651.0,
      "predicted_recommended_amount": 35467547.0,
      "actual_winning_amount": 35167500.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.853,
      "url": "https://ilta.kr/g2b/R26BK01716575-000-산불피해목-제거사업일직길안임동예안지구/"
    },
    {
      "bid_notice_no": "R26BK01717140",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "경기도 구리시",
      "notice_name": "소액공사 수의계약 견적서 제출안내 공고(2026년 등산로 정비사업)",
      "determined_price": 27144189.0,
      "final_min_bid_amount": 24360552.0,
      "predicted_recommended_amount": 24698472.0,
      "actual_winning_amount": 24503350.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.796,
      "url": "https://ilta.kr/g2b/R26BK01717140-000-소액공사-수의계약-견적서-제출안내-공고2026년-등산로-정비사업/"
    },
    {
      "bid_notice_no": "R26BK01714721",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "전남광주통합특별시 광주청사",
      "notice_name": "광주교통정보센터 시설개선 정비 건축공사",
      "determined_price": 39503827.0,
      "final_min_bid_amount": 35626814.0,
      "predicted_recommended_amount": 35776890.0,
      "actual_winning_amount": 35629190.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.415,
      "url": "https://ilta.kr/g2b/R26BK01714721-000-광주교통정보센터-시설개선-정비-건축공사/"
    },
    {
      "bid_notice_no": "R26BK01716635",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "경상북도 안동시",
      "notice_name": "2026년 가로수보호판 정비사업",
      "determined_price": 63473870.0,
      "final_min_bid_amount": 57235505.0,
      "predicted_recommended_amount": 57113103.0,
      "actual_winning_amount": 57243630.0,
      "outcome": "loss",
      "accuracy_grade": "",
      "error_pct": 0.228,
      "url": "https://ilta.kr/g2b/R26BK01716635-000-2026년-가로수보호판-정비사업/"
    },
    {
      "bid_notice_no": "R26BK01716545",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "경상북도 안동시",
      "notice_name": "금소생태공원 은행나무 이식공사",
      "determined_price": 60556470.0,
      "final_min_bid_amount": 54623360.0,
      "predicted_recommended_amount": 55068721.0,
      "actual_winning_amount": 54631520.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.8,
      "url": "https://ilta.kr/g2b/R26BK01716545-000-금소생태공원-은행나무-이식공사/"
    },
    {
      "bid_notice_no": "R26BK01717335",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "경상남도 통영시",
      "notice_name": "통영수영장 냉각기 설치공사(전기)",
      "determined_price": 62903979.0,
      "final_min_bid_amount": 56682545.0,
      "predicted_recommended_amount": 5523688.0,
      "actual_winning_amount": 56683980.0,
      "outcome": "loss",
      "accuracy_grade": "",
      "error_pct": 90.255,
      "url": "https://ilta.kr/g2b/R26BK01717335-000-통영수영장-냉각기-설치공사전기/"
    },
    {
      "bid_notice_no": "R26BK01715121",
      "bid_notice_ord": "000",
      "task_type": "공사",
      "opening_date": "2026-09-11",
      "demand_institution": "충청북도 음성군 수도사업소",
      "notice_name": "[소액수의견적] 감곡면 문촌리 노후관로 교체공사",
      "determined_price": 161583147.0,
      "final_min_bid_amount": 145012795.0,
      "predicted_recommended_amount": 146625271.0,
      "actual_winning_amount": 146026000.0,
      "outcome": "loss",
      "accuracy_grade": "excellent",
      "error_pct": 0.41,
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