{
 "benchmark": "Sheetly OMR benchmark",
 "metric": "strict F1 (pitch + onset + duration all correct)",
 "runs": {
  "sheetly": {
   "date": "2026-08-22",
   "build": "production recognition pipeline, August 2026",
   "configuration": "LLM and vision passes disabled, so runs are deterministic. Those passes read title metadata and guess the instrument; they do not read notes."
  },
  "audiveris": {
   "date": "2026-07-15",
   "version": "5.11.0",
   "olimpic_note": "same 60 systems, same scorer"
  },
  "oemer": {
   "date": "2026-07-15",
   "version": "0.1.x"
  }
 },
 "note": "Competitor versions are pinned and unchanged since their run. Inputs were byte-identical on the clean suite; on the photographed suite the competitor runner was staged with page one of each piece only, which is why every published figure scores page one for every engine.",
 "suites": {
  "clean31": [
   {
    "slug": "repeats-melody",
    "description": "monophonic melody with ||: :|| and 1st/2nd endings",
    "gt_notes": 103,
    "sheetly": 1.0,
    "audiveris": 0.975,
    "oemer": 0.748,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 1.0,
     "omr_notes": 103
    },
    "audiveris_detail": {
     "strict_precision": 1.0,
     "strict_recall": 0.951,
     "note_f1": 0.975,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.938,
     "omr_notes": 98
    },
    "oemer_detail": {
     "strict_precision": 0.748,
     "strict_recall": 0.748,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.125,
     "omr_notes": 103
    }
   },
   {
    "slug": "fiddle-strathspey",
    "description": "fiddle tune with repeat barlines",
    "gt_notes": 192,
    "sheetly": 0.927,
    "audiveris": 0.822,
    "oemer": 0.611,
    "sheetly_detail": {
     "strict_precision": 0.927,
     "strict_recall": 0.927,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.889,
     "omr_notes": 192
    },
    "audiveris_detail": {
     "strict_precision": 0.826,
     "strict_recall": 0.818,
     "note_f1": 0.984,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.778,
     "omr_notes": 190
    },
    "oemer_detail": {
     "strict_precision": 0.608,
     "strict_recall": 0.615,
     "note_f1": 0.995,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.37,
     "omr_notes": 194
    }
   },
   {
    "slug": "bach-bwv66.6",
    "description": "4-voice chorale (4 staves/system)",
    "gt_notes": 165,
    "sheetly": 1.0,
    "audiveris": 1.0,
    "oemer": null,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 1.0,
     "omr_notes": 165
    },
    "audiveris_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 1.0,
     "omr_notes": 165
    }
   },
   {
    "slug": "joplin-maple-leaf",
    "description": "two-hand ragtime piano (advanced)",
    "gt_notes": 518,
    "sheetly": 1.0,
    "audiveris": 0.92,
    "oemer": 0.723,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 1.0,
     "omr_notes": 518
    },
    "audiveris_detail": {
     "strict_precision": 0.919,
     "strict_recall": 0.921,
     "note_f1": 0.939,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.724,
     "omr_notes": 519
    },
    "oemer_detail": {
     "strict_precision": 0.725,
     "strict_recall": 0.722,
     "note_f1": 0.944,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.207,
     "omr_notes": 516
    }
   },
   {
    "slug": "schoenberg-op19-2",
    "description": "atonal piano \u2014 accidentals everywhere (extreme)",
    "gt_notes": 102,
    "sheetly": 1.0,
    "audiveris": 0.752,
    "oemer": 0.529,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 1.0,
     "omr_notes": 102
    },
    "audiveris_detail": {
     "strict_precision": 0.76,
     "strict_recall": 0.745,
     "note_f1": 0.752,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.556,
     "omr_notes": 100
    },
    "oemer_detail": {
     "strict_precision": 0.529,
     "strict_recall": 0.529,
     "note_f1": 0.706,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.111,
     "omr_notes": 102
    }
   },
   {
    "slug": "beethoven-grosse-fuge",
    "description": "Grosse Fuge string quartet \u2014 dense 4-part (extreme)",
    "gt_notes": 174,
    "sheetly": 1.0,
    "audiveris": 0.945,
    "oemer": null,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 1.0,
     "omr_notes": 174
    },
    "audiveris_detail": {
     "strict_precision": 0.953,
     "strict_recall": 0.937,
     "note_f1": 0.968,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.913,
     "omr_notes": 171
    }
   },
   {
    "slug": "mozart-k155-2",
    "description": "quartet slow mvt \u2014 triplets + graces",
    "gt_notes": 258,
    "sheetly": 1.0,
    "audiveris": 0.922,
    "oemer": null,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 1.0,
     "omr_notes": 258
    },
    "audiveris_detail": {
     "strict_precision": 0.926,
     "strict_recall": 0.919,
     "note_f1": 0.957,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.769,
     "omr_notes": 256
    }
   },
   {
    "slug": "mozart-k458-1",
    "description": "Hunt quartet opener \u2014 6/8 with pickup",
    "gt_notes": 257,
    "sheetly": 1.0,
    "audiveris": 0.996,
    "oemer": null,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 1.0,
     "omr_notes": 257
    },
    "audiveris_detail": {
     "strict_precision": 1.0,
     "strict_recall": 0.992,
     "note_f1": 0.996,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.882,
     "omr_notes": 255
    }
   },
   {
    "slug": "beethoven-op18n1-1",
    "description": "long sonata-form quartet mvt",
    "gt_notes": 215,
    "sheetly": 0.953,
    "audiveris": 0.943,
    "oemer": null,
    "sheetly_detail": {
     "strict_precision": 0.958,
     "strict_recall": 0.949,
     "note_f1": 0.981,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.95,
     "omr_notes": 213
    },
    "audiveris_detail": {
     "strict_precision": 0.957,
     "strict_recall": 0.93,
     "note_f1": 0.958,
     "staff_acc": 0.995,
     "spell_acc": 1.0,
     "measure_exact": 0.85,
     "omr_notes": 209
    }
   },
   {
    "slug": "haydn-op74n1-1",
    "description": "classical quartet allegro",
    "gt_notes": 198,
    "sheetly": 1.0,
    "audiveris": 0.964,
    "oemer": null,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 1.0,
     "omr_notes": 198
    },
    "audiveris_detail": {
     "strict_precision": 0.979,
     "strict_recall": 0.949,
     "note_f1": 0.974,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.714,
     "omr_notes": 192
    }
   },
   {
    "slug": "chopin-mazurka06-2",
    "description": "mazurka \u2014 ornamented romantic piano",
    "gt_notes": 359,
    "sheetly": 0.911,
    "audiveris": 0.966,
    "oemer": 0.497,
    "sheetly_detail": {
     "strict_precision": 0.911,
     "strict_recall": 0.911,
     "note_f1": 0.947,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.583,
     "omr_notes": 359
    },
    "audiveris_detail": {
     "strict_precision": 0.975,
     "strict_recall": 0.958,
     "note_f1": 0.978,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.861,
     "omr_notes": 353
    },
    "oemer_detail": {
     "strict_precision": 0.497,
     "strict_recall": 0.496,
     "note_f1": 0.591,
     "staff_acc": 0.096,
     "spell_acc": 1.0,
     "measure_exact": 0.0,
     "omr_notes": 358
    }
   },
   {
    "slug": "schubert-lindenbaum",
    "description": "lied \u2014 triplet accompaniment, key change, lyrics",
    "gt_notes": 342,
    "sheetly": 1.0,
    "audiveris": 0.98,
    "oemer": 0.486,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.611,
     "omr_notes": 342
    },
    "audiveris_detail": {
     "strict_precision": 0.98,
     "strict_recall": 0.98,
     "note_f1": 1.0,
     "staff_acc": 0.994,
     "spell_acc": 1.0,
     "measure_exact": 0.5,
     "omr_notes": 342
    },
    "oemer_detail": {
     "strict_precision": 0.487,
     "strict_recall": 0.485,
     "note_f1": 0.843,
     "staff_acc": 0.361,
     "spell_acc": 1.0,
     "measure_exact": 0.0,
     "omr_notes": 341
    }
   },
   {
    "slug": "schumann-dichterliebe-2",
    "description": "lied with pickup + lyrics",
    "gt_notes": 254,
    "sheetly": 0.958,
    "audiveris": 0.759,
    "oemer": 0.443,
    "sheetly_detail": {
     "strict_precision": 0.979,
     "strict_recall": 0.937,
     "note_f1": 0.978,
     "staff_acc": 0.992,
     "spell_acc": 1.0,
     "measure_exact": 0.556,
     "omr_notes": 243
    },
    "audiveris_detail": {
     "strict_precision": 0.828,
     "strict_recall": 0.701,
     "note_f1": 0.844,
     "staff_acc": 0.972,
     "spell_acc": 1.0,
     "measure_exact": 0.556,
     "omr_notes": 215
    },
    "oemer_detail": {
     "strict_precision": 0.453,
     "strict_recall": 0.433,
     "note_f1": 0.696,
     "staff_acc": 0.409,
     "spell_acc": 1.0,
     "measure_exact": 0.0,
     "omr_notes": 243
    }
   },
   {
    "slug": "schumann-op41n1-3",
    "description": "quartet mvt in cut time w/ meter change",
    "gt_notes": 151,
    "sheetly": 0.98,
    "audiveris": 0.99,
    "oemer": null,
    "sheetly_detail": {
     "strict_precision": 0.98,
     "strict_recall": 0.98,
     "note_f1": 0.98,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.824,
     "omr_notes": 151
    },
    "audiveris_detail": {
     "strict_precision": 0.993,
     "strict_recall": 0.987,
     "note_f1": 0.99,
     "staff_acc": 0.993,
     "spell_acc": 1.0,
     "measure_exact": 0.882,
     "omr_notes": 150
    }
   },
   {
    "slug": "clara-polonaise-op1n1",
    "description": "romantic piano polonaise w/ key change",
    "gt_notes": 508,
    "sheetly": 0.911,
    "audiveris": 0.726,
    "oemer": 0.436,
    "sheetly_detail": {
     "strict_precision": 0.915,
     "strict_recall": 0.907,
     "note_f1": 0.947,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.739,
     "omr_notes": 504
    },
    "audiveris_detail": {
     "strict_precision": 0.727,
     "strict_recall": 0.724,
     "note_f1": 0.832,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.565,
     "omr_notes": 506
    },
    "oemer_detail": {
     "strict_precision": 0.438,
     "strict_recall": 0.435,
     "note_f1": 0.9,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.174,
     "omr_notes": 505
    }
   },
   {
    "slug": "clara-op17-3",
    "description": "piano trio mvt in 6/8",
    "gt_notes": 276,
    "sheetly": 0.926,
    "audiveris": 0.731,
    "oemer": 0.241,
    "sheetly_detail": {
     "strict_precision": 0.927,
     "strict_recall": 0.924,
     "note_f1": 0.966,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.786,
     "omr_notes": 275
    },
    "audiveris_detail": {
     "strict_precision": 0.766,
     "strict_recall": 0.699,
     "note_f1": 0.837,
     "staff_acc": 0.073,
     "spell_acc": 1.0,
     "measure_exact": 0.5,
     "omr_notes": 252
    },
    "oemer_detail": {
     "strict_precision": 0.244,
     "strict_recall": 0.239,
     "note_f1": 0.768,
     "staff_acc": 0.015,
     "spell_acc": 0.985,
     "measure_exact": 0.062,
     "omr_notes": 271
    }
   },
   {
    "slug": "weber-concertino",
    "description": "clarinet concertino \u2014 3 meters, 2 keys, runs",
    "gt_notes": 337,
    "sheetly": 0.994,
    "audiveris": 0.936,
    "oemer": 0.521,
    "sheetly_detail": {
     "strict_precision": 0.994,
     "strict_recall": 0.994,
     "note_f1": 0.994,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.85,
     "omr_notes": 337
    },
    "audiveris_detail": {
     "strict_precision": 0.935,
     "strict_recall": 0.938,
     "note_f1": 0.978,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.7,
     "omr_notes": 338
    },
    "oemer_detail": {
     "strict_precision": 0.536,
     "strict_recall": 0.507,
     "note_f1": 0.723,
     "staff_acc": 0.409,
     "spell_acc": 1.0,
     "measure_exact": 0.0,
     "omr_notes": 319
    }
   },
   {
    "slug": "verdi-la-donna",
    "description": "aria in 3/8 with lyrics",
    "gt_notes": 370,
    "sheetly": 0.996,
    "audiveris": 0.814,
    "oemer": null,
    "sheetly_detail": {
     "strict_precision": 0.995,
     "strict_recall": 0.997,
     "note_f1": 0.996,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.971,
     "omr_notes": 371
    },
    "audiveris_detail": {
     "strict_precision": 0.814,
     "strict_recall": 0.814,
     "note_f1": 0.968,
     "staff_acc": 0.223,
     "spell_acc": 1.0,
     "measure_exact": 0.686,
     "omr_notes": 370
    }
   },
   {
    "slug": "cpebach-h186",
    "description": "galant keyboard piece",
    "gt_notes": 300,
    "sheetly": 0.84,
    "audiveris": 0.894,
    "oemer": 0.397,
    "sheetly_detail": {
     "strict_precision": 0.84,
     "strict_recall": 0.84,
     "note_f1": 0.98,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.5,
     "omr_notes": 300
    },
    "audiveris_detail": {
     "strict_precision": 0.904,
     "strict_recall": 0.883,
     "note_f1": 0.948,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.5,
     "omr_notes": 293
    },
    "oemer_detail": {
     "strict_precision": 0.395,
     "strict_recall": 0.4,
     "note_f1": 0.821,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.167,
     "omr_notes": 304
    }
   },
   {
    "slug": "beach-prayer",
    "description": "choral + piano \u2014 lyrics everywhere",
    "gt_notes": 263,
    "sheetly": 0.902,
    "audiveris": 0.941,
    "oemer": 0.127,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 0.821,
     "note_f1": 0.902,
     "staff_acc": 0.861,
     "spell_acc": 1.0,
     "measure_exact": 0.0,
     "omr_notes": 216
    },
    "audiveris_detail": {
     "strict_precision": 0.939,
     "strict_recall": 0.943,
     "note_f1": 0.975,
     "staff_acc": 0.992,
     "spell_acc": 1.0,
     "measure_exact": 0.429,
     "omr_notes": 264
    },
    "oemer_detail": {
     "strict_precision": 0.138,
     "strict_recall": 0.118,
     "note_f1": 0.422,
     "staff_acc": 0.0,
     "spell_acc": 1.0,
     "measure_exact": 0.0,
     "omr_notes": 225
    }
   },
   {
    "slug": "handel-lascia",
    "description": "aria \u2014 meter + key change, lyrics",
    "gt_notes": 175,
    "sheetly": 0.974,
    "audiveris": 0.959,
    "oemer": 0.529,
    "sheetly_detail": {
     "strict_precision": 0.977,
     "strict_recall": 0.971,
     "note_f1": 0.991,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.938,
     "omr_notes": 174
    },
    "audiveris_detail": {
     "strict_precision": 0.982,
     "strict_recall": 0.937,
     "note_f1": 0.971,
     "staff_acc": 0.994,
     "spell_acc": 1.0,
     "measure_exact": 0.688,
     "omr_notes": 167
    },
    "oemer_detail": {
     "strict_precision": 0.532,
     "strict_recall": 0.526,
     "note_f1": 0.736,
     "staff_acc": 0.228,
     "spell_acc": 1.0,
     "measure_exact": 0.0,
     "omr_notes": 173
    }
   },
   {
    "slug": "luca-gloria",
    "description": "medieval gloria \u2014 3 meter changes",
    "gt_notes": 231,
    "sheetly": 0.983,
    "audiveris": 0.961,
    "oemer": 0.357,
    "sheetly_detail": {
     "strict_precision": 0.983,
     "strict_recall": 0.983,
     "note_f1": 0.983,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
     "measure_exact": 0.912,
     "omr_notes": 231
    },
    "audiveris_detail": {
     "strict_precision": 0.961,
     "strict_recall": 0.961,
     "note_f1": 0.974,
     "staff_acc": 0.991,
     "spell_acc": 1.0,
     "measure_exact": 0.853,
     "omr_notes": 231
    },
    "oemer_detail": {
     "strict_precision": 0.355,
     "strict_recall": 0.359,
     "note_f1": 0.387,
     "staff_acc": 0.964,
     "spell_acc": 1.0,
     "measure_exact": 0.0,
     "omr_notes": 234
    }
   },
   {
    "slug": "aloha-oe",
    "description": "song with pickup, many staves",
    "gt_notes": 115,
    "sheetly": 1.0,
    "audiveris": 1.0,
    "oemer": 0.47,
    "sheetly_detail": {
     "strict_precision": 1.0,
     "strict_recall": 1.0,
     "note_f1": 1.0,
     "staff_acc": 1.0,
     "spell_acc": 1.0,
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   },
   {
    "sample": "6569855/p1-s1",
    "gt_notes": 65,
    "sheetly": 0.985,
    "audiveris": 0.869
   },
   {
    "sample": "6569865/p1-s1",
    "gt_notes": 60,
    "sheetly": 0.783,
    "audiveris": 0.983
   }
  ],
  "olimpic60_note": "audiveris = null means Audiveris produced no parseable transcription for that system; it is counted as zero in the mean, not dropped."
 },
 "scoring": "page one of each piece \u2014 the pages every engine received. The photographed suite was staged to the competitor runner as page one per piece, so scoring later pages would charge Audiveris and oemer for ground truth they were never shown. score.py --all-pages reproduces the earlier multi-page figures.",
 "metric_scope": "scored: pitch, onset and duration of pitched notes. NOT scored: rests, staff/hand assignment, enharmonic spelling, clefs, key and time signatures, repeats, slurs, articulations, dynamics, lyrics.",
 "headline": {
  "clean31": {
   "sheetly": 0.9644,
   "audiveris": 0.8843,
   "oemer": 0.3845
  },
  "photo31": {
   "sheetly": 0.9528,
   "audiveris": 0.5043,
   "oemer": 0.0981
  },
  "olimpic60": {
   "sheetly_mean": 0.9029,
   "sheetly_median": 0.9915,
   "sheetly_usable": "60/60",
   "audiveris_mean": 0.5764,
   "audiveris_median": 0.644,
   "audiveris_usable": "50/60"
  }
 },
 "olimpic60_medians": {
  "sheetly": 0.9915,
  "audiveris_over_60_nulls_zero": 0.644,
  "audiveris_over_50_transcribed": 0.744
 },
 "detail_note": "<engine>_detail carries the scorer's secondary measures for that engine on that piece: staff_acc (hand/staff assignment over strict-matched notes), spell_acc (enharmonic spelling), measure_exact (fraction of bars matching exactly), plus pitch-only note_f1 and the strict precision/recall the headline F1 combines."
}