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Upgrade ensemble to word+char TF-IDF: line-item 0.686->0.702, section 0.613->0.620 (weights chosen on val)
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{
"weight": 0.25,
"config": "word 1-2 (100k) + char_wb 3-5 (150k), SGD alpha 2e-6",
"features": 190130,
"val": {
"n": 11598,
"top1": 0.5875150888084153,
"top3": 0.7515088808415245,
"division": 0.6892567684083463
},
"line_items": {
"n": 194,
"top1": 0.7015706806282722,
"top3": 0.8219895287958116,
"division": 0.8195876288659794
},
"manuals": {
"n": 6890,
"top1": 0.3301983835415136,
"top3": 0.4981631153563556,
"division": 0.5132075471698113
},
"manual_sections": {
"sections": 153,
"top1": 0.62,
"division": 0.803921568627451
}
}