| Category Precision Recall F1-Score Support | |
| Acids and salts, etc 0.83 0.5 0.62 161 | |
| Acids, alkalis, etc 0.84 0.57 0.68 386 | |
| Advertising 0.83 0.46 0.59 120 | |
| Aeronautics 1.0 0.53 0.69 40 | |
| Agricultural appliances, farmyard 0.87 0.53 0.66 161 | |
| Agricultural appliances, for treatment of land, etc. 0.92 0.8 0.86 428 | |
| Air and gas engines 0.86 0.55 0.67 159 | |
| Air and gases, compressing, etc 0.65 0.26 0.38 257 | |
| Ammunition 0.9 0.77 0.83 268 | |
| Animal powered engines 0.76 0.35 0.48 155 | |
| Artists' instruments 0.71 0.2 0.31 50 | |
| Bearings, etc. 0.89 0.37 0.52 270 | |
| Bells, etc 0.72 0.31 0.44 67 | |
| Beverages 0.86 0.64 0.73 140 | |
| Bleaching, etc. 0.79 0.59 0.68 272 | |
| Books 0.83 0.42 0.56 119 | |
| Boots, etc 0.93 0.8 0.86 203 | |
| Boxes, etc 0.78 0.41 0.54 167 | |
| Brushing, etc 0.88 0.61 0.72 85 | |
| Buildings 0.8 0.54 0.65 457 | |
| Casks 0.89 0.59 0.71 132 | |
| Cements 0.72 0.42 0.53 213 | |
| Centrifugal drying 1.0 0.4 0.58 47 | |
| Chains 0.85 0.45 0.59 65 | |
| Chimneys 0.9 0.45 0.6 100 | |
| Closets 0.81 0.74 0.78 196 | |
| Coin-feed apparatus 0.0 0.0 0.0 1 | |
| Cooking, etc 0.79 0.5 0.61 163 | |
| Cooling 0.87 0.61 0.72 163 | |
| Cutlery 0.86 0.78 0.82 92 | |
| Cutting 0.58 0.34 0.43 206 | |
| Distilling 0.61 0.55 0.58 185 | |
| Drains 0.7 0.58 0.63 102 | |
| Drying 0.78 0.4 0.53 242 | |
| Dynamo electric generators 0.89 0.49 0.63 160 | |
| Electric lamps 0.86 0.87 0.87 111 | |
| Electric telegraphs 0.96 0.8 0.87 175 | |
| Electricity conducting 0.88 0.65 0.75 189 | |
| Electricity measuring 0.86 0.53 0.66 45 | |
| Electricity regulating 0.69 0.29 0.41 145 | |
| Electrolysis 0.88 0.24 0.37 59 | |
| Fabrics, dressing 0.73 0.6 0.66 304 | |
| Fastenings, dress 0.89 0.75 0.81 252 | |
| Fastenings, lock 0.94 0.65 0.77 303 | |
| Fencing 1.0 0.45 0.62 75 | |
| Filtering 0.69 0.53 0.6 146 | |
| Fire extinction 0.89 0.51 0.64 172 | |
| Fish 1.0 0.61 0.76 36 | |
| Food 0.93 0.57 0.7 99 | |
| Fuel, manufacture 0.92 0.63 0.75 210 | |
| Furnaces 0.75 0.66 0.7 915 | |
| Furniture 0.85 0.64 0.73 489 | |
| Galvanic batteries 0.85 0.68 0.75 108 | |
| Gas distribution 0.88 0.62 0.73 135 | |
| Gas manufacture 0.8 0.62 0.7 263 | |
| Glass 0.79 0.45 0.57 73 | |
| Governors 0.93 0.48 0.64 143 | |
| Grain 0.82 0.6 0.69 165 | |
| Grinding and crushing 0.78 0.62 0.69 231 | |
| Grinding or abrading 0.7 0.39 0.5 145 | |
| Hand tools 0.69 0.47 0.56 167 | |
| Harness 0.87 0.67 0.76 148 | |
| Hats 0.9 0.73 0.8 118 | |
| Heating 0.71 0.43 0.53 295 | |
| Hinges 0.75 0.4 0.52 119 | |
| Hollow-ware 0.79 0.35 0.49 125 | |
| Horse-shoes 0.96 0.89 0.92 62 | |
| Hydraulic engineering 0.82 0.59 0.69 199 | |
| Hydraulic machinery 0.61 0.34 0.43 270 | |
| India-rubber 0.68 0.32 0.43 188 | |
| Injectors 0.77 0.2 0.32 84 | |
| Iron 0.78 0.68 0.73 364 | |
| Labels 0.82 0.47 0.6 38 | |
| Lace-making 0.85 0.68 0.75 170 | |
| Lamps 0.94 0.77 0.85 394 | |
| Leather 0.89 0.63 0.74 142 | |
| Life-saving 0.62 0.63 0.62 38 | |
| Lifting 0.82 0.51 0.63 313 | |
| Locomotives 0.81 0.52 0.64 247 | |
| Mechanism 0.79 0.34 0.48 417 | |
| Medicine 0.8 0.61 0.69 253 | |
| Metals and alloys 0.78 0.52 0.62 343 | |
| Metals, Cutting, etc 0.82 0.63 0.71 1030 | |
| Milking 1.0 0.8 0.89 66 | |
| Mining 0.87 0.58 0.7 137 | |
| Mixing 0.84 0.49 0.61 105 | |
| Moulding 0.85 0.55 0.67 429 | |
| Music 0.96 0.9 0.93 143 | |
| Nails 0.82 0.58 0.68 228 | |
| Non-metallic elements 0.71 0.43 0.53 140 | |
| Oils 0.85 0.67 0.75 262 | |
| Ordnance 0.9 0.69 0.78 162 | |
| Ornamenting 0.72 0.32 0.44 132 | |
| Packing 0.85 0.6 0.7 136 | |
| Paints 0.71 0.47 0.57 189 | |
| Paper 0.83 0.62 0.71 199 | |
| Philosophical instruments 0.83 0.72 0.77 256 | |
| Photography 0.87 0.66 0.75 111 | |
| Pipes 0.74 0.44 0.55 259 | |
| Printing, letterpress 0.88 0.68 0.77 247 | |
| Printing, other 0.81 0.52 0.64 304 | |
| Pumps 0.78 0.54 0.64 324 | |
| Railway etc. vehicles 0.85 0.73 0.78 598 | |
| Railway signals 0.88 0.83 0.85 238 | |
| Railways, etc. 0.87 0.76 0.81 296 | |
| Registering 0.83 0.64 0.72 370 | |
| Road vehicles 0.86 0.55 0.67 327 | |
| Roads 0.82 0.53 0.64 109 | |
| Ropes 0.76 0.37 0.5 106 | |
| Rotary engines 0.8 0.45 0.58 196 | |
| Sewage 0.76 0.6 0.67 136 | |
| Sewing 0.93 0.83 0.88 325 | |
| Ships, Div I 0.88 0.59 0.71 484 | |
| Ships, Div II 0.91 0.72 0.81 288 | |
| Ships, Div III 0.78 0.58 0.67 77 | |
| Shop accessories 0.77 0.43 0.56 46 | |
| Sifting 0.65 0.66 0.66 167 | |
| Signalling 0.7 0.6 0.65 143 | |
| Small arms 0.94 0.86 0.9 303 | |
| Spinning 0.94 0.85 0.89 901 | |
| Starch 0.88 0.34 0.49 104 | |
| Steam engines 0.77 0.63 0.69 625 | |
| Steam generators 0.85 0.64 0.73 626 | |
| Stone 0.83 0.69 0.75 51 | |
| Stoppering 0.88 0.77 0.82 261 | |
| Stoves 0.8 0.65 0.72 309 | |
| Sugar 0.86 0.7 0.77 87 | |
| Table articles 0.68 0.33 0.45 75 | |
| Tea 0.94 0.67 0.78 45 | |
| Tobacco 0.97 0.72 0.82 120 | |
| Toilet 0.73 0.43 0.54 77 | |
| Toys 0.88 0.75 0.81 223 | |
| Trunks 0.76 0.33 0.46 76 | |
| Umbrellas 0.99 0.77 0.86 107 | |
| Valves 0.82 0.58 0.68 361 | |
| Velocipedes 0.96 0.75 0.84 145 | |
| Ventilation 0.65 0.44 0.53 117 | |
| Washing 0.86 0.68 0.76 184 | |
| Watches 0.98 0.64 0.77 136 | |
| Waterproof fabrics 0.64 0.42 0.51 150 | |
| Wearing apparel 0.81 0.69 0.74 322 | |
| Weaving 0.94 0.79 0.86 751 | |
| Weighing apparatus 0.95 0.66 0.78 56 | |
| Wheels 0.8 0.39 0.53 145 | |
| Wood 0.84 0.49 0.62 229 | |
| Writing instruments 0.84 0.66 0.74 278 | |