Review Article
Emerging Technologies of Natural Language-Enabled Chatbots: A Review and Trend Forecast Using Intelligent Ontology Extraction and Patent Analytics
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| T01 | NLP | Speech recognition | 703 | 673 | | 343 | 307 | | 452 | 484 | 630 | T02 | NLP | Named entity recognition | | 412 | 484 | 301 | 339 | 852 | 134 | 318 | 217 | T03 | NLP | Natural language understanding | 809 | 503 | 514 | 195 | 177 | 627 | 87 | 249 | 188 | T04 | NLP | Natural language generation | 989 | 724 | 827 | 308 | 348 | 759 | 105 | 378 | 272 | T05 | Model | Feature engineering | 571 | 377 | 306 | 436 | 372 | 470 | 136 | 299 | 190 | T06 | Model | Recurrent neural network | 569 | 386 | 613 | 257 | 244 | 332 | 190 | 110 | 161 | T07 | Model | Convolutional neural network | 317 | 251 | 446 | 287 | 327 | 208 | 149 | 98 | 144 | T08 | Model | Transformer model | | | | 514 | 422 | 714 | 308 | 452 | 448 | T09 | System | Speech-generating device | | | | 622 | 384 | | 792 | 998 | 963 | T10 | System | Cloud computing | 341 | 422 | 237 | 358 | 213 | 465 | 487 | 452 | 458 | T11 | System | Voice activity detection | 309 | 377 | 241 | 283 | 120 | 379 | 780 | 557 | 705 | T12 | System | Human-computer interaction | 685 | 858 | 509 | 512 | 260 | 626 | 803 | | 850 | T13 | System | Immersive technologies | 307 | 417 | 211 | 272 | 123 | 211 | 439 | | |
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