Table 2.
The percentage of intersected terms over 20 extracted topics between various topic modeling methods in the CAMDA dataset. The diagonal values represent the number of distinct terms in 20 topics extracted by each topic modeling method.
| NMF | LSI | FLSA | PLSA | LDA | CTM | LDA2VEC | TOP2VEC | BERTopic | CombinedTM | ETM | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NMF | 278 | 56% | 50% | 57% | 55% | 62% | 37% | 43% | 49% | 57% | 56% |
| LSI | 90% | 172 | 62% | 65% | 70% | 62% | 44% | 50% | 62% | 67% | 70% |
| FLSA | 37% | 28% | 379 | 46% | 31% | 39% | 28% | 29% | 28% | 39% | 33% |
| PLSA | 42% | 29% | 60% | 380 | 39% | 39% | 34% | 36% | 31% | 43% | 37% |
| LDA | 69% | 54% | 52% | 68% | 222 | 58% | 41% | 45% | 55% | 63% | 64% |
| CTM | 69% | 43% | 58% | 59% | 52% | 250 | 34% | 40% | 42% | 59% | 65% |
| LDA2VEC | 42% | 30% | 43% | 53% | 37% | 35% | 246 | 52% | 37% | 47% | 32% |
| TOP2VEC | 46% | 33% | 43% | 53% | 38% | 38% | 50% | 259 | 42% | 51% | 41% |
| BERTopic | 69% | 54% | 53% | 58% | 62% | 52% | 45% | 54% | 199 | 63% | 57% |
| CombinedTM | 50% | 37% | 47% | 51% | 44% | 46% | 36% | 42% | 39% | 317 | 41% |
| ETM | 68% | 53% | 55% | 62% | 62% | 71% | 35% | 50% | 50% | 57% | 228 |