PMI score comparisons of word-based hot topic results
| Dataset | Method | k = 3 | k = 4 | k = 5 | k = 6 |
|---|---|---|---|---|---|
| New Energy Vehicles | NMF | 0.4100 | 0.0421 | −0.2634 | −0.4989 |
| SeaNMF | 1.1105 | 1.0638 | 0.3571 | 0.1631 | |
| SSAHM | 1.9846 | 1.5971 | 1.1570 | 0.7077 | |
| SSAHM-POS | 1.7344 | 1.4937 | 0.8402 | 0.5516 | |
| Big Data Industry Expo | NMF | −0.6051 | −1.0033 | −0.8690 | −1.0479 |
| SeaNMF | 0.0546 | −0.2319 | −0.4932 | −0.9210 | |
| SSAHM | 1.8897 | 1.2290 | 0.6344 | −0.2228 | |
| SSAHM-POS | 1.3694 | 1.1186 | 0.6098 | −0.4036 |
| Dataset | Method | ||||
|---|---|---|---|---|---|
| New Energy Vehicles | NMF | 0.4100 | 0.0421 | −0.2634 | −0.4989 |
| SeaNMF | 1.1105 | 1.0638 | 0.3571 | 0.1631 | |
| SSAHM | |||||
| SSAHM-POS | |||||
| Big Data Industry Expo | NMF | −0.6051 | −1.0033 | −0.8690 | −1.0479 |
| SeaNMF | 0.0546 | −0.2319 | −0.4932 | −0.9210 | |
| SSAHM | |||||
| SSAHM-POS |
Note(s): The large-signed PMI value verifies the large coherence between top keywords
Sharing content requires targeting cookies to be enabled. Please update your cookie preferences to use this feature.