| in a preferred embodiment | 6 | other |
| to purify water | 5 | purpose |
| for an electrosurgical apparatus | 4 | purpose |
| invention → relate to → electrode | 10 |
| invention → provide → electrode | 8 |
| invention → use → electrodeionization | 3 |
| invention → include → electrode | 3 |
| negative | neutral | positive |
| 0.020 | 0.775 | 0.205 |
| Raw frequency | 24 |
| Normalized frequency | 0.274 |
| Modifier score | 0.500 |
| Perplexity | 69.096 |