Research Article
Effective Preprocessing and Normalization Techniques for COVID-19 Twitter Streams with POS Tagging via Lightweight Hidden Markov Model
Table 12
Proposed method accuracy rate on POS tagging of tweets.
| | Techniques | BLEU (%) | WER (%) |
| | Regular expression | 81.26 | 8.91 | | Replace() function using WordNet | 80.19 | 10.73 | Expanding abbreviations by CSV file
Replacement | 78.22 | 12.18 | | NLTK library | 79.14 | 10.98 | | Proposed model | 83.25 | 8.23 |
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