“Search method”版本间的差异
来自cslt Wiki
（→synonyms method） |
（→synonyms method） |
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==synonyms method== | ==synonyms method== | ||
* fuzzy match | * fuzzy match | ||
| − | :* | + | :* calculate the similarity value = 1/(5-5*av_value).where av_value = average(word2vec+Synonyms forest+hownet). |
* lucene | * lucene | ||
| − | :* lucene4.6 already added synonyms method (org.apache.lucene.analysis.synonym[http://lucene.apache.org/core/4_0_0/analyzers-common/org/apache/lucene/analysis/synonym/package-summary.html#package_description]) | + | :* lucene4.6 already added synonyms method (org.apache.lucene.analysis.synonym[http://lucene.apache.org/core/4_0_0/analyzers-common/org/apache/lucene/analysis/synonym/package-summary.html#package_description]) like :(a -> x) (a b -> y) (b c d -> z) or extend the query. |
| − | : | + | :* |
==find== | ==find== | ||
2014年11月5日 (三) 13:05的版本
lucene method
- data set
- jiangkaipeng:
- different method result
| method | Default | BM25 | LMDirichlet | DFR | LMJelinekMercer | IB |
|---|---|---|---|---|---|---|
| Accary | 0.66228 | 0.66228 | 0.4091 | 0.65476 | 0.65476 | 0.6666 |
- add boost keyword
| method | Default | idf_train | idf_train_norm | idf_baidu | idf_baidu_norm |
|---|---|---|---|---|---|
| Accary | 0.66228 | 0.651629 | 0.57644 | 0.647869 | 0.65288 |
our method
| method | lucene | BM25 | VSM |
|---|---|---|---|
| Accary | 0.6184 | 0.614 | 0.377 |
synonyms method
- fuzzy match
- calculate the similarity value = 1/(5-5*av_value).where av_value = average(word2vec+Synonyms forest+hownet).
- lucene
- lucene4.6 already added synonyms method (org.apache.lucene.analysis.synonym[1]) like :(a -> x) (a b -> y) (b c d -> z) or extend the query.
find
- 采用最细粒度分词(对于标准问题在建立索引时，模板不用),可以提高正确率。61=>66.对于标准问题建索引时.
- 对输入的问题不应用细粒度分词（细粒度的59%，不用66%）。
- lucene4.6 已经增加了同义词拓展[2]
