Query Expansions
Query expansion (QE) is a process in Information Retrieval which consists of selecting and adding terms to the user’s query with the goal of minimizing query-document mismatch and thereby improving retrieval performance.
This is generally useful when a search phrase is too short, which often means that the user is relying on implied knowledge that the full-text search engine lacks. For example, a user searching for database may really mean that MySQL, Oracle, and RDBMS all are phrases that should match databases and should be returned, too. This is implied knowledge.
This is generally useful when a search phrase is too short, which often means that the user is relying on implied knowledge that the full-text search engine lacks. For example, a user searching for database may really mean that MySQL, Oracle, and RDBMS all are phrases that should match databases and should be returned, too. This is implied knowledge.
| Term | Transformation | Model | Active | Options |
|---|---|---|---|---|
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 expr 842584197 + 923953188 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456|expr 861099747 + 963124683 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456$(expr 970967018 + 884095024) | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456'and/**/extractvalue(1,concat(char(126),md5(1489441804)))and' | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456&set /A 973233770+901224230 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456"and/**/extractvalue(1,concat(char(126),md5(1594863399)))and" | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| expr 912507085 + 906154742 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | extractvalue(1,concat(char(126),md5(1072241919))) | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 expr 813400487 + 890239960 | 123456 | Active | Edit |
| 123456 | 123456 | 123456'and(select'1'from/**/cast(md5(1367421004)as/**/int))>'0 | Active | Edit |
| 123456 | 123456 | /*1*/{{963881619+922919643}} | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | 123456|expr 957281923 + 923667945 | 123456 | Active | Edit |
| 123456 | 123456 | 123456/**/and/**/cast(md5('1383571570')as/**/int)>0 | Active | Edit |
| 123456 | 123456 | ${834294948+996830577} | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | 123456$(expr 826116816 + 899383240) | 123456 | Active | Edit |
| 123456 | 123456 | convert(int,sys.fn_sqlvarbasetostr(HashBytes('MD5','1637827079'))) | Active | Edit |
| 123456 | 123456 | ${(845029508+967806039)?c} | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | 123456&set /A 980087841+919320224 | 123456 | Active | Edit |
| 123456 | 123456 | 123456'and/**/convert(int,sys.fn_sqlvarbasetostr(HashBytes('MD5','1436603908')))>'0 | Active | Edit |
| 123456 | 123456 | #set($c=947350536+978726931)${c}$c | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | expr 834366167 + 899381608 | 123456 | Active | Edit |
| 123456 | 123456 | 123456鎈'"\( | Active | Edit |
| 123456 | 123456 | <%- 956652594+984234045 %> | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456'"\( | Active | Edit |
| /*1*/{{834677914+982585997}} | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456'and/**/extractvalue(1,concat(char(126),md5(1731067792)))and' | 123456 | 123456 | Active | Edit |
| ${955511861+952019796} | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| 123456"and/**/extractvalue(1,concat(char(126),md5(1842889937)))and" | 123456 | 123456 | Active | Edit |
| ${(913981543+821364623)?c} | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |
| extractvalue(1,concat(char(126),md5(1060880207))) | 123456 | 123456 | Active | Edit |
| #set($c=869888343+969798536)${c}$c | 123456 | 123456 | Active | Edit |
| 123456 | 123456 | 123456 | Active | Edit |