Method and system for re-ranking search results

1. A method for re-ranking search results, comprising the steps of:

Step 1: receiving a search query;

Step 2: generating the search results based on the search query from a data source;

Step 3: retrieving a re-ranking expression, wherein the re-ranking expression is a text string that comes with the search query and does not perform any operation in generating the search results from the data sources; and

Step 4: re-ranking all or part of the documents in the search results based on the re-ranking expression; and

Step 5: displaying all or part of the documents in the search results with the re-ranked order.

2. The method of claim 1 , wherein the data source is at least one of a plurality of sources including, the internet, at least one of a plurality of data bases, or at least one of a plurality types of file systems.

3. The method of claim 1 , wherein the re-ranking expression is predefined or input in real-time by the user.

4. The method of claim 1 , wherein the re-ranking expression includes a re-ranking type and a re-ranking content.

5. The method of claim 4 , wherein the re-ranking type is a boolean re-ranking type and wherein the re-ranking content is a boolean expression.

6. The method of claim 4 , wherein the re-ranking type is a semantic re-ranking type and wherein the re-ranking content is a word, a phrase, a sentence, a paragraph, an article, or multiple articles.

7. The method of claim 6 , wherein the step 3 further comprising the sub-steps of:

(a) calculating a vector of the re-ranking content based on a term vector table;

(b) calculating a re-ranking relevance score between each vector in all or part of the document vectors in the search results and the vector of the re-ranking content; and,

(c) re-ranking all or part of the search result based on the re-ranking relevance score.

8. The method of claim 7 , wherein the re-ranking relevance score is the cosine value between each vector in all or part of the document vector in the search results and the vector of the re-ranking content.

9. The method of claim 1 , wherein the search query is based on a boolean search expression.

10. The method of claim 1 , wherein the search query is based on a semantic search expression.

11. A system for re-ranking search results, comprising:

a search unit for receiving a search query;

a generating unit for generating the search results based on the search query from a data source;

a re-ranking unit for retrieving a re-ranking expression, wherein the re-ranking expression is a text string that comes with the search query and does not perform any operation in generating the search results from the data sources, and

a re-ranking calculation unit for re-ranking all or part of the search results based on the re-ranking expression; and

a display unit for displaying all or part of the search result with the re-ranked order.

12. The system of claim 11 , wherein the data source is at least one of a plurality of sources including, the internet, at least one of a plurality of data bases, or at least one of a plurality types of file systems.

13. The system of claim 11 , wherein the re-ranking expression is predefined or input in real-time by the user.

14. The system of claim 11 , wherein the re-ranking expression includes a re-ranking type and a re-ranking content.

15. The system of claim 14 , wherein the re-ranking type is a boolean re-ranking type and wherein the re-ranking content is a boolean expression.

16. The system of claim 14 , wherein the re-ranking type is a semantic re-ranking type and wherein the re-ranking content is a word, a phrase, a sentence, a paragraph, an article, or multiple articles.

17. The system of claim 16 wherein the re-ranking unit further comprising:

(a) a vector calculation sub-unit for calculating a vector of the re-ranking content based on a term vector table;

(b) a scoring sub-unit for calculating a re-ranking relevance score between each vector in all or part of the document vectors in the search results and the vector of the re-ranking content; and,

(c) a re-ranking sub-unit for re-ranking all or part of the search result based on the re-ranking relevance score.

18. The system of claim 17 , wherein the re-ranking relevance score is the cosine value between the document vector and the vector of the re-ranking content.

19. The system of claim 11 , wherein the search query is based on a boolean search.

20. The system of claim 11 , wherein the search query is based on a semantic search.

21. A computer storage medium encoded with a computer program, the computer program comprising instructions that when executed cause a computer to perform operations comprising: receiving a search query and generating the search results based on the search query from a data source; retrieving a re-ranking expression wherein the re-ranking expression is a text string that comes with the search query and does not perform any operation in generating the search results from the data sources, and re-ranking all or part of the documents in the search results based on the re-ranking expression; and displaying all or part of the documents in the search results with the re-ranked order.