Document scoring based on document inception date

• US 7,840,572 B2
• Filed: 11/20/2006
• Issued: 11/23/2010
• Est. Priority Date: 09/30/2003
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Google Inc. (Alphabet Inc.)
• Inventors: Henzinger, Monika, Lawrence, Steve, Pfleger, Karl, Tong, Simon, Cutts, Matt, Haahr, Paul, Dean, Jeffrey
• Primary Examiner(s): Vy; Hung T
• Application Number:
  US11/561,625
• Publication Number:
  US 20070094254A1
• Time in Patent Office: 1,464 Days
• Field of Search: 707 1- 5, 707/7, 707/736, 707/748, 707/750, 707/751, 715/513
• US Class Current: 707/751
• CPC Class Codes: G06F 16/951 Indexing; Web crawling techniques
• CPC Class Codes: G06Q 30/0246 Traffic
• CPC Class Codes: Y10S 707/99933 Query processing, i.e. searching

Abstract

A system may determine a document inception date associated with a document, generate a score for the document based, at least in part, on the document inception date, and rank the document with regard to at least one other document based, at least in part, on the score.

Claims

1. A method implemented by one or more server devices, the method comprising:

identifying, by a processor of the one or more service devices, a document inception date associated with a document, where the document is one of a plurality of documents in a group, where identifying the document inception date includes one of;

identifying a date on which a search engine first identifies or indexes the document as the document inception date,

identifying a date on which a search engine first identifies a link to the document as the document inception date,

identifying a date on which a domain associated with the document is registered as the document inception date,

identifying a date on which the document is first referenced in another document as the document inception date, or

identifying a date on which the document includes at least a threshold number of pages as the document inception date;

generating, by a processor of the one or more server devices, a score for the document based on the document inception date;

ranking, by a processor of the one or more server devices, the document with regard to at least one other document based on the score;

calculating an average age of the documents in the group based on document inception dates associated with the documents; and

scoring the document based on a difference between the document inception date and the average age of the documents in the group.

2. The method of claim 1, where identifying the document inception date includes:

identifying the date on which the search engine first identifies or indexes the document as the document inception date; and

where generating the score for the document includes generating the score for the document based on the date on which the search engine first identifies or indexes the document.

3. The method of claim 1, where identifying the document inception date includes:

identifying the date on which the search engine first identifies a link to the document as the document inception date; and

where generating the score for the document includes generating the score for the document based on the date on which the search engine first identifies the link to the document.

4. The method of claim 1, where identifying the document inception date includes:

identifying the date on which the domain associated with the document is registered as the document inception date; and

where generating the score for the document includes generating the score for the document based, on the date on which the domain associated with the document is registered.

5. The method of claim 1, where identifying the document inception date includes:

identifying the date on which the document is first referenced in another document as the document inception date; and

where generating the score for the document includes generating the score for the document based on the date on which the document is first referenced in the other document.

6. The method of claim 5, where the other document includes a news article, a newsgroup posting, a blog posting, or a mailing list.

7. The method of claim 1, where identifying the document inception date includes:

identifying the date on which the document includes at least the threshold number of pages as the document inception date; and

where generating the score for the document includes generating the score for the document based on the date on which the document includes at least the threshold number of pages.

8. The method of claim 1, where identifying the document inception date includes:

at least two of;

identifying the date on which the search engine first identifies or indexes the document as a factor in computing the document inception date,

identifying the date on which the search engine first identifies the link to the document as a factor in computing the document inception date,

identifying the date on which the domain associated with the document is registered as a factor in computing the document inception date,

identifying the date on which the document is first referenced in another document as a factor in computing the document inception date,

identifying the date on which the document includes at least a threshold number of pages as a factor in computing the document inception date, or

identifying a date from a timestamp provided by a server hosting the document as a factor in computing the document inception date, and

computing the document inception date based on at least two of the factors.

9. The method of claim 1, where generating the score for the document includes:

generating a first score for the document, and

altering the first score based on the document inception date, to obtain a second score.

10. The method of claim 9, where altering the first score includes:

adjusting the first score based on an amount of time that has elapsed since the document inception date.

11. The method of claim 1, further comprising:

identifying a rate at which links to the document are created based on the document inception date; and

where generating the score for the document includes;

scoring the document based on the rate at which links to the document are created.

12. The method of claim 1, where generating a score for the document includes:

identifying a first score for the document, and

adjusting the first score based on a difference between the document inception date and the average age of the documents in the group, to obtain a second score.

13. A system, comprising:

one or more devices comprising;

means for identifying a document inception date associated with a document that is one of a group of documents, where the identifying is based on a date on which a search engine first identifies or indexes the document or first identifies a link to the document;

means for calculating an amount of time that has elapsed since the document inception date;

means for generating a score for the document based on the amount of time that has elapsed since the document inception date;

means for ranking the document with regard to at least one other document based on the score;

means for calculating an average age of the documents in the group based on document inception dates associated with the documents; and

means for scoring the document based on a difference between the document inception date and the average age of the documents in the group.

14. The system of claim 13, where the means for determining the document inception date associated with the document further includes one of:

means for identifying a date on which a domain associated with the document is registered as the document inception date,

means for identifying a date on which the document is first referenced in another document as the document inception date, or

means for identifying a date on which the document includes at least a threshold number of pages as the document inception date.

15. The system of claim 13, where the one or more devices further comprise:

means for generating a link-based score for the document; and

means for altering the link-based score based on the score;

where the means for ranking the document ranks the document based on the altered link-based score.

16. The system of claim 13, where the means for identifying the document inception date associated with the document includes at least one of:

means for identifying a date on which a search engine first identifies or indexes the document as the document inception date,

means for identifying a date on which a search engine first identifies a link to the document as the document inception date,

means for identifying a date on which a domain associated with the document is registered as the document inception date,

means for identifying a date on which the document is first referenced in another document as the document inception date, or

means for identifying a date on which the document includes at least a threshold number of pages as the document inception date.

17. A memory device that includes instructions executable by a processor, the memory device comprising:

one or more instructions to identify a document inception date associated with a document, where the document is one of a plurality of documents in a group, where the one or more instructions for identifying the document inception date include one of;

one or more instructions to identify a date on which a search engine first identifies or indexes the document as the document inception date,

one or more instructions to identify a date on which a search engine first identifies a link to the document as the document inception date,

one or more instructions to identify a date on which a domain associated with the document is registered as the document inception date,

one or more instructions to identify a date on which the document is first referenced in another document as the document inception date, or

one or more instructions to identify a date on which the document includes at least a threshold number of pages as the document inception date;

one or more instructions to generate a score for the document based on the document inception date;

one or more instructions to rank the document with regard to at least one other document based on the score;

one or more instructions to calculate an average age of the documents in the group based on document inception dates associated with the documents; and

one or more instructions to score the document based on a difference between the document inception date and the average age of the documents in the group.

18. The memory device of claim 17, where the one or more instructions to generate a score for the document include:

one or more instructions to identify a first score for the document, and

one or more instructions to adjust the first score based on the difference between the document inception date and the average age of the documents in the group, to obtain a second score.