Adaptive crawl rates based on publication frequency
First Claim
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1. A system for adaptively deploying a Web-crawler to a Web source at a crawl rate based on historical publication data for the Web source, the system comprising:
- a computing device associated with a search engine having one or more processors and one or more computer-readable storage media; and
a data store coupled with the search engine,wherein the search engine;
determines an update frequency estimation for a particular Web page, the update frequency estimation being determined according to;
Fi=Σ
k=1iwkFi-k A) wherein Fi is the update frequency estimation for the particular Web page for a time period, i,B) wherein wk is a weight factor given to a particular time segment, k, included in the time period, andC) wherein Fi-k is a publication rate for a given time segment included in the current time period; and
calculates the adaptive crawl rate by multiplying the update frequency estimation for the particular Web page by a constant.
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Abstract
Methods and systems for determining an adaptive crawl rate for a Web crawler based on historical publication data from a Web source are provided. A frequency of publication of the Web source is determined over a specified period of time, and an adaptive crawl rate is calculated using the frequency of publication. The Web crawler is then deployed at the calculated adaptive crawl rate.
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Citations
20 Claims
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1. A system for adaptively deploying a Web-crawler to a Web source at a crawl rate based on historical publication data for the Web source, the system comprising:
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a computing device associated with a search engine having one or more processors and one or more computer-readable storage media; and a data store coupled with the search engine, wherein the search engine; determines an update frequency estimation for a particular Web page, the update frequency estimation being determined according to;
Fi=Σ
k=1iwkFi-kA) wherein Fi is the update frequency estimation for the particular Web page for a time period, i, B) wherein wk is a weight factor given to a particular time segment, k, included in the time period, and C) wherein Fi-k is a publication rate for a given time segment included in the current time period; and calculates the adaptive crawl rate by multiplying the update frequency estimation for the particular Web page by a constant. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computerized method carried out by a search engine running on a processor for adaptively deploying a Web-crawler at a crawl rate based on historical publication data, the method comprising:
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determining, using the processor, an update frequency estimation for a particular Web page, the update frequency estimation being determined according to;
Fi=Σ
k=1iwkFi-kA wherein Fi is the update frequency estimation for the particular Web page for a time period, i, a) wherein wk is a weight factor given to a particular time segment, k, included in the time period, and C) wherein Fi-k publication rate for a given time segment included in the current time period; and calculating the adaptive crawl rate by multiplying the update frequency estimation for the particular Web page by a constant. - View Dependent Claims (9, 10, 11, 12)
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13. One or more computer-readable storage devices not consisting of a signal and storing computer-executable instructions, which, when executed by a computing device, cause the computing device to perform a method for determining an adaptive crawl rate based upon historical publication data, the method comprising:
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determining an update frequency estimation for a particular Web page, the update frequency estimation being determined according to;
Fi=Σ
k=1iwkFi-kA) wherein Fi is the update frequency estimation for the particular Web page for a time period, i, B) wherein wk is a weight factor given to a particular time segment, k, included in the time period, and C) wherein Fi-k is a publication rate for a given time segment included in the current time period; and calculating the adaptive crawl rate by multiplying the update frequency estimation for the particular Web page by a constant. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification