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Ask BigNews is an automated internet-based news aggregator and search engine provided by Ask.com on February 6, 2008. News are retrieved from more than 10.000 sources and automatically grouped into ''stories''; for each story a ''BigPicture'' page is produced, offering an overall view of all pertaining elements (news articles, blog posts, images, videos and diggs), following an integrated approach similar to the one adopted since June 2007 by Ask's web search. The system recognizes and keeps track of the evolution of each story, allowing users to "go back in time" (up to 30 days in the past〔) or track it in order to follow its further progress. Stories are ranked by means of an index called ''BigFactor''; although the details of BigFactor's computation aren't known, Ask.com declares〔 it estimates a story's importance taking into account four parameters: ''breaking'' (the story's freshness), ''impact'' (how frequently the story is being referred to by other articles and blogs), ''media'' (the number and quality of multimedia contents related to the story) and ''discussion'' (how much attention the story gained from the public). == See also == * Ask.com * Google News * Yahoo! News 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ask BigNews」の詳細全文を読む スポンサード リンク
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