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41 results about "Page rank" patented technology

Definition of Page Rank. Page Rank (often denoted PR) is a quantity defined by Google that provides a rough estimate of the overall importance of a web page. Many factors influence Page Rank, thus it is a poor indicator of how well a page ranks for particular keywords. Contrary to popular belief, the word "page" in Page Rank has nothing...

Method for identifying microblog key users based on improved Page Rank

The invention discloses a method for identifying microblog key users based on an improved Page Rank. The method comprises the steps that microblog information data are input, wherein the microblog information data comprise n microblogs; word segmentation is conducted on texts of the n microblogs; according to a word segmentation result, a reverse index structure is established, so that retrieval is conveniently conducted according to appointed keywords; according to the retrieved relevant microblog, forwarding hierarchy information of the microblog is extracted and a weighting directed graph is established, wherein the weighting directed graph is a forwarding network G; the forwarding network G is divided into a plurality of maximum connected subgraphs Gi; the Page rank algorithm is applied to each sub network Gi according to the parallelization computing technology; computing results of the sub networks are combined, so that ranking results of the whole network G are generated; the first m ranking results of the ranking results are selected, serve as the key users and are output. According to the method for identifying the microblog key users based on the improved Page Rank, the parallelization computing technology is adopted, a dynamic forwarding network of a microblog platform is ranked and computed in a big data environment, so that the key users in the information transmission process are identified, and the method is applied to the fields of network public opinion analysis and the like.
Owner:BEIHANG UNIV

Cluster page ranking equipment and method based on clustering/classification and time

The invention provides cluster page ranking equipment and method based on clustering/classification and time. The cluster page ranking equipment comprises a searcher, a cluster builder, a cluster page ranking calculator, a cluster trend generator and a cluster trend ranking device, wherein the searcher is configured to search relevant documents from data sets according to given query statements and calculate document related values of the searched documents, thus obtaining related document sets of the sequencing; the cluster builder is configured to cluster or classify the related document sets, thus obtaining a cluster; the cluster page ranking calculator based on time is configured to calculate cluster page ranking values (TCP values) based on cluster calculation on the basis of the cluster, and is a combination of document link values based on time of all the documents in the cluster and is used as a combination of the page ranking values based on time, author ranking values based on time and document library ranking values based on time of all the documents in the cluster; the cluster trend generator is configured to calculate the future TCP value of the cluster according to the TCP value; and the cluster trend ranking device is configured to sequence future TCP values, thus obtaining trend.
Owner:RICOH KK

Friend recommendation method based on single-source SimRank exact solution

The invention discloses a friend recommendation method based on a single-source SimRank exact solution. The friend recommendation method comprises the following steps of: converting a target user, users and a relationship among the users into a graph structure G; calculating personalized Page ranks of a source node vi relative to all nodes on the graph, forming a personalized Page ranking vector pi<right arrow>, calculating a no-more-meeting probability of all nodes on the graph structure G, forming a no-more-meeting probability matrix D<^>, calculating the SimRank similarity of the sourcenode vi according to an n-dimensional vector pi<right arrow> and the no-more-meeting probability matrix D<^> to obtain an n-dimensional vector S<right arrow>, repeatedly executing L rounds of calculation of the SimRank similarity, and updating the n-dimensional vector S<right arrow>; and finding out a node corresponding to the t dimension with the maximum value in all dimensions of an n-dimensional vector S<right arrow L>, and recommending the users corresponding to the t nodes to the target user as a result. The friend recommendation method based on the single-source SimRank exact solutioncan guarantee to obtain the exact solution of the single-source SimRank similarity on a large-scale user group within valid time, and the quality and effect of a friend recommendation function are improved.
Owner:RENMIN UNIVERSITY OF CHINA
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