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294 results about "Social network analysis" patented technology

Social network analysis (SNA) is the process of investigating social structures through the use of networks and graph theory. It characterizes networked structures in terms of nodes (individual actors, people, or things within the network) and the ties, edges, or links (relationships or interactions) that connect them. Examples of social structures commonly visualized through social network analysis include social media networks, memes spread, information circulation, friendship and acquaintance networks, business networks, social networks, collaboration graphs, kinship, disease transmission, and sexual relationships. These networks are often visualized through sociograms in which nodes are represented as points and ties are represented as lines. These visualizations provide a means of qualitatively assessing networks by varying the visual representation of their nodes and edges to reflect attributes of interest.

Information recommending method based on social network

The invention discloses an information recommending method based on a social network. The information recommending method includes the following steps that first, trust degree and similarity between users are calculated, and a user relation matrix is constructed through weighted values; second, the users are clustered through a community discovering algorithm, and then a closest neighbor set of the users is formed; third, scores are predicted, and a recommending list is generated. The information recommending method based on the social network can achieve the following advantages that first, the cold start problem is solved: trust degree is introduced into the method, if enough neighbors cannot be obtained according to the common grading articles in the recommending process, trustable friends can serve as the start point of prediction, and thus the cold start problem can be relieved, and user coverage can be improved; real time performance is improved: community division is performed on the user network through the community discovering algorithm commonly used in social network analysis, in other words, same user interests are clustered, and thus the time for finding the neighbor set of the users is greatly shortened, and the real time performance of the information recommending response is improved.
Owner:NANJING UNIV OF POSTS & TELECOMM

Academic core author excavation and related information extraction method and system based on complex network

The invention belongs to the field of data mining, aims to solve the problem of excavating core authors in an academic field and intelligently extracting related information of the authors, and provides an improved academic core author excavation and information extraction method and system based on a core node discovery algorithm in the social network analysis technology. The method combines the vertical search technology, the social network analysis technology and the text analysis technology, and can find the core authors or groups of the academic field in the mass of information to further obtain related information of the authors. The method uses the vertical search technology to collect open source literature data, uses the bibliometric technology and the complex network analysis technology to analyze the importance of a variety of social entities in the data, and utilizes a community discovery algorithm to perform entity clustering based on the closeness degree of relationships between entities to find out an academic community. Users can find the core authors or an institution according to an entity importance ranking, and find the leadership team according to published articles amount distribution of cooperative groups.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Microblog popularity degree prediction method based on user and microblog theme and microblog popularity degree prediction system based on user and microblog theme

The present invention relates to the social network analysis field, in particular to a microblog popularity degree prediction method based on a user and microblog theme and a microblog popularity degree prediction system based on the user and microblog theme. The method comprises the steps of obtaining the microblog data and the user data in a preset time period, obtaining the user attribute characteristics and the microblog theme characteristics according to the microblog data and the user data, carrying out the normalization processing on the user attribute characteristics, carrying out the user clustering on the processed user characteristics, and obtaining the user class information according to a clustering result; according to the microblog theme characteristics and the user class information, obtaining a forwarding characteristic of the user clustering under a microblog theme, and calculating a weight coefficient under the microblog theme of the user clustering; according to the microblog theme characteristics, the user attribute characteristics and the weight coefficient, constructing a microblog popularity degree prediction model, and predicting the microblog popularity degree according to the microblog popularity degree prediction model.
Owner:INST OF COMPUTING TECH CHINESE ACAD OF SCI
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