Gong Yingying, Han Jiashan, Zhan Wang, Yao Wei
Present there is a lack of systematic analysis of public information service platform of disadvantaged information groups, through theory analysis and instance collection, public information service platform of disadvantaged information groups is builded from information supporting perspective.Using literature analysis, information supporting is analyzed through 4 main points:provider, goal, major issue, basic instrument.And on this basis barrier types of information supporting in disadvantaged information groups are fully discussed.According to barrier types, different channels of public information service are divided.Corresponding instances are also collected to provide certain support to divided channels.Then group system, institution system, communication and expectation confirmation system of public information service platform are designed, and public information service platform is established.Characteristics of homogeneity and heterogeneity in different disadvantaged information groups are caused by different barrier types existed in information supporting, they determines that public information service platform not only which provides homogeneous information service and scope of acceptor targeting the whole disadvantaged information groups, but only provides special information service and focuses on special populations and distinctive individual.Public information services need to consider objectivity of information and subjectivity of demand.Public information service platform is a multi-dimensional, and participants present diversity.Public information service platform is social service network and takes the service, trust, voluntary and mutual benefit as its starting point.