摘要:
Techniques for identifying influential users of a social networking service are provided. Influential users may be identified via an algorithm in which an influence score is assigned to each user based at least in part on other members of the community users having taken an affirmative step with respect to the user's communications. Iterative processing may be performed, with each user's influence score being determined by contributions from other users, and each contribution being determined by the contributor's influence score as of a prior iteration. A map-reduce framework may be employed, with data representing the community being partitioned into a plurality of discrete shards, a map process corresponding to each shard calculating an influence score for users represented in the shard, and reduce processes ranking users according to influence score across all shards.
摘要:
Techniques for identifying influential users of a social networking service are provided. Influential users may be identified via an algorithm in which an influence score is assigned to each user based at least in part on other members of the community users having taken an affirmative step with respect to the user's communications. Iterative processing may be performed, with each user's influence score being determined by contributions from other users, and each contribution being determined by the contributor's influence score as of a prior iteration. A map-reduce framework may be employed, with data representing the community being partitioned into a plurality of discrete shards, a map process corresponding to each shard calculating an influence score for users represented in the shard, and reduce processes ranking users according to influence score across all shards.
摘要:
Some embodiments of the invention employ algorithms enabling the calculation of one or more statistical moments in a single pass of a dataset. For example, some embodiments may apply algorithms for calculating statistical moments to a dataset using a map-reduce framework, whereby an input dataset is partitioned into multiple shards, a separate map process is used to apply an algorithm enabling calculation of one or more statistical moments in a single scan to each shard, and one or more reduce processes consolidate the results generated by the map processes to calculate the one or more statistical moments across the entire dataset. In other embodiments of the invention, a map-reduce framework may be employed to apply algorithms enabling calculation of a covariance between data elements expressed in a dataset, instead of or in addition to one or more statistical moments.
摘要:
The present invention is directed to a mobile agent technique, and in particular to a method for moving/transmitting to a desired computer, an agent and a message that the agent issues. According to the present invention, a temporary storage area (a computer having a storage device) for a destination computer of a mobile agent and a message is provided. When a mobile agent or a message can not move directly to a destination computer, the mobile agent and the message are temporarily stored in the temporary storage area. At an appropriate time, the destination computer extracts from the temporary storage area the agent and the message addressed to it. Since the temporary storage area is provided, the movement of the agent and the transmission of the message are ensured. Also because the temporary storage device is provided, the destination computer can accept a mobile agent and a message in accordance with the situation and the condition of the destination computer.