Patent ID: 11928117
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A computer-implemented method comprising:
obtaining, by one or more processors, a plurality of live comments for a video, the plurality of live comments being associated with a plurality of fragments in the video, respectively;
classifying, by the one or more processors, each live comment of the plurality of live comments into a topic of a plurality of topics associated with the video;
extracting, by the one or more processors, a plurality of features from the plurality of live comments, respectively, wherein the plurality of features comprises a text feature for representing a text of a particular live comment, a time feature for representing a time point of a fragment in the video when a particular live comment is submitted, and a time relevance feature for representing a time relationship between a first live comment and a second live comment in the plurality of live comments;
generating, by the one or more processors, a knowledge base for the plurality of live comments based on the plurality of features and the plurality of topics, wherein the knowledge base acts as a searchable index for the plurality of live comments, wherein generating the knowledge base comprises:
generating, by the one or more processors, a graph based on the plurality of features, the graph including: a plurality of nodes respectively corresponding to the plurality of live comments and a plurality of edges among the plurality of nodes;
dividing, by the one or more processors, the graph into at least one subgraph based on the plurality of nodes and the plurality of edges; and
building, by the one or more processors, at least one knowledge model that is included in the knowledge base based on the at least one subgraph; and

in response to detecting that a further live comment has been inputted by a user and includes a question regarding a live comment of the plurality of comments or the video, identifying, by the one or more processors, a respective topic of the plurality of topics of the further live comment and searching, by the one or more processors, the knowledge base for an answer to the question based on the topic.