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784 results about "Crowdsourcing" patented technology

Crowdsourcing is a sourcing model in which individuals or organizations obtain goods and services, including ideas and finances, from a large, relatively open and often rapidly-evolving group of internet users; it divides work between participants to achieve a cumulative result. The word crowdsourcing itself is a portmanteau of crowd and outsourcing, and was coined in 2006. As a mode of sourcing, crowdsourcing existed prior to the digital age (i.e. "offline").

Crowdsourcing system based on block chain technology and manufacturing method thereof

The invention discloses a crowdsourcing system based on block chain technology and a manufacturing method thereof. The system comprises an application layer, a block chain layer and a data storage layer connected in succession. The block chain layer comprises a plurality of interconnected blocks. The blocks comprise intelligent contract templates. The application layer is used to edit and record the information of the employer and the employees. The intelligent contract templates are used for user information registration, user task crowdsourcing condition achieving, and task crowdsourcing result summing as well as for creating and modifying the intelligent contracts. The data storage layer is used to store is used to store the detailed description information about the original data information tasks and the uploaded information of the task results. The Hash value of the original data information is stored in the block chain layer. The system and the method of the invention enable the employer and the employees to complete transactions automatically without a third-party intermediary agent, and moreover, the data of the block chain layer does not rely on the central database, eliminating the problem with single point fault. And the data cannot be tampered with or traced.
Owner:JINAN UNIVERSITY

Text classification model optimization method based on crowdsourcing feedback and active learning

The invention discloses a text classification model optimization method based on crowdsourcing feedback and active learning. The method comprises the following steps that: selecting a text dataset, dividing the text dataset into an initial training set and a residual dataset; obtaining a word from the text dataset; constructing the feature set of the text dataset, and carrying out vectorization on the text dataset; and introducing the active learning on a classification model, predicting the sentiment polarity of the text dataset subjected to the vectorization, and combining a crowdsourcing feedback information optimization model to obtain a text classification result. By use of the method, constructing is used for collecting manually annotated reasons, more user information is obtained, the subjective feeling of people is mined, crowdsourcing feedback information is fused into the model in a weight change way, and the text classification model is optimized so as to improve model classification performance. An active learning algorithm is also introduced, and an annotation sample with a highest value is picked up and handed to a crowdsourcing platform to be annotated so as to lower annotation cost. Under a limited budget, annotation accuracy is improved, and the problem that a text classification task containing label data is in shortage is solved.
Owner:EAST CHINA NORMAL UNIV

Crowdsourcing-based novel question answering system

ActiveCN104615755AQ&A is fast and accurateSpecial data processing applicationsData feedData source
The invention provides a crowdsourcing-based novel question answering system comprising a question answering module, an intelligent answering module, a question answering analysis module, a mediating mode decision module, a data source query module and an optimizing module. The question answering analysis module acquires key word groups according to acquired question answering data; the mediating mode decision module generates a mediating mode according to the key word groups and a preset attribute candidate set by mapping; the data source query module generates data source query statements according to the mediating mode and retrieves entity data from multiple data sources; the optimizing module packages crowdsourcing data into a crowdsourcing task and transmits the crowdsourcing task to the intelligent answering module; the optimizing module generates intelligent answering data according to the crowdsourcing feedback data fed back by the intelligent answering module. The crowdsourcing-based novel question answering system has the advantages that the technical problem that the automatic question answering system is limited to semantic analysis has high technical difficulty and high cost is solved, the technical problem that a community question answering system cannot be timely is solved, and questions posed by users are quickly and accurately answered.
Owner:BEIHANG UNIV
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