Maoyuan Zhang

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Protein-protein interaction plays an important role in understanding biological processes. In order to resolve the parsing error resulted from modal verb phrases and the noise interference brought by appositive dependency, an improved tree kernel-based PPI extraction method is proposed in this paper. Both modal verbs and appositive dependency features are(More)
At present, the retrieval approaches could not match the concept with identical meaning but dissimilar expression. To aim at solving the problem, this paper puts forward a retrieval model based on concept extending. The system model is composed of three levels, which are the query level, the concept extending level, and the retrieval level. In the model, an(More)
Semantic Knowledge is usually adding into topic model to improve topic coherence. However, it's hard to judge whether semantic information is related to topic without using complicated lexical characteristics. In this paper, we demonstrate a novel model called Cloud Transformation Model, which can easily judge whether semantic information is related to(More)
This paper implemented the query terms level's concept extending to acquire the numerical characteristics of the query terms based on cloud model, elevated the concept of the lower query terms level to the higher query level, used the numerical characteristics of the query we gained from the concept level arisen to re-rank documents. This paper researched(More)
By introducing cloud model, this paper presents a re-ranking method which improves the accuracy of the IR (information retrieval) while recall is preserved. It is rare in traditional Chinese information retrieval to consider uncertainty while calculating the related degree of the query and each document in the result set. This paper researches IR in a(More)