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Content analysis and citation analysis are two common methods in recommending system. Compared with content analysis, citation analysis can discover more implicitly related papers. However, the citation-based methods may introduce more noise in citation graph and cause topic drift. Some work combine content with citation to improve similarity measurement.(More)
In this paper, we present three methods for improving the searching speed and accuracy for query by humming (QBH) system with large melody database. 1) At the feature level, to minimize the inevitable errors caused by a single pitch extractor, three different pitch extraction algorithms are fused together to gain more credible and robust pitch sequence. 2)(More)
A gene from Pseudomonasfluorescens BIT-18 encoding a protein with phospholipase B activity (Pf-PLB) was cloned in E. coli BL21 (DE3). The open reading frame consists of 1272 bp and potentially encodes a protein of 423 amino acid residues with a calculated molecular mass of 45.8 kDa. The nucleotide sequence of Pf-PLB is 45%, 42%, 41%, 40%, 33%, and 31%(More)
Since it is the most natural way for people to search a specific melody in large music database, query by humming/singing is attracting more and more researcherspsila attention in the field of content-based music information retrieval. In this task, note-based and frame-based similarity measures are two commonly used methods. However, in previous works,(More)
With the number of online reviews growing rapidly, it is increasingly difficult to digest all the information within limited time. To help users efficiently get concise information about a product, researchers have studied algorithms for automated opinion summarization. However, users might expect to further read detailed high-quality reviews in addition to(More)
Recombinant β-glucuronidase (GUS) expressed in Pichia pastoris GS115 is an important glycoprotein, encoded by a gene with four potential N-glycosylation sites. To investigate the impact of N-linked carbohydrate moieties on the stability of recombinant GUS, it was deglycosylated by peptide-N-glycosidase F (PNGase-F) under native conditions. The enzymatic(More)
It was disclosed in our group for the first time that the flavonoids in Lonicera japonica Thunb. are related to its therapy for gastric ulcer. Based on this finding, 20 flavonoids were selected for Helicobacter pylori urease inhibitory activity evaluation, and quercetin showed excellent potency with IC(50) of 11.2 ± 0.9 μM. Structure-activity relationship(More)
In this paper, we propose a mining algorithm to utilize the user clickthrough data to improve search performance. The algorithm first explores the relationship between queries and Web pages and mine out co-visiting relationship as the virtual link among the Web pages, and then Spreading Activation mechanism is used to perform the query-dependent search. Our(More)