منابع مشابه
B-Rank: A top N Recommendation Algorithm
In this paper I propose B-Rank, an efficient ranking algorithm for recommender systems. B-Rank is based on a random walk model on hypergraphs. Depending on the setup, B-Rank outperforms other state of the art algorithms in terms of precision, recall ∼ (19%− 50%) and inter list diversity ∼ (20%− 60%). B-Rank captures well the difference between popular and niche objects. The proposed algorithm p...
متن کاملTop Rank Optimization in Linear Time
Bipartite ranking aims to learn a real-valued ranking function that orders positive instances before negative instances. Recent efforts of bipartite ranking are focused on optimizing ranking accuracy at the top of the ranked list. Most existing approaches are either to optimize task specific metrics or to extend the ranking loss by emphasizing more on the error associated with the top ranked in...
متن کاملTop-N Recommendation with Novel Rank Approximation
The importance of accurate recommender systems has been widely recognized by academia and industry. However, the recommendation quality is still rather low. Recently, a linear sparse and low-rank representation of the user-item matrix has been applied to produce Top-N recommendations. This approach uses the nuclear norm as a convex relaxation for the rank function and has achieved better recomm...
متن کاملRANK-AWARE QUERY PROCESSING AND OPTIMIZATION A Thesis
Ilyas, Ihab F. Ph.D., Purdue University, August, 2004. Rank-aware Query Processing and Optimization. Major Professors: Ahmed K. Elmagarmid and Walid G. Aref. This dissertation focuses on supporting ranking in relational database systems through a rank-aware query processing and optimization framework. We introduce ranking algorithms and operators to be adopted by current relational query engine...
متن کاملA Comparative Study of the Defense of Nursing PhD Thesis in Iran and Top United States Universities
Background : The most important event in the doctoral course is the completion and defense of the dissertation, which leads to learning and improving the necessary skills to conduct research and improve performance in the field. Evaluating a doctoral dissertation defense program helps to identify the strengths and weaknesses of this process. Therefore, this comparative study has investigated th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Physics
سال: 2006
ISSN: 1745-2473,1745-2481
DOI: 10.1038/nphys324