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Non-liD Recommender Systems: A Review and Framework of Recommendation Paradigm Shifting 被引量:7
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作者 longbing cao 《Engineering》 SCIE EI 2016年第2期212-224,共13页
虽然推荐系统在我们的生活、学习、工作和娱乐中扮演着越来越重要的角色,但是很多时候我们收到的推荐都是不相关的、重复的,或者包含不感兴趣的产品和服务。这些差的推荐系统产生的原因来源于一个本征假设:传统的理论和推荐系统认为用... 虽然推荐系统在我们的生活、学习、工作和娱乐中扮演着越来越重要的角色,但是很多时候我们收到的推荐都是不相关的、重复的,或者包含不感兴趣的产品和服务。这些差的推荐系统产生的原因来源于一个本征假设:传统的理论和推荐系统认为用户和物品是独立同分布的(IID)。另一个明显的现象是,虽然投入了很多的精力模拟用户或者物品的特殊属性,但用户和物品的总体属性及它们之间的非独立同分布性(non-IID)被忽略了。本文先讨论了推荐系统的非独立同分布性,紧接着介绍了非独立同分布性原理,目的是从耦合和异构性的角度来深入阐述传统的推荐系统的固有本质。这种非独立同分布推荐系统引起了传统推荐系统范式的转化——从独立同分布向非独立同分布进行转化,希望能够形成高效的、相关性高的、个人订制和可操作的推荐系统。这种系统创造了令人兴奋的能够解决包含冷启动、以稀疏数据为基础、跨域、基于群组信息和欺诈攻击等各种复杂情况的新的研究方向和解决方案。 展开更多
关键词 推荐系统 框架 独立同分布 用户 异质性 联轴器 个性化 冷启动
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Novel Apriori-Based Multi-Label Learning Algorithm by Exploiting Coupled Label Relationship 被引量:1
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作者 Zhenwu Wang longbing cao 《Journal of Beijing Institute of Technology》 EI CAS 2017年第2期206-214,共9页
It is a key challenge to exploit the label coupling relationship in multi-label classification(MLC)problems.Most previous work focused on label pairwise relations,in which generally only global statistical information... It is a key challenge to exploit the label coupling relationship in multi-label classification(MLC)problems.Most previous work focused on label pairwise relations,in which generally only global statistical information is used to analyze the coupled label relationship.In this work,firstly Bayesian and hypothesis testing methods are applied to predict the label set size of testing samples within their k nearest neighbor samples,which combines global and local statistical information,and then apriori algorithm is used to mine the label coupling relationship among multiple labels rather than pairwise labels,which can exploit the label coupling relations more accurately and comprehensively.The experimental results on text,biology and audio datasets shown that,compared with the state-of-the-art algorithm,the proposed algorithm can obtain better performance on 5 common criteria. 展开更多
关键词 multi-label classification hypothesis testing k nearest neighbor apriori algorithm label coupling
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非独立同分布推荐系统:推荐范式转换的综述和框架
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作者 longbing cao 《Engineering》 SCIE EI CAS 2016年第2期229-243,共15页
虽然推荐系统在我们的生活、学习、工作和娱乐中扮演着越来越重要的角色,但是很多时候我们收到的推荐都是不相关的、重复的,或者包含不感兴趣的产品和服务。这些差的推荐系统产生的原因来源于一个本征假设:传统的理论和推荐系统认为用... 虽然推荐系统在我们的生活、学习、工作和娱乐中扮演着越来越重要的角色,但是很多时候我们收到的推荐都是不相关的、重复的,或者包含不感兴趣的产品和服务。这些差的推荐系统产生的原因来源于一个本征假设:传统的理论和推荐系统认为用户和物品是独立同分布的(IID)。另一个明显的现象是,虽然投入了很多的精力模拟用户或者物品的特殊属性,但用户和物品的总体属性及它们之间的非独立同分布性(non-IID)被忽略了。本文先讨论了推荐系统的非独立同分布性,紧接着介绍了非独立同分布性原理,目的是从耦合和异构性的角度来深入阐述传统的推荐系统的固有本质。这种非独立同分布推荐系统引起了传统推荐系统范式的转化——从独立同分布向非独立同分布进行转化,希望能够形成高效的、相关性高的、个人订制和可操作的推荐系统。这种系统创造了令人兴奋的能够解决包含冷启动、以稀疏数据为基础、跨域、基于群组信息和欺诈攻击等各种复杂情况的新的研究方向和解决方案。 展开更多
关键词 独立同分布 非独立同分布 异构性 关系耦合 耦合学习 关系学习 独立同分布学习 非独立同分布学习 推荐系统 推荐 非独立同分布推荐
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Coupled Attribute Similarity Learning on Categorical Data for Multi-Label Classification
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作者 Zhenwu Wang longbing cao 《Journal of Beijing Institute of Technology》 EI CAS 2017年第3期404-410,共7页
In this paper a novel coupled attribute similarity learning method is proposed with the basis on the multi-label categorical data(CASonMLCD).The CASonMLCD method not only computes the correlations between different at... In this paper a novel coupled attribute similarity learning method is proposed with the basis on the multi-label categorical data(CASonMLCD).The CASonMLCD method not only computes the correlations between different attributes and multi-label sets using information gain,which can be regarded as the important degree of each attribute in the attribute learning method,but also further analyzes the intra-coupled and inter-coupled interactions between an attribute value pair for different attributes and multiple labels.The paper compared the CASonMLCD method with the OF distance and Jaccard similarity,which is based on the MLKNN algorithm according to 5common evaluation criteria.The experiment results demonstrated that the CASonMLCD method can mine the similarity relationship more accurately and comprehensively,it can obtain better performance than compared methods. 展开更多
关键词 COUPLED SIMILARITY MULTI-LABEL categorical data CORRELATIONS
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Non-IID Recommender Systems: A Review and Framework of Recommendation Paradigm Shifting 被引量:1
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作者 longbing cao 《工程(英文)》 2016年第2期212-224,229-243,共28页
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Classification by ALH-Fast Algorithm
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作者 Tao Yang Vojislav Kecman longbing cao 《Tsinghua Science and Technology》 SCIE EI CAS 2010年第3期275-280,共6页
The adaptive local hyperplane (ALH) algorithm is a very recently proposed classifier, which has been shown to perform better than many other benchmarking classifiers including support vector machine (SVM), K-nearest n... The adaptive local hyperplane (ALH) algorithm is a very recently proposed classifier, which has been shown to perform better than many other benchmarking classifiers including support vector machine (SVM), K-nearest neighbor (KNN), linear discriminant analysis (LDA), and K-local hyperplane distance nearest neighbor (HKNN) algorithms. Although the ALH algorithm is well formulated and despite the fact that it performs well in practice, its scalability over a very large data set is limited due to the online distance computations associated with all training instances. In this paper, a novel algorithm, called ALH-Fast and obtained by combining the classification tree algorithm and the ALH, is proposed to reduce the computational load of the ALH algorithm. The experiment results on two large data sets show that the ALH-Fast algorithm is both much faster and more accurate than the ALH algorithm. 展开更多
关键词 快速算法 分类器 线性判别分析 距离计算 支持向量机 可扩展性 超平面 数据集
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