A hierarchical multi-criteria sorting approach for recommender systems
A hierarchical multi-criteria sorting approach for recommender systems
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DOI：
10.1007/s10844-015-0362-7
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发表时间：
2015-05
影响因子：
3.4
通讯作者：
Luis Del Vasto-Terrientes;A. Valls;Piotr Zielniewicz;Joan Borràs
中科院分区：
文献类型：
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作者：
Luis Del Vasto-Terrientes;A. Valls;Piotr Zielniewicz;Joan Borràs
分类问题是指为预定义的类别分配备选方案。在这项工作中，我们专注于有序分类，称为排序，其中预定义的类别表明某个用户的兴趣程度或替代方案的适用性。备选方案的分配基于多个相互冲突的标准。这种多标准排序方法对于旨在为每个用户找到最合适的替代方案的推荐系统来说特别有趣。首先，我们研究了elecre - tri - b排序方法，该方法遵循了基于比较备选方案评价和区分类别的轮廓限制的超排序方法。一些推荐系统的复杂性需要扩展经典的ELECTRE-TRI-B方法来管理标准集的分类组织。在本文中，我们考虑了一组层次结构形式的准则。这种层次结构中的中间标准对应于推荐过程的不同方面，例如内容、上下文或成本。在这些标准中，必须解决一个排序问题。因此，我们建议扩展ELECTRE-TRI-B来处理多个层次上的备选方案分配。提出了一种分级排序程序，称为electe - tri - b - h。其次，本文解释了将elecre - tri - b - h整合到一个名为goeno - turr的葡萄酒相关旅游活动推荐系统中。该系统是为加泰罗尼亚（西班牙）塔拉戈纳地区开发的，这是一个公认的葡萄酒和卡瓦酒生产地区。
Classification problems refer to the assignment of alternatives to predefined categories. In this work we focus on ordered classification, called sorting, in which the predefined categories indicate several degrees of interest or suitability of alternatives for a certain user. The assignment of alternatives is based on multiple conflicting criteria. This multi-criteria sorting approach is specially interesting for recommender systems aimed at finding the most suitable alternatives for each user. First, we study the ELECTRE-TRI-B sorting method, which follows the outranking approach based on comparing the evaluations of alternatives with the profile limits separating the categories. The complexity of some recommenders systems requires the extension of the classical ELECTRE-TRI-B method to manage a taxonomical organization of the set of criteria. In this paper we consider a set of criteria in the form of a hierarchy. The intermediate criteria in such a hierarchy correspond to different aspects of the recommendation procedure, such as content, context or cost. At each of these criteria, a sorting problem must be solved. Therefore, we propose extending ELECTRE-TRI-B to handle assignments of alternatives on several levels of the hierarchy. A hierarchical procedure for sorting is proposed, called ELECTRE-TRI-B-H. Secondly, the paper explains the integration of ELECTRE-TRI-B-H into a recommender system of touristic activities related to wine, called GoEno-Tur. This system is developed for the region of Tarragona, Catalonia (Spain), which is a well-recognized area of wine and cava production.