基于多关系知识增强的开发者推荐算法  

A Developer Recommendation Algorithm Based on Multi-Relationship Knowledge Enhancement

作　　者：杜军威[1] 王昭哲 于旭[1] 胡强[1] 江峰[1] 巩敦卫 DU Jun-wei;WANG Zhao-zhe;YU Xu;HU Qiang;JIANG Feng;GONG Dun-wei(School of Information Science and Technology,Qingdao University of Science and Technology,Qingdao,Shandong 266061,China)

机构地区：[1]青岛科技大学信息科学技术学院,山东青岛266061

出　　处：《电子学报》2023年第11期3111-3119,共9页Acta Electronica Sinica

基　　金：国家自然科学基金(No.62172249,No.61973180);山东省自然科学基金(No.ZR2021MF092,No.ZR2022MF326);中央高校基本科研业务费(No.93K172022K01)。

摘　　要：近年来,随着众包平台的不断发展,信息过载问题日趋严重,任务难以及时找到可靠的开发者完成,为任务推荐合适的开发者变得至关重要.传统推荐方法存在两大挑战:一是任务和开发者的文本特征高度简练,传统推荐方法聚焦于表面文本信息,未发现其中包含的大量知识实体;二是任务具有一次性,导致显式交互数据极其稀疏.为了解决上述挑战,本文提出一种基于多关系知识增强的开发者推荐算法.对于一个任务和开发者,首先将他们包含的文本内容中的每个单词与知识图谱中的相关实体关联起来,用于丰富任务和开发者的信息表示.除直接相关联的实体外,还使用每个实体的上下文实体集合来提供更多的信息.然后,对于开发者本文使用多关系邻域聚合的方式增强其特征表示,并使用注意力模块区分开发者对任务的关注度.最终获得的用户和开发者的嵌入输入到深度神经网络中进行预测.在真实的Topcoder数据集上进行广泛的实验,结果表明,本文方法在正确率和序位倒数均值上相比于最佳对比方法平均提高11.7%和17.5%.In recent years,crowdsourcing software development has gradually become an emerging software development model.However,with the continuous development of crowdsourcing platforms,the problem of information overload has become increasingly serious.It has become crucial to recommend suitable developers for tasks that are difficult to find reliable developers to complete on time.Traditional recommendation methods face two major challenges:First,the text features of tasks and developers are highly concise.Traditional recommendation methods focus on surface text information and fail to discover the large amount of knowledge entities contained therein.Second,tasks are one-time and this results in extremely sparse explicit interaction data.To solve these challenges,we propose a developer recommendation algorithm based on multi-relational knowledge enhancement.We identify entities and contextual entities from text features and link the relationship between tasks and developers from a knowledge perspective,uncovering the deep preferences of developers.In addition,we treat developers'participation in registering,submitting,and winning tasks as different preferences.We assign different weights to the relationships between tasks and developers and employ an attention mechanism to refine the importance of these different relationships.Finally,we enhance developers'feature representation using multi-relational neighborhood aggregation.We conduct extensive experiments on the real-world Topcoder dataset,and the results show that our method outperforms the best baseline method by an average of 11.7%in accuracy and 17.5%in mean reciprocal rank.

关 键 词：开发者推荐 软件众包开发 多关系 知识图谱 图神经网络 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]