计算机应用 ›› 2012, Vol. 32 ›› Issue (10): 2899-2903.DOI: 10.3724/SP.J.1087.2012.02899

• 人工智能 • 上一篇    下一篇

图像检索中结合文本信息的多示例原型选择及主动学习策略

李净1,2,郭洪禹1   

  1. 1. 上海海洋大学 信息学院,上海 201306
    2. 同济大学 电子与信息工程学院,上海 201804
  • 收稿日期:2012-04-17 修回日期:2012-05-20 发布日期:2012-10-23 出版日期:2012-10-01
  • 通讯作者: 李净
  • 作者简介:李净(1977-),女,山西阳泉人,副教授,博士,主要研究方向:图像检索、机器学习;郭洪禹(1974-),女,黑龙江齐齐哈尔人,讲师,博士研究生,主要研究方向:模式识别、语音处理。
  • 基金资助:
    国家863计划项目

Multi-instance prototype selection and active learning combined with textual information in image retrieval

LI Jing1,2,GUO Hong-yu1   

  1. 1. College of Information Technology, Shanghai Ocean University,Shanghai 201306, China
    2. School of Electronics and Information, Tongji University, Shanghai 201804, China
  • Received:2012-04-17 Revised:2012-05-20 Online:2012-10-23 Published:2012-10-01
  • Contact: LI Jing

摘要: 针对基于区域的图像检索系统检索精度不高的问题,提出结合文本信息的多示例原型选择算法和反馈标注机制。在示例原型选择时,首先使用文本信息进行正例拓展,然后通过估计负示例分布进行最初示例选择,最后通过示例更新和分类器学习的交替优化获得真的示例原型。相关反馈采用了多策略相结合的主动学习机制,通过信息值控制主动学习策略的自动切换,使系统能够自动选择当前最适合的主动学习策略。实验结果表明,该方法有效且性能优于其他方法。

关键词: 多示例学习, 文本信息, 示例原型, 主动学习, 相关反馈

Abstract: For the poor precision of region-based image retrieval, Multi-Instance Learning (MIL) prototype selection algorithm and feedback mechanism with reference to textual information were proposed. In the process of instance prototype selection, textual information was used to extend the positive examples, and negative example distribution was used to select initial instances and the iterative optimization process of instance updating and classifier training were used to obtain the true instance prototypes. In the process of relevance feedback, active learning with the combined learning methods was adopted. The switch of active learning strategy was controlled by the information value in the feedback process. The experimental results show that this algorithm is feasible, and the performance is superior to other MIL algorithms.

Key words: Multi-Instance Learning (MIL), textural information, instance prototype, active learning, relevance feedback