Literatur zur Informationserschließung

Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.

© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 04. Juni 2021)

Suchergebnisse

• 1
  Li, H. ; Wu, H. ; Li, D. ; Lin, S. ; Su, Z. ; Luo, X.: PSI: A probabilistic semantic interpretable framework for fine-grained image ranking.
  In: Journal of the Association for Information Science and Technology. 69(2018) no.12, S.1488-1501.
  
  Abstract: Image Ranking is one of the key problems in information science research area. However, most current methods focus on increasing the performance, leaving the semantic gap problem, which refers to the learned ranking models are hard to be understood, remaining intact. Therefore, in this article, we aim at learning an interpretable ranking model to tackle the semantic gap in fine-grained image ranking. We propose to combine attribute-based representation and online passive-aggressive (PA) learning based ranking models to achieve this goal. Besides, considering the highly localized instances in fine-grained image ranking, we introduce a supervised constrained clustering method to gather class-balanced training instances for local PA-based models, and incorporate the learned local models into a unified probabilistic framework. Extensive experiments on the benchmark demonstrate that the proposed framework outperforms state-of-the-art methods in terms of accuracy and speed.
  
  Inhalt: https://onlinelibrary.wiley.com/doi/10.1002/asi.24068.
  
  Themenfeld: Retrievalalgorithmen
  Behandelte Form: Bilder
  
  
• 2
  Su, Z. ; Li, D. ; Li, H. ; Luo, X.: Boosting attribute recognition with latent topics by matrix factorization.
  In: Journal of the Association for Information Science and Technology. 68(2017) no.7, S.1737-1750.
  
  Abstract: Attribute-based approaches have recently attracted much attention in visual recognition tasks. These approaches describe images by using semantic attributes as the mid-level feature. However, low recognition accuracy becomes the biggest barrier that limits their practical applications. In this paper, we propose a novel framework termed Boosting Attribute Recognition (BAR) for the image recognition task. Our framework stems from matrix factorization, and can explore latent relationships from the aspect of attribute and image simultaneously. Furthermore, to apply our framework in large-scale visual recognition tasks, we present both offline and online learning implementation of the proposed framework. Extensive experiments on 3 data sets demonstrate that our framework achieves a sound accuracy of attribute recognition.
  
  Inhalt: Vgl.: http://onlinelibrary.wiley.com/doi/10.1002/asi.23827/full.
  
  Behandelte Form: Bilder