Lp-Norm IDF for Large Scale Image Search

  title={Lp-Norm IDF for Large Scale Image Search},
  author={Liang Zheng and Shengjin Wang and Ziqiong Liu and Qi Tian},
  journal={2013 IEEE Conference on Computer Vision and Pattern Recognition},
The Inverse Document Frequency (IDF) is prevalently utilized in the Bag-of-Words based image search. The basic idea is to assign less weight to terms with high frequency, and vice versa. However, the estimation of visual word frequency is coarse and heuristic. Therefore, the effectiveness of the conventional IDF routine is marginal, and far from optimal. To tackle this problem, this paper introduces a novel IDF expression by the use of Lp-norm pooling technique. Carefully designed, the proposed… CONTINUE READING
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