Pseudo relevance feedback with incremental learning for high level feature detection
Pseudo Relevance Feedback (PRF) has shown effective performance in information retrieval, but it has seldom been applied in the area of high level feature detection (HLF). In this paper, we explicitly propose to introduce PRF into HLF. Our contributions mainly lie in two-fold: (1) proposing three novel PRF approaches to extract pseudo positive samples, i.e., Nearest-Neighbor (NN) based PRF, Score-Evaluation (SE) based PRF and Multi-Classifier Decision (MCD) based PRF; (2) utilizing incremental learning to reduce the re-training time. We evaluate our approaches on the benchmark of TRECVID2008. Reported results have shown that MCD based approach outperforms the other two and obtain an excellent gain in average precision with respect to the baseline without PRF.