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Improving deep forest by ensemble pruning based on feature vectorization and quantum walks
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DOI：10.1007/s00500-020-05274-z.png)
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摘要
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Recently, a deep learning model, the deep forest (DF), was designed as an alternative to deep neural networks. Each cascade layer of the DF contains a set of random forests (RFs) with a large number of decision trees, some of which are of high redundancy and poor performance. To avoid the negative impacts of such decision trees, this paper proposes to optimize RFs in each cascade layer of the DF so as to realize a pruned deep forest (PDF) with higher performance and smaller ensemble size. In this paper, a new ordering-based ensemble pruning method is proposed based on feature vectorization and quantum walks. This method simultaneously considers the accuracy and the diversity of base classifiers, and it provides an integrated evaluation criterion for ordering base classifiers in the ensemble system. The effectiveness of the proposed method is verified by experiments and discussions.
Keyword:
Deep forest
Ensemble pruning
Feature vectorization
Quantum walks
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2.5
论文数:
1.0W
被引数:
2.1W
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