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Why ADAGRAD Fails for Online Topic Modeling

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Figure

Figure 1: Illustration of ADAGRADADAGRAD’s problem. Ini-tially, the topic does not favor particular wordsover others, so the training algorithm incorrectlyincreases the parameters of bottom words
Figure 2: Experimental results on synthetic datasets. We vary the vocabulary sizeADAGRAD V, and the num-ber of documents D
Figure 3:Experimental results on real cor-Wikipedia,pora. Larger predictive likelihood is better

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