Softmax, Negative Sampling, and Noise Contrastive Estimation

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Softmax, Negative Sampling, and Noise Contrastive Estimation

\nabla_\theta J_\theta = \: \nabla_\theta \mathcal{E}(w) - \sum_{w_i \in V} P(w_i) \nabla_\theta \mathcal{E}(w_i)

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