Jianwei Hu

Jianwei Hu
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Jianwei Hu

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Statistics - Methodology (2)
Physics - Physics and Society (1)
Computer Science - Computation and Language (1)
Statistics - Theory (1)
Mathematics - Statistics (1)

Publications Authored By Jianwei Hu

The stochastic block model is widely used for detecting community structures in network data. How to test the goodness-of-fit of the model is one of the fundamental problems and has gained growing interests in recent years. In this paper, we propose a new goodness-of-fit test based on the maximum entry of the centered and re-scaled observed adjacency matrix for the stochastic block model in which the number of communities can be allowed to grow linearly with the number of nodes ignoring a logarithm factor. Read More

Estimating the number of communities is one of the fundamental problems in the stochastic block model. We re-examine the Bayesian paradigm for stochastic block models and propose a "corrected Bayesian information criterion", to decide the block number and show that the produced estimator is consistent. The novel penalty function improves those used in Wang and Bickel (2016) and Saldana, Yu and Feng (2016) which tend to underestimate and overestimate the block number, respectively. Read More

Naming game simulates the process of naming a single object by a single word, in which a population of communicating agents can reach global consensus asymptotically through iteratively pair-wise conversations. In this paper, we propose an extension of the single-word naming game, to a multi-word naming game (MWNG), which simulates the naming game process when agents name an object by a sentence (i.e. Read More