Abstract
This paper examines the problem of modelling continuous, positive data by finite mixtures of inverse Gaussian distributions using the minimum message length (MML) principle. We derive a message length expression for the inverse Gaussian distribution, and prove that the parameter estimator obtained by minimising this message length is superior to the regular maximum likelihood estimator in terms of Kullback–Leibler divergence. Experiments on real data demonstrate the potential benefits of using inverse Gaussian mixture models for modelling continuous, positive data, particularly when the data is concentrated close to the origin or exhibits a strong positive skew.
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Schmidt, D.F., Makalic, E. (2012). Minimum Message Length Inference and Mixture Modelling of Inverse Gaussian Distributions. In: Thielscher, M., Zhang, D. (eds) AI 2012: Advances in Artificial Intelligence. AI 2012. Lecture Notes in Computer Science(), vol 7691. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35101-3_57
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DOI: https://doi.org/10.1007/978-3-642-35101-3_57
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-35100-6
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