Search Results for author: Mohamed A. Zahran

Found 2 papers, 0 papers with code

Contextual Unsupervised Outlier Detection in Sequences

no code implementations6 Nov 2021 Mohamed A. Zahran, Leonardo Teixeira, Vinayak Rao, Bruno Ribeiro

This work proposes an unsupervised learning framework for trajectory (sequence) outlier detection that combines ranking tests with user sequence models.

Outlier Detection

Infinity Learning: Learning Markov Chains from Aggregate Steady-State Observations

no code implementations11 Feb 2020 Jianfei Gao, Mohamed A. Zahran, Amit Sheoran, Sonia Fahmy, Bruno Ribeiro

We consider the task of learning a parametric Continuous Time Markov Chain (CTMC) sequence model without examples of sequences, where the training data consists entirely of aggregate steady-state statistics.

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