Sakyajit Bhattacharya

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Stroke is a major cause of mortality and long–term disability in the world. Predictive outcome models in stroke are valuable for personalized treatment, rehabilitation planning and in controlled clinical trials. In this paper we design a new model to predict outcome in the short-term, the putative therapeutic window for several treatments. Our(More)
Heterogeneous data with complex feature dependencies is common in real-world applications. Clustering algorithms for mixed – continuous and discrete valued – features often do not adequately model dependencies and are limited to modeling meta–Gaussian distributions. Copulas, that provide a modular parameterization of joint distributions, can model a variety(More)
An Acute Hypotensive Episode (AHE) is the sudden onset of a period of sustained low blood pressure and is one of the most critical conditions in Intensive Care Units (ICU). Without timely medical care, it can lead to irreversible organ damage and death. By identifying patients at risk for this complication, adequate medical intervention can save lives and(More)
Crowd workers exhibit varying work patterns, expertise, and quality leading to wide variability in the performance of crowdsourcing platforms. The onus of choosing a suitable platform to post tasks is mostly with the requester, often leading to poor guarantees and unmet requirements due to the dynamism in performance of crowd platforms. Towards this end, we(More)
We propose an online scheduling algorithm for posting crowdsourcing tasks which maximizes a novel metric called task viewership. This metric is computed using stochastic model based on coverage process and it measures the likelihood that a task is viewed by multiple crowd workers, which is correlated to the likelihood that it will be selected and completed.
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