Urvashi Oswal

Urvashi Oswal
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Urvashi Oswal
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Computer Science - Learning (2)
 
Statistics - Machine Learning (2)
 
Statistics - Applications (1)
 
Computer Science - Data Structures and Algorithms (1)
 
Computer Science - Distributed; Parallel; and Cluster Computing (1)

Publications Authored By Urvashi Oswal

A common problem in large-scale data analysis is to approximate a matrix using a combination of specifically sampled rows and columns, known as CUR decomposition. Unfortunately, in many real-world environments, the ability to sample specific individual rows or columns of the matrix is limited by either system constraints or cost. In this paper, we consider matrix approximation by sampling predefined blocks of columns (or rows) from the matrix. Read More

The measurement and analysis of Electrodermal Activity (EDA) offers applications in diverse areas ranging from market research, to seizure detection, to human stress analysis. Unfortunately, the analysis of EDA signals is made difficult by the superposition of numerous components which can obscure the signal information related to a user's response to a stimulus. We show how simple pre-processing followed by a novel compressed sensing based decomposition can mitigate the effects of the undesired noise components and help reveal the underlying physiological signal. Read More