Nidhin Koshy Vaidhiyan

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We consider a visual search problem studied by Sripati and Olson where the objective is to identify an odd ball image embedded among multiple distractor images as quickly as possible. We model this visual search task as an active sequential hypothesis testing problem (ASHT problem). Chernoff in 1959 proposed a policy in which the expected delay to decision(More)
In this paper we consider the downlink of an OFDM cellular system. The objective is to maximise the system utility by means of fractional frequency reuse and interference planning. The problem is a joint scheduling and power allocation problem. Using gradient scheduling scheme, the above problem is transformed to a problem of maximising weighted sum-rate at(More)
Neuroscientists have recently shown that images that are difficult to find in visual search elicit similar patterns of firing across a population of recorded neurons. The <inline-formula> <tex-math notation="LaTeX">$L^{1}$ </tex-math></inline-formula> distance between firing rate vectors associated with two images was strongly correlated with the inverse of(More)
Active Sequential Hypothesis Testing (ASHT) is an extension of the classical sequential hypothesis testing problem with controls. Chernoff [1] proposed a policy called Procedure A and showed its asymptotic optimality as the cost of sampling was driven to zero. In this paper we study a further extension where we introduce costs for switching of actions. We(More)
This paper proposes a systematic approach to explore the search space of control parameters on an existing water network in a locality within Mysore, India, to see if continuous water supply can be provided to meet a nominal diurnal demand pattern. The control parameters are the initial states of the reservoirs at some reference hour and hourly maximum flow(More)
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