[UCI-Calit2] Event: Tues. Mar. 8 at Calit2

Sharon Henry sharon.henry at uci.edu
Mon Mar 7 12:00:36 PST 2016


Title: Fundamental Limits of Crowdsourcing

Speaker: Prof. Farshad Lahouti

Date: March 8, 2016, Tue.

Time: 11:00 AM

Venue: CALIT2 Room 3008

ABSTRACT

Digital crowdsourcing (CS) is a modern approach to perform certain large
projects using small contributions of a large crowd. In CS, a taskmaster
typically breaks down the project into small batches of tasks and
assigns them to so-called workers with imperfect skill levels. The
crowdsourcer then collects and analyzes the results for inference and
serving the purpose of the project. In this work, the CS problem, as a
human-in-the-loop computation problem, is modeled and analyzed in an
information theoretic rate-distortion framework. The purpose is to seek
ultimate performance bounds that one can achieve by any form of query
from the crowd and any decoding (inference) algorithm with a given
budget. The results also shed light on optimized strategies for the
design of crowdsourcing systems. We also present and analyze a query
scheme dubbed k-ary incidence coding.

SPEAKER'S BIOGRAPHY

Farshad Lahouti is currently a visiting professor of electrical
engineering at the California Institute of Technology (Caltech), where
he initiated the digital ventures design program. He received his B.Sc.
from the University of Tehran, Iran and his Ph.D. from the University of
Waterloo, Canada both in Electrical Engineering in 1997 and 2002,
respectively. In 2005, he joined the faculty of the School of Electrical
and Computer Engineering, University of Tehran, where he founded the
Center for Wireless Multimedia Communications. He also served as the
head of the Communications Engineering Department from 2008 to 2012. Dr
Lahouti is the recipient of the distinguished scientist award from Iran
Nation Academy of Sciences in 2014. His current research interests are
coding and information theory, signal processing and communication
theory with applications to wireless networks, cyber-physical systems
and man-machine symbiosis, and biological and neuronal networks.
Information on his recent works can be found here:
http://www.its.caltech.edu/~lahouti<http://www.its.caltech.edu/%7Elahouti>.


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