**Dr Thomas ****Lidbetter**

Visiting Fellow

Department of Mathematics

London School of Economics

Houghton
Street, London WC2A 2AE, United Kingdom

E-mail: t.r.lidbetter@lse.ac.uk

I am
also an assistant professor in the Department of Management Science
and Information Systems in Rutgers
Business School.

**Research Interests **

Search theory and algorithms, game theory, discrete optimisation, scheduling, mathematical biology.

**Awards**

2016 LSE
Teaching and Learning Centre Teaching Prize

2013 Doctoral Dissertation Award for the most distinguished body of research leading to a doctorate in the field of Operational Research, from UK OR Society

2013 Mathematics Class Teacher Prize, LSE Department of Mathematics

**Education**

2009-2013, PhD in Department of Mathematics,
LSE

PhD supervisor: Steve Alpern

Thesis: Hide-and-seek
and other Search Games

2007-2009, MSc in Operational Research, LSE

Dissertation: Using data mining techniques to analyse a large financial dataset

2004-2005, MMath in Mathematics, University of Cambridge

2001-2004, MA in Mathematics, University of
Cambridge

**Working papers**

Lidbetter, T. and Lin, K. Searching for Multiple Objects in
Multiple Locations (in review)

Bonato, A. and Lidbetter,
T. Bounds on the Burning Numbers
of Spiders and Path-Forests (in review)

Alpern, S., Lidbetter, T. and Papadaki, K. Periodic
Patrols on the Line and Other Networks (in review)

Hellerstein, L. and Lidbetter, T. An
Algorithmic Approach to Search Games: Finding Solutions Using Best Response
Oracles (in review)

Alpern, S. and Lidbetter,
T. Constant Factor Approximate
solutions for Expanding Search on General Networks (in review)

Fokkink, R., Lidbetter T. and Végh, L. Submodular
Search is Scheduling (in review)

Angelopoulos, S., Dürr,
C. and Lidbetter, T. The
expanding search ratio of a graph (in review)

**Journal Articles**

Lidbetter, T. (2017) On the Approximation Ratio of the
Random Chinese Postman Tour for Network Search, *European Journal of Operational Research* 263(3):782-788

Papadaki, K., Alpern, S., Lidbetter,
T. and Morton, A. (2016) Patrolling a Border, *Operations Research* 64(6):1256-1269

Csóka, E. and Lidbetter,
T. (2016) The solution to an open problem for a caching game. *Naval Research Logistics *63(1):23-31

Lidbetter, T. (2015) A
caching game with infinitely divisible hidden material. *SIAM Journal on Control and
Optimization* 52(5):3040-3056

Alpern, S. and Lidbetter,
T. (2015) Optimal
Trade-Off Between Speed and Acuity When Searching for a Small Object. *Operations Research*
63(1):122-133

Alpern, S. and Lidbetter,
T. (2014) Searching
a Variable Speed Network. *Mathematics
of Operations Research*, 39(3):697-711

Lidbetter, T. (2013) Search
Games with Multiple Hidden Objects. *SIAM Journal on Control and Optimization* 51(4):3056–3074

Alpern, S. and Lidbetter, T. (2013) Mining
Coal or Finding Terrorists: The Expanding Search Paradigm. *Operations
Research*, 61(2):265-279

Alpern, S., Fokkink,
R., Lidbetter, T. and Clayton, N. (2012) A Search
Game model of the Scatter Hoarder's problem**.****
***Journal of the Royal Society Interface*, 9(70):869-879

**Book Chapters**

Lidbetter, T. (2013)
*Search Games for an Immobile Hider*. Fokkink, R. et al
(ed.) Search Theory: A Game Theoretic Approach

**Conference
Proceedings**

Alpern, S., Lidbetter,
T., Morton, A., Papadaki, K. Patrolling a Pipeline
(2016) In *International Conference on
Decision and Game Theory for Security 2016, *129-138, Springer International
Publishing.

Angelopoulos S., Dürr, C. and Lidbetter, T. (2016) The expanding
search ratio of a graph, The 33rd International Symposium on
Theoretical Aspects of Computer Science (STACS), 2016.

Alpern, S., Fokkink, R., Op Den Kelder,
J. and Lidbetter, T. (2010) Disperse or unite? A mathematical model of coordinated attack. In *Decision and Game Theory for Security -
First International Conference, GameSec 2010*,
Berlin, Germany, November 22-23, 2010. Proceedings; 01/2010

**Previous employment**

2013-2016, LSE Fellow

2011-2013, Graduate teaching assistant, LSE

2009-2011, Operational Research Analyst, Home Office (UK Civil Service)