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LCN2 Seminar Dr. João Dias Rodrigues

Dr. João Dias Rodrigues from the Leiden Institute of Environmental Sciences will give an LCN2 seminar on October 30th at 16:00 in room HL106, titled 'Entropy, inference and economic networks'.

In this talk I will present E. T. Jaynes' concept of entropy as an inference tool and clarify when and how entropy can be used in the study of complex networks. Entropy is a property which indicates the spread of a probability distribution and has two applications: it can be used to determine a prior distribution when information on constraints is available; and it can be used to infer constraints when the distribution is known. I will review and discuss applications of entropy to the study of the arrow of time, language, food webs and firm sizes, as well as to algorithms of image reconstruction and trade flow estimation and reconciliation. Some of these applications can be interpreted within Jaynes' framework while others cannot. To conclude, I will identify current theoretical and empirical challenges in the study of economic networks and suggest how entropy can help to overcome them. These problems stem from the arbitrary nature of classifications and the aggregation of official statistical trade data, which make the analysis scale-dependent. Entropy can be used to identify correlations among trade flows, trade-offs in the uncertainty of disaggregated data and estimate firm and transaction size distributions.

Preliminary LCN2 Seminar Schedule - 2015
March 27, 16:00-17:00, HL214
April 24, 16:00-17:00, HL214
May 29, 16:00-17:00, HL214
June 26, 16:00-17:00, HL214
September 25, 16:00-17:00, HL214
October 30, 16:00-17:00, HL106
November 27, 16:00-17:00, HL106
December 18, 16:00-17:00, HL214

Publ. 22-10-2015 12:32
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