Christopher X J. Jensen
Associate Professor, Pratt Institute

Working on a VUE concept map of the fieldTest simulation

Posted 22 Jun 2013 / 0

Jennifer Verdolin, Dylan Moore, and I created the fieldTest simulator several years ago. This individual-based simulation allows virtual animals with the potential to form social groups that defend territories to interact on landscapes containing different patterns and abundances of resources, and is part of my larger research into group territorial behavior. We presented our results at the 2009 Read More

A Major Post, Behavioral Ecology, Competition, Concept Mapping, Department of Mathematics & Science, Ecological Modeling, Group Territorial Behavior, Individual-based Models, Information Design, Spatially Explicit Modeling

A spatial version of the Traveler’s Dilemma allows cooperation to persist

Posted 23 Mar 2013 / 0

PLos ONE “Evolution of Cooperation in Spatial Traveler’s Dilemma Game“

A Minor Post, Cooperation, Game Theory, Reciprocity, Spatially Explicit Modeling

My review of Railsback and Grimm’s “Agent-based and individual-based modeling” textbook published in Ecology

Posted 22 Mar 2013 / 2

I am excited by the recent publication of my review of Agent-based and individual-based modeling: a practical introduction in the January issue of Ecology. The review, entitled “Individual-based modeling for the masses“, lauds this valuable textbook designed to support individual-based modeling courses. I expect the combination of this text and the very valuable NetLogo modeling Read More

A Major Post, Ecological Modeling, Individual-based Models, My publications, Spatially Explicit Modeling

Agent-based modeling instead of game theory: I agree!

Posted 20 Sep 2012 / 0

The Society Pages “Progressing from game theory to agent based modelling to simulate social emergence” This is a nice albeit pretty choppy explanation for why we should not listen to orthodox/traditional game theorists. The only argument I see missing here is that game theory relies on the assumption of a well-mixed population: even the Prisoner’s Read More

A Minor Post, Cooperation, Emergence, Evolutionary Modeling, Game Theory, Individual-based Models, Spatially Explicit Modeling, Web

ESA 2012 Thursday afternoon talks

Posted 10 Aug 2012 / 0

I spent Thursday afternoon once again hustling from one talk to another, with Organized Oral Session #47 (Universal Senescence? New Theories and Experimental Approaches Across the Tree of Life) being my primary focus. The writings of George C. Williams and his ingenious antagonistic pleiotropy hypothesis explaining aging have always fascinated me. Like a lot of Read More

A Major Post, Behavior, Conferences, Ecological Modeling, Ecological Society of America, Ecosystem Services, Freshwater Ecosystems, Individual-based Models, Parasitism, Phenotypic Plasticity, Ponds & Lakes, Predation, Senescence, Spatially Explicit Modeling, Sustainable Agriculture, Talks & Seminars, Tropical Forest

ESA 2012 Workshop #8, Getting off the Ground with Individual-Based Modeling: A Primer for Instructors and Researchers

Posted 05 Aug 2012 / 0

I got off to a running start at this year’s Ecological Society of America (ESA) annual meeting with a workshop orchestrated by Steven Railsback and Volker Grimm. Entitled “Getting off the Ground with Individual-Based Modeling: A Primer for Instructors and Researchers“, the workshop was a practical introduction to the material provided in their new textbook Agent-Based Read More

A Major Post, Conferences, Ecological Modeling, Ecological Society of America, Individual-based Models, Spatially Explicit Modeling, Talks & Seminars

I am finally diving into NetLogo!

Posted 15 Jul 2012 / 0

NetLogo I am reading the new-ish Railsback and Grimm book Agent-Based and Individual-Based Modeling: A Practical Introduction, and this book is finally compelling me to learn NetLogo. I am pretty excited about its potential for teaching and curious about whether I can use it for research.

A Minor Post, Evolutionary Modeling, Individual-based Models, Spatially Explicit Modeling

Steven Railsback and Volker Grimm offer new introduction to the process of agent- and individual-based modeling

Posted 27 Jan 2012 / 0

Princeton University Press “Agent-Based and Individual-Based Modeling: A Practical Introduction” by Steven Railsback and Volker Grimm

A Minor Post, Ecological Modeling, Individual-based Models, Spatially Explicit Modeling

Costly signalling not so costly in the presence of comrades

Posted 23 Sep 2011 / 0

This month’s issue of PLoS Computational Biology contained an interesting article entitled “Signalling and the Evolution of Cooperative Foraging in Dynamic Environments“. Authored by Colin J. Torney, Andrew Berdahl, Iain D. Couzin (all of Princeton University), the article seeks to understand the ecological conditions under which costly signaling can evolve. Many animals emit signals to Read More

Altruism, Articles, Cooperation, Game Theory, Group Selection, Individual-based Models, Modeling (General), Reciprocity, Spatially Explicit Modeling

Patterns in mussel beds may reflect interaction between individual behavior and emergent environmental patterns

Posted 09 Sep 2011 / 0

Mussel beds off of Polzeath, United Kingdom (photo by Andy F) Natural selection is often oversimplified as the effect of the outside environment on the survival and reproduction probability of individual organisms. In the end this perspective has some value: individual organisms either survive and reproduce or they do not. But along the way, an Read More

Behavioral Ecology, Competition, Cooperation, Emergence, Individual-based Models, Intertidal Zones, Population Growth, Spatially Explicit Modeling