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2015


Gaussian Process Optimization for Self-Tuning Control
Gaussian Process Optimization for Self-Tuning Control

Marco, A.

Polytechnic University of Catalonia (BarcelonaTech), October 2015 (mastersthesis)

am ics

PDF Project Page [BibTex]

2015


PDF Project Page [BibTex]


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Adaptive and Learning Concepts in Hydraulic Force Control

Doerr, A.

University of Stuttgart, September 2015 (mastersthesis)

am ics

[BibTex]

[BibTex]


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Policy Search for Imitation Learning

Doerr, A.

University of Stuttgart, January 2015 (thesis)

am ics

link (url) Project Page [BibTex]

link (url) Project Page [BibTex]


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Model-Based Strategy Selection Learning

Lieder, F., Griffiths, T. L.

The 2nd Multidisciplinary Conference on Reinforcement Learning and Decision Making, 2015 (article)

Abstract
Humans possess a repertoire of decision strategies. This raises the question how we decide how to decide. Behavioral experiments suggest that the answer includes metacognitive reinforcement learning: rewards reinforce not only our behavior but also the cognitive processes that lead to it. Previous theories of strategy selection, namely SSL and RELACS, assumed that model-free reinforcement learning identifies the cognitive strategy that works best on average across all problems in the environment. Here we explore the alternative: model-based reinforcement learning about how the differential effectiveness of cognitive strategies depends on the features of individual problems. Our theory posits that people learn a predictive model of each strategy’s accuracy and execution time and choose strategies according to their predicted speed-accuracy tradeoff for the problem to be solved. We evaluate our theory against previous accounts by fitting published data on multi-attribute decision making, conducting a novel experiment, and demonstrating that our theory can account for people’s adaptive flexibility in risky choice. We find that while SSL and RELACS are sufficient to explain people’s ability to adapt to a homogeneous environment in which all decision problems are of the same type, model-based strategy selection learning can also explain people’s ability to adapt to heterogeneous environments and flexibly switch to a different decision-strategy when the situation changes.

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link (url) Project Page [BibTex]

link (url) Project Page [BibTex]


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The optimism bias may support rational action

Lieder, F., Goel, S., Kwan, R., Griffiths, T. L.

NIPS 2015 Workshop on Bounded Optimality and Rational Metareasoning, 2015 (article)

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[BibTex]

[BibTex]


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Rational use of cognitive resources: Levels of analysis between the computational and the algorithmic

Griffiths, T. L., Lieder, F., Goodman, N. D.

Topics in Cognitive Science, 7(2):217-229, Wiley, 2015 (article)

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[BibTex]

[BibTex]

2006


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Die Effektivität von schriftlichen und graphischen Warnhinweisen auf Zigarettenschachteln

Petersen, L., Lieder, F.

Zeitschrift für Sozialpsychologie, 37(4):245-258, Verlag Hans Huber, 2006 (article)

Abstract
In der vorliegenden Studie wurde die Effektivität von furchterregenden Warnhinweisen bei jugendlichen Rauchern und Raucherinnen analysiert. 336 Raucher/-innen (Durchschnittsalter: 15 Jahre) wurden schriftliche oder graphische Warnhinweise auf Zigarettenpackungen präsentiert (Experimentalbedingungen; n = 96, n = 119), oder sie erhielten keine Warnhinweise (Kontrollbedingung; n = 94). Anschließend wurden die Modellfaktoren des revidierten Modells der Schutzmotivation (Arthur & Quester, 2004) erhoben. Die Ergebnisse stützen die Hypothese, dass die Faktoren «Schweregrad der Schädigung» und «Wahrscheinlichkeit der Schädigung» die Verhaltenswahrscheinlichkeit, weniger oder leichtere Zigaretten zu rauchen, vermittelt über den Mediator «Furcht» beeinflussen. Die Verhaltenswahrscheinlichkeit wurde dagegen nicht von den drei experimentellen Bedingungen beeinflusst. Auch konnten die Faktoren «Handlungswirksamkeitserwartungen» und «Selbstwirksamkeitserwartungen» nicht als Moderatoren des Zusammenhangs zwischen Furcht und Verhaltenswahrscheinlichkeit bestätigt werden.

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DOI [BibTex]

2006


DOI [BibTex]