TAILIEUCHUNG - Báo cáo khoa học: "Ecological Evaluation of Persuasive Messages Using Google AdWords"

In recent years there has been a growing interest in crowdsourcing methodologies to be used in experimental research for NLP tasks. In particular, evaluation of systems and theories about persuasion is difficult to accommodate within existing frameworks. | Ecological Evaluation of Persuasive Messages Using Google AdWords Marco Guerini Trento-Rise Via Sommarive 18 Povo Trento Italy Carlo Strapparava FBK-Irst Via Sommarive 18 Povo Trento Italy strappa@ Oliviero Stock FBK-Irst Via Sommarive 18 Povo Trento Italy stock@ Abstract In recent years there has been a growing interest in crowdsourcing methodologies to be used in experimental research for NLP tasks. In particular evaluation of systems and theories about persuasion is difficult to accommodate within existing frameworks. In this paper we present a new cheap and fast methodology that allows fast experiment building and evaluation with fully-automated analysis at a low cost. The central idea is exploiting existing commercial tools for advertising on the web such as Google AdWords to measure message impact in an ecological setting. The paper includes a description of the approach tips for how to use AdWords for scientific research and results of pilot experiments on the impact of affective text variations which confirm the effectiveness of the approach. 1 Introduction In recent years there has been a growing interest in finding new cheap and fast methodologies to be used in experimental research for but not limited to NLP tasks. In particular approaches to NLP that rely on the use of web tools - for crowdsourcing long and tedious tasks - have emerged. Amazon Mechanical Turk for example has been used for collecting annotated data Snow et al. 2008 . However approaches a la Mechanical Turk might not be suitable for all tasks. In this paper we focus on evaluating systems and theories about persuasion see for example Fogg 2009 or the survey on persuasive NL generation studies in Guerini et al. 2011a . Measuring the 988 impact of a message is of paramount importance in this context for example how affective text variations can alter the persuasive impact of a message. The problem is that evaluation experiments represent a bottleneck .

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