Archive for the ‘argumentation’ Category

Psychological Studies of Policy Reasoning

Saturday, October 27th, 2012

The New York Times had an article on the difficulties that the public has to understand complex policy proposals – I’m Right (For Some Reason). The points in the article relate directly to the research I’ve been doing at Liverpool on the IMPACT Project, for we decompose a policy proposal into its constituent parts for examination and improved understanding. See our tool live: Structured Consultation Tool

Policy proposals are often presented in an encapsulated form (a sound bite). And those receiving it presume that they understand it, the illusion of explanatory depth discussed in a recent article by Frank Keil (a psychology professor at Cornell when and where I was a Linguistics PhD student). This is the illusion where people believe they understand a complex phenomena with greater precision, coherence, and depth than they actually do; they overestimate their understanding. To philosophers, this is hardly a new phenomena, but showing it experimentally is a new result.

In research about public policy, the NY Times authors, Sloman and Fernbach, describe experiments where people state a position and then had to justify it. The results showed that participants softened their views as a result, for their efforts to justify it highlighted the limits of their understanding. Rather than statements of policy proposals, they suggest:

Instead, we voters need to be more mindful that issues are complicated and challenge ourselves to break down the policy proposals on both sides into their component parts. We have to then imagine how these ideas would work in the real world — and then make a choice: to either moderate our positions on policies we don’t really understand, as research suggests we will, or try to improve our understanding.

Breaking down policy proposals into component parts for further investigation and understanding is exactly what we’ve been doing in the IMPACT Project.

This article and the references to further literature are not only intrinsically interesting, but they also give me additional ways of thinking about these issues and an evaluative paradigm for our tools.

Presentation at Conference on Agreement Technologies

Sunday, October 21st, 2012

I participated in the 1st International Conference on Agreement Technologies in Dubrovnik, Croatia.

The talk, Arguing from a Point of View, addresses the issue of extracting argumentative information from web-based information sources such as consumer product reviews or recommendations. Jodi Schneider is a co-author. The paper is available on the previous post. Some of the topics are developed further in our paper at SWAIE 2012.

Shortlink to this page.

By Adam Wyner

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.

Paper at SWAIE 2012

Sunday, September 23rd, 2012

A paper with Jodi Schneider accepted to 1st Workshop on Semantic Web and Information Extraction (SWAIE 2012) held at the 18th Conference on Knowledge Engineering and Knowledge Management, Galway, Ireland.

Identifying Consumers’ Arguments in Text
Jodi Schneider and Adam Wyner

Abstract
Product reviews are a corpus of textual data on consumer opinions. While reviews can be sorted by rating, there is limited support to search in the corpus for statements about particular topics, e.g. properties of a product. Moreover, where opinions are justified or criticised, statements in the corpus indicate arguments and counterarguments. Explicitly structuring these statements into arguments could help better understand customers’ disposition towards a product. We present a semi-automated, rule-based information extraction tool to support the identification of statements and arguments in a corpus, using: argumentation schemes; user, domain, and sentiment terminology; and discourse indicators.

Bibtex
@INPROCEEDINGS{WynerSchneiderSWAIE2012,
author = {Jodi Schneider and Adam Wyner},
title = {Identifying Consumers’ Arguments in Text},
booktitle = {Proceedings of the 1st Workshop on Semantic Web and Information Extraction (SWAIE 2012)},
year = {2012},
address = {Galway, Ireland},
note = {To appear}}

Shortlink to this page.

By Adam Wyner

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.

Video Lecture on Agreement Technologies and Argumentation

Sunday, September 23rd, 2012

I participated in a recent Agreement Technologies (AT) meeting in June 2012 in Valencia, Spain; AT is a European Cooperation in Science and Technology funded organisation. As part of a new book with associated videolectures, I presented the videolecture Agreement Technologies and Argumentation, written by Sanjay Modgil and Francesca Toni, which has a runtime of just under 10 minutes. The other videolectures are good introductions to other areas of AT.

Presentation at COMMA 2012

Tuesday, September 11th, 2012

Jodi Schneider and I have a short paper at the Computational Models of Argument 2012 conference. The slides are here:

Semi-Automated Argumentation Analysis of Online Product Reviews

Shortlink to this page.

By Adam Wyner

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.

Presentations at CMNA 2012 and RuleML 2012

Tuesday, August 28th, 2012

I have gave a talk about my paper at the ECAI workshop on Computational Models of Natural Argumentation 2012 and also presented an invited talk at the RuleML 2012 conference. The PDFs of these talks are below.

Questions, arguments, and natural language semantics

Translating Rules in Natural Language to RuleML

Shortlink to this page.

By Adam Wyner

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.

Papers at CMNA 2012 and AT 2012

Tuesday, August 7th, 2012

Recent papers at two conferences. One is in the 12th workshop on Computational Models of Natural Argument (CMNA 2012), Montpellier, France. A second paper is in the 1st International Conference on Agreement Technologies (AT 2012), Dubrovnik, Croatia.

Questions, arguments, and natural language semantics
Adam Wyner

Abstract
Computational models of argumentation can be understood to bridge between human and automated reasoning. Argumentation schemes represent stereotypical, defeasible reasoning patterns. Critical questions are associated with argumentation schemes and are said to attack arguments. The paper highlights several issues with the current understanding of critical questions in argumentation. It provides a formal semantics for questions, an approach to instantiated argumentation schemes, and shows how the semantics of questions clarifies the issues. In this approach, questions do not attack schemes, though answers to questions might.

Bibtex
@INPROCEEDINGS{WynerCMNA2012,
author = {Adam Wyner},
title = {Questions, Arguments, and Natural Language Semantics},
booktitle = {Proceedings of the 12th Workshop on Computational Models of Natural Argumentation ({CMNA} 2012)},
year = {2012},
address = {Montpellier, France},
note = {To appear}}

Arguing from a Point of View
Adam Wyner and Jodie Schneider

Abstract
Evaluative statements, where some entity has a qualitative attribute, appear widespread in blogs, political discussions, and consumer websites. Such expressions can occur in argumentative settings, where they are the conclusion of an argument. Whether the argument holds depends on a the premises that express a user’s point of view. Where different users disagree, arguments may arise. There are several ways to represent users, e.g. by values and other parameters. The paper proposes models and argumentation schemes for evaluative expressions, where the arguments and attacks between arguments are relative to a user’s model.

Bibtex
@INPROCEEDINGS{WynerSchneider2012AT,
author = {Adam Wyner and Jodi Schneider},
title = {Arguing from a Point of View},
booktitle = {Proceedings of the First International Conference on Agreement Technologies},
year = {2012},
address = {Dubrovnick, Croatia},
note = {To appear}}

Shortlink to this page.

By Adam Wyner

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.

Presentation on Argument Mining at the London Text Analytic Meetup

Tuesday, August 7th, 2012

On July 13 at Fizzback HQ in London, I presented a talk at the London Text Analytic Meetup on Argument Mining. The slides are available at the link below.

Comments on Natural Language and Argumentation
Adam Wyner

Abstract
Opinion and sentiment mining of web-based content are widely done to find out the views of users about consumer goods or politics, but the techniques rely on accrual, do not identify justification, and do not provide structure to support reasoning. Argument mining provides an articulated view of web-based content, identifying justifications, counterpoints, and structure for reasoning.

Two other papers were presented at the meetup.

One by Francesca Toni and Lucas Carstens from Imperial College:

Sentiment Analysis is concerned with differentiating opinionated text from factual text and, in the case of opinionated text, determine its polarity. With this paper, we present A-SVM, a system that tackles the discrimination of opinionated text from non-opinionated text with the help of Support Vector Machines (SVM). In a two-step process, SVM classifications are improved via arguments, acquired by means of a user feedback mechanism. The system has been used to investigate the merits of approaching Sentiment Analysis in a multi faceted manner by comparing straightforward Machine Learning techniques with this multimodal system architecture. All evaluations were executed using a purpose-built corpus of annotated text and its classification performance was compared to that of SVM. The classification of a test set of approximately 12,000 words yielded an increase in classification precision of 5.6%.

Another paper by Francesca Toni and Valentinos Evripidou from Imperial College

We describe a new argumentation method for analysing opinion exchanges between on-line users aiding them to draw informative, structured and meaningful information. Our method combines different factors, such as social support drawn from votes and attacking/supporting relations between opinions interpreted as abstract arguments. We show a prototype web application which puts into use this method to offer anintelligent business directory allowing users to engage in debate and aid them to extract the dominant, emerging public opinion.

By Adam Wyner

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.

Video about the Social Problem of Inductive Arguments

Saturday, July 28th, 2012

A nice animated cartoon about the social problem of inductive arguments – picking up, then passing along information. This is a youtube video, so there is an ad popup. Best watched as a loop to appreciate the full point:

Dead Cert – BBC Podcast about Uncertainty in Public Discourse

Sunday, July 22nd, 2012

BBC Radio 4 has a 30 minute radio show about uncertainty in public discourse. Several of the points were well made and relevant to key lines of research that I do (argumentation, policy-making), so I thought it worthwhile to give a link here.

The main questions that caught my attention were:

  • How do we (public, experts, and politicians) make public decisions where there is uncertainty?
  • How are problems and proposals presented by different organisations (politicians, experts, and journalists)?

All the content below is from the BBC. The link below should take you to the BBC site and start the presentation. However, there might be some restrictions on access from outside the UK.

- Adam

Certainty: is the lust for it a sin? And if so, should politics fear for its soul? Michael Blastland makes a plea for policy makers to be less sure of themselves in “Dead Cert”, originally broadcast on 6 November 2008.

http://www.bbc.co.uk/podcasts/series/analysis/all#playepisode21