5,678 research outputs found
Analyzing collaborative learning processes automatically
In this article we describe the emerging area of text classification research focused on the problem of collaborative learning process analysis both from a broad perspective and more specifically in terms of a publicly available tool set called TagHelper tools. Analyzing the variety of pedagogically valuable facets of learners’ interactions is a time consuming and effortful process. Improving automated analyses of such highly valued processes of collaborative learning by adapting and applying recent text classification technologies would make it a less arduous task to obtain insights from corpus data. This endeavor also holds the potential for enabling substantially improved on-line instruction both by providing teachers and facilitators with reports about the groups they are moderating and by triggering context sensitive collaborative learning support on an as-needed basis. In this article, we report on an interdisciplinary research project, which has been investigating the effectiveness of applying text classification technology to a large CSCL corpus that has been analyzed by human coders using a theory-based multidimensional coding scheme. We report promising results and include an in-depth discussion of important issues such as reliability, validity, and efficiency that should be considered when deciding on the appropriateness of adopting a new technology such as TagHelper tools. One major technical contribution of this work is a demonstration that an important piece of the work towards making text classification technology effective for this purpose is designing and building linguistic pattern detectors, otherwise known as features, that can be extracted reliably from texts and that have high predictive power for the categories of discourse actions that the CSCL community is interested in
Argumentation Mining in User-Generated Web Discourse
The goal of argumentation mining, an evolving research field in computational
linguistics, is to design methods capable of analyzing people's argumentation.
In this article, we go beyond the state of the art in several ways. (i) We deal
with actual Web data and take up the challenges given by the variety of
registers, multiple domains, and unrestricted noisy user-generated Web
discourse. (ii) We bridge the gap between normative argumentation theories and
argumentation phenomena encountered in actual data by adapting an argumentation
model tested in an extensive annotation study. (iii) We create a new gold
standard corpus (90k tokens in 340 documents) and experiment with several
machine learning methods to identify argument components. We offer the data,
source codes, and annotation guidelines to the community under free licenses.
Our findings show that argumentation mining in user-generated Web discourse is
a feasible but challenging task.Comment: Cite as: Habernal, I. & Gurevych, I. (2017). Argumentation Mining in
User-Generated Web Discourse. Computational Linguistics 43(1), pp. 125-17
Featuring, Detecting, and Visualizing Human Sentiment in Chinese Micro-Blog
2015-2016 > Academic research: refereed > Publication in refereed journa
Talking to the Empowered Consumer Dealing with the Shift of Power
The concept of the empowered consumer cannot be considered as a field of exact scientific
research yet. Nevertheless, it has become part of scholars’ interest and gains more and more
importance in the research of organisational relationships with customers. It is suggested that
two influencing criteria are especially at the forefront: The emergence of the Internet, which
effected that barriers to collect and to disseminate information across boundaries were
decisively reduced. As a consequence consumers could organise globally and collect and
exchange information and experiences about organisations and their products. Furthermore,
flexible interactivity between companies and consumers, but particularly from consumers to
consumers enable direct interaction changing many previously established rules of doing
business. Due to these new opportunities new business models developed and the proposition
is that intangible values such as reputation gained even more importance and influence
tangible outcomes.
Suggestions are that 1.), this concept links communication, corporate behaviour and
legitimacy of activities influencing reputation as a driver of value. 2.), reputation as a
corporate asset can be managed but it is beyond the pure control of an organisation. 3.),
reputation is part of public perception, which an organisation has to build, maintain and
expand depending on communicative abilities and willingness to accept consumers as a centre
of power. The following discussion will present Grunig et al.’s communication model
explaining changed organisational challenges. It is put forward as a framework for marketing
for times in which online opportunities added to the earlier b2b and b2c models c2c and P2P
considerations and architectures.
The annual studies of the market research institute puls undertaking regular representative
research among German consumers since November 2005 will present evidence for the
relationship of improved prices, which may be achieved, and the perception a firm possesses.
This paper deals mostly with German examples and data, but the hypothesis is that a) the
general situation in other Western countries is alike, but needs b) specific additional research,
since cultural differences are expected to have a considerable influence, especially when
criteria such as individualist and collectivist organisation of society and high and low context
communication styles are involved. Hence, the results of the same study in different countries
are therefore expected to present some variation.
Additionally, the Cluetrain Manifesto challenges corporate behaviour of those companies still
believing to have the ability to control information disseminated by and written about it.
Examples provided will support the hypothesis that powerful consumers may have significant
impact on organisational behaviour, decision-making and outcomes.
Keywords: Empowered Consumer Concept, Symmetric Two-way communication,
Reputation, c2c, P2
Data Mining in Electronic Commerce
Modern business is rushing toward e-commerce. If the transition is done
properly, it enables better management, new services, lower transaction costs
and better customer relations. Success depends on skilled information
technologists, among whom are statisticians. This paper focuses on some of the
contributions that statisticians are making to help change the business world,
especially through the development and application of data mining methods. This
is a very large area, and the topics we cover are chosen to avoid overlap with
other papers in this special issue, as well as to respect the limitations of
our expertise. Inevitably, electronic commerce has raised and is raising fresh
research problems in a very wide range of statistical areas, and we try to
emphasize those challenges.Comment: Published at http://dx.doi.org/10.1214/088342306000000204 in the
Statistical Science (http://www.imstat.org/sts/) by the Institute of
Mathematical Statistics (http://www.imstat.org
Role of sentiment classification in sentiment analysis: a survey
Through a survey of literature, the role of sentiment classification in sentiment analysis has been reviewed. The review identifies the research challenges involved in tackling sentiment classification. A total of 68 articles during 2015 – 2017 have been reviewed on six dimensions viz., sentiment classification, feature extraction, cross-lingual sentiment classification, cross-domain sentiment classification, lexica and corpora creation and multi-label sentiment classification. This study discusses the prominence and effects of sentiment classification in sentiment evaluation and a lot of further research needs to be done for productive results
CHORUS Deliverable 2.1: State of the Art on Multimedia Search Engines
Based on the information provided by European projects and national initiatives related to multimedia search as well as domains experts that participated in the CHORUS Think-thanks and workshops, this document reports on the state of the art related to multimedia content search from, a technical, and socio-economic perspective.
The technical perspective includes an up to date view on content based indexing and retrieval technologies, multimedia search in the context of mobile devices and peer-to-peer networks, and an overview of current evaluation and benchmark inititiatives to measure the performance of multimedia search engines.
From a socio-economic perspective we inventorize the impact and legal consequences of these technical advances and point out future directions of research
Exploring Strategic Organizational Engagement in Social Media: A Revelatory Case
There has been little theorizing in information systems (IS) or management literature to inform organizational strategies for social media engagement. Aral et al. (2013) lament the dearth of scholarly work focused on understanding organizations’ high-level social media strategies. In this research, we describe our case research to develop an empirically informed understanding of strategic organizational engagement in social media to advance organizational goals. We present an in-depth case study of strategic social media engagement at a successful multi-national business and IT consulting firm who routinely develops and deploys social media strategies to advance organizational goals. We situate our interpretation in the dynamic capabilities perspective, and present a revelatory case well-suited to developing an empirically-informed understanding of strategic social media engagement to advance organizational goals. We develop an analytic perspective of social media based as social systems, and describe topical collectivities as strategically important members of their ontology
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