Evaluation of an Algorithm for Aspect-Based Opinion Mining Using a Lexicon-Based Approach
Wogenstein, Florian; Drescher, Johannes; Reinel, Dirk; Rill, Sven (2013)
Proceedings of the 2nd International Workshop on Issues of Sentiment Discovery and Opinion Mining (WISDOM). ACM 2013, 5, S. 1-8.
DOI: DOI: 10.1145/2502069.2502074
Open Access
In this paper, we present a study of aspect-based opinion mining using a lexicon-based approach. We use a phrase-based opinion lexicon for the German language to investigate, how good strong positive and strong negative expressions of opinions, concerning products and services in the insurance domain, can be detected. We perform experiments on hand-tagged statements expressing opinions retrieved from the Ciao platform. The initial corpus contained about 14,000 sentences from 1,600 reviews. For both, positive and negative statements, more than 100 sentences were tagged. We show, that the algorithm can reach an accuracy of 62.2% for positive, but only 14.8% for negative utterances of opinions. We examine the cases, in which the opinion could not correctly be detected or in which the linking between the opinion statement and the aspect fails. Especially, the large gap in accuracy between positive and negative utterances is analysed.
Big Data, Analytics und Cloud - Begriff, Technologien und Perspektiven
Sultanow, E.; Peinl, René (2013)
NEW Solutions. 07/2013; 2013(06-07) NEW SOLUTIONS A Journal of Environmental and Occupational Health Policy, S. 12-19.
Recht und Nachhaltigkeit: Von der politischen Strategie in den Unternehmensalltag
Recht im Dialog, Gedächtnisschrift für Rainer Wörlen, Baden-Baden 2013 2013, S. 341-356.
Von der politischen Strategie in den Unternehmensalltag
Weber, Beatrix (2013)
Recht im Dialog, Gedächtnisschrift für Rainer Wörlen, Baden-Baden 2013 2013, S. 341-356.
Drei eherne Regeln für das Projektmanagement
Wolff, Dietmar (2013)
SOZIALwirtschaft aktuell 22/2013.
TouchStory: combining hyperfiction and multitouch
Atzenbeck, Claus; Bernstein, Mark; Al-Shafey, Marwa Ali; Mason, Stacey (2013)
Proceedings of the 24th ACM Conference on Hypertext and Social Media (HT'13), S. 189–195.
DOI: 10.1145/2481492.2481515
Open Access Peer Reviewed
As multitouch phones and tablets become more popular, multitouch technologies receive increasing attention. The underlying interaction paradigm of such devices is the space on which objects are manipulated by the user's fingertips. It is natural that hypertext narratives find their way from primarily mouse-driven interaction to spatial structures and visually rich presentations. In this article we propose three features for multitouch hypertext narrative applications: (i) Native multitouch support and direct manipulations of fictive objects; (ii) using the space as a structuring mechanism rather than a means for presentation; and (iii) supporting presentation of visually rich objects. Our prototype, TouchStory, is a novel tool specialized for authoring and reading hypertext narratives that integrates these features.
Soziale Arbeit ist mobile Arbeit – Mehr Qualität und Effizienz durch Tablets und Smartphones?
Wolff, Dietmar (2013)
ConSozial Congress des Sozialmarktes, Nürnberg 2013.
Abrechnungsverfahren zwischen Leistungsträgern in der Pflege und Krankenkassen für Leistungen nach SGB V und SGB XI
Wolff, Dietmar (2013)
AWV Sitzung des Arbeitskreises 1.6 „Entbürokratisierung des Dritten Sektors und des bürgerlichen Engagements“, Berlin 2013.
Wie viel ‚mobil‘ darf/muss es denn sein? Können Smartphones und Tablets unsere Arbeit erleichtern oder werden sie immer mehr zur Belastung?
Wolff, Dietmar (2013)
logiway IT-Forum 2013 für EDV-Verantwortliche der Kirchen, Augsburg 2013.
E‐Health in der Pflege – Ergebnisse der Workshops des bvitg in Kooperation mit FINSOZ und VDAB
Mittelstaedt, E.; Wolff, Dietmar; Schülke, P. (2013)
Positionspapier bvitg/FINSOZ/VDAB, Berlin 2013.
Anforderungen an E-Healthanwendungen für eine vernetze und intersektorale Versorgung aus der Perspektive der Pflege
Mittelstaedt, E.; Wolff, Dietmar; Schülke, P. (2013)
Konsolidierungsworkshop conhIT, Berlin 2013.
Neue Chance für die IT – vom Dokumentationserschwerer zum Kennzahlenlieferant
Wolff, Dietmar (2013)
SOCIAL Line group und hapec Fachtag Sozialwirtschaft, Hof 2013.
Pflege als Teil der E-Health-Initiative der Bundesregierung
Wolff, Dietmar; Ristok, H. (2013)
Workshop FINSOZ e.V., Frankfurt/M. 2013.
Mobile Computing: Modehype oder Enabler für Geschäftsprozesse?
Wolff, Dietmar (2013)
8. Eichstätter Fachtagung Sozialinformatik, Eichstätt 2013.
AAL - Bedeutung für IT Unternehmen
GeniAAL leben Veranstaltung „Wohnen und leben in der Zukunft“, CeBIT, Hannover 2013.
Recht und Nachhaltigkeit: Von der politischen Strategie in den Unternehmensalltag
Kokemoor, Axel; Kroeschell, Karl; Slapnicar, Klaus; Wedde, Rainer (2013)
Recht im Dialog, Gedächtnisschrift für Rainer Wörlen, Baden-Baden 2013, S. 341-356.
Gesundheitsförderung an Schulen für Pflegeberufe
Drossel, Matthias (2013)
HBScience (2013) 4 (3), S. 115-120.
DOI: 10.1007/s16024-013-0161-4
Big Data, 3D-Printing, the "Edge Rank" & the Crowd, Paris
Wagener, Andreas (2013)
Pôle Universitaire Léonard de Vinci, Paris, 19.03.2014 .
Performance of graph query languages: comparison of cypher, gremlin and native access in Neo4j
Holzschuher, F.; Peinl, René (2013)
Joint EDBT/ICDT 2013 Workshop GraphQ, Genua, Italy; 03/2013.
DOI: 10.1145/2457317.2457351
Open Access
NoSQL and especially graph databases are constantly gaining popularity among developers of Web 2.0 applications as they promise to deliver superior performance when handling highly interconnected data compared to traditional relational databases. Apache Shindig is the reference implementation for OpenSocial with its highly interconnected data model. However, the default back-end is based on a relational database. In this paper we describe our experiences with a different back-end based on the graph database Neo4j and compare the alternatives for querying data with each other and the JPA-based sample back-end running on MySQL. Moreover, we analyze why the different approaches often may yield such diverging results concerning throughput. The results show that the graph-based back-end can match and even outperform the traditional JPA implementation and that Cypher is a promising candidate for a standard graph query language, but still leaves room for improvements.
Gathering Knowledge from Social Knowledge Management Environments: Validation of an Anticipatory Standard
Peinl, René; Hetmank, L.; Bick, M.; Thalmann, S.; Kruse, P.; Pawlowski, J.; Maier, R.; Seeber, Isabella (2013)
Peinl, René; Hetmank, L.; Bick, M.; Thalmann, S.; Kruse, P.; Pawlowski, J.; Maier, R....
11th International Conference on Wirtschaftsinformatik, Leipzig, Germany; 02/2013 .
Open Access
Knowledge management is more and more happening in social environments, supported by social software. This directly changes the way knowledge workers interact and the way information and communication technology is used. Recent studies, striving to provide a more appropriate support for knowledge work, face challenges when eliciting knowledge from user activities and maintaining its situatedness in context. Corresponding solutions in such social environments are not interoperable due to a lack of appropriate standards. To bridge this gap, we propose and validate a first specification of an anticipatory standard in this field. We illustrate its application and utility analyzing three scenarios. As main result we analyze the lessons learned and provide insights into further research and development of our approach. By that we reach out to stimulate discussion and raise support for this initiative towards establishing standards in the domain of knowledge management.
Forschung und Entwicklung
Hochschule für Angewandte Wissenschaften Hof
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Daniela StockT 09281 409 – 3042
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