Book chapters
How Tagging Pragmatics Influence Tag Sense Discovery in Social Annotation Systems.
In:
P. Serdyukov, P. Braslavski, S. Kuznetsov, J. Kamps, S. Rüger, E. Agichtein, I. Segalovich and E. Yilmaz, editors,
Advances in Information Retrieval, pages 86-97.
Springer Berlin Heidelberg, 2013.
Thomas Niebler, Philipp Singer, Dominik Benz, Christian Körner, Markus Strohmaier and Andreas Hotho.
[doi]
[abstract]
[BibTeX]
The presence of emergent semantics in social annotation systems has been reported in numerous studies. Two important problems in this context are the induction of semantic relations among tags and the discovery of different senses of a given tag. While a number of approaches for discovering tag senses exist, little is known about which
Journal articles
Evaluation of Folksonomy Induction Algorithms.
Transactions on Intelligent Systems and Technology, 2012.
Markus Strohmaier, Denis Helic, Dominik Benz, Christian Körner and Roman Kern.
[doi]
[BibTeX]
Conference articles
One Tag to Bind Them All : Measuring Term Abstractness in Social Metadata.
In: G. Antoniou, M. Grobelnik, E. Simperl, B. Parsia, D. Plexousakis, J. Pan and P. D. Leenheer, editors,
Proceedings of the 8th Extended Semantic Web Conference (ESWC 2011).
Heraklion, Crete, 2011.
Dominik Benz, Christian Körner, Andreas Hotho, Gerd Stumme and Markus Strohmaier.
[doi]
[abstract]
[BibTeX]
Recent research has demonstrated how the widespread adoption of collaborative tagging systems yields emergent semantics. In recent years, much has been learned about how to harvest the data produced by taggers for engineering light-weight ontologies. For example, existing measures of tag similarity and tag relatedness have proven crucial step stones for making latent semantic relations in tagging systems explicit. However, little progress has been made on other issues, such as understanding the different levels of tag generality (or tag abstractness), which is essential for, among others, identifying hierarchical relationships between concepts. In this paper we aim to address this gap. Starting from a review of linguistic definitions of word abstractness, we first use several large-scale ontologies and taxonomies as grounded measures of word generality, including Yago, Wordnet, DMOZ and Wikitaxonomy. Then, we introduce and apply several folksonomy-based methods to measure the level of generality of given tags. We evaluate these methods by comparing them with the grounded measures. Our results suggest that the generality of tags in social tagging systems can be approximated with simple measures. Our work has implications for a number of problems related to social tagging systems, including search, tag recommendation, and the acquisition of light-weight ontologies from tagging data.
One Tag to Bind Them All : Measuring Term Abstractness in Social Metadata.
In: G. Antoniou, M. Grobelnik, E. Simperl, B. Parsia, D. Plexousakis, J. Pan and P. D. Leenheer, editors,
Proceedings of the 8th Extended Semantic Web Conference (ESWC 2011).
Heraklion, Crete, 2011.
Dominik Benz, Christian Körner, Andreas Hotho, Gerd Stumme and Markus Strohmaier.
[doi]
[abstract]
[BibTeX]
Recent research has demonstrated how the widespread adoption of collaborative tagging systems yields emergent semantics. In recent years, much has been learned about how to harvest the data produced by taggers for engineering light-weight ontologies. For example, existing measures of tag similarity and tag relatedness have proven crucial step stones for making latent semantic relations in tagging systems explicit. However, little progress has been made on other issues, such as understanding the different levels of tag generality (or tag abstractness), which is essential for, among others, identifying hierarchical relationships between concepts. In this paper we aim to address this gap. Starting from a review of linguistic definitions of word abstractness, we first use several large-scale ontologies and taxonomies as grounded measures of word generality, including Yago, Wordnet, DMOZ and Wikitaxonomy. Then, we introduce and apply several folksonomy-based methods to measure the level of generality of given tags. We evaluate these methods by comparing them with the grounded measures. Our results suggest that the generality of tags in social tagging systems can be approximated with simple measures. Our work has implications for a number of problems related to social tagging systems, including search, tag recommendation, and the acquisition of light-weight ontologies from tagging data.
One Tag to Bind Them All : Measuring Term Abstractness in Social Metadata.
In: G. Antoniou, M. Grobelnik, E. Simperl, B. Parsia, D. Plexousakis, J. Pan and P. D. Leenheer, editors,
Proceedings of the 8th Extended Semantic Web Conference (ESWC 2011).
Heraklion, Crete, 2011.
Dominik Benz, Christian Körner, Andreas Hotho, Gerd Stumme and Markus Strohmaier.
[doi]
[abstract]
[BibTeX]
Recent research has demonstrated how the widespread adoption of collaborative tagging systems yields emergent semantics. In recent years, much has been learned about how to harvest the data produced by taggers for engineering light-weight ontologies. For example, existing measures of tag similarity and tag relatedness have proven crucial step stones for making latent semantic relations in tagging systems explicit. However, little progress has been made on other issues, such as understanding the different levels of tag generality (or tag abstractness), which is essential for, among others, identifying hierarchical relationships between concepts. In this paper we aim to address this gap. Starting from a review of linguistic definitions of word abstractness, we first use several large-scale ontologies and taxonomies as grounded measures of word generality, including Yago, Wordnet, DMOZ and Wikitaxonomy. Then, we introduce and apply several folksonomy-based methods to measure the level of generality of given tags. We evaluate these methods by comparing them with the grounded measures. Our results suggest that the generality of tags in social tagging systems can be approximated with simple measures. Our work has implications for a number of problems related to social tagging systems, including search, tag recommendation, and the acquisition of light-weight ontologies from tagging data.
One Tag to Bind Them All: Measuring Term Abstractness in Social Metadata.
In: G. Antoniou, M. Grobelnik, E. Simperl, B. Parsia, D. Plexousakis, J. Pan and P. D. Leenheer, editors,
Proceedings of the 8th Extended Semantic Web Conference (ESWC 2011).
Heraklion, Crete, 2011.
Dominik Benz, Christian Körner, Andreas Hotho, Gerd Stumme and Markus Strohmaier.
[doi]
[abstract]
[BibTeX]
Recent research has demonstrated how the widespread adoption of collaborative tagging systems yields emergent semantics. In recent years, much has been learned about how to harvest the data produced by taggers for engineering light-weight ontologies. For example, existing measures of tag similarity and tag relatedness have proven crucial step stones for making latent semantic relations in tagging systems explicit. However, little progress has been made on other issues, such as understanding the different levels of tag generality (or tag abstractness), which is essential for, among others, identifying hierarchical relationships between concepts. In this paper we aim to address this gap. Starting from a review of linguistic definitions of word abstractness, we first use several large-scale ontologies and taxonomies as grounded measures of word generality, including Yago, Wordnet, DMOZ and Wikitaxonomy. Then, we introduce and apply several folksonomy-based methods to measure the level of generality of given tags. We evaluate these methods by comparing them with the grounded measures. Our results suggest that the generality of tags in social tagging systems can be approximated with simple measures. Our work has implications for a number of problems related to social tagging systems, including search, tag recommendation, and the acquisition of light-weight ontologies from tagging data.
One Tag to Bind Them All: Measuring Term Abstractness in Social Metadata.
In:
Working Notes of the LWA 2011 - Learning, Knowledge, Adaptation.
2011.
Dominik Benz, Christian Körner, Andreas Hotho, Gerd Stumme and Markus Strohmaier.
[BibTeX]
One Tag to Bind Them All: Measuring Term Abstractness in Social Metadata.
In:
Working Notes of the LWA 2011 - Learning, Knowledge, Adaptation.
2011.
Dominik Benz, Christian Körner, Andreas Hotho, Gerd Stumme and Markus Strohmaier.
[BibTeX]
Social Bookmarking Systems: Verbosity Improves Semantics.
In:
Proceedings of INSNA Sunbelt XXX.
Riva del Garda Fierecongressi, Trento, Italy, 2010.
Christian Körner, Dominik Benz, Andreas Hotho, Markus Strohmaier, Gerd Stumme, C., Benz, D., Hotho, A., Strohmaier, M., Stumme and G..
[BibTeX]
Social Bookmarking Systems: Verbosity Improves Semantics.
In:
Proceedings of INSNA Sunbelt XXX.
Riva del Garda Fierecongressi, Trento, Italy, 2010.
Christian Körner, Dominik Benz, Andreas Hotho, Markus Strohmaier and Gerd Stumme.
[BibTeX]
Stop Thinking, start Tagging - Tag Semantics emerge from Collaborative Verbosity.
In:
Proceedings of the 19th International World Wide Web Conference (WWW 2010).
ACM, Raleigh, NC, USA, 2010.
Christian Körner, Dominik Benz, Markus Strohmaier, Andreas Hotho and Gerd Stumme.
[doi]
[abstract]
[BibTeX]
Recent research provides evidence for the presence of emergent semantics in collaborative tagging systems. While several methods have been proposed, little is known about the factors that influence the evolution of semantic structures in these systems. A natural hypothesis is that the quality of the emergent semantics depends on the pragmatics of tagging: Users with certain usage patterns might contribute more to the resulting semantics than others. In this work, we propose several measures which enable a pragmatic differentiation of taggers by their degree of contribution to emerging semantic structures. We distinguish between categorizers, who typically use a small set of tags as a replacement for hierarchical classification schemes, and describers, who are annotating resources with a wealth of freely associated, descriptive keywords. To study our hypothesis, we apply semantic similarity measures to 64 different partitions of a real-world and large-scale folksonomy containing different ratios of categorizers and describers. Our results not only show that ‘verbose’ taggers are most useful for the emergence of tag semantics, but also that a subset containing only 40% of the most ‘verbose’ taggers can produce results that match and even outperform the semantic precision obtained from the whole dataset. Moreover, the results suggest that there exists a causal link between the pragmatics of tagging and resulting emergent semantics. This work is relevant for designers and analysts of tagging systems interested (i) in fostering the semantic development of their platforms, (ii) in identifying users introducing “semantic noise??, and (iii) in learning ontologies.
Stop Thinking, start Tagging - Tag Semantics emerge from Collaborative Verbosity.
In:
Proceedings of the 19th International World Wide Web Conference (WWW 2010).
ACM, Raleigh, NC, USA, 2010.
Christian Körner, Dominik Benz, Markus Strohmaier, Andreas Hotho and Gerd Stumme.
[doi]
[abstract]
[BibTeX]
Recent research provides evidence for the presence of emergent semantics in collaborative tagging systems. While several methods have been proposed, little is known about the factors that influence the evolution of semantic structures in these systems. A natural hypothesis is that the quality of the emergent semantics depends on the pragmatics of tagging: Users with certain usage patterns might contribute more to the resulting semantics than others. In this work, we propose several measures which enable a pragmatic differentiation of taggers by their degree of contribution to emerging semantic structures. We distinguish between categorizers, who typically use a small set of tags as a replacement for hierarchical classification schemes, and describers, who are annotating resources with a wealth of freely associated, descriptive keywords. To study our hypothesis, we apply semantic similarity measures to 64 different partitions of a real-world and large-scale folksonomy containing different ratios of categorizers and describers. Our results not only show that ‘verbose’ taggers are most useful for the emergence of tag semantics, but also that a subset containing only 40% of the most ‘verbose’ taggers can produce results that match and even outperform the semantic precision obtained from the whole dataset. Moreover, the results suggest that there exists a causal link between the pragmatics of tagging and resulting emergent semantics. This work is relevant for designers and analysts of tagging systems interested (i) in fostering the semantic development of their platforms, (ii) in identifying users introducing “semantic noise�?, and (iii) in learning ontologies.
Stop Thinking, start Tagging - Tag Semantics emerge from Collaborative Verbosity.
In:
Proceedings of the 19th International World Wide Web Conference (WWW 2010).
ACM, Raleigh, NC, USA, 2010.
Christian Körner, Dominik Benz, Markus Strohmaier, Andreas Hotho and Gerd Stumme.
[doi]
[abstract]
[BibTeX]
Recent research provides evidence for the presence of emergent semantics in collaborative tagging systems. While several methods have been proposed, little is known about the factors that influence the evolution of semantic structures in these systems. A natural hypothesis is that the quality of the emergent semantics depends on the pragmatics of tagging: Users with certain usage patterns might contribute more to the resulting semantics than others. In this work, we propose several measures which enable a pragmatic differentiation of taggers by their degree of contribution to emerging semantic structures. We distinguish between categorizers, who typically use a small set of tags as a replacement for hierarchical classification schemes, and describers, who are annotating resources with a wealth of freely associated, descriptive keywords. To study our hypothesis, we apply semantic similarity measures to 64 different partitions of a real-world and large-scale folksonomy containing different ratios of categorizers and describers. Our results not only show that ‘verbose’ taggers are most useful for the emergence of tag semantics, but also that a subset containing only 40% of the most ‘verbose’ taggers can produce results that match and even outperform the semantic precision obtained from the whole dataset. Moreover, the results suggest that there exists a causal link between the pragmatics of tagging and resulting emergent semantics. This work is relevant for designers and analysts of tagging systems interested (i) in fostering the semantic development of their platforms, (ii) in identifying users introducing “semantic noise”, and (iii) in learning ontologies.
Stop Thinking, start Tagging - Tag Semantics emerge from Collaborative Verbosity.
In:
Proceedings of the 19th International World Wide Web Conference (WWW 2010).
ACM, Raleigh, NC, USA, 2010.
Christian Körner, Dominik Benz, Markus Strohmaier, Andreas Hotho and Gerd Stumme.
[doi]
[abstract]
[BibTeX]
Recent research provides evidence for the presence of emergent semantics in collaborative tagging systems. While several methods have been proposed, little is known about the factors that influence the evolution of semantic structures in these systems. A natural hypothesis is that the quality of the emergent semantics depends on the pragmatics of tagging: Users with certain usage patterns might contribute more to the resulting semantics than others. In this work, we propose several measures which enable a pragmatic differentiation of taggers by their degree of contribution to emerging semantic structures. We distinguish between categorizers, who typically use a small set of tags as a replacement for hierarchical classification schemes, and describers, who are annotating resources with a wealth of freely associated, descriptive keywords. To study our hypothesis, we apply semantic similarity measures to 64 different partitions of a real-world and large-scale folksonomy containing different ratios of categorizers and describers. Our results not only show that ‘verbose’ taggers are most useful for the emergence of tag semantics, but also that a subset containing only 40% of the most ‘verbose’ taggers can produce results that match and even outperform the semantic precision obtained from the whole dataset. Moreover, the results suggest that there exists a causal link between the pragmatics of tagging and resulting emergent semantics. This work is relevant for designers and analysts of tagging systems interested (i) in fostering the semantic development of their platforms, (ii) in identifying users introducing “semantic noise”, and (iii) in learning ontologies.