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  • × theme_ss:"Automatisches Abstracting"
  1. Shen, D.; Yang, Q.; Chen, Z.: Noise reduction through summarization for Web-page classification (2007) 0.00 
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    Abstract
    Due to a large variety of noisy information embedded in Web pages, Web-page classification is much more difficult than pure-text classification. In this paper, we propose to improve the Web-page classification performance by removing the noise through summarization techniques. We first give empirical evidence that ideal Web-page summaries generated by human editors can indeed improve the performance of Web-page classification algorithms. We then put forward a new Web-page summarization algorithm based on Web-page layout and evaluate it along with several other state-of-the-art text summarization algorithms on the LookSmart Web directory. Experimental results show that the classification algorithms (NB or SVM) augmented by any summarization approach can achieve an improvement by more than 5.0% as compared to pure-text-based classification algorithms. We further introduce an ensemble method to combine the different summarization algorithms. The ensemble summarization method achieves more than 12.0% improvement over pure-text based methods.
  2. Meyer, R.: Allein, es wär' so schön gewesen : Der Copernic Summarzier kann Internettexte leider nicht befriedigend und sinnvoll zusammenfassen (2002) 0.00 
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    Abstract
    Das Netz hat die Jagd nach textlichen Inhalten erheblich erleichtert. Es ist so ein-fach, irgendeinen Beitrag über ein bestimmtes Thema zu finden, daß man eher über Fülle als über Mangel klagt. Suchmaschinen und Kataloge helfen beim Sichten, indem sie eine Vorauswahl von Links treffen. Das Programm "Copernic Summarizer" geht einen anderen Weg: Es erstellt Exzerpte beliebiger Texte und will damit die Lesezeit verkürzen. Decken wir über die lästige Zwangsregistrierung (unter Pflichtangabe einer Mailadresse) das Mäntelchen des Schweigens. Was folgt, geht rasch, nicht nur die ersten Schritte sind schnell vollzogen. Die Software läßt sich in verschiedenen Umgebungen einsetzen. Unterstützt werden Microsoft Office, einige Mailprogramme sowie der Acrobat Reader für PDF-Dateien. Besonders eignet sich das Verfahren freilich für Internetseiten. Der "Summarizer" nistet sich im Browser als Symbol ein. Und mit einem Klick faßt er einen Online Text in einem Extrafenster zusammen. Es handelt sich dabei nicht im eigentlichen Sinne um eine Zusammenfassung mit eigenen Worten, die in Kürze den Gesamtgehalt wiedergibt. Das Ergebnis ist schlichtes Kürzen, das sich noch dazu ziemlich brutal vollzieht, da grundsätzlich vollständige Sätze gestrichen werden. Die Software erfaßt den Text, versucht Schlüsselwörter zu ermitteln und entscheidet danach, welche Sätze wichtig sind und welche nicht. Das Verfahren mag den Entwicklungsaufwand verringert haben, dem Anwender hingegen bereitet es Probleme. Oftmals beziehen sich Sätze auf frühere Aussagen, etwa in Formulierungen wie "Diese Methode wird . . ." oder "Ein Jahr später . . ." In der Zusammenfassung fehlt entweder der Kontext dazu oder man kann nicht darauf vertrauen, daß der Bezug sich tatsächlich im voranstehenden Satz findet. Die Liste der Schlüsselwörter, die links eingeblendet wird, wirkt nicht immer glücklich. Teilweise finden sich unauffällige Begriffe wie "Anlaß" oder "zudem". Wenigstens lassen sich einzelne Begriffe entfernen, um das Ergebnis zu verfeinern. Hilfreich ist das mögliche Markieren der Schlüsselbegriffe im Text. Unverständlich bleibt hingegen, weshalb man nicht selbst relevante Wörter festlegen darf, die als Basis für die Zusammenfassung dienen. Das Kürzen des Textes ist in mehreren Stufen möglich, von fünf bis fünfzig Prozent. Fünf Prozent sind unbrauchbar; ein guter Kompromiß sind fünfundzwanzig. Allerdings nimmt es die Software nicht genau mit den eigenen Vorgaben. Bei kürzeren Texten ist die Zusammenfassung von angeblich einem Viertel fast genauso lang wie das Original; noch bei zwei Seiten eng bedrucktem Text (8 Kilobyte) entspricht das Exzerpt einem Drittel des Originals. Für gewöhnlich sind Webseiten geschmückt mit einem Menü, mit Werbung, mit Hinweiskästen und allerlei mehr. Sehr zuverlässig erkennt die Software, was überhaupt Fließtext ist; alles andere wird ausgefiltert. Da bedauert man es zuweilen, daß der Summarizer nicht den kompletten Text listet, damit er in einer angenehmen Umgebung schwarz auf weiß gelesen oder gedruckt wird. Wahlweise zum manuellen Auslösen der Zusammenfassung wird der "LiveSummarizer" aktiviert. Er verdichtet Text zeitgleich mit dem Aufrufen einer Seite, nimmt dafür aber ein Drittel der Bildschirmfläche ein - ein zu hoher Preis. Insgesamt fragen wir uns, wie man das Programm sinnvoll nutzen soll. Beim Verdichten von Nachrichten ist unsicher, ob Summarizer nicht wichtige Details unterschlägt. Bei langen Texten sorgen Fragen zum Kontext für Verwirrung. Sucht man nach der Antwort auf eine Detailfrage, hilft die Suchfunktion des Browsers oft schneller. Eine Zusammenfassung hätte auch dem Preis gutgetan: 100 Euro verlangt der deutsche Verleger Softline. Das scheint deutlich zu hoch gegriffen. Zumal das Zusammenfassen der einzige Zweck des Summarizers ist. Das Verwalten von Bookmarks und das Archivieren von Texten wären sinnvolle Ergänzungen gewesen.
  3. Yulianti, E.; Huspi, S.; Sanderson, M.: Tweet-biased summarization (2016) 0.00 
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    Abstract
    We examined whether the microblog comments given by people after reading a web document could be exploited to improve the accuracy of a web document summarization system. We examined the effect of social information (i.e., tweets) on the accuracy of the generated summaries by comparing the user preference for TBS (tweet-biased summary) with GS (generic summary). The result of crowdsourcing-based evaluation shows that the user preference for TBS was significantly higher than GS. We also took random samples of the documents to see the performance of summaries in a traditional evaluation using ROUGE, which, in general, TBS was also shown to be better than GS. We further analyzed the influence of the number of tweets pointed to a web document on summarization accuracy, finding a positive moderate correlation between the number of tweets pointed to a web document and the performance of generated TBS as measured by user preference. The results show that incorporating social information into the summary generation process can improve the accuracy of summary. The reason for people choosing one summary over another in a crowdsourcing-based evaluation is also presented in this article.
  4. Goh, A.; Hui, S.C.: TES: a text extraction system (1996) 0.00 
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    Date
    26. 2.1997 10:22:43
  5. Robin, J.; McKeown, K.: Empirically designing and evaluating a new revision-based model for summary generation (1996) 0.00 
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    Date
    6. 3.1997 16:22:15
  6. Jones, P.A.; Bradbeer, P.V.G.: Discovery of optimal weights in a concept selection system (1996) 0.00 
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    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
  7. Vanderwende, L.; Suzuki, H.; Brockett, J.M.; Nenkova, A.: Beyond SumBasic : task-focused summarization with sentence simplification and lexical expansion (2007) 0.00 
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    Abstract
    In recent years, there has been increased interest in topic-focused multi-document summarization. In this task, automatic summaries are produced in response to a specific information request, or topic, stated by the user. The system we have designed to accomplish this task comprises four main components: a generic extractive summarization system, a topic-focusing component, sentence simplification, and lexical expansion of topic words. This paper details each of these components, together with experiments designed to quantify their individual contributions. We include an analysis of our results on two large datasets commonly used to evaluate task-focused summarization, the DUC2005 and DUC2006 datasets, using automatic metrics. Additionally, we include an analysis of our results on the DUC2006 task according to human evaluation metrics. In the human evaluation of system summaries compared to human summaries, i.e., the Pyramid method, our system ranked first out of 22 systems in terms of overall mean Pyramid score; and in the human evaluation of summary responsiveness to the topic, our system ranked third out of 35 systems.
  8. Liang, S.-F.; Devlin, S.; Tait, J.: Investigating sentence weighting components for automatic summarisation (2007) 0.00 
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    Abstract
    The work described here initially formed part of a triangulation exercise to establish the effectiveness of the Query Term Order algorithm. It subsequently proved to be a reliable indicator for summarising English web documents. We utilised the human summaries from the Document Understanding Conference data, and generated queries automatically for testing the QTO algorithm. Six sentence weighting schemes that made use of Query Term Frequency and QTO were constructed to produce system summaries, and this paper explains the process of combining and balancing the weighting components. The summaries produced were evaluated by the ROUGE-1 metric, and the results showed that using QTO in a weighting combination resulted in the best performance. We also found that using a combination of more weighting components always produced improved performance compared to any single weighting component.
  9. Xu, D.; Cheng, G.; Qu, Y.: Preferences in Wikipedia abstracts : empirical findings and implications for automatic entity summarization (2014) 0.00 
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    Abstract
    The volume of entity-centric structured data grows rapidly on the Web. The description of an entity, composed of property-value pairs (a.k.a. features), has become very large in many applications. To avoid information overload, efforts have been made to automatically select a limited number of features to be shown to the user based on certain criteria, which is called automatic entity summarization. However, to the best of our knowledge, there is a lack of extensive studies on how humans rank and select features in practice, which can provide empirical support and inspire future research. In this article, we present a large-scale statistical analysis of the descriptions of entities provided by DBpedia and the abstracts of their corresponding Wikipedia articles, to empirically study, along several different dimensions, which kinds of features are preferable when humans summarize. Implications for automatic entity summarization are drawn from the findings.
  10. Wu, Y.-f.B.; Li, Q.; Bot, R.S.; Chen, X.: Finding nuggets in documents : a machine learning approach (2006) 0.00 
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    Date
    22. 7.2006 17:25:48
  11. Kim, H.H.; Kim, Y.H.: Generic speech summarization of transcribed lecture videos : using tags and their semantic relations (2016) 0.00 
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    Date
    22. 1.2016 12:29:41
  12. Oh, H.; Nam, S.; Zhu, Y.: Structured abstract summarization of scientific articles : summarization using full-text section information (2023) 0.00 
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    Date
    22. 1.2023 18:57:12
  13. Jiang, Y.; Meng, R.; Huang, Y.; Lu, W.; Liu, J.: Generating keyphrases for readers : a controllable keyphrase generation framework (2023) 0.00 
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    Date
    22. 6.2023 14:55:20
  14. Ou, S.; Khoo, C.S.G.; Goh, D.H.: Multi-document summarization of news articles using an event-based framework (2006) 0.00 
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    Abstract
    Purpose - The purpose of this research is to develop a method for automatic construction of multi-document summaries of sets of news articles that might be retrieved by a web search engine in response to a user query. Design/methodology/approach - Based on the cross-document discourse analysis, an event-based framework is proposed for integrating and organizing information extracted from different news articles. It has a hierarchical structure in which the summarized information is presented at the top level and more detailed information given at the lower levels. A tree-view interface was implemented for displaying a multi-document summary based on the framework. A preliminary user evaluation was performed by comparing the framework-based summaries against the sentence-based summaries. Findings - In a small evaluation, all the human subjects preferred the framework-based summaries to the sentence-based summaries. It indicates that the event-based framework is an effective way to summarize a set of news articles reporting an event or a series of relevant events. Research limitations/implications - Limited to event-based news articles only, not applicable to news critiques and other kinds of news articles. A summarization system based on the event-based framework is being implemented. Practical implications - Multi-document summarization of news articles can adopt the proposed event-based framework. Originality/value - An event-based framework for summarizing sets of news articles was developed and evaluated using a tree-view interface for displaying such summaries.
  15. Ou, S.; Khoo, S.G.; Goh, D.H.: Automatic multidocument summarization of research abstracts : design and user evaluation (2007) 0.00 
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    Abstract
    The purpose of this study was to develop a method for automatic construction of multidocument summaries of sets of research abstracts that may be retrieved by a digital library or search engine in response to a user query. Sociology dissertation abstracts were selected as the sample domain in this study. A variable-based framework was proposed for integrating and organizing research concepts and relationships as well as research methods and contextual relations extracted from different dissertation abstracts. Based on the framework, a new summarization method was developed, which parses the discourse structure of abstracts, extracts research concepts and relationships, integrates the information across different abstracts, and organizes and presents them in a Web-based interface. The focus of this article is on the user evaluation that was performed to assess the overall quality and usefulness of the summaries. Two types of variable-based summaries generated using the summarization method-with or without the use of a taxonomy-were compared against a sentence-based summary that lists only the research-objective sentences extracted from each abstract and another sentence-based summary generated using the MEAD system that extracts important sentences. The evaluation results indicate that the majority of sociological researchers (70%) and general users (64%) preferred the variable-based summaries generated with the use of the taxonomy.

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