-
KDD : techniques and applications (1998)
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- Footnote
- A special issue of selected papers from the Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD'97), held Singapore, 22-23 Feb 1997
-
Witschel, H.F.: Text, Wörter, Morpheme : Möglichkeiten einer automatischen Terminologie-Extraktion (2004)
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- Imprint
- Leipzig : Universität / Fakultät für Mathematik und Informatik Institut für Informatik
-
Howlett, D.: Digging deep for treasure (1998)
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- Date
- 26. 3.2000 16:35:23
-
Tunbridge, N.: Semiology put to data mining (1999)
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- Source
- Online and CD-ROM review. 23(1999) no.5, S.303-305
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Raghavan, V.V.; Deogun, J.S.; Sever, H.: Knowledge discovery and data mining : introduction (1998)
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- Date
- 7. 2.1999 11:23:06
-
Heyer, G.; Läuter, M.; Quasthoff, U.; Wolff, C.: Texttechnologische Anwendungen am Beispiel Text Mining (2000)
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- Source
- Sprachtechnologie für eine dynamische Wirtschaft im Medienzeitalter - Language technologies for dynamic business in the age of the media - L'ingénierie linguistique au service de la dynamisation économique à l'ère du multimédia: Tagungsakten der XXVI. Jahrestagung der Internationalen Vereinigung Sprache und Wirtschaft e.V., 23.-25.11.2000, Fachhochschule Köln. Hrsg.: K.-D. Schmitz
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Leydesdorff, L.; Persson, O.: Mapping the geography of science : distribution patterns and networks of relations among cities and institutes (2010)
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- Date
- 23. 7.2010 13:10:08
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Berendt, B.; Krause, B.; Kolbe-Nusser, S.: Intelligent scientific authoring tools : interactive data mining for constructive uses of citation networks (2010)
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- Date
- 23. 1.2011 16:02:43
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Frické, M.: Big data and its epistemology (2015)
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- Date
- 20. 3.2015 18:23:25
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Teich, E.; Degaetano-Ortlieb, S.; Fankhauser, P.; Kermes, H.; Lapshinova-Koltunski, E.: ¬The linguistic construal of disciplinarity : a data-mining approach using register features (2016)
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- Date
- 12. 6.2016 20:23:08
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Information visualization in data mining and knowledge discovery (2002)
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- Date
- 23. 3.2008 19:10:22
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Seidenfaden, U.: Schürfen in Datenbergen : Data-Mining soll möglichst viel Information zu Tage fördern (2001)
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- Content
- "Fast alles wird heute per Computer erfasst. Kaum einer überblickt noch die enormen Datenmengen, die sich in Unternehmen, Universitäten und Verwaltung ansammeln. Allein in den öffentlich zugänglichen Datenbanken der Genforscher fallen pro Woche rund 4,5 Gigabyte an neuer Information an. "Vom potentiellen Wissen in den Datenbanken wird bislang aber oft nur ein Teil genutzt", meint Stefan Wrobel vom Lehrstuhl für Wissensentdeckung und Maschinelles Lernen der Otto-von-Guericke-Universität in Magdeburg. Sein Doktorand Mark-Andre Krogel hat soeben mit einem neuen Verfahren zur Datenbankrecherche in San Francisco einen inoffiziellen Weltmeister-Titel in der Disziplin "Data-Mining" gewonnen. Dieser Daten-Bergbau arbeitet im Unterschied zur einfachen Datenbankabfrage, die sich einfacher statistischer Methoden bedient, zusätzlich mit künstlicher Intelligenz und Visualisierungsverfahren, um Querverbindungen zu finden. "Das erleichtert die Suche nach verborgenen Zusammenhängen im Datenmaterial ganz erheblich", so Wrobel. Die Wirtschaft setzt Data-Mining bereits ein, um das Kundenverhalten zu untersuchen und vorherzusagen. "Stellen sie sich ein Unternehmen mit einer breiten Produktpalette und einem großen Kundenstamm vor", erklärt Wrobel. "Es kann seinen Erfolg maximieren, wenn es Marketing-Post zielgerichtet an seine Kunden verschickt. Wer etwa gerade einen PC gekauft hat, ist womöglich auch an einem Drucker oder Scanner interessiert." In einigen Jahren könnte ein Analysemodul den Manager eines Unternehmens selbständig informieren, wenn ihm etwas Ungewöhnliches aufgefallen ist. Das muss nicht immer positiv für den Kunden sein. Data-Mining ließe sich auch verwenden, um die Lebensdauer von Geschäftsbeziehungen zu prognostizieren. Für Kunden mit geringen Kaufinteressen würden Reklamationen dann längere Bearbeitungszeiten nach sich ziehen. Im konkreten Projekt von Mark-Andre Krogel ging es um die Vorhersage von Protein-Funktionen. Proteine sind Eiweißmoleküle, die fast alle Stoffwechselvorgänge im menschlichen Körper steuern. Sie sind daher die primären Ziele von Wirkstoffen zur Behandlung von Erkrankungen. Das erklärt das große Interesse der Pharmaindustrie. Experimentelle Untersuchungen, die Aufschluss über die Aufgaben der über 100 000 Eiweißmoleküle im menschlichen Körper geben können, sind mit einem hohen Zeitaufwand verbunden. Die Forscher möchten deshalb die Zeit verkürzen, indem sie das vorhandene Datenmaterial mit Hilfe von Data-Mining auswerten. Aus der im Humangenomprojekt bereits entschlüsselten Abfolge der Erbgut-Bausteine lässt sich per Datenbankanalyse die Aneinanderreihung bestimmter Aminosäuren zu einem Protein vorhersagen. Andere Datenbanken wiederum enthalten Informationen, welche Struktur ein Protein mit einer bestimmten vorgegebenen Funktion haben könnte. Aus bereits bekannten Strukturelementen versuchen die Genforscher dann, auf die mögliche Funktion eines bislang noch unbekannten Eiweißmoleküls zu schließen.- Fakten Verschmelzen - Bei diesem theoretischen Ansatz kommt es darauf an, die in Datenbanken enthaltenen Informationen so zu verknüpfen, dass die Ergebnisse mit hoher Wahrscheinlichkeit mit der Realität übereinstimmen. "Im Rahmen des Wettbewerbs erhielten wir Tabellen als Vorgabe, in denen Gene und Chromosomen nach bestimmten Gesichtspunkten klassifiziert waren", erläutert Krogel. Von einigen Genen war bekannt, welche Proteine sie produzieren und welche Aufgabe diese Eiweißmoleküle besitzen. Diese Beispiele dienten dem von Krogel entwickelten Programm dann als Hilfe, für andere Gene vorherzusagen, welche Funktionen die von ihnen erzeugten Proteine haben. "Die Genauigkeit der Vorhersage lag bei den gestellten Aufgaben bei über 90 Prozent", stellt Krogel fest. Allerdings könne man in der Praxis nicht davon ausgehen, dass alle Informationen aus verschiedenen Datenbanken in einem einheitlichen Format vorliegen. Es gebe verschiedene Abfragesprachen der Datenbanken, und die Bezeichnungen von Eiweißmolekülen mit gleicher Aufgabe seien oftmals uneinheitlich. Die Magdeburger Informatiker arbeiten deshalb in der DFG-Forschergruppe "Informationsfusion" an Methoden, um die verschiedenen Datenquellen besser zu erschließen."
-
Fonseca, F.; Marcinkowski, M.; Davis, C.: Cyber-human systems of thought and understanding (2019)
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- Date
- 7. 3.2019 16:32:22
-
Advances in knowledge discovery and data mining (1996)
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- Footnote
- Rez. in: JASIS 49(1998) no.4, S.386-387 (F. Exner)
-
Chowdhury, G.G.: Template mining for information extraction from digital documents (1999)
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- Date
- 2. 4.2000 18:01:22
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Wattenberg, M.; Viégas, F.; Johnson, I.: How to use t-SNE effectively (2016)
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Ku, L.-W.; Chen, H.-H.: Mining opinions from the Web : beyond relevance retrieval (2007)
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- Abstract
- Documents discussing public affairs, common themes, interesting products, and so on, are reported and distributed on the Web. Positive and negative opinions embedded in documents are useful references and feedbacks for governments to improve their services, for companies to market their products, and for customers to purchase their objects. Web opinion mining aims to extract, summarize, and track various aspects of subjective information on the Web. Mining subjective information enables traditional information retrieval (IR) systems to retrieve more data from human viewpoints and provide information with finer granularity. Opinion extraction identifies opinion holders, extracts the relevant opinion sentences, and decides their polarities. Opinion summarization recognizes the major events embedded in documents and summarizes the supportive and the nonsupportive evidence. Opinion tracking captures subjective information from various genres and monitors the developments of opinions from spatial and temporal dimensions. To demonstrate and evaluate the proposed opinion mining algorithms, news and bloggers' articles are adopted. Documents in the evaluation corpora are tagged in different granularities from words, sentences to documents. In the experiments, positive and negative sentiment words and their weights are mined on the basis of Chinese word structures. The f-measure is 73.18% and 63.75% for verbs and nouns, respectively. Utilizing the sentiment words mined together with topical words, we achieve f-measure 62.16% at the sentence level and 74.37% at the document level.
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Lam, W.; Yang, C.C.; Menczer, F.: Introduction to the special topic section on mining Web resources for enhancing information retrieval (2007)
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Kong, S.; Ye, F.; Feng, L.; Zhao, Z.: Towards the prediction problems of bursting hashtags on Twitter (2015)
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Matson, L.D.; Bonski, D.J.: Do digital libraries need librarians? (1997)
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- Date
- 22.11.1998 18:57:22
