Formal Concept Analysis
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1 Formal Concept Analysis Applications Robert Jäschke Asmelash Teka Hadgu FG Wissensbasierte Systeme/L3S Research Center Leibniz Universität Hannover Robert Jäschke (FG KBS) Formal Concept Analysis 1 / 13
2 History of Formal Concept Analysis Formal Concept Analysis (FCA) originated in Darmstadt, Germany around 1980 as a mathematical theory that delivers a formalization of the concept of a concept. Since then, FCA spread into different areas of computer science, e.g., data analysis knowledge discovery software engineering Starting from datasets, FCA derives concept hierarchies. FCA allows you to create and visualize concept hierarchies based on well-grounded mathematical foundations. Robert Jäschke (FG KBS) Formal Concept Analysis 2 / 13
3 Example: Comparison of Coffee Machines Robert Jäschke (FG KBS) Formal Concept Analysis 3 / 13
4 Database Marketing at Jelmoli AG, Zurich travel accessoires perfumery ladies accessoires <= > <= >100 <= >400 = > J. Hereth, G. Stumme, R. Wille, and U. Wille. Conceptual knowledge discovery and data analysis. In Proc. ICCS 2000, volume 1867 of LNCS, pages Springer, Berlin/Heidelberg, Robert Jäschke (FG KBS) Formal Concept Analysis 4 / 13
5 Analysis of Plane Movements at Frankfurt Airport 2 O12 Ort der benötigten Staubahn [SBE] G12a Positionen (grobe Struktur) [POS] T2 W V G T1 M keine Angabe sonst. Angaben Halle A Halle B Halle C Halle Mitte Terminal 2 Vorfeld V3 keine unbekannte G. Stumme, R. Wille, and U. Wille. Conceptual knowledge discovery in databases using formal concept analysis methods. In Proc. PKDD, volume 1510 of LNCS, pages Springer, Berlin/Heidelberg, Robert Jäschke (FG KBS) Formal Concept Analysis 5 / 13
6 IT Security Management 3 S4.39 Deactivation for periods of absence S2.54 Procurement/selection of suitable answering machines S3.16 Briefing personnel on the operation of answering machines S2.4 Maintenance/repair regulations T4.1 Disruption of power supply S2.57 Regular playback and deletion of recorded messages S2.11 Provisions governing the use of security codes S1.29 Adequate siting of an IT system S4.38 Deactivation of unneccessary service features S2.55 Use of security code S6.40 Regular battery checks/replacements T2.5 Lack of, or inadequate, maintenance T4.18 Discharged or fatigued emergency power supply T2.1 Lack of, or insufficient, rules T3.15 Incorrect operation of answering machines T1.8 Dust, soiling T5.37 Determining security codes T4.19 Information loss due to full storage medium S2.56 Avoidance of confidential information S2.58 Limitation of message time S1.23 Locked doors T2.6 unauthorized access to rooms requiring protection T5.36 Deliberate overloading of answering machines T5.38 Misuse of remote inquiry features 3 K. Becker, G. Stumme, R. Wille, U. Wille, and M. Zickwolff. Conceptual information systems discussed through an it-security tool. In Rose Dieng and Olivier Corby, editors, Knowledge Engineering and Knowledge Management Methods, Models, and Tools, volume 1937 of LNCS, pages Springer, Berlin/Heidelberg, Robert Jäschke (FG KBS) Formal Concept Analysis 6 / 13
7 Text Clustering 4 4 A. Hotho, S. Staab, G. Stumme. Ontologies improve text document clustering. In Proc. ICDM, pages , Robert Jäschke (FG KBS) Formal Concept Analysis 7 / 13
8 Concept Manager Conferences/ICCS2000 vs. AUSTRALIA/eklund.peter conventional programs store mails in a tree structure only one search path exists which must already been set when saving the mail Robert Jäschke (FG KBS) Formal Concept Analysis 8 / 13
9 Concept Manager In CEM an can be tagged with several keywords. Robert Jäschke (FG KBS) Formal Concept Analysis 9 / 13
10 Concept Manager Several search paths are possible: Darmstadt/KVO/KVO Members KVO/Darmstadt/KVO Members KVO/KVO Members/Darmstadt Robert Jäschke (FG KBS) Formal Concept Analysis 10 / 13
11 Concept Manager Mails from sub-folders can also be found in parent folders. Several search paths are possible: Darmstadt/KVO/KVO Members KVO/Darmstadt/KVO Members KVO/KVO Members/Darmstadt Robert Jäschke (FG KBS) Formal Concept Analysis 11 / 13
12 Concept Manager Several views can be combined. Robert Jäschke (FG KBS) Formal Concept Analysis 12 / 13
13 CUBIST Visual Analytics Robert Jäschke (FG KBS) Formal Concept Analysis 13 / 13
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