Wissensentdeckung in Datenbanken - Optimierung, Überanpassung

t Dortmund Optimierung Overfitting Überanpassung Überanpassung 13 von 15 0 0.2 0.4 0.6 0.8 1 0 0.2 0.4 0.6 0.8 1 Bias Varianz E rr o r Complexity Informatik—Künstliche Intelligenz Computergestützte Statistik [...] Boyd und Lieven Vandenberghe: Convex Optimization) 4 von 15 1.15 1.2 1.25 1.3 1.35 0 0.2 0.4 0.6 0.8 1 f( x ) x log(exp(x)+exp(1-x)) Informatik—Künstliche Intelligenz Computergestützte Statistik Technische [...] differenzierbare Funktionen Heuristiken, mit Glück (Evolutionäre Algorithmen, Randomisierte Suche) 8 von 15 Informatik—Künstliche Intelligenz Computergestützte Statistik Technische Universität Dortmund …

Simulation Time (t) D ea dl in e F ai lu re s (% ) 0 10 20 30 40 50 60 70 80 90 1 2 3 4 5 6 7 8 9 F ig .8 Scheduler Integration FTh=10 Periodic (70) Adj. Dynamic (70|20,01,65) Dynamic ( - |20,01,65) Joined [...] before next task instance : 0 - 20 Task Laxity before Deadline : 10 - 15 All tasks required the use of 4-8 files with an even mix of read and write operations. All tasks were defined to be non-critical with [...] Figures 7-9, where threshold FTh is varied from 1 to 20, shows an optimal setting of FTh to be 10(fig. 8). However, as FTh is increased or decreased the models performance degrades significantly resulting …

81.5 75.5 85.7 86.0 87.3 88.6 88.9 87.8 88.9 89.0 88.9 88.2 trade 50.0 77.4 59.2 77.4 69.2 75.5 76.6 77.3 77.1 76.9 78.0 77.8 76.8 interest 58.0 72.5 49.1 74.0 69.8 63.3 67.9 73.1 76.2 74.4 75.0 76.2 76 [...] 1 2 3 4 0.6 0.8 1.0 Pathology 52.7 50.8 47.6 53.4 50.3 54.9 57.2 58.2 56.7 57.4 58.1 Cardiovascular 72.4 70.1 70.5 72.6 71.1 76.2 77.6 77.3 77.2 77.5 77.6 Immunologic 61.7 58.0 58.8 66.8 69.7 73.2 73.5 [...] optimization problem: Minimize: jj~wjj (7) so that: 8i : yi[~w ~di + b] 1 (8) yi equals +1 (1), if document di is in class + (). The constraints (8) require that all training examples are classied correctly …

report.dvi

81.5 75.5 85.7 86.0 87.3 88.6 88.9 87.8 88.9 89.0 88.9 88.2 trade 50.0 77.4 59.2 77.4 69.2 75.5 76.6 77.3 77.1 76.9 78.0 77.8 76.8 interest 58.0 72.5 49.1 74.0 69.8 63.3 67.9 73.1 76.2 74.4 75.0 76.2 76 [...] 1 2 3 4 0.6 0.8 1.0 Pathology 52.7 50.8 47.6 53.4 50.3 54.9 57.2 58.2 56.7 57.4 58.1 Cardiovascular 72.4 70.1 70.5 72.6 71.1 76.2 77.6 77.3 77.2 77.5 77.6 Immunologic 61.7 58.0 58.8 66.8 69.7 73.2 73.5 [...] optimization problem: Minimize: jj~wjj (7) so that: 8i : yi[~w ~di + b] 1 (8) yi equals +1 (1), if document di is in class + (). The constraints (8) require that all training examples are classied correctly …

5 , 6 - ,!! 8 . ?, ?/- 5 6 , : 6 , 2 " /# ?! ,8:. 0 , 6# > 2"/#,# )5 1 : . ,#)6 +! 5 ! , ! "/2 2 6 !9< +! ,@,. , , +! -,, , , 8 - 6, . /5 , ! 1A !" [...] +, -./0 /1 2 0 ) 30 014# ' 30 5 1 6 ,,! ! 4 , ,1 ,, 74 , 8 !9: +, ! 02 ,8 ;6 % <11 $ ,#) 6 1. , , 6 0 . 6 [...] /. $ , , . <111 /5 6 ,#) 6 8 5 /$ !0 6 0 6 , . ! ! 5 8 > ,6 $ .! !6 $, ! &.,/ ! 5 , 5 # > , ! ? ! ? …