i.cs.uni-dortmund.de/LEHRE/VORLESUNGEN/KDD/SS15/DATA/svm-data.csv -5 -4 -3 -2 -1 0 1 2 3 4 5 -5 -4 -3 -2 -1 0 1 2 3 4 5 1. (2 Punkte) Beschreiben Sie, wie Sie die gegebenen Daten trennen würden! Geben [...] Datenpunkte hat. 1. (1 Punkt) Beschreiben Sie in wenigen Worten beide Strategien (OVA), (OVO). 2. (1 Punkt) Wie viele 2-Klassen-SVM müssen Sie für beide Strategien trainieren? 3. (1 Punkt) Wie viele [...] R4.005 Übungen zur Vorlesung Wissensentdeckung in Datenbanken Sommersemester 2015 Blatt 8 Aufgabe 8.1 (4 Punkte) Betrachten Sie den folgenden Datensatz! Fällt Ihnen eine Transformation ein, die zu einer …

Inverted files

n Inverted File:  bzw. 3  die1,2,3  Spanien3  Deutschland1,2,3  Hauptstadt1,2  Hauptstädte 3  heißen3  heißt1  ist2  Madrid3  Berlin1,2,3  von1,2,3 7 Inverted Files- Implementierung [...] • Hauptstädte • heißen • heißt • ist • Madrid • Berlin • von Posting File 3 1, 2, 3 3 1, 2, 3 1, 2 3 3 1, 2 2 3 1, 2, 3 1, 2, 3 Inverted Files Vor- und Nachteile Vorteile:  Schneller Zugriff auf Terme [...] Emel Günal 1 Inhalt  Einführung  Index - Inverted Files - Indexkonstruktion - Indexverwaltung  Optimierung - Indexkompression  Weitere Ansätze zur Indexierung 2 Einführung Wie suchen wir? 1) Angabe einer …

05_2_moschitti_214.pdf

productions at n1 and n2 are the same, and n1 and n2 are not pre-terminals then ∆(n1, n2) = nc(n1)∏ j=1 (σ + ∆(cj n1 , cj n2 )) (2) where σ ∈ {0, 1}, nc(n1) is the number of the children of n1 and cj n is [...] fragments {f1, f2, ..} = F , we defined the indicator function Ii(n) which is equal 1 if the target fi is rooted at node n and 0 other- wise. We define K(T1, T2) = ∑ n1∈NT1 ∑ n2∈NT2 ∆(n1, n2) (1) where NT1 and [...] modi- fying steps (2) and (3) as follows1: 2. ∆(n1, n2) = λ, 3. ∆(n1, n2) = λ ∏nc(n1) j=1 (σ + ∆(cj n1 , cj n2 )). The computational complexity of Eq. 1 is O(|NT1 | × |NT2 |). We will refer to this basic …

05_2_moschitti_214.pdf

productions at n1 and n2 are the same, and n1 and n2 are not pre-terminals then ∆(n1, n2) = nc(n1)∏ j=1 (σ + ∆(cj n1 , cj n2 )) (2) where σ ∈ {0, 1}, nc(n1) is the number of the children of n1 and cj n is [...] fragments {f1, f2, ..} = F , we defined the indicator function Ii(n) which is equal 1 if the target fi is rooted at node n and 0 other- wise. We define K(T1, T2) = ∑ n1∈NT1 ∑ n2∈NT2 ∆(n1, n2) (1) where NT1 and [...] modi- fying steps (2) and (3) as follows1: 2. ∆(n1, n2) = λ, 3. ∆(n1, n2) = λ ∏nc(n1) j=1 (σ + ∆(cj n1 , cj n2 )). The computational complexity of Eq. 1 is O(|NT1 | × |NT2 |). We will refer to this basic …

represent the area under the curve. Abbildung 1: Example ROC space for Aufgabe 12.1 Aufgabe 12.1 (5 Punkte) On June 30, we have learned about Subgroup Discovery. 1. (2 Punkte) What is the sensitivity of a rule [...] Datenpunkte im Euklidischen Raum (siehe auch Abbildung 2): Punkt A B C D E F G H x 0 1 1 3 5 5 8 11 y 9 8 5 1 2 0 5 5 1. (2 Punkte) Führen Sie den K-Means-Algorithmus mit k = 3 per Hand aus. Normaler- weise [...] the ROC space in Abbildung 1. Where in the Figure would we find the following rules: 2. (1 Punkt) the empty rule h∅, which is the rule covering no examples in the dataset; 3. (1 Punkt) the complete rule …

joachims_175.dvi

pute its inverse in closed form. (YXTF1XY )1 = ~pTF1~p ~pTF1~n ~nTF1~p ~nTF1~n 1 (22) = a b b c 1 (23) = 1 ac b2 a b b c (24) Substituting into (21) completes the proof. The lemma shows that any [...] R2 n+1 a+2b+c acb2 with a = sP i=1 p2i fi b = sP i=1 pini fi c = sP i=1 n2i fi R2= dP r=1 c (r+k) 2 unless 8si=1 : pi = ni. d is chosen so that dP r=1 c (r+k) = l. For unbiased SVMs equals 1, and for [...] optimization problem [18]. Optimization Problem 1 (SVM (primal)). minimize: V (~w; b; ~) = 1 2 ~w ~w + C nX i=1 i (1) subj. to: 8ni=1 : yi[~w ~xi + b] 1 i (2) 8ni=1 : i > 0 (3) The constraints (2) require that …