Formulation of Small Test Sets Using Large Test Sets for Efficient Assessment of Quantum Chemistry Methods

2018 ◽  
Vol 14 (8) ◽  
pp. 4254-4262 ◽  
Author(s):  
Bun Chan
Keyword(s):  
Quantum Chemistry ◽  
Small Test ◽  
Test Sets

scholarly journals A Novel Two-Stage Illumination Estimation Framework for Expression Recognition

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Zheng Zhang ◽  
Guozhi Song ◽  
Jigang Wu
Keyword(s):  
Three Dimensional ◽  
Facial Appearance ◽  
Expression Recognition ◽  
Two Stage ◽  
Illumination Estimation ◽  
3D Face ◽  
Critical Issues ◽  
Negative Effect ◽  
Small Test ◽  
Test Sets

One of the critical issues for facial expression recognition is to eliminate the negative effect caused by variant poses and illuminations. In this paper a two-stage illumination estimation framework is proposed based on three-dimensional representative face and clustering, which can estimate illumination directions under a series of poses. First, 256 training 3D face models are adaptively categorized into a certain amount of facial structure types byk-means clustering to group people with similar facial appearance into clusters. Then the representative face of each cluster is generated to represent the facial appearance type of that cluster. Our training set is obtained by rotating all representative faces to a certain pose, illuminating them with a series of different illumination conditions, and then projecting them into two-dimensional images. Finally the saltire-over-cross feature is selected to train a group of SVM classifiers and satisfactory performance is achieved when estimating a number of test sets including images generated from 64 3D face models kept for testing, CAS-PEAL face database, CMU PIE database, and a small test set created by ourselves. Compared with other related works, our method is subject independent and has less computational complexityO(C×N)without 3D facial reconstruction.

Linguistische Fairness und differentielle Validität des Auditiven Wortlisten Lerntests (AWLT) bei Demenz vom Alzheimer-Typ

Diagnostica ◽  
2019 ◽  
Vol 65 (4) ◽  
pp. 193-204
Author(s):  
Johannes Baltasar Hessler ◽  
David Brieber ◽  
Johanna Egle ◽  
Georg Mandler ◽  
Thomas Jahn
Keyword(s):  
Cognitive Functions ◽  
Kognitive Funktionen ◽  
Alzheimer Demenz ◽  
Test Sets

Zusammenfassung. Der Auditive Wortlisten Lerntest (AWLT) ist Teil des Test-Sets Kognitive Funktionen Demenz (CFD; Cognitive Functions Dementia) im Rahmen des Wiener Testsystems (WTS). Der AWLT wurde entlang neurolinguistischer Kriterien entwickelt, um Interaktionen zwischen dem kognitiven Status der Testpersonen und den linguistischen Eigenschaften der Lernliste zu reduzieren. Anhand einer nach Alter, Bildung und Geschlecht parallelisierten Stichprobe von gesunden Probandinnen und Probanden ( N = 44) und Patientinnen und Patienten mit Alzheimer Demenz ( N = 44) wurde mit ANOVAs für Messwiederholungen überprüft, inwieweit dieses Konstruktionsziel erreicht wurde. Weiter wurde die Fähigkeit der Hauptvariablen des AWLT untersucht, zwischen diesen Gruppen zu unterscheiden. Es traten Interaktionen mit geringer Effektstärke zwischen linguistischen Eigenschaften und der Diagnose auf. Die Hauptvariablen trennten mit großen Effektstärken Patientinnen und Patienten von Gesunden. Der AWLT scheint bei vergleichbarer differenzieller Validität linguistisch fairer als ähnliche Instrumente zu sein.

Quantum Chemistry.

1958 ◽  
Vol 17 (3_4) ◽  
pp. 279-280
Author(s):  
Th. Förster
Keyword(s):  
Quantum Chemistry

Propagators in Quantum Chemistry

1975 ◽  
Vol 95 (4-6) ◽  
pp. 318-319
Author(s):  
W. A. Bingel
Keyword(s):  
Quantum Chemistry

A diatribe in quantum chemistry

2000 ◽  
Author(s):  
Vassiliki-Alexandra Glezakou
Keyword(s):  
Quantum Chemistry
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