TY - JOUR AU - Dellnitz, Michael AU - Froyland, Gary AU - Sertl, Stefan ID - 16554 JF - Nonlinearity SN - 0951-7715 TI - On the isolated spectrum of the Perron-Frobenius operator ER - TY - CHAP AU - Junge, Oliver ID - 16616 SN - 9789810243593 T2 - Equadiff 99 TI - Rigorous discretization of subdivision techniques ER - TY - JOUR AU - Czumaj, Artur AU - Meyer auf der Heide, Friedhelm AU - Stemann, Volker ID - 17010 JF - SIAM Journal on Computing SN - 0097-5397 TI - Contention Resolution in Hashing Based Shared Memory Simulations ER - TY - CHAP AU - Dellnitz, Michael AU - Junge, Oliver AU - Rumpf, Martin AU - Strzodka, Robert ID - 17018 SN - 9789810243593 T2 - Equadiff 99 TI - The computation of an unstable invariant set inside a cylinder containing a knotted flow ER - TY - JOUR AU - Eisenring, Michael AU - Platzner, Marco ID - 10606 JF - IEE Proceedings -- Computers & Digital Techniques TI - Synthesis of Interfaces and Communication in Reconfigurable Embedded Systems VL - 147 ER - TY - JOUR AU - Platzner, Marco AU - Rinner, Bernhard AU - Weiss, Reinhold ID - 10725 IS - 2 JF - IEEE Intelligent Systems TI - Toward embedded qualitative simulation: a specialized computer architecture for QSim VL - 15 ER - TY - CONF AB - The traditional way to find a linear solution to the feature extraction problem is based on the maximization of the class-between scatter over the class-within scatter (Fisher mapping). For the multi-class problem this is, however, sub-optimal due to class conjunctions, even for the simple situation of normal distributed classes with identical covariance matrices. We propose a novel, equally fast method, based on nonlinear PCA. Although still sub-optimal, it may avoid the class conjunction. The proposed method is experimentally compared with Fisher mapping and with a neural network based approach to nonlinear PCA. It appears to outperform both methods, the first one even in a dramatic way. AU - Duin, Robert P.W. AU - Loog, Marco AU - Haeb-Umbach, Reinhold ID - 11758 T2 - International Conference on Pattern Recognition (ICPR 2000) TI - Multi-class Linear Feature Extraction by Nonlinear PCA ER - TY - CONF AU - Haeb-Umbach, Reinhold ID - 11779 T2 - International Conference on Spoken Language Processing (ICSLP 2000) TI - Data-driven Phonetic Regression Class Tree Estimation for MLLR Adaptation ER - TY - CONF AB - Amongst several data driven approaches for designing filters for the time sequence of spectral parameters, the linear discriminant analysis (LDA) based method has been proposed for automatic speech recognition. Here we apply LDA-based filter design to cepstral features, which better match the inherent assumption of this method that feature vector components are uncorrelated. Extensive recognition experiments have been conducted both on the standard TIMIT phone recognition task and on a proprietary 130-words command word task under various adverse environmental conditions, including reverberant data with real-life room impulse responses and data processed by acoustic echo cancellation algorithms. Significant error rate reductions have been achieved when applying the novel long-range feature filters compared to standard approaches employing cepstral mean normalization and delta and delta-delta features, in particular when facing acoustic echo cancellation scenarios and room reverberation. For example, the phone accuracy on reverberated TIMIT data could be increased from 50.7\% to 56.0\% AU - Lieb, M. AU - Haeb-Umbach, Reinhold ID - 11869 KW - acoustic echo cancellation algorithms KW - adverse environmental conditions KW - automatic speech recognition KW - cepstral analysis KW - cepstral features KW - cepstral mean normalization KW - command word task KW - delta-delta features KW - delta features KW - echo suppression KW - error rate reductions KW - feature vector components KW - FIR filters KW - LDA derived cepstral trajectory filters KW - linear discriminant analysis KW - long-range feature filters KW - phone accuracy KW - real-life room impulse responses KW - reverberant data KW - spectral parameters KW - speech recognition KW - standard TIMIT phone recognition task T2 - IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2000) TI - LDA derived cepstral trajectory filters in adverse environmental conditions VL - 2 ER - TY - CONF AU - Loog, M. AU - Haeb-Umbach, Reinhold ID - 11871 T2 - International Conference on Spoken Language Processing (ICSLP 2000) TI - Multi-class Linear Dimension Reduction by Generalized Fisher Criteria ER - TY - CONF AU - Hüllermeier, Eyke ED - Dubois, D.M. ID - 15301 T2 - in Proceedings CASYS-2000, 4th International Conference on Computing Anticipatory Systems Liège, Belgium TI - Fuzzy dynamics: Methodological framework and applications of compartmental modeling ER - TY - CONF AU - Gueroguieva, I. AU - Nestorov, I. AU - Rowland, M. AU - Hüllermeier, Eyke ID - 15302 T2 - in Proceedings EUFEPS-2000, 6th European Congress of Pharmaceutical Sciences, Supplement 1 TI - In vitro-in vivo hepatic clearance prediction using fuzzy sets VL - 11 ER - TY - JOUR AB - Recently there has been increased demand for chemicaJ sensors measuring in-line the concentration of selected substances in complex liquids in order to guarantee a high product quality in the process industry. At present there is a great interest in acoustic sensor systems for concentration measurements. This article presents a new ultrasonic sensor system consisting of a miniaturized multi-sensor arrangement for the comprehensive acoustic characterization of liquid mixtures. The sensor system measures sound velocity, impedance coefficient, attenuation coefficient an9 temperature. AU - Henning, Bernd AU - Daur, Peter-Christoph AU - Prange, Stefan AU - Dierks, Karsten AU - Hauptmann, Peter ID - 15389 JF - Ultrasonics TI - In-line concentration measurement in complex liquids using ultrasonic sensors ER - TY - CONF AU - Dubois, D. AU - Hüllermeier, Eyke AU - Prade, H. ID - 15808 T2 - In Proceedings RàPC-2000, Raisonnement à partir de Cas, Toulouse, France TI - Flexible control of case-based prediction in the framework of possibility theory ER - TY - CONF AU - Hüllermeier, Eyke ED - Horn, W. ID - 14844 T2 - In Proceedings ECAI-2000, 14th European Conference on Artificial Inteligence, Berlin, Germany TI - Similarity-based inference as evidential reasoning ER - TY - CONF AU - Hüllermeier, Eyke ED - Horn, W. ID - 14845 T2 - In Proceedings ECAI-2000, 14th European Conference on Artificial Inteligence, Berlin, Germany TI - Focusing search by using problem solving experience ER - TY - JOUR AU - König, Rolf AU - Sureth-Sloane, Caren ID - 14977 IS - 1 JF - Das Wirtschaftsstudium TI - Investitionen, Realoptionen und Steuern unter Unsicherheit VL - 29 ER - TY - JOUR AU - Sureth-Sloane, Caren ID - 14978 JF - Schmalenbachs Zeitschrift für betriebswirtschaftliche Forschung TI - Rezension: Kiesewetter, Dirk, Zinsbereinigte Einkommen- und Körperschaftsteuer VL - 52 ER - TY - GEN AU - Sureth-Sloane, Caren ID - 14979 TI - The Influence of Taxation on Partially Irreversible Investment Decisions – A Real Option Approach VL - 462 ER - TY - CONF AU - Hüllermeier, Eyke ID - 15063 T2 - Proceedings AAAI 2000, 17th National Conference on Artificial Intelligence, Austin, Texas TI - Change detection in heuristic search ER -