Krzysztof Czarnowski - Academia.edu (original) (raw)

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Papers by Krzysztof Czarnowski

Research paper thumbnail of On the Structure of Fixed Point Sets of “K-Set-Contractions” in B0 Spaces

Demonstratio Mathematica, 1997

This paper deals with characterization of sets of solutions of equations in locally convex linear... more This paper deals with characterization of sets of solutions of equations in locally convex linear topological spaces, or, to be more specific, in Bo spaces. We use topological degree methods to obtain our main Theorem (16). Theorem (16) is a generalization of Theorem [4;(2.2)], which applies to fixed point sets of compact maps in Bo spaces, to a broader class of "k-setcontractive" maps. It goes parallel to a theorem of W. V. Petryshyn [11] on fixed point sets properties of some k-set-contractions in Banach spaces. The required extension of the Banach space notion of measure of noncompactness and k-set-contraction to the case of a Bo space is done in the first part of the paper. Next we use the ideas of R. D. Nussbaum [10] to define a topological degree for some k-set-contractions in Bo spaces. The theory of k-set-contractive and more general condensing maps in locally convex linear topological spaces is also given in the paper of B. N. Sadovskii [12]. It should be stated t...

Research paper thumbnail of On the structure of the set of solutions of a Volterra integral equation in a Banach space

Annales Polonici Mathematici, 1994

Research paper thumbnail of Ultra-Compact NLU: Neuronal Network Binarization as Regularization

Interspeech 2019

This paper describes an approach for intent classification and tagging on embedded devices, such ... more This paper describes an approach for intent classification and tagging on embedded devices, such as smart watches. We describe a technique to train neuronal networks where the final neuronal network weights are binary. This enables memory bandwidth optimized inference and efficient computation even on constrained/embedded platforms. The flow of the approach is as follows: tf-idf word selection method reduces the number of overall weights. Bag-of-Words features are used with a feedforward and recurrent neuronal network for intent classification and tagging, respectively. A novel double Gaussian based regularization term is used to train the network. Finally, the weights are almost clipped lossless to −1 or 1 which results in a tiny binary neuronal network for intent classification and tagging. Our technique is evaluated using a text corpus of transcribed and annotated voice queries. The test domain is "lights control". We compare the intent and tagging accuracy of the ultra-compact binary neuronal network with our baseline system. The novel approach yields comparable accuracy but reduces the model size by a factor of 16: from 160kB to 10kB.

Research paper thumbnail of Structure of the set of solutions of an initial-boundary value problem for a parabolic partial differential equation in an unbounded domain

Nonlinear Analysis: Theory, Methods & Applications, 1996

Research paper thumbnail of Structure of the set of solutions of an initial-boundary value problem for a parabolic partial differential equation in an unbounded domain

Nonlinear Analysis: Theory, Methods & Applications, 1996

Research paper thumbnail of On the structure of fixed point sets of compact maps in B0 spaces with applications to integral and differential equations in unbounded domain

Journal of Mathematical Analysis and Applications, 1991

Research paper thumbnail of On the Structure of Fixed Point Sets of “K-Set-Contractions” in B0 Spaces

Demonstratio Mathematica, 1997

This paper deals with characterization of sets of solutions of equations in locally convex linear... more This paper deals with characterization of sets of solutions of equations in locally convex linear topological spaces, or, to be more specific, in Bo spaces. We use topological degree methods to obtain our main Theorem (16). Theorem (16) is a generalization of Theorem [4;(2.2)], which applies to fixed point sets of compact maps in Bo spaces, to a broader class of "k-setcontractive" maps. It goes parallel to a theorem of W. V. Petryshyn [11] on fixed point sets properties of some k-set-contractions in Banach spaces. The required extension of the Banach space notion of measure of noncompactness and k-set-contraction to the case of a Bo space is done in the first part of the paper. Next we use the ideas of R. D. Nussbaum [10] to define a topological degree for some k-set-contractions in Bo spaces. The theory of k-set-contractive and more general condensing maps in locally convex linear topological spaces is also given in the paper of B. N. Sadovskii [12]. It should be stated t...

Research paper thumbnail of On the structure of the set of solutions of a Volterra integral equation in a Banach space

Annales Polonici Mathematici, 1994

Research paper thumbnail of Ultra-Compact NLU: Neuronal Network Binarization as Regularization

Interspeech 2019

This paper describes an approach for intent classification and tagging on embedded devices, such ... more This paper describes an approach for intent classification and tagging on embedded devices, such as smart watches. We describe a technique to train neuronal networks where the final neuronal network weights are binary. This enables memory bandwidth optimized inference and efficient computation even on constrained/embedded platforms. The flow of the approach is as follows: tf-idf word selection method reduces the number of overall weights. Bag-of-Words features are used with a feedforward and recurrent neuronal network for intent classification and tagging, respectively. A novel double Gaussian based regularization term is used to train the network. Finally, the weights are almost clipped lossless to −1 or 1 which results in a tiny binary neuronal network for intent classification and tagging. Our technique is evaluated using a text corpus of transcribed and annotated voice queries. The test domain is "lights control". We compare the intent and tagging accuracy of the ultra-compact binary neuronal network with our baseline system. The novel approach yields comparable accuracy but reduces the model size by a factor of 16: from 160kB to 10kB.

Research paper thumbnail of Structure of the set of solutions of an initial-boundary value problem for a parabolic partial differential equation in an unbounded domain

Nonlinear Analysis: Theory, Methods & Applications, 1996

Research paper thumbnail of Structure of the set of solutions of an initial-boundary value problem for a parabolic partial differential equation in an unbounded domain

Nonlinear Analysis: Theory, Methods & Applications, 1996

Research paper thumbnail of On the structure of fixed point sets of compact maps in B0 spaces with applications to integral and differential equations in unbounded domain

Journal of Mathematical Analysis and Applications, 1991

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