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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 106
Káš, Martin , Polreich, Václav
Development of a Robust Wireless Mesh Network Modules for Proximity Sensing During Assembly Process of a Steam Turbine

This paper deals with a design of wireless proximity sensing between the stator and rotor of a steam turbine during a final steps of an assembly. The result of this assembly process is an optimal setting of the seal which affects overall turbine efficiency. An innovative&...

Neduchal, Petr , Železný, Miloš
Environment Classification Approach for Mobile Robots

The type of environment plays an essential role in mobile robotics. Autonomous robots usually work in static and single type environments. Unfortunately, in the real world, there are many situations when the type of the environment changes. This paper deals with the design of ...

Matoušek, Jindřich , Vraštil, Michal
Context-Aware XGBoost for Glottal Closure Instant Detection in Speech Signal

In this paper, we continue to investigate the use of classifiers for the automatic detection of glottal closure instants (GCIs) in the speech signal. We introduce context to extreme gradient boosting (XGBoost) and show that the context-aware XGBoost outperforms its context-free version. ...

Švec, Jan , Lehečka, Jan , Šmídl, Luboš , Ircing, Pavel
Automatic Correction of i/y Spelling in Czech ASR Output

This paper concentrates on the design and evaluation of the method that would be able to automatically correct the spelling of i/y in the Czech words at the output of the ASR decoder. After analysis of both the Czech grammar rules and the data, we have decided&#...

Hanzlíček, Zdeněk , Vít, Jakub
LSTM-Based Speech Segmentation Trained on Different Foreign Languages

This paper describes experiments on speech segmentation by using bidirectional LSTM neural networks. The networks were trained on various languages (English, German, Russian and Czech), segmentation experiments were performed on 4 Czech professional voices. To be able to use various combinations&...

Liška, Jindřich , Jakl, Jan , Künkel, Sven
ERROR CONSIDERATIONS FOR TURBINE-GENERATOR TORSIONAL VIBRATION MONITORING

Turbine-generator torsional vibration is linked to electrical events in the power grid by the generator air-gap torque. Modern power systems are subject to gradual transformation by increasing flexibility demands and incorporation of renewable resources. As a result, electrical transient events a...

Joly, Alexis , Goëau, Hervé , Kahl, Stefan , Deneu, Benjamin , Servajean, Maximillien , Cole, Elijah , Picek, Lukáš , de Castañeda, Rafael Ruiz , Bolon, Isabelle , Durso, Andrew , Lorieul, Titouan , Botella, Christophe , Glotin, Hervé , Champ, Julien , Eggel, Ivan , Vellinga, Willem-Pier , Bonnet, Pierre , Müller, Henning
Overview of LifeCLEF 2020: A System-Oriented Evaluation of Automated Species Identification and Species Distribution Prediction

Building accurate knowledge of the identity, the geographic distribution and the evolution of species is essential for the sustainable development of humanity, as well as for biodiversity conservation. However, the difficulty of identifying plants and animals in the field is hindering the&#x...

Jiřík, Miroslav , Moulisová, Vladimíra , Schindler, Claudia , Červenková, Lenka , Pálek, Richard , Rosendorf, Jáchym , Arlt, Janine , Bolek, Lukáš , Dejmek, Jiří , Dahmen, Uta , Jiříková, Kamila , Gruber, Ivan , Liška, Václav , Železný, Miloš
MicrAnt: Towards Regression Task Oriented Annotation Tool for Microscopic Image

Annotating a dataset for training a Supervised Machine Learning algorithm is time and annotator’s attention intensive. Our goal was to create a tool that would enable us to create annotations of the dataset with minimal demands on expert’s time. Inspired by applications such as...

Vaníček, Ondřej , Chaluš, Michal , Liška, Jindřich
Automatic Navigation System for 3D Robotic Laser Cladding

This paper presents an innovative approach to 3D robotic laser cladding of complex workpieces. To begin, the article brings a brief introduction to the problem and discusses the current state-of-the-art. Next, there is a description of the proposed algorithm which uses data from a&...

Chaluš, Michal , Vaníček, Ondřej , Liška, Jindřich
Finding Optimal Sensor Positions for Hand-Eye Calibration

A hand-eye calibration is used to find the relative position between a robot flange and a mounted sensor, which is a very important knowledge for the automatic control of robotic laser welding systems. Most of the articles deal with a mathematical solution of the equation ...

Bouček, Zdeněk , Flídr, Miroslav
Interpolating Control Based Trajectory Tracking

The paper is dealing with a modification of Interpolating Control (IC) for the employment in trajectory tracking problem with inherent constraints. First, the Optimal Control Problem (OCP) with reference trajectory tracking is described. The OCP is hard to solve analytically, thus, two ...

Havlík, Jindřich , Straka, Ondřej
Measures of Nonlinearity and non-Gaussianity in Orbital Uncertainty Propagation

Orbit uncertainty propagation (OUP) is an important tracking problem appearing in space situational awareness. The uncertainty, which is initially approximately Gaussian, is transformed by the time propagation and eventually becomes non-Gaussian. Gaussian representation of the uncertainty becomes gradually ...

Přibil, Jiří , Přibilová, Anna , Matoušek, Jindřich
Synthetic Speech Evaluation by 2D GMM Classification in Pleasure-Arousal Scale

The paper is focused on a description of a system for automatic evaluation of synthetic speech quality based on two-dimensional detection in the Pleasure-Arousal (P-A) scale. The original speech material of a speaker used for synthesis is compared with the synthesized one to find&#...

Zelinka, Jan , Kanis, Jakub
Neural Sign Language Synthesis: Words Are Our Glosses

This paper deals with a text-to-video sign language synthesis. Instead of direct video production, we focused on skeletal models production. Our main goal in this paper was to design a fully end-to-end automatic sign language synthesis system trained only on available free data (da...

Ausberger, Tomáš , Kubíček, Karel , Medvecová, Pavla , Myslivec, Tomáš , Štětina, Milan
Analytic method for automatic test case generation for Function Block Diagram

Any Instrumentation and Control (I&C) system has to be properly tested to minimize the risk of faults in the system. This is even more crucial if the I&C system implements a safety function. The function of the I&C is often designed in a form of Function ...

Lehečka, Jan , Švec, Jan , Ircing, Pavel , Šmídl, Luboš
BERT-Based Sentiment Analysis Using Distillation

In this paper, we present our experiments with BERT (Bidirectional Encoder Representations from Transformers) models in the task of sentiment analysis, which aims to predict the sentiment polarity for the given text. We trained an ensemble of BERT models from a large self-collected ...

Ausberger, Tomáš , Kubíček, Karel , Medvecová, Pavla , Myslivec, Tomáš , Štětina, Milan
Model Checking application on Function Block Diagram model

Model Checking represents a mathematical method of formal verification which can prove that model satisfies its specified requirements. This article describes an approach that utilizes Function Block Diagram (FBD) models. The key benefit of this approach is the automatic transformation of th...

Konovalov, D.E. , Vrazhevsky, S.A. , Furtat, I.B. , Kremlev, A.S. , Čech, Martin
Output Feedback Control for MIMO systems with Disturbances Compensation

The paper deals with the novel feedback output control law for multiple-input multiple-output (MIMO) plant with mismatched bounded disturbances. The plant model is described by linear and Lipshitz nonlinear terms. The control law is based on the auxiliary loop method for disturbance est...

Fehér, Marek , Straka, Ondřej
Time-to-go function of double-integrator system with asymmetrical constraints

The paper addresses the problem of searching the time-to-go function of a double-integrator system with asymmetrically constrained state and control and presents its general analytical solution. The paper further discusses application of the solution in the model predictive control where the ...

Ajgl, Jiří , Straka, Ondřej
Evaluation of Confidence Sets for Estimation with Piecewise Linear Constraint

Equality constrained estimation finds its application in problems like positioning of cars on roads. This paper compares two constructions of confidence sets. The first one is given by the intersection of a standard unconstrained confidence set and the constraint, the second one applies...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 106