Papers by Byoung-Tak Zhang
The 24th International Conference on DNA Computing and Molecular Programming (poster), 2018
Materials Science-Poland, 2011
The 0.935(Bi 0.5 Na 0.5 ) TiO 3 -0.065BaTiO 3 (abbreviated as BNT6.5BT) lead-free ceramics were p... more The 0.935(Bi 0.5 Na 0.5 ) TiO 3 -0.065BaTiO 3 (abbreviated as BNT6.5BT) lead-free ceramics were prepared by conventional solid state sintering technique. The effects of sintering temperature (1150-1200 • C) and poling condition on its piezoelectric properties were examined. Piezoelectric properties like the piezoelectric constant (d 33 ) and electromechanical factors (k p , k t ) depend on the poling field and poling temperature, whereas different poling times, in the 5-30 min range, were not observed to have any significant effect on the piezoelectric properties. With respect to piezoelectric properties, the chosen sintering temperature range is suitable for BNT6.5BT ceramics.
Continuous estimation of distribution algorithms with probabilistic principal component analysis
Proceedings of the 2001 Congress on Evolutionary Computation (IEEE Cat. No.01TH8546), 2001
Many evolutionary algorithms have been studied to build and use a probability distribution model ... more Many evolutionary algorithms have been studied to build and use a probability distribution model of the population for optimization problems. Most of these methods tried to represent explicitly the relationship between variables in the problem with factorization techniques or a graphical model such as Bayesian or Gaussian networks. Thus enormous computational cost is required for constructing those models when the
Applying Machine Learning Techniques to Analysis of Gene Expression Data: Cancer Diagnosis
Methods of Microarray Data Analysis, 2002
Abstract Classification of patient samples is a crucial aspect of cancer diagnosis. DN A hybridiz... more Abstract Classification of patient samples is a crucial aspect of cancer diagnosis. DN A hybridization arrays simultaneously measure the expression levels of thousands of genes and it has been suggested that gene expression may provide the additional information ...
Proceedings of the 2002 Congress on Evolutionary Computation. CEC'02 (Cat. No.02TH8600), 2002
Genetic Programming with Active Data Selection
Lecture Notes in Computer Science, 1999
Genetic programming evolves Lisp-like programs rather than xed size linear strings. This represen... more Genetic programming evolves Lisp-like programs rather than xed size linear strings. This representational power combined with gen- erality makes genetic programming an interesting tool for automatic pro- gramming and machine learning. One weakness is the enormous time re- quired for evolving complex programs. In this paper we present a method for accelerating evolution speed of genetic programming by active selec-
Lecture Notes in Computer Science, 2004
In this paper, we presents an adaptive neural network based clustering method to group protein-pr... more In this paper, we presents an adaptive neural network based clustering method to group protein-protein interaction data according to their functional categories for new protein interaction prediction in conjunction with information theory based feature selection. Our technique for grouping protein interaction is based on ART-1 neural network. The cluster prototype constructed with existing protein interaction data is used to predict the class of new protein interactions. The protein interaction data of S.cerevisiae (bakers yeast) from MIPS and SGD are used. The clustering performance was compared with traditional k-means clustering method in terms of cluster distance. According to the experimental results, the proposed method shows about 89.7% clustering accuracy and the feature selection filter boosted overall performances about 14.8%. Also, inter-cluster distances of cluster constructed with ART-1 based clustering method have shown high cluster quality.
Proceedings of the 5th international conference on Intelligent user interfaces - IUI '00, 2000
This paper describes a method for learning user's interests in the Web-based personalized informa... more This paper describes a method for learning user's interests in the Web-based personalized information filtering system called WAIR. The proposed method analyzes user's reactions to the presented documents and learns from them the profiles for the individual users. Reinforcement learning is used to adapt the term weights in the user profile so that user's preferences are best represented. In contrast to conventional relevance feedback methods which require explicit user feedbacks, OUT approach learns user preferences implicitly from direct observations of user behaviors during interaction. Field tests have been made which involved 7 users reading a total of 7,700 HTML documents during 4 weeks. The proposed method showed superior performance in personalized information filtering compared to the existing relevance feedback methods.
Proceedings of the fourth international conference on Autonomous agents - AGENTS '00, 2000
This paper describes a method for an information filtering agent to learn user's preferences. The... more This paper describes a method for an information filtering agent to learn user's preferences. The proposed method observes user's reactions to the filtered documents and learns from them the profiles for the individual users. Reinforcement learning is used to adapt the most significant terms that best represent user's interests. In contrast to conventional relevance feedback methods which require explicit user feedbacks, our approach learns user preferences implicitly from direct observations of browsing behaviors during interaction. Field tests have been made which involved 10 users reading a total of 18,750 HTML documents during 45 days. The proposed method showed superior performance in personalized information filtering compared to the existing relevance feedback methods.
Investigation of conducted disturbance from driving system in fuel cell bus
2007 18th International Zurich Symposium on Electromagnetic Compatibility, 2007
Full-scale evaluating and improving the EMC (Electromagnetic Compatibility) of vehicle is the nec... more Full-scale evaluating and improving the EMC (Electromagnetic Compatibility) of vehicle is the necessary insurance for the safety of the vehicle. This paper presents some of the research results on the conducted disturbance from the driving system in a fuel cell city bus. First, the distribution of the disturbance source in the driving system surveyed by measurement is introduced. Then, its generating mechanics are discussed. The high-frequency circuit models of the fuel cell, the inverter, and the AC motor are set up. The conductive disturbance propagation along cable is analyzed by numerical simulation. Finally, measures to restrain the disturbance propagation are also discussed.
Lecture Notes in Computer Science, 2006
With the availability of the time series data from the high-throughput technologies, diverse appr... more With the availability of the time series data from the high-throughput technologies, diverse approaches have been proposed to model gene regulatory networks. Compared with others, S-system has the advantage for these tasks in the sense that it can provide both quantitative (structural) and qualitative (dynamical) modeling in one framework. However, it is not easy to identify the structure of the true network since the number of parameters to be estimated is much larger than that of the available data. Moreover, conventional parameter estimation requires the time-consuming numerical integration to reproduce dynamic profiles for the S-system. In this paper, we propose multi-stage evolutionary algorithms to identify gene regulatory networks efficiently. With the symbolic regression by genetic programming (GP), we can evade the numerical integration steps. This is because the estimation of slopes for each time-course data can be obtained from the results of GP. We also develop hybrid evolutionary algorithms and modified fitness evaluation function to identify the structure of gene regulatory networks and to estimate the corresponding parameters at the same time. By applying the proposed method to the identification of an artificial genetic network, we verify its capability of finding the true S-system.
Blood, Jan 15, 1996
During 24 weeks of hydroxyurea treatment, we monitored red blood cell (RBC) parameters in three p... more During 24 weeks of hydroxyurea treatment, we monitored red blood cell (RBC) parameters in three patients with sickle cell disease, including F-cell and F-reticulocyte profiles, distributions of delay times for intracellular polymerization, sickle erythrocyte adherence to human umbilical vein endothelial cells in a laminar flow chamber, RBC phthalate density profiles, mean corpuscular hemoglobin concentration and cation content, reticulocyte mean corpuscular hemoglobin concentration, 1H-nuclear magnetic resonance transverse relaxation rates of packed RBCs, and plasma membrane lateral and rotational mobilities of band 3 and glycophorins. Hydroxyurea increases the fraction of cells with sufficiently long delay times to escape the microcirculation before polymerization begins. Furthermore, high pretreatment adherence to human umbilical vein endothelial cells of sickle RBCs decreased to normal after only 2 weeks of hydroxyurea treatment, preceding the increase in fetal hemoglobin levels....
Rhombohedral–orthorhombic phase coexistence and electrical properties of Ta and BaZrO 3 co-modified (K, Na) NbO 3 lead-free ceramics
ABSTRACT
![Research paper thumbnail of [The effects of feeding methods on deciduous caries.]](https://a.academia-assets.com/images/blank-paper.jpg)
[The effects of feeding methods on deciduous caries.]
The goal of this study was to explore the relationship between feeding methods and deciduous cari... more The goal of this study was to explore the relationship between feeding methods and deciduous caries. An investigation on children's feeding methods, caries prevalence and dmft was made, using 260 cases which were provided with whole primary teeth. Chi-square test was used for statistical analysis on feeding methods and caries prevalence, and variance analysis was used on feeding methods and dmft. The results showed that the deciduous caries rate, mean dmft in breast feeding (BF) group were lower than those in mixed feeding (MF) group and artificial feeding (AF) group, there were significant differences between BF group and MF group,also between BF group and AF group. But there were no significant differences between MF group and AF group. It is concluded that proper breast feeding seems to be important for preventing deciduous caries.
The investigation of the application of PACS
Experimental study on properties of concrete exposed to elevated temperatures at various heated time [J]
Study on the Application of the Decoupling Transformation in Power System Transient Protection [J]
Climatological simulation of Kuroshio in the East China Sea
Integrated protection of a single bus based on Karrenbauer transformation
Effects of Cold Pretreatment and Low Temperature Pre-culture on the Callus Inducti on Rate on Anther Culture of Alfalfa [J]
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Papers by Byoung-Tak Zhang