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Building LSTM Neural Network Based Speaker Identification System

Laurynas Dovydaitis Vytautas Rudžionis

https://doi.org/10.15181/csat.v6i1.1579

Pub. online: 22 Jun 2018 Type: Article

Open Access

Journal: Computational Science and Techniques Volume 6, Issue 1 (2018), pp. 574–580

Abstract

In this paper, we are analyzing the results of native Lithuanian speaker recognition and identification using long short-term memory deep neural network. We look at recognition accuracy and identify further potential improvements. Dataset used for training and speaker recognition consists of over 370 unique speakers, who provide their voice utterances in Lithuanian language. In this paper we present results that are derived from part of this dataset.

Investigating Some Strategies for Construction of Initial Populations in Genetic Algorithms

Alfonsas Misevičius Dovilė Kuznecovaitė

https://doi.org/10.15181/csat.v5i1.1277

Pub. online: 8 Jan 2018 Type: Article

Open Access

Journal: Computational Science and Techniques Volume 5, Issue 1 (2017), pp. 560–573

Abstract

Population initialization is one of the important tasks in evolutionary and genetic algorithms (GAs). It can affect considerably the speed of convergence and the quality of the obtained results. In this paper, some heuristic strategies (procedures) for construction of the initial populations in genetic algorithms are investigated. The purpose is to try to see how the different population initialization strategies (procedures) can influence the quality of the final solutions of GAs. Several simple procedures were algorithmically implemented and tested on one of the hard combinatorial optimization problems, the quadratic assignment problem (QAP). The results of the computational experiments demonstrate the usefulness of the proposed strategies. In addition, these strategies are of quite general character and may be easily transferred to other population-based metaheuristics (like particle swarm or bee colony optimization methods).

Variations on Agent-Oriented Programming

Dalia Baziukė Natalija Juščenko

https://doi.org/10.15181/csat.v5i1.1361

Pub. online: 28 Dec 2017 Type: Article

Open Access

Journal: Computational Science and Techniques Volume 5, Issue 1 (2017), pp. 541–559

Abstract

Occurrence of the agent paradigm and its further applications have stimulated the emergence of new concepts and methodologies in computer science. Today terms like multi-agent system, agent-oriented methodology, and agent-oriented programming (AOP) are widely used. The aim of this paper is to clarify the validity of usage of the terms AOP and AOP language. This is disclosed in two phases of an analysis process. Determining to which concepts, terms like agent, programming, object-oriented analysis and design, object-oriented programming, and agent-oriented analysis and design correspond is accomplished in the first phase. Analysis of several known agent system engineering methodologies in terms of key concepts used, final resulting artifacts, and their relationship with known programming paradigms and modern tools for agent system development is performed in the second phase. The research shows that in the final phase of agent system design and in the coding stage, the main artifact is an object, defined according to the rules of the object-oriented paradigm. Hence, we conclude that the computing society still does not have AOP owing to the lack of an AOP language. Thus, the term AOP is very often incorrectly assigned to agent system development frameworks that in all cases, transform agents into objects.

Rekurentinis paslėptųjų markovo modelių parametrų vertinimo algoritmas

Jūratė Vaičiulytė Leonidas Sakalauskas

https://doi.org/10.15181/csat.v5i1.1561

Pub. online: 28 Dec 2017 Type: Article

Open Access

Journal: Computational Science and Techniques Volume 5, Issue 1 (2017), pp. 529–540

Abstract

Šiame darbe sudarytas rekurentinis paslėptųjų Markovo modelių parametrų vertinimo algoritmas. Paslėptieji Markovo modeliai modeliuojami Gauso skirstiniu, kurio parametrai pasiskirstę pagal daugiamatį normalųjį dėsnį su nežinomais vidurkių vektoriumi ir kovariacijų matrica. Nežinomų parametrų įverčiai gaunami didžiausio tikėtinumo metodu. Rekurentinis algoritmas sudarytas remiantis didžiausio tikėtinumo metodu išvestomis formulėmis ir klasikiniu EM algoritmu. Kadangi rekurentinio algoritmo vykdymo laikas yra proporcingas apdorojamų stebėjimų skaičiui, tai jis gali būti naudojamas modelio parametrų vertinimui realiu laiku. Realizuoto rekurentinio EM algoritmo savybės buvo ištirtos kompiuteriniu eksperimentu klasterizuojant duomenis. Jis taip pat gali būti taikomas duomenų klasifikavimo ir atpažinimo realiu laiku uždaviniams spręsti.

Effective Algorithm for Calculation of Protons and Neutrons Distributions in Atomic Nucleus Shells

Algirdas Deveikis

https://doi.org/10.15181/csat.v5i1.1572

Pub. online: 28 Dec 2017 Type: Article

Open Access

Journal: Computational Science and Techniques Volume 5, Issue 1 (2017), pp. 519–528

Abstract

This paper presents the protons and neutrons distributions in atomic nucleus shells calculation algorithm which may be used for ab initio no-core nuclear shell model computations. The problem of enumeration of many-particle states is formulated on energetic basis instead of application of the traditional scheme for states classification. The algorithm provides calculations of protons and neutrons occupation restrictions for nuclear shells for an arbitrary number of oscillator quanta. The reported results show that the presented algorithm significantly outperforms the traditional approach and may fit the needs of state-of-the-art no-core shell model calculations of atomic nuclei.

Rec. kn.: The Second Crusade. Holy War on the Periphery of Latin Christendom (Outremer. Studies in the Crusades and the Latin East. Vol. 2). Ed. by Jason T. ROCHE, Janus Møller JENSEN. Turnhout: Brepols, 2015. – 338 p. ISBN 978-2-503-52327-9

Marius Ščavinskas

https://doi.org/10.15181/ahuk.v35i0.1883

Pub. online: 15 Dec 2017 Type: Book Review

Open Access

Journal: Acta Historica Universitatis Klaipedensis Volume 35 (2017): The Reformation in the Southeast Baltic Region = Reformacija Baltijos jūros pietryčių regione, pp. 255–261

Prūsijos valdžios aktų vertimo į lietuvių kalbą bylos atodangos: vienos polemikos istorija | On a Dispute over the Translation of Prussian Government Decrees Published in Lithuanian in the Late-18th Century

Žavinta Sidabraitė

https://doi.org/10.15181/ahuk.v35i0.1882

Pub. online: 15 Dec 2017 Type: Article

Open Access

Journal: Acta Historica Universitatis Klaipedensis Volume 35 (2017): The Reformation in the Southeast Baltic Region = Reformacija Baltijos jūros pietryčių regione, pp. 229–251

Abstract

The practice of translating government decrees into Lithuanian and publishing them for Lithuanian speakers living in Prussia has been known since the late 16th century. It stemmed from the policy of multi-lingualism which emerged under Duke Albert, and the establishment of the Reformation in Prussia. Most Lithuanian translations of Prussian government decrees known today date from the 18th century. At that time, the best experts in the Lithuanian language were engaged in their translation and publication. After the potential of Königsberg in Lithuanian studies declined in the second half of the 18th century, efforts to concentrate these activities in the area of Prussia that was still densely inhabited by Lithuanian speakers and called Lithuania at that time, became more active. The article analyses how this change was exploited by the Mielcke family, who were active in Prussian Lithuania. Christian Gottlieb Mielcke, who held a humble cantor’s position in the remote parish of Pillkallen, initiated a discussion on the principles of the edition of Lithuanian hymnals in 1781. His brother Daniel Friedrich, the priest at Ragnit, wrote a complaint about the quality of translations of government decrees into Lithuanian in 1788. This was the beginning of a dispute that eventually involved the Mielcke family in the translation of government decrees.

Daniel Ernst Jablonskis Wirken im Geist der Reformation, des Humanismus und der Frühaufklärung | Daniel Ernst Jablonski and his Activities in the Spirit of Humanism, the Reformation, and the Early Enlightenment

Hartmut Rudolph

https://doi.org/10.15181/ahuk.v35i0.1881

Pub. online: 15 Dec 2017 Type: Article

Open Access

Journal: Acta Historica Universitatis Klaipedensis Volume 35 (2017): The Reformation in the Southeast Baltic Region = Reformacija Baltijos jūros pietryčių regione, pp. 211–228

Abstract

He was a tutor for the Radvilas (Radziwiłłs) at Biržai, a student at Oxford, headmaster of a gymnasium in Leszno, and court preacher in Königsberg and later Berlin. Of all the stages in the life of Daniel Ernst Jablonski (1660–1741), his contribution, together with Gottfried Wilhelm Leibniz, to the establishment in 1700 of the Kurfürstlich Brandenburgische Societät der Wissenschaften, the predecessor of the Prussian Academy of Sciences, is emphasised the most. However, his efforts to achieve ecumenical communication between evangelical churches of various hues were no less significant. The article deals with the development of Jablonski’s views leading to these efforts as a result of his family history: the experiences of his childhood and youth. Manifestations of efforts in East Central Europe, especially in the Commonwealth of the Two Nations, are presented through Jablonski’s activities in pursuing ecclesiastical unity, defending the rights of religious minorities, engaging in Hebrew studies, and in the ecclesiastical controversy in Russia.

The Sources of the 1545 Old Prussian Language Catechisms

Darius Petkūnas

https://doi.org/10.15181/ahuk.v35i0.1880

Pub. online: 15 Dec 2017 Type: Article

Open Access

Journal: Acta Historica Universitatis Klaipedensis Volume 35 (2017): The Reformation in the Southeast Baltic Region = Reformacija Baltijos jūros pietryčių regione, pp. 189–208

Abstract

The Teutonic Order in Prussia recognised and acknowledged its responsibility to catechise both the German-speaking colonists and the native population. The Reformation made no radical changes to these requirements, but gave them serious attention. During the 1540s to the 1560s, several Catechisms for the non-German subjects of the Duke of Prussia were prepared and published in Königsberg, including three in the Old Prussian language. The editor of the first and second Old Prussian-language Catechisms published bilingual books, with the German Catechism on the left-hand page, and the same text on the right-hand page in the Old Prussian language. Reinhold Trautmann established that the source of the Decalogue in these books was Luther’s 1531 Small Catechism. However, he had difficulties confirming the sources of the remaining four parts of the Catechism, since he found a number of words and phrases which could not be identified as coming from Luther’s Catechisms. The article elaborates on Trautmann’s thesis that the source of the German Decalogue is Luther’s 1531 Enchiridion. In addition, it argues that the sources of the remaining parts of the Catechism were German-language catechetical and liturgical texts that were circulating in Prussia at that time.

Lithuania and the Lithuanians in the First World War. Bibliography, 1914–1945 | Lietuva ir lietuviai Pirmajame pasauliniame kare. Bibliografija (1914–1945)

Vasilijus Safronovas

https://doi.org/10.15181/ahuk.v34i0.1618

Pub. online: 15 Dec 2017 Type: Bibliography

Open Access

Journal: Acta Historica Universitatis Klaipedensis Volume 34 (2017): The Great War in Lithuania and Lithuanians in the Great War: Experiences and Memories = Didysis karas Lietuvoje ir lietuviai Didžiajame kare: patirtys ir atmintys, pp. 187–238

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