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Tytuł:
Ontology-driven diagnostic modeling
Autorzy:
Cholewa, W.
Powiązania:
https://bibliotekanauki.pl/articles/175146.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
statement network
knowledge representation
Opis:
The paper presents a concept of diagnostic network models. This class of models consists of statement networks in which nodes represent statements concerning an object. The advantages of such models were enumerated and, in particular, their usefulness in collaborative research on knowledge acquisition was emphasized. Furthermore, not only the significance of dictionaries of statements contents, but also the purposefulness of supporting the development process of the models in question through definition of ontology referring to the studied objects was discussed.
Źródło:
Transactions of the Institute of Fluid-Flow Machinery; 2016, 134; 3-10
0079-3205
Pojawia się w:
Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structural representations of unstructured knowledge
Autorzy:
Traczyk, W.
Powiązania:
https://bibliotekanauki.pl/articles/309054.pdf
Data publikacji:
2005
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
textual knowledge
knowledge representation languages
ontology
Opis:
Knowledge should be represented in a formal, structured manner if we want to process and manage it. Unfortunately a source knowledge presented in many documents has informal, unstructured shape. The goal of these considerations is to present the methods of translation from the textual, unstructured knowledge to the structured knowledge, preserving textual form.
Źródło:
Journal of Telecommunications and Information Technology; 2005, 3; 81-86
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
From Signals to Knowledge and from Knowledge to Action: Peircean Semiotics and the Grounding of Cognition
Autorzy:
Camargo, Eduardo
Gudwin, Ricardo
Powiązania:
https://bibliotekanauki.pl/articles/31234162.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Instytut Filozofii i Socjologii PAN
Tematy:
Peircean semiotics
knowledge representation
cognitive science
Opis:
Cognition is meant as the process of acquiring knowledge from the world. This process is supposed to happen within agents, which build such knowledge with the purpose to use it to determine their actions on the world. Following Peircean ideas, we postulate that such knowledge is encoded by means of signs. According to Peirce, signs are anything that can be used to represent anything else. Also, for Peirce, to represent means to be able to generate another sign, called the interpretant of the original sign, which still holds the same power of interpretability, I.e, its power to be transformed into a new sign, holding this same power. This happens through a processcalled semiosis, the process by which a sign is transformed into an interpretant. This whole process is performed with the aim of subsidizing the agent in deciding its behavior. So, even though the semiosis process has the power to continue infinitely, it usually stops whenever the generated interpretant brings enough information in order for the agent to effectively act in the world. We take signals to be the substract of signs. Signals are any physical property, which can be measured and captured by the agent, by means of its sensors. This includes any kind of internal memory the agent is able to have access, in order to operate. In this sense, signs can be both in the world (if these signals come from sensors) and within the own agent’s mind (if signals come from an internal memory). We understandan agent’s mind as the agents’ control system. In either case, signals can be abstracted as numbers. Not simply numbers, but numbers coming from specific sensors or specific memories. Using ideas from Peircean philosophy, in this work we postulate a pathway, in which signals, collected by either sensors or memory, can be organized in such a way that they can be effectively used as knowledge, in order for an agent to be able to decide its actions on the world, on the pursuit of its internal motivations. We postulate that agents identify and create a model of the world based on possibilities, existents, and laws, and based on this model, they are able to decide an action that maximizes the chance for the world to gain a shape, which the agents intend for it to be. This theory is postulated particularly for the case of artificial autonomous agents, meant to be constructed by engineering artifacts.
Źródło:
Filozofia i Nauka; 2022, 10, zeszyt specjalny; 101-136
2300-4711
2545-1936
Pojawia się w:
Filozofia i Nauka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic Programming System with Access in The Natural Language
Autorzy:
Kazimierczak, J.
Powiązania:
https://bibliotekanauki.pl/articles/92901.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
artificial intelligence
automatic programming
knowledge representation
Opis:
In this paper, acquisition of knowledge from user's programs written in Pascal to the knowledge base of the computer is introduced. It is shown that system with such a kind of knowledge can be used as the automatic programming system. First, representation of knowledge acquired by the computer from different programs is characterized. Then searching for pieces of knowledge in the knowledge base needed for synthesis of a program specified in user requirement is described. Finally, the construction of a new program from the found pieces of knowledge is shown.
Źródło:
Studia Informatica : systems and information technology; 2005, 2(6); 35-47
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Context search algorithm for lexical knowledge acquisition
Autorzy:
Szymański, J.
Duch, W.
Powiązania:
https://bibliotekanauki.pl/articles/206264.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
semantic memory
knowledge representation
international retrieval
knowledge acquisition
Opis:
A Context Search algorithm used for lexical knowledge acquisition is presented. Knowledge representation based on psycholinguistic theories of cognitive processes allows for implementation of a computational model of semantic memory in the form of semantic network. Knowledge acquisition using supervised dialog templates have been performed in a word game designed to guess the concept a human user is thinking about. The game that has been implemented on a web server, demonstrates elementary linguistic competencies based on lexical knowledge stored in semantic memory, enabling at the same time acquisition and validation of knowledge. Possible applications of the algorithm in domains of medical diagnosis and information retrieval are sketched.
Źródło:
Control and Cybernetics; 2012, 41, 1; 81-96
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contextual probability
Autorzy:
Wang, H.
Powiązania:
https://bibliotekanauki.pl/articles/307791.pdf
Data publikacji:
2003
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
mathematical foundations
knowledge representation
machine learning
uncertainty
data mining
Opis:
In this paper we present a new probability function G that generalizes the classical probability function. A mass function is an assignment of basic probability to some context (events, propositions). It represents the strength of support for some contexts in a domain. A context is a subset of the basic elements of interest in a domain - the frame of discernment. It is a medium to carry the "probabilistic" knowledge about a domain. The G function is defined in terms of a mass function under various contexts. G is shown to be a probability function satisfying the axioms of probability. Therefore G has all the properties attributed to a probability function. If the mass function is obtained from probability function by normalization, then G is shown to be a linear function of probability distribution and a linear function of probability. With this relationship we can estimate probability distribution from probabilistic knowledge carried in some contexts without any model assumption.
Źródło:
Journal of Telecommunications and Information Technology; 2003, 3; 92-97
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods of knowledge representation contained in COLREGS
Metody reprezentacji wiedzy zawartej w MPDM
Autorzy:
Breitsprecher, M.
Powiązania:
https://bibliotekanauki.pl/articles/359747.pdf
Data publikacji:
2012
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
system ekspertowy
baza wiedzy
reprezentacja wiedzy
expert system
knowledge base
knowledge representation
Opis:
The article presents the problem of knowledge representation contained in COLREGS for its use in navigation information systems. The idea of knowledge and representation of knowledge was discussed. A comparison of selected methods of knowledge representation was made and possibility of their use to represent the COLREGS rules was considered. By using selected COLREGS rule and presented methods of knowledge representation, functionality of the knowledge base was analyzed.
W artykule przedstawiono zagadnienie reprezentacji wiedzy zawartej w MPDM dla potrzeb jej wykorzystania w nawigacyjnych systemach informacyjnych. Omówiono pojęcie wiedzy oraz sposoby jej reprezentowania. Dokonano porównania wybranych metod reprezentacji wiedzy. Rozpatrzono możliwość ich zastosowania do reprezentacji prawideł MPDM. Na przykładzie wybranego prawidła przeanalizowano funkcjonalność bazy wiedzy utworzonej z użyciem przedstawionych metod reprezentacji wiedzy. Sformułowano wnioski.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 30 (102); 18-24
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Knowledge-Based Perspective for Software Process Modeling
Autorzy:
Kerzazi, N.
Lavallée, M.
Robillard, P. N.
Powiązania:
https://bibliotekanauki.pl/articles/384160.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Software Process Modeling
System Process Engineering Metamodel (SPEM)
Knowledge Representation
Opis:
As the acquisition and sharing of knowledge form the backbone of the software development process, it is important to identify knowledge discrepancies between the process elements. Explicit representation of the knowledge components within a software process model can provide a means to expose these discrepancies. This paper presents an extension of the Software and System Process Engineering Metamodel (SPEM), to be used as a new knowledge modeling layer. The approach, which is based on ontologies for knowledge representation, constitutes an explicit method for representing knowledge within process models. A concept matching indicator shows the state of the process model in terms of the concept gaps for each task within the process. This indicator could lead to more informed decision making and better management of the associated risks, in terms of team competency, documentation quality, and the training required to mitigate them.
Źródło:
e-Informatica Software Engineering Journal; 2013, 7, 1; 25-33
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling & understanding environment using semantic agents
Autorzy:
Dourlens, S.
Ramdane-Cherif, A.
Powiązania:
https://bibliotekanauki.pl/articles/91661.pdf
Data publikacji:
2011
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
semantic agent
knowledge representation language
generalized meta-model
behavioral aspects
Opis:
Understanding environment is a very complex task. Modeling and development of components of the environment in a symbolic way permit to simplify and clarify functional parts of components and interactions. In order to have a complete system specification, a rigorous behavior description is needed. Different levels of behavior abstraction are taking into account. The objective of our semantic modeling is to enhance architectural design and reduce complexity. It permits to agents to understand the environment, manage events and adapt the architecture. All the concepts of the environment like the component models and their behavior models are stored under event frames written in knowledge representation language. We present in this document, a generalized meta-model of behavioral aspects, that indexes the various environment behaviors in three ontologies. We have fully linked abstraction level with modeling and execution of scenarios. We show how software semantic agents can be modeled to build any interactive architecture.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2011, 1, 4; 301-314
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Features Reduction Using Logic Minimization Techniques
Autorzy:
Borowik, G.
Łuba, T.
Zydek, D.
Powiązania:
https://bibliotekanauki.pl/articles/227282.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
machine learning
knowledge representation
discernibility function
logic minimization
attribute reduction
complement
Opis:
This paper is dedicated to two seemingly different problems. The first one concerns information theory and the second one is connected to logic synthesis methods. The reason why these issues are considered together is the important task of the efficient representation of data in information systems and as well as in logic systems. An efficient algorithm to solve the task of attributes/arguments reduction is presented.
Źródło:
International Journal of Electronics and Telecommunications; 2012, 58, 1; 71-76
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Semantic Knowledge Management and Blockchain-based Privacy for Internet of Things Applications
Autorzy:
Lamri, Manal
Sabri, Lyazid
Powiązania:
https://bibliotekanauki.pl/articles/2142317.pdf
Data publikacji:
2022
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
hyperledger fabric
ontology
security of distributed system
spatio-temporal knowledge representation
Opis:
Design of distributed complex systems raises several important challenges, such as: confidentiality, data authentication and integrity, semantic contextual knowledge sharing, as well as common and intelligible understanding of the environment. Among the many challenges are semantic heterogeneity that occurs during dynamic knowledge extraction and authorization decisions which need to be taken when a resource is Accessem in an open, dynamic environment. Blockchain offers the tools to protect sensitive personal data and solve reliability issues by providing a secure communication architecture. However, setting-up blockchain-based applications comes with many challenges, including processing and fusing heterogeneous information from various sources. The ontology model explored in this paper relies on a unified knowledge representation method and thus is the backbone of a distributed system aiming to tackle semantic heterogeneity and to model decentralized management of Access control authorizations.We intertwine the blockchain technology with an ontological model to enhance knowledge management processes for distributed systems. Therefore, rather than reling on the mediation of a third party, the approach enhances autonomous decision-making. The proposed approach collects data generated by sensors into higher-level abstraction using n-ary hierarchical structures to describe entities and actions. Moreover, the proposed semantic architecture relies on hyperledger fabric to ensure the checking and authentication of knowledge integrity while preserving privacy.
Źródło:
Journal of Telecommunications and Information Technology; 2022, 3; 75--83
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rough Relation Properties
Autorzy:
Nicoletti, M. C.
Uchoa, J. Q.
Baptistini, M. T. Z.
Powiązania:
https://bibliotekanauki.pl/articles/908367.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
teoria mnogości
przedstawienie wiedzy
rough set theory
rough relation
knowledge representation
Opis:
Rough Set Theory (RST) is a mathematical formalism for representing uncertainty that can be considered an extension of the classical set theory. It has been used in many different research areas, including those related to inductive machine learning and reduction of knowledge in knowledge-based systems. One important concept related to RST is that of a rough relation. This paper rewrites some properties of rough relations found in the literature, proving their validity.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2001, 11, 3; 621-635
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Towards a Computational Ontology for the Philosophy of Wittgenstein: Representing Aspects of the Tractarian Philosophy of Mathematics
Autorzy:
Gomułka, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/30146669.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
Ludwig Wittgenstein
Semantic Web
Knowledge Representation
Tractatus Logico-Philosophicus
Philosophy of Mathematics
Opis:
The present paper concerns the Wittgenstein ontology project: an attempt to create a Semantic Web representation of Ludwig Wittgenstein’s philosophy. The project has been in development since 2006, and its current state enables users to search for information about Wittgenstein-related documents and the documents themselves. However, the developers have much more ambitious goals: they attempt to provide a philosophical subject matter knowledge base that would comprise the claims and concepts formulated by the philosopher. The current knowledge representation technology is not well-suited for this task, and a non-standard approach is required. The creators of the Wittgenstein ontology project are aware of this fact; recently, they have been discussing conceptual devices adjusting the technology to their needs. The main goal of this paper is to present examples of a representation of philosophical content that make use of both the devices already proposed and some new inventions. The represented content comes from the Tractatus Logico-Philosophicus; more specifically, its theses concerning the problems in philosophy of mathematics.
Źródło:
Analiza i Egzystencja; 2023, 63; 27-54
1734-9923
2300-7621
Pojawia się w:
Analiza i Egzystencja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Knowledge graphs effectiveness in Neural Machine Translation improvement
Autorzy:
Ahmadnia, Benyamin
Dorr, Bonnie J.
Kordjamshidi, Parisa
Powiązania:
https://bibliotekanauki.pl/articles/1839251.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
natural language processing
neural machine translation
knowledge graph representation
Opis:
Maintaining semantic relations between words during the translation process yields more accurate target-language output from Neural Machine Translation (NMT). Although difficult to achieve from training data alone, it is possible to leverage Knowledge Graphs (KGs) to retain source-language semantic relations in the corresponding target-language translation. The core idea is to use KG entity relations as embedding constraints to improve the mapping from source to target. This paper describes two embedding constraints, both of which employ Entity Linking (EL)—assigning a unique identity to entities—to associate words in training sentences with those in the KG: (1) a monolingual embedding constraint that supports an enhanced semantic representation of the source words through access to relations between entities in a KG; and (2) a bilingual embedding constraint that forces entity relations in the source-language to be carried over to the corresponding entities in the target-language translation. The method is evaluated for English-Spanish translation exploiting Freebase as a source of knowledge. Our experimental results demonstrate that exploiting KG information not only decreases the number of unknown words in the translation but also improves translation quality
Źródło:
Computer Science; 2020, 21 (3); 299-318
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Choice of a knowledge representation method for learning classifiers in medical domains
Autorzy:
Śnieżyński, B.
Powiązania:
https://bibliotekanauki.pl/articles/333765.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
metoda reprezentacji wiedzy
uczenie maszynowe
diagnostyka medyczna
knowledge representation methods
machine learning
medical diagnosis
Opis:
Knowledge based systems in medical domains are common nowadays. Machine learning techniques are broadly used to generate knowledge for such systems. Developers have to choose not only the learning method, but also, what is even more important, the knowledge representation method. The most common criterion for such a choice is prediction accuracy. In the paper we argue that in certain cases knowledge representation, and its simplicity and intelligibility, are more important. In this paper results of experiments performed using several medical data sets and chosen machine learning algorithms are presented. Next, some examples of learned classifiers are shown. Analysis of results conclude the work.
Źródło:
Journal of Medical Informatics & Technologies; 2005, 9; 195-200
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 28

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