Knowledge in Information Processing
Ladislav BUŘITA
Abstract
The article draws on information sources and experience gathered by the researchers of the ACR defence research project “ACR Network Enabled Capability (NEC) Knowledge Management – MENTAL”. Ontologies are in focus from the information science point of view; the purpose here is their utilization in knowledge and information processing in the context of Information Systems and text document bases. The term “knowledge” is explained here as information in context. The final solutions are denominated as “Ontology Driven Applications”. Ontology is based on constructs: concept, instance and relationship. The designation of these basic ontology constructs differs depending on the chosen ontological environment. In the process of ontology creation it is necessary to take into account the details of the given environment. The MENTAL Project is conducted on the TM basis. The creation of ontology presents a conceptual reality modelling. The methodology of ontology creation stems from the clarification of basic elements of an application area; it lies predominantly in analysing important source documents. After that an ontology scheme in a selected design tool is proposed and then edited. Regarding free accessible editors, Protégé can be recommended for the first group and Ontopoly for the second one. A far as the application area of ontologies in information processing is concerned the Knowledge Portal for information processing is described; an example of Information Systems (IS) integration and an approach to analyzing intelligence information are introduced. The project of the technological solution of which is produced by Tovek and Aion companies. The example of IS integration introduces the solution from the environment of the battle C4I system (Land, Air and Navy). The intelligence data are analyzed from available reports and ontology constitutes the knowledge base for inferring potential threats.
Keywords
Knowledge management, ontology, Topic Maps, semantic application
Full paper 2009-12-23
Knowledge Acquisition in Tactical Command and Control Systems
Petr HRUZA, Jaroslav SMETANA
Abstract
Ontology is the philosophical study of the nature of being, existence or reality in general, as well as of the basic categories of being and their relations. Traditionally listed as a part of the major branch of philosophy known as metaphysics, ontology deals with questions concerning what entities exist or can be said to exist, and how such entities can be grouped, related within a hierarchy, and subdivided according to their similarities and differences.
The principal questions of ontology are “What can be said to exist?” and “Into what categories, if any, can we sort existing things?” Various philosophers have provided different answers to this question.
One common approach is to divide the extant entities into groups called categories. Of course, such lists of categories differ widely from one another, and it is through the
co-ordination of different categorial schemes that ontology relates to such fields as theology, library science and artificial intelligence.
The paper describes objectives and possible solutions of the project dealing with the ontology of GF-TCCS (Ground Forces Tactical Command and Control System) and AF-TCCS (Air Forces Tactical Command and Control System).
Keywords
Ontology, NEC, Topic maps Tactical Command and Control Systems, Ground Forces Tactical Command and Control System, Air Forces Tactical Command and Control System
Full paper 2009-12-23
Command and Control Systems and Data Processing
Jan HODICKY, Petr FRANTIS
Abstract
The current state of the art in data representation in command and control (C2) system is set by the US Force XXI Battle Command Brigade and Below (FBCB2) system and its a new presentation layer component Command and Control in 3 dimensions that renders the battlefield information into 3 dimensions (3D) environment in the real time. But this solution doesn’t use a tactical data representation in 3D. Tactical data representation in Czech C2- Ground Forces Tactical Command and Control System (GFTCCS) is based on ontology that was designed to interpret knowledge of this domain for human being. Topic maps method was chosen to describe information of the Czech C2 domain. Tactical symbols are visualized as a block or a spatial object that is semi transparent. They have also the APP – 6a bitmaps on the surfaces and other important information about current status of a unit. Additional information (combat efficiency, velocity, fuel, etc.) are visualized as bar graphs.
Keywords
Ontology, command and control, decision making process, taxonomy
Full paper 2009-12-23
Basic Structure of Topic Maps, NEC and Taxonomies
Kamil HALOUZKA, Josef KADERKA
Abstract
This article presents the topic maps as a standard for the representation and interchange of knowledge, with an emphasis on the findability of information and possibility of using topic maps in the Network enabled capability (NEC). A topic map at this article represents information using topics (representing any concept), associations (represent relationships between topics) and occurrences (represent the sources of information relating to the topic or a link to the topic). Furthermore, the article focuses at ontology as a proper illustration of a set of concepts within a domain and the relationships between those concepts. Next, other methods of knowledge engineering options to facilitate solutions of the computer networks security problems with focus on Denial of Services Attacks and Distributed Denial of Services Attacks respectively are depicted. A significant part of business activities and operations of a military character is realized through computer networks. One of the first steps to face is a taxonomy creating, which example is mentioned in this paper.
Keywords
Topic map, NEC, ontology, security, taxonomy, DoS, DDoS
Full paper 2009-12-23
Polynomial approach to control system design for a magnetic levitation system
F. Gazdos, P. Dostal, R. Pelikan
Abstract
The contribution deals with the problem of designing a control system for a magnetic levitation apparatus. The proposed procedure uses a polynomial approach for control system design with control structure having two feedback controllers. In the paper, necessary conditions for control system stability, reference tracking and load disturbance attenuation are derived together with a methodology for optimal setting of the controllers’ parameters. Although the system is unstable and nonlinear in nature, it is shown that it is not problematic to control it by means of linear controllers with parameters set in a robust way.
Keywords
Algebraic approaches, Polynomial methods, Model-based control, Magnetic levitation system, CE 152, Robust control
Full paper 2009-12-23
Using Fuzzy Model as a Solution of the Damage Target Identification System
Pavel VASICEK
Abstract
This article discusses the possibilities of extent damage target identification as a new system that can be used in modern battles in the most places in the world or against the terrorism in advantage. The first of all possible solutions this problem is using fuzzy logic model as a one part of artificial intelligence.
Keywords
Identification, extent damage target, fuzzy logic system.
Full paper 2009-12-22
The 2-Class And 3-Class Classifier Of FSK And PSK Signals Based On Karhunen-Loeve Transform
Marie Richterova, David Juracek, Antonin Mazalek
Abstract
This paper describes the using of Karhunen–Loeve transform (KLT) for the modulation recognition in HF and VHF bands. The input signal is pre-prossed and converted to the “phase image”. The method of clustering analysis was chosen by theoretic recommendations for 2–class recognizer and 3–class recognizer of FSK and PSK signals. KLT is provided on this image and itself performs the recognition by a minimum–distance classifier. The algorithm for a modulation recognition was realized in the programme Matlab. The tests designed algorithm was the implementation on real pattern signals.
Keywords
Karhune-Loeve transform, orthogonal transform, modulation recognition, modulation classifiers, digital modulation, signal processing, Matlab.
Full paper 2009-11-26
An object-oriented paradigm in the C programming language
Igor Košťál, Tibor Kmeť
Abstract
Algorithms are an essential part of a programming process. Nowadays, different
programming paradigms and different programming languages for implementing algorithms in some computing problem-solving programs can be exploited by programmers or students of programming. This paper deals with using an object-oriented paradigm in the C procedural imperative language. The paper shows such uncommon use of an object-oriented paradigm in the C language in a program solving a particular programming task. Furthermore, it deals with advantages and disadvantages of object-oriented programming in the C language and it compares the use of an object-oriented paradigm in the C non-object-oriented language and in the C++ object-oriented language by comparison of solutions of the same task by this paradigm in both of these languages. Also it compares the use of an object-oriented paradigm and a procedural paradigm in the C language by comparison of two different solutions of the same task. An object-oriented paradigm is used in one solution and a procedural paradigm is used in the second solution. On the basis of the analysis and comparison of all of these solutions the article presents advantages and disadvantages of object-oriented programming in the C language.
Keywords
Programming paradigms, Programming and programming languages.
Full paper 2009-08-11
The Simulation of an optic Tracking Seeker Function of Homing Missiles in Atmosphere
Radek Doskočil
Abstract
Possible way of implementation of measured and computed data about atmosphere turbulence into the simulation model of an optoelectronic seeker (coordinator) of a homing missiles is described in this article. The general method allows analyzing of impact of the atmosphere turbulence on output signal of an optoelectronic tracking coordinator of homing missiles.
Keywords
Turbulence, Atmosphere, Range, Seeker, Coordinator, Homing, Rocket, Simulation.
Full paper 2008-12-31
The effect of disturbance in the identification of technological systems
Miroslav Olehla
Abstract
The main characteristic of experimental identification is in using data obtained in a process by observation, respectively experimentation. The model of a process is therefore defined by an input and an output data file of the process. This paper focuses on the identification of linear systems (SISO). The impulse and step responses are determined and also the coefficients of the difference equations with a general input signal. These methods uses a generated general input signal or from the measurement of technological quantities. This paper mainly shows the effect of disturbance on input, output and measured input with the help of correlation functions.
Keywords
Identification, effect of disturbance, correlation function, transfer function, measured input, output. 2008-12-31