Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "mathematical theory of evidence" wg kryterium: Wszystkie pola

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-7 z 7
    Tytuł:
    Vessels Route Planning Problem with Uncertain Data
    Autorzy:
    Neumann, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/115957.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    maritime-related data
    route planning
    dempster-shafer theory (DST)
    vessels route planning
    Dijkstra's algorithm
    decision rules
    mathematical theory of evidence
    uncertain data
    Opis:
    The purpose of this paper is to find a solution for route planning in a transport networks, where the costs of tracks, factor of safety and travel time are ambiguous. This approach is based on the Dempster-Shafer theory and well known Dijkstra's algorithm. In this approach important are the influencing factors of the mentioned coefficients using uncertain possibilities presented by probability intervals. Based on these intervals the quality intervals of each route can be determined. Applied decision rules can be described by the end user.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 3; 459-464
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Problem wykrycia i problem pokrycia
    Problem of detecting objects and of covering an area
    Autorzy:
    Filipowicz, W.
    Neumann, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/360375.pdf
    Data publikacji:
    2008
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    matematyczna teoria ewidencji
    fuzja danych nawigacyjnych
    mathematical evidence theory
    navigational data fusion
    Opis:
    Radar jest przykładem urządzenia nawigacyjnego, za pomocą którego możliwe jest monitorowanie obszarów wodnych. Charakteryzuje się on, jak każde urządzenie techniczne, pewnym ograniczonym poziomem funkcjonalności oraz niezawodności. Rozmieszczenie stacji obserwacyjnych w taki sposób, aby prawdopodobieństwo wykrycia dowolnego obiektu w dowolnym miejscu było większe od zadanej wartości progowej, jest zadaniem optymalizacyjnym. Sformułowanie oraz metoda rozwiązania powyższego zadania zostały przedstawione w prezentowanym artykule.
    The radar is an example of a navigational device which enables monitoring of the sea areas. As every technical device, it is characterized by a certain limited level of functionality and reliability. Arranging observation stations so that plausibility of detecting any object at any place is greater than the threshold value is an operational research task. Formulation of the problem and the methods for solving it are presented in the paper.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2008, 13 (85); 10-14
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the mathematical theory of evidence in navigation
    Autorzy:
    Filipowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/135523.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    nautical evidence
    uncertainty
    belief structures
    position fixing
    fix accuracy
    systematic errors evaluation
    Opis:
    In most problems encountered in navigation, imprecision and uncertainty dominate. Methods of their processing rely on rather obsolete formalisms based on probability and statistics. Available solutions exploit a limited amount of available data, and knowledge is necessary to interpret the achieved results. Profound a posteriori analysis is rather limited; thus, the informative context of solutions is rather poor. Including knowledge in a nautical data processing scheme is impossible. Remaining stuck with the traditional formal apparatus, based on probability theory, one cannot improve the informative context of obtained results. Traditional approaches toward solving problems require assumptions imposed by the probabilistic model that exclude possibility of modelling uncertainty. It should be noticed that the flexibility of exploited formalism decide the quality of upgrading models and, subsequently, on the universality of the final results. Therefore, extension of the available formalisms is a challenge to be met. Many publications devoted to the mathematical theory of evidence (MTE) and its adaptation for nautical science in order to support decision making in navigational processes have enabled one to submit and defend the following proposition. Many practical problems related to navigational ship conducting and to feature uncertainty can be solved with MTE; the informative context of the obtained results is richer when compared to those acquired by traditional methods. Additionally, a posteriori analysis is an inherent feature of the new foundations. The brief characteristics of a series of publications devoted to the new methodology are the main topics of this paper.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 159-167
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On Nautical Observation Errors Evaluation
    Autorzy:
    Filipowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/117354.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Nautical Observation
    Navigational Method
    mathematical theory of evidence (MTE)
    Errors Evaluation
    Observation Errors Evaluation
    Plausibility
    Systematic Errors Identificatio
    Navigational Evidence
    Opis:
    Mathematical Theory of Evidence (MTE) enables upgrading models and solving crucial problems in many disciplines. MTE delivers new unique opportunity once one engages possibilistic concept. Since fuzziness is widely perceived as something that enables encoding knowledge thus models build upon fuzzy platforms accepts ones skill within given field. At the same time evidence combining scheme is a mechanism enabling enrichment initial data informative context. Therefore it can be exploited in many cases where uncertainty and lack of precision prevail. In nautical applications, for example, it can be used in order to handle data feature systematic and random deflections. Theoretical background was discussed and computer application was successfully implemented in order to cope with erroneous and uncertain data. Output of the application resulted in making a fix and a posteriori evaluating its quality. It was also proven that it can be useful for calibrating measurement appliances. Unique feature of the combination scheme proven by the author in his previous paper, enables identifying measurement systematic deflection. Based on the theorem the paper aims at further exploration of practical aspects of the problem. It concentrates on reduction of hypothesis frame reduction and random along with systematic errors identifications.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2015, 9, 4; 545-550
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New Approach Towards Position Fixing
    Autorzy:
    Filipowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/320811.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    position fixing
    mathematical theory of evidence
    fuzzy reasoning
    Opis:
    Navigation aids indications, measured distances and bearings are random values governed by various distributions, normal characteristic is widely assumed. Navigation handbooks read that mean error of bearing taken with radar is within a given range, distance error is within certain percentage of an obtained value. It is also known that measurements taken to different landmarks can be subjectively evaluated therefore diversified. All the mentioned factors are to be taken into account once vessel position is being fixed. In order to include them into a calculation scheme one has to engage new ideas and use different approaches. Mathematical Theory of Evidence extended for fuzzy environment proved to be universal platform for wide variety of new solutions in navigation.
    Źródło:
    Annual of Navigation; 2010, 16; 41-53
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical theory of evidence in maritime traffic engineering
    Autorzy:
    Filipowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/248099.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    sea transport
    fuzziness
    evidential theory
    Dempster-Shafer fuzzy reasoning
    Opis:
    Nowadays operator at maritime traffic monitoring station is assumed to have access to a great amount of data. Information come from different sources and the data are generated by multiple of sensors. Multiple sources of data create challenge regarding data association. The challenge is met by data fusion. By means of fusion, different sources of information are combined to arrive at proper final decision. Ship's presence within a confined area defines a non-empty bounded closed interval. It can be denoted by the earliest and latest bounds of the closed time interval at a given possibility level. To assess situation within any confined region one should take into account total of safety factors of all ships present within forecast imprecise slots of time. Safety factors enable vessels' classification regarding potential consequences of an accident. In general approach environmentally dangerous freight and huge tonnage increase the factor. Safety factors are treated as fuzzy, imprecise values. Small ranges of values are assigned to small craft without dangerous cargo. The largest intervals are reserved for huge crude carriers. Associated data enable the VTS operator to approximate congestion for each restricted and considered as important areas. To forecast and assess situation within such areas all ships are to be identified and classified. The process usually involves uncertainty, ambiguity and partiality in available evidence. The new AIS technology itself causes ambiguity with respect to identification of crafts. Published statistics point at incorrect data transferred in the system. Therefore partial evidence is to be taken into account while identifying objects. Dempster-Shafer reasoning is helpful when combining evidence in order to refine objects. Situation in which one spotted new target and tries to find out what ship this could be is considered. Fuzzy evidence embraced within frame of discernment and related to this identification case will be assumed.
    Źródło:
    Journal of KONES; 2008, 15, 3; 129-137
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Application of Mathematical Theory of Evidence in Navigation
    Autorzy:
    Filipowicz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/116718.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    mathematical theory of evidence (MTE)
    MTE in Navigation
    marine navigation
    Dempster-Shafer theory
    Probability Assignment
    Fuzzy Values
    Uncertainty
    Belief Structures
    Opis:
    Plenty of various quality data are available to the officer of watch. The data of various qualities comes from different navigational aids. This kind of data creates new challenge regarding information association. The challenge is met by Mathematical Theory of Evidence. The theory delivers methods enabling combination of various sources of data. Results of association have informative context increased. Associated data enable the navigator to refine his position and his status regarding dangerous places. The procedure involves uncertainty, ambiguity and vague evidence. Imprecise and incomplete evidence can be combined using extended Dempster-Shafer reasoning scheme.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 4; 423-430
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies