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    Wyświetlanie 1-9 z 9
    Tytuł:
    Geomatics in hydrogeology
    Autorzy:
    Michalak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059615.pdf
    Data publikacji:
    2003
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    geomatics
    geospatial information
    geological feature
    hydrogeological feature
    geological object
    hydrogeological object
    fuzzy feature
    fiat feature
    Opis:
    Design and construction of hydrogeological information systems is now a necessity. For proper functionality of these systems, it is necessary to create them in accordance with widely accepted international standards regarding geospatial information. Geomatics research tools allow for creation of basic models of hydrogeological data, consistent with these standards. The models can be based upon classification of types and subtypes of hydrogeological features, as well as upon basic and derived classes of hydrogeological objects. The basis for this classification can be differentiation between features and objects, as well as between fuzzy features (objects) and fiat features (objects), or the analysis of their spatial dimensionality.
    Źródło:
    Geological Quarterly; 2003, 47, 1; 69-76
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new heuristic possibilistic clustering algorithm for feature selection
    Autorzy:
    Kacprzyk, J.
    Owsinski, J. W.
    Viattchenin, D. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/384599.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    feature selection
    fuzzy correlation measure
    possibilistic clustering
    heuristic possibilistic clustering
    fuzzy cluster
    Opis:
    The paper deals with the problem of selection of the most informative features. A new effective and efficient heuristic possibilistic clustering algorithm for feature selection is proposed. First, a brief description of basic concepts of the heuristic approach to possibilistic clustering is provided. A technique of initial data preprocessing is described and a fuzzy correlation measure is considered. The new algorithm is described and then illustrated on the well-known Iris data set benchmark and the results obtained are compared with those by using the conventional, well-known and widely employed method of principal component analysis (PCA). Conclusions and suggestions for future research are given.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2014, 8, 2; 40-46
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Scheme for Template Security at Feature Fusion Level in Multimodal Biometric System
    Autorzy:
    Selwal, A.
    Gupta, S. K.
    Kumar, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/102518.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    feature template
    biometric data
    feature vectors
    multimodal biometrics
    fuzzy sets
    database
    feature fusion
    Opis:
    Biometrics is the science of human recognition by means of their biological, chemical or behavioural traits. These systems are used in many real life applications simply from biometric based attendance system to providing security at a very sophisticated level. A biometric system deals with raw data captured using a sensor and feature template extracted from raw image. One of the challenges being faced by designers of these systems is to secure template data extracted from the biometric modalities of the user and protect the raw images. In order to minimize spoof attacks on biometric systems by unauthorised users one of the solutions is to use multi-biometric systems. Multi-modal biometric system works by using fusion technique to merge feature templates generated from different modalities of the human. In this work, a novel scheme is proposed to secure template during feature fusion level. The scheme is based on union operation of fuzzy relations of templates of modalities during fusion process of multimodal biometric systems. This approach serves dual purpose of feature fusion as well as transformation of templates into a single secured non invertible template. The proposed technique is irreversible, diverse and experimentally tested on a bimodal biometric system comprising of fingerprint and hand geometry. The given scheme results into significant improvement in the performance of the system with lower equal error rate and improvement in genuine acceptance rate.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 31; 23-30
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An improved algorithm for feature extraction from a fingerprint fuzzy image
    Autorzy:
    Surmacz, K.
    Saeed, K.
    Rapta, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/174451.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    biometrics
    feature extraction
    fingerprints
    minutiae
    Gabor filter
    feature vector
    image processing
    Opis:
    Proper fingerprint feature extraction is crucial in fingerprint-matching algorithms. For good results, different pieces of information about a fingerprint image, such as ridge orientation and frequency, must be considered. It is often necessary to improve the quality of a fingerprint image in order for the feature extraction process to work correctly. In this paper we present a complete (fully implemented) improved algorithm for fingerprint feature extraction, based on numerous papers on this topic. The paper describes a fingerprint recognition system consisting of image preprocessing, filtration, feature extraction and matching for recognition. The image preprocessing includes normalization based on mean value and variation. The orientation field is extracted and Gabor filter is used to prepare the fingerprint image for further processing. For singular point detection, the Poincaré index with a partitioning method is used. The ridgeline thinning is presented and so is the minutia extraction by CN algorithm. The paper contains the comparison of obtained results to the other algorithms.
    Źródło:
    Optica Applicata; 2013, 43, 3; 515-527
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New developments in fuzzy clustering with emphasis on special types of tasks
    Autorzy:
    Viattchenin, D. A.
    Owsiński, J. W.
    Kacprzyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/206677.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    clustering
    fuzzy sets
    possibilistic clustering
    inference
    three-way clustering
    feature selection
    Opis:
    The paper is devoted to a survey of work done in fuzzy clustering, mainly during the first decade of the 21st century, and that with emphasis on various approachesto the problem, as well as various formulations of the very problem. That is why not only the classical formulations are treated, but several other problems, related to (the use of) clustering, like feature selection, inference systems, three-way clustering, and, on the other hand, such formulations of clustering as the possibilistic one or the one involving intuitionistic fuzzy sets. These are treated as the background for presentation of some specific ideas of the main author, concerning definite heuristic algorithms for effective solving of some of these problems.
    Źródło:
    Control and Cybernetics; 2018, 47, 2; 115-130
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Multistage Procedure of Mobile Vehicle Acoustic Identification for Single-Sensor Embedded Device
    Autorzy:
    Astapov, S.
    Riid, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/227146.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    vehicle identification
    acoustic signal analysis
    feature extraction
    classification
    fuzzy logic
    Opis:
    Mobile vehicle identification has a wide application field for both civilian and military uses. Vehicle identification may be achieved by incorporating single or multiple sensor solutions and through data fusion. This paper considers a single-sensor multistage hierarchical algorithm of acoustic signal analysis and pattern recognition for the identification of mobile vehicles in an open environment. The algorithm applies several standalone techniques to enable complex decision-making during event identification. Computationally inexpensive procedures are specifically chosen in order to provide real-time operation capability. The algorithm is tested on pre-recorded audio signals of civilian vehicles passing the measurement point and shows promising classification accuracy. Implementation on a specific embedded device is also presented and the capability of real-time operation on this device is demonstrated.
    Źródło:
    International Journal of Electronics and Telecommunications; 2013, 59, 2; 151-160
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Customer product review summarization over time for competitive intelligence
    Autorzy:
    Amarouche, Kamal
    Benbrahim, Houda
    Kassou, Ismail
    Powiązania:
    https://bibliotekanauki.pl/articles/950925.pdf
    Data publikacji:
    2018
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    feature extraction
    fuzzy logic
    competitive intelligence
    opinion mining
    opinion summarization
    sentiment analysis
    SentiWordNet
    ekstrakcja cech
    logika rozmyta
    wywiad konkurencyjny
    eksploracja opinii
    podsumowanie opinii
    analiza nastrojów
    Opis:
    Nowadays, Customer’s product reviews can be widely found on the Web, be it in personal blogs, forums, or ecommerce websites. They contain important products’ information and therefore became a new data source for competitive intelligence. On that account, these reviews need to be analyzed and summarized in order to help the leader of an entity (company, brand, etc.) to make appropriate decisions in an efective way. However, most previous review summarization studies focus on summarizing sentiment distribution toward different product features without taking into account that the real advantages and disadvantages of a product clarify over time. For this reason, in this work we aim to propose a new system for product opinion summarization which depends on the time when reviews are expressed and that covers the sentiments change about product features. The proposed system firstly, generates a summary based on product features in order to give more accurate and efficient information about different features. secondly, classify the product based on its features in its appropriate class (good, medium or bad product) using a fuzzy logic system. The experimental results demonstrate the effectiveness of the proposed system to generate the real image of a product and its features in reviews.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2018, 12, 4; 70-82
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie metod adaptacyjnych w ocenie stanu środowiska glebowego
    Applying the adaptive applications in assessment of the environment soil state
    Autorzy:
    Gruszczyński, S.
    Urbański, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/385358.pdf
    Data publikacji:
    2007
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    zarządzanie środowiskiem
    SIP
    algorytmy eksploracji danych
    systemy neuro-rozmyte
    FSM
    komitety klasyfikatorów
    environmental management
    data mining algorithms
    neuro-fuzzy systems
    Feature Space Mapping
    classifiers committees
    Opis:
    W artykule zaprezentowano wyniki uzyskane z prób zastosowania dwóch algorytmów eksploracji danych pochodzących z obserwacji stanu chemicznego gleb w otoczeniu źródeł niezorganizowanej emisji metali ciężkich. Klasyfikacje standardów koncentracji zanieczyszczeń gleb wykonane przy udziale sieci FSM (Feature Space Mapping) oraz komitetów klasyfikatorów (w tym przypadku były to: FSM+IncNet+drzewa decyzyjne i komitet sieci FSM złożony z egzemplarzy różniących się funkcją transferu) wykazały znaczącą przewagę pojedynczego klasyfikatora FSM. Dodatkowo posiada on możliwość wyekstrahowania z bazy danych reguł klasyfikacji, które później jako makroinstrukcje mogą stać się nieodzownym elementem cyfrowych map glebowych i aktywnie uczestniczyć w budowie systemu informacji o przestrzeni. W obydwu przypadkach głównym ograniczeniem, a tym samym efektywnością zastosowania algorytmów była szczupłość danych użytych w analizie. To zdecydowało o użyciu metody walidacji krzyżowej podczas tworzenia modelu klasyfikacyjnego i tym samym narzuciło ostrożne traktowanie nawet bardzo optymistycznych wyników uzyskanych takim modelem.
    The paper presents the results of application two data mining coming from the chemical soils state observations, within the unorganized heavy metals emission. Soil pollution concentration standards classification with the use FSM networks, and also classifications committees (in this case: FSM + IncNet + decision trees, and FSM networks Committee which consists of elements differing by transfer function) show a considerable predominance of single FSM classifier. Additionally it has the possibility to extract the classification rules from the data basis which might be in future applied as macroinstruction for preparing the soil digital maps, and actively participate in SIP construction. In both cases the main restriction and also the algorithm application effectivity was a very little amount of data used in the analyses. This brought to the decision of using the cross validation method, during creating the classification model, and thereby imposes to treat very carefully, even very optimistic results obtained by this model.
    Źródło:
    Geomatics and Environmental Engineering; 2007, 1, 1; 29-39
    1898-1135
    Pojawia się w:
    Geomatics and Environmental Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fabric Defect Detection Using a Hybrid and Complementary Fractal Feature Vector and FCM-based Novelty Detector
    Wykrywanie defektów tkanin za pomocą hybrydowego wektora funkcji fraktalnej i nowatorskiego detektora opartego na zbiorze rozmytym wartości średnich (FCM)
    Autorzy:
    Zhou, J.
    Wang, J.
    Bu, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/232397.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    defect detection
    box-counting dimension
    fuzzy c-means
    novelty detection
    wykrywanie defektów
    wektor hybrydowy
    zbiór rozmyty wartości średnich
    Opis:
    Automated detect detection in woven fabrics for quality control is still a challenging novelty detection problem. This work presents five novel fractal features based on the box-counting dimension to address the novelty detection of fabric defect. Making use of the formation of woven fabric, the fractal features are extracted in a one-dimension series obtained by projecting a fabric image along the warp and weft directions, where their complementarity in discriminating defects is taken into account. Furthermore a new novelty detector based on fuzzy c-means (FCM) is devised to deal with one-class classification of the features extracted. Finally, by jointly applying the features proposed and the FCM based novelty detector, we evaluate the method proposed for eight datasets with different defects and textures, where satisfying results are achieved with a low overall missing detection rate.
    Automatyczne wykrywanie defektów tkanin w celu kontroli ich jakości mimo wielu dotychczasowych badań nadal stanowi wyzwanie. Mając na celu opracowanie nowatorskiej metody wykrywaniem wad tkanin przedstawiono pięć cech fraktalnych. W celu klasyfikacji wyodrębnionych cech opracowano detektor wad tkanin oparty na zbiorze rozmytym wartości średnich (FCM). Poprzez wspólne zastosowanie proponowanych cech i opartego na FCM detektorze sprawdzono proponowaną metodę dla ośmiu zestawów danych z różnymi defektami i teksturami. Stwierdzono, że otrzymane wyniki są na satysfakcjonującym poziomie.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2017, 6 (126); 46-52
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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