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Упит dcterms_subject_txt:Fuzzy logic

82 items

  • Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude

    Ivana M. Jovanović (2016-01-13)
    U oblasti procesa prerade rude, flotacijska koncentracija predstavlja jednu od najznačajnijih i najčešće primenjivanih metoda separacije korisnih od nekorisnih minerala. Samim tim, veoma je važno osigurati uspešan rad flotacijskog postrojenja kroz dostizanje zadovoljavajućih tehno-ekonomskih pokazatelja. Cilj upravljanja procesom flotacijske koncentracije je upravo optimizacija kvaliteta i iskorišćenja korisne komponente u koncentratu uz maksimizaciju profita. Shodno tome, istraživanja na polju modelovanja i upravljanja ovim procesom zauzimaju značajno mesto u praksi kontolnog inženjenringa.Teorijska istraživanja u okviru doktorske disertacije obuhvatila su analizu položaja ...
    flotacijska koncentracija, modelovanje, upravljanje, inteligentni sistem, soft kompjuting, fazi logika, veštačke neuronske mreže
    ... ten different flotation process models based on the following soft computing methods: fuzzy logic (Mamdani and Takagi-Sugeno fuzzy inference system), artificial neural networks and hybrid adaptive neuro-fuzzy inference system. Copper content in the feed, pulp pH value and collector dosage in the ...
    ... through the application of artificial neural networks then by using of fuzzy logic or hybrid adaptive neuro-fuzzy inference system. Furthermore, comparison between characteristics of models based on Mamdani and Takagi-Sugeno fuzzy inference systems was performed. The Takagi-Sugeno system was proven ...
    ... using fuzzy logic inference. Fuzzy Sets and Systems 125, pp. 121–133 37. Casali, A., Gonzalez, G., Agusto H., Vallebuona, G., 2002. Dynamic simulator of a rougher flotation circuit for a copper sulphide ore, Minerals Engineering 15, pp. 253–262 38. Castillo, O., Melin, P., 2008. Type 2 Fuzzy Logic: ...

  • Application of the Fuzzy theory in the evaluation of operating parameters of auxiliary mechanization on open-cast coal mine, case study: pipelayers

    Stevan Djenadić, Miloš Tanasijević, Filip Miletić, Predrag Jovančić (2022)
    Achieved operating parameters are the main indicator of the work quality and selection of mining machines. The effectiveness of a coal mine is correlated with the availability of basic and auxiliary machines. The main task of auxiliary machines in lignite mines is to achieve optimal working conditions. From an economic point of view, auxiliary machines generate up to 20% of the lignite mines' total costs. These are the primary reasons for analyzing their current work and making decisions in ...
    upotrebni kvalitet, fazi teorija, rudarske mašine

  • Fuzzy stohastički model izbora sistema otvaranja podzemnog rudnika

    Saša M. Jovanović (2016)
    otkopavanje, otvaranje, mreže i grafovi, fuzzy skupovi, stohastički procesi, indeks konveksnosti, sistemi podrške odlučivannju

  • Развој модела употребног квалитета помоћне механизације на површинским коповима лигнита

    Драгица Јагодић Крунић (2021)
    Тренутно стање помоћне механизације на површинским коповима лигнита је незадовољавајуће узроковано пре свега старошћу и неблаговременом заменом машима услед чега је расположивост недовољна а трошкови експлоатације и одржавања високи. Тренутно стање и захтеви који се постављају пред ове машине указују на неопходност оптимизације процеса управљања помоћном механизацијом. Одређивање оптималног времена замене и преосталих могућности је најодговорнији управљачки задатак који треба да буде заснован на свеобухватном сагледавању економских, техничких и других узрочно последичних веза. Са економског аспекта гледано треба одржавати ...
    помоћна механизација, употребни квалитет, ефективност, расположивост, сигурност функционисања, ризик, трошкови животног циклуса, фази логика, Монте Карло метода
    ... comparative perspective. Procedia Engineering, 2014, 97, 1049–1059. [110] Zadeh, L., Fuzzy sets, Information and Control, 1965, Volume 8, pp. 338–353. [111] Zadeh, L. A. Fuzzy sets. U Fuzzy Sets, Fuzzy Logic, And Fuzzy Systems: Selected Papers by Lotfi A Zadeh, 1996 (str. 394–432). World Scientific ...
    ... Klir, G., Fuzzy sets and fuzzy logic, Prentice Hall P T R, Neew Jersey, USA, 1997. [116] Haans, M., Applied fuzzyArithmetic – an introduction with engineering applications, Springer, 2005. [117] Buckley, J.J., The multiple judge, multiple criteria ranking problem: A fuzzy set approach, Fuzzy sets and ...
    ... based on the fuzzy logic theory in terms of the analysis of the technical and economic indicators and their synthesis to the level of the quality of service. The fuzzy model of conclusion is structurally and hierarchically formed at three levels by applying the appropriate models of fuzzy composition ...

  • Development Of The Serbian Geological Resources Portal

    Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić (2011)
    ... implemented in ArcGIS 9.3.1 technology as a collection of .Net classes, as an extension of ArcGIS. It is now commonplace to see maps or other geo- logic information integrated seamlessly into websites. This is why a web component was added to GeolISS. This web component is constantly being developed ...

  • Увођење доменских и семантичких маркера за област рударства у српске електронске речнике

    Иван Обрадовић, Александра Томашевић, Ранка Станковић, Биљана Лазић (2017)
    ... Крстев и др., 2013: Cvetana Krstev, Ivan Obradović, Miloš Utvić, DuškoVitas, “A system for namedentity recognition based on local grammars”, In: J Logic Computation 24 (2), pp. 473–489. Крстев/Лазић, 2015: Цветана Крстев, Биљана Лазић, „Глаголи у кухињи и за столом”, Научни састанак слависта у Вукове ...

  • Indeksi kontrole održavanja i korišćenja rotornog bagera

    Jovana Mitrović, Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić (2023)
    Razvoj površinske eksploatacije se u velikom stepenu zasniva na svestranoj mehanizaciji rudarskih radova. Kako bi se zadovoljili potrebni kapaciteti, neophodna je primena savremene mehanizacije, velikih kapaciteta i pouzdanosti u radu. Naime, sa stepenom povećanja mehanizovanosti radova smanjuje se broj zaposlenih radnika, povećava produktivnost rada, smanjuju troškovi po jedinici proizvoda, a samim tim i povećava ekonomičnost površinske eksploatacije. Predmet istraživanja su rotorni bageri SRs 1200 koji predstavljaju samohodne mašine kontinuiranog dejstva namenjene za otkopavanje jalovine i korisne supstance na površinskim ...
    rudarstvo, rotorni bager, indeksi održavanja, indeksi korišćenja, TOPSIS

  • Development of Open Educational Resources (OER) for Natural Language Processing

    Cvetana Krstev, Biljana Lazić, Ranka Stanković, Giovanni Schiuma, Miladin Kotorčević (2015)
    In this paper we present the development of an online course at the edX BAEKTEL platform named “Lexical Recognition in the Natural Language Processing (NLP)”. It is based on the course of the same name for PhD studies at the University of Belgrade, Faculty of Philology. There are not many courses in Computational Linguistics (CL) on OER platforms, and there is none in Serbian either for CL or NLP. We have developed this course in order to improve this ...
    E-Learning, Open Educational Resources, Computational Linguistics, Lexical Resources, edX
    ... there are courses providing basic mathematical knowledge necessary in the field of natural language processing (especially statistics, algebra, and logic) as well as courses on lexical analysis and text mining. The most comprehensive education is offered to the students at the Department of Library ...

  • The Newton method for solving nonlinear equations based on aggregation operators

    Nebojša M. Ralević, Dejan Ćebić (2019)

  • Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining

    Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)
    reclamation, coal, sustainable development, multi-criteria decision making, VIKOR method

  • Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining

    Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)
    Analitički hijererhijski proces (AHP), dozeri, eksploatacija uglja, površinski kopovi
    ... [4], ELimination and Choice Expressing REality (ELECTRE) [5], Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) [6], Fuzzy logic (FUZZY) [7], Multiple-criteria Optimization and the Compromise Solution (VIKOR) [8]. In this paper, in order to define optimal evaluating methodology ...
    ... [4], ELimination and Choice Expressing REality (ELECTRE) [5], Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) [6], Fuzzy logic (FUZZY) [7], Multiple-criteria Optimization and the Compromise Solution (VIKOR) [8]. In this paper, in order to define optimal evaluating methodology ...
    ... Math. Comput. 2011, 218, 4295–4304. [CrossRef] 7. Gutiérrez, L.; Muñoz-Carpintero, D.; Valencia, F.; Sáez, D. A new method for identification of fuzzy models with controllability constraints. Appl. Soft Comput. 2018, 73, 254–262. [CrossRef] 8. Tavana, M.; Di Caprio, D.; Santos-Alteaga, F. An extended ...

  • Prioritization of strategic measures for strengthening the security of supply of the Serbian natural gas sector

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    To strengthen the security of supply of the Serbian gas sector, it is necessary to analyze the impact of planned strategic measures. The analysis involves the identification of the most influential threats to the security of natural gas supply and prioritization of the strategic measures for overcoming the consequences of threats. The proposed methodology is based on Fuzzy Analytic Hierarchy Process. The obtained weights for the identified threats and strategic measures are formed according to experts' judgments. The results ...
    Sigurnost snabdevanja, Donošenje odluka, Snabdevanje prirodnim gasom, Fazi AHP, Energetski indikatori

  • Indexing of textual databases based on lexical resources: A case study for Serbian

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2015)
    In this paper we describe an approach to improvement of information retrieval results for large textual databases by pre-indexing documents using bag-of-words and Named Entity Recognition. The approach was applied on a database of geological projects financed by the Republic of Serbia in the last half century. Each document within this database is described by metadata, consisting of several fields such as title, domain, keywords, abstract, geographical location and the like. A bag of words was produced from these ...
    ... Belgrade, Belgrade (2008) 7. Krstev, C., Obradović, I., Utvić, M., Vitas, D.: A System for Named Entity Recog- nition Based on Local Grammars. J Logic Computation 24(2), 473–489 (2014) 8. Manning, C.D., Raghavan, P., Schütze, H.: Introduction to Information Retrieval, vol. 1. Cambridge University ...

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... Jurafsky, D. (2000). Knowledge-free induction of morphology using latent semantic analysis. In Proc. of the 2nd workshop on Learning language in logic and the 4th conference on Computational natural language learning -Volume 7, Stroudsburg: Association for Computational Linguistics, pp. 67--72. ...

  • Environmental Energy Security Indicators as Tools for Environmental Protection

    Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević (2019)
    Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...
    енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост
    ... economic, environmental, etc. An analysis of Energy Security has been done with mathematical model which bases are the theory of the fuzzy logic and the fuzzy conclusion considering energy, economic, ecological and social indicators. If the goal of the model is to decide on a scenario assessment ...
    ... analysis DATA CLASSIFICATION FUZZIFICATION FUZZY ENGINE IDENTIFICATION ENVIRONMENTAL ACCEPTABILITY Input data Input Fuzzy set Output Fuzzy set Linguistic Variables Proposition of fuzzy set Integral analisis Fuzzy composition Questioners; Monitoring; Statistical ...
    ... model. In this way, ranking data is used as input to the fuzzy set, which is further analyzed in the fuzzy composition process. As a result of the fuzzy composition, an environmental energy security assessment is generated in a fuzzy form. 6 Data Collection GHG emission Indirect Pollutant ...

  • An Underground Mine Ore Pass System Optimization via Fuzzy 0–1 Linear Programming with Novel Torricelli–Simpson Ranking Function

    Dževdet Halilović, Miloš Gligorić, Zoran Gligorić, Dragan Pamučar (2023)
    rudna sipka, optimizacija, fazi linearno programiranje, trouglasti graf, Toričelijeva tačka, funkcija rangiranja

  • Serbian NER&Beyond: The Archaic and the Modern Intertwinned

    Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić (2021)
    U ovom radu predstavljamo srpski književni korpus koji se razvija pod okriljem COST Akcije „Distant Reading for European Literary History” CA16204. Koristeći ovaj korpus romana napisanih pre više od jednog veka, razvili smo i učinili javno dostupnim Sistem za prepoznavanje imenovanih entiteta (NER) obučen da prepozna 7 različitih tipova imenovanih entiteta, sa konvolucionom neuronskom mrežom (CNN), koja ima F1 rezultat od ≈91% na test skupu podataka. Ovaj model je dalje ocenjen na posebnom skupu podataka za evaluaciju. Završavamo poređenje ...
    ... pdf. Cvetana Krstev, Ivan Obradović, Miloš Utvić, and Duško Vitas. 2014. A System for Named Entity Recognition Based on Local Grammars. Journal of Logic and Computation, 24(2):473–489. Cvetana Krstev and Ranka Stanković. 2020. Old or New, we Repair, Adjust and Alter (Te- xts). Infotheca - Journal for ...

  • Development and Evaluation of Three Named Entity Recognition Systems for Serbian - The Case of Personal Names

    Branislava Šandrih, Cvetana Krstev, Ranka Stanković (2019)
    In this paper we present a rule- and lexicon-based system for the recognition of Named Entities (NE) in Serbian news paper texts that was used to prepare a gold standard annotated with personal names. It was further used to prepare training sets for four different levels of annota tion, which were further used to train two Named Entity Recognition (NER) sys tems: Stanford and spaCy. All obtained models, together with a rule- and lexicon based system were evaluated on ...
    NER, Named Entity Recognition Systems, Serbian, Personal Names
    ... Cvetana Krstev, Ivan Obradović, Miloš Utvić, and Duško Vitas. 2014. A System for Named En- tity Recognition Based on Local Grammars. Jour- nal of Logic and Computation 24(2):473–489. https://doi.org/10.1093/logcom/exs079. Cvetana Krstev, Miloš Utvić, and Jelena Jaćimović. 2015. Ako koza laže, rog ...

  • 2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem

    Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov (2019)
    2D inversion, geoelectrical method, Wenner array, ecology, Ada Huja
    ... exploration drilling is a high cost (drills, required staff etc.), and in this case (communal waste dump) the lack of utilization of geological logic in connecting the acquired data. The classification of geophysical (geoelectrical) methods is based on the number of dimensions shown, thus, we ...

  • Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications

    Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)
    This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...
    примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалима