Претрага
517 items
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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... of Kinetic Flotation Process for Two Experimental Cu(II) and Ni(II) – α-benzoinoxime Systems, Based on Kinetic Literature Models, Chemistry Magazine (Revista de Chimie), Vol. 60 (6), pp. 641-645 216. Osorio, D., Pérez-Correa, J.R., Cipriano, A., 1999. Assessment of expert fuzzy controllers for co ...
... flotation systems, except, in part, for the lower hierarchy levels. In the area of advanced control, model predictive methods can improve flotation process performances, but as a rule, in a short period of time. Finally, intelligent methods and expert systems have a good potential in flotation control ...
... development and validation of 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 ...Ivana M. Jovanović. "Model inteligentnog sistema adaptivnog upravljanja procesom prerade rude" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-01-13)
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E-Connecting Balkan Languages
In this paper we present a versatile language processing tool that can be successfully used for many Balkan languages. This tool relies for its work on several sophisticated textual and lexical resources that were developed for most of Balkan languages. These resources are based on several de facto standards in natural language processing.... ладия:1}. Figure 4 shows that these synsets are deep in the hypernymy/hyponymy hierarchy. In such situation expending query with hypernym synsets can be useful. Figure 4. Hypernym/hyponym wordnet hierarchy of the Bulgarian synset {лодка:1, ладия:1}. The corresponding Serbian synset belongs ...
... DELAF dictionary consists of app. 1,260,000 entries [7]. 2.3 Semantic Networks - Wordnet Semantic networks, seen as one important node in the hierarchy of ontologies, are used more and more in various phases of the automatic analysis of text. The tool WS4LR expects them to be in the form of wordnets ...
... were included as units of text logical layout. At the beginning of the alignment process all segments coincided with sentences automatically tagged by Unitex. The XAlign system [1] was used for the alignment process. Starting from the French version, the goal of the alignment was to establish ...Cvetana Krstev, Ranka Stanković, Duško Vitas, Svetla Koeva. "E-Connecting Balkan Languages" in Proceedings of the Workshop Workshop on Multilingual resources, technologies and evaluation for Central and Eastern European Languages, 17 September 2009, eds. C. Vertan, S. Piperidis, E. Paskaleva and Milena Slavcheva, Borovets, Bulgaria : Association for Computational Linguistics Stroudsburg, PA, USA (2009)
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Two approaches to compilation of bilingual multi-word terminology lists from lexical resources
In this paper, we present two approaches and the implemented system for bilingual terminology extraction that rely on an aligned bilingual domain corpus, a terminology extractor for a target language, and a tool for chunk alignment. The two approaches differ in the way terminology for the source language is obtained: the first relies on an existing domain terminology lexicon, while the second one uses a term extraction tool. For both approaches, four experiments were performed with two parameters being ...Branislava Šandrih, Cvetana Krstev, Ranka Stanković. "Two approaches to compilation of bilingual multi-word terminology lists from lexical resources" in Natural Language Engineering, Cambridge University Press (CUP) (2020). https://doi.org/10.1017/S1351324919000615
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Terminology Acquisition and Description Using Lexical Resources and Local Grammars
Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...... grammatical categories can be done only to some extent, so implicit knowledge from the existing dictionary of simple words is used to improve prediction. Figure 4: Relation between word endings and inflectional FST classes The process of automatic prediction of inflec- tional FST class for a new ...
... of lemmas FST class prediction can be divided into two parts: one is extraction of implicit knowledge and the other is actual prediction of FST class for a new lemma. Extraction of implicit knowledge in the form of a dataset with word endings, grammatical categories and FST classes proceeds as ...
... follows a hybrid approach: one part is rule-driven with explicit codification of knowledge about FST classes and the other is statistical, based on existing diction- ary of simple word lemmas with implicit knowledge about dependence between FST clas- ses and dictionary entries. After preparing ...Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić. "Terminology Acquisition and Description Using Lexical Resources and Local Grammars" in Proceedings of the 11th Conference on Terminology and Artificial Intelligence, Granada, Spain, 2015, Granada : LexiCon (Universidad de Granada) (2015)
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The mean value of the Riemann zeta-function on the critical line
Ivić Aleksandar (2014)Ivić Aleksandar. "The mean value of the Riemann zeta-function on the critical line" in Analytic Number Theory, Approximation Theory, and Special Functions, New York, USA:Springer (2014): 3-68. https://doi.org/10.1007/978-1-4939-0258-3\_1
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Assessment of landslide susceptibility using expert AHP method for the Ljubovija Municipality
Krušić Jelka, Marjanović Miloš, Andrejev Katarina, Abolmasov Biljana. "Assessment of landslide susceptibility using expert AHP method for the Ljubovija Municipality" in Abstract Book 17th Serbian Geological Congress, May 17‐20, Vrnjačka Banja 2, Beograd:Srpsko geološko društvo (2018): 625-629
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Comparison of expert, deterministic and Machine Learning approach for landslide susceptibility assessment in Ljubovija Municipality, Serbia
Krušić Jelka, Marjanović Miloš, Mileva Samarđić-Petrović, Abolmasov Biljana, Andrejev Katarina, Miladiović Aleksandar (2017)Krušić Jelka, Marjanović Miloš, Mileva Samarđić-Petrović, Abolmasov Biljana, Andrejev Katarina, Miladiović Aleksandar. "Comparison of expert, deterministic and Machine Learning approach for landslide susceptibility assessment in Ljubovija Municipality, Serbia" in Geofizika 34 no. 2, Zagreb:Geofizički Institut Andrija Mohorovičić (2017): 251-273. https://doi.org/10.15233/gfz.2017.34.15
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Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking
Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović. "Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking" in X International Scientific Congress Innovations 2024, Varna, Bulgaria, 24-27. jun 2024, Scientific Technical Union of Mechanical Engineering "Industry 4.0" (2024)
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Ocena preostalih radnih mogućnosti rotornog bagera metodom primenjene ekspertske ocene sa empirijskim faktorom korekcije - Remaining operational capabilities evaluation of bucket wheel excavator by application of expert assessment method with empirical co
Polovina Dragan, Ivković Slobodan, Ignjatović Dragan, Tanasijević Miloš. "Ocena preostalih radnih mogućnosti rotornog bagera metodom primenjene ekspertske ocene sa empirijskim faktorom korekcije - Remaining operational capabilities evaluation of bucket wheel excavator by application of expert assessment method with empirical co" in Integritet i vek konstrukcija - Structural Integrity and Life 10 no. 1, Beograd:Društvo za integritet i vek konstrukcija i Institut IMS - Society for Structural Integrity and Life & IMS Institute (2010): 31-41. https://doi.org/620.169.1:621.879.48
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Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking
U radu se prikazuju rezultati istraživanja vezanih za pripremu paralelnih korpusa, fokusirajući se na transformaciju u RDF grafove koristeći NLP Interchange Format (NIF) za lingvističku anotaciju. Pružamo pregled paralelnog korpusa koji je korišćen u ovom studijskom slučaju, kao i proces označavanja delova govora, lematizacije i prepoznavanja imenovanih entiteta (NER). Zatim opisujemo povezivanje imenovanih entiteta (NEL), konverziju podataka u RDF, i uključivanje NIF anotacija. Proizvedene NIF datoteke su evaluirane kroz istraživanje triplestore-a korišćenjem SPARQL upita. Na kraju, razmatra se povezivanje Linked ...paralelni korpusi, povezivanje imenovanih entiteta, prepoznavanje imenovanih entiteta, NER, NEL, povezani podaci, NIF, VikipodaciRanka Stanković, Milica Ikonić Nešić, Olja Perisic, Mihailo Škorić, Olivera Kitanović. "Towards Semantic Interoperability: Parallel Corpora as Linked Data Incorporating Named Entity Linking" in Proceedings of the 9th Workshop on Linked Data in Linguistics @ LREC-COLING 2024, Turin, 20-25 May 2024, ELRA and ICCL (2024)
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Business Models for Small-scale Biomass Projects Development
Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...... involvement of local people in organization and management of complete process of concept design and concept implementation is the common characteristic of all successful cases. However, the unique solution for involving of locals in the process does not exist. Considering the proposed solution for more intensive ...
... also stakeholders in cooperative fund. The drawback of this concept is that cooperatives, as a rule, do not have enough experience and necessary knowledge for implementing this type of projects, which include the development of a complex techno-economic analysis, provision of funds, procurement of equipment ...
... plant manager. The main advantage of this approach is that ESCO companies are specialized in this type of projects, they know the market, have the knowledge and experience in drafting feasibility studies, have access to funding sources and know the organization of supply chains. On the other hand, the ...Dejan Ivezić, Miodrag Gluščević, Marija Živković. "Business Models for Small-scale Biomass Projects Development" in 19th International Conference on Thermal Science and Engineering of Serbia, Niš : Faculty of Mechanical Engineering (2019)
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Preparation of Multimedia Document “YU Rock Scene”
SUMMARY: This study will present the preparation process of a multimedia document entitled YU ROCK SCENE in which participants were senior students of undergraduate studies of the Department of Library and Information Science at the University of Belgrade Faculty of Philology during the academic year 2014/2015, as a part of the subject Multimedia Documents. This study gives an overview of the historical development of rock and roll in the territory of the former Yugoslavia, rock scene in Yugoslav republics, ...... senior students studying Library and Information Science. We had the opportunity to unify and apply the knowledge gained during our four-year study programme, but we were also able to gain new knowledge. The topic of the project is very interesting and close to us. We have successfully cooperated with ...
... 1103.mp3 Table 1. Example of a part of the grupe table Figure 1. Example of a region page – Slovenia First the basic composition was made with hierarchy architecture in its core. Instead of making HTML pages for each and every region, city or band, four PHP- scripts that consult the SQL-database were ...
... Document “YU Rock Scene” UDC 004.55:378.147]:02(497.11) DOI 10.18485/infotheca.2016.16.1_2.6 ABSTRACT: This study presents the prepara- tion process of the multimedia document entitled “YU ROCK SCENE” in which participants were senior students of undergraduate studies of the De- partment of Library ...Milena Obradović, Aleksandra Arsenijević, Mihailo Škorić. "Preparation of Multimedia Document “YU Rock Scene”" in Infotheca - Journal for Digital Humanities, Faculty of Philology, University of Belgrade (2017). https://doi.org/10.18485/infotheca.2016.16.1_2.6
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A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian
Uvredljivi govor na društvenim medijima, uključujući psovke, pogrdni govor i govor mržnje, dostigao je nivo pandemije. Sistem koji bi bio u stanju da detektuje takve tekstove mogao bi da pomogne da internet i društveni mediji postanu bolji virtuelni prostor sa više poštovanja. Istraživanja i komercijalna primena u ovoj oblasti do sada su bili fokusirani uglavnom na engleski jezik. Ovaj rad predstavlja rad na izgradnji AbCoSER-a, prvog korpusa uvredljivog govora na srpskom jeziku. Korpus se sastoji od 6.436 ručno označenih ...... for Abusive Speech Detection in Serbian | Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih | 3rd Conference on Language, Data and Knowledge (LDK 2021) | 2021 | | 10.4230/OASIcs.LDK.2021.13 http://dr.rgf.bg.ac.rs/s/repo/item/0005133 Дигитални репозиторијум Рударско-геолошког факултета ...
... Ranka Stanković, Cvetana Krstev, and Branislava Šandrih; licensed under Creative Commons License CC-BY 4.0 3rd Conference on Language, Data and Knowledge (LDK 2021). Editors: Dagmar Gromann, Gilles Sérasset, Thierry Declerck, John P. McCrae, Jorge Gracia, Julia Bosque-Gil, Fernando Bobillo, and Barbara ...
... deciding which approach should we take when building the corpus of abusive language, several future implications were considered: 1) To the best of our knowledge, AbCoSER (Abusive Corpus for serbian) is the first corpus tackling abusive language phenomenon in the Serbian language; 2) This corpus is to be used ...Danka Jokić, Ranka Stanković, Cvetana Krstev, Branislava Šandrih. "A Twitter Corpus and Lexicon for Abusive Speech Detection in Serbian" in 3rd Conference on Language, Data and Knowledge (LDK 2021), MDPI AG (2021). https://doi.org/10.4230/OASIcs.LDK.2021.13
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Integrated energy planning approach for accelerating energy transition of households
The success of energy transition planning depends on several influential and variable factors that need to be considered and tracked in modeling to support policymakers. Expert-based energy models are mainly developed following the assumptions of experts and, in most cases, a limited number of stakeholders. This top-down modeling approach will provide satisfactory results in centrally managed energy sectors (electricity generation and distribution, district heating, etc.), where further decisions could be projected relatively precisely. However, the same approach will not ...Energetsko planiranje, Integrisano energetsko modeliranje, Energetska tranzicija, Domaćinstva, Individualno grejanje, LEAPBoban Pavlović, Marija Živković, Dejan Ivezić. "Integrated energy planning approach for accelerating energy transition of households" in Energy Reports, Elsevier BV (2023). https://doi.org/10.1016/j.egyr.2023.11.016
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Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema
Svetlana M. Štrbac-Savić (2016-06-10)Efikasnost predstavlja preduslov za opstanak svake rudarske kompanije, posebno u uslovima izuzetno konkurentnog trţišnog okruţenja kao što je to rudarska industrija. Efikasnost oznaĉava sposobnost kompanije da ispuni svoje kratkoroĉne ili dugoroĉne ciljeve. Operativna efikasnost se definiše kao odnos izmeĊu ulaznih parametara potrebnih za odvijanje proizvodnje i pokazatelja dobijenih proizvodnjom. U kontekstu rudarskog poslovanja, operativna efikasnost se odnosi na vreme potrebno da se mineralno dobro transformiše u novĉana sredstva. Visoka operativna efikasnost se postiţe kada se ostvari prava kombinacija karakteristika ...podzemni rudnik, operativna efikasnost, prognoza, teorija sivih sistema, stohastiĉke diferencijalne jednaĉine, simulacija... Niš, 2013. [MUSINGWINI08] C. Musingwini, C. and R.C.A. Minnitt, Ranking the efficiency of selected platinum mining methods using the analytic hierarchy process (AHP). Third International Platinum Conference ‗Platinum in Transformation‘, The Southern African Institute of Mining and Metallurgy ...
... future values of the operational efficiency we use expert‘s knowledge and simulation processes to find future values of input variables affecting them. Estimation of future revenues is based on the applicationofmean reversion process, normal and uniform distribution. Geometric Brownian motion ...
... Control Letters, 5, pp. 288-294, 1982. [DENG83] J. Deng, Grey fuzzy forecoast and control for grain, Journal of Huazhong University of Science and Technology, 2, pp. 1-8, 1983. [DENG85] J. Deng, Relatonal space of Grey Systems, Fuzzy Mathematic, (Special Issue of Grey Systems), 2, pp. 1-10, 1985 ...Svetlana M. Štrbac-Savić. "Prognoza operativne efikasnosti aktivnog podzemnog rudnika zasnovana na teoriji sivih sistema" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-06-10)
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Serbian NER&Beyond: The Archaic and the Modern Intertwinned
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 ...... targeted the categorization of Wikipe- dia entities using the Extended Named Entity (ENE) hierarchy in 30 languages (Serbian was not one of them). ENE included about 220 fine-grained categories of NEs in a hierarchy of up to four layers. Some traditional NE types such as location were specified as either ...
... and similar texts. It was manually evaluated on a sample of unseen newspaper texts. The overall F1 score of the model was ≈ 96%. To the best of our knowledge, so far there were no attempts to produce a NER system for Serbian literary texts. The enhanced version of SrpNER was la- ter utilized by Šandrih ...
... tool,9 while the second group used the INCEpTION.10 We wanted to receive user feedback on both platforms for the sake of creating the annotation process as com- fortable and efficient as possible in the future, but also to provide choice to annotators. The fundamental difference was the input format ...Branislava Šandrih Todorović, Cvetana Krstev, Ranka Stanković, Milica Ikonić Nešić. "Serbian NER&Beyond: The Archaic and the Modern Intertwinned" in Proceedings of the Conference Recent Advances in Natural Language Processing - Deep Learning for Natural Language Processing Methods and Applications, INCOMA Ltd. Shoumen, BULGARIA (2021). https://doi.org/10.26615/978-954-452-072-4_141
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Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji
Ljiljana R. Kolonja (2016-09-23)Postojeća organizacija zaštite na radu na površinskim kopovima uglja često nije umogućnosti da blagovremeno i tačno ukaže na nedostatke, koji mogu u bližoj ilidaljoj budućnosti da budu uzrok narušavanja bezbednosti radnika, ali i uzrokoštećenja materijalnih dobara rudnika. Nemogućnost donošenja pravovremenihodluka je moguće izbeći uvođenjem softverski podržanih sistema za praćenje ianalizu bezbednosti i zaštite na radu.Osnovni cilj ove doktorske disertacije je definisanje metodologije i razvoj modelasistema upravljanja zaštitom na radu, koji će omogućiti savremen, adekvatan isveobuhvatan način praćenja i analize ...... in the Process Industries, 8, 299‐305. MENZIES, T. 1999. Cost benefits of ontologies. intelligence, 10, 26‐32. MILLER, D. 2007. Measuring BI success: Business goals and business requirements. Information Management Online, 10000100‐1. MINGERS, J. 2008. Management knowledge and knowledge management: ...
... 1165‐1188. CHENG, H., LU, Y.‐C. & SHEU, C. 2009. An ontology‐based business intelligence application in a financial knowledge management system. Expert Systems with Applications, 36, 3614‐3622. CLARK, T. D., JONES, M. C. & ARMSTRONG, C. P. 2007. The dynamic structure of ...
... of knowledge and management of coded knowledge. The significance and benefits of such an approach are presented in the context of the business environment of the Electric Power Industry of Serbia. Apart from enhanced accessibility, information retrieval and knowledge management ...Ljiljana R. Kolonja. "Sistem poslovne inteligencije za upravljanje zaštitom na radu u rudarskoj industriji" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2016-09-23)
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Approach to operational mine planning: Case study Tamnava West
... expertise and detailed knowledge of the deposit characteristics, but also is the practical solution for developing, verification, analysis and updating of deposit model. Since Minex is not specially developed for continuous mining technology operational mine planning process is feasible, but not ...
... planning (as a part of coal homogenization process), is of critical importance for managing successful coal quality control and meeting criteria of power plant. This paper investigates advantage of proper operational planning on coal quality control process and overall production performance. For ...
... power plants fed with coal it is necessary to reduce the variation of the coal and that is done through coal homogenization process. More about homogenization process can be found in the work of many authors 3,4,5,6 Two places where coal homogenization can be conducted are at the mine site ...Dejan Stevanović, Mirjana Banković, Milica Pešić Georgiadis, Ranka Stanković. "Approach to operational mine planning: Case study Tamnava West" in Tehnika, Beograd : Savez inženjera i tehničara Srbije (2014). https://doi.org/10.5937/tehnika1406952S
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State and perspective of individual household heating in Serbia: A survey-based study
This paper presents the results of the household survey on individual household heating systems in Serbia. The survey was conducted in the period October to December 2020 with the participation of 1100 households with individual household heating systems. The information collected in the questionnaire can be separated into three main parts: basic household data, current heating system characteristics, and households’ perceptions and attitudes. The survey results provide unique and comprehensive information concerning individual household heating systems and the main ...Boban Pavlović, Dejan Ivezić, Marija Živković. "State and perspective of individual household heating in Serbia: A survey-based study" in Energy and Buildings, Elsevier BV (2021). https://doi.org/10.1016/j.enbuild.2021.111128
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Српски језик у дигиталном добу -- The Serbian Language in the Digital Age
Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević (2012)... human knowledge is stored and transmitted through the written word. Speech and text technologies process or produce these differ- ent forms of language, using dictionaries, rules of gram- mar, and semantics. is means that language technol- ogy (LT) links language to various forms of knowledge, independently ...
... multilingual technologies for all Euro- pean languages. ese technologies support automatic translation, content production, information process- ing and knowledge management for a wide variety of subject domains and applications. ey also enable in- tuitive language-based interfaces to technology rang- ...
... are oen ignored in knowledge-driven systems. e strengths and weaknesses of knowledge-driven and data-drivenmachine translation tend to be complemen- tary, so that nowadays researchers focus on hybrid ap- proaches that combine both methodologies. One such approach uses both knowledge-driven and data-driven ...Duško Vitas, Ljubomir Popović, Cvetana Krstev, Ivan Obradović, Gordana Pavlović-Lažetić, Mladen Stanojević. "Српски језик у дигиталном добу -- The Serbian Language in the Digital Age" in META-NET White Paper Series, G. Rehm, H. Uszkoreit (eds.), Springer (2012)