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267 items

  • From DELA Based Dictionary to Leximirka Lexical Database

    Biljana Lazić, Mihailo Škorić (2020)
    In this paper, we will present an approach in transforming Serbian language Morphological dictionaries from a DELA text format to a lexical database dubbed Leximirka. Considering the benefits of storing data within a database when compared to storing them in textual documents, we will outline some of the functionality that the database has made possible. We will also show how hand-made rules that use category labels lexical entries are marked with can be used to link lexical entries. ...
    Morfološki rečnici, jezički resursi, Leksimirka
    ... dictionary. It consists of a word form, its lemma, word type designation, semantic mark- ers and a set of grammar categories. Here is an example of one line from a DELAF dictionary: bibliotekarom,bibliotekar.N+Hum+Prof:ms6v This entry starts with the inflective form “bibliotekarom” followed by the lemma ...
    ... Latin script. The presentation of the retrieved data is limited to the basic set of data expressed mainly in natural language. Registered users, in line with their privileges, can access different segments of the Lex- imirka application: – data categories (option Categories), – dictionaries (option ...

  • Wordnet Development Using a Multifunctional Tool

    Ivan Obradović, Ranka Stanković (2007)
    In this paper we present a multifunctional tool for manipulating heterogeneous language resources. The tool handles electronic dictionaries, wordnets and aligned texts, and provides for their synchronous use in various tasks. We focus here on the description of the possibilities this tool offers in the development of wordnets. Besides the wordnet module which enables parallel handling of two wordnets, other modules, such as the module for morphological dictionaries and the module for aligned texts, as well as available finite ...
    Wordnet development, language resource integration, HLT tools
    ... parameters and by the possibility of invoking command- line routines and using external Perl, Awk, and XSLT scripts. WS4LR functions and their usage are explained in a printed manual that accompanies the software, as well as in a concise on-line context sensitive help. In this section we will briefly ...

  • Mineralogical study of clays from Dobrodo, Serbia, for use in ceramics

    Maja Milošević, Predrag Dabić, Sabina Kovač, Lazar Kaluđerović, Mihovil Logar (2019)
    keramika, glina, Dobrodo, mineralogija, sirovina, Srbija

  • 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
    ... “inside - outside - beginning”) with conll extension (Sang, 2002). For this purpose, we used XML 7→ CoNLL converter available within NER&BEYOND on-line tool. An example of this format is given in Table 5. 4 Evaluation In order to evaluate three NER system for personal names in Serbian, we need to ...
    ... Evaluation of SRPNER, SPACY NER and STANFORD NER on two test sets, by each named entity type 6 Online Tool for NER Serbian NER team (2019) offers an on-line tool for different purposes related to Named Entity Recog- nition. First, it supports conversion among differ- ent formats common for representations ...

  • Results of Recent Monitoring Activities on Landslide Umka, Belgrade, Serbia—IPL 181

    Biljana Abolmasov, Uroš Đurić, Jovan Popović, Marko Pejić, Mileva Samardžić Petrović, Nenad Brodić (2021)
    Klizišta, Monitoring, GNSS, Geodetska osmatranja, UAV snimci, PSInSAR
    ... processing. Forward image overlap was at least 90% and overlap between flight path rows was around 60%. UAV was flying at height of 80 m above take-off station achieving average pixel size of 2.2 cm. Seven flights were performed in order to cover the entire landslide area (Fig. 3). “Zero” high resolution ...
    ... mm) close to local secondary scarps. Taking into account time span between two survey sequences (eight months), displacement vectors rates were in line with obtained GNSS2 object point monitoring results for the same period. UAV photogrammetric survey analysis from two series of imaging (2018 and ...
    ... Heading angle 350° 190° LOS 80° 280° Swath 250 km 250 km Spatial resolution 5 � 20 m 5 � 20 m Incident angle 39,2°–40,3° 39.1°–39,5° Track 175 153 Line 142 440–445 230 B. Abolmasov et al. Fig. 5 Results of geodetic benchmarks survey; displacement vectors analysis; “zero” measurements (March 2018) ...

  • Crystallography and Surface Oxidation of Stoichiometric Arsenopyrite from Šumadija-Kopaonik Pb-Zn/Polymetallic Ore District (Serbia)

    Ivana Jelić, Aleksandar Pačevski, Aleksandar Kremenović, Aleš Šoster, Andreja Šestan, Janez Zavašnik (2023)
    The behaviour and stability of arsenopyrite largely depend on its crystal structure, but studies of crystallography and structural defects are scarce. For clarification, we investigated a series of natural arsenopyrite crystals from the polymetallic Pb-Zn-(±Cu,Ag,Au,Sb,Bi,W) Šumadija-Kopaonik ore district (Serbia) by powder X-ray diffraction (XRPD). Among them, samples from the Drenjak gold mineralisation showed near-stoichiometric FeAsS composition and were further investigated by conventional and high-resolution transmission electron microscopy methods. TEM revealed abundant planar crystallographic defects and epitaxial surface oxide layer ...
    Inorganic Chemistry, Condensed Matter Physics,General Materials Science, General Chemical Engineering, crystal structure, FeAsS, oxidation, TEM, XRPD
    ... spectroscopy (EDS). The quantification was assessed by the Cliff-Lorimer ratio thin section method (four iterations), with the Si-K line as the ratio standard element and line [20]. The calculated composition, mean of 16 spot analyses, was determined as (wt%): Fe 34, As 47, S 19 (sum 100); (at%): Fe ...

  • Machine learning based landslide assessment of the Belgrade metropolitan area: Pixel resolution effects and a cross-scaling concept

    Uroš Đurić, Miloš Marjanović, Zoran Radić, Biljana Abolmasov (2019)
    Improvements of Machine Learning-based landslide prediction models can be made by optimizing scale, customizing training samples to provide sets with the best examples, feature selection, etc. Herein, a novel approach, named Cross-Scaling, is proposed that includes the mixing of training and testing set resolutions. Hypothetically, training on a coarser resolution dataset and testing the model on a finer resolution should help the algorithm to better generalize ambiguous examples of landslide classes and yield fewer over/underestimations in the model. This ...
    klizišta, podložnost, mašinsko učenje

  • Оцена перспективности изворишта "Вић баре" за водоснабдевање Обреновца

    Бојан Хајдин, Душан Поломчић, Зоран Стевановић, Драгољуб Бајић, Катарина Хајдин (2012)
    ... boundary, 6. intergranular porosity, 7. impermeable sediments, 8. wells, 9. piezometers, 10. drainage system, 11.water treatment WF “Zabrezje”, 12. profile line Osnovni vid prihranjivanja izdani predstavlja infiltracija reénih voda Sto pospeSuje i polozaj izvorista u meandru Save koja sa tri strane okruZuje ...

  • Terenska nastava iz geofizike: Arheološki lokaliteti na području Trstenika

    Dragana Đurić, Jelena Vukčević, Dejan Vučković, Ivana Vasiljević, Vesna Cvetkov (2020)
    geofizika, geofizička istraživanja u arheologiji, arheologija u okolini Trstenika
    ... Muzejske zbirke Trstenik, kao i stručnjacima Narodnog muzeja Kruše- vac, terenska nastava se poslednje četiri godine (2016 - 2019) sprovodila u oko- lini Trstenika, a za potrebe arheoloških istraživanja u sklopu kojih su predviđe- na i geofizička istraživanja. Na teritoriji opštine Trstenik postoje ...

  • Definisanje strukturnih odnosa primenom postupka horizontalni gradijent

    Snežana Ignjatović, Ivana Vasiljević, Natalija Jovanović (2019)
    Različiti postupci matematičkih transformacija se mogu primeniti na gravimetrijskim i magne tometrijskim podacima, kako bi se na istražnom terenu definisali strukturno-tektonski odnosi. U radu su prikazani rezultati dobijeni korišćenjem postupka horizontalni gradijent i ukupni horizontalni gradijent na gravimetrisjkim podacima. Navedeni postupci su pomogli da se detektuju kontakti sa velikim padnim uglom (vertikalni ili subvertikalni kontakti), koji se mogu interpretirati kao rasedi. Za test područije uzet je istražni prostor koji se nalazi na jugoistoku Srbije u okolini Vranjskog basena. Položaji ...
    gravimetrijski podaci, matematičke transformacije, rased, Vranjski basen
    ... gradijenta – rađena u pravcu jugoistok-sverozapad (kontakti su pri- kazani ljubičastim linijama) Na slici 4 kontakti su prikazani ljubičastim lini- jama i imaju pravac pružanja JI-SZ, S-J i I-Z, dok su na slici 5 kontakti prikazani braon linijama i imaju pravac pružanja SI-JZ, I-Z i S-J. ...

  • Digital Library From A Domain Of Criminalistics As A Foundation For A Forensic Text Analysis

    Dalibor Vorkapić, Aleksandra Tomašević, Miljana Mladenović, Ranka Stanković, Nikola Vulović (2017)
    U ovom radu predstavljen je model koji omogućava prikupljanje, pripremu, opis metapodataka, upravljanje i eksploataciju, uključujući pretragu punog teksta dokumenata iz domena kriminalistike napisanih na srpskom jeziku. Predloženi pristup primenjuje se na veb portalu koji sakuplja različite tekstove nastale iz časopisa Akademije za kriminalistiku i policijske studije, Krivičnog zakona Srbije, konferencija „Tara“ i „Reiss“, kao i iz nekih doktorskih disertacija vezanih za ovu oblast istraživanje. Nakon obrade teksta, korpus koji sadrži preko 5500 stranica običnog teksta, kreiran je i ...
    Omeka, Wordnet, pretraga punog teksta, morfološka i semantička pretraga teksta, proširenje upita
    ... text is created and prepared for publication as an online resource for full text search using Omeka, an open source content management system for on line digital library development. Search capabilities, both full text and metadata search are customized and improved by query expansion via web service ...

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • Improving Document Retrieval in Large Domain Specific Textual Databases Using Lexical Resources

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Olivera Kitanović (2017)
    Large collections of textual documents represent an example of big data that requires the solution of three basic problems: the representation of documents, the representation of information needs and the matching of the two representations. This paper outlines the introduction of document indexing as a possible solution to document representation. Documents within a large textual database developed for geological projects in the Republic of Serbia for many years were indexed using methods developed within digital humanities: bag-of-words and named ...
    ... (as a substring of the genitive form of lignit) and Tamnava as matches (underlined by a thicker single line) but would fail to identify uglja (genitive form of ugalj underlined by a double line), which is, however, identified by the improved system. As we have already mentioned, the initial system ...
    ... document from our collection in which recognized NEs are highlighted—toponyms are underlined, personal names (with roles) are underlined with a double line, organi- zation names are framed. Determination of weights for terms within the indexes of a document is a complex process and there are numerous models ...

  • 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
    ... empirijske modele može se vršiti on-line i off-line metodama, odnosno u realnom ili proširenom vremenu. Kod off-line metoda podaci mogu biti smenski ili dnevni, ili podaci koji se dobijaju posebnim uzorkovanjem prema definisanom eksperimentalnom programu. Kod on-line metoda, sakupljanje podataka obavlja ...
    ... obavlja se isključivo on-line instrumentacionom tehnikom, mada se analiza podataka može obavljati i off-line. Procesna oprema koja kontinualno obezbeđuje osnovne I. Jovanović, MODEL INTELIGENTNOG SISTEMA ADAPTIVNOG UPRAVLJANJA PROCESOM PRERADE RUDE UNIVERZITET U BEOGRADU, RUDARSKO-GEOLOŠKI FAKULTET ...
    ... tačnosti. Pri tom, autori ističu da se ova sposobnost prepoznavanja (klasifikacije) značajnih struktura pene može implementirati u on-line kontrolne sisteme ili off-line operativne procedure na različite načine. Na primer, izlazna veličina iz klasifikatora (tj. određena klasa pene) može se dalje uvrstiti ...

  • Machine Learning and Deep Neural Network-Based Lemmatization and Morphosyntactic Tagging for Serbian

    Ranka Stanković, Branislava Šandrih, Cvetana Krstev, Miloš Utvić, Mihailo Škorić (2020)
    The training of new tagger models for Serbian is primarily motivated by the enhancement of the existing tagset with the grammatical category of a gender. The harmonization of resources that were manually annotated within different projects over a long period of time was an important task, enabled by the development of tools that support partial automation. The supporting tools take into account different taggers and tagsets. This paper focuses on TreeTagger and spaCy taggers, and the annotation schema alignment ...
    Part-of-Speech tagging, lemmatization, corpus, evaluation, Serbian, morphological dictionary
    ... Command Line Interface (CLI).6 We used first the convert command, which enables conversion of input files in CoNLL-U format to spaCy’s json format. Sentences in CoNLL-U format7 are split into multiple to- ken lines, where the number of lines equals the number of tokens in a sentence. Each line contains ...

  • Претрага корпуса заснована на употреби екстерних лексичких ресурса путем веб-сервиса

    Милош Утвић, Ранка Станковић, Александра Томашевић, Михаило Шкорић, Биљана Лазић (2019)
    У раду се разматра хибридни приступ претрази корпуса, илустрован на примеру алатки OCWB и NoSketch Engine, примењених на специјални корпус из области рударства (РудКор) и Корпус савременог српског језика (СрпКор). Разматрани приступ комбинује постојеће могућности алатки OCWB и NoSketch Engine, које своју претрагу заснивају на лингвистичкој анотацији корпуса, са новим могућностима претраге у виду консултовања екстерних језичких ресурса (морфолошки електронски речници српског језика и лексичка база података Српски ворднет). Хибридни приступ је реализован надоградњом вебсучеља која поменуте алатке користе ...
    корпус, рударство, претраживање информација, проширивање упита, лексички ресурси, лексичке релације
    ... Proceedings of the Third International Conference Computational Linguistics in Bulgaria (CLIB 2018), May 27-29, 2018, Sofia, Bulgaria, ISSN 2367-5675 (on-line), 41–51, http://dcl.bas.bg/clib/wp-content/uploads/2018/06/CLIB_2018_Pro- ceedings_v1_final.pdf Рихли 2007: Pavel Rychlý, “Manatee/Bonito — A Modular ...
    ... s of the Third International Conference Compu- tational Linguistics in Bulgaria (CLIB 2018), May 27–29, 2018, Sofia, Bul- garia, ISSN 2367-5675 (on-line), 104–114, http://dcl.bas.bg/clib/wp-content/ uploads/2018/06/CLIB_2018_Proceedings_v1_final.pdf Томашевић и др. 2018: Aleksandra Tomašević, Ranka ...

  • BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations

    Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina (2023)
    Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...

  • An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia)

    N. Andrić-Tomašević, V. Simić, O. Mandic, D. Životić, M. Suárez, E. García-Romero (2020)
    Paleontology,Earth-Surface Processes,Ecology, Evolution, Behavior and Systematics,Oceanography

  • Advantages and challenges in presenting mathematical content using EDX platform

    Marija Radojičić, Ivan Obradović, Ranka Stanković, Olivera Kitanović, Roberto Linzalone (2016)
    ... “Preparation for entry exam”. Dividing content in sections, subsections, lessons and units provide a clear structure of course material, which is in line with the didactic principle of systematization and gradualism in the teaching process. Didactical principle of awareness within the teaching process ...

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization