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Упит dcterms_subject_txt:information extraction

180 items

  • Using Query Expansion for Cross-Lingual Mathematical Terminology Extraction

    Velislava Stoykova, Ranka Stanković (2018)

  • Semi-Automatic Extraction of Multiword Terms from Domain-Specific Corpora

    Vesna Pajić, Staša Vujičić Stanković, Ranka Stanković, Miloš Pajić (2018)

  • A Data Driven Approach for Raw Material Terminology

    Olivera Kitanović, Ranka Stanković, Aleksandra Tomašević, Mihailo Škorić, Ivan Babić, Ljiljana Kolonja (2021)
    The research presented in this paper aims at creating a bilingual (sr-en), easily searchable, hypertext, born-digital, corpus-based terminological database of raw material terminology for dictionary production. The approach is based on linking dictionaries related to the raw material domain, both digitally born and printed, into a lexicon structure, aligning terminology from different dictionaries as much as possible. This paper presents the main features of this approach, data used for compilation of the terminological database, the procedure by which it has ...
    sirovine, rudarstvo, terminologija, rečnik, terminološka aplikacija, mobilna aplikacija, digitizacija, leksički podaci, korpusi, otvoreni povezani podaci
    ... textual data [7] is based on elimination of function words and meaningless words. This, widely accepted, approach for information retrieval is not so successful for knowledge extraction, lexicographic and ter- minological purposes, so we are relying on a combination of syntactic patterns [34,42,68] and ...
    ... systems have proved to yield the best solutions [71]. Besides monolingual term extraction, we also followed a different approach when it comes to bilingual term extraction [72,73]. We first perform monolingual extraction of domain-specific terms, using available terminology extractors, and then, given ...
    ... research [27,39,40] that proved successful for bilingual term extraction in other domains, where one language is Serbian. The Sketch-engine [9] has different types of extraction implemented, for various lan- guages, starting with keyword extraction, word sketches, usage examples, and thesaurus, but it is ...

  • An Experimental Investigation of the Environmental Risk of a Metallurgical Waste Deposit

    Jasmina Dedić , Jelena Djokic , Jovana Galjak, Gordana Milentijević, Dragan Lazarevic, Živče Šarkočević, Milena Lekić (2022)
    The aim of this study is to investigate the environmental risk of long-term metallurgical waste disposal. The investigated site was used for the open storage of lead and zinc waste materials originating from a lead smelter and refinery. Even after remediation was performed, the soil in the close vicinity of the metallurgical waste deposit was heavily loaded with heavy metals and arsenic. The pollutants were bound in various compounds in the form of sulfides, oxides, and chlorides, as well ...
    otpad od proizvodnje olova, remedijacija, rizik po životnu sreinu, BCR sekvencijalna ekstrakcija

  • Аутоматска екстракција дефиниција – допринос убрзању израде речника

    Рада Стијовић, Цветана Крстев, Ранка Станковић (2021)
    дескриптивни речници, метаанализа лексикографских дефиниција, аутоматска екстракција дефиниција, електронски речници, српски језик

  • Using English Baits to Catch Serbian Multi-Word Terminology

    Cvetana Krstev, Branislava Šandrih, Ranka Stanković (2018)
    In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...
    aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection
    ... the domain of Library and Information Science we have developed the English/Serbian textual resource containing 14,710 aligned sentences; • Already mentioned Dictionary of Library and Infor- mation Science (English/Serbian pairs); • The rule-based system for the extraction and lemmati- zation of potential ...
    ... logical list in the source language and the system for the extraction of terminology-specific nomi- nal phrases (MWT) in the target language it is possible to compile the bilingual aligned termi- nological list. 2. Related Work In recent years extraction of bilingual MWTs, and MWEs in general, from bilingual ...
    ... English/Serbian translation pairs where at least one term in a pair is an MWT. 4.3. The rule-based system for the terminology extraction The approach to terminology extraction for Serbian based on e-dictionaries and local grammars described in (Stankovic et al., 2016) was improved with additional syntactic ...

  • Flotability of chalcopyrite from the Rudnik deposit

    Đurica Nikšić, Predrag Lazić, Milena Kostović (2021)
    Директно селективно флотирање олова, бакра и цинка у флотацији рудника „Рудник” датира од 1984. године. Технолошка шема омогућава директно издвајање селективних концентрата у три циклуса. У првом циклусу се издваја минерал олова (галенит), док су минерал бакра (халкопирит) и минерал цинка (марматит) депримирани. У другом циклусу се оток концентрације минерала олова кондиционира и припрема за издвајање минерала бакра. Након кондиционирања, у овом циклусу се издваја минерал бакра. У трећем циклусу се оток концентрације минерала бакра кондиционира и припрема за ...
    Директно селективно флотирање, халкопирит, KAX, NaCN

  • Parallel Bidirectionally Pretrained Taggers as Feature Generators

    Ranka Stanković, Mihailo Škorić, Branislava Šandrih Todorović (2022)
    In a setting where multiple automatic annotation approaches coexist and advance separately but none completely solve a specific problem, the key might be in their combination and integration. This paper outlines a scalable architecture for Part-of-Speech tagging using multiple standalone annotation systems as feature generators for a stacked classifier. It also explores automatic resource expansion via dataset augmentation and bidirectional training in order to increase the number of taggers and to maximize the impact of the composite system, which ...
    анотација, обрада природног језика, издвајање обележја, композитне структуре, врста речи

  • Ontološki model upravljanja rizikom u rudarstvu

    Olivera Kitanović (2021)
    Rudarska proizvodnja obuhvata kompleksne tehnološke sisteme, što nameće potrebu za uspostavljanjem i unapređivanjem sistema upravljanja rizikom. Heterogenost i obim podataka neophodnih za upravljanje rizikom zahtevaju sistem koji ih na fleksibilan način integriše i omogućava njihovo optimalno korišćenje. Osnovni cilj ove disertacije je razvoj ontologije za domen rudarstva i na njoj zasnovanog modela za upravljanje rizikom. Njegova realizacija podrazumeva i implementaciju algoritama ekstrakcije informacija za popunjavanje ontologije, kao i odgovarajuće softversko rešenje. Razvoj modela obuhvata i značajno proširenje rudarskog korpusa, kao ...
    rudarstvo, rizik, upravljanje rizikom, procena rizika, ontologija, semantička mreža, ekstrakcija informacija, upravljanje znanjem, računarska lingvistika
    ... a descriptive method was used, finite automata and statistical analyzes for information extraction, and comparative and analytical research methods for evaluation and interpretation of the obtained results. Information technology tools were used for model development: UML for concept modeling, OWL ...
    ... is to develop an ontology for the mining domain and a risk management model based on it. Its realization includes the implementation of information extraction algorithms for improving the ontology, as well as an appropriate software solution. The development of the model includes a significant expansion ...
    ... specific domain ontology for risks in mining. Key words: mining, risk, risk management, risk assessment, ontology, semantic network, information extraction, knowledge management, computational linguistic Scientific field: Mining Engineering Scientific subfield: Computer science and systems ...

  • SASA Dictionary as the Gold Standard for Good Dictionary Examples for Serbian

    Ranka Stanković, Branislava Šandrih, Rada Stijović, Cvetana Krstev, Duško Vitas, Aleksandra Marković (2019)
    У овом раду представљамо модел за избор добрих примера за речник српског језика и развој иницијалних компоненти модела. Метода која се користи заснива се на детаљној анализи различитих лексичких и синтактичких карактеристика у корпусу састављених од примера из пет дигитализованих свезака речника САНУ. Почетни скуп функција био је инспирисан сличним приступом и за друге језике. Дистрибуција карактеристика примера из овог корпуса упоређује се са карактеристиком дистрибуције узорака реченица ексцерпираних из корпуса који садрже различите текстове. Анализа је показала да ...
    Српски, добри примери из речника, аутоматизација израде речника, издвајање својстава, Машинско учење
    ... 7 Extraction of GDEX features, http://gdex.jerteh.rs/. 258 Proceedings of eLex 2019 4. Feature analysis 4.1 The gold and the control dataset Each example extracted from the SASA dictionary for the gold dataset is supplied with a list of supporting information: volume, dictionary ...
    ... inspired by Kilgarriff et al. (2008) and Kosem (2017), and guided by recapitulation of features given in Kosem et al. (2019). 3.2 Feature extraction Feature extraction is enabled by the development of a web service inspired by the work described in Kilgarriff et al. (2008), Kosem (2017), and Kosem et ...
    ... e.g. its position in the example. They were classified as headword dependent and will be part of future analysis. 3.3 API for feature extraction The extraction of features is implemented as a web service7. This web service is also used for other tasks, such as text classification and corpus cleaning ...

  • A Lexical Approach to Acronyms and their Definitions

    Cvetana Krstev, Duško Vitas, Ranka Stanković (2015)
    In this paper we present a comprehensive approach to acronyms for Natural-Language Processing (NLP) of Serbian texts. The proposed procedure includes extraction of acronyms and their definitions that are usual Multi-Word Units (MWUs), shallow parsing of MWUs that enables MWU lemmatization and production of entries in morphological electronic dictionaries, both for MWU and acronyms, that are provided with grammatical, syntactic, semantic and domain information. This approach enables representation that reflects complex relations between acronyms and their definitions.
    ... tions, with a final goal to incorporate collected information into lexical resources for Serbian. In order to achieve these goals we have to deal with complex inflection of both Ser- bian MWUs and acronyms. We have followed these steps: 1. Extraction of pairs Acronym – Definition from a large corpus ...
    ... ferent corpora in order to obtain more acronym-definitions pairs and to supply missing information concerning gram- matical and inflectional properties of acronyms. Moreover, we intend to improve our extraction procedure in order to improve the recall and lemmatization procedure as to lem- matize ...
    ... traction and lemmatization graphs. The final results were obtained from all texts. Extraction graphs: They are used in Step 1. Since we were looking for acronym definitions locally, we used for the extraction two simple patterns: beg1 definition between1 acronym end1 beg2 acronym between2 definition ...

  • Prezentacija projekta "Zaštita ležišta mineralnih sirovina kao osnova sigurnog snabdevanja mineralnim sirovinama u Evropi (safemin4europe)

    Vladimir Simić, Rade Jelenković, Dragana Životić, Zoran Miladinović, Stefan Petrović, Marija Petrović (2022)
    Harmonični ekonomski razvoj svake zemlje u velikoj meri zavisi od dostupnosti sirovina, naročito mineralnih sirovina. Obezbeđivanje njihove dovoljne količine na tržištu (ponude) je od vitalnog značaja za funkcionisanje različitih industrijskih grana koje proizvode različitu robu i opremu neophodnu za ispunjavanje životnih potreba stanovništva kao i za efikasnu poljoprivredu. Mineralne sirovine su neophodne za podršku ekonomskim aktivnostima na lokalnom, regionalnom, nacionalnom i međunarodnom nivou. Ovo su, istorijski, prve sirovine koje su počele da se koriste iz domaćih izvora, i u ...
    ležišta mineralnih sirovina, valorizacija, zaštićena područja, socijalni aspekti

  • Actual contamination of the Danube and Sava rivers at Belgrade (2013)

    Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)
    rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening
    ... 632.8 nm with 2 mW of power. Non-target screening Extraction. Sequential liquid/liquid extraction was preformed on approximately 2000 mL aliquots of the water samples with two kinds of solvents – n-pentane and dichloromethane.22 Three extraction steps were performed in a separating funnel with 50 ...
    ... pesticides analyses Extraction. Water samples of 1 L in volume were divided into two replicates and extracted using Strata C18-E columns polymeric sorbent (200 mg, 6 mL). Prior to extraction, the cartridges were activated with 5 mL of methanol and 5 mL of distilled water. After extraction, the samples were ...
    ... biological half-life. Therefore, they are among the most fre- quently monitored micropollutants, and reliable techniques have been established for their extraction and quantification, since sediment contamination by heavy metals in rivers and estuaries has become an issue of increasing environmental concern ...

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost
    ... managed by “RockSix” so�ware (Vinci Technologies). For ten representative Mesozoic samples, the extraction of bitumen was also performed in order to test Rock-Eval parameters before and a�er extraction. �e usual dichloromethane/ methanol azeotrope (88:12) solvent was used for 32 hours (Schwarzbauer ...
    ... managed by “RockSix” software (Vinci Technologies). For ten representative Mesozoic samples, the extraction of bitumen was also performed in order to test Rock-Eval parameters before and after extraction. The usual dichloromethane/ methanol azeotrope (88:12) solvent was used for 32 hours (Schwarzbauer ...
    ... Jurassic and seven Cretaceous) from eight localities were also ana- lysed a�er the extraction of free hydrocarbons, in order to check the e�ect of bitumen. �e results revealed an increase in T max a�er extraction of up to 6 °C (∆T max; Tab. 2). Organic petrography and vitrinite reflectance �e ...

  • Geologic Information System of Serbia

    Branislav Blagojević, Branislav Trivić, Ranka Stanković, Nenad Banjac, Olivera Kitanović (2011)
    Geologic information system of Serbia (GeolISS) represents repository for digital archiving, query, retrieving, analysis and geologic data visualization. The GeolISS is implemented through ESRI ArcGIS technology, and is designed to operate as a personal geodatabase (MS Jet 4.0 Engine) and SDE enterprise geodatabase in MS SQL Server. The objective of GeolISS implementation is integration of existing geologic archives, data from published maps at different scales, newly acquired field data, as well as Web publishing of geologic information. Physical implementation ...
    Geologic information system, Conceptual model, Logical model, Implementation, Geodatabase
    ... GEOLOGIC INFORMATION SYSTEM OF SERBIA BRANISLAV BLAGOJEVIĆ1, BRANISLAV TRIVIĆ2, RANKA STANKOVIĆ3, OLIVERA KITANOVIĆ4 and NENAD BANJAC 5 Abstract Keywords: Geologic information system, Conceptual model, Logical model, Implementation, Geodatabase. Geologic information system of ...
    ... Измењено: 2023-10-14 03:26:08 Geologic Information System of Serbia Branislav Blagojević, Branislav Trivić, Ranka Stanković, Nenad Banjac, Olivera Kitanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Geologic Information System of Serbia | Branislav Blagojević ...
    ... of existing geologic archives, data from published maps at different scales, newly acquired field data, as well as Web publishing of geologic information. Physical implementation of GeolISS has been guided with conceptual and logical model in those specified the basic kinds of geologic entities ...

  • Improving efficiency of thermal power plants through mine coal quality planning and control

    Mirjana Banković, Dejan Stevanović, Milica Pešić, Aleksandra Tomašević, Ljiljana Kolonja (2018)
    Главни циљ контроле квалитета угља у рудницима лигнита је снабдевање термоелектрана угљем чији квалитет мора да се креће унутар одређених квалитативних ограничења. Карактеристике угља могу да утичу на ефикасност, поузданост и расположивост како котла тако и јединица за контролу емисије. У овом раду аутори су презентовали интегрисану симулацију рударског процеса као нови приступ у истраживању променљивости калоричне вредности угља приликом експлоатације комплексног лежишта лигнита. Резултати таквог приступа омогућавају драгоцен увид у перформансе континуалног рударског система у смислу контроле променљивости ...
    mine planning, variability of coal quality, simulation, coal blending

  • Conversion of land areas after coal mine closure and reclamation

    Radmila Gaćina, Bojan Dimitrijević, Sanja Bajić (2023)
    Otkopavanje uglja površinski i podzemno praćeno je degradacijom zemljišta, promenom formiranja predela i izmenom flore i faune. Od velikog značaja je razvoj novih naučno utemeljenih pristupa obnovljanje antropogeno poremećenih predela zasnovanih na formiranju rekultivacionih i rudarskih tehnologija. Apsolutno je neophodno obezbediti sveobuhvatno kvalitetno očuvanje zemljišnih i vodnih resursa i odrediti rekultivisano zemljište za novu namenu. U ovom članku je dat pregled najpopularnijih metoda rekultivacije zemljišta i mogućnosti rekultivacije zemljišta nakon završetka rekultivacije i zatvaranja rudnika uglja.
    rekultivacija, melioracija, revitalizacija, otkopavanje uglja, održivi razvoj
    ... Faculty of Mining and Geology, Belgrade, Serbia radmila.gacinarpf.bg.ac.rs; bojan.dimitrijevicorgf.bg.ac.rs; sanja.bajicorgf.bg.ac.rs Abstract: Coal extraction in the form ofopen and underground methods is accompanied by the degradation ofland, change in landscape formation and changing the flora and fauna ...
    ... 2006/21/EC has been adopted. Article 1(a) of Directive 75/442/EEC defined the safe operation of mining, cover the management of waste (the prospecting, extraction, transport, storage and treatment of mineral resources and the working of quarries). According to the Serbian Law on Mining, technical and biological ...
    ... the reintroduction of an ecosystem previously destroyed by mining contamination. When it comes to reallocating and rehabilitating land after coal extraction, solar plants on conversion sites provide a win-win solution for all participants. The energy efficiency and construction capabilities of solar ...

  • Numerical modelling of the roughly simultaneous emplacement of two distinct ophiolite belts

    Nikola Stanković, Vesna Cvetkov, Vladica Cvetković (2024)

  • Flyrock Induced by Blasting in Surface Mining

    Milanka Negovanović, Lazar Kričak, Snežana Ignjatović, Stefan Milanović, Jovan Marković, Nikola Simić, Rade Šarac (2022)
    Минирање представља и даље најефикаснији и најјефтинији начин експлоатације великих количина чврстих минералних сировина на површинским коповима. Енергија експлозије се користи за фрагментацију чврсте стенске масе до захтеване гранулације. Поред позитивних ефеката минирања, постоје и одређени нежељени ефекти сваког процеса минирања који се могу јавити, а то су: потреси тла, разлетање комада стене, ваздушни удари, отровни и загушљиви гасови и прашина. Разлетање комада стене је неконтролисано избацивање фрагмената одминиране стенске масе и представља један од главних извора материјалне ...
    разлетање, бушење, минирање, површинска експлоатација, безбедност, несрећа

  • Hybrid Model for Optimisation of Waste Dump Design and Site Selection in Open Pit Mining

    Aleksandar Doderovic, Svetozar-Milan Doderovic, Sasa Stepanovic, Mirjana Bankovic, Dejan Stevanovic (2023)
    Waste management is an unavoidable technological operation in the process of raw material extraction. The main characteristic of this technological operation is the handling of large quantities of waste material, which can amount to several hundred million cubic metres. At the same time, this operation must comply with all administrative and environmental standards. Therefore, optimising waste rock management (particularly haulage and dumping) has the potential to significantly improve the overall value of the project. This paper presents a hybrid ...
    projektovanje odlagališta i izbor lokacije, hibridni model, optimizacija, genetski algoritam