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Упит dcterms_subject_txt: term extraction

178 items

  • 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
    ... 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 a source term and a parallel sentence pair ...
    ... and by extraction from the aligned bilingual corpus. Term entries from MD were parsed and only those that were confirmed by the mining corpus (monolingual or bilingual) were selected. As mentioned before, one term entry can comprise more terms (single or multi word) and confirmation for each term was looked ...
    ... 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 ...

  • 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

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation

  • Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology

    Mihailo Škorić, Mauro Dragoni (2019)
    This paper is a result of a task that was presented to attendants of Keyword Search in Big Linked Data summer school, that was organized by Vienna University of Technology, under the Keystone COST action in the summer of 2017. It presents a specific approach to the classification via creation of minimal document surrogates based on the US National medical library’s MeSH ontology, which is derived from the Medical Subject Headings thesaurus. In a series of previously classified medically ...
    document classification, MeSH, ontology, information extraction
    ... itself), are identified with a term that denotes a class, their parent object. This greatly facilitates and speeds up similarity calculations, as each class now has only one term. In this way, the document will always be classified by the Dice index into the class whose (only) term occurs most often in it, ...
    ... Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology Mihailo Škorić, Mauro Dragoni Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Medical Domain Document Classification via Extraction of Taxonomy Concepts from MeSH Ontology ...
    ... be found. However, having in mind the order of applying the replacements (from the longest to the shortest term), there will be no wrongful replacement and recognition of only a part of the term. 2.2 Conversion of documents into concept vectors This stage consists of two steps. First, in all documents ...

  • 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
    ... this pronunciation) and only those 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) ...
    ... guage Resources Association (ELRA). Stankovic, R., Krstev, C., Obradovic, I., Lazic, B., and Trtovac, A. (2016). Rule-based automatic multi-word term extraction and lemmatization. In Nicoletta Calzo- lari, et al., editors, Proceedings of the Tenth Interna- tional Conference on Language Resources and Evalua- ...
    ... extracted Serbian term (SRP_EXTRACTED) and from the English part of the aligned chunk (GIZA_ENG_LEMM) and its Dictio- nary entry (ENG_DICT). These features are: 1) total number of words in Serbian and English chunks, ex- tracted term and English Dictionary term (*_WC), 2) ex- tracted term frequency (*_FREQ) ...

  • 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

  • Classification of Terms on a Positive-Negative Feelings Polarity Scale Based on Emoticons

    Mihailo Škorić (2017)
    The goal of this paper is to draw attention to the possibility of using emoticon-riddled text on the web in language-neutral sentiment analysis. It introduces several innovations in the existing framework of research and tests their effectiveness. It also presents a software tool especially made for that purpose, explains how it builds a database with sentimental value of terms and offers the user manual. Finally, it presents a software tool that tests the new database and gives some examples ...
    data mining, information extraction, emotions, text on the web
    ... Scientific paper Figure 2. The appearance of user interface software for text mining. 3.2 The extraction of values from the document Determiners extraction is performed in two steps. The first part of the extraction consists of picking determiners that will be searched for and the values that they stand ...
    ... The intensity values of a determiner directly affects the intensity value which he transfer onto the term. Also, the closer the determiner is to the term, the more its value affects the value of the term. 70 Infotheca Vol. 17, No. 1, 2017 Scientific paper For the database formation to be successful ...
    ... research (Ptaszynski et. al., 2011). 1.2 Basic information about the experiment Goal of the experiment is to test a new approach to text extraction using emoticon extraction in a new way, by combination of the following three ideas: – Emoticons that will be used in the experiment will not be assigned dis- ...

  • 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
    ... 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 ...
    ... present and future dictionary production projects. Keywords: Serbian; good dictionary examples; automatization of dictionary-making; feature extraction; machine learning 1. Introduction 1.1 The aim of the paper This paper outlines an approach to providing support for building different kinds ...

  • 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.
    ... 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 ...
    ... 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 ...
    ... with the natural gender. 2. Description of Tasks and their Goals Work on acronyms in NLP domain focuses on some similar tasks. The first one is extraction of acronyms from corpora and detection of their variants. The second task is to detect acronym definitions and their variants in cor- pora and ...

  • 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 ...

  • 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

  • Отпад из процеса сагоревања угља као сировина за добијање елемената ретких земаља

    Бојан Земљак (2024)
    Због великог броја индустрија у којима се користе ови ресурси, глобална економија се у великој мери ослања на елементе ретких земаља. Елементи ретких земаља су есенцијална сировина — материјал за развој савремених технологија, али у односу на њихову огромну потражњу, њихово вађење је ограничено и повезано је са значајним утицајима на животну средину. Због њихове ограничене доступности, проблема који се јављају при процесима експлоатације, све више и више земаља почиње да тражи повољније могућности вађења елемената [REE] из секундарних ...
    Елементи ретких земаља, резерве, употреба, представници и методе опоравка елемената ретких земаља
    ... and Deng, Z.G., 2002. Extraction of rare carth metals by liquid surfactant membranes containing: Cyanex 272 as a carrier. Mining and Metallurgical Engineering(China), 22(3), p.74-78. [201] Raji, M., Abolghasemi, H., Safdari, J. and Kargari, A., 2018. Selective extraction of dysprosium from acidic ...
    ... Purification Technology, 320, p.124132. [204] Juang, R.S., Chen, J.D. and Huan, H.C., 2000. Dispersion-free membrane extraction: case studies of metal ion and organic acid extraction. Jowrma! of u Membrane Science, 165(1), p.59-73. [205] James, M., Cassidy, D., Goossens, D.J. and Withers, R.L., ...
    ... Lima, J.L. and Zagatto, E.A., 2009. Liquid-liquid extraction in flow analysis: A critical review. Analytica chimica acta, 652(1-2), p.54- 65. [219] Janssen, C.H., Macias-Ruvalcaba, N.A., Aguilar-Martinez, M. and Kobrak, M.N., 2015. Metal extraction to ionic liquids: the relationship between structure ...