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Human language technologies

 

Recent Submissions

  • Louw, Johannes A; Moodley, Avashlin (2016-12)
    In this paper we present a new cascading conditional random field based phrase break model for text-to-speech systems, trained on the speaker specific acoustic data that the text-to-speech voices are trained on. The training ...
  • Daykin, JW; Groult, R; Guesnet, G; Lecroq, T; Lefebvre, A; Léonard, L; Mouchard, L; Prieur-Gaston, E; Watson, Bruce (Prague Stringology Club, 2018-08)
    Online exact string matching consists in locating all the occurrences of a pattern in a text where only the pattern can be preprocessed. Classical online exact string matching algorithms scan the text from start to end ...
  • Berglund, Martin; Bester, W; van der Merwe, B (Springer Cham, 2018-10)
    Whereas Perl-compatible regular expression matchers typically exhibit some variation of leftmost-greedy semantics, those conforming to the posix standard are prescribed leftmost-longest semantics. However, the posix standard ...
  • Badenhorst, Jacob AC; Martinus, Laura; De Wet, Febe (2019-01)
    Since the release of the National Centre for Human Language Technology (NCHLT) Speech corpus, very few additional resources for automatic speech recognition (ASR) system development have been created for South Africa’s ...
  • Casini, G; Meyer, T; Varzinczak, I (2018-10)
    In this paper we present what we believe to be the first systematic approach for extending the framework for defeasible entailment first presented by Kraus, Lehmann, and Magidor—the so-called KLM approach. Drawing on the ...
  • Leenen, Louise; Meyer, T (IGI Global, 2018-01)
    The Governments, military forces and other organisations responsible for cybersecurity deal with vast amounts of data that has to be understood in order to lead to intelligent decision making. Due to the vast amounts of ...
  • Botha, L; Meyer, Thomas; Penaloza, R (2018-10)
    Description Logics (DLs) that support uncertainty are not as well studied as their crisp alternatives, thereby limiting their use in real world domains. The Bayesian DL BEL and its extensions have been introduced to deal ...
  • Ramunyisi, Ndivhuwo S; Badenhorst, Jacob AC; Moors, Carmen; Gumede, Tebogo (ACM, 2018-09)
    Speech-driven command and control is increasingly gaining momentum in the world around us. Using human speech to control appliances in trendy living spaces allows a user to control many appliances remotely. This paper ...
  • Britz, K; Varzinczak, I (Springer, 2018-06)
    Modal accounts of normality in non-monotonic reasoning traditionally have an underlying semantics based on a notion of preference amongst worlds. In this paper, we motivate and investigate an alternative semantics, based ...
  • Britz, K; Varzinczak, I (Taylor & Francis, 2018-03)
    We investigate an aspect of defeasibility that has somewhat been overlooked by the nonmonotonic reasoning community, namely that of defeasible modes of reasoning. These aim to formalise defeasibility of the traditional ...
  • Casini, G; Ferme, E; Meyer, T; Varzinczak, I (AAAI, 2018-10)
    Belief change and non-monotonic reasoning are usually viewed as two sides of the same coin, with results showing that one can formally be defined in terms of the other. In this paper we investigate the integration of the ...
  • Harmse, Henriette; Britz, Katarina; Gerber, Aurona J (IOS Press, 2018-09)
    The W3C standardized Semantic Web languages enable users to capture data without a schema in a manner which is intuitive to them. The challenge is that, for the data to be useful, it should be possible to query the data ...
  • Berndt, Joshua; Fischer, Bernd; Britz, Arina (HAL, 2018-10)
    Semi-structured data sets such as product reviews or event log data are simultaneously becoming more widely used and growing ever larger. This paper describes ConceptCloud, a flexible interactive browser for semi-structured ...
  • Abbott, JZ; Martinus, Laura JB (2018-12)
    Given that South African education is in crisis, strategies for improvement and sustainability of high-quality, up-to-date education must be explored. In the migration of education online, inclusion of machine translation ...
  • Wilken, Ilana; Taljard, E; De Wet, Febe (National Inquiry Services Centre Pty Ltd, 2018-11)
    Being a multilingual country rich in culture and diversity, South Africa has residents who use a variety of the 11 official languages for daily communication. Multilingual communication occurs especially in hospitals and ...
  • Moors, Carmen; Wilken, Ilana; Calteaux, Karen V; Gumede, Tebogo (ACM, 2018-09)
    Almost a decade has passed since the first audit on the state of HLT in South Africa was published in 2009. An increase in HLT R&D in South Africa since then, as well as developments in language resource management in the ...
  • Wilken, Ilana; Gumede, Tebogo; Moors, Carmen; Calteaux, Karen V (2018-12)
    Technology audits can play a significant role in surfacing information which can be used by researchers, policymakers and funders alike to build a country’s research and development system of innovation towards increasing ...
  • Pretorius, L; Marais, Laurette; Berg, A (Springer, 2017-03)
    The Grammatical Framework (GF) not only offers state of the art grammar-based machine translation support between an increasing number of languages through its so-called Resource Grammar Library, but is also fast becoming ...
  • Marais, Laurette; Van Zijl, Lynette (Springer, 2017-07)
    Unary self-verifying symmetric difference automata were introduced in [1], with an upper bound of O(2(supn) ) and lower bound of 2(sup n-1) -1 for state complexity. Implicit in the interpretation of self-verifying acceptance ...
  • Marais, L (2015-10)
    Mobile technology and mobile development platforms provide a rich ecosystem within which language and speech related technologies can be developed. Specifically, text-to-speech (TTS) technology provides the opportunity for ...

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