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Browsing Human language technologies by Title

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  • Grover, AS; Van Huyssteen, GB; Pretorius, MW (IEEE, 2011-07)
    South Africa (SA) epitomises diversity, with the nation boasting eleven official languages. The field of human language technology (HLT) can play a vital role in bridging the digital divide and thus has been recognised as ...
  • Naidoo, Soogandhree; Barnard, E (ALASA 2005, 2005-07)
    Telephone-based information services hold tremendous potential as a means of information access in the developing world. However,surprisingly little research has been done on the design of such systems - whether basic ...
  • Schlunz, Georg I; Dlamini, Nkosikhona; Tshoane, Alfred; Ramunyisi, Ndivhuwo S (IEEE, 2017-11)
    Text normalisation in text-to-speech synthesis comprises the segmentation and classification of the incoming text and the subsequent expansion of non-standard words into their standard word, spoken forms. We present a ...
  • Botha, G; Zimu, V; Barnard, E (2006-11)
    The authors investigate the performance of text-based language identification systems on the 11 official languages of South Africa, when n-gram statistics are used as features for classification. In particular, the authors ...
  • De Wet, Febe; Marais, L; Klop, D (ISCA Archive, 2015-09)
    The purpose of this study was to measure the efficacy of an eBook to improve the vocabulary and word recognition skills in an Afrikaans speaking group of lower socio-economic status of 6- to 7-year old children with poor ...
  • 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 ...
  • 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 ...
  • Van Niekerk, D; Barnard, E (2012-05)
    The authors investigate the acoustic realisation of tone in short continuous utterances in Yoruba. Fundamental frequency contours are extracted for automatically aligned syllables from a speech corpus of 33 speakers collected ...
  • De Waal, A; Mouton, F (IEEE Xplore, 2013-11)
    In this paper the authors provide context to Topic Modelling as an Information Warfare technique. Topic modelling is a technique that discovers latent topics in unstructured and unlabelled collection of documents. The topic ...
  • Burke, Michael G; Sabatta, D (PRASA, 2015-11)
    Conference scheduling and organising is a particularly laborious task and can be exteremely time consuming. While many online conference platforms allow manual topic selection, these can be expensive and typically still ...
  • Sharma Grover, A; Van Huyssteen, G; Calteaux, K (ACM Digital libary, 2013-01)
    In this paper we introduce a solution for disease surveillance and monitoring in the primary animal health care (PAHC) domain that uses inbound voice-based services and voice- and text-based outbound services for connecting ...
  • Barnard, E; Cloete, L; Patel, Hina M; Coetzee, L (2003-09)
    Government regulations have combined with a tremendous growth in prepaid cellular telephony to bring telephone connectivity to an unprecedented number of South African citizens – thus creating an ideal platform for delivering ...
  • 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 ...
  • Pretorius, L; Schwitter, R (2009-06)
    In this paper researchers discuss a number of structural problems that are faced with when designing a machine-oriented controlled natural language for Afrikaans taking the underlying principles of Attempto Controlled ...
  • Van Heerden, CJ; Barnard, E (PRASA 2010, 2010-11)
    In this article, the authors investigate the relationship between SVM hyperparameters for linear and RBF kernels and classification accuracy. The process of finding SVM hyperparameters usually involves a gridsearch, which ...
  • Badenhorst, J; Davel, MH; Barnard, E (PRASA, 2011-11)
    The authors propose a piecewise-linear model for the temporal trajectories of Mel Frequency Cepstral Coefficients during phone transitions. As with conventional Hidden Markov Models, the parameters of the model can be ...
  • Botha, G; Barnard, E (PRASA, 2005-11)
    Many applications of pattern recognition to natural language processing require large text corpora in a specified language. For many of the languages of the world, such corpora are not readily available, but significant ...
  • Marais, Laurette; Van Zijl, L (Springer Nature, 2016-07)
    We investigate self-verifying nondeterministic finite automata, in the case of unary symmetric difference nondeterministic finite automata (SV-XNFA). We show that there is a family of languages Ln=2 which can always be ...
  • Sahraeian, R; van Compernolle, D; De Wet, Febe (International Speech Communication Association, 2015-09)
    Conventional acoustic modeling involves estimating many parameters to effectively model feature distributions. The sparseness of speech and text data, however, degrades the reliability of the estimation process and makes ...
  • Kleynhans, N; De Wet, Febe; Barnard, E (IEEE, 2015-11)
    Large amounts of untranscribed audio data are generated every day. These audio resources can be used to develop robust acoustic models that can be used in a variety of speech-based systems. Manually transcribing this data ...

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