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Browsing by Author "Marais, Laurette"

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Approximating a Zulu GF concrete syntax with a neural network for natural language understanding

Author: Marais, Laurette Date: Sep 2021 Multilingual Grammatical Framework (GF) domain grammars have been used in a variety of different applications, including question answering, where concrete syntaxes for parsing questions and generating answers are typically required for each ... Read more
AwezaMed: A multilingual, multimodal speech-to-speech translation application for maternal health care

Author: Marais, Laurette ; Louw, Johannes A ; Badenhorst, Jacob AC ; Calteaux, Karen V ; Wilken, Ilana ; Van Niekerk, Nina ; Stein, Glenn Date: Jul 2020 The language contexts of multilingual developing countries such as South Africa are often characterised by communication challenges resulting from language differences. AwezaMed is a multilingual, multimodal speech-to-speech translation ... Read more
Bringing children’s dictionaries to digital life

Author: Wilken, Ilana ; Marais, Laurette Date: Nov 2023 South Africa is facing a literacy crisis, with the latest PIRLS results showing that 8 out of 10 learners cannot read for basic comprehension by the time they leave the foundation phase. In this climate, the development of strategies to assist ... Read more
Descriptional complexity of non-unary self-verifying symmetric difference automata

Author: Marais, Laurette ; Van Zijl, L Date: Sep 2017 Previously, self-verifying symmetric difference automata were defined and a tight bound of 2^n-1-1 was shown for state complexity in the unary case. We now consider the non-unary case and show that, for every n at least 2, there is a regular ... Read more
Descriptional complexity of non-unary self-verifying symmetric difference automata

Author: Marais, Laurette ; Van Zijl, L Date: May 2022 Unary self-verifying symmetric difference automata have a known tight bound of 2n-1-1 for their state complexity. We now consider the non-unary case and show that, for every n=2, there is a regular language Ln accepted by a non-unary ... Read more
Exploiting a multilingual semantic Machine translation architecture for knowledge representation of patient information for Covid-19

Author: Marais, Laurette ; Pretorius, L Date: Feb 2021 AwezaMed Covid-19 is a multilingual speech-to-speech translation application for screening patients for Covid-19. It enables Englishspeaking health care providers (HCPs) to conduct screenings by asking questions to patients in all other ... Read more
Extending the usage of adjectives in the Zulu AfWN

Author: Marais, Laurette ; Pretorius, L Date: Jan 2023 The African languages Wordnet (AfWN) for Zulu (ZWN) was built using the expand approach, which relies on the translation of concepts in the Princeton WordNet (PWN), while retaining their PWN lexical categories. In this paper the focus is on ... Read more
A GF miniature resource grammar for Tswana: modelling the proper verb

Author: Pretorius, L ; Marais, Laurette ; Berg, A Date: Mar 2017 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 a de facto framework ... Read more
Morphology-based investigation of differences between spoken and written isiZulu

Author: Marais, Laurette ; Wilken, Ilana Date: Nov 2021 Research attempting to describe and quantify the differences between spoken and written language has been done for languages such as English, but not for isiZulu. In this paper, we present a quantitative investigation into such differences ... Read more
Multimodal, multilingual dynamic stories for literacy development and language learning

Author: Marais, Laurette ; Wilken, Ilana ; Pretorius, L ; Posthumus, L Date: Jul 2023 © 2023 Copyright held by the owner/author(s). Paper presented at the 5th International Conference on Conversational User Interfaces, Eindhoven, The Netherlands, 19-21 July 2023 Read more
Parsing IsiZulu text using grammatical framework

Author: Marais, Laurette ; Pretorius, L Date: Jul 2023 While Grammatical Framework (GF) resource grammars are primarily intended as linguistic software libraries, they can also be employed to enable syntax parsing via the GF runtime system. The isiZulu resource grammar (ZRG) in conjunction with ... Read more
The state complexity of language operations on XNFA-succinct unary regular languages

Author: Marais, Laurette ; Van Zijl, L Date: Sep 2018 Given two unary languages accepted by symmetric difference non-deterministic finite automata, we establish bounds on the state complexity of their union, intersection, relative complement and symmetric difference. For languages L1 and L2 ... Read more
State complexity of unary SV-XNFA with different acceptance conditions

Author: Marais, Laurette ; Van Zijl, Lynette Date: Jul 2017 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 for the symmetric ... Read more
Unary self-verifying symmetric difference automata

Author: Marais, Laurette ; Van Zijl, L Date: Jul 2016 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 represented non-trivially ... Read more

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Browsing by Author "Marais, Laurette"

Browsing by Author "Marais, Laurette"

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