Publications

Marelie Davel

Conference papers/proceedings

J. Badenhorst, M.H. Davel and E. Barnard, "Analysing co-articulation using frame-based feature trajectories," in Proceedings of the 21st Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Stellenbosch, South Africa, November 2010, pp. 13-18.

E. Barnard, M.H. Davel and G.B. van Huyssteen, "Speech technology for information access: a South African case study," in Proceedings of the AAAI Spring Symposium on Artificial Intelligence for Development (AI-D), Palo Alto, California, March 2010, pp. 8-13.

M.H. Davel and F. de Wet, "Verifying pronunciation dictionaries using conflict analysis," in

T. Modipa and M.H. Davel, "Pronunciation modelling of foreign words for Sepedi ASR," in Proceedings of the 21st Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Stellenbosch, South Africa, November 2010, pp. 185-189.

T. Modipa, M. Davel and F. de Wet, "Acoustic modelling of Sepedi affricates for ASR," in Proceedings of the 2010 Annual Research Conference of the South African Institute for Computer Scientists and Information Technologists (SAICSIT), Bela-Bela, South Africa, October 2010, pp. 394-398.

C. van Heerden, E. Barnard, M. Davel, C. van der Walt, E. van Dyk, M. Feld and C. Müller, "Combining regression and classification methods for improving automatic speaker age recognition," in Proceedings of the International Conference on Acoustics and Signal Processing (ICASSP), Dallas, Texas, March 2010, pp. 5174-5177.

C. van Heerden, N. Kleynhans, E. Barnard and M. Davel, "Pooling ASR data for closely related languages," in Proceedings of the Workshop on Spoken Languages Technologies for Under-Resourced Languages (SLTU 2010), Penang, Malaysia, May 2010, pp. 17-23.

G.B. van Huyssteen and M.H. Davel, "Learning rules and categorization networks for language standardization," in Proceedings of the NAACL HLT Workshop on Extracting and Using Constructions in Computational Linguistics (EUCCL), Los Angeles, California, June 2010, pp. 39-46.

J. Badenhorst, C. van Heerden, M. Davel and E. Barnard, "Collecting and evaluating speech recognition corpora for nine southern Bantu languages," in Proceedings of the 12th Conference of the European Chapter of the Association for Computational Linguistics (EACL), Athens, Greece, March 2009, pp. 1-8.

E. Barnard, M. Davel and C. van Heerden, "ASR Corpus design for resource-scarce languages," in Proceedings of the 10th Annual Conference of the International Speech Communication Association (Interspeech), Brighton, United Kingdom, September 2009, pp. 2847-2850.

E. Barnard, C. van der Walt, M. Davel, C. van Heerden, F. Senekal and T. Naidoo, "Learning structured representations of data," in Proceedings of the 20th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Stellenbosch, South Africa, November 2009, pp. 1-6.

M. Davel and O. Martirosian, "Pronunciation dictionary development in resource-scarce environments," in Proceedings of the 10th Annual Conference of the International Speech Communication Association (Interspeech), Brighton, United Kingdom, September 2009, pp. 2851-2854.

L. Loots, M. Davel, E. Barnard and T. Niesler, "Comparing manually-developed and data-driven rules for P2P learning," in Proceedings of the 20th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Stellenbosch, South Africa, November 2009, pp. 35-40.

T. Modipa, F. de Wet and M. Davel, "ASR Performance analysis of an experimental call routing system," in Proceedings of the 20th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Stellenbosch, South Africa, November 2009, pp. 127-130.

C. van Heerden, E. Barnard and M. Davel, "Basic speech recognition for spoken dialogues," in Proceedings of the 10th Annual Conference of the International Speech Communication Association (Interspeech), Brighton, United Kingdom, September 2009, pp. 3003-3006.

J.A.C. Badenhorst and M.H. Davel, "Data requirements for speaker independent acoustic models," in Proceedings of the 19th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Cape Town, South Africa, November 2008, pp. 147-152.

E. Barnard, M. Plauché and M. Davel, "The Utility of spoken dialog systems," in Proceedings of the 2008 IEEE Workshop on Spoken Language Technology (SLT), Goa, India, December 2008, pp. 13-16.

O. Martirosian and M. Davel, "Acoustic analysis of diphthongs in standard South African English," in Proceedings of the 19th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Cape Town, South Africa, November 2008, pp. 153-158.

M. Peche, M. Davel and E. Barnard, "Porting a spoken language identification system to a new environment," in Proceedings of the 19th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Cape Town, South Africa, November 2008, pp. 103-107.

J.A.C. Badenhorst and M. Davel, "The effect of speech rate variation on acoustic phone stability in Afrikaans speech recognition," in Proceedings of the 18th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Pietermaritzburg, South Africa, November 2007, pp. 6-9.

O. Martirosian and M. Davel, "Error analysis of a public domain pronunciation dictionary," in Proceedings of the 18th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Pietermaritzburg, South Africa, November 2007, pp. 13-16.

M. Peche, M. Davel and E. Barnard, "Phonotactic spoken language identification with limited training data," in Proceedings of the 8th Annual Conference of the International Speech Communication Association (Interspeech), Antwerp, Belgium, August 2007, pp. 1537-1540.

M. Davel and E. Barnard, "Effort and accuracy during language resource generation: A pronunciation prediction case study," in Proceedings of the 17th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Parys, South Africa, November 2006, pp. 14-17.

J.A. Louw and M. Davel, "Halfphones: A backoff mechanism for diphone unit selection synthesis," in Proceedings of the 17th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Parys, South Africa, November 2006, pp. 42-45.

E. Barnard and M. Davel, "Automatic error detection in alignments for speech synthesis," in Proceedings of the 17th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Parys, South Africa, November 2006, pp. 53-56.

N. Govender, C. Kuun, V. Zimu, E. Barnard and M. Davel, "Computational models of prosody in the Nguni languages", in Proceedings of the ISCA Workshop on Multilingual Speech and Language Processing (MULTILING-2006), Stellenbosch, South Africa, April 2006.

M. Davel and E. Barnard, "Developing consistent pronunciation models for phonemic variants", in Proceedings of the 9th International Conference on Spoken Language Processing (Interspeech), Pittsburgh, Pennsylvania, September 2006, pp. 1760-1764.

M. Davel and E. Barnard, "Bootstrapping Pronunciation Dictionaries - a South African case study," in Proceedings of the CSIR Research and Innovation Conference, Pretoria, South Africa, February 2006.

M. Davel and E. Barnard, "Extracting pronunciation rules for phonemic variants," in Proceedings of the ISCA Workshop on Multilingual Speech and Language Processing (MULTILING-2006), Stellenbosch, South Africa, April 2006.

M. Davel and E. Barnard, "Obtaining a minimal set of rewrite rules," in Proceedings of the 16th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Langebaan, South Africa, November 2005, pp. 139-144.

M. Davel and E. Barnard, "Bootstrapping pronunciation dictionaries: practical issues," in Proceedings of the 9th European Conference on Speech Communication and Technology (Interspeech), Lisbon, Portugal, September 2005, pp. 139-144.

N. Govender, E. Barnard and M. Davel, "Developing intonation corpora for isiXhosa and isiZulu," in Proceedings of the 16th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Langebaan, South Africa, November 2005, pp. 129-132.

N. Govender, E. Barnard and M. Davel, "Fundamental frequency and tone in isiZulu: initial experiments," in Proceedings of the 9th European Conference on Speech Communication and Technology (Interspeech), Lisbon, Portugal, September 2005, pp. 1417-1420.

C. Kuun, V. Zimu, E. Barnard and M. Davel, "Statistical investigations into isiZulu intonation," in Proceedings of the 16th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Langebaan, South Africa, November 2005, pp. 111-115.

J.A. Louw, M. Davel and E. Barnard, "A general-purpose IsiZulu speech synthesiser," in Proceedings of the 14th International Conference of the African Language Association of Southern Africa (ALASA), Johannesburg, South Africa, July 2005.

M. Davel and E. Barnard, "A default-and-refinement approach to pronunciation prediction," in Proceedings of the 15th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Grabouw, South Africa, November 2004, pp. 119-123.

M. Davel and E. Barnard, "The efficient generation of pronunciation dictionaries: Machine learning factors during bootstrapping," in Proceedings of the 8th International Conference on Spoken Language Processing (Interspeech), Jeju, Korea, October 2004, pp. 2781-2784.

M. Davel and E. Barnard, "The efficient generation of pronunciation dictionaries: Human factors during bootstrapping," in Proceedings of the 8th International Conference on Spoken Language Processing (Interspeech), Jeju, Korea, October 2004, pp. 2797-2800.

L. Joubert, V. Zimu, M. Davel and E. Barnard, "A framework for bootstrapping morphological decomposition," (abstract) in Proceedings of the 15th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Grabouw, South Africa, November 2004, p. 171.

M. Davel and E. Barnard, "Human Language Technologies in the Developing World," in Proceedings of the 12th International Conference of the African Language Association of Southern Africa (ALASA), Stellenbosch, South Africa, July 2003.

M. Davel and E. Barnard, "Bootstrapping in language resource generation," in Proceedings of the 13th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), Langebaan, South Africa, November 2003, pp. 97-100.

M. Davel, "HLT in Peacekeeping," in Proceedings of the Military Information and Communications Symposium of South Africa (MICSSA), Pretoria, South Africa, November 2003.

Journal articles

M. Peche, M.H. Davel and E. Barnard, "Development of a spoken language identification system for South African languages," SAIEE Africa Research Journal, vol. 100, no. 4, pp. 97-105, December 2009.

M. Davel and E. Barnard, "Pronunciation prediction with default & refine," Computer Speech and Language, vol. 22, pp. 374-393, October 2008.

M. Davel and E. Barnard, "Effort and accuracy during language resource generation: A pronunciation prediction case study," SAIEE Africa Research Journal, vol. 98, no. 4, pp. 124-128, December 2007.

N. Govender, E. Barnard and M. Davel, "Pitch modelling for the Nguni languages," South African Computer Journal (SACJ), vol. 38, pp. 28-39, June 2007.

M. Davel and E. Barnard, "Bootstrapping Pronunciation Dictionaries," South African Journal of Science, vol. 102, no. 7/8, pp. 322-328, July/August 2006.

J.A. Louw, M. Davel and E. Barnard, "A general-purpose IsiZulu speech synthesiser," South African Journal of African Languages, vol. 25, no. 2, pp. 1-9, November 2005.

M. Davel and E. Barnard, "Bootstrapping for the efficient development of pronunciation dictionaries," Transactions of the SAIEE: Special Issue on Pattern Recognition: Theory and Applications, pp. 6-10, March 2005.

Book / Book chapter

S. Goronzy, L. Mayfield Tomokiyo, E. Barnard and M. Davel, "Other challenges: non-native speech, dialects, accents, and local interfaces," in Multilingual Speech Processing, edited by T. Schultz and K. Kirchoff, Academic Press, Elsevier, April 2006, pp. 273-316.

Thesis

M. Davel, "Pronunciation modelling and bootstrapping", PhD thesis, University of Pretoria, Pretoria, South Africa, 2005.