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ORCIDSigrid Ewert
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2020 – today
- 2021
[j20]Sigrid Ewert, Joy Idahosa:
Ogden's Lemma for Subclasses of Random Context Galleries. J. Autom. Lang. Comb. 26(3-4): 197-220 (2021)- 2020
- [j19]Sigrid Ewert, Daria Sergeevna Tkachova:
Necessary Conditions for Subclasses of Random Context Galleries. J. Autom. Lang. Comb. 25(1): 21-35 (2020)
2010 – 2019
- 2019
- [j18]Sigrid Ewert
, Nuru Jingili, Liemiso Mpota, Ian D. Sanders:
Bag context picture grammars. J. Comput. Lang. 51: 214-221 (2019) - 2018
- [c11]Nuru Jingili, Sigrid Ewert, Ian D. Sanders:
Measuring Perceptual Similarity of Syntactically Generated Pictures. SIMULTECH 2018: 244-255 - 2017
- [c10]Suna Bensch, Sigrid Ewert, Mpho Raborife:
Modelling the Formation of Virtual Buying Cooperatives with Grammars of Regulated Rewriting. SIMULTECH 2017: 45-55 - [c9]Suna Bensch, Sigrid Ewert:
Describing Resource Allocation to Dynamically Formed Groups with Grammars. SIMULTECH (Selected Papers) 2017: 153-176 - 2015
- [j17]Mpho Raborife, Sigrid Ewert, Sabine Zerbian:
Improving a tone labeling algorithm for Sesotho. Lang. Resour. Evaluation 49(1): 19-50 (2015) - [c8]Abejide Ade-Ibijola, Sigrid Ewert, Ian Douglas Sanders:
Introducing Code Adviser: A DFA-driven Electronic Programming Tutor. CIAA 2015: 307-312 - 2014
- [c7]Abejide Ade-Ibijola, Sigrid Ewert, Ian D. Sanders:
Abstracting and Narrating Novice Programs Using Regular Expressions. SAICSIT 2014: 19 - [c6]Benjamin Okundaye, Sigrid Ewert, Ian D. Sanders:
Perceptual Similarity of Images Generated using Tree Grammars. SAICSIT 2014: 286 - 2013
- [j16]Sigrid Ewert, Andries P. J. van der Walt:
Necessary conditions for subclasses of random context languages. Theor. Comput. Sci. 475: 66-72 (2013) - 2012
- [c5]Sigrid Ewert, Max Rabkin:
Generalized Random Context Picture Grammars: The State of the Art. Languages Alive 2012: 56-74 - [c4]Mpho Raborife, Sabine Zerbian, Sigrid Ewert:
Empirical measurements on a Sesotho tone labeling algorithm. SLTU 2012: 133-138
2000 – 2009
- 2008
- [j15]Frank Drewes, Christine du Toit, Sigrid Ewert, Brink van der Merwe, Andries P. J. van der Walt:
Bag Context Tree Grammars. Fundam. Informaticae 86(4): 459-480 (2008) - 2007
- [j14]Charita Bhika, Sigrid Ewert, Ryan Schwartz, Mutahi Waruhiu:
Table-Driven Context-Free Picture Grammars. Int. J. Found. Comput. Sci. 18(6): 1151-1160 (2007) - 2006
- [j13]Bradley Atcheson, Sigrid Ewert, Dylan A. Shell:
A note on the generative capacity of random context. South Afr. Comput. J. 36: 95-98 (2006) - [j12]H. Kruger, Sigrid Ewert:
Translating mutually recursive function systems into generalized random context picture grammars. South Afr. Comput. J. 36: 99-109 (2006) - [c3]Frank Drewes, Christine du Toit, Sigrid Ewert, Brink van der Merwe, Andries P. J. van der Walt:
Bag Context Tree Grammars. Developments in Language Theory 2006: 226-237 - 2005
- [j11]Frank Drewes, Christine du Toit, Sigrid Ewert, Johanna Högberg, Brink van der Merwe, Andries P. J. van der Walt:
Random context tree grammars and tree transducers. South Afr. Comput. J. 34: 11-25 (2005) - 2004
- [j10]Nicole Boden, Bradley Atcheson, Sigrid Ewert:
GRIFFIN : an automated grcpg and IFS processing tool. South Afr. Comput. J. 33: 24-37 (2004) - 2003
- [j9]Frank Drewes, Sigrid Ewert, Renate Klempien-Hinrichs, Hans-Jörg Kreowski:
Computing Raster Images from Grid Picture Grammars. J. Autom. Lang. Comb. 8(3): 499-519 (2003) - [j8]Andries P. J. van der Walt, Sigrid Ewert:
A property of random context picture grammars. Theor. Comput. Sci. 301(1-3): 313-320 (2003) - [c2]Sigrid Ewert, Andries P. J. van der Walt:
The Power and Limitations of Random Context. Grammars and Automata for String Processing 2003: 33-44 - 2002
- [j7]Sigrid Ewert, Andries P. J. van der Walt:
A pumping lemma for random permitting context languages. Theor. Comput. Sci. 270(1-2): 959-967 (2002) - 2001
- [j6]Sigrid Ewert, T. Wessels:
Processing context-sensing picture grammars on a network. South Afr. Comput. J. 27: 57-63 (2001) - 2000
- [j5]Andries P. J. van der Walt, Sigrid Ewert:
A shrinking lemma for random forbidding context languages. Theor. Comput. Sci. 237(1-2): 149-158 (2000) - [c1]Frank Drewes, Sigrid Ewert, Renate Klempien-Hinrichs, Hans-Jörg Kreowski:
Computing Raster Images from Grid Picture Grammars. CIAA 2000: 113-121
1990 – 1999
- 1999
- [j4]Sigrid Ewert, Andries P. J. van der Walt:
Generating Pictures Using Random Permitting Context. Int. J. Pattern Recognit. Artif. Intell. 13(3): 339-355 (1999) - [j3]Sigrid Ewert, Andries P. J. van der Walt:
A Hierarchy Result for Random Forbidding Context Picture Grammars. Int. J. Pattern Recognit. Artif. Intell. 13(7): 997-1008 (1999) - [j2]Sigrid Ewert, Andries P. J. van der Walt:
Shrink Indecomposable Fractals. J. Univers. Comput. Sci. 5(9): 521-531 (1999) - 1998
- [j1]Sigrid Ewert, Andries P. J. van der Walt:
Generating Pictures Using Random Forbidding Context. Int. J. Pattern Recognit. Artif. Intell. 12(7): 939-950 (1998)
Coauthor Index
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