Sigrid Ewert

Publication Activity (10 Years)

Years Active: 1998-2021
Publications (10 Years): 6

Top Topics

Regular Expressions

Deterministic Finite Automata

Contextual Information

Top Venues

J. Autom. Lang. Comb.

SIMULTECH (Selected Papers)

Publications

Sigrid Ewert, Joy Idahosa
Ogden's Lemma for Subclasses of Random Context Galleries. J. Autom. Lang. Comb. 26 (3-4) (2021)
Sigrid Ewert, Daria Sergeevna Tkachova
Necessary Conditions for Subclasses of Random Context Galleries. J. Autom. Lang. Comb. 25 (1) (2020)
Sigrid Ewert, Nuru Jingili, Liemiso Mpota, Ian D. Sanders
Bag context picture grammars. J. Comput. Lang. 51 (2019)
Nuru Jingili, Sigrid Ewert, Ian D. Sanders
Measuring Perceptual Similarity of Syntactically Generated Pictures. SIMULTECH (2018)
Suna Bensch, Sigrid Ewert
Describing Resource Allocation to Dynamically Formed Groups with Grammars. SIMULTECH (Selected Papers) (2017)
Suna Bensch, Sigrid Ewert, Mpho Raborife
Modelling the Formation of Virtual Buying Cooperatives with Grammars of Regulated Rewriting. SIMULTECH (2017)
Abejide Ade-Ibijola, Sigrid Ewert, Ian Douglas Sanders
Introducing Code Adviser: A DFA-driven Electronic Programming Tutor. CIAA (2015)
Mpho Raborife, Sigrid Ewert, Sabine Zerbian
Improving a tone labeling algorithm for Sesotho. Lang. Resour. Evaluation 49 (1) (2015)
Benjamin Okundaye, Sigrid Ewert, Ian D. Sanders
Perceptual Similarity of Images Generated using Tree Grammars. SAICSIT (2014)
Abejide Ade-Ibijola, Sigrid Ewert, Ian D. Sanders
Abstracting and Narrating Novice Programs Using Regular Expressions. SAICSIT (2014)
Sigrid Ewert, Andries P. J. van der Walt
Necessary conditions for subclasses of random context languages. Theor. Comput. Sci. 475 (2013)
Sigrid Ewert, Max Rabkin
Generalized Random Context Picture Grammars: The State of the Art. Languages Alive (2012)
Mpho Raborife, Sabine Zerbian, Sigrid Ewert
Empirical measurements on a Sesotho tone labeling algorithm. SLTU (2012)
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) (2008)
Charita Bhika, Sigrid Ewert, Ryan Schwartz, Mutahi Waruhiu
Table-Driven Context-Free Picture Grammars. Int. J. Found. Comput. Sci. 18 (6) (2007)
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)
H. Kruger, Sigrid Ewert
Translating mutually recursive function systems into generalized random context picture grammars. South Afr. Comput. J. 36 (2006)
Bradley Atcheson, Sigrid Ewert, Dylan A. Shell
A note on the generative capacity of random context. South Afr. Comput. J. 36 (2006)
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 (2005)
Nicole Boden, Bradley Atcheson, Sigrid Ewert
GRIFFIN : an automated grcpg and IFS processing tool. South Afr. Comput. J. 33 (2004)
Andries P. J. van der Walt, Sigrid Ewert
A property of random context picture grammars. Theor. Comput. Sci. 301 (1-3) (2003)
Sigrid Ewert, Andries P. J. van der Walt
The Power and Limitations of Random Context. Grammars and Automata for String Processing (2003)
Frank Drewes, Sigrid Ewert, Renate Klempien-Hinrichs, Hans-Jörg Kreowski
Computing Raster Images from Grid Picture Grammars. J. Autom. Lang. Comb. 8 (3) (2003)
Sigrid Ewert, Andries P. J. van der Walt
A pumping lemma for random permitting context languages. Theor. Comput. Sci. 270 (1-2) (2002)
Sigrid Ewert, T. Wessels
Processing context-sensing picture grammars on a network. South Afr. Comput. J. 27 (2001)
Andries P. J. van der Walt, Sigrid Ewert
A shrinking lemma for random forbidding context languages. Theor. Comput. Sci. 237 (1-2) (2000)
Frank Drewes, Sigrid Ewert, Renate Klempien-Hinrichs, Hans-Jörg Kreowski
Computing Raster Images from Grid Picture Grammars. CIAA (2000)
Sigrid Ewert, Andries P. J. van der Walt
Generating Pictures Using Random Permitting Context. Int. J. Pattern Recognit. Artif. Intell. 13 (3) (1999)
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) (1999)
Sigrid Ewert, Andries P. J. van der Walt
Shrink Indecomposable Fractals. J. Univers. Comput. Sci. 5 (9) (1999)
Sigrid Ewert, Andries P. J. van der Walt
Generating Pictures Using Random Forbidding Context. Int. J. Pattern Recognit. Artif. Intell. 12 (7) (1998)