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SLE 2020
Sun 15 - Fri 20 November 2020 Online Conference
co-located with SPLASH 2020
Mon 16 Nov 2020 13:40 - 14:00 at SPLASH -
Tue 17 Nov 2020 01:40 - 02:00 at SPLASH -

We describe gtutr, an interactive feedback system designed to assist students in developing context-free grammars and corresponding ANTLR parsers. It intelligently controls students’ access to a large test suite for the target language. After each submission, gtutr analyzes any failing tests and uses the Needleman-Wunsch sequence alignment algorithm over the tests’ rule traces to identify and eliminate similar failing tests. This reduces the redundancy in the feedback that is given to the student and prevents them from being overloaded. gtutr uses gamification to encourage independent problem solving by students: it gives as little information as possible, and students need to prompt the system for further details such as failing tests similar to or different from already seen tests, or even for hints about rules that are the most likely to contain faults. The system visualizes test outcomes over multiple submissions, helping students to keep track of the effects of their changes as their grammar development progresses. gtutr also tracks the students’ information requests and uses this to attenuate marks following an instructor-set penalty schema.

Mon 16 Nov
Times are displayed in time zone: (GMT-05:00) Central Time (US & Canada) change

13:00 - 14:20: SLE/GPCE at SPLASH +12h
13:00 - 13:20
Talk
SLE/GPCE
Christoff RossouwStellenbosch University, Bernd FischerStellenbosch University
13:20 - 13:40
Talk
SLE/GPCE
Phillip van HeerdenStellenbosch University, Moeketsi RaselimoStellenbosch University, Konstantinos (Kostis) SagonasUppsala University, Sweden, Bernd FischerStellenbosch University
13:40 - 14:00
Talk
SLE/GPCE
Chelsea BarraballStellenbosch University, Moeketsi RaselimoStellenbosch University, Bernd FischerStellenbosch University
14:00 - 14:20
Talk
SLE/GPCE
Dimitri RacordonUniversity of Geneva, Centre Universitaire d'Informatique, Geneva, Switzerland, Didier BuchsUniversity of Geneva, Centre Universitaire d'Informatique, Geneva, Switzerland

Tue 17 Nov
Times are displayed in time zone: (GMT-05:00) Central Time (US & Canada) change

01:00 - 02:20: SLE/GPCE at SPLASH
01:00 - 01:20
Talk
SLE/GPCE
Christoff RossouwStellenbosch University, Bernd FischerStellenbosch University
01:20 - 01:40
Talk
SLE/GPCE
Phillip van HeerdenStellenbosch University, Moeketsi RaselimoStellenbosch University, Konstantinos (Kostis) SagonasUppsala University, Sweden, Bernd FischerStellenbosch University
01:40 - 02:00
Talk
SLE/GPCE
Chelsea BarraballStellenbosch University, Moeketsi RaselimoStellenbosch University, Bernd FischerStellenbosch University
02:00 - 02:20
Talk
SLE/GPCE
Dimitri RacordonUniversity of Geneva, Centre Universitaire d'Informatique, Geneva, Switzerland, Didier BuchsUniversity of Geneva, Centre Universitaire d'Informatique, Geneva, Switzerland