1. Department of Language and Linguistics
Introduction
Demo Grammar
References
XLE Tutorial & Demo
Kakia Chatsiou
Department of Language and Linguistics
University of Essex
LG517. Introduction to LFG 1

2. Outline Introduction Demo Grammar References What’s XLE?
The basic Grammar file
Examining a rule
Examining a lexical entry
Demo Grammar
Assumptions
Coverage
Demonstration
References
Aikaterini K. Chatsiou 2

3. Outline Introduction Demo Grammar References What’s XLE?
The basic Grammar file
Examining a rule
Examining a lexical entry
Demo Grammar
Assumptions
Coverage
Demonstration
References
Aikaterini K. Chatsiou 3

4. Introduction What’s XLE? Xerox Linguistics Environment
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
What’s XLE?
Xerox Linguistics Environment
A computational environment developed to facilitate the writing and debugging of Lexical Functional Grammars
C-structure, f-structure, s-structure, and further projections can be defined
Includes other activities related to grammar development: analysing performance, test suites, generation, treebanks and other.
Aikaterini K. Chatsiou 4

5. Introduction The basic grammar file. 5 What’s XLE? Introduction
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
Aikaterini K. Chatsiou 5

6. Introduction The basic grammar file. Grammar Version ID 6 What’s XLE?
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
Grammar
Version ID
Aikaterini K. Chatsiou 6

7. Introduction The basic grammar file. Language ID 7 What’s XLE?
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
Language ID
Aikaterini K. Chatsiou 7

8. Introduction The basic grammar file. Component ID 8 What’s XLE?
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
Component ID
Aikaterini K. Chatsiou 8

9. Introduction The basic grammar file. XLE version Number 9 What’s XLE?
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
XLE version
Number
Aikaterini K. Chatsiou 9

10. Introduction The basic grammar file. 4 dashes signal the end of each
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
4 dashes
signal the
end of each
section / file
Aikaterini K. Chatsiou 10

11. Introduction The basic grammar file. here it is S(entence) The default
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
here it is
S(entence)
The default
category
when parsing
Aikaterini K. Chatsiou 11

12. Introduction The basic grammar file. here no files are included
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
here no files
are included
the list of
files to be
included,
ending in
.lfg
Aikaterini K. Chatsiou 12

13. Introduction The basic grammar file. here precedence is given to
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
here
precedence
is given to
the grammar
with version
ID TOY and
language ID
Ellinika
specification
of which
lexical entries,
rules and
templates
are given
precedence
Aikaterini K. Chatsiou 13

14. Introduction The basic grammar file. list of the grammatical
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
list of the
grammatical
relations which
must be
subcategorised
for in order to
appear in the
argument list of
of the PRED
Aikaterini K. Chatsiou 14

15. Introduction The basic grammar file. list of attributes whose values
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
list of
attributes whose
values
must contain a
PRED
Aikaterini K. Chatsiou 15

16. Introduction The basic grammar file. list of attributes which do not
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
list of
attributes
which do not
distribute
when
coordinated
Aikaterini K. Chatsiou 16

17. Introduction The basic grammar file. the category which is covert
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
the category
which is covert
in the
c-structure
(empty string)
Aikaterini K. Chatsiou 17

18. Introduction The basic grammar file. The ranking of optimality
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
The basic grammar file.
The ranking
of optimality
constraints
Aikaterini K. Chatsiou 18

19. Introduction Examining a rule Category 19 What’s XLE? Introduction
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a rule
Category
Aikaterini K. Chatsiou 19

20. Introduction Examining a rule Category Schema 20 What’s XLE?
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a rule
Category
Schema
Aikaterini K. Chatsiou 20

21. Introduction Examining a rule Defining equality 21 What’s XLE?
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a rule
Defining
equality
Aikaterini K. Chatsiou 21

22. Introduction Examining a rule Defining equality Disjunction 22
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a rule
Defining
equality
Disjunction
Aikaterini K. Chatsiou 22

23. Introduction Examining a rule  23 What’s XLE? Introduction
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a rule 
Aikaterini K. Chatsiou 23

24. Introduction Examining a rule   24 What’s XLE? Introduction
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a rule  
Aikaterini K. Chatsiou 24

25. Introduction Examining a rule Shuffle operator 25 What’s XLE?
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a rule
Shuffle operator
Aikaterini K. Chatsiou 25

26. Introduction Examining a rule Shuffle operator Comment 26 What’s XLE?
Demo Grammar
References
What’s XLE?
The basic grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a rule
Shuffle operator
Comment
Aikaterini K. Chatsiou 26

27. Introduction Examining a lexical entry grammatical category 27
Demo Grammar
References
What is XLE?
The basic Grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a lexical entry
grammatical
category
Aikaterini K. Chatsiou 27

28. Introduction Examining a lexical entry Morphological marker 28
Demo Grammar
References
What is XLE?
The basic Grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a lexical entry
Morphological
marker
Aikaterini K. Chatsiou 28

29. Introduction Examining a lexical entry Template (shortcuts) 29
Demo Grammar
References
What is XLE?
The basic Grammar file
Examining a rule
Examining a lexical entry
Introduction
Examining a lexical entry
Template
(shortcuts)
Aikaterini K. Chatsiou 29

30. Demo Grammar toy-gre7.lfg Assumptions Coverage Demonstration 30
Introduction
Demo Grammar
References
Assumptions
Coverage
Demonstration
Demo Grammar
toy-gre7.lfg
Assumptions
Coverage
Demonstration
Aikaterini K. Chatsiou 30

31. Demo Grammar Assumptions
Introduction
Demo Grammar
References
Assumptions
Coverage
Demonstration
Demo Grammar
Assumptions
All four possible Modern Greek word orders (VSO, SVO, OSV and OVS) are equally acceptable and grammatical
Modern Greek Word order is represented non-configurationally (Tzanidaki, 1996; Alexopoulou, 1999 among others) :
No morphology. For each word there is a separate lexical entry for each case, gender and number.
Aikaterini K. Chatsiou 31

32. Demo Grammar Coverage All 4 word orders (ex.1-4)
Introduction
Demo Grammar
References
Assumptions
Coverage
Demonstration
Demo Grammar
Coverage
All 4 word orders (ex.1-4)
Pro-drop character of the language (empty string node e as a disjunction in the subject NP c-structure node) (ex.5-6)
Subcategorization frames of intransitive, transitive and ditransitive verbs (including the realisation of the OBL object of ditransitive verbs either through an NP in GEN or a PP[se] (ex 7-10), successfully ruling out sentences like (11)
successful assignment of the appropriate grammatical functions to constituents according to their case (NOMSUBJ, ACCOBJ, GENOBL) (ex. 12), ruling out ex.13
number, case and gender assignment among the constituents of an NP or a PP (ex.14-17)
Aikaterini K. Chatsiou 32

33. Demo Grammar Demonstration 33 Introduction Demo Grammar References
Assumptions
Coverage
Demonstration
Demo Grammar
Demonstration
Aikaterini K. Chatsiou 33

34. References XLE walkthrough.
Introduction
Demo Grammar
References
References
XLE walkthrough.
Tzanidaki, Dimitra Irini ”Configurationality and Greek Clause structure”. UCL Working Papers in Linguistics.
Alexopoulou, Theodora The syntax of Discourse functions in Greek; a non configurational approach. PhD thesis, University of Edinburg.
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