LVG Trie File Format

I. File Distribution (data for rules)

• im.rul
• plural.rul
• verbinfl.rul

• dm.rul

II. File Format

There are four different types of data specified in a file. They are:

1. Comments: lines start with #
2. Rules: lines with a format of
   key | Input Category | Input Inflection | value | Output Category | Output Inflection
3. Exceptions: lines start with space, follow with key | value;
4. Another file for additional rules: lines start with #include "file name"

These types of format work all right. However, they are not intuited to human and thus hard to maintain. A new format is proposed and used to improve its maintainability:

1. Comments: lines start with #
2. Rules: lines start with RULE:
3. Exceptions: lines start with EXCEPTION:
4. Another file: lines start with FILE:
5. Standardize the abbreviation of Category and Inflection to be consistent through all lvg components.
   • Category: noun, verb, adj, adv
   • Inflection: base
     singular, plural
     infinitive, pres, past, presPart, pastPart
     positive, comparative, superlative

< Example >
# This is a comments
RULE: e$|adj|positive|er$|adj|comparative
EXCEPTION: inhale|inhaler;
FILE: verbinfl.rul

III. File Characteristics

• All rules and exceptions are bi-directional (forward and reverse)
• key is used as a pattern to match the input term
• value is used as a pattern to change the input term for output
• Exceptions are the exceptions for the rule that locate right above them

• key in a rule is called input suffix
• value in a rule is called output suffix
• WildCards are used in input suffix and output suffix
• input category must be one of: adj, adv, noun or verb
• input inflection must be one of: base, singular, positive, infinitive, plural, comparative, superlative, pres, presPart, past, pastPart
• output category must be one of: adj, adv, noun or verb
• output inflection must be one of: base, singular, positive, infinitive, plural, comparative, superlative, pres, presPart, past, pastPart