Generate Inflectional Variants - Specifying Output Categories and Inflections

• Short Description: Generate inflectional variants, specifying the Bit OR'ed output categories, and output inflections.
  
  
• Full Description:

  The inflection operation can be qualified to restrict output category and inflection by specifying the category bit vector and the inflection bit vector.

  The category values can be OR'ed from the following values:

  Category	Value
  adj	1
  adv	2
  aux	4
  compl	8
  conj	16
  det	32
  modal	64
  noun	128
  prep	256
  pron	512
  verb	1024
  all	2047

  The inflection values can be OR'ed from the following values:

  Inflection	Value
  base	1
  comparative	2
  superlative	4
  plural	8
  presPart	16
  past	32
  pastPart	64
  pres3	128
  positive	256
  singular	512
  infinitive	1024
  pres123p	2048
  pastNeg	4096
  pres123pNeg	8192
  pres1s	16384
  past1p23pNeg	32768
  past1p23p	65536
  past1s3sNeg	131072
  pres1p23p	262144
  pres1p23pNeg	524288
  past1s3s	1048576
  pres	2097152
  pres3sNeg	4194304
  presNeg	8388608
  all	16777215

  In some domains, nouns are the vast majority of terms in the vocabulary. Furthermore, for terms which can be interpreted as either nouns or as some other categories, the noun sense is much more likely. Under these circumstances, one might want to restrict one's output to nouns and ignore the other senses of words. Further, many indexing vocabularies have nouns in their plural form rather than in their singular form, so one might want to restrict one's output to plural nouns.

  Users may input "all" instead of "2047" or "16777215" to represent all categories or all inflections, respectively. For instance, users may construct command such as "-f:ici~128+all" to get all inflectional variants for all nouns (including all inflections).

  The results are sorted as in inflection flow component. It is sorted by the frequency of category, length, and case insensitive alphabetical order.

  If the -m flag is specified, two types of possible information may be appended to the outputs. The formats of possible information are:

  • |FACT|uninflected term|category|uninflected inflection|inflected term|category|inflected inflection|EUI|
  • |RULE|uninflected term|matched pattern|category|uninflected inflection|replaced pattern|category|inflected inflection|
  
  
  
• Difference:
  1. Please refer to inflections.
  2. In the Java version, both options of category and inflection must be specified. They cannot be omitted. In other words, option flag, "all", is needed if users don't care about the option. For example, if you would like to get the noun of a input and don't care about the inflections, you may use -f:ici~128+16777215.
  3. EUI information is added into -m option (fact) in 2012
  
  
  
• Features:
  1. Fact: Find all inflectional variants from inflection table.
  2. Rules: Find all inflectional variants from morphology rules.
  3. Assign category and inflection for all outputs
  4. Filter output according to the restricted categories and inflections.
  5. Filter output according to the restriction flag (-ki)
  6. Display output by the frequency of categories.
  
  
  
• Symbol: ici~LONG+LONG
  
  
• Examples:

  
  shell> lvg -f:ici~128+8 -m
  elderly
  elderly|elderly|128|8|ici|1|FACT|elderly|noun|base|elderly|noun|plural|E0024667|
  elderly|elderlies|128|8|ici|1|FACT|elderly|noun|base|elderlies|noun|plural|E0024667|
  
  leaf
  leaf|leafs|128|8|ici|1|FACT|leaf|noun|base|leafs|noun|plural|E0037070|
  leaf|leaves|128|8|ici|1|FACT|leaf|noun|base|leaves|noun|plural|E0037070|
  
  neoplasm
  neoplasm|neoplasms|128|8|ici|1|FACT|neoplasm|noun|base|neoplasms|noun|plural|E0042193|
  
  shell> lvg -f:ici~128+all -m
  neoplasm
  neoplasm|neoplasm|128|1|ici|1|FACT|neoplasm|noun|base|neoplasm|noun|base|E0042193|
  neoplasm|neoplasm|128|512|ici|1|FACT|neoplasm|noun|base|neoplasm|noun|singular|E0042193|
  neoplasm|neoplasms|128|8|ici|1|FACT|neoplasm|noun|base|neoplasms|noun|plural|E0042193|
  
  shell> lvg -f:ici~all+8 -m
  neoplasm
  neoplasm|neoplasms|128|8|ici|1|FACT|neoplasm|noun|base|neoplasms|noun|plural|E0042193|
  
  left
  left|left|128|8|ici|1|FACT|left|noun|base|left|noun|plural|E0037124|
  left|lefts|128|8|ici|1|FACT|left|noun|base|lefts|noun|plural|E0037124|
  

  More examples
  
  
• Implementation Logic:
  1. Call ToInflection.InflectWords (sorted)
  2. Filter out results by output categories and inflections.
  
  
• Source Code: ToInflectionByCatInfl.java
  
  
• Hierarchy: Object -> Transformation -> ToInflectionByCatInfl