Talk:Constraint-based lexical selection module

Rule formats

Note: Felipe doesn't like "skip".

can't say I do either … sounds like a command rather than a constraint --unhammer 11:42, 18 November 2011 (UTC)

also, in the <or>, should we read them as independent of each other? that's a bit confusing since otherwise they're all required and have a certain order --unhammer 11:42, 18 November 2011 (UTC)

The regular expression for the OR below is:

(nazi<adj>[0-9A-Za-z <>]*|totalitari<adj>[0-9A-Za-z <>]*|feixista<adj>[0-9A-Za-z <>]*|franquista<adj>[0-9A-Za-z <>]*|militar<adj>[0-9A-Za-z <>]*|fiscal<adj>[0-9A-Za-z <>]*)

- Francis Tyers 11:53, 18 November 2011 (UTC)

1

  <rule>
    <remove lemma="règim" tags="n.*">
      <acception lemma="diet" tags="n.*"/>
    </remove>
    <or>
      <skip lemma="nazi" tags="adj.*"/>
      <skip lemma="totalitari" tags="adj.*"/>
      <skip lemma="feixista" tags="adj.*"/>
      <skip lemma="franquista" tags="adj.*"/>
      <skip lemma="militar" tags="adj.*"/>
      <skip lemma="fiscal" tags="adj.*"/>
    </or>
  </rule>

2

  <rule>
    <remove lemma="règim" tags="n.*">
      <acception lemma="diet" tags="n.*"/>
    </remove>
    <or>
      <pattern lemma="nazi" tags="adj.*"/>
      <pattern lemma="totalitari" tags="adj.*"/>
      <pattern lemma="feixista" tags="adj.*"/>
      <pattern lemma="franquista" tags="adj.*"/>
      <pattern lemma="militar" tags="adj.*"/>
      <pattern lemma="fiscal" tags="adj.*"/>
    </or>
  </rule>

3

  <rule>
    <remove-from lemma="règim" tags="n.*">
      <translation lemma="diet" tags="n.*"/>
    </remove-from>
    <pattern>
      <or>
        <pattern-item lemma="nazi" tags="adj.*"/>
        <pattern-item lemma="totalitari" tags="adj.*"/>
        <pattern-item lemma="feixista" tags="adj.*"/>
        <pattern-item lemma="franquista" tags="adj.*"/>
        <pattern-item lemma="militar" tags="adj.*"/>
        <pattern-item lemma="fiscal" tags="adj.*"/>
      </or>
    </pattern>
  </rule>

  <rule c="la dona dels seus somnis">
    <select-for lemma="dona" tags="n.*">
      <translation lemma="wife" tags="n.*"/>
    </select>
    <pattern>
      <pattern-item lemma="de" tags="pr.*"/>
      <pattern-item lemma="*" tags="det.pos.*"/>
      <pattern-item lemma="somni" tags="n.*"/>
    </pattern>
  </rule>

4

  <rule>
    <target lemma="règim" tags="n.*">
      <remove lemma="diet" tags="n.*"/>
    </target>
…
  </rule>

  <rule c="la dona dels seus somnis">
    <target lemma="dona" tags="n.*">
      <select lemma="wife" tags="n.*"/>
    </target>
…
  </rule>

Text

s	("estació" n)	("season" n)	(1 "plujós")
s	("estació" n)	("season" n)	(2 "plujós")
s	("estació" n)	("season" n)	(1 "de") (3 "any")
s	("estació" n)	("station" n)	(1 "de") (3 "Línia")
s	("prova" n)	("evidence" n)	(1 "arqueològic")
s	("prova" n)	("test" n)	(1 "estadístic")
s	("prova" n)	("event" n)	(-3 "guanyador") (-2 "de") 
s	("prova" n)	("testing" n)	(-2 "tècnica") (-1 "de") 
s	("joc" n)	("game" n)	(1 "olímpic")
s	("joc" n)	("set" n)	(1 "de") (2 "caràcter")
r	("pista" n)	("hint" n)	(1 "més") (2 "llarg")
r	("pista" n)	("clue" n)	(1 "més") (2 "llarg")
r	("motiu" n)	("motif" n)	(-1 "aquest") (-2 "per")
s	("carn" n)	("flesh" n)	(1 "i") (2 "os")
s	("sobre" pr)	("over" n)	(-1 "victòria")
s       ("dona" n)      ("wife" n)      (-1 "*" det pos)
s       ("dona" n)      ("wife" n)      (-1 "el") (1 "de")
s       ("dona" n)      ("woman" n)     (1 "de") (2 "*" det pos) (3 "somni")
r       ("patró n)      ("pattern" n)   (1 "*" np ant)

Jacob's critique of the rule format

By 'skip' you actually means 'match'. And lemma selection should be called <select> :-)

So I'd write

<rule>  
  <match lemma="el"/>  
  <match lemma="dona" tags="n.*">  <select lemma="wife"/>  </match>
  <match lemma="de"/>
</rule>

and actually you would like to work on categories as well as lemmas.

Like, to prefer (human) beings and not things before "feel".

<rule>
  <match tags="n.*">  <select cat="beings"/>  </match>
  <match lemma="feel"/>
</rule>

--Jacob Nordfalk 12:22, 30 November 2011 (UTC)

I like this a lot actually!

  <rule>
    <match lemma="estació"> <select lemma="season"/></match>
    <match lemma="plujós" tags="adj.*"/>
  </rule>

It seems much more consistent... Would you allow every match to have a rule, or each rule to have more than one operation ? e.g.

  <rule>
    <match lemma="juego"> <select lemma="set"/></match>
    <match lemma="de"/>
    <match lemma="etiqueta"> <select lemma="tag"/></match>
  </rule>

- Francis Tyers 11:31, 1 December 2011 (UTC)

Old application strategy

The following is an inefficient implementation of the rule application process:

# s	("prova" n)	("event" n)	(-3 "guanyador") (-2 "de") 
#
# tipus = "select";
# centre = "^prova<n>.*"
# tl_patro = ["^event<n>.*"]
# sl_patro = {-3: "^guanyador<", -2: "^de<"}

CLASS Rule: 
        tipus = enum('select', 'remove')
        centre = '';
        tl_patro = [];
        sl_patro = {};


rule_table = {}; # e.g. rule_table["estació"] = [rule1, rule2, rule3];
i = 0

DEFINE ApplyRule(rule, lu): 
    

    FOREACH target IN lu.tl: 
        SWITCH rule.tipus:
            'select': 
                 IF target NOT IN rule.tl_patro:
                     DELETE target
            'remove': 
                 IF target IN rule.tl_patro:
                     DELETE target




FOREACH pair(sl, tl) IN sentence:
   
    FOREACH centre IN rule_table: 

        IF centre IN sl: 

            FOREACH rule IN rule_table[centre]: 

                matched = False   

                FOREACH context_item IN rule_table[centre][rule]: 

                  IF context_item in sentence: 
                      matched = True
                  ELSE:
                      matched = False
                
                # If all of the context items have matched, and none of them have not matched
                # if a rule matches break and continue to the pair. 
                IF matched == True:
 
                      sentence[i] = ApplyRule(rule_table[centre][rule], sentence[i])
                      break 

    i = i + 1