3.015
Features:
* Added feature 'strength' because of UD corpora that use it (Romanian,
Gothic, Old Church Slavonic).
* Feature 'variant': added values 'a', 'b', 'c' (abbreviations in PDT-C).
Drivers:
* CS::Pdtc
* CS::Ridics
* LT::Jablonskis
* LT::Multext: Subjunctive mood changed to conditional, in order to make it
more parallel to other Lithuanian and Latvian corpora in UD.
* Changed mapping of Lithuanian non-finite verb forms:
* dalyvis (participle) = verb, participle
* padalyvis (same subject converb) = verb, gerund
* pusdalyvis (different subject converb) = verb, converb
* būdinys (adverbial participle of manner) = adverb, converb
3.014 2019-01-31 14:30:16+01:00 Europe/Prague
Drivers:
* LT::Multext: The sixth character of nouns is not adjform. It is probably
reflexivity.
* LT::Multext: The seventh character of adjectives, sixth of pronouns, seventh
of numerals and tenth of verbs is better characterized as definiteness,
although adjform is not exactly wrong.
* LT::Multext: The last character of verbs (participles only) is degree
of comparison.
3.013 2019-01-14 21:42:51+01:00 Europe/Prague
Features:
* Feature 'numform': added value 'combi' (combined digits + suffix).
Drivers:
* LT::Multext
3.012 2018-05-15 11:11:11+02:00 Europe/Prague
Interface:
* FS methods add_ufeatures() and get_ufeatures() now store unknown language-
specific features or values in the 'other' feature (and set tagset to
'mul::uposf').
3.011 2018-02-18 14:17:13+01:00 Europe/Prague
Features:
* Feature 'case': added values 'per' (perlative) and 'cns' (considerative).
Drivers:
* en::penn --> mul::upos conversion adjusted according to
https://github.com/UniversalDependencies/docs/issues/157
(verbal particles RP and alphanumeric list bullets LS)
3.010 2017-11-27 21:11:31+01:00 Europe/Prague
Drivers:
* pt::freeling should not encode "PA*" (pronoun-article) and "DR*" (relative
determiner)
3.009 2017-11-27 16:15:22+01:00 Europe/Prague
Fixes:
* A value encoded by Atom should be deterministic even if the
encoding map allows multiple paths.
3.008 2017-11-18 16:44:01+01:00 Europe/Prague
Features:
* Added feature 'clusivity' (inclusive vs. exclusive pronoun "we").
3.007 2017-10-25 18:03:12+02:00 Europe/Prague
3.006 2017-07-11 12:46:15+02:00 Europe/Prague
Features:
* Feature 'case': added values 'equ' and 'cmp', newly defined in UD v2.
* Feature 'degree': added value 'equ', newly defined in UD v2.
* Feature 'definite': added value 'spec', newly defined in UD v2.
* Feature 'number': added values 'count', 'tri', 'pauc', 'grpa', 'grpl' and
'inv', newly defined in UD v2.
* Feature 'mood': added values 'prp' and 'adm', newly defined in UD v2.
* Feature 'aspect': added values 'hab' and 'iter', newly defined in UD v2.
* Feature 'voice': added values 'antip', 'dir' and 'inv', newly defined in UD
v2.
* Feature 'person': added values '0' and '4', newly defined in UD v2.
* Feature 'tense': removed value 'nar'; in UD v2, it should be encoded as the
past tense + the non-firsthand evidentiality feature.
* Added feature 'evident', newly defined in UD v2.
Interface:
* Added the is_...() methods for the new feature values.
3.005 2017-07-08 22:05:24+02:00 Europe/Prague
Features:
* In line with Universal Dependencies, the single-value features' value is no
longer identical to the feature name; instead, it is 'yes'. For example,
'reflex=reflex' is substituted by 'reflex=yes'. The change involves features:
'reflex', 'poss', 'abbr', 'foreign', 'hyph', 'typo'.
3.004 2017-02-08 15:25:24+01:00 Europe/Prague
Features:
* In line with Universal Dependencies v2, added value 'vnoun' of feature
'verbform' (verbal noun). The value 'ger' is still available but slightly
deprecated (if something is traditionally called gerund but can be plausibly
called verbal noun, it should be labeled 'vnoun').
3.003 2017-01-18 07:27:27+01:00 Europe/Prague
Fixes:
* Reading (setting) old feature-value pairs politeness=inf|pol and converting
them internally to polite=infm|form.
3.002 2017-01-16 20:30:08+01:00 Europe/Prague
Features:
* In line with Universal Dependencies v2, value 'gen' of feature 'numtype'
(generic numeral) has been removed. The known examples should be either
'card' or 'mult'.
3.001 2017-01-16 13:42:21+01:00 Europe/Prague
Features:
* In line with Universal Dependencies v2, the feature 'foreign' has again just
one value. The values 'fscript' and 'tscript' had been used only in
el::conll. They are now preserved in the 'other' feature.
3.000 2017-01-15 11:04:26+01:00 Europe/Prague
Drivers:
* FO::Setur
* PT::Freeling
* UG::Udt
Features:
* New value 'aug' of feature 'degree': augmentative, opposite of diminutive.
Used for nouns in the Freeling tagset for Portuguese.
* Feature 'animateness' renamed to 'animacy'. Affected drivers:
xx::multext
cs::pdt
eu::conll
fa::conll
hsb::sorokin
nl::cgn
pl::ipipan
ru::syntagrus
sk::snk
ta::tamiltb
* Feature 'definiteness' renamed to 'definite'. Affected drivers:
xx::multext
ar::padt ar::conll ar::conll2007
bg::conll
da::conll
de::smor
el::conll
fo::setur
he::conll
hu::conll
it::conll
nl::cgn nl::conll
pt::conll pt::cintil
ro::rdt
sl::conll
sv::mamba sv::parole sv::suc
* Feature 'negativeness' renamed to 'polarity'. Affected drivers:
xx::multext
ar::padt ar::conll ar::conll2007
bg::conll
bn::conll
ca::conll2009
cs::pdt cs::ajka cs::pmk cs::pmkkr
de::stts de::smor
el::conll
et::puudepank
fi::turku
he::conll
hu::conll
ja::conll
mt::mlss
pl::ipipan
sk::snk
sl::conll
ta::tamiltb
tr::conll
zh::conll
* Feature 'politeness' renamed to 'polite'. Features 'abspoliteness',
'ergpoliteness' and 'datpoliteness' renamed similarly. Affected drivers:
ca::conll2009
cs::pmk
da::conll
eu::conll
hi::conll
ja::conll
nl::cgn
pt::freeling
ta::tamiltb
ur::conll
zh::conll
* Renamed and new feature values:
* abspolite=infm instead of abspolite=inf
* abspolite=form instead of abspolite=pol
* abspolite=elev
* abspolite=humb
* animacy=hum
* aspect=prosp instead of aspect=pro
* datpolite=infm instead of datpolite=inf
* datpolite=form instead of datpolite=pol
* datpolite=elev
* datpolite=humb
* definite=cons instead of definite=red
* ergpolite=infm instead of ergpolite=inf
* ergpolite=form instead of ergpolite=pol
* ergpolite=elev
* ergpolite=humb
* polite=infm instead of polite=inf
* polite=form instead of polite=pol
* polite=elev
* polite=humb
* verbform=conv instead of verbform=trans
Interface:
* Added new methods:
* is_construct() is true if definite=cons
* is_converb() is true if verbform=conv
* is_elevating() is true if polite=elev
* is_formal() is true if polite=form
* is_human() is true if animacy=hum
* is_humbling() is true if polite=humb
Fixes:
* MUL::Upos: the tag CONJ changed to CCONJ in Universal Dependencies v2.
The driver now reads both CONJ and CCONJ but writes only CCONJ.
2.052 2016-06-22 14:37:30+02:00 Europe/Prague
Drivers:
* HSB::Sorokin
Fixes:
* MUL::Google: now includes the tags AUX and PNOUN that were used in Universal
Dependency Treebanks v2.0.
* CA::Conll2009 (and derived ES::Conll2009) now convert numeral pronouns and
determiners to definite numerals, i.e. the 'prontype' feature is empty.
2.051 2016-02-12 22:00:32+01:00 Europe/Prague
Drivers:
* RO::Multext
Features:
* New value 'emp' of feature 'prontype': emphatic pronoun. There are
similarities with reflexive and demonstrative pronouns/determiners.
Example: "himself" as in "He himself did it." Czech "sám", Romanian "însuși".
Interface:
* Shifted semantics of pronoun-related is_*() methods of the FeatureStructure
class, added two new methods:
is_pronominal() is true if prontype is not empty. It includes pronouns,
determiners, quantifiers and pronominal adverbs. This is what the
is_pronoun() method did previously.
is_pronoun() is true if is_pronominal() && is_noun()
is_noun() therefore includes nouns and pronouns (does not check prontype)
is_determiner() is true if is_pronominal() && is_adjective()
is_adjective() therefore includes adjectives and determiners
is_article() is true if prontype values contain 'art'; it is assumed that the
pos is then 'adj' but it is not tested.
Fixes:
* EU::Conll: still used the deprecated feature 'subpos'.
* FeatureStructure->set_upos() should not reset non-empty prontype to 'prn'.
2.050 2015-09-30 21:09:39+02:00 Europe/Prague
Interface:
* The set() method of FeatureStructure now accepts feature values that had to
be renamed in the past: degree=comp and number=plu. When someone tries to set
these values, they will be translated to the new values before storing. Thus
they will not be returned by any of the get*() methods. No exception will be
thrown when setting feature values that were valid in the past. Hence
Interset should finally be backward-compatible with data stored in files.
Feature values that were never valid will still trigger an exception.
* Added over 70 new is_*() methods in FeatureStructure. Some feature values
have more than one method if there are two competing terms. Others still
do not have any method: either because the feature is marginal or because
the name is ambiguous.
2.049 2015-09-29 14:55:59+02:00 Europe/Prague
Features:
* Value 'comp' of feature 'degree' changed to 'cmp'.
This was actually a bug. Universal Features (in Universal Dependencies) define
this value as Cmp, not Comp. The divergence between UD and Interset existed
unnoticed for about a year.
2.048 2015-09-04 15:05:51+02:00 Europe/Prague
Drivers:
* LA::It
2.047 2015-08-29 18:19:17+02:00 Europe/Prague
Interface:
* FeatureStructure has a new serialization method as_string_conllx() that
returns feature-value pairs in a form suitable for the FEATS column of the
CoNLL-X file format.
* FeatureStructure has a new method get_nonempty_features(). It returns the
list of names of features whose values are not empty.
2.046 2015-08-25 16:49:06+02:00 Europe/Prague
Drivers:
* MT::Mlss
Fixes:
* PL::Ipipan: two new tags for abbreviations (see the Polish Treebank).
* FeatureStructure::add_ufeatures() treats unknown language-specific features
more correctly and does not trigger warnings any more.
2.045 2015-08-11 23:37:14+02:00 Europe/Prague
Fixes:
* PL::Ipipan: the 'conj' tag split to 'conj' and 'comp' (see the Polish Treebank).
2.044 2015-08-07 22:42:01+02:00 Europe/Prague
Drivers:
* SL::Multext
Fixes:
* FeatureStructure::get($feature) should never return undef.
It now returns the empty value instead.
2.043 2015-07-17 16:51:12+02:00 Europe/Prague
Interface:
* FeatureStructure has new methods to remove the value of a feature:
generic clear($feature) and specific for each feature, e.g. clear_pos().
Until now the only method was to set the empty value ('').
Fixes:
* Improved documentation of FeatureStructure::get_ufeatures() and add_ufeatures()
(these are methods, not static functions!)
2.042 2015-07-08 14:43:31+02:00 Europe/Prague
Drivers:
* LA::Itconll
Fixes:
* Fixed bug in get_ufeatures(): Foreign=Foreign (was mistakenly Foreign=Yes).
* Removed the FeatureStructure::is_valid() method. It is not needed since 2.019
when we disallowed setting unknown features or values.
2.041 2015-02-27 16:07:10+01:00 Europe/Prague
Drivers:
* ZH::Conll
2.040 2015-02-26 13:44:07+01:00 Europe/Prague
Drivers:
* TR::Conll
2.039 2015-02-24 15:54:15+01:00 Europe/Prague
Drivers:
* TA::Tamiltb
* TE::Conll
* UR::Conll
2.038 2015-02-23 08:06:54+01:00 Europe/Prague
Drivers:
* RO::Rdt
* RU::Syntagrus
* SK::Snk
* SL::Conll
2.037 2015-02-20 17:39:15+01:00 Europe/Prague
Drivers:
* PT::Conll
2.036 2015-02-13 12:42:55+01:00 Europe/Prague
Drivers:
* PL::Ipipan
2.035 2015-02-11 12:23:30+01:00 Europe/Prague
Drivers:
* NO::Conll
* NL::Cgn: added the old tag for adverbs, BW() (besides the new tag, BIJW()).
2.034 2015-02-10 22:27:41+01:00 Europe/Prague
Interface:
* FeatureStructure has new methods is_interrogative() and is_relative().
Features:
* New value 'dim' of the feature 'degree': diminutive. Applicable to multiple languages, systematically needed in Dutch.
* New feature 'position' for the position (usage) of Dutch adjectives.
Drivers:
* Fixed NL::Cgn. Extended list of tags; encoding now includes features.
2.033 2015-02-08 00:02:03+01:00 Europe/Prague
Interface:
* New class Lingua::Interset::Converter implements conversion between two physical tagsets including caching.
Drivers:
* NL::Conll
* NL::Cgn
2.032 2015-01-26 23:27:27+01:00 Europe/Prague
Interface:
* Fixed alphabetical ordering in FeatureStructure->get_ufeatures().
Drivers:
* Fixed MUL::Uposf. Decoding was incorrect for features that are named differently in UD and in Interset.
* SV::Mamba
* SV::Conll
* SV::Parole
* SV::Suc
2.031 2015-01-24 12:35:52+01:00 Europe/Prague
Interface:
* FeatureStructure has new method add_ufeatures() that performs the dual operation to get_ufeatures().
Features:
* New value 'gdv' of the feature 'verbform': Latin gerundive (as opposed to the gerund, verbform=ger).
Drivers:
* LA::Conll
2.030 2015-01-21 14:45:58+01:00 Europe/Prague
Features:
* New value 'light' of the feature 'verbtype': light/support verb in Japanese ("suru") and other languages.
Drivers:
* JA::Conll
2.029 2015-01-07 11:05:40+01:00 Europe/Prague
Fixes:
* Fixed several bugs in classification of numerals in Tagset::CS::Pdt.
2.028 2014-12-20 13:21:11+01:00 Europe/Prague
Drivers:
* IT::Conll
2.027 2014-12-10 22:34:10+01:00 Europe/Prague
Drivers:
* HU::Conll
Interface:
* FeatureStructure has new methods is_active() and is_passive().
2.026 2014-12-05 18:56:03+01:00 Europe/Prague
Drivers:
* HI::Conll
* DE::Smor
Interface:
* FeatureStructure has new method set_other_subfeature().
2.025 2014-11-24 17:43:29+01:00 Europe/Prague
Features:
* New value 'int' of the feature 'voice': intensive voice/aspect (the PIEL binyan) in Hebrew.
Drivers:
* HE::Conll
2.024 2014-11-21 17:24:35+01:00 Europe/Prague
Features:
* New value 'opt' of the feature 'mood': optative mood in Ancient Greek and Turkish, to express wishes:
"May you have a long life!" "If only I were rich!"
* New value 'des' of the feature 'mood': desiderative mood in Turkish: "He wants to come."
* New value 'nec' of the feature 'mood': necessitative mood in Turkish: "He must come. He should come."
* New value 'mid' of the feature 'voice': middle voice in Ancient Greek. (The mediopassive voice can be expressed as 'mid|pass'.)
* New value 'rcp' of the feature 'voice': reciprocal (Turkish "karıştı", "tutuştular")
* New value 'cau' of the feature 'voice': causative (Turkish "karıştırıyor" ("is confusing"))
Drivers:
* GRC::Conll
2.023 2014-11-21 10:44:50+01:00 Europe/Prague
Drivers:
* FI::Turku
2.022 2014-11-18 22:56:53+01:00 Europe/Prague
Features:
* New value 'exc' of the feature 'prontype': exclamative determiner or pronoun (e.g. "WHAT a surprise!")
Drivers:
* FA::Conll
2.021 2014-11-17 01:04:13+01:00 Europe/Prague
Features:
* New features for the multi-argument agreement of Basque synthetic verbs:
* absperson, absnumber, abspoliteness
* ergperson, ergnumber, ergpoliteness, erggender
* datperson, datnumber, datpoliteness, datgender
Drivers:
* ET::Puudepank
* EU::Conll
Interface:
* FeatureStructure has new methods is_masculine(), is_feminine(), is_neuter(), is_common_gender(),
is_negative(), is_affirmative(), is_auxiliary(), is_modal(), is_gerund(), is_conditional(),
is_cardinal(), is_ordinal(), is_personal_pronoun().
* New method Atom::merge_atoms() helps create a big atom to decode unnamed features.
2.020 2014-10-31 17:34:17+01:00 Europe/Prague
Features:
* Two new values of the feature 'foreign':
* 'fscript' = foreign word in foreign script
* 'tscript' = foreign word transcribed from a foreign script
Drivers:
* EL::Conll
2.019 2014-10-30 22:30:13+01:00 Europe/Prague
Interface:
* FeatureStructure::set($feature, $value) now dies if either the feature or the value is unknown.
* Default setters (e.g. set_gender()) now call set($feature, $value), so they can take multivalues
in all forms and referenced arrays (if any) are deeply copied, not shared.
* Default getters (e.g. gender()) now always return scalars. Multivalues are joined by vertical bars.
This is the same behavior as with the get_joined($feature) method.
* Exception: The 'other' feature can still contain anything (usually a hash reference)
and its getter ($fs->other()) will return exactly that anything, not necessarily a scalar.
2.018 2014-10-17 14:51:14+02:00 Europe/Prague
Drivers:
* PT::Cintil
Interface:
* FeatureStructure has new methods is_comparative() and is_superlative().
2.017 2014-10-13 16:07:59+02:00 Europe/Prague
Features:
* Value 'art' (article) moved from feature 'adjtype' to 'prontype'. Adjtype becomes deprecated.
* Value 'det' (determiner) of 'adjtype' removed. Determiners are now recognized by pos=adj + non-empty value of 'prontype'.
Interface:
* FeatureStructure has new method is_article().
2.016 2014-10-11 21:46:09+02:00 Europe/Prague
Features:
* Feature 'number', value 'plu' (plural) changed to 'plur' to reflect the Universal Dependencies / Features.
2.015 2014-10-10 18:23:36+02:00 Europe/Prague
Drivers:
* DE::Stts
* DE::Conll
* DE::Conll2009
* MUL::Uposf
Fixes:
* Fixed a bug in Atom::list(). Previously, tags were taken from encode but not from decode map.
* FeatureStructure has new method get_ufeatures() for the universal features.
2.014 2014-10-06 22:10:01+02:00 Europe/Prague
Drivers:
* MUL::Upos
Interface:
* FeatureStructure has new methods set_upos() and get_upos() for the universal POS tags.
2.013 2014-10-04 22:40:48+02:00 Europe/Prague
Drivers:
* DA::Conll
2.012 2014-09-29 17:43:18+02:00 Europe/Prague
Fixes:
* Lingua::Interset::find_drivers() no longer fails if a subfolder of an %INC path is not readable.
2.011 2014-09-23 22:40:14+02:00 Europe/Prague
Drivers:
* CA::Conll2009
* ES::Conll2009
2.010 2014-08-15 20:14:29+02:00 Europe/Prague
Interface:
* New importable functions in the main package: find_tagsets() and hash_drivers().
Drivers:
* BN::Conll
* MUL::Google
2.009 2014-08-11 17:20:03+02:00 Europe/Prague
Features:
* New feature 'morphpos' (it existed in Interset 1 for sk::snk but it did not make it to Interset 2 so far).
Drivers:
* JA::Ipadic
2.008 2014-08-01 11:14:23+02:00 Europe/Prague
Drivers:
* BG::Conll
2.007 2014-07-25 14:01:06+02:00 Europe/Prague
Drivers:
* AR::Padt
* AR::Conll
* AR::Conll2007
2.006 2014-07-18 15:50:40+02:00 Europe/Prague
Interface:
* New methods for the 'other' feature: get_other_subfeature() and is_other().
* Fixed treatment of the 'other' feature in atoms.
Drivers:
* CS::Pmk
* CS::Pmkkr
* HR::Multext
2.005 2014-07-11 17:10:37+02:00 Europe/Prague
Interface:
* FeatureStructure method merge_hash() renamed to merge_hash_hard() and added new method merge_hash_soft().
* Similarly, Atom method decode_and_merge() split to decode_and_merge_hard() and decode_and_merge_soft().
Features:
* New value of feature 'advtype': 'sta' (adverb of state, e.g. Czech "horko", "zima", "volno", "nanic").
Drivers:
* CS::Ajka
* CS::Cnk
2.004 2014-07-04 16:29:33+02:00 Europe/Prague
Interface:
* New attribute encode_default of class SimpleAtom.
Features:
* Three new values of feature 'style': 'rare' (rare), 'poet' (poetic), and 'expr' (expressive, emotional).
Drivers:
* CS::Multext
2.003 2014-06-27 23:23:33+02:00 Europe/Prague
Architecture:
* New classes Atom and SimpleAtom are special cases of Tagset driver, designed as sub-drivers for individual surface features.
Interface:
* FeatureStructure::multiset() renamed to add().
* Added various new is_...() methods in FeatureStructure.
* is_noun() and similar methods should now work also with arrays of values.
* The generic set() method of FeatureStructure will no longer allow multiple occurrences of the same value if multiple values are set.
* New method FeatureStructure::matches() (for those familar with Treex: this is the $node->match_iset() method).
Feature changes:
* New numtype 'sets' for number of sets of things (Czech "čtvery boty" = "four pairs of shoes").
* New conjtype 'oper' for mathematical operators (Czech "krát" = "times").
* New feature 'nametype' for classification of named entities, used in the Czech CoNLL tagsets.
Drivers:
* EN::Penn – the -ing verb forms (VBG) now set the progressive aspect, instead of imperfect.
* CS::Pdt
* CS::Conll
* CS::Conll2009
2.002 2014-06-20 17:49:14+02:00 Europe/Prague
Architecture change:
* Tagset drivers moved one level down so that we can clearly distinguish them from other modules.
Lingua::Interset::EN::Penn became Lingua::Interset::Tagset::EN::Penn.
Feature changes:
* pos value 'prep' (preposition) renamed to 'adp' (adposition).
* the remaining values of the subpos feature dissolved into advtype and two
new features, adpostype and parttype.
Drivers:
* EN::Penn – fixed bug in decoding of VBP.
* EN::Conll
* EN::Conll2009
(Both are trivially derived from EN::Penn.)
Interface:
* Various tools for driver testing
* Empty implementations of decode(), encode() and list() in the Tagset class will now throw an exception if called.
* Slightly changed semantics of the set...() and get...() methods in the FeatureStructure class.
Improved documentation of the modules.
2.001 2014-06-13 17:56:05+02:00 Europe/Prague
Complete rewrite of Interset. The old Perl interface was not object-oriented.
The modules resided under the “tagset” namespace (yes, all lowercase). The new
modules are object-oriented (using Moose) and the new namespace is Lingua::
Interset. And it is available at the CPAN.
There are the following modules:
* Lingua::Interset
* Lingua::Interset::FeatureStructure
* Lingua::Interset::Tagset
* Lingua::Interset::OldTagsetDriver
* Lingua::Interset::Trie
Drivers:
* Initially, only the 'en::penn' driver has been ported to Interset 2 (see the
module Lingua::Interset::EN::Penn). The other drivers will be ported
gradually. In the meantime, the old implementations (tagset::*) can be
accessed through a wrapper class, Lingua::Interset::OldTagsetDriver.
(The wrapper is shipped together with Interset 2 but the old drivers are not.
They are still downloadable from the Interset wiki.)
Feature changes:
* Several new features were split from the subpos feature: nountype, adjtype,
verbtype and conjtype. This is a logical extension of the previously created
prontype, advtype etc.
* The features tense and subtense have been merged. Their separation in the
early years of Interset was driven by problems with encoding tagsets that
lacked specialized tenses; later on however, Interset got the algorithms for
strict encoding and feature replacement. Now there are other features whose
values form a hierarchy, so it seems logical to treat tenses the same way.
-------------------------------------------------------------------------------
Interset 2 (above) is distributed through the CPAN as Lingua::Interset and its
versions are tracked rigorously. Versions < 2 vere numbered less rigorously and
there were fewer official releases. (Though internally, I was using Subversion
since fall 2007 to spring 2014, and there are SVN revision numbers.)
As many other projects, Interset has gone through its “Dark Age” when it was
not yet clear whether it would eventually be published. There was no
distinction between versions and releases, and versions were not numbered
anyway. However, there were some milestones, which are described below and
which I have numbered for convenience.
1.2
27 June 2011. New drivers: Prague Spoken Corpus (Pražský mluvený korpus, PMK)
long and short tags (cs::pmkdl and cs::pmkkr). Arabic CoNLL 2007 slightly
differs from CoNLL 2006, so there is now ar::conll2007.
New test: For all tags in all drivers now must hold that deleting the value of
the other feature does not lead to an unknown tag. This should greatly improve
chances of finding permitted feature combinations when converting from one
tagset to another.
New usage: Interset in Treex (TectoMT).
1.1
8 September 2009. Three new incarnations of Czech, English and German CoNLL
tagsets, reflecting the 2009 changes in format. Most interestingly, German
tags now contain morphosyntactic features. Thanks to Saša Rosen, who tries to
use DZ Interset together with a multi-language parallel corpus called
Intercorp, we also created a driver for the IPI PAN Polish corpus, which in
turn caused one systemic change: o-tags (those setting the other feature) can
now be ignored when the driver is scanning the possible feature-value
combinations. And there is a new web interface to DZ Interset.
1.0
February 2009. Petr Pořízka and Markus Schäfer used DZ Interset in MorphCon, a
GUI tool for conversion of Czech morphological tags. They wrote a driver for
the Czech ajka tagset (a morphological analyzer from Masaryk University, Brno).
MorphCon has been presented at a bohemistic conference in Brno (see
References). Dan added a driver for the Czech tags of the Multext East
multilingual corpus.
Various maintenance changes took place, too. Version control has been migrated
to network-accessible (though not publicly accessible) SVN repository, together
with Trac project management interface. Website now includes information on
licensing, references and this version history. From now on, I intend to
distinguish revisions from numbered releases.
0.5
May 2008. DZ Interset was first presented at the Language Resoruces and
Evaluation Conference (LREC) in Marrakech, Morocco (see References). At that
time, new drivers for the German Stuttgart-Tübingen Tagset and the Portuguese
Floresta/CoNLL tagset (extremly noisy, huh!) were present.
At the time around LREC, a major change in the feature pool started to
crystallize. The diametrically different approaches to tagging of pronouns and
determiners led me to remove these categories from the top-level part-of-speech
set and transform them to special cases of nouns and adjectives. Such approach
had already been taken a year before for Bulgarian but now I wanted to unify it
across languages. In the end of 2008, all drivers already reflected the changed
policy. The state of pronouns may further change in future, as this is a rather
controversial issue. On the other hand, a similar change may be needed for
numerals, too.
0.2
Spring 2007. I struggled to convert tagsets of several CoNLL shared task
treebanks in order to improve the accuracy of a parser that relied on
understanding the information in the tags. It became apparent how big the
differences between various tagging approaches are. Also, some corpora
contained tags that were noisy or not very well defined. Arabic, Bulgarian,
Chinese, Czech and English CoNLL tagsets were added (Czech and English are just
reformatted PDT and Penn tags, respectively).
0.1
Summer 2006. My first unified approach to conversions among the Prague
Dependency Treebank tagset, Penn TreeBank tagset, Swedish Mamba tagset (CoNLL
2006 treebank), Danish Parole tagset (CoNLL 2006 treebank), and the tagset of
the Swedish adaptation of Jan Hajič's tagger. Tag conversions were crucial part
of my experiments with cross-language parser adaptation (see References). My
thanks go to Philip Resnik for the early comments during our discussions at the
University of Maryland.