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This page still pertains to UD version 1.

POS tags

Open class words Closed class words Other
ADJ ADP PUNCT
ADV AUX SYM
INTJ CONJ X
NOUN DET
PROPN NUM
VERB PART
PRON
SCONJ

ADJ: adjective

Definition

Adjectives are words that typically modify nouns and specify their properties or attributes. They may also function as predicates, as in

To auto je zelené.  “The car is green.”

The ADJ tag is intended for ordinary adjectives only. See DET for determiners and NUM for cardinal numerals.

In accord with the UD approach, adjectival ordinal numerals (první, sedmý, stopadesátý)  are tagged as adjectives, although the traditional grammar classifies them as numerals. They behave like adjectives both morphologically and syntactically, with the exception that they cannot be compared and negated.

Most Czech adjectives inflect for cs-feat/Gender (velký – velká – velké)  “big”, cs-feat/Number (velký – velcí),  cs-feat/Case (velký – velkého – velkému – velkém – velkým),  cs-feat/Degree (velký – větší – největší),  and Negation (velký – nevelký). 

Examples

Border cases

Passive participles lie on the border between verbs and adjectives. Core participial forms (ending in consonant or short vowel) are tagged VERB. Long forms are participial adjectives and they are tagged ADJ. For example:

Their meaning is almost identical but the usage slightly varies. Both groups can be used in nominal predication with copula. Only true participles (verbs) can be used to form the passive voice (but it may be sometimes difficult to distinguish from copula constructions, see AUX). On the other hand, the participial adjectives inflect for case and thus can modify nouns.

There is an analogy with some adjectives that preserved so called nominal (short) forms. And these adjectives are not derived from verbs. Example:

Here both groups are ADJ. The nominal forms are used in predication, the standard forms both in predication and to modify nouns.

References

edit ADJ

ADP: adposition

Definition

Czech has only prepositions but no postpositions or circumpositions. They occur before a complement noun phrase (noun, pronoun) and they form a single structure with the complement to express its grammatical and semantic relation to another unit within a clause.

Some prepositions take the form of fixed multiword expressions, e.g. na rozdíl od  “in contrast to”, v souvislosti s  “in connection with”. The component words are then still tagged according to their basic use (na  is ADP, rozdíl  is NOUN, etc.) and their status as multiword expressions are accounted for in the syntactic annotation.

Examples

References

edit ADP

ADV: adverb

Definition

Adverbs are words that typically modify verbs for such categories as time, place, direction or manner. They may also modify adjectives and other adverbs, as in velmi významně  “very significantly” or prokazatelně chybný  “provably wrong”.

There is a closed subclass of pronominal adverbs that refer to circumstances in context, rather than naming them directly; similarly to pronouns, these can be categorized as interrogative, relative, demonstrative etc. Pronominal adverbs also get the ADV part-of-speech tag but they are differentiated by additional features.

In accord with the UD approach, adverbial ordinal numerals (poprvé, posedmé, postopadesáté)  are tagged ADV, although the traditional grammar classifies them as numerals. The same holds for multiplicative numerals (jednou, sedmkrát, stopadesátkrát). 

Note that Czech transgressives (also called adverbial participles) are tagged VERB, not ADV.

Examples

References

edit ADV

AUX: auxiliary verb

Definition

The only truly auxiliary verb in Czech is být “to be”, and its variant (with separate lemma) bývat “to usually be”. It accompanies the lexical verb of a verb phrase and expresses grammatical distinctions not carried by the lexical verb.

Examples

Note that the verb být will not be tagged AUX if it is used as copula (Moje auto je nové. “My car is new.”) or as a content verb (V Praze je nové divadlo. “There is a new theatre in Prague.”) It will be tagged VERB in these cases. It is also possible that an auxiliary být modifies a lexical být (V Praze by bylo nové divadlo. “There would be a new theatre in Prague.”)

Note that the passive participle may be also used as nominal predicate with copula. Hence it may be difficult to distinguish a passive construction from a copula construction. The former focuses on the process while the latter emphasizes the result.

Czech modal verbs are not considered auxiliary and they are tagged VERB, in accord with the annotation in the Prague Dependency Treebank. Their behavior is only slightly different from other content verbs.

Constructions with mít and passive participle

There is a construction parallel to the perfect tenses of Germanic and Romance languages: mít “to have” + neuter singular passive participle, e.g. mít (něco) uděláno “to have (something) done”. They can also apply to intransitive verbs: mít vyhráno “to have won”. Sometimes the verb mít shares the subject (actor) with the participle, but in other contexts such relation is not guaranteed: mít (někde něco) napsáno “to have (something) written (somewhere)”. None of these constructions is considered a separate tense in the Czech grammar and the verb mít is not analyzed as auxiliary.

References

edit AUX

CONJ: coordinating conjunction

Definition

A coordinating conjunction is a word that links words or larger constituents without syntactically subordinating one to the other and expresses a semantic relationship between them.

For subordinating conjunctions, see SCONJ.

Examples

References

edit CONJ

DET: determiner

Definition

Determiners are words that modify nouns or noun phrases and express the reference of the noun phrase in context. That is, a determiner may indicate whether the noun is referring to a definite or indefinite element of a class, to a closer or more distant element, to an element belonging to a specified person or thing, to a particular number or quantity, etc.

An important point to note is that the traditional grammar of Czech does not define determiners as a separate word class. Czech does not have articles. Most determiners are traditionally called pronouns; that is, an UD-conformant annotation of Czech must distinguish between substantive pronouns (UD tag PRON) and attributive pronouns (UD tag DET).

Also note that the DET tag includes (pronominal) quantifiers (words like mnoho, málo  “many, few”), which the traditional grammar classifies as a special subclass of numerals. However, cardinal numerals in the narrow sense (jeden, pět, sto) are not tagged DET even though some authors would include them in quantifiers. Cardinal numbers have their own tag NUM.

Conversion from the Prague Dependency Treebank

Since the PDT tagset (like all other Czech tagsets) does not distinguish substantive and attributive pronouns, morphological tags alone are not enough to find the correct universal POS tag. Morphological rules could help, as the inflection patterns of some pronouns bear similarities to adjectival inflection; nevertheless, there will be other cases that cannot be solved this way. We have to examine the dependency tree. If a pronoun modifies a noun, it should be tagged DET. Otherwise it is PRON. As a result, all words that can be tagged DET can also be tagged PRON, but some words can only be tagged PRON. (We cannot recognize cases where the pronoun is in fact attributive, but the modified noun has been elided and is not represented in the tree.)

For instance, tohle  “this” is either pronoun (Tohle jsem viděl včera.  “I saw this yesterday.”) or determiner (Tohle auto jsem viděl včera.  “I saw this car yesterday.”)

Examples

References

edit DET

INTJ: interjection

Definition

An interjection is a word that is used most often as an exclamation or part of an exclamation. It typically expresses an emotional reaction, is not syntactically related to other accompanying expressions, and may include a combination of sounds not otherwise found in the language.

As a special case of interjections, we recognize feedback particles such as ano, jo, ne, etc. Note that these words are considered particles in the PDT tagset and have to be retagged during the conversion process.

Examples

(Note that no direct translation of interjections is possible. The approximate translations below are for orientation purposes and they cannot serve to judge the part of speech from the English perspective.)

Diffs

Prague Dependency Treebank

At present the UD-conversion of PDT keeps the PDT convention on tagging the response words (“yes, no”) as particles. Automatic conversion would not be straightforward because the negative particle ne is sometimes used as the response particle/interjection (English “no”) and sometimes as a free negative morpheme (English “not”). These two usages would have to be distinguished and only the first one converted to interjection.

References

edit INTJ

NOUN: noun

Definition

Nouns are a part of speech typically denoting a person, place, thing, animal or idea.

The NOUN tag is intended for common nouns only. See PROPN for proper nouns and PRON for pronouns.

Czech nouns have the lexical feature cs-feat/Gender. Furthermore, the nouns inflect for cs-feat/Number and cs-feat/Case.

A verbal noun can be derived productively from almost every verb (e.g. dělat  “to do” → dělání  “doing”). While in other languages a corresponding form may be called gerund and tagged VERB, in Czech it is tagged NOUN. It has always the neuter gender and the full number-case inflectional paradigm.

Examples

References

edit NOUN

NUM: numeral

Definition

A numeral is a word, functioning most typically as a determiner, adjective or pronoun, that expresses a number and a relation to the number, such as quantity, sequence, frequency or fraction.

Note that cardinal numerals are covered by NUM whether they are used as determiners or not (as in Windows 7) and whether they are expressed as words (čtyři), digits (4) or Roman numerals (IV).

Czech grammar distinguishes several subclasses of pronominal numerals (quantifiers): interrogative and relative (kolik  “how many”); demonstrative (tolik  “this many”); indefinite (několik, mnoho, málo  “several, many, few”). These words behave similarly to (most) cardinal numbers, e.g. they require that the counted noun phrase be in genitive. They are not similar to adjectives (unlike their English counterparts). However, in accord with the UD standard, they should be tagged DET, not NUM.

In addition, several types of (non-pronominal) numerals, such as ordinal numerals and multiplicative numerals, are tagged ADJ or ADV, based on their syntactic and morphological behavior.

Examples

Counterexamples

References

edit NUM

PART: particle

Definition

Particles are function words that must be associated with another word or phrase to impart meaning and that do not satisfy definitions of other universal parts of speech (e.g. adpositions, coordinating conjunctions, subordinating conjunctions or auxiliary verbs). Particles may encode grammatical categories such as negation, mood, tense etc. Czech particles are not inflected.

Note that response words such as ano, jo  “yes”, ne  “no”, etc. are considered particles in the PDT tagset but they should be retagged as interjections under the UD standard. Also note that ne  can be used in two ways, one would be translated as English “no” and the other as “not”. Only the former should become interjection, while the latter will stay a particle.

Examples

Diffs

Prague Dependency Treebank

References

edit PART

PRON: pronoun

Definition

Pronouns are words that substitute for nouns or noun phrases, whose meaning is recoverable from the linguistic or extralinguistic context.

Pronouns under this definition function like nouns. Note that Czech grammar traditionally extends the term pronoun to words that substitute for adjectives. Such words are not tagged PRON under our universal scheme. They are tagged as determiners in order to annotate the same thing same way across languages.

For instance, tohle  “this” is traditionally called pronoun in Czech grammar, regardless of context (the notion of determiners does not exist in Czech grammar). To make the annotation parallel across languages, it should be now tagged PRON in Tohle jsem viděl včera.  “I saw this yesterday.” and DET in Tohle auto jsem viděl včera.  “I saw this car yesterday.”

Examples

References

edit PRON

PROPN: proper noun

Definition

A proper noun is a noun that is the name of a specific individual, place, or object. Czech proper nouns are always written starting with an uppercase letter. Note that names of days of week (pondělí, úterý, středa, čtvrtek, pátek, sobota, neděle)  and names of months (leden, únor, březen, duben, květen, červen, červenec, srpen, září, říjen, listopad, prosinec)  are not written capitalized (unlike in English) and are not considered proper nouns.

Single-word named entities should be tagged PROPN even if they originate from a common noun (Zajíc, Huť)  or an adjective (Veselý, Teplá).  Even if they were originally adjectives and inflect according to adjectival paradigms, they behave syntactically as nouns. For instance, Teplá  (a river and city in western Bohemia) is originally feminine form of the adjective teplý  “warm” but as a geographical name, it is a noun. It denotes a concrete location (rather than a property of somebody/something) and its feminine gender is fixed (while adjectives have forms in all three genders).

Note that names of languages (čeština, angličtina) and adjectives derived from geographical names (český, anglický  “Czech, English”) are written in lowercase and are not tagged PROPN.

Personal names are typically treated as a sequence of proper nouns (one or more given names and one or more surnames). If the name contains prepositions, conjunctions or articles (foreign names and old Czech names), these are tagged as ADP, CONJ and DET, respectively.

Czech (and other Slavic) multi-word named entities have internal syntactic structure, which is preserved in the annotation. The headword is always noun and there may be other nouns involved. They will be tagged either PROPN or NOUN and possible ambiguities must be resolved individually. Modifying adjectives are never tagged PROPN. Even if an adjective is the first word of a multi-word name, and thus it starts with an uppercase letter, it is still tagged ADJ. Similarly, function words in named entities retain their normal tags. These rules are less strict for foreign named entities where the original part of speech is hidden for a Czech speaker.

Examples

Conversion from the Prague Dependency Treebank

The PDT set of morphological (part-of-speech) tags does not distinguish common and proper nouns. However, lemmas in PDT contain additional features that also encode types of named entities. When converting the PDT annotation to UD, these lemma features are removed, the PROPN tag is used and the feature cs-feat/NameType is added to the universal features to preserve the type. Only nouns are treated this way. Foreign adjectives are not converted to PROPN despite the fact that they entered Czech as parts of foreign names and their lemmas contain the name type feature.

The following table lists the name types together with the most frequent examples. See http://ufal.mff.cuni.cz/techrep/tr27.pdf, page 8, section 2.1 (Lemma structure) for more details.

_;Ygiven nameJan, Jiří, Václav, Petr, Josef“Jan, Jiří, Václav, Petr, Josef”
_;SsurnameKlaus, Havel, Němec, Jelcin, Svoboda“Klaus, Havel, Němec, Yeltsin, Svoboda”
_;Emember of a particular nation, inhabitant of a particular territoryNěmec, Čech, Srb, Američan, Slovák“German, Czech, Serbian, American, Slovak”
_;Ggeographical namePraha, ČR, Evropa, Německo, Brno“Prague, CR, Europe, Germany, Brno”
_;Kcompany, organization, institutionODS, OSN, Sparta, ODA, Slavia“ODS, UN, Sparta, ODA, Slavia”
_;RproductLN, Mercedes, Tatra, PC, MF“LN, Mercedes, Tatra, PC, MF”
_;mother proper name: names of mines, stadiums, guerilla bases etc.US, PVP, Prix, Rapaport, Tour“US, PVP, Prix, Rapaport, Tour”

Diffs

Prague Dependency Treebank

Articles in foreign names (the, die, le)  are tagged ADJ, not DET. Otherwise, the morphological analysis usually includes the original part of speech of foreign words.

References

edit PROPN

PUNCT: punctuation

Definition

Punctuation marks are non-alphabetical characters and character groups used to delimit linguistic units in printed text.

Punctuation is not taken to include logograms such as $, %, and §, which are instead tagged as SYM.

Examples

Diffs

Prague Dependency Treebank

The PDT texts are from the early 1990s and there are no e-mail addresses. If they were there, the PDT tokenization rules would break them up on all dots and at signs. The same holds for telephone numbers. For example, tel.: (05) 4321 6014  is analyzed as eight tokens (NOUN PUNCT PUNCT PUNCT NUM PUNCT NUM NUM).

References

edit PUNCT

SCONJ: subordinating conjunction

Definition

A subordinating conjunction is a conjunction that links constructions by making one of them a constituent of the other. The subordinating conjunction typically marks the incorporated constituent which has the status of a (subordinate) clause.

For coordinating conjunctions, see CONJ.

Examples

References

edit SCONJ

SYM: symbol

Definition

A symbol is a word-like entity that differs from ordinary words by form, function, or both.

Many symbols are or contain special non-alphanumeric characters, similarly to punctuation. What makes them different from punctuation is that they can be substituted by normal words. This involves all currency symbols, e.g. $ 75 is identical to seventy-five dollars.

Mathematical operators form another group of symbols.

Another group of symbols is emoticons and emoji.

Strings that consists entirely of alphanumeric characters are not symbols but they may be proper nouns: 130XE, DC10; others may be tagged PROPN (rather than SYM) even if they contain special characters: DC-10. Similarly, abbreviations for single words are not symbols but are assigned the part of speech of the full form. For example, Mr. (mister), kg (kilogram), km (kilometr), dr (doktor) should be tagged nouns. Acronyms for proper names such as OSN and NATO should be tagged as proper nouns.

Characters used as bullets in itemized lists (•, ‣) are not symbols, they are punctuation.

Examples

Diffs

Prague Dependency Treebank

The PDT part-of-speech tagset does not distinguish symbols from punctuation, hence all non-alphanumeric characters in the converted data are currently tagged PUNCT.

The PDT texts are from the early 1990s and there are no e-mail addresses. If they were there, the PDT tokenization rules would break them up on all dots and at signs. The same holds for telephone numbers. For example, tel.: (05) 4321 6014  is analyzed as eight tokens (NOUN PUNCT PUNCT PUNCT NUM PUNCT NUM NUM).

edit SYM

VERB: verb

Definition

A verb is a member of the syntactic class of words that typically signal events and actions, can constitute a minimal predicate in a clause, and govern the number and types of other constituents which may occur in the clause.

Note that the VERB tag covers main verbs (content verbs), modal verbs and copulas but it does not cover auxiliary verbs, for which there is the AUX tag. (Czech modal verbs are not considered auxiliary.) See the description of AUX for more information on the borderline between VERB and AUX.

Czech verbs can take the following morphological forms:

There are participial forms that are tagged as adjectives (ADJ) rather than verbs. See below for examples.

A verbal noun can be derived productively from almost every verb (e.g. dělat  “to do” → dělání  “doing”). While in other languages a corresponding form may be called gerund and tagged VERB, in Czech it is tagged NOUN. It has always the neuter cs-feat/Gender and it inflects for cs-feat/Number and cs-feat/Case.

Examples

Border cases

There are passive participles as verb forms (VERB) and participial adjectives (ADJ). For example:

Their meaning is almost identical but the usage slightly varies. Both groups can be used in nominal predication with copula. Only true participles (verbs) can be used to form the passive voice (but it may be sometimes difficult to distinguish from copula constructions, see AUX). On the other hand, the participial adjectives inflect for case and thus can modify nouns.

There is an analogy with some adjectives that preserved so called nominal (short) forms. And these adjectives are not derived from verbs. Example:

Here both groups are ADJ. The nominal forms are used in predication, the standard forms both in predication and to modify nouns.

References

edit VERB

X: other

Definition

The tag X is used for words that for some reason cannot be assigned a real part-of-speech category.

A special usage of X is for cases of code-switching where it is not possible (or meaningful) to analyze the intervening language grammatically (and where the dependency relation foreign is typically used in the syntactic analysis). This rarely applies to the PDT data where many foreign words are tagged with their original part of speech.

Even if foreign words are tagged X, this usage does not extend to ordinary loan words which should be assigned a normal part-of-speech. For example, in Skotové nosí kilt  “Scots wear kilts”, kilt is an ordinary NOUN.

Examples

edit X