pukWaC: ukWaC English corpus parsed with MaltParser
The pukWaC is a 40-million-word subset of the British English corpus ukWaC collected from the .uk domain with using medium-frequency words from the British National Corpus as seed words. In addition to the ukWaC corpus, the pukWaC corpus contains the syntax dependency annotation which shows the dependency between units in one sentence, i.e. which word depends which. This type of parsing was performed with the MaltParser.
The following syntactic classes are used in the word sketch feature to name particular relations, e.g. word sketch for the noun “name” gives 7 different relations, one of them is NMOD to mark modifiers of “name”: domain name, your name.
The syntactic classes can be displayed via View options in the Concordance tool by checking out “dependency relation” attribute.
Syntactic classes (word sketch relations)
| ADV | Unclassified adverbial |
| AMOD | Modifier of adjective or adverb |
| CC | Conjunction |
| COORD | Coordination |
| DEP | Unclassified relation |
| EXP | Expletive (a word in a sentence that is not needed to express the basic meaning of the sentence) |
| IOBJ | Indirect object |
| LGS | Logical subject |
| NMOD | Modifier of nominal |
| OBJ | Direct object or clause complement |
| PMOD | Between preposition and its child in a PP |
| P | Punctuation |
| PRD | Predicative complement |
| PRN | Parenthetical |
| PRT | Particle |
| SBJ | Subject |
| VC | Verb chain |
| VMOD | Modifier of verb |
Example of a sentence from vertical file
| token | lempos | tag | index | dependent position | dependency relation |
| Vince | Vince-n | NP | 1 | 21 | DEP |
| Hilaire | Hilaire-n | NP | 2 | 15 | VMOD |
| , | ,-x | , | 3 | 15 | P |
| one | one-x | CD | 4 | 15 | SBJ |
| of | of-i | IN | 5 | 4 | NMOD |
| the | the-x | DT | 6 | 10 | NMOD |
| first | first-j | JJ | 7 | 10 | NMOD |
| established | established-j | JJ | 8 | 10 | NMOD |
| black | black-j | JJ | 9 | 10 | NMOD |
| players | player-n | NNS | 10 | 5 | PMOD |
| in | in-i | IN | 11 | 10 | ADV |
| English | English-j | JJ | 12 | 13 | NMOD |
| football | football-n | NN | 13 | 11 | PMOD |
| , | ,-x | , | 14 | 4 | P |
| has | have-v | VHZ | 15 | 0 | ROOT |
| seen | see-v | VVN | 16 | 15 | VC |
| it | it-d | PP | 17 | 19 | NMOD |
| several | several-j | JJ | 18 | 19 | NMOD |
| times | time-n | NNS | 19 | 16 | OBJ |
| over | over-i | IN | 20 | 16 | ADV |
| . | .-x | SENT | 21 | 0 | ROOT |
Source: Johansson, Richard. “Dependency syntax in the conll shared task 2008.”
See also: Building sketches from parsed corpora
Part-of-speech tagset
The pukWaC corpus was tagged by TreeTagger using Penn TreeBank tagset.
Tools to work with the pukWaC corpus
A complete set of tools is available to work with this English corpus to generate:
- word sketch – English collocations categorized by grammatical relations
- thesaurus – synonyms and similar words for every word
- word lists – lists of English nouns, verbs, adjectives etc. organized by frequency
- n-grams – frequency list of multi-word units
- concordance – examples in context
- keywords– terminology extraction of one-word and multi-word units
- text type analysis – statistics of metadata in the corpus
Bibliography
Johansson, R. (2008). Dependency syntax in the CoNLL shared task 2008.
Search this English corpus
Sketch Engine offers a range of tools to work with this British English corpus from the ukWaC corpus.
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