RE: [Corpora-List] Subcat Questions

From: peetm (peet.morris@comlab.ox.ac.uk)
Date: Wed Jun 18 2003 - 20:19:14 MET DST

  • Next message: Ute Röme: "Re: [Corpora-List] Subcat Questions"

    Just want to say a MASSIVE and heartfelt 'thanks' to everyone that responded
    to my plea earlier today! You guys/gals/profs/... are just so helpful (fab
    even!) - thank you very very much indeed. I can now make some progress!

    Just wish you were all a little happier about signing up to our 'CL Forums'
    on www.clg.ox.ac.uk (we really don't bite) - makes asking/chatting/learning
    via majordomo look, um, a little outdated (in my humble opinion anyway).

    Thanks again,

    peetm

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    -----Original Message-----
    From: owner-corpora@lists.uib.no [mailto:owner-corpora@lists.uib.no] On
    Behalf Of Chris Brew
    Sent: 18 June 2003 17:59
    To: peetm
    Cc: corpora@uib.no
    Subject: Re: [Corpora-List] Subcat Questions

    On Wed, Jun 18, 2003 at 03:19:06PM +0100, peetm wrote:
    >
    > Sorry, if this would have been better asked elsewhere - but I thought I'd
    > give it a go here.
    >
    > Subcategorisation Frames - can anyone point me a 'The Dummy's Guide to' -
    or
    > provide an explanation of them, which contains only plain and simple
    English
    > please?
    >

    OK I'll try. If this is too simple, sorry. If too complex,
    ask. Subcategorization frames are a component of a system of ideas
    designed to describe verbs in such a way as to bring out interesting
    commonalities. They are based on notions such as
    transitive/intransitive that you may have been taught at school, but
    go further.

    1) Some verbs must (or nearly must) be intransitive

    John faints

    we might say the subcategorization frame for this is

    np _

    where np means noun phrase. The np is the only thing
    needed to fill in all the crucial roles of the event
    of fainting. In predicate calculus one might write

    faints(john)

    2) Other verbs must (or nearly must) be transitive

    John likes pizza
    (The old men) like (the dark green trees)

    the brackets mark the phrases. Linguists
    have decided for independent reasons that the
    phrases "the old men" "the dark green trees" can
    function in the same way as the individual words
    "John" and "pizza". If this is news to you, you
    probably want to read the first chapter of a good
    introduction to linguistics.

    the frame for both "likes" sentences would be

    np _ np

    If you say just "John likes" it feels as if something
    has been left out. So there are two obligatory things (complements)
    that
    needed to be added to complete "likes". In predicate
    calculus one might write

    likes(john, pizza)

    3) Some verbs can be either transitive or intransitive

    John moves

    np _

    John moves the books

    np _ pp

    3) Some verbs are yet more complicated

    John gives Mary (the books)
    np _ np np

    John gives (the books) (to Mary)

    np _ np pp

    (here pp is prepositional phrase, another kind of phrase,
    since "to" is a preposition)

    John promises Mary (the books)
    np _ np np

    John promises Mary (that he will return the books)
    np _ np s

    (Here s stands for sentence. Quite why "that he will
    return the books" should be a sentence is beyond the
    current scope, but this is broadly accepted)

    4) There don't seem to be frames with more than four
    elements, and the only common one with that many is

    John bet Mary (half a crown) (that he would return the books)

    np _ np np s

    5) Arguments and adjuncts.
    For purposes of counting, we don't include things that
    are inessential to the meaning of the verb, so

    John likes pizza (on Tuesdays)

    is given the frame

    np _ np

    and nobody worries about the "on Tuesdays". The reason is (loosely)
    that "on Tuesdays" could be added to almost any sentence, and so
    shouldn't count as part of the description of the verb. Things that
    are part of the frame get called "arguments" and things that are not
    get called "adjuncts". There is much debate about this distinction,
    from discussion of whether a particular thing is better analysed as
    argument or adjunct, through studies of whether machines (or indeed
    humans) can reliably distinguish arguments from adjuncts to
    philosophical diatribes on whether such a distinction is meaningful in
    the first place. If this part strikes you as flaky, you're in very
    good company. To really understand the motivations behind this you
    probably need a whole course in linguistics.



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