[HPSG-L] relation between Formal Grammar of Human Language and CFG

[Roussanka Loukanova]

Thanks Stefan,

It seems to me that my own view is in the same line of your explanations,
about HPSGians.

As I recall, I wrote some details about that topic, from math foundations
of CBLG, esp. HPSG, in a paper at Fundamenta Informaticae:
https://doi.org/10.3233/FI-2017-1524

I have to return to the topic. Your explanations and references, and any
other incoming, are valuable to me.

Best Regards,
Roussanka


On Fri, 5 Aug 2022 at 17:11, Stefan Müller <St.Mueller at hu-berlin.de> wrote:

> Dear Roussanka,
>
> The general insight from the eightees was that human language is not
> context free. Some people call it mildly context-sensitive. Since GPSG
> was constructed to be context free, people were looking for something
> more powerful and abandoned it in favoure of GPSG. This taken together
> with a more lexical view resulted in HPSG, which has exactly the right
> generative capacity: It has Turing power. =:-)
>
> While CCG and TAG people will tell you that this is way too powerful,
> HPSGians usually have a different view. The formalism should not be
> constraining but the theory formulated within the formalism has to be as
> restrictive as possible. Carl Pollard argued for this in a paper.
>
> The whole discussion and references can be found in the HPSG handbook
> and in my Grammar Theory textbook. I have a (brief) chapter on
> generative power (Chapter 17):
>
> https://langsci-press.org/catalog/book/259
>
> https://langsci-press.org/catalog/book/287
>
> Geoff Pullum has a good paper on the history of the discussion. All
> referenced from with in the book.
>
> Best
>
>      Stefan
>
>
> Am 05.08.22 um 14:24 schrieb Roussanka Loukanova:
> > Dear All,
> >
> > What is the verdict on the relations between Formal Grammar of Human
> > Language and Context-Free Grammar (CFG) of Chomsky hierarchy on formal
> > grammars and languages?
> >
> > I would appreciate very much, opinions, points to research and,
> especially,
> > bibliographical references.
> >
> > Best Regards,
> > Roussanka
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