I’ve been reading a bit about Terry Winograd’s SHRDLU program and found this note:
[ Henrik Prebensen ] ([email@example.com](mailto: firstname.lastname@example.org)) wrote [Blockhead], a SHRDLU-like program written in Turbo Prolog with a graphical interface and documented in the book “The Advanced User’s Guide to Turbo Prolog”. Rudimentary blocks world programs are a common demo of natural language programming in Prolog, such as this code included in POPLOG.
Unfortunately, the link to Blockhead has rotted away and I can’t find anything about it online. I was wondering if anyone can point me either to Blockhead or a similar piece of software mimicking or re-implementing SHRDLU’s functionality in Prolog.
I’m primarily interested in SHRDLU’s natural language parser. I had a look at Terry Winograd’s thesis and a companion document that lays out the structure of the grammar in flowcharts. It might be possible to re-implement the original parser from these flowcharts (as indeed some people have done in the past) but that’s a long-ish term project and my immediate purposes would be better served by an existing implementation that can run in Swi-Prolog with a bit of modification (or more). I’d be grateful if anyone knows of anything like that (and would be willing to tell me about it).