hello in clips i have this template: (deftemplate cell(slot x)(slot y)(slot alive)) and this fact : (start 1 1) then i have this claus in the LHS : ?start<-(start ?x ?y) and i want to get the variable ?a1 (cell (x (+ ?x 1) )(y ?y)(alive ?a1)) it seems that it's not allowed to add to the variable "(+ ?x 1)" so how can i achive what i wan...
To gain some experience, I am trying to make an expert system that can answer queries about the animal kingdom. However, I have run into a problem modeling the domain. I originally considered the animal kingdom hierarchy to be drawn like -animal -bird -carnivore -hawk -herbivore -bluejay -mammals -carnivores ...
Using PyClips, I'm trying to build rules in Clips that dynamically retrieve data from the Python interpreter. To do this, I register an external function as outlined in the manual. The code below is a toy example of the problem. I'm doing this because I have an application with a large corpus of data, in the form of a SQL database, whic...
How do you dereference a slot in a fact matched in the LHS of a rule? If a variable matches a fact, I can't find how to create further conditions that match slots within that fact. For example, in the code below, I want to print some text if there's a fact of the form "(do (action ?action))". However, ?action is itself a fact, and I ...
Is LISP or something like Jess the best choice? I'm interested in writing a program that makes a suggestion based on users' answers. Computational considerations are not really a factor this is pretty much a pattern matching engine. Also I would like to make an app for this and put it up on the web. UPDATE: I would like to put this u...
How do you test for fact existence in the RHS of rules in Clips? I'm trying to design a rule that will "score" the current state by counting how many goal facts exist. It's obvious how to test for facts in the LHS, but I can't find how to do the equivalent in the RHS. I want to do something like this, albeit this isn't valid Clips code:...
I'm finding it very difficult to develop with PyClips, because it appears to replace useful error messages thrown by Clips with a generic "syntax error" message. This makes debugging very laborious and practically impossible on large codebases when using PyClips. Consider the following example. I wrote a very large expression, which con...