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For example, a query (RX y) where yis known and X is an unknown, called a logic variable, finds values X where X and yare related by R. In other words, given Rand fdefined as before, the query finds inputs X to fsuch that (fX) = y. Unlike a function, a miniKanren relation makes no distinction between its inputs and outputs, leading to a variety of fascinating behaviors. For example, an interpreter written as a relation can also perform code synthesis, symbolic execution, and many other tasks. These examples demonstrate miniKanren’s potential and versatility as a platform or substrate for experimenting on executable program specifications.

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It’s designed to be lightweight and embedable in other host languages. There is a paper about a minimal implementation call MicroKanren that has spawned many derivatives. 2015-12-07 Cameron Swords on the long road to the Ph.D. In a previous post, I mentioned a rough idea to allow users to perform guided search in miniKanren.As part of my qualifying examination with Dan Friedman, I rewrote the deep structural segments of miniKanren to allow users to do exactly that!

MuKanren, like original miniKanren implementation, provides 3 operations: equals function unifies two terms, analogue for == operator in original miniKanren Scheme implementation.

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several examples, searching for a suitable generalization of the problem under such as mini-kanren (from The Reasoned Schemer [19]) to unify the  Apr 6, 2015 of the examples in The Reasoned Schemer. https://github.com/spariev/ mini_kanren require 'mini_kanren' include MiniKanren::Extras result  Feb 20, 2013 It's apparently an implementation of miniKanren in I like the metaphor he uses in that post; he also has some great examples, and he  Mar 20, 2017 interesting examples of relational programming using miniKanren.

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Jan 17, 2013 David Nolen's popular core.logic library is based on miniKanren, a relational ( logic) language embedded in Scheme.

I installed the "faster-minikanren" package, but the first examples of the This demonstration barely even scratches the surface of what’s possible using miniKanren and relational programming for graph manipulation and symbolic statistical model optimization. As the symbolic-pymc project advances, we’ll cover examples in which miniKanren’s more distinct offerings are demonstrated.
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miniKanren Overview This section is divided into two parts.

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International Conference on Functional Programming 2017 - Podtail

Part one introduces the three miniKanren operators and demonstrates their be-havior. Part two defines several arithmetic relations that are used in later examples, and allows the reader to become fa … Examples. kanren enables one to express sophisticated relations—in the form of goals—and generate values that satisfy the relations.

International Conference on Functional Programming 2017 - Podtail

Keywords miniKanren,relationalprogramming,logicpro-gramming, Scheme 1. Introduction miniKanren is the principal member of an eponymous fam-ily of relational (logic) programming languages. Many of its critical design decisions are a reaction to those of Prolog … The above examples use `eq`, a *goal constructor* to state that two expressions are equal. Other goal constructors exist such as `membero(item, coll)` which states that `item` is a member of `coll`, a collection.

The core language, using Scheme as the host language, is described in this short, interactive tutorial. An example of miniKanren code is evalo, a relational goal that relates expressions to the values that they evaluate to. When evalo is called in miniKanren like so: (evalo q q), it will generate quines, that is, expressions q that when run will evaluate to themselves. Core miniKanren. Core miniKanren extends Scheme with three operations: ==, fresh, and conde. There is also run, which serves as an interface between Scheme and miniKanren, and whose value is a list.