Christmas Word Search
DMCommunity.org offered a relatively simple challenge "Christmas Word Search" for holidays. My first inclination was to ask an LLM to solve it. I certainly was impressed that…
Topic
DMCommunity Challenge
13 posts
Integrating Rule Engine and Constraint Solver
OpenRules Rule Solver is an open-source tool that adds the power of Constraint and Linear Programming to Business Decision Modeling. It extends OpenRules Decision Manager to…
Solutions for Challenge “Soldier Payment Rules”
The DMCommunity’s Aug-2023 Challenge brought serious discussions at LinkedIn about the integrated use of SQL and Rule Engines. Instead of making generic statements about which…
Solving DMCommunity Challenge “Coins”
This weekend I tried to play with the latest DMCommunity Challenge that asks: "Suppose you need to pay 1 Euro. In how many different ways you can do it via 1c, 2c, 5c, 10c, 20c,…
Rules as Preferences (Miss Manners Advanced)
DMCommunity Challenge July-2023 deals with a rules-based decisioning problem when not all rules can be satisfied and thus should be considered as preferences. It offers an…
Declarative Decision Model “Flight Rebooking”
Rule Solver can be used to build a real declarative decision model for one of the most complex decision modeling challenges “Flight Rebooking” offered by DMCommunity.org: "A…
Declarative Decision Model “Miss Manners”
This problem used to be one of the popular benchmarks for rule engines 20 years ago. And now DMCommunity.org brings it back to see how modern decision engines can represent and…
Decision Model “Permit Eligibility”
In this post we describe an OpenRules decision model that addresses DMCommunity.org Mar-2023 Challenge “Permit Eligibility”. The Challenge asks to implement this rule: “An…
Christmas Model in JavaSolver
DMCommunity.org offered the Dec-2022 Challenge "Christmas Model" created with ChatGPT. This nice model defines a set of people, a set of gifts, the happiness level, and costs of…
Using Templates to Create Domain-Specific Decision Tables
While DMN-like decision tables are powerful enough to represent business logic for many practical problems, in the real world our customers frequently define new types of decision…
Solution for DMCommunity Challenge “Pay-As-You-Go Pricing Rules”
There are already 3 solutions to DMCommunity May-2020 Challenge. I especially like how Carol-Ann Berlioz created her solution using a test-driven approach when test cases prompt…
Building a Live Worker Scheduler
There are already several good responses to the DMCommunity’s April-2020 Challenge “Doctor Planning”. Below I am describing how I tried to use this challenge to create a complete…