Posts Tagged ‘ Computer Science ’
Petri Nets are extremely powerful and expressive, but they are not as widely used as state machines. That's a pity, they allow us to solve problems beyond the reach of state machines. This post is the first in a mini-series on software development with Petri Nets. All of the code for a full feature-complete Petri Net library is available online at on GitHub. You're welcome to take a copy, play with it and use it in your own projects[ READ MORE ]
This is the second in a series on the basics of functional programming using C#. My topic today is one I touched on last time, when I described the rights and privileges of a function as a first class citizen. I'm going to explore Higher-Order Functions this time. Higher-Order Functions are functions that themselves take or return functions. Meta-functions, if you like[ READ MORE ]
The future of search lies in finding ways to bypass search engines altogether. Where information exists locally to make sense of what you’re after it’ll be used to create better searches. Data mining will be used to form a picture of what results go together, and what meanings a user attaches to a word. Alternative, [ READ MORE ]
Andrew Cantos raised some interesting philosophical points in reply to my partially tongue in cheek post The Great Domain Model Debate – Solved the other day. As ever, my short reply turned into a blog post and this is it. Andrew’s point was that there is a metaphorical link between objects in a domain model [ READ MORE ]
When I started implementing the SPARQL support in LINQ to RDF, I decided that I needed to implement as much of the standard query operators as possible. SPARQL is a very rich query language that bears a passing syntactical resemblance to SQL. It didn’t seem unreasonable to expect most of the operators of LINQ to [ READ MORE ]
As promised last time, I have extended the query mechanism of my little application with a LINQ Query Provider. I based my initial design on the method published by Bart De Smet, but have extended that framework, cleaned it up and tied it in with the original object deserialiser for SemWeb (a semantic web library [ READ MORE ]
Last time I hurriedly showed you how you can perform the next step of converting a triple store into an ORM system of sorts. The purpose of all this activity, and the reason I left off blogging about LINQ was that I am working on a system to allow me to use LINQ with a [ READ MORE ]
I’ve been off the air for a week or two – I’ve been hard at work on the final stages of a project at work that will go live next week. I’ve been on this project for almost 6 months now, and next week I’ll get a well earned rest. What that means is I [ READ MORE ]
This article follows on from the previous post about semantic web applications in C#. I’ll be using the SemWeb framework again, but this time I chose to demonstrate the capabilities of RDF by producing a simple MP3 file manager. I haven’t completed it yet, and I’ll be working on that over the next few days [ READ MORE ]
The latest update of the SemWeb library from Josh Tauberer includes a C# implementation of the Euler reasoner. This reasoner is able to go beyond simplistic RDFS reasoning – being able to navigate the class and property relationships – to make use of rules. The ontology I’ve been using to get used to coding in [ READ MORE ]
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