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I am always on the lookout for a good Knowledge Representation (KR) system that facilitates modeling and reasoning about real-world knowledge. I have experience with KnowledgeWorks available in LispWorks since I have used it in a few projects. I have also taken a cursory look at PowerLoom and Racer. Last week, I came across Flora-2 and its commercial counterpart ErgoAI from […]
Calling a function (or function object) dynamically, through a pointer known at runtime, is a common programming scenario. Almost all languages support this use case. Lisp, for example, has apply and funcall. When using apply, you can see that the arguments are passed via a separate list object. With funcall, however, the arguments are passed […]
In the last post, I outlined an approach to convert a dependency graph (the result of dependency parsing) to RDF. The particular RDF format I used is Turtle, which is widely supported. Today, I would like to show how to load this RDF data in a Semantic Graph database and make queries on it. There […]
Dependency parsing is widely used these days, and many NLP tools give a dependency graph as the parsed representation of the input text. See for example, SpacY and TextRazor. The following is the dependency tree corresponding to the sentence Mary is drinking cold water: The above tree was generated using SpacY. You can see that […]
Recently I came across a nice Lisp-based Monadic Parser Combinator library written by Massung. Unlike the traditional parser generators such as ANTLR, this library allows us to embed the parser in Lisp. Similar libraries are available for other languages too (see, for example ParsecJ for Java). The original idea of Monadic parser is from Haskell’s Parsec […]
In my previous post, I showed how to build a C-based Windows DLL to execute Prolog predicates in the Sicstus Prolog engine. Today, I want to show how to build an executable (on Windows) from a C/C++ program that uses Sicstus prolog engine. The process is quite simple. In order to make things interesting, I am […]
Last week I upgraded to the latest version (4.4.1) of Sicstus Prolog for Windows. Since the Prolog engine can be embedded (royalty free) in other applications, it is useful to understand how to create a DLL (on Windows) for this purpose. In today’s article, I would like to outline this process in sufficient detail because I found […]
Title: Design Patterns in Modern C++ – Reusable Approaches for Object-Oriented Software Design Author: Dmitri Nesteruk Publisher: Apress Year: 2018 Luck has been on my side for the past few weeks; I have been getting access to nice books to read. I wrote about The Modern C++ Challenge in my last post. Today, I am going […]
Title: The Modern C++ Challenge Author: Marius Bancilla Publisher: Packt Publishing Year: May 2018 This week I have been going through a new book titled The Modern C++ Challenge written by Marius Bancilla. The book is a collection of programming problems (along with suggested solutions) targeting C++ . The title of the book is a […]
In my earlier article Calling Go Functions from Lisp, I explained the steps for making calls to Go functions from another language, specifically LispWorks Lisp. Today, I want to give a slightly more interesting example showing the use of Go channels through exported functions. Go is widely admired for its native support for concurrency via Goroutines. […]
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