LISP

Book Review – The Common Lisp Condition System: Beyond Exception Handling with Control Flow Mechanisms.

Written by on November 8, 2020 in Book Review, LISP, Programming with 0 Comments
Book Review – The Common Lisp Condition System: Beyond Exception Handling with Control Flow Mechanisms.

Title: The Common Lisp Condition System: Beyond Exception Handling with Control Flow Mechanisms Author: Michał “phoe” Herda Publisher: Apress Year: 2020 Unlike with other languages, it is rare to find new books being published on Lisp. The last book on Lisp, which I purchased was “Common Lisp Recipes”  by Edmund Weitz in March 2016. After a […]

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Using Random Walk Principle to Generate Music

Written by on October 24, 2020 in LISP, Music, Programming with 0 Comments
Using Random Walk Principle to Generate Music

In mathematics, the simplest example of Random Walk is a random process along a one-dimensional plane of integers, starting at 0 and moving in the positive or negative direction in steps of +1 or -1, with equal probability. The Random Walk theory has been applied in many domains including Physics and even the Stock Market. Here is a […]

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Template-based Text Generation – Part 2

Written by on October 11, 2020 in LISP, Natural Language Processing, Programming with 0 Comments
Template-based Text Generation – Part 2

In my previous article, I showed how “iLangGen” framework facilitates text generation using templates. I talked about the various “patterns” that can be used in a template. However, in that article, I did not go into the details of the “Embedded Template” pattern. That is the focus of today’s article. Embedded Template This pattern allows […]

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Template-Based Text Generation

Written by on September 28, 2020 in LISP, Natural Language Processing, Programming with 0 Comments
Template-Based Text Generation

I had written earlier about natural language generation using my iLangGen framework. I used a “template” text file which was instantiated dynamically based on predefined “grammars” and external data. The sample application I show-cased demonstrated its utility and versatility. Today I would like to touch upon a few other “pattern” elements that can be embedded in […]

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Elixir: Wrapping Lisp Calls in a Macro

Written by on August 1, 2020 in Elixir, LISP, Programming with 0 Comments
Elixir: Wrapping Lisp Calls in a Macro

In the last article, I showed how to make calls to Lisp functions from Elixir. We followed this pattern: 1) Initialize the Lisp environment by calling Lisp.init 2) Call Lisp functions as needed 3) Free the Lisp environment by calling Lisp.quit Using the powerful macro programming capabilities of Elixir, we can write a simple macro […]

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Calling Lisp Functions from Elixir

Written by on July 19, 2020 in Elixir, LISP, Programming with 0 Comments
Calling Lisp Functions from Elixir

In the last article I showed how we can simulate the idea of Lisp’s “closure” in Elixir. Today, I would like to demonstrate how we can call Lisp functions from Elixir using the NIF interface. What is the need to integrate Elixir with another language? I can think of two reasons: 1) We have a library […]

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Closure in Lisp vs Elixir

Written by on July 5, 2020 in Elixir, LISP, Programming with 0 Comments
Closure in Lisp vs Elixir

I started learning Elixir a week ago. Although this has been at the top of my To-do list for quite a while, I couldn’t take it up due to other commitments.  I love Elixir. It is a great functional programming language. Having programmed in Lisp for a long time, I immediately noticed the similarity between Lisp […]

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Using Augmented Transition Networks (ATN) for Information Extraction

Written by on November 23, 2019 in LISP, Natural Language Processing, Programming with 0 Comments
Using Augmented Transition Networks (ATN) for Information Extraction

After Wood’s paper [1], Augmented Transition Networks (ATN) became popular in the 1970s, for parsing text. An ATN is a generalized transition network with two major enhancements: Support for recursive transitions, including jumping to other ATNs Performing arbitrary actions when edges are traversed Remembering state through the use of registers See the “Further Reading” section at […]

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Custom Text Analysis Using TextRazor’s Prolog Engine

Written by on July 21, 2019 in LISP, Natural Language Processing, Programming, Prolog with 0 Comments
Custom Text Analysis Using TextRazor’s Prolog Engine

This is the third part in the series on information extraction from unstructured text. In the first part, we saw how MeaningCloud allows us to specify complex rules to identify custom categories through their Deep Categorization API. The second part covered spaCy’s pattern matcher. Today, I would like to discuss how we can use TextRazor’s “Prolog Engine” to perform […]

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Currying in Mathematica

Written by on May 19, 2019 in LISP, Mathematica, Programming with 0 Comments
Currying in Mathematica

One of the more recent additions to the core Wolfram Language is the “Curry” function. It was introduced in Mathematica ver 11.3 and is still (as of ver 12.0) considered Experimental. In this post, I would like to go over this function briefly. Non-curried functions in Mathematica have to be invoked with the arguments (both […]

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