FPGA Setup: Interfacing with an External Circuit

The Introduction

For this post I will walk you through a project with a Field Programmable Gate Array (FPGA), which was interfaced with a hand constructed clock circuit (an astable multivibrator).

FPGA setup

External circuit to be interfaced with Mojo v3 FPGA development board

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Traceroute to the Front Door: Trimming Public Net Hops


Traceroute is a wonderful computer networking diagnostic tool. This article will attempt a traceroute script written in Python, including a customization that can identify just the routers within your private network (from the host up to and including the public/internet gateway). Continue reading

The Power of WordNet and How to Use It in Python

In this post, I am going to talk about the relations in WordNet (https://wordnet.princeton.edu) and how you can use these in a Python project. WordNet is a database of English words with different relations between the words.

Take a look at the next four sentences.

  1.  “She went home and had pasta.”
  2. “Then she cleaned the kitchen and sat on the sofa.”
  3. “A little while later, she got up from the couch.”
  4. “She walked to her bed and in a few minutes she was snoring loudly.”

In Natural Language Processing, we try to use computer programs to find the meaning of sentences. In the above four sentences, with the help of WordNet, a computer program will be able to identify the following –

  1. “pasta” is a type of dish.
  2. “kitchen” is a part of “home”.
  3. “sofa” is the same thing as “couch”.
  4. “snoring” implies “sleeping”.

Let’s get started with using WordNet in Python. It is included as a part of the NLTK (http://www.nltk.org/) corpus. To use it, we need to import it first.

>>> from nltk.corpus import wordnet as wn

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A Brief Survey on Software Recommendation Tools

Software engineering recommendation systems assist developers so that they can almost automatically find: 1) code snippets that match their programs, 2) appropriate APIs and libraries, 3) bug fixes, and 4) code changes. These systems are particularly important because they can help developers to handle large amounts of information and write stable programs. In this post, we briefly categorize existing recommendation approaches and tools.

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What is topic modeling?

Topic modeling is an Information Retrieval (IR) technique that discovers representative topics from a collection of documents. Thus, we expect that logically related words will co-exist in the same document more frequently than words from different topics. For example, in a document about the space, it is more possibly to find words such as: planet, satellite, universe, galaxy, and asteroid. Whereas, in a document about the wildlife, it is more likely to find words such as: ecosystem, species, animal, and plant, landscape. But why text classification is so useful? In this blog post, we try to explain the importance of topic modeling and its use in software engineering.

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