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Python Logic Programming With Example

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What is Logic Programming?

Logic programming is a programming paradigm that sees computation as automatic reasoning over a database of knowledge made of facts and rules. It is a way of programming and is based on formal logic. A program in such a language is a set of sentences, in logical form, one that expresses facts and rules about a problem domain. Among others, Datalog is one such major logic programming language family.

Structure

Let’s talk about facts and rules. Facts are true statements — say, Bucharest is the capital of Romania. Rules are constraints that lead us to conclusions about the problem domain. These are logical clauses that express facts. We use the following syntax to write a rule (as a clause):


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Microsoft Chatbot Framework: Up and Running

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Some time ago (think early to mid-nineties), I used to run a BBS. One Christmas, I logged onto another BBS based in Manchester, and they had a "Santa Chat."  I tried it for a while and was so impressed by it that I decided to write my own; it was basically the gift that kept giving. You put this thing on your BBS (basically an Eliza clone) and it records the responses of the unsuspecting users to a text file (or log).

These days there are laws against recording such things, but those were simpler times, and once they realized the joke, everyone was happy, and life went on (albeit at 14.4k bps).


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Alert Fatigue (Part 3): Automating Triage and Remediation

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This is part 3 in a series on alert fatigue. Read up on parts 1 and 2.

In many cases — as you’re monitoring a particular state of a system — you probably know some steps to triage or in some cases automatically fix the situation. Let’s take a look at how we can automate this using check hooks and handlers.

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Introducing Servlet 4.0 Server Push Using Spring Boot 2.1

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In this article, we will be talking about Server Push Technology that is actually part of the HTTP/2 spec.

The most important feature of Servlet 4.0, due to HTTP/2, is the implementation of the server push capability. The concept behind this technique is that if the client/browser requests a certain resource, the server assumes, in advance, that some other related resources may also be requested soon. Because of this assumption, it pushes them into the cache (called ‘cache push’) before they are actually needed. For example, it is very much likely that when a webpage is loaded, it may eventually request a CSS file or another image. The server proactively starts pushing the bytes of these assets simultaneously, without the need for the client to make an explicit request.

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What’s Wrong With Java Boxed Numbers?

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In Java, boxed numbers are instances of classes, such as java.lang.Integer  or  java.lang.Double , that wrap or "box" the respective primitive types: int,  double, etc. They were designed to allow Java apps to pass around numbers as objects and, more importantly, to store numbers in the common collections, such as java.util.ArrayList,  java.util.HashMap, etc. The need to store numbers in lists and maps is very common. To satisfy it, the JDK developers had two choices:

  • Provide specialized collections, i.e. lists and maps, for every primitive type and their combinations. For example, this could include IntArrayList, ObjectToDoubleHashMap,  IntToObjectLinkedHashMap,  IntToLongConcurrentHashMap, etc.

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Python Machine Learning Environment Setup 2018

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How to Install Python

Before anything else, you will need to Install Python on your machine. So, here are the steps to install Python.

Plain Download

You can download from the official website:


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Machine Learning in a Box (Part 9): Build Your First ML Application

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A Quick Recap

Last time, we looked at how to use TensorFlow from within SAP HANA, express edition. This allows you to surface your TensorFlow ModelServer models inside your instances and use them as a regular stored procedure.

This allows, for example, to process images or documents stored as blobs with an image classification model or something as simple as a classification on the Iris dataset.


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Mobile Test Automation Using the Robot Framework

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In the current technological era, it is normal to find 4-5 new Android-based apps uploaded to the Play Store every week. Seeing competitors deliver apps so frequently creates pressure to deliver quality apps in a short span of time. During this limited time, mobile application development and testing of the business’ purpose should be achieved. With this pressure, there is a need to automate certain processes which can save time while providing a trusted output.

That being said, mobile test automation can save a lot of time and is always preferred over the entire manual test execution process. With much less effort, the verification of frequent test cases that manual execution requires can be automated, and more effort can be diverted to new features of the application, which are vulnerable and tend to have more defects.

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Model and Load a Schema Into a Knowledge Graph

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In this tutorial, our aim is to write a schema and load it into our knowledge graph; phone_calls. One that describes the reality of our dataset.

The Dataset

First off, let’s look at the dataset we are going to be working with. Simply put, we’re going to have:


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VSTS Name Change in Azure DevOps Effects on Git Repositories

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As I’ve said in the past, it is super easy to build a VSTS Build (now Azure DevOps Pipeline) to keep two repositories in sync. In that article, one of the steps is pushing the new code to the destination repositories with a URL like https://$(token)@myaddress.visualstudio.com/DefaultCollection, to automatically include a token to authenticate in the destination repository.

Now, some of my builds have started to fail due to timeout and I immediately suspected the reason: the name change from VSTS to Azure DevOps changed the base URL from accountname.visualstudio.com to dev.azure.com/accountname, and this broke the build.

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