Edit Distance (a.k.a. Levenshtein Distance) is a measure of similarity between two strings referred to as the source string and the target string. The distance between the source string and the target string is the minimum number of edit operations (deletions, insertions, or substitutions) required to transform the source into the target. The lower the distance, the more similar the two strings.
Continue reading “Edit Distance and Jaccard Distance Calculation with NLTK”
ChatBots have been a popular technology for many years, but with the recent advances in the fields of Natural Language Processing (NLP), Machine Learning (ML), and Artificial Intelligence (AI), many new and interesting uses for Chatbots have arisen. ChatBots have usually been deployed for automatically answering questions of users, but nowadays they can be programmed for more engaging behaviors, such as suggesting topics based on users profiles and interests. Nowadays, many APIs can be used by the Chatbots for answering users’ questions. For example, if someone asks the Chatbot “what is the expected weather for today?” the Chatbot can refer to an API such as OpenWeatherMap and answer the question.
In this tutorial, you will learn the basic concepts behind building a Chatbot.
Continue reading “ChatBots Development 1: Building Basic Chatbots for Facebook Mensseger”
In this tutorial, we introduce one of most common NLP and Text Mining tasks, that of Document Classification. Note that while being common, it is far from useless, as the problem of classifying content is a constant hurdle we humans face every day. It is important to know basic elements of this problem since many of them can be used for other tasks such as sentiment analysis.
Continue reading “Text Classification with Pandas & Scikit”
Neste tutorial, você vai aprender como logar em site que requerem um usuário e uma senha antes de mostrar páginas específicas.
Continue reading “Logando com o Scrapy FormRequest”
In this tutorial, you will learn how to use Scrapy to log into websites that require entering a username and password before showing specific pages.
Continue reading “Logging in with Scrapy FormRequest”
With online courses, you can study anywhere, at the time suitable for you, get full lifetime access, and a Certificate of Completion. It is a wonderful experience that enables you to be taught by international skillful instructors whom you might not get the chance to meet otherwise. Nowadays, e-learning is a great advantage of technology that enables you to easily improve your skills and enjoy the learning experience.
In this article, we are trying to recommend the 9 best Python courses currently available on Udemy, the prominent online courses platform.
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Today, we are going to learn about Scrapy; what Scrapy is overall, Scrapy versus other Python-based web scraping tools, why you should use it and when it makes sense to use some other tools, pros and cons of Scrapy, and that would be it. So let’s begin! Continue reading “Python Web Scraping Libraries: BeautifulSoup vs. Scrapy vs. Selenium”
Some APIs require authentication (API Key or Client ID and Client Secret, similar to a username and password, so to speak) to control their usage, and some do not. We will explain this later in multiple APIs. For the purpose of clarifying the basics, we will start with a very simple currency rate conversion API that does not require any authentication.
So this tutorial explains how to use Python to extract data from ExchangeRatesAPI.io which is -according to its official website- “a free service for current and historical foreign exchange rates published by the European Central Bank.” Continue reading “Data Extraction from APIs with Python – Currency Exchange”
If you come here searching for a discount coupon for our best-selling Scrapy course, you finally got it. Click here to get your Scrapy course coupon. Enjoy your hassle-free learning experience and earn more income through applying for well-paid Scrapy jobs. Continue reading “Scrapy: Powerful Web Scraping & Crawling with Python – Course”
In this Scrapy tutorial, you will learn how to write a Craigslist crawler to scrape Craigslist‘s “Architecture & Engineering” jobs in New York and store the data to a CSV file.
This tutorial is one lecture of our comprehensive Scrapy online course on Udemy, Scrapy: Powerful Web Scraping & Crawling with Python Continue reading “Scrapy Tutorial: Web Scraping Craigslist”