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Python 3Распознавание изображений на Python с помощью TensorFlow и Keras

May 13, 2020, 4:42 a.m.

RuCaptcha, TensorFlow, python, Keras

Введение

Одним из наиболее распространенных применений TensorFlow и Keras является распознавание и классификация изображений. Если вы хотите узнать, как использовать Keras для классификации или распознавания изображений, эта статья научит вас, как это делать.

Определения

Если вы не понимаете основных концепций распознавания изображений, вам будет сложно полностью понять основную часть этой статьи. Поэтому, прежде чем мы продолжим, давайте определимся с терминологией.

DjangoDjango - Tutorial 022. Adding a bookmark system (favorites) to the site

April 8, 2017, 6:52 a.m.

bookmark, AJAX, favorite, Django, jQuery

The site has the ability to mark articles, comments, topics and answers on the forum as favorites. However, marking as favorites does not provide a reload of the page, because for these actions the mechanism of AJAX-requests is used.

In order to implement the bookmark system, you need:

  • Add a table that implements the Many-to-Many relationship between the user and the article or comment.
  • Add a view that will handle this request.
  • Add url to handle the request to add or exclude an object from the favorites.
  • Write the html-code, which will be responsible for displaying the counter added to the bookmark.
  • Add a javascript handler that will call the AJAX request.

On this site, the icon of the star from Bootstrap is used as a counter icon.

DjangoDjango - Tutorial 021. Model Inheritance, Abstract Model

March 26, 2017, 12:45 a.m.

model, Django, наследование

After refactoring on the site, four main entities were identified, in which common properties were identified, namely:

  • Article - articles
  • Comment - comments
  • ForumTopic - Forum themes (questions)
  • ForumPost - Answers to forum topics

Of course, and so it was clear that these entities can have the same data fields, the same methods, etc. But when developing this site, I myself simultaneously study Python and Django. Therefore, the project has the character of chaotic introduction of small ToDo with subsequent refactoring in the study of the best approaches. Therefore, after studying the inheritance capabilities of models in Django, one general abstract data model was identified, PostBase , which has four fields that are repeated in all the above modeled models.

There is one important point here: A model that is declared abstract will not create a table in the database.

To create an abstract model, you must set the abstract variable to True for the Meta class.

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I am Evgenii Legotckoi, developer of EVILEG. And it is my hobby project, which helps to learn programming another programmers and developers

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