Programming, AI, Machine Learning & Software Development Tutorials
The most-cited AI deployment in enterprise history has a second chapter almost nobody reads carefully — and it isn’t the story you think it is. On 27 February 2024, Klarna published a press release that would end up in more consulting decks than possibly any other document of the AI era. The Swedish buy-now-pay-later company … Read more
To analyze user activity across multiple months, a self-join approach in SQL is preferred over separate joins, as it optimizes performance significantly. By matching records on MemberID and counting members in valid month pairs, one can efficiently identify active users without extensive resource use. Proper indexing further enhances this method.
If you’re working with SAP HANA and trying to join a parameterized view with other tables, you may encounter the following error: The confusing part is that the view executes perfectly when called directly, but fails when used inside a JOIN. In this article, we’ll walk through the root cause of this issue, understand how … Read more
In this series we bring new Data Scientist Interview Questions. You can read other tutorials related to same topic on our website. What is Cross Validation? Cross-Validation in Machine Learning is a statistical resampling technique that uses different parts of the dataset to train and test a machine learning algorithm on different iterations. The aim … Read more
Step 1 : Download mongo-c-driver
Step 2 : Updated GCC and G++ compiler after version 5 .current version 7 in system .
Step 3 : Mongo-c-driver Version(1.15.x) version is same version and with mongo-cxx-driver (3.5.x)
Step 4 : Updated CMake 3.2 or later.
Step 5 : Install Mongo-cxx-driver
Step 1: Add the MongoDB Repository First, create a .repo file for MongoDB. This will make sure you can install the latest stable version of MongoDB. Create the repo file: Add the next content to the file: 3. Save and exit: Press Ctrl + O to write out, then press Enter. Press Ctrl + X … Read more
Coalesce is a SQL function used for handling NULL values. It returns the first non-null expression from the list. Each expression is evaluated for being NULL or not and the first non-null expression will be returned as the output. It takes at least two arguments in the list.