Mixture of Experts-Introduction

Abdulkader Helwan
11 min readAug 10, 2023

Mixture of Experts (MoE) is like a teamwork technique in the world of neural networks. Imagine breaking down a big task into smaller parts and having different experts tackle each part. Then, there’s a clever judge who decides which expert’s advice to follow based on the situation, and all these suggestions are blended.

Although it was first explained using nerdy neural network stuff, you can use this idea with any type of expert or model. It’s a bit like when you combine different flavors to make a tasty dish, and this belongs to the cool group of ensemble learning methods called meta-learning.

So, in this guide, you’ll get to know the mixture of experts trick for teaming up models.

Once you’re through with this guide, you’ll have a handle on:

  • How a smart way to work together involves dividing tasks and letting experts handle each part.
  • Mixture of experts is a cool method that tries to solve prediction problems by thinking about smaller tasks and expert models.
  • This idea of breaking things down and building up connects to decision trees, and the meta-learner concept is kind of like the super-stacker in the ensemble world.

Subtasks and Experts

Let’s break it down a bit further: sometimes tasks in the world of prediction can get pretty complex, but the cool thing is, they can often be split into smaller pieces that make more sense.