YouTube reliance on AI algorithm for video recommendation

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Every day, people all over the world view over 1 billion hours of YouTube videos. The YouTube algorithm is the recommendation system that determines which videos recommend to YouTube’s two billion-plus human viewers (and untold numbers of feline users). 

YouTube heavily relies on artificial intelligence to provide content. The newest YouTube algorithms place a high weight on the average amount of time a person spends watching a video, giving it a like or dislike, and leaving comments. Similarly, the recommender system is one of the most significant use cases of machine learning that every one of us encounters daily.

There are several ways to develop a recommendation system:

Collaborative Filtering: 

It tends to create partnerships between various people and objects in this sort of filtering (videos).

  • User-User Collaborative Filtering:  The goal here is to match different users’ tastes. It usually checks to see if a specific user will enjoy a given movie.
  • Item-Item Collaborative Filtering:  This method is similar to the one described above but focuses on correlating different things, such as videos. It tends to recommend similar videos based on the videos that viewers have liked.

Matrix Factorization:

It attempts to combine the user and item vectors, decomposing them and delivering better comparison metrics to YouTube. Although it is less computationally expensive than Item-Item collaborative filtering, this method lacks interpretability-it cannot answer “why they are recommending this video,” which leads to low accuracy.

Deep Learning Architecture:

Google announced Deep Learning architecture for YouTube recommendation in 2016, becoming one of the first companies to implement production-level deep neural networks for recommender systems.

Every day, millions of content ideas are uploaded to YouTube by users. The recommendation algorithm typically classifies movies based on the user’s attributes first and subsequently on the video’s information.

The algorithm looks at the user’s Watch History, Search History, User’s Taste, Age, Location, and Time, and then select a few videos to move on to the next step.

How does the YouTube algorithm work in 2021?

The YouTube algorithm chooses videos for users with two aims in mind: selecting the perfect video for each viewer and persuading them to watch more.

When talking about “the algorithm,” we’re referring to three distinct but linked selection or discovery systems:

  • one that chooses videos for the YouTube homepage,
  • one that ranks search results,
  • and one that selects what videos viewers should watch next.

According to YouTube, most channels’ homepage and suggested videos will be the primary traffic sources in 2021. Except for explainer or instructional videos(e.g., “how to tune up a bicycle”), which receive their traffic via search.

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