Deezer Research @RecSys 2017 — 11th ACM Recommender Systems Conference

A key aspect of Deezer product is providing our users with a personalized listening experience. To pick the perfect tracks for the right moment, a wide variety of signal processing and machine learning algorithms are involved in Deezer’s…

What’s Right with Errors

You’re enjoying your app when suddenly an error message pops up, reading “Error: Something went wrong” Or you’re developing a new feature and attempting to interact with this outdated API that just returns NO when you call [Obscure.sharedManager doYourMagic] … And you’re frustrated!

Improving your ingestion performance using the multidisciplinary approach

When it comes to solving a problem, developers often tend to use the technologies they’re comfortable with — the technologies they work with on a daily basis. Most of the time this is fine — we work within a specific scope in which this technology makes sense and has already…

Are you chilling right now? Contextualizing music recommendations

As you may know, Sonar Festival is one of the biggest electronic music festivals in Europe and takes place every June in Barcelona. Alongside the festival, Sonar organizes a technical challenge as part of the Sonar +D. For this event, Sonar has partnered with…

Women’s Voices — A Data Story

Part. 1: Women’s Voices — A Product Story Part. 2: Women’s Voices — A Brand Story Part. 3: Women’s Voices — A Data Story Part. 4: Women’s Voices — A…

From Paris to Bordeaux, an interview with Deezer’s CTO

On this (special) occasion, the…

Focus and Contrast

The Deezer logo as seen by someone with Protonapia (Red-Green Color-blindness). This image was created using the Chrome extension ChromeLens, which allows you to view a website as seen by someone with a variety of visual conditions, from color-blindness to those with partial sight. In the last article, we looked…

FOSDEM 2018

What is FOSDEM? FOSDEM (Free and Open-source Software Developer’s European Meeting) is one of the largest European open-source and non-commercial conference, taking place annually at the Université Libre de Bruxelles. This year it offered more than 650 lectures presented by 600 speakers on 50 different themes. It’s a real place to share and…

Detecting explicit content in songs

We’ve done some research about how to automatically detect explicit content in songs using only the music itself, and no additional metadata. Since it’s a sensitive and subjective issue, we did not want to use a black-box model, but rather build a modular system whose decisions can be traced back…

What The Bug? Our method to detect outliers

Who are we? We are the Data-Analytics team. Insights, numbers, dashboards… we provide data to our company. The goal? Help business and product teams in designing music and digital experiences that will be the best they can be for our users. Why do we need to detect outliers? As a tech data team, we rely on different KPIs. We check…

Some Fun with Deezer Data and Elastic Graph

A year ago the Elastic team released the Graph product, whose promise is to offer: a new way to discover, and explore, the relationships that live in your data. Here we will describe how Graph could be used on Deezer data to rebuild our “Similar Artists” feature. What do we…

Women & Hip-Hop

Playlist inspired by the article: Women & Hip-Hop playlist - Listen now on Deezer | Music Streaming nielswww.deezer.com Introduction Hip-Hop was born in 1973 on 1520 Sedgwick Avenue in the Bronx, NYC. On January 4th 2018, it became the most consumed music genre in the United States, surpassing rock for the first time in history. In between those years, Hip-Hop and especially rap music…

‘Hey Siri, play my Flow on Deezer’ (part 1.): a product introduction

Voice interactive devices and services have significantly spread over the last four years. Consequently, voice assistants have become smarter and more sophisticated in their ability to handle new and complex demands. Moreover, voice assistance has also become an available feature in more and more devices. In 2018, Apple announced that…

1001 ways to code your projects, 1 way to meet your needs

Have you ever noticed that there are about 1001 ways to do something, especially in software development? As I tell every developer who joins my team, especially interns or junior devs, no one knows everything and every solution should be considered. I was recently confronted with 1001 ways of doing…

Women’s Voices — A Product Story

Part. 1: Women’s Voices — A Product Story Part. 2: Women’s Voices — A Brand Story Part. 3: Women’s Voices — A Data Story Part. 4: Women’s Voices — A…

Akka as a bridge between REST and Kafka

Source: sciencing.com At Deezer, we love to play different chords, and to play with different technologies. Here we will present a solution to the problem of receiving millions of messages per day from a REST endpoint, processing them and pushing them back to Kafka. Inspired by The Reactive…

Private libraries in Android — how to manage them.

Part 1: Private libraries in Android — why you should consider it Part 2: Private libraries in Android — how to manage them In the first part of the series, we talked about the benefits of private libraries. On top…

Creating cron job vitals with Prometheus Pushgateway

Software Engineering is often all about automating what can be automated. That’s why we build cron jobs. cron is a utility that can be found in any Unix-like system, used to schedule tasks and commands that need to be executed repeatedly (i.e. every hour or every day). For example, we…

Musicathon — Let’s Rock IT Innovation

Visualize your music DNA with Data

At Deezer, we take the world of music and make it personal. That’s why we designed Flow, your personal soundtrack, and a dynamic home page to help you find your perfect tracks in no time. But does personal content only revolve around music recommendation? Of course not! This article will…

A better way to search for music through query suggestion

At Deezer, we are fully aware that the number one reason why users subscribe to our service is to access the depth of our catalogue of 50 million tracks. And for that the Search is key. Some history To provide a best in class user experience, the Search team at Deezer had…

Deezer ConTEST, where Product and QA meet

As the event will take place in Paris, this post is available both in French and in English (scroll down for the English version). Nous organisons Deezer ConTEST, premier événement qui associera une quarantaine de participants dans le cadre d’une journée de challenges, de brainstorming et de chasse aux…

Releasing Spleeter: Deezer R&D source separation engine

In a nutshell We are releasing Spleeter to help the research community in Music Information Retrieval (MIR) leverage the power of a state-of-the-art source separation algorithm. It comes in the form of a Python Library based on Tensorflow, with pretrained models for 2, 4 and 5 stems separation. Spleeter will be presented…

‘Hey Siri, play my Flow on Deezer’ (part 2): integrating SiriKit with Deezer

Following WWDC19 announcements, Deezer quickly decided to support Media Intent with SiriKit. To know more about all the benefits of integrating a voice assistant in your app, you can read this post written by Anna Louis, Product Owner of Voice at Deezer. Adding support of SiriKit…

Let’s meet at Android Makers 2017

Next week, Deezer will be partner of Android Makers 2017. Several of our Android engineers will join the event to enjoy the technical sessions, workshops, and debates, learn from others and discuss about our mobile technical challenges and opportunities.