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Engineering · Data Science · SecurityGraph for fraud detection
Fraud detection has become increasingly important in a fast growing business as new fraud patterns arise when a business product is introduced. We need a sustainable framework to combat different types of fraud and prevent fraud from happening. Read and find out how we use graph-based models to protect our business from various known and unknown fraud risks.
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Engineering · Data ScienceQuery expansion based on user behaviour
User behaviour data is a gold mine to gain insights about users and help us improve user experience. In this blog, we explore a query expansion framework based on user rewrite behaviour and how it improves user search experience and conversion.
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Engineering · Data Science · SecurityUsing mobile sensor data to encourage safer driving
Telematics is most commonly used to monitor vehicle movements and track driving safety, profiling, fleet optimisation and possible productivity improvements. Read this to find out more about how Grab uses telematics to encourage safer driving across our driver and delivery partner fleet.
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Engineering · Data ScienceAutomatic rule backtesting with large quantities of data
At Grab, real-time fraud detection is built on a rule engine. As data scientists and analysts, we need to analyse and simulate a rule on historical data to check the performance and accuracy of the rule. Backtesting, also known as Replay, enables analysts to run simulations of either newly-invented rules, or evaluate the performance of existing rules using past events ranging from days to months, and significantly improve rule creation efficiency.
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Engineering · Data ScienceHow we store and process millions of orders daily
The Grab Order Platform is a distributed system that processes millions of GrabFood or GrabMart orders every day. Learn about how the Grab order platform stores food order data to serve transactional (OLTP) and analytical (OLAP) queries.
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Engineering · Security · Data ScienceGraph Networks - 10X investigation with Graph Visualisations
As fraud schemes get more complex, we need to stay one step ahead by improving fraud investigation methods. Read to find out more about graph visualisation, why we need it and how it helps with uncovering patterns and relationships.
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Engineering · Security · Data ScienceHow facial recognition technology keeps you safe
Facial recognition technology has grown tremendously in recent years due to the rise of deep learning techniques and accelerated digital transformation. Read to find out more about facial recognition technology in Grab and the components that help keep you safe.
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Engineering · Data ScienceAutomated Experiment Analysis - Making experimental analysis scalable
Analysts and data scientists invest lots of time into creating trustworthy experiments, which are key to making sound decisions. Read to find out how Automated Experiment Analysis helps make experimental analysis more scalable.
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Engineering · Data ScienceHow telematics helps Grab to improve safety
Coupled with data science, telematics can help to detect traffic events such as harsh braking and unsafe lane changes so we can provide a safer experience for our users. Read on to find out more about the challenges faced and how we addressed them with telematics.
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Engineering · Data ScienceReal-time data ingestion in Grab
When it comes to data ingestion, there are several prevailing issues that come to mind: data inconsistency, integrity and maintenance. Find out how the Caspian team leveraged real-time data ingestion to help address these pain points.
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Data ScienceUsing real-world patterns to improve matching in theory and practice
Find out how real-world patterns can be used to improve algorithm performance when performing bipartite matching for passengers and driver-partners.
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Engineering · Data ScienceSecuring and Managing Multi-cloud Presto Clusters with Grab’s DataGateway
This blog post discusses how Grab's DataGateway plays a key role in supporting hundreds of users in our entire Presto ecosystem - from managing user access, cluster selection, workload distribution, and many more.
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Engineering · Data ScienceThe Journey of Deploying Apache Airflow at Grab
This blog post shares how we designed and implemented an Apache Airflow-based scheduling and orchestration platform for teams across Grab.
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Data ScienceDoes Southeast Asia Run on Coffee?
This blog post shares insights on GrabFood data around how much our fellow Southeast Asians love coffee.
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Data ScienceGrabChat Much? Talk Data to Me!
This blog post uncovers some interesting insights from our GrabChat data in Singapore, Malaysia, and Indonesia.
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Data Science7 Fun Facts about Grab’s Driver-Partners in Singapore
This blog post shares the most interesting data points from 2019 about our Singapore driver-partners.
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Data Science · EngineeringData First, SLA Always
Introducing Trailblazer, the Data Engineering team’s solution to implementing change data capture of all upstream databases. In this article, we introduce the reason why we needed to move away from periodic batch ingestion towards a real time solution and show how we achieved this through an end to end streaming pipeline.
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Data Science · ProductMaking Grab’s Everyday App Super
To excel in a heavily diversified market like Southeast Asia, we leverage on the depth of our data to understand what sorts of information users want to see on our Feed and when they should see them. In this article we will discuss Grab Feed’s recommendation logic and strategies, as well as its future roadmap.
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Engineering · Data ScienceCatwalk: Serving Machine Learning Models at Scale
This blog post explains why and how we came up with a machine learning model serving platform to accelerate the use of machine learning in Grab.
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Data ScienceTourists on GrabChat!
Just over two years ago we introduced GrabChat, Southeast Asia’s first of its kind in-app messaging platform. Since then we’ve added all sorts of useful features to it such as auto-translated messages, the ability to send photos, and even voice messages! It’s been a great tool to facilitate smoother communications between our driver-partners and our passengers, and one group in particular has found it incredibly useful: tourists!
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Data ScienceBubble Tea Craze on GrabFood!
Bubble Tea’s popularity on GrabFood has captured our attention and we want to celebrate its fascinating growth with you! We have deep-dived into Grab’s Big Data to find the most interesting bubbles of treasures that can excite your palette. Hopefully these insights can help you understand what’s behind the Bubble Tea craze in GrabFood in Southeast Asia!
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Data ScienceHow We Harnessed the Wisdom of Crowds to Improve Restaurant Location Accuracy
We questioned some of the estimates that our algorithm for calculating restaurant wait times was making, and found that the "errors" were actually useful to discover restaurants whose locations had been incorrectly registered in our system. By combining such error signals across multiple orders, we were able to identify correct restaurant locations and amend them to improve the experience for our consumers.
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Data Science · Engineering · Product · DesignRecipe for Building a Widget: How We Helped to “Peak-Shift” Demand by Helping Passengers Understand Travel Trends
We help to “peak-shift” demand by helping passengers understand travel trends with Grab’s data. Curious to know how we empower our passengers to make better travel decisions? Read on!
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Data ScienceUnderstanding Supply & Demand in Ride-hailing Through the Lens of Data
Grab aims to ensure that our passengers can get a ride conveniently while providing our drivers better livelihood. To achieve this, balancing demand and supply is crucial. This article gives you a glimpse of one of our analytics initiatives - how to measure the supply and demand ratio at any given area and time.
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Data ScienceJourney of a Tourist via Grab
Grab's services to tourists are an integral part of connecting tourists to various destinations and attractions. Do tourists travel on Grab to outlandishly fancy places like those you see in the movie "Crazy Rich Asians"? What are their favourite local places? Did you know that Grab's data reveals that medical tourism is growing in Singapore? Here are some exciting travel patterns that we found about our tourists' Grab rides in Singapore!
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Data ScienceGrab Senior Data Scientist Liuqin Yang Wins Beale-Orchard-Hays Prize
Grab Senior Data Scientist Dr. Liuqin Yang wins the 2018 Beale-Orchard-Hays Prize, the highest honor in Computational Mathematical Optimization. He has been recognised for his paper and the corresponding software SDPNAL+.
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Data ScienceGrabShare at the Intelligent Transportation Engineering Conference
We're excited to share the publication of our paper GrabShare: The Construction of a Realtime Ridesharing Service, which was Grab's contribution to the Intelligent Transportation Engineering Conference in Singapore last month.
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Data ScienceThe Data and Science Behind GrabShare Part I: Verifying Potential and Developing the Algorithm
Launching GrabShare was no easy feat. After reviewing the academic literature, we decided to take a different approach and build a new matching algorithm from the ground up.
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Data Science · Product
How to Go from a Quick Idea to an Essential Feature in Four Steps
How do you work within a startup team and build a quick idea into a key feature for an app that impacts millions of people? It's one of those things that is hard to understand when you just graduate as an engineer.
