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Engineering · ProductNew zoom freezing feature for Geohash plugin
Built by Grab, the Geohash Java OpenStreetMap Editor (JOSM) plugin is widely used in map-making, but a common pain point is the inability to zoom in to a specific region without displaying new geohashes. Read to find out more about the issue and how the latest update addresses it.
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Engineering · Security · Data ScienceGraph service platform
Graphs are powerful data representations that detect relationships and data linkages between devices and help reveal fraudulent or malicious users. Learn how GrabDefence built the graph service platform to help discover potentially malicious data linkages.
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Engineering · SecurityZero trust with Kafka
In addition to ensuring the high performance and availability of our services, security continues to be one of our highest priorities. Read this article to find out how the Coban team enhances security by moving from network-based access control to zero trust with Kafka.
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Engineering · Product · DesignHow KartaCam powers GrabMaps
The foundation for making maps lies in imagery and ensuring that it is fresh, high quality, and collected in an efficient yet low-cost manner. Read this to find out how the Geo team created KartaCam, how it addresses those concerns, and its future enhancements.
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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.
