Reduce GPS data error on Android with Kalman filter and accelerometer
IT blog about developing and managing enterprise-level software solutions for blockchain, fintech, transportation & logistics, security, edtech, and advertising industries.
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The most popular blog posts about databases & data on Hacker News. 2,338 posts.
IT blog about developing and managing enterprise-level software solutions for blockchain, fintech, transportation & logistics, security, edtech, and advertising industries.
A deep dive into the Probabilistic B-tree or Prolly Tree data structure including examples. Prolly Trees are used to create version controlled databases.
Visualizing spatial data is an important task. This tutorial helps you with getting started with visualizing OSM data with PostGIS and QGIS.
GiveDirectly partnered with academic researchers to find out how cash transfers affect local economies, including nearby non-recipients. Read the results.
The third annual Prime Day set another round of records for global orders, topping Black Friday and Cyber Monday, making it the biggest day in Amazon retail history. Over the course of the 30 hour event, tens of millions of Prime members purchased things like Echo Dots, Fire tablets, programmable pressure cookers…
Over the last 6 months, we collected ~10k hours of data across thousands of unique individuals. As far as we know, this is the largest neuro-language dataset in the world. [1] See here , here , here , here , and here (discussion only, no data available) for some of the larger datasets. See recent papers discussing the…
Why are streaming joins so tricky? Discover the hidden complexities of real-time data, and learn how to tame the infinite stream!
TimescaleDB expands PostgreSQL query performance by 1000x, reduces storage utilization by 90%, and provides time-saving features for time-series and analytical.
As part of the 2011 Wikimedia Summer of Research, we uncovered a possible correlation between the decline in new active editors that began in 2007 and the rise of warnings issued to new users by bo…
Today, we’re pleased to release pg_clickhouse, an Apache 2-licensed PostgreSQL extension to transparently execute analytics queries on ClickHouse directly from PostgreSQL.
We've improved OpenSfM—the technology we use to create 3D reconstructions from images. By adding post-processing, we get denser 3D point clouds resulting in better visualization, positioning, and much more.
Dead tuples from high-churn job queues can silently degrade your Postgres database when vacuum falls behind—especially alongside competing workloads. Traffic Control keeps cleanup on track.
We're releasing Rerun 0.9.0 with a completely revamped API that gives more control over the underlying data model, a hierarchical and time aware Entity Component System (ECS).
How to inspect the network traffic of an app with Fiddler Everywhere and scrape the data from its servers.
MariaDB is a popular open source SQL database which began as a fork of MySQL . MariaDB Galera Cluster is an active-active replication system for MariaDB which allows reads and writes on every node. In 2015 this author analyzed MariaDB with Galera Cluster and found that although Galera claimed to offer Snapshot…
Digital Democracy is now Awana Digital
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Update 2025/07/21: Microsoft heard the complaints, and fixed the reliability added a better status page. Baby steps. Last week, Microsoft Fabric went down yet again for hours on multiple continents. Oh, you didn’t hear about it? Let’s talk about why. First, Fabric’s status page is fabricated bullshit. The link…