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All posts by Alex Khizhniak

The Apriori Algorithm vs. k-means Clustering for a Recommendation Engine

November 3, 2013 | 0 Comments | Alex Khizhniak...
When building a recommender for an online movie store, completely different approaches may exist.

Big Data in Denmark: Notes from IT Messe 2013

October 17, 2013 | 0 Comments | Alex Khizhniak
Although the big data market in Denmark is still young now, it is definitely growing.

DBaaS, PaaS, and other -aaS from Oracle OpenWorld 2013

October 1, 2013 | 18 Comments | Alex Khizhniak...
The annual event took place in San Francisco (CA) on September 22–26, attracting IT pros and enterprise decision makers.

Top 20 Quotes from Platform, The Cloud Foundry Conference

September 16, 2013 | 0 Comments | Volha Kurylionak...
Learn what the members of the Cloud Foundry community think about the future of the PaaS and what it means to the world.

How to Add PostgreSQL Full-text Search to Ruby Apps and Optimize Its Performance

September 11, 2013 | 0 Comments | Pavel Astraukh
Learn how to enable a full-text search by a title, content, author's name, and comments for a RoR application.

Helping NephoScale to Build CloudPaaS, a Platform Based on Cloud Foundry

September 9, 2013 | 0 Comments | Alex Khizhniak
Embodying Cloud Foundry v2.0, the new Platform as a Service provides advanced features for fast and simple testing, deployment, and scaling of apps in the cloud.

Deploying the Discourse Discussion Platform with Juju Service Orchestration

September 3, 2013 | 0 Comments | Pavel Pachkovskij
This blog post focuses on Juju, the service for building and managing public/private environments, and a Rack charm that simplifies deploying of RoR and Sinatra apps.

Increasing Performance of a 100-Node Hadoop Cluster: The Story of Joyent

August 30, 2013 | 0 Comments | Alex Khizhniak
Joyent now produces disk I/O response times 3x faster than similar solutions from other IaaS providers.

Data Visualization Tools: Flot vs. Highcharts vs. D3.js

August 27, 2013 | 0 Comments | Igor Zalutsky
The research compares three popular JavaScript libraries and evaluates how they manage massive data sets and enable real-time visualization.

Building Stock Trading Strategies: 20% Faster with Hadoop

August 16, 2013 | 0 Comments | Sofia Parfenovich
Learn how the technology improves the trading system’s performance and increases customer's revenues by 12% without additional investments.