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- Apache Spark native functions
- Unicorn pressures and startup failures
- Advertising marketplace design
- Angel investing strategies
- JSON and JSONlines from the command line
- My most favorite math proof ever
- Monitoring Redis with MONITOR and WireShark
- Google and the ecosystem test
- Anatomy of an online ad
- Startup anti-pattern: platform risk
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Author Archives: Simeon Simeonov
Apache Spark native functions
There are many ways to extend Apache Spark and one of the easiest is with functions that manipulate one of more columns in a DataFrame. When considering different Spark function types, it is important to not ignore the full set … Continue reading
Unicorn pressures and startup failures
The startup anti-patterns section of my blog summarizes the repeatable ways startups waste time & money and, often, fail. Learning from startup failure is valuable because there are many more examples of failures that successes. (Anti-)Patterns become more noticeable and … Continue reading
Advertising marketplace design
In the past decade several Nobel prizes in Economics have been awarded in the broader area of market (mechanism/auction/game) design. This is not surprising as the combination of Internet connectivity and ample computing resources are causing automated markets to pop … Continue reading
Posted in Advertising, Digital Media
Tagged adtech, Advertising, market design, OpenRTB, programmatic, programmatic advertising
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Angel investing strategies
My friend Jerry Neumann wrote a great post on angel investing strategies, dissecting truth and myth about different betting strategies and sharing his own approach. The question of luck came up and a commenter linked to my work on data-driven patterns of successful … Continue reading
Posted in angel investing, VC, Venture Capital
Tagged angel investing, investing strategies, VC, Venture Capital
4 Comments
JSON and JSONlines from the command line
At Swoop we have many terabytes of JSON-like data in MongoDB, Redis, ElasticSearch, HDFS/Hadoop and even Amazon Redshift. While the internal representations are typically not JSON but BSON, MsgPack or native encodings, when it comes time to move large amounts … Continue reading
Posted in Code
Tagged command line, jq, json, jsonlines, jsonpath, shell, Swoop, underscore, underscore-cli
5 Comments
My most favorite math proof ever
Math is beautiful and, sometimes, math becomes even more beautiful with the help of a bit of computer science. My favorite proof of all time combines the two in just such a way. Goal: prove that the cardinality of the … Continue reading
Posted in Uncategorized
5 Comments
Monitoring Redis with MONITOR and WireShark
At Swoop we use Redis extensively for caching, message processing and analytics. The Redis documentation can be pithy at times and recently I found myself wanting to look in more depth at the Redis wire protocol. Getting everything set up … Continue reading
Posted in Software Development
Tagged debugging proxy, MONITOR, Redis, redis-cli, Ruby, WireShark
1 Comment
Google and the ecosystem test
I am roaming the halls of Google I/O 2013 and wondering whether Google’s platform passes the ecosystem test. … no platform has become hugely successful without a corresponding ecosystem of vendors building significant businesses on top of the platform. Typically, … Continue reading
Anatomy of an online ad
I’ve been asked to explain how online ads are delivered many times and every time I’m surprised by the complexity of covering even the most basic elements of how ads appear on Web pages. Since Wikipedia’s article on ad serving … Continue reading
Posted in Advertising, Swoop
Tagged adtech, Advertising, display advertising, DoubleClick, Evidon, Evidon Encompass, Google, Swoop, Yahoo
1 Comment
Startup anti-pattern: platform risk
One of the fastest ways for a startup to grow has always been to ride on the shoulders of a successful platform: from Microsoft/OSS in software to AWS in cloud computing to iOS/Android in mobile to Facebook/Twitter/Pinterest in social to … Continue reading
Posted in Anti-pattern, startups
Tagged anti-pattern, forced upgrades, lock in, platform risk, poison pill, startup anti-patterns, startups
6 Comments
