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Geometric Brownian motion with Java

The Wiener process is a continuous-time stochastic process named in honor of Norbert Wiener. It’s commonly used to represent noise or financial development with a random component. The geometric brownian motion can be calculated to visualize certain bounds (in quantiles) to hint about the absolute range. For calculation following parameters are required: µ (mu): mean percentage σ (sigma): variance t: ...

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Second-Level Thinking

Howard Marks is a well respected investor and the founder of Oaktree Capital Management. In a recent letter to investors, he introduced a concept that he calls ‘Second-Level Thinking’. In his words: This is a crucial subject that has to be understood by everyone who aspires to be a superior investor. Remember your goal in investing isn’t to earn average ...

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Using Apache Drill REST API to Build ASCII Dashboard With Node

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Apache Drill has a hidden gem: an easy to use REST interface. This API can be used to Query, Profile and Configure Drill engine. In this blog post I will explain how to use Drill REST API to create ascii dashboards using Blessed Contrib. The ASCII Dashboard looks like: Prerequisites Node.js Apache Drill 1.2 For this post, you will use ...

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Effective UI tests with Selenide

Waiting for miracles Christmas is a time for miracles. On the eve of the new year we all build plans for the next. And we hope that all problems will leave in the ending year, and a miracle happens in the coming year. Every Java developer dreams about a miracle that lets him become The Most Effective Java Developer in ...

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Rebooting ALM, Part IV: Fantasy

 This is the final part of the Rebooting ALM series. You should also read: Part I: Evolution Part II: Power Part III: Weakness We’ve covered where ALM tools excel, and where they falter. Now, allow me to fantasize about how we can take a leap forward and start solving actual problems for real ALM users (that’s us). Most of our work starts ...

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Kotlin for Android Developers

We Android Developers have a difficult situation regarding our language limitation. As you may know, current Android development only support Java 6 (with some small improvements from Java 7), so we need to deal every day with a really old language that cuts our productivity and forces us to write tons of boilerplate and fragile code that it’s difficult to ...

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