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Converting ListenableFutures to CompletableFutures and back

Java 8 introduced CompletableFutures. They build on standard Futures and add completion callbacks, future chaining and other useful stuff. But the world did not wait for Java 8 and lot of libraries...

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Converting RxJava Observables to Java 8 Completable future and back

I have been working on a small project that converts between different types of Java futures. The most challenging conversion is from/to RxJava observable. The reason is simple – RxJava observable is...

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Machine learning for dummies – Logistic Regression

Hi, welcome to my on-line course "machine learning for dummies". Usually courses like this are written by an expert. This is not my case, though. I do not know anything about machine learning. I have...

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Machine Learning for dummies – overfitting

Before we can move to more advanced topics, we should discuss over and underfitting. It reminded me my high school biology lessons. We were expected to recognize different kinds of flowers. In the...

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Machine learning for dummies – Support Vector Machines

Support Vector Machines, it sounds scary. Might be a name of some horror movie. Revenge of Support Vector Machines. But do not worry, for us dummies it's not so complicated. I promise I will not use...

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Machine Learning for dummies – Logistic Regression internals

Before we can start with neural networks, we should talk a bit more about Logistic Regression – without understanding Logistic Regression, we can not understand neural networks. Moreover, I have...

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Machine Learning for dummies – Neural Networks

Even though Neural Networks are the most cool thing in machine learning, they conceptually are just multiple linear regressions chained one after the other. So I will not draw any fancy pictures of...

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Machine Learning for dummies – word2vec

Last time we have skimmed through neural networks. Today I'd like to describe one cool algorithm that is based on them. Up until now we have worked on character recognition in images. It's quite...

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Machine Learning – word2vec results

Last time we have discussed word2vec algorithm, today I'd like to show you some of the results. They are fascinating. Please remember that word2vec is an unsupervised algorithm, you just feed it a lot...

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Mistakes I made designing JsonUnit fluent API

Several years ago, I have decided that it would be nice to add fluent API to JsonUnit library. If you are not familiar with fluent assertion APIs it looks like this....

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