## Summing the Fibonacci Sequence

An image from nature (by Sustainable San Mateo). The golden ratio approximately (this is a topic for discussion) appears in here and is closely related to the Fibonacci sequence.

Consider the following problem (Project Euler, Problem #2):

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:

1, 2, 3, 5, 8, 13, 21, 34, 55, 89, …

By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.

Solving this problem by using a programming language is relatively easy and requires only looping through the sequence. How can you tackle this problem without the need for a computer? Spoiler alert: there is only one final step in which we will use a calculator.

## Mastering Pandas

In this course, you will learn how to use the Python Pandas. After the course, you will be able to:

• Visualizing data using line plots, scatter plots and histograms
• Merging and storing data

The course also includes more advanced topics, such as data parallelization and aggregation.

You can see all course content under “Curriculum” on Data Blogger Courses and the first three lessons are free. The first free lesson can be found here.

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## Project Euler using Scala: Problem #1

In this last post I gave a short introduction to Scala. In this article, I will show you the strength of Scala for solving one of the mathematical problems posted on Project Euler. The problem description is as follows:

## Multiples of 3 and 5

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000.

I will first show you a naive approach and then I will show you a better approach.

## Monitoring your cluster in just a few minutes using ISA

Suppose you have a cluster. Suppose you would like to monitor your cluster as soon as possible without installing all kind of tools on the cluster. A new software package named ISA has been created which can do centralized monitoring for you! This article is a walkthrough for ISA and helps you setting up monitoring for your cluster in just a few minutes.

## Features

• ISA can collect many node statistics such as CPU usage, memory usage and disk I/O.
• It is easy to setup and it has flexible node configuration.
• ISA ensures minimal influence for the node statistics.
• No setup required on the nodes, the statistic management is done centrally.

In this tutorial, we will setup ISA and collect cluster statistics in a CSV.

## CERN (deel 3) – Trip naar Zürich

In de serie CERN deel ik mijn ervaringen van mijn stage op CERN. Afgelopen week zijn we naar Zürich geweest (14 en 15 juli), de busreis was aan de lange kant, maar het was zeer de moeite waard!

Currywurst!