Monitoring = (Elasticsearch + Logstash + Kibana ) + Kafka * Flink

I used to be regular business developer. Delphi, then Java. Recently working somewhere, where project was not veery interesting I came to the conclusion: I would like to bring a real business value here.

Then Elasticsearch came to my mind…

Czytaj dalej Monitoring = (Elasticsearch + Logstash + Kibana ) + Kafka * Flink

Django: Web MVC and DB DAO in minutes

On Django page you can read:

Django makes it easier to build better Web apps more quickly and with less code.

I decided to validate that statement.  And yeah, after working with Django for few days it turned out to be true. Following you may see how fundamental MVC tasks were implemented by me.
Czytaj dalej Django: Web MVC and DB DAO in minutes

Data Visualization is Data Communication

Another chapter from Udacity course is data visualization.   What I have learned was very important.  To acquire, munge and analyze data.  But it would be nothing when such a information wouldn’t be communicated to others. The easiest way it is to be done with data visualization.  I learned about Napoleon’s march to Russia and why you have to think twice before you will post hue-colored diagram.

Czytaj dalej Data Visualization is Data Communication

Data analysis and machine learning – Udacity thoughts

Lesson no 3 is about data analysis.  If you were able to collect data and prepare it it’s time to draw conclusions.  How to use datasets? How to predict the future? This is what I hoped to learn now..

Czytaj dalej Data analysis and machine learning – Udacity thoughts

Daj się poznać – status quo

Podsumowań czas
Projekt skauta jak wiele jednoosobowych krótkich projektów po godzinach z pomysłem i energią na początku nie jest w takiej formie w jakiej by mnie zadowalał. Czas na szczerość z wpadkami i śmiałe stwierdzenie co poszło dobrze!

Czytaj dalej Daj się poznać – status quo

Chiny to: smak, obyczaje, komunikacja i jej brak

Przybysze z innych krajów twierdzą, że po przybyciu na dane miejsce jesteś w stanie euforii nowości

wszystko co nowe jest ciekawe

Po jakimś czasie robi się nieco inaczej

wszystko co ciekawe, drażni

Wierzę, że to objęło by także mnie gdybym był tu dłużej. Tak się jednak składa, że jestem tu krótko więc obejmuje mnie pierwsza faza odczuć.

Czytaj dalej Chiny to: smak, obyczaje, komunikacja i jej brak

Data wrangling in practice

Are you going to play with data?  First, you have to wrangle data, prepare it and make useful.  Having practice session Wrangling Subway Data in udacity course was nice way to use my knowledge in practice.  Subway data is a good sample of dataset consisting of several columns in CSV file.
Czytaj dalej Data wrangling in practice

Prepare your data – wrangling

Data science in progress. Right now reading and applying rules from lesson no 2: Data preparation, so called data munching. This is not something you want to do as a data scientist, it’s just indispensable to prepare your data for later processing. As Nick says:

More than 50 percent of time is just coming through the data and guessing is it OK – Nick

What can you learn in lessons from Data Wrangling section.


First I was reminded about common data formats.  CSV, XML, JSON – these 3 are most popular in data world.  Thankfully Pandas offers good way of consuming and producing these formats.

SQL found here

It was brand new for me that after forming dataframe I can play with it as with the SQL table using pandasql library.  Udacity course shows potential of these SQL extensions in Aadhaar dataset containg our dear registered friends from India.  Using pandasql I can query dataset using SQL-92 syntax freely, including filtering (where) and grouping (group by).

call APIs

To process data you have to get it first.  Sometimes it can be available on some endpoint.  In Python you can easily call APIs using requests. It is as easy as

so you can easily get all info from any available endpoint and parse JSON response easily. It was an example to use that when querying against OpenFM API .

I miss you, value!

Missing values is another challenge you will find here, when dealing with data preparation.  Usually in pythonic way such values are None’s in dataframe.  What then?  We can impute, or guess what to do.  In baseball dataset I was encourage to use mean value as imputation. But better think twice! Imputation can lead to unclear conclusions.  Here it was done using numpy‚s mean function.

O odpoczywaniu i cyklach

Czy potrafisz odpoczywać? Niezależnie od wykonywanej pracy, ale zwłaszcza w wypadku pracy na pełen etat przy komputerze (co jakże często zdarza się nam programistom) jest to niezbędne. Regeneracja organizmu jest potrzebna by żyć lepiej i zdrowiej a także żeby pracować wydajniej.  Bez regeneracji organizmu nie dasz się poznać innym z dobrej strony! 

Czytaj dalej O odpoczywaniu i cyklach