Publications by Al-Ahmadgaid Asaad
R: Text Mining on Twitter #PrayForMH370 Malaysia Airlines
It’s been two weeks for search and rescue operations on Malaysia Airlines Flight MH370, after it vanished from the radar on March 8, 2014. And wherever they are, we hope and pray for them.Photo from VENUS – Wall of Hope & Prayers for MH370In this post, we are going to do text data mining on Twitter tweets containing #PrayForMH370 from March ...
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R and Python Meetups, Philippines
There will be upcoming meetups for R User Group Philippines and Python Philippines (PythonPH) Community. Below are the details:R Meetuptopic: R for SAS users, and planning of RUG activities venue: 9/F Sun Life Centre, 5th Avenue corner Rizal Drive, Bonifacio Global City, 1634, Taguigdate: Thursday, June 19, 2014 �...
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R: Image Analysis using EBImage
Currently, I am taking Statistics for Image Analysis on my masteral, and have been exploring this topic in R. One package that has the capability in this field is the EBImage from Bioconductor, which will be showcased in this post.InstallationFor those using Ubuntu, you may likely to encounter this error:It has something to do with the tiff.h C h...
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R: k-Means Clustering on an Image
Enough with the theory we recently published, let’s take a break and have fun on the application of Statistics used in Data Mining and Machine Learning, the k-Means Clustering.k-means clustering is a method of vector quantization, originally from signal processing, that is popular for cluster analysis in data mining. k-means clustering aims to ...
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ALUES: Agricultural Land Use Evaluation System, R package
Authors:Arnold R. Salvacion [email protected]Data Analysis and Visualization using R (blog) Al-Ahmadgaid B. Asaad (maintainer...
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Principal Component Analysis on Imaging
Ever wonder what’s the mathematics behind face recognition on most gadgets like digital camera and smartphones? Well for most part it has something to do with statistics. One statistical tool that is capable of doing such feature is the Principal Component Analysis (PCA). In this post, however, we will not do (sorry to disappoint you) face reco...
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Canonical Correlation Analysis on Imaging
In imaging, we deal with multivariate data, like in array form with several spectral bands. And trying to come up with interpretation across correlations of its dimensions is very challenging, if not impossible. For example let’s recall the number of spectral bands of AVIRIS data we used in the previous post. There are 152 bands, so in total th...
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Philippine Infographic: Recapitulation on Incidents Involving Motorcycle Riding in Tandem Criminals for 2011-2013
The Philippine government has launched Open Data Philippines (data.gov.ph) last year, January 16, 2014. Accordingly, the data.gov.ph aims to make national government data searchable, accessible, and useful, with the help of the different agencies of government, and with the participation of the public. This website consolidates the data sets of ...
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R: How to Layout and Design an Infographic
As promised from my recent article, here’s my tutorial on how to layout and design an infographic in R. This article will serve as a template for more infographic design that I plan to share on future posts. Hence, we will go through the following sections: Layout – mainly handles by grid package.Design – style of the elements in the layou...
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Python and R: Basic Sampling Problem
In this post, I would like to share a simple problem about sampling analysis. And I will demonstrate how to solve this using Python and R. The first two problems are originally from Sampling: Design and Analysis book by Sharon Lohr.ProblemsLet $N=6$ and $n=3$. For purposes of studying sampling distributions, assume that all population values are ...
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