Time To Shine

December 29, 2017 | 0 Comments

Blogging and social media for introverts - How to spot an introvert You may have seen David Robinson’s recent post encouraging R users to start blogging. Some folk will willingly act on this advice, and others won’t. For those that won...
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Word Embeddings with Keras

December 21, 2017 | 0 Comments

Word embedding is a method used to map words of a vocabulary to dense vectors of real numbers where semanticaly similar words are mapped to nearby points. Representing words in this vector space help algorithms achieve better performance in na... [Read more...]

New R Course: Inference for Linear Regression

December 20, 2017 | 0 Comments

Hello there! We're launching a new R course today: Inference for Linear Regression by Jo Hardin! Previously, you learned the fundamentals of both statistical inference and linear models; now, the next step is to put them together. This course gives yo...
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Conference Cost

December 17, 2017 | 0 Comments

In last weeks post we tantalised you with upcoming R & data science conferences, but from a cost point view, not all R conferences are the same. Using the R conference site, it’s fairly easy to compare the cost of previous R conferences. I select...
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Visualizing box office revenue by genre

December 3, 2017 | 0 Comments

After having watched Justice League in cinema, I was impressed by all of the special effects and how good they were. I started wondering myself: How much does a movie like that cost? And most importantly, how big is the box-office revenue for this kind of blockbuster? I found an ... [Read more...]

October 2017 Auto Sales Predictions

October 28, 2017 | 0 Comments

Below are predictions for 10-2017 autosales for each auto brand. I modeled monthley car sales by nameplate (eg Camry, Civic, etc), predicted one step ahead forecast and summed by manufacture. The model is a state-space model with trend and seasonality ... [Read more...]

Principal Component Analysis – Unsupervised Learning

October 9, 2017 | 0 Comments

Unsupervised learning is a machine learning technique in which the dataset has no target variable or no response value-\(Y \).The data is unlabelled. Simply saying,there is no target value to supervise the learning process of a learner unlike in supervised learning where we have training examples which have ...
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rrricanes to Access Tropical Cyclone Data

September 26, 2017 | 0 Comments

What is rrricanes Why Write rrricanes? There is a tremendous amount of weather data available on the internet. Much of it is in raw format and not very easy to obtain. Hurricane data is no different. When one thinks of this data they may be inclined to... [Read more...]

tstat: 1-Sample t-Test Statistic

August 13, 2017 | 0 Comments

Name: tstat Type: num Related: tstat2 Description: Computing the 1-sample t-test statistic from randomly-drawn hypothesized mean, sample size, and empirical mean and variance. Solution feedback: Yes Randomization: Random numbers Mathematical notation: Yes Verbatim R input/output: No Images: No Other supplements: No Template: tstat.Rnw tstat.Rmd Raw: (1 random version) ... [Read more...]

switzerland: Knowledge Quiz Question about Switzerland

August 13, 2017 | 0 Comments

Name: switzerland Type: mchoice Related: swisscapital Description: Knowledge quiz question (about Switzerland) with 2 correct and 3 false alternatives which are shuffled randomly in each version of the exercise. Solution feedback: Yes Randomization: Shuffling Mathematical notation: No Verbatim R input/output: No Images: No Other supplements: No Template: switzerland.Rnw switzerland.Rmd ... [Read more...]

bigrquery 0.4.0

June 25, 2017 | 0 Comments

I’m pleased to announce that bigrquery 0.4.0 is now on CRAN. bigrquery makes it possible to talk to Google’s BigQuery cloud database. It provides both DBI and dplyr backends so you can interact with BigQuery using either low-level SQL or high-level dplyr verbs. Install the latest version of bigrquery ... [Read more...]

[Bioc 3.5] NEWS of my BioC packages

May 19, 2017 | 0 Comments

I have 8 packages published within the Bioconductor project. ChIPseeker clusterProfiler DOSE ggtree GOSemSim meshes ReactomePA treeio A new package treeio was included in BioC 3.5 release. ChIPseeker Bug fixed of intron rank and optimized getGeneAnno function. clusterProfiler Defined simplify generics as it was removed from IRanges. enrichGO now supports ont="ALL" ... [Read more...]

Monthly seasonality

May 2, 2017 | 0 Comments

I regularly get asked why I don’t consider monthly seasonality in my models for daily or sub-daily time series. For example, this recent comment on my post on seasonal periods, or this comment on my post on daily data. The fact is, I’ve never seen a time series ... [Read more...]

Upcoming Talk on Monetizing R Packages

May 1, 2017 | 0 Comments

In early June I will be speaking at the San Francisco EARL Conference about my experience monetizing my own open source R packages. This is quite... The post Upcoming Talk on Monetizing R Packages appeared first on AriLamstein.com.
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Realy, Realy Big VARs

April 27, 2017 | 0 Comments

By Gabriel Vasconcelos Overview If you have studied Vector Autorregressive (VAR) models you are probably familiar with the “curse of dimensionality” (CD). It is very frustrating to see how ordinary least squares (OLS) fails to produce reliable results even for … Continue reading →
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Oakland Real Estate Prices (Multi-Tenant)

April 26, 2017 | 0 Comments

Living in the Bay Area has led me to think more and more about real estate (and how amazingly expensive it is here…)  I’ve signed up for trackers on Zillow and Redfin, but the data analyst in me always wants to dive deeper, to look back historically, to quantify, ...
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