Blog Archives

Clustering

June 12, 2017
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Clustering

Hello, everyone! I’ve been meaning to get a new blog post out for the past couple of weeks. During that time I’ve been messing around with clustering. Clustering, or cluster analysis, is a method of data mining that groups similar observations together. Classification and clustering are quite alike, but clustering is more concerned with exploration … Continue reading Clustering

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Ridge Regression and the Lasso

May 23, 2017
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Ridge Regression and the Lasso

In my last post Which linear model is best? I wrote about using stepwise selection as a method for selecting linear models, which turns out to have some issues (see this article, and Wikipedia). This post will be about two methods that slightly modify ordinary least squares (OLS) regression – ridge regression and the lasso. … Continue reading Ridge...

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Which linear model is best?

May 10, 2017
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Which linear model is best?

Recently I have been working on a Kaggle competition where participants are tasked with predicting Russian housing prices. In developing a model for the challenge, I came across a few methods for selecting the best regression model for a given dataset. Let’s load up some data and take a look. ## 47 6 ## … Continue reading Which...

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Using R as a GIS

April 22, 2017
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Using R as a GIS

In real estate, spatial data is the name of the game. Countless other domains utilize the power of this data, which is becoming more prevalent by the day. In this post I will go over a few simple, but powerful tools to get you started using using geographic information in R. GISTools provides an easy-to-use

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Take your data frames to the next level.

March 30, 2017
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Take your data frames to the next level.

  While finishing up with R-rockstar Hadley Wickham’s book (Free Book – R for Data Science), the section on model building elaborates on something pretty cool that I had no idea about – list columns. Most of us have probably seen the following data frame column format: df

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Mapping Housing Data with R

March 16, 2017
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Mapping Housing Data with R

What is my home worth?  Many homeowners in America ask themselves this question, and many have an answer.  What does the market think, though?  The best way to estimate a property’s value is by looking at other, similar properties that have sold recently in the same area – the comparable sales approach.  In an effort … Continue reading Mapping...

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R Weekly

February 20, 2017
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R Weekly

During my Monday morning ritual of avoiding work,  I found this publication that is written in R, for people who use R – R Weekly.  The authors do a pretty awesome job of aggregating useful, entertaining, and informative content about what’s happening surrounding our favorite programming language.  Check it out, give the authors some love on GitHub, and leave … Continue reading R...

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Creating a Mailing List in QGIS and R

February 15, 2017
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Creating a Mailing List in QGIS and R

My day job as a real estate agent requires a myriad of skills, ranging from accounting to negotiation to business analysis.  Frequently (about every three months) I whip out my marketing skills to advertise my business.  This time I decided to send out postcards to an entire neighborhood in which I had sold homes recently. … Continue reading Creating...

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Shiny Example – NHL Players

January 10, 2017
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Shiny Example – NHL Players

Here’s a little visualization app I made a couple of months back which explores hockey players in the NHL during the 2015 – 2016 season.  As we get closer to the end of the regular season this year I’ll take  a look at 2017’s players. See the app here. See the code behind it here.

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Free Book – R for Data Science

January 6, 2017
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Free Book – R for Data Science

I just started reading this book today: R for Data Science by Hadley Wickham.  It’s free (as of right now) and written completely in R!  Click here to check it out; I highly recommend it.

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