Adam Blomberg, PhD

Data Science in NYC

I’m a experimental nuclear physicist turned data scientist. I have a history of using computer simulations for product and experimental optimizations. I’m currently working at General Assembly in New York City, teaching their full-time Data Science Immersive focusing on machine learning in Python, statistics, and SQL.

Posts

Bilboard top music chart analysis

Recently, I took a look at the Billboard top 100 most popular songs from the year 2000. The bulk of this dataset was a series of columns containing each song’s rank in the charts each week after it entered. In the process of cleaning this up and condensing the data into a single column, I came across some interesting trajectory templates: “fads,” “smash hits,” and “resurgent hits.”

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Titanic survival predictions

I’ve put together a small analysis to demonstrate how we can create, tune, and evaluate models. I looked at the dataset of Titanic passengers and attempted to predict their survival outcomes based on information from the passenger list. I used a Logistic Regression, kNN, Decision Tree, and Random Forest model. The hyperparameters for each were tuned across a grid space that allowed for full computation in less than 5 minutes.

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US Salary Summary

Indeed has published Data Scientist salary information on their site. The publish data averaged over the entire country, for many (~35) individual states, and for several cities in each of those states. I am looping over each page in their location list to collect information on the salary average and range and an indication of the size of the market in each location.

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Predicting successful movies on IMDB

To help better assess which movies to bring into the Netflix streaming catalog, I have pulled data for the best and worst movies in the IMDB database and created two models from that data to predict ratings for other movies. A total of 350 records were downloaded: the top 250, and the bottom 100.

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Housing market analysis

We have a data set of real estate prices from Aimes, Iowa. Our goal is to provide a model to predict prices using a subset of the columns to be able to reduce the size of the database the company is required to store. We are also interested in providing descriptive statistics for the market, specifically which neighborhoods have many sales and high prices. Finally, we are interested in describing how this data has changed over time.

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Post Jupyter notebooks to your GitHub blog

Info to help convert the Jupyter notebooks we use in class into blog posts for your github blog. Manual conversion instructions are given for one-off posts, as well as detials to make a bash alias to automate the conversion process, move the files, and update your blog in one fell swoop.

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Notebook conversion example

A quick example of how the conversion tool can convert an Jupyter notebook into markdown files and associated images. I demonstrate how common items like code blocks and inline images work well, while other features (namely Latex equations) do not.

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Exploring US SAT scores

I took a look at SAT score summaries by US state. I found that there is a lot of variation in the proportion of students in each state who take the SAT test, and also correlations between that rate and the testing scores. Finally, I made some choropleths to visualize the spatial distribution of scores across the country.

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Custom choropleths in Tableau

We worked with some data about SAT scores and test taking rates in every state over the last week. I was able to use Tableau with some custom mapping options to keep the image looking professional.

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Open Github repo from terminal

I was chatting with Andrew this morning, and he had the great idea that it would be awesome to open our GitHub repo pages from the CLI. We hashed out a rough draft this morning, but I’ve cleaned it up and bit and thought I would share here.

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