Data Analytics Workouts

Photo by Lukas Kloeppel from Pexels In 2016, after reading a Dice Insight article, I downloaded data that had technology professional numbers by zip code, along with density. A recent NY Times article How Big Tech Is Turning New York Into a Silicon Valley Rival prompted me to resurrect the data, decorate it a bit with neighborhood names, and then import it into Google Maps , which was surprisingly easy. The original data is available in Excel .

As part of reading Fundamentals of Deep Learning: Designing Next-Generation Machine Intelligence Algorithms by Nikhil Buduma , I was expecting to work through some of the code examples with my own data, and for the examples, it recommended TensorFlow , which brings up competing alternatives, a primary one being Microsoft Cognitive Toolkit . Over the next few weeks, I will start exploring both in Python, as well as publishing some of the related work. A minor note, the darksigma/Fundamentals-of-Deep-Learning-Book: Code companion to the O'Reilly "Fundamentals of Deep Learning" book is available on GitHub.

As part of a Pluralsight training presentation, Understanding and Applying Logistic Regression , students worked through various exercises, one of which was predicting stock price changes, up or down, on Google, using Google and Spyder closing prices. As an ordered list of actions: Load data - Yahoo financials for each day for 5 years, taking only date and closing price for this analysis Transform sources: Merge sources, change column headings, cast the Date column as DATE type, sort descending Perform logistic regression Create a frame of actual versus predicted changes, and add a column for the correct/incorrect prediction result Find percent correct, on whether the price moved correctly up or down As a result, the lagged Google and SPY prices accurately predict next day prices about 63% of the time. Source data is here . # Clear memory rm(list = ls()) # Set working directory setwd("../Data") getwd() # load data # Data is Yahoo finan...