BitcoinNow - Realtime Bitcoin Info On Your Menubar This app lets you see realtime bitcoin price information in your menu bar that runs at the top of your OS X screen. Keep track of bitcoin in the exchange of your choice any time of the day and have peace of mind. You have the option of choosing the exchange ( Coinbase /…

## StockNow - Realtime Stock Info On Your Menubar

StockNow - Realtime Stock Info On Your Menubar This app lets you see realtime stock information in your menu bar that runs at the top of your OS X screen. Keep track of a stock of your choice any time of the day and have peace of mind. You have the option of choosing the stock, frequency of updates (up…

## GroupMeDF - Intelligently Organize PDFs

GroupMeDF - Intelligently Organize PDFs This app takes a directory with PDFs and outputs a corresponding directory that contains the same PDFs labeled with groupings based on the text of the PDFs. It also supports renaming of PDFs based on some of the initial text so that your research papers don't have to be named by number. This is…

## Introduction to Bayesian Parameter Estimation and Censored Data (Python Implementation)

In the previous post Bayesian parameter estimation was introduced in the context of right censored data. The probability distribution for the belief of a given estimate of the mean of the underlying distribution was explicitly derived. In this post the estimate will be implemented on a trial dataset generated and analyzed in python using the numpy and matplotlib libraries. The goal…

## Introduction to Bayesian Parameter Estimation and Censored Data (Theory)

What is Bayes Theorem? Bayes theorem can provide a framework for parameter estimation that allows for the estimation of parameters in a flexible way that starts from simple principles. This is appealing for people who do not enjoy memorizing formulas and deriving an estimate from first principles. The model building all starts from the following formula called Bayes theorem similar to how…

## Text Mining : Using support vector machines (SVM) to classify text in online job listings

The task of using text data to make complex decisions has become important as the availability of text data has increased even further through public APIs like the Twitter REST API. In this post the focus will be on support vector machines (SVM) for this task. SVMs have a rich history in text classification tasks and have advantages such as…

## Measuring the defensive effectiveness of NBA teams?

Quantifying defense in basketball has been a sticky situation for analyst and fans for some time. In this post I will introduce a simple measure of the effectiveness of the defense of a given NBA team and use this measure to show the "defensive bias" of teams across the league for 2008-2009 and 2010-2011 NBA seasons. Hollinger's defensive effectiveness presents a…

## Who is receiving items acquisitioned from DoD Excess Property Program 1033 and what is the cost?

There has been a decent amount of public discussion about the trend towards the militarization of local police departments. A big contributor for this trend has been through items acquisitioned under the National Defense Authorization Act which enables DoD program 1033. This program enables excess military items to be provided to local police departments. MuckRock openly provides data on these…

## A look at height and income inequality in different countries of the world

There has been a lot discussion on the topic of income inequality over the last few months in the media and elsewhere. When the average person imagines a country with more egalitarian distributions of income and extensive safety nets of social programs they picture countries who are also known as being fairly tall such as Norway or Netherlands. Is this a coincidence…

## Power Laws : Similarities in Reddit’s voting system and earthquakes.

A power law is the description for a variable which scales with the following function.This mathematical function has many interesting properties but for now we will simply describe the mathematical function and interesting cases where this function is observed. As observed by the last equation power laws will look linear in log-log axes. Many real world systems follow a power…