Getting started with topic modelling - theory

These are notes that I put together in the process of trying to understand how topic modelling works with a view to applying it to Australia’s Hansard. There are undoubtedly mistakes and aspects that are unclear. Please get in touch if you have any suggestions. Overview Each statement in Hansard needs to be classified by its topic. Sometimes Hansard includes titles that make the topic clear. But not every statement has a title and the titles do not always define topics in a well-defined and consistent way.

Getting started with LaTeX

Thank you to Janet Bradly and Maria Racionero for their support of this workshop. These notes are based on ones prepared by Zac Cranko and I for a presentation in 2015 and those that I put together for a 2016 presentation. Zac’s work is used with permission. Introduction LaTeX makes it easier to produce papers that look great, but it can be overwhelming at the start. These notes help you get up-and-running with LaTeX.

Reproducing a Grattan Institute map

Thank you to Monica for her helpful edits. Geoffrey Liu found an error in how I deal with the postcodes data that I haven’t fixed yet. Introduction The Grattan Institute is an Australian think tank that produces reports about public policy. Last week they released ‘Regional patterns of Australia’s economy and population’. That report looks into the differences between geographic areas across various economic and demographic variables. It includes interactive maps made using Carto.

Getting started with Blogdown

Thank you to Minhee Chae and Peter Gibbard for helpful comments. Introduction Blogdown is a package that allows you to make websites (not just blogs, notwithstanding its name) largely within R Studio. It builds on Hugo, which is a popular tool for making websites. Blogdown lets you freely and quickly get a website up-and-running. It is easy to add content from time-to-time. It integrates with R Markdown which lets you easily share your work.

Mapping the 2016 Australian election polling place results

The note that follows introduces Australia’s political system, and then details the process of downloading and merging first-preference votes by polling place, and then plotting it on an interactive map. Australia’s political system In 2016 Australia’s federal government was determined by the outcomes of elections in 150 divisions which each elected one member to the lower house. The Liberal/National Coalition won 76 seats which allowed it to form a majority government; while the Labor party won 69 seats to form the Opposition; the Greens and the Nick Xenophon Team each won one seat; and there were two Independent members (Andrew Wilkie and Cathy McGowan).

Greitens reports for duty

Eric Greitens may be the Republican Übermensch. Rhodes Scholar, Navy SEAL officer, husband and father. He’s now the Republican candidate in the Missouri gubernatorial election. And one suspects that being a governor could just be a step for Greitens. While 2016 will always be the year that US politics descended to the gutter, it could also be the year that the next Republican president begins his political career. It is easy to imagine Eric Greitens as a senior at Duke University as he entered the boxing ring for his Golden Gloves bout.

Professional Amateurs

Despite many unforced errors Hillary Clinton has won the Democratic nomination and polls suggest she will beat Donald Trump. But her campaign continues to make unforced errors. There was plenty of evidence of an amateur nature to what should be a professional campaign at a recent rally for Clinton’s running mate, Tim Kaine, in Grand Rapids, Michigan. The wait for Tim Kaine was around three hours. That’s not unusual. But it meant the campaign had three hours in which no one was able to walk away or claim they had somewhere else to be.

Trump, revisited

(Comment 4 July 2017: Like much of my writing about Trump, the opinions here haven’t aged too well. Nonetheless, I learnt a lot from writing this and later from thinking about why I went wrong.) A few notes and photos from a Trump rally in Indiana earlier this week. The focus is on whether Trump ‘could’ win the election in November. In the interest of transparency, it’s worth acknowledging that I didn’t think Trump could win the Republican nomination.

Broader thinking needed on the Australian budget

The Treasury Secretary, and many others, bemoan the wasted years of the mining boom. Most agree that Australia should have more to show for what was the most significant boom since Federation. But the boom is over. And a fixation on budget surpluses means that we are missing an opportunity to make up for it. Australia’s credit rating is a strength that we should take advantage of. The Commonwealth should be borrowing to fund infrastructure investment.

Notes and photos from Iowa

Sincere thanks to Bec, Callam, Monica, and Owen for reading and improving these notes. Bernie Sanders seems quite reasonable for a revolutionary. An energetic man of 74, he spoke for an hour in Perry, Iowa, to a room of 300 from only a few lines of handwritten notes, and then fielded half an hour of questions. He does not have the same aura that surrounded, then, Senator Obama in his own Iowa battle with, then, Senator Clinton in 2008 say those who saw both.