WSJ.com: “Governments are increasingly relying on machine learning and data analytics to analyze troves of data as they seek to detect tax evasion, respond to taxpayers’ questions and make themselves more efficient…The Internal Revenue Service is designing machine-built graphs to plot the relationships among participants in business deals, giving auditors a new tool to analyze transactions and detect tax avoidance. The agency is using artificial intelligence to study notes that agency employees take when fielding questions from taxpayers and testing which combinations of formal notices and contacts are most likely to get a taxpayer who owes money to send a check. The IRS scours data from inside and outside the agency for its compliance initiatives, such as a recent effort to identify thousands of high-income individuals who didn’t file returns. The government is now sending tax collectors to knock on their doors…”