SemAxis: A Lightweight Framework to Characterize Domain-Specific Word Semantics Beyond Sentiment

Because word semantics can substantially change across communities and contexts, capturing domain-specific word semantics is an important challenge. Here, we propose SEMAXIS, a simple yet powerful framework to characterize word semantics using many semantic axes in word- vector spaces beyond sentiment. We demonstrate that SEMAXIS can capture nuanced semantic representations in multiple online communities. We also show that, when the sentiment axis is examined, SEMAXIS outperforms the state-of-the-art approaches in building domain-specific sentiment lexicons.Comment: Accepted in ACL 2018 as a full pape

Game Engine Conventions and Games that Challenge them: Subverting Conventions as Metacommentary

Consumer-grade game engines such as Multimedia Fusion and RPG Maker have dramatically extended the reach of digital games as a medium. They have also spawned online communities, where conventions and canons of using these tools have evolved. These partly stem from the functional constraints of the game engines themselves and are institutionalized through manuals, examples, tutorials, and games made with them. However, some members of game engine communities actively seek to challenge these conventions by experimenting with the engines and finding ingenious ways to put them to unexpected uses. Such experiments can be regarded as a form of metacommentary on the engines’ capabilities and limitations. While arguably impractical and inefficient, they enrich the scope of what can be done with the engine and can contribute to its further development

Beyond capital ideals : restoring banking stability

The authors examine why emerging markets, in particular, are susceptible to and affected by financial difficulties. They show that these difficulties have a richer, more complex structure than they are sometimes believed to have - with marked information asymmetries and substantial volatility. The sources of heightened regulatory failure in emerging markets in recent years include the volatility of real and nominal shocks, the difficulty of operating in uncharted territory after financial liberalization and other changes in regime, and the political pressures that can inhibit the enforcement of prudential regulation. The authors discuss what stronger regulation can and cannot accomplish, as well as options to improve the incentive structure for bankers, regulators, and other market participants. They probe the shortcomings of a regulatory paradigm that relies mainly on supervised capital adequacy and discuss the possible intermittent application of supplementary"blunt instruments"as an interim solution while longer-term reforms are being put in place. Certain well-worn messages remain valid, but are respected more in theory than in practice. There would be fewer problems, the authors say, if there were: 1) more diversification; 2) more balanced financial structures (for example, as between debt and equity); 3) more foreign banks in emerging markets'financial systems; and 4) better enforcement of both contracts and regulations. Participants in the financial sector will constantly try to get around rules that limit their profitability, so regulation must be seen as an evolutionary struggle. Prevention of financial failure is not costless, and a heavy repressive hand is not warranted. But a richer regulatory palette can be used to protect financial systems more successfully against crisis while preserving the systems'growth-enhancing effectiveness.Environmental Economics&Policies,Payment Systems&Infrastructure,Financial Intermediation,Banks&Banking Reform,Financial Crisis Management&Restructuring,Economic Theory&Research,Banks&Banking Reform,Financial Intermediation,Financial Crisis Management&Restructuring,Environmental Economics&Policies

Shipwreck and salvage in the tropics: the case of HMS Thetis, 1830–1854

In 1830, the British frigate HMS Thetis was wrecked at Cabo Frio, on the Brazilian coast. A British naval force was subsequently despatched to undertake a major salvage operation which lasted for well over a year. The substantial textual and visual archive associated with the case of the Thetis raises wider questions about the entanglement of naval, scientific, artistic, financial and legal concerns in an age of British maritime expansion. If the loss of such a ship brought into question the capacity of the British to act at a distance, it also provided an opportunity to mend and strengthen the networks of power and knowledge. The sources of error exposed by the disaster were to be subject to investigation by numerous authorities, including hydrographers keen to refine their charts and sailing directions and Fellows of the Royal Society seeking to advance the claims of science, as well as the Admiralty itself, in the judicial setting of a court martial. We focus here especially on narratives of the wreck and the salvage of the Thetis, and the significance of their repeated tellings of the story after the event; and on the evidential and representational status of the visual images of the scene in sketches, maps, charts, diagrams, engravings and paintings

Disruptive Innovations and Disruptive Assurance: Assuring Machine Learning and Autonomy

Autonomous and machine learning-based systems are disruptive innovations and thus require a corresponding disruptive assurance strategy. We offer an overview of a framework based on claims, arguments, and evidence aimed at addressing these systems and use it to identify specific gaps, challenges, and potential solutions