There are few proposals to improve the interactivity and control of wave function collapse (WFC) in a mixed-initiative setting. Moreover, most WFC algorithm variants operate on an simple, unstructured set of tiles. This limitation on the level of control provided to designers hampers their creative work in various ways. We propose Hierarchical Semantic WFC, a generalized approach to WFC that organizes its tile-set into a hierarchy akin to a taxonomy induced by the relation 'consists-of'. In such a hierarchical structure, abstract tiles (i.e. non-leaf nodes) can represent the first sketchy intentions of a designer (e.g. forest, urban, desert,...) This allows a designer to interactively collapse a given area into abstract tiles, while subsequently, (and repeatedly, if desired) WFC can resolve each area into a variety of particular instances, by further collapsing it into (a valid combination of) its children tiles (whether leaves or not). We identify how this subtle tile-set change affects the whole WFC algorithm, describe a number of novel exploratory and interactive functions that this enables, and showcase these with a variety of examples generated with our prototype implementation. We conclude that these new mixed-initiative content generation methods can considerably reduce design iteration times and improve the assistance given to designers in expressing their creative intent.

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In this demo we present Scriptoria, an online crowdsourcing system to tackle the complex transcription process of classical orchestral scores. The system’s requirements are based on experts’ feedback from classical orchestra members. The architecture enables an end- to-end transcription process (from PDF to MEI) using a scalable microtask design. Reliability, stability, task and UI design were also evaluated and improved through Focus Group Discussions. Finally, we gathered valuable comments on the transcription process it- self alongside future additions that could greatly enhance current practices in their field. @en

Working in teams is a common approach to solving problems. However, new teams often suffer from a form of cold start, by which individual members are not yet comfortable expressing their ideas. Previous work has shown that ideation can be stimulated by promoting a sense of psychological safety among team members and instilling an ambiance of openness, and that games are helpful at establishing such social bonds. However, most such games only partially target psychological safety or openness, and often rely on the expertise of a facilitator, who may be unavailable for many teams. The ubiquity of mobile platforms opens up many opportunities for overcoming such drawbacks. We developed the mobile game Grapplenauts, a novel serious game directly focused on psychological safety and openness, that generates a beneficial atmosphere for ideation and does not require any facilitator. In Grapplenauts, team players have to gradually work together towards a team-wide goal, first in pairs and then among pairs, which has shown to be quite successful in promoting communication and collaboration. Play testing has shown that Grapplenauts was perceived as a fun, engaging and challenging collaborative game. In addition, results of a preliminary user study are cautiously optimistic about the success of the game in improving the perceived atmosphere within
newly-formed teams.@en

League of Lasers is a motion-based game where two teams compete in a mix between football and Pong [2]. Players use `virtual mirrors' to try to guide a laser pulse towards the opponent team's target. The game aims at stimulating interaction between players by making cooperation a vital part of the gameplay, while having them physically move near each other. The game tracks the physical movement of players as the main control actions. A demonstration trailer can be found here: https://goo.gl/v7mu6k @en