# Effective Floating Strategies

At DocEng ‘17 the ACM Symposium on Document Engineering Frank presented a paper on “Effective Floating Strategies” that discusses globally optimizing pagination strategies for documents containing floats. The paper was one of the runner-ups for the “ACM Best Paper Award” of the conference.

The full paper can be downloaded from the ACM Digital library through a link on the Publications page.

### Abstract of the Paper

This paper presents an extension to the general framework for globally optimized pagination described in Mittelbach (2016). The extended algorithm supports automatic placement of floats as part of the optimization. It uses a flexible constraint model that allows for the implementation of typical typographic rules that can be weighted against each other to support different application scenarios.

By “flexible” we mean that the rules of typographic presentation of the content of a document element are not fixed—but neither are they completely arbitrary; also, some of these rules are absolute whereas others are in the form of preferences.

It is easy to see that without restrictions the float placement possibilities grow exponentially if the number of floats has a linear relation to the document size. It is therefore important to restrict the objective function used for optimization in a way that the algorithm does not have to evaluate all theoretically possible placements while still being guaranteed to find an optimal solution.

Different objective functions are being evaluated against typical typographic requirements in order to arrive at a system that is both rich in its expressiveness of modeling a large class of pagination applications while at the same time is capable of solving the optimization problem in an acceptable time frame for realistic input data.