In this paper we present the 2D Shape Structure database, a public, user-generated dataset of 2D shape decompositions into a hierarchy of shape parts with geometric relationships retained. It is the outcome of a large-scale user study obtained by crowdsourcing, involving over 1200 shapes in 70 shape classes, and 2861 participants. A total of 41953 annotations has been collected with at least 24...

Evaluation plays an important rôle in the advancement of any field. In computer vision, unsupervised segmentation algorithms, although of great interest, often suffer from lack of a well-defined goal and/or explicit ground truth data, thus rendering evaluation difficult. This paper presents a novel method for evaluating such algorithms using a database for which ground truth data is not explici...

Online social networks provide data valuable for a tremendous range of applications. However, the easy-to-use interfaces and low limits of the publication generate various information quality problems, such the user-generated content in such networks. The existence of ill-intentioned users, so-called social spammers, belongs to this environments. The major limitations of the methods detecting s...

This paper presents a new fusion scheme for enhancing the result quality based on the combination of multiple different detectors. We present a study showing the fusion of multiple video analysis detectors like “detecting unattended luggage” in video sequences. One of the problems is the time jitter between different detectors, i.e. typically one system can trigger an event several seconds befo...

Collaborative tagging has become an increasingly popular means for sharing and organizing Web resources, leading to a huge amount of user-generated metadata. These annotations represent quite a few different aspects of the resources they are attached to, but it is not obvious which characteristics of the objects are predominantly described. The usefulness of these tags for finding / re-finding ...

Conventional implicature is conventional in the sense that it is a function of linguistic meaning and context in the way that truth-conditional content is. Nevertheless, although conventional in this sense it makes no contribution to truth-conditions. Rather it introduces a pragmatic presupposition. The delivery of content in implicature is in the mode of the unsaid. How exactly we should under...

Abstract According to a certain conception of language, any sentence can, when used on an occasion, have indefinitely many truth-conditions. Such language gives us reason think that the question whether notion truth has distinctive content cannot be settled by looking solely at predication truth. By focusing predicate ‘true’ trying determine significance truth, we may been in wrong place.

Stephen Read’s work on Bradwardine’s theory of truth is some of the most exciting work on truth and insolubilia in recent years [4, 5]. In this paper, I give models for Read’s formulation of Bradwardine’s theory of truth, and I examine the behaviour of liar sentences in those models. I conclude by examining Bradwardine’s argument to the effect that if something signifies itself to be untrue the...

This is a commentary on the article ‘The rise of post-truth populism in pluralist liberal democracies: challenges for health policy.’ It critically examines two of its key concepts: populism and ‘post truth.’ This commentary argues that there are different types of populism, with unclear links to impacts, and that in some ways, ‘post-truth’ has resonances with arguments advanced in the period a...