7 research outputs found
Retweeting: its linguistic and epistemic value
This paper analyses the communicative and epistemic value of retweeting (and more generally of reposting content on social media). Against a naïve view, it argues that retweets are not acts of endorsement, motivating this diagnosis with linguistic data. Retweeting is instead modelled as a peculiar form of quotation, in which the reported content is indicated rather than reproduced. A relevance-theoretic account of the communicative import of retweeting is then developed, to spell out the complex mechanisms by which retweets achieve their communicative goals. The last section outlines the epistemic threats posed by the increasing prevalence of retweeting on social media, linking them to the low reputational, cognitive, and practical costs linked to this emerging form of communication
No-reference image and video quality assessment: a classification and review of recent approaches
The field of perceptual quality assessment has gone through a wide range of
developments and it is still growing. In particular, the area of no-reference
(NR) image and video quality assessment has progressed rapidly during the last
decade. In this article, we present a classification and review of latest
published research work in the area of NR image and video quality assessment.
The NR methods of visual quality assessment considered for review are
structured into categories and subcategories based on the types of
methodologies used for the underlying processing employed for quality
estimation. Overall, the classification has been done into three categories,
namely, pixel-based methods, bitstream-based methods, and hybrid methods of the
aforementioned two categories. We believe that the review presented in this
article will be helpful for practitioners as well as for researchers to keep
abreast of the recent developments in the area of NR image and video quality
assessment. This article can be used for various purposes such as gaining a
structured overview of the field and to carry out performance comparisons for
the state-of-the-art methods