373 research outputs found
Evaluating Continual Test-Time Adaptation for Contextual and Semantic Domain Shifts
In this paper, our goal is to adapt a pre-trained convolutional neural
network to domain shifts at test time. We do so continually with the incoming
stream of test batches, without labels. The existing literature mostly operates
on artificial shifts obtained via adversarial perturbations of a test image.
Motivated by this, we evaluate the state of the art on two realistic and
challenging sources of domain shifts, namely contextual and semantic shifts.
Contextual shifts correspond to the environment types, for example, a model
pre-trained on indoor context has to adapt to the outdoor context on CORe-50.
Semantic shifts correspond to the capture types, for example a model
pre-trained on natural images has to adapt to cliparts, sketches, and paintings
on DomainNet. We include in our analysis recent techniques such as
Prediction-Time Batch Normalization (BN), Test Entropy Minimization (TENT) and
Continual Test-Time Adaptation (CoTTA). Our findings are three-fold: i)
Test-time adaptation methods perform better and forget less on contextual
shifts compared to semantic shifts, ii) TENT outperforms other methods on
short-term adaptation, whereas CoTTA outpeforms other methods on long-term
adaptation, iii) BN is most reliable and robust. Our code is available at
https://github.com/tommiekerssies/Evaluating-Continual-Test-Time-Adaptation-for-Contextual-and-Semantic-Domain-Shifts
"Are you telling me to put glasses on the dog?'' Content-Grounded Annotation of Instruction Clarification Requests in the CoDraw Dataset
Instruction Clarification Requests are a mechanism to solve communication
problems, which is very functional in instruction-following interactions.
Recent work has argued that the CoDraw dataset is a valuable source of
naturally occurring iCRs. Beyond identifying when iCRs should be made, dialogue
models should also be able to generate them with suitable form and content. In
this work, we introduce CoDraw-iCR (v2), which extends the existing iCR
identifiers fine-grained information grounded in the underlying dialogue game
items and possible actions. Our annotation can serve to model and evaluate
repair capabilities of dialogue agents.Comment: Work in progres
Ratings of name agreement and semantic categorization of 247 colored clipart pictures by young German children
Developmental and longitudinal studies with children increasingly use pictorial stimuli in cognitive, psychologic,
and psycholinguistic research. To enhance validity and comparability within and across those studies, the use of
normed pictures is recommended. Besides, creating picture sets and evaluating them in rating studies is very time
consuming, in particular regarding samples of young children in which testing time is rather limited. As there is
an increasing number of studies that investigate young German children's semantic language processing with
colored clipart stimuli, this work provides a first set of 247 colored cliparts with ratings of German native
speaking children aged 4 to 6 years. We assessed two central rating aspects of pictures: Name agreement (Do
pictures elicit the intended name of an object?) and semantic categorization (Are objects classified as members of
the intended semantic category?). Our ratings indicate that children are proficient in naming and even better in
semantic categorization of objects, whereas both seems to improve with increasing age of young childhood.
Finally, this paper discusses some features of pictorial objects that might be important for children's name
agreement and semantic categorization and could be considered in future picture rating studies
Encounters with Data: Thinking Critically about Context and Presentation in Statistics and Visualizations
Workshop at the Quasicon 2016 Conference, University of Michigan School of Information, Ann Arbor, MIBring your laptop or tablet! This hands-on panel will start by outlining rules of thumb for examining the context of data and statistics, and for presenting your data in simple and effective ways. Using these rules of thumb, we will encourage participants to put their critical thinking skills into practice analyzing statistics and data visualizations. Participants will then have a chance to create their own data visualizations. In general, libraries have a growing role in helping users interpret and work with the data in their lives. This panel will guide participants in learning how to navigate data on their own and help their patrons with their data needs.https://deepblue.lib.umich.edu/bitstream/2027.42/146733/1/2016Quasicon_EncountersWithData.pdfDescription of 2016Quasicon_EncountersWithData.pdf : Slide
Photo2ClipArt: Image Abstraction and Vectorization Using Layered Linear Gradients
International audienceWe present a method to create vector cliparts from photographs. Our approach aims at reproducing two key properties of cliparts: they should be easily editable, and they should represent image content in a clean, simplified way. We observe that vector artists satisfy both of these properties by modeling cliparts with linear color gradients, which have a small number of parameters and approximate well smooth color variations. In addition, skilled artists produce intricate yet editable artworks by stacking multiple gradients using opaque and semi-transparent layers. Motivated by these observations, our goal is to decompose a bitmap photograph into a stack of layers, each layer containing a vector path filled with a linear color gradient. We cast this problem as an optimization that jointly assigns each pixel to one or more layer and finds the gradient parameters of each layer that best reproduce the input. Since a trivial solution would consist in assigning each pixel to a different, opaque layer, we complement our objective with a simplicity term that favors decompositions made of few, semi-transparent layers. However, this formulation results in a complex combinatorial problem combining discrete unknowns (the pixel assignments) and continuous unknowns (the layer parameters). We propose a Monte Carlo Tree Search algorithm that efficiently explores this solution space by leveraging layering cues at image junctions. We demonstrate the effectiveness of our method by reverse-engineering existing cliparts and by creating original cliparts from studio photographs
Enhancing Access To Classic Children’s Literature
Project Gutenberg is a digital library that contains mostly public domain books, including a large number of works that belong to children’s literature. Many of these classic books are offered in a text-only format, which does not make them appealing for children to read. Moreover, stories that were written for children one hundred or more years ago, might not be readily understandable by children today due to diverging vocabularies and experiences. In this poster, we describe ongoing work to enhance the access to this children’s literature repository. Firstly, we attempt to automatically illustrate the children’s literature. Secondly, we link the text to background information to increase understanding and ease of reading. The overall motivation of this work is to make such publicly available books more easily accessible to children by making them more entertaining and engaging
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