438 research outputs found
The Impact of Gamification Design on the Success of Health and Fitness Apps
Gamification has been increasingly employed in health-related apps in recent years. However, the effect of gamification design on the success of health and fitness apps remains unknown and has not been investigated before. This study attempts to identify what gamification elements are frequently used in the design of health and fitness apps and to empirically quantify their effects on app downloads and user ratings of these apps. We construct a rich dataset that includes information about the daily downloads, ratings and gamification design elements of 2,462 health and fitness apps on the Apple App Store. Our sample contains 924 paid apps and 1,538 free apps. This study contributes to both the gamification and mobile app literatures and provides important implications for app developers who intend to adopt gamification in mobile app design
IDEA: Interactive DoublE Attentions from Label Embedding for Text Classification
Current text classification methods typically encode the text merely into
embedding before a naive or complicated classifier, which ignores the
suggestive information contained in the label text. As a matter of fact, humans
classify documents primarily based on the semantic meaning of the
subcategories. We propose a novel model structure via siamese BERT and
interactive double attentions named IDEA ( Interactive DoublE Attentions) to
capture the information exchange of text and label names. Interactive double
attentions enable the model to exploit the inter-class and intra-class
information from coarse to fine, which involves distinguishing among all labels
and matching the semantical subclasses of ground truth labels. Our proposed
method outperforms the state-of-the-art methods using label texts significantly
with more stable results.Comment: Accepted by ICTAI202
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CELLCOUNTER: Novel Open-Source Software for Counting Cell Migration and Invasion In Vitro
Transwell Boyden chamber based migration/invasion assay is a simple and extensively used approach for the characterization of cell motility in vitro. Cell motility is quantified by counting the number of cells that pass through the filter membrane. The counting is usually performed manually, which is laborious and error prone. We have therefore developed CELLCOUNTER, an application that is capable of recognizing and counting the total number of cells through an intuitive graphical user interface. The counting can be performed in batch, and the counting results can be visualized and further curated manually. CELLCOUNTER will be helpful in streamlining the experimental process and improving the reliability of the data acquisition
ADBench: Anomaly Detection Benchmark
Given a long list of anomaly detection algorithms developed in the last few
decades, how do they perform with regard to (i) varying levels of supervision,
(ii) different types of anomalies, and (iii) noisy and corrupted data? In this
work, we answer these key questions by conducting (to our best knowledge) the
most comprehensive anomaly detection benchmark with 30 algorithms on 57
benchmark datasets, named ADBench. Our extensive experiments (98,436 in total)
identify meaningful insights into the role of supervision and anomaly types,
and unlock future directions for researchers in algorithm selection and design.
With ADBench, researchers can easily conduct comprehensive and fair evaluations
for newly proposed methods on the datasets (including our contributed ones from
natural language and computer vision domains) against the existing baselines.
To foster accessibility and reproducibility, we fully open-source ADBench and
the corresponding results.Comment: NeurIPS 2022. All authors contribute equally and are listed
alphabetically. Code available at https://github.com/Minqi824/ADBenc
Fast Association Tests for Genes with FAST
Gene-based tests of association can increase the power of a genome-wide association study by aggregating multiple independent effects across a gene or locus into a single stronger signal. Recent gene-based tests have distinct approaches to selecting which variants to aggregate within a locus, modeling the effects of linkage disequilibrium, representing fractional allele counts from imputation, and managing permutation tests for p-values. Implementing these tests in a single, efficient framework has great practical value. Fast ASsociation Tests (Fast) addresses this need by implementing leading gene-based association tests together with conventional SNP-based univariate tests and providing a consolidated, easily interpreted report. Fast scales readily to genome-wide SNP data with millions of SNPs and tens of thousands of individuals, provides implementations that are orders of magnitude faster than original literature reports, and provides a unified framework for performing several gene based association tests concurrently and efficiently on the same data. Availability: https://bitbucket.org/baderlab/fast/downloads/FAST.tar.gz, with documentation at https://bitbucket.org/baderlab/fast/wiki/Hom
Where Have All the Interactions Gone? Estimating the Coverage of Two-Hybrid Protein Interaction Maps
Yeast two-hybrid screens are an important method for mapping pairwise physical interactions between proteins. The fraction of interactions detected in independent screens can be very small, and an outstanding challenge is to determine the reason for the low overlap. Low overlap can arise from either a high false-discovery rate (interaction sets have low overlap because each set is contaminated by a large number of stochastic false-positive interactions) or a high false-negative rate (interaction sets have low overlap because each misses many true interactions). We extend capture–recapture theory to provide the first unified model for false-positive and false-negative rates for two-hybrid screens. Analysis of yeast, worm, and fly data indicates that 25% to 45% of the reported interactions are likely false positives. Membrane proteins have higher false-discovery rates on average, and signal transduction proteins have lower rates. The overall false-negative rate ranges from 75% for worm to 90% for fly, which arises from a roughly 50% false-negative rate due to statistical undersampling and a 55% to 85% false-negative rate due to proteins that appear to be systematically lost from the assays. Finally, statistical model selection conclusively rejects the Erdös-Rényi network model in favor of the power law model for yeast and the truncated power law for worm and fly degree distributions. Much as genome sequencing coverage estimates were essential for planning the human genome sequencing project, the coverage estimates developed here will be valuable for guiding future proteomic screens. All software and datasets are available in Datasets S1 and S2, Figures S1–S5, and Tables S1−S6, and are also available from our Web site, http://www.baderzone.org
(E)-2,3-Bis(4-methoxyphenyl)acrylic acid
In the title molecule, C17H16O4, the angle between the aromatic ring planes is 69.1 (6)°. The crystal structure is stabilized by intermolecular O—H⋯O hydrogen bonds; molecules related by a centre of symmetry are linked to form inversion dimers
Green finance, renewable energy investment, and environmental protection: empirical evidence from B.R.I.C.S. countries
Environmental degradation has become a severe concern for the
globe; therefore, policymakers in emerging economies are trying to
meet the environmental standards. Nowadays, economies have
shifted their energy pattern from non-renewable to renewable
energy (R.E.U.), but its cost is too high. Undoubtedly, the financial
sector also performs well in facilitating such green activities.
Therefore, the current study investigates the role of R.E.U. and
green finance in environmental quality and collects the data for
B.R.I.C.S. economies from 2000 to 2018. The study uses quantile
regressions and other advanced techniques to deal with the problems
of cross-sectional dependence (C.S.D.) and heterogeneity. The
estimated outcomes show that green finance, R.E.U. consumption,
and technical innovations perform well in securing the environment
by reducing carbon emissions. Likewise, the environmental
quality in selected economies is deteriorating due to the rise in
non-R.E.U. consumption, economic progress, F.D.I., and trade openness.
Therefore, it is time to reshape the local, national and regional
growth policies concerning a green investment that can secure our
environment. Also, this study proposes future pathways for green
finance and other factors relevant to a sustainable environment
ADGym: Design Choices for Deep Anomaly Detection
Deep learning (DL) techniques have recently found success in anomaly
detection (AD) across various fields such as finance, medical services, and
cloud computing. However, most of the current research tends to view deep AD
algorithms as a whole, without dissecting the contributions of individual
design choices like loss functions and network architectures. This view tends
to diminish the value of preliminary steps like data preprocessing, as more
attention is given to newly designed loss functions, network architectures, and
learning paradigms. In this paper, we aim to bridge this gap by asking two key
questions: (i) Which design choices in deep AD methods are crucial for
detecting anomalies? (ii) How can we automatically select the optimal design
choices for a given AD dataset, instead of relying on generic, pre-existing
solutions? To address these questions, we introduce ADGym, a platform
specifically crafted for comprehensive evaluation and automatic selection of AD
design elements in deep methods. Our extensive experiments reveal that relying
solely on existing leading methods is not sufficient. In contrast, models
developed using ADGym significantly surpass current state-of-the-art
techniques.Comment: NeurIPS 2023. The first three authors contribute equally. Code
available at https://github.com/Minqi824/ADGy
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