210 research outputs found
Literature Review of Measurements of Personality Traits across Cultures
After more than one century’s exploration from academia, both researches and measurements related to human personality traits have been fully developed with the effort of many researchers. Big Five, as one of the most popular assessments for personality traits, was formed based on the etic approach assuming there should be a universal or generalizable measurement for personality traits across cultures. However, with the increasing impact from different cultures as well as in-depth understanding from researchers, more doubts of etic approach on measuring personality were proposed. Emic approach stressing the significance of specific-cultural method in anthropological research has been accordingly investigated. The following Big Six and Big Seven scales were constructed under this approach. These measurements were already examined to have higher validity and reliability on measuring personality traits when implementing in the relevant group of people. Therefore, this study was supposed to give a literature review summarizing the definition process towards personality traits, the specific content and development of the mentioned measurements using etic and emic approach, the measurement issues based on the relevant researches, and some further considerations for etic and emic approach in assessing personality trait
Financial Time-Series Forecasting: Towards Synergizing Performance And Interpretability Within a Hybrid Machine Learning Approach
In the realm of cryptocurrency, the prediction of Bitcoin prices has garnered
substantial attention due to its potential impact on financial markets and
investment strategies. This paper propose a comparative study on hybrid machine
learning algorithms and leverage on enhancing model interpretability.
Specifically, linear regression(OLS, LASSO), long-short term memory(LSTM),
decision tree regressors are introduced. Through the grounded experiments, we
observe linear regressor achieves the best performance among candidate models.
For the interpretability, we carry out a systematic overview on the
preprocessing techniques of time-series statistics, including decomposition,
auto-correlational function, exponential triple forecasting, which aim to
excavate latent relations and complex patterns appeared in the financial
time-series forecasting. We believe this work may derive more attention and
inspire more researches in the realm of time-series analysis and its realistic
applications
In the process of polysaccharide gel formation:A review of the role of competitive relationship between water and alcohol molecules
Polysaccharides have emerged as versatile materials capable of forming gels through diverse induction methods, with alcohol-induced polysaccharide gels demonstrating significant potential across food, medicinal, and other domains. The existing research mainly focused on the phenomena and mechanisms of alcohol-induced gel formation in specific polysaccharides. Therefore, this review provides a comprehensive overview of the intricate mechanisms underpinning alcohol-triggered gelation of different polysaccharides and surveys their prominent application potentials through rheological, mechanical, and other characterizations. The mechanism underlying the enhancement of polysaccharide network structures by alcohol is elucidated, where alcohol displaces water to establish hydrogen bonding and hydrophobic interactions with polysaccharide chains. Specifically, alcohols change the arrangement of water molecules, and the partial hydration shell surrounding polysaccharide molecules is disrupted, exposing polysaccharides' hydrophobic groups and enhancing hydrophobic interactions. Moreover, the pivotal influences of alcohol concentration and addition method on polysaccharide gelation kinetics are scrutinized, revealing nuanced dependencies such as the different gel-promoting capabilities of polyols versus monohydric alcohols and the critical threshold concentrations dictating gel formation. Notably, immersion of polysaccharide gels in alcohol augments gel strength, while direct alcohol addition to polysaccharide solutions precipitates gel formation. Future investigations are urged to unravel the intricate nexus between the mechanisms underpinning alcohol-induced polysaccharide gelation and their practical utility, thereby paving the path for tailored manipulation of environmental conditions to engineer bespoke alcohol-induced polysaccharide gels.</p
In the process of polysaccharide gel formation:A review of the role of competitive relationship between water and alcohol molecules
Polysaccharides have emerged as versatile materials capable of forming gels through diverse induction methods, with alcohol-induced polysaccharide gels demonstrating significant potential across food, medicinal, and other domains. The existing research mainly focused on the phenomena and mechanisms of alcohol-induced gel formation in specific polysaccharides. Therefore, this review provides a comprehensive overview of the intricate mechanisms underpinning alcohol-triggered gelation of different polysaccharides and surveys their prominent application potentials through rheological, mechanical, and other characterizations. The mechanism underlying the enhancement of polysaccharide network structures by alcohol is elucidated, where alcohol displaces water to establish hydrogen bonding and hydrophobic interactions with polysaccharide chains. Specifically, alcohols change the arrangement of water molecules, and the partial hydration shell surrounding polysaccharide molecules is disrupted, exposing polysaccharides' hydrophobic groups and enhancing hydrophobic interactions. Moreover, the pivotal influences of alcohol concentration and addition method on polysaccharide gelation kinetics are scrutinized, revealing nuanced dependencies such as the different gel-promoting capabilities of polyols versus monohydric alcohols and the critical threshold concentrations dictating gel formation. Notably, immersion of polysaccharide gels in alcohol augments gel strength, while direct alcohol addition to polysaccharide solutions precipitates gel formation. Future investigations are urged to unravel the intricate nexus between the mechanisms underpinning alcohol-induced polysaccharide gelation and their practical utility, thereby paving the path for tailored manipulation of environmental conditions to engineer bespoke alcohol-induced polysaccharide gels.</p
Automatic segmentation of meniscus based on MAE self-supervision and point-line weak supervision paradigm
Medical image segmentation based on deep learning is often faced with the
problems of insufficient datasets and long time-consuming labeling. In this
paper, we introduce the self-supervised method MAE(Masked Autoencoders) into
knee joint images to provide a good initial weight for the segmentation model
and improve the adaptability of the model to small datasets. Secondly, we
propose a weakly supervised paradigm for meniscus segmentation based on the
combination of point and line to reduce the time of labeling. Based on the weak
label ,we design a region growing algorithm to generate pseudo-label. Finally
we train the segmentation network based on pseudo-labels with weight transfer
from self-supervision. Sufficient experimental results show that our proposed
method combining self-supervision and weak supervision can almost approach the
performance of purely fully supervised models while greatly reducing the
required labeling time and dataset size.Comment: 8 pages,10 figure
Explore Synergistic Interaction Across Frames for Interactive Video Object Segmentation
Interactive Video Object Segmentation (iVOS) is a challenging task that
requires real-time human-computer interaction. To improve the user experience,
it is important to consider the user's input habits, segmentation quality,
running time and memory consumption.However, existing methods compromise user
experience with single input mode and slow running speed. Specifically, these
methods only allow the user to interact with one single frame, which limits the
expression of the user's intent.To overcome these limitations and better align
with people's usage habits, we propose a framework that can accept multiple
frames simultaneously and explore synergistic interaction across frames (SIAF).
Concretely, we designed the Across-Frame Interaction Module that enables users
to annotate different objects freely on multiple frames. The AFI module will
migrate scribble information among multiple interactive frames and generate
multi-frame masks. Additionally, we employ the id-queried mechanism to process
multiple objects in batches. Furthermore, for a more efficient propagation and
lightweight model, we design a truncated re-propagation strategy to replace the
previous multi-round fusion module, which employs an across-round memory that
stores important interaction information. Our SwinB-SIAF achieves new
state-of-the-art performance on DAVIS 2017 (89.6%, J&F@60). Moreover, our
R50-SIAF is more than 3 faster than the state-of-the-art competitor under
challenging multi-object scenarios
Lifelong Embedding Learning and Transfer for Growing Knowledge Graphs
Existing knowledge graph (KG) embedding models have primarily focused on
static KGs. However, real-world KGs do not remain static, but rather evolve and
grow in tandem with the development of KG applications. Consequently, new facts
and previously unseen entities and relations continually emerge, necessitating
an embedding model that can quickly learn and transfer new knowledge through
growth. Motivated by this, we delve into an expanding field of KG embedding in
this paper, i.e., lifelong KG embedding. We consider knowledge transfer and
retention of the learning on growing snapshots of a KG without having to learn
embeddings from scratch. The proposed model includes a masked KG autoencoder
for embedding learning and update, with an embedding transfer strategy to
inject the learned knowledge into the new entity and relation embeddings, and
an embedding regularization method to avoid catastrophic forgetting. To
investigate the impacts of different aspects of KG growth, we construct four
datasets to evaluate the performance of lifelong KG embedding. Experimental
results show that the proposed model outperforms the state-of-the-art inductive
and lifelong embedding baselines.Comment: Accepted in the 37th AAAI Conference on Artificial Intelligence (AAAI
2023
Towards superior biopolymer gels by enabling interpenetrating network structures:A review on types, applications, and gelation strategies
Gels derived from single networks of natural polymers (biopolymers) typically exhibit limited physical properties and thus have seen constrained applications in areas like food and medicine. In contrast, gels founded on a synergy of multiple biopolymers, specifically polysaccharides and proteins, with intricate interpenetrating polymer network (IPN) structures, represent a promising avenue for the creation of novel gel materials with significantly enhanced properties and combined advantages. This review begins with the scrutiny of newly devised IPN gels formed through a medley of polysaccharides and/or proteins, alongside an introduction of their practical applications in the realm of food, medicine, and environmentally friendly solutions. Finally, based on the fact that the IPN gelation process and mechanism are driven by different inducing factors entwined with a diverse amalgamation of polysaccharides and proteins, our survey underscores the potency of physical, chemical, and enzymatic triggers in orchestrating the construction of crosslinked networks within these biomacromolecules. In these mixed systems, each specific inducer aligns with distinct polysaccharides and proteins, culminating in the generation of semi-IPN or fully-IPN gels through the intricate interpenetration between single networks and polymer chains or between two networks, respectively. The resultant IPN gels stand as paragons of excellence, characterized by their homogeneity, dense network structures, superior textural properties (e.g., hardness, elasticity, adhesion, cohesion, and chewability), outstanding water-holding capacity, and heightened thermal stability, along with guaranteed biosafety (e.g., nontoxicity and biocompatibility) and biodegradability. Therefore, a judicious selection of polymer combinations allows for the development of IPN gels with customized functional properties, adept at meeting precise application requirements.</p
Exploring the interfacial coupling between graphene and the antiferromagnetic insulator MnPSe
Interfacial coupling between graphene and other 2D materials can give rise to
intriguing physical phenomena. In particular, several theoretical studies
predict that the interplay between graphene and an antiferromagnetic insulator
could lead to the emergence of quantum anomalous Hall phases. However, such
phases have not been observed experimentally yet, and further experimental
studies are needed to reveal the interaction between graphene and
antiferromagnetic insulators. Here, we report the study in heterostructures
composed of graphene and the antiferromagnetic insulator MnPSe. It is found
that the MnPSe has little impact on the quantum Hall phases apart from
doping graphene via interfacial charge transfer. However, the magnetic order
can contribute indirectly via process like Kondo effect, as evidenced by the
observed minimum in the temperature-resistance curve between 20-40 K, far below
the N\'eel temperature (70 K)
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