Modeling and matching procedures, integral to atomic model creation, yield a product assessed through a variety of metrics. These metrics pinpoint areas for enhancement and refinement to ensure the model aligns with our current knowledge of molecular structures and their physical limitations. During the creation of a cryo-electron microscopy (cryo-EM) model, validation is inseparable from the iterative modeling process, necessitating continuous judgment of the model's quality. Communication of the validation process and its results is typically bereft of the benefits of visual metaphors. This investigation furnishes a visual platform for the verification of molecular entities. Through a collaborative design process, the framework was developed with the substantial input of domain experts. The system's core is a novel visual representation employing 2D heatmaps to linearly present all accessible validation metrics. It provides a global view of the atomic model and equips domain experts with interactive analysis tools. Regions of higher relevance are highlighted by the user's attention, guided by additional information, including various local quality metrics, derived from the underlying data. The heatmap is coupled with a three-dimensional molecular visualization that demonstrates the spatial arrangement of the structures and the metrics chosen. properties of biological processes The structure's statistical characteristics find visual representation within the broader framework. Cryo-EM serves as a source of illustrative examples to showcase the framework's usability and its guiding visualization.
The K-means (KM) clustering algorithm's broad adoption is attributable to its straightforward implementation and high-quality clustering outcomes. Nevertheless, the standard kilometer calculation is computationally intensive, leading to substantial delays. Consequently, a mini-batch (mbatch) k-means algorithm is suggested to substantially decrease computational expenses by updating centroids after distance calculations on only a mbatch, instead of the entirety, of the dataset's samples. The mbatch km method, while converging faster, experiences a decline in convergence quality because of the staleness introduced during iterations. Consequently, this paper introduces the staleness-reduction minibatch (srmbatch) k-means algorithm, which optimally balances low computational costs, akin to minibatch k-means, with high clustering quality, mirroring the standard k-means approach. Moreover, the srmbatch application effectively displays significant parallelism that can be optimized on multiple CPU cores and high-core GPUs. The experiments show srmbatch converges between 40 and 130 times faster than mbatch to reach the same loss target.
Categorizing sentences is a primary function in natural language processing, in which an agent must ascertain the most fitting category for the input sentences. Deep neural networks, notably pretrained language models (PLMs), have shown exceptional performance in this domain recently. In the majority of cases, these methods are concentrated on input sentences and the creation of their associated semantic representations. Even so, for another substantial component, namely labels, prevailing approaches frequently treat them as trivial one-hot vectors or utilize basic embedding techniques to learn label representations along with model training, thus underestimating the profound semantic insights and direction inherent in these labels. In this article, we employ self-supervised learning (SSL) to mitigate this problem and capitalize on label information, designing a novel self-supervised relation-of-relation (R²) classification task for a more effective utilization of the one-hot representation of labels. A novel strategy for text classification is developed, using both text classification and R^2 classification as optimization criteria. Concurrently, triplet loss is applied to strengthen the interpretation of differences and associations between labels. Besides, as the one-hot representation fails to fully exploit the semantic richness of labels, we leverage WordNet's external knowledge to build nuanced multi-faceted label descriptions for semantic learning and introduce a new methodology from the perspective of label embeddings. read more Expanding our approach, anticipating the introduction of noise through detailed descriptions, we develop a mutual interaction module based on contrastive learning (CL). This module selects the necessary sections from both the input sentences and the corresponding labels to lessen the noise's impact. Across a range of text classification tasks, extensive trials reveal that this approach dramatically boosts classification performance, more efficiently exploiting label information for a further improvement in accuracy. As a secondary outcome, the codes have been made publicly accessible to support broader research initiatives.
The importance of multimodal sentiment analysis (MSA) lies in its ability to quickly and accurately understand people's attitudes and opinions surrounding an event. Despite the availability of existing sentiment analysis methods, a key challenge lies in the substantial contribution of textual data, often dubbed text dominance. For MSA objectives, we assert that diminishing the leading role of textual input is a critical step forward. To resolve the preceding two issues, we initiate the development of the Chinese multimodal opinion-level sentiment intensity (CMOSI) dataset, from a dataset perspective. Three different versions of the dataset were developed through three distinct techniques: manually reviewing and correcting subtitles, generating subtitles via machine speech transcription, and generating subtitles through expert human cross-lingual translation. The two most recent versions dramatically detract from the textual model's dominant status. One hundred forty-four authentic videos from Bilibili were randomly sourced, and 2557 clips containing emotional content were manually edited from those videos. Considering network modeling, we introduce a multimodal semantic enhancement network (MSEN) which uses a multi-headed attention mechanism, aided by multiple CMOSI dataset versions. Our CMOSI experiments show that the network consistently achieves superior performance with the text-unweakened dataset form. immune tissue The text-weakened dataset's performance is minimally affected in both versions, demonstrating that our network can effectively utilize the latent semantics within patterns unrelated to text. Our model's generalization capabilities were tested on MOSI, MOSEI, and CH-SIMS datasets with MSEN; results indicated robust performance and impressive cross-language adaptability.
Multi-view clustering using structured graph learning (SGL) has become a focal point of interest within the broader field of graph-based multi-view clustering (GMC) recently, yielding promising results. Yet, a prevalent problem with existing SGL methodologies is their struggle with sparse graphs, typically bereft of the useful information commonly found in real-world instances. In order to mitigate this concern, we propose a novel multi-view and multi-order SGL (M²SGL) model that logically integrates various orders of graphs into the SGL process. M 2 SGL's design incorporates a two-layered weighted learning approach. The initial layer truncates subsets of views in various orders, prioritizing the retrieval of the most important data. The second layer applies smooth weights to the preserved multi-order graphs for careful fusion. Furthermore, a recursive optimization algorithm is developed to address the optimization challenge within M 2 SGL, accompanied by a comprehensive theoretical examination. The M 2 SGL model's performance, as evidenced by extensive empirical results, surpasses all others in several benchmark situations.
Fusion of hyperspectral images (HSIs) with accompanying high-resolution images has shown substantial promise in boosting spatial detail. In recent times, the advantages of low-rank tensor-based methods have become apparent when contrasted with other approaches. These current methods, however, either give in to the arbitrary, manual selection of the latent tensor rank, where knowledge about the tensor rank is surprisingly scarce, or employ regularization to impose low rank without investigating the fundamental low-dimensional variables, thereby shirking the computational burden of parameter tuning. To remedy this, we introduce a novel Bayesian sparse learning-based tensor ring (TR) fusion model, which we call FuBay. By employing a hierarchical sparsity-inducing prior distribution, the proposed method establishes itself as the first fully Bayesian probabilistic tensor framework for hyperspectral fusion. With the established relationship between the sparsity of components and the corresponding hyperprior parameter, a component pruning element is incorporated, driving the model toward asymptotic convergence with the true latent rank. Finally, a variational inference (VI) algorithm is presented to deduce the posterior distribution of TR factors, thereby circumventing the non-convex optimization that commonly hinders tensor decomposition-based fusion methods. Due to its Bayesian learning approach, our model exhibits the characteristic of not requiring parameter tuning. Eventually, exhaustive testing reveals a superior performance when put side-by-side with the most advanced existing methods.
The current rapid escalation of mobile data volumes requires significant improvements in the speed of data delivery by the underlying wireless communication systems. Network node deployment has been considered a promising avenue for improving throughput, but it often encounters considerable difficulty in optimizing for throughput due to the highly non-trivial and non-convex challenges it presents. While convex approximation-based methods are cited in academic publications, their estimations of actual throughput might be loose, occasionally yielding undesirable performance outcomes. With this premise in mind, we detail a novel graph neural network (GNN) methodology for the network node deployment challenge within this article. A GNN was fitted to the network's throughput, and the gradients of this GNN were leveraged to iteratively adjust the positions of the network nodes.