The code and data are located in this GitHub repository and are accessible via this address: https://github.com/lennylv/DGCddG.
Graphs are widely utilized in biochemistry to model chemical compounds, proteins, and their interdependencies. The process of graph classification, a common means of sorting graphs into different types, is greatly influenced by the quality of the graph representations. Advances in graph neural networks have facilitated the use of message-passing-based techniques, which iteratively aggregate neighborhood information for creating more robust graph representations. marine sponge symbiotic fungus These methods, while formidable, nevertheless possess inherent shortcomings. Graph neural networks that utilize pooling techniques might not fully capture the hierarchical relationships between parts and wholes that are naturally embedded within the graph's structure, leading to a challenge. Unesbulin Part-whole relationships are generally advantageous for a variety of molecular function prediction assignments. The second hurdle stems from the fact that numerous existing methodologies disregard the inherent diversity present within graph representations. Unveiling the multifaceted nature of the elements will optimize the performance and interpretability of the models. This paper proposes a graph capsule network tailored for graph classification tasks, where disentangled feature representations are automatically learned using well-designed algorithms. This method allows for the decomposition of heterogeneous representations into more granular elements, while leveraging capsules to capture part-whole relationships. The proposed method, applied to various publicly accessible biochemistry datasets, demonstrated its effectiveness, surpassing nine advanced graph learning methods in performance.
Cellular operation, disease investigation, pharmaceutical development, and other facets of organismic survival, advancement, and reproduction are critically reliant on the essential role proteins play. The increasing availability of biological information has led to the widespread adoption of computational methods for the purpose of identifying essential proteins in recent times. The problem was resolved through the application of computational methods, such as machine learning techniques and metaheuristic algorithms. Predicting essential protein classes using these methods remains a challenge due to their low success rate. The dataset's imbalance has been overlooked in many of these employed methods. In this research paper, we describe a novel approach for identifying essential proteins using the Chemical Reaction Optimization (CRO) metaheuristic algorithm and incorporating a machine learning element. In this work, both the topological and biological structures are used. The yeast Saccharomyces cerevisiae (S. cerevisiae) and the bacterium Escherichia coli (E. coli) are often utilized in biological research. The experiment incorporated coli datasets for analysis. Topological features are derived from the PPI network's data. Composite features are derived from the gathered features. SMOTE+ENN balancing techniques were applied to the dataset, after which the CRO algorithm was employed to select the ideal number of features. Our experimental findings indicate that the proposed approach achieves enhanced accuracy and F-measure values compared to existing related methodologies.
Graph embedding is applied in this article to the influence maximization (IM) problem, targeting multi-agent systems (MASs) and networks with probabilistically unstable links (PULs). For the IM problem within networks incorporating PULs, two diffusion models are developed: the unstable-link independent cascade (UIC) model and the unstable-link linear threshold (ULT) model. A second MAS model is constructed to handle the IM problem stemming from PULs, comprising a suite of interaction protocols for the respective agents. Employing a novel graph embedding technique, unstable-similarity2vec (US2vec), the third step tackles the IM problem within networks with PULs by defining the similarity of unstable node structures. Based on the US2vec approach's embedding results, the seed set is determined by the algorithm's calculations. young oncologists The concluding experiments are designed to meticulously confirm both the proposed model and its accompanying algorithms. These experiments then demonstrate the ideal IM solution within a range of scenarios incorporating PULs.
Graph convolutional networks have demonstrated impressive effectiveness across a wide range of graph-based tasks. Developments in graph convolutional networks have led to a multitude of new types. The process of learning a node's feature in graph convolutional networks commonly involves aggregating the feature data from nodes within the node's immediate neighborhood. Yet, the relationships among proximate nodes are not sufficiently accounted for in these models. To learn improved node embeddings, this information proves valuable. Our proposed graph representation learning framework in this article generates node embeddings through the process of learning and propagating edge features. We forgo the practice of aggregating node characteristics from the immediate surroundings; instead, we learn a unique characteristic for each edge and subsequently update a node's representation through the aggregation of its local edge attributes. The edge's defining characteristic is derived from the amalgamation of its starting node's attributes, the inherent edge properties, and the attributes of its ending node. Graph networks often employ node feature propagation, but our model instead propagates diverse attributes from a node to its connected nodes. In conjunction with this, a dedicated attention vector is determined for each connection during aggregation, permitting the model to selectively emphasize valuable insights from each feature dimension. The interrelation of a node and its neighboring nodes is captured in the aggregated edge features, thereby improving node embeddings in graph representation learning. Eight common datasets are used to assess our model's capabilities in graph classification, node classification, graph regression, and the performance of multitask binary graph classification. The experimental findings unequivocally showcase our model's enhanced performance surpassing a diverse range of baseline models.
Although deep-learning-based tracking methods have demonstrated improvements, the requirement for vast and high-quality annotated data persists for sufficient training. Self-supervised (SS) learning for visual tracking is investigated as a solution to the problem of expensive and exhaustive annotation. Within this study, we introduce the crop-transform-paste technique, capable of generating ample training data through simulated appearance fluctuations encountered during object tracking, encompassing variations in object appearances and interference from the background. All synthesized data inherently contains the target state, permitting existing deep trackers to be trained in a standard manner using this synthetic data without the need for human annotation. Existing tracking strategies, integrated into a supervised learning framework, form the basis of the proposed target-aware data synthesis method, with no algorithmic modifications required. Hence, the suggested system of SS learning can be effortlessly implemented within existing tracking frameworks to enable training procedures. Thorough testing demonstrates that our methodology excels against supervised learning approaches when data labels are scarce; it effectively handles diverse tracking complexities like object distortion, obstructions, and background interference due to its adaptability; it outperforms cutting-edge unsupervised methods; and further, it enhances the performance of leading supervised learning systems, including SiamRPN++, DiMP, and TransT.
A considerable portion of patients experiencing a stroke, after the initial six-month recovery period, suffer from permanent hemiparesis in their upper limbs, leading to a pronounced decline in their quality of life. Employing a foot-controlled hand/forearm exoskeleton, this study aims to help patients with hemiparetic hands and forearms regain voluntary control over daily tasks. Patients can manipulate their hands and arms with dexterity through a foot-controlled hand/forearm exoskeleton, employing movements of their unaffected foot as instructions. Employing a stroke patient with a long-standing upper limb hemiparesis, the proposed foot-controlled exoskeleton was first put to the test. The forearm exoskeleton testing showed the device assists patients with roughly 107 degrees of voluntary forearm rotation, demonstrating a static control error under 17. Meanwhile, the hand exoskeleton supported the patient's ability to perform at least six different voluntary hand gestures, achieving a 100% success rate. Additional studies with a larger patient group confirmed the foot-controlled hand/forearm exoskeleton's potential to restore some independent daily activities with the paretic upper limb, like eating and drinking, amongst other things. This research demonstrates that a foot-controlled hand/forearm exoskeleton is a viable treatment option for stroke patients exhibiting chronic hemiparesis, aiming to recover upper limb function.
A patient's perception of sound in their ears is impacted by tinnitus, a phantom auditory experience, and the occurrence of prolonged tinnitus is as high as ten to fifteen percent. As a unique treatment method in Chinese medicine, acupuncture displays considerable benefits in the management of tinnitus. Nonetheless, tinnitus is a subjective sensation reported by patients, and presently, no objective procedure is in place to demonstrate the improvement brought about by acupuncture. Our research employed functional near-infrared spectroscopy (fNIRS) to ascertain the impact of acupuncture on the cerebral cortex in individuals affected by tinnitus. For eighteen subjects, we collected the tinnitus disorder inventory (THI), tinnitus evaluation questionnaire (TEQ), Hamilton anxiety scale (HAMA), and Hamilton depression scale (HAMD) scores, as well as their fNIRS sound-evoked activity data before and after acupuncture treatment.