Few-Shot Semantic Relation Prediction Across Heterogeneous Graphs

Semantic relation prediction aims to mine the implicit relationships between objects in heterogeneous graphs, which consist of different types of objects and different types of links. In real-world scenarios, new semantic relations constantly emerge and they typically appear with only a few labeled data. Since a variety of semantic relations exist in multiple heterogeneous graphs, the transferable knowledge can be mined from some existing semantic relations to help predict the new semantic relations with few labeled data. This inspires a novel problem of few-shot semantic relation prediction across heterogeneous graphs. However, the existing methods cannot solve this problem because they not only require a large number of labeled samples as input, but also focus on a single graph with a fixed heterogeneity. Targeting this novel and challenging problem, in this paper, we propose a Meta-learning based Graph neural network for Semantic relation prediction, named MetaGS. Firstly, MetaGS decomposes the graph structure between objects into multiple normalized subgraphs, then adopts a two-view graph neural network to capture local heterogeneous information and global structure information of these subgraphs. Secondly, MetaGS aggregates the information of these subgraphs with a hyper-prototypical network, which can learn from existing semantic relations and adapt to new semantic relations. Thirdly, using the well-initialized two-view graph neural network and hyper-prototypical network, MetaGS can effectively learn new semantic relations from different graphs while overcoming the limitation of few labeled data. Extensive experiments on three real-world datasets have demonstrated the superior performance of MetaGS over the state-of-the-art methods. IEEE

Palliative care interventions for people who use substances during communicable disease outbreaks: a scoping review

Objectives When resources are strained during communicable disease outbreaks, novel palliative care interventions may be required to optimally support people who use substances with life-limiting illnesses. Therefore, we asked the question, € what is known about communicable disease outbreaks, palliative care and people who use substances?', such as palliative care interventions that can improve the quality of life of patients with life-limiting illnesses. Design We conducted a scoping review that involved comprehensive searches in six bibliographic databases from inception to April 2021 (Medline ALL (Medline and Epub Ahead of Print and In-Process and Other Non-Indexed Citations), Embase Classic+Embase, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trial, PsycInfo all from the OvidSP platform, Scopus from Elsevier) and grey literature searches. We included English and French records about people ≥18 years old with life-limiting illnesses who use substances during communicable disease outbreaks. We identified, summarised and presented the findings about palliative care interventions in figures, tables and narrative descriptions. Results We identified 32 records about palliative care interventions for people who use substances during communicable disease outbreaks. The majority focused on palliative care for people who use substances with AIDS during HIV epidemics (n=27, 84.4%), and approximately half were published in the USA (n=15, 46.9%). Most common substances used were alcohol (n=18, 56.3%), opioids (n=14, 43.8%) and cocaine (n=10, 31.3%). Four groups of palliative care interventions were identified: (1) symptom management (n=20, 62.5%), (2) psychosocial support (n=15, 46.9%), (3) advance care planning (n=8, 25.0%) and (4) healthcare provider training (n=6, 18.8%). Conclusions Beyond studies on HIV epidemics, there is limited knowledge about palliative care interventions for people who use substances during communicable disease outbreaks. Research and guidance are needed about how best to provide palliative care to this population with complex needs including in resource-limited countries. Protocol Buchman DZ, Ding P, Lo S, et al. Palliative care for people who use substances during communicable disease epidemics and pandemics. BMJ Open 2021;11: e053124

ON THE RIGHTS PROTECTION OF VULNERABLE GROUPS UNDER THE PREVENTION AND CONTROL OF A PUBLIC HEALTH CRISIS: A LITERATURE REVIEW AND PERSPECTIVE FOR FUTURE DIRECTIONS

The legal system for prevention and control of a public health crisis rests on two pillars: human rights protection and good governance. This duality is well illustrated by substantively equal treatment of vulnerable groups in a pandemic from the perspectives of public service, social inclusion, accessible environment, gender equality, and right to health. A review of literature on this topic shows that current research needs to address the gap between "life supremacy" and "equal protection" in the area of human rights protection, and the gap between "putting people first" and "strict control at the grassroots level" in the area of good governance. The research should employ intersectional methodology to highlight the rights logic of the socialist legal system and the key role of the Communist Party of China's leadership in balancing individual versus community rights, enhancing the governance capability for participation by multiple social agents, ensuring equal protection for disadvantaged groups, promoting inclusive and sustainable development, and realizing the common prosperity of all the people.