Logical Message Passing Networks with One-hop Inference on Atomic Formulas

Complex Query Answering (CQA) over Knowledge Graphs (KGs) has attracted a lot of attention to potentially support many applications. Given that KGs are usually incomplete, neural models are proposed to answer logical queries by parameterizing set operators with complex neural networks. However, such methods usually train neural set operators with a large number of entity and relation embeddings from zero, where whether and how the embeddings or the neural set operators contribute to the performance remains not clear. In this paper, we propose a simple framework for complex query answering that decomposes the KG embeddings from neural set operators. We propose to represent the complex queries in the query graph. On top of the query graph, we propose the Logical Message Passing Neural Network (LMPNN) that connects the \textit{local} one-hop inferences on atomic formulas to the \textit{global} logical reasoning for complex query answering. We leverage existing effective KG embeddings to conduct one-hop inferences on atomic formulas, the results of which are regarded as the messages passed in LMPNN. The reasoning process over the overall logical formulas is turned into the forward pass of LMPNN that incrementally aggregates local information to predict the answers' embeddings finally. The complex logical inference across different types of queries will then be learned from training examples based on the LMPNN architecture. Theoretically, our query-graph representation is more general than the prevailing operator-tree formulation, so our approach applies to a broader range of complex KG queries. Empirically, our approach yields a new state-of-the-art neural CQA model. Our research bridges the gap between complex KG query answering tasks and the long-standing achievements of knowledge graph representation learning.Comment: Accepted by ICLR 2023. 20 pages, 4 figures, and 9 table

Complex Hyperbolic Knowledge Graph Embeddings with Fast Fourier Transform

The choice of geometric space for knowledge graph (KG) embeddings can have significant effects on the performance of KG completion tasks. The hyperbolic geometry has been shown to capture the hierarchical patterns due to its tree-like metrics, which addressed the limitations of the Euclidean embedding models. Recent explorations of the complex hyperbolic geometry further improved the hyperbolic embeddings for capturing a variety of hierarchical structures. However, the performance of the hyperbolic KG embedding models for non-transitive relations is still unpromising, while the complex hyperbolic embeddings do not deal with multi-relations. This paper aims to utilize the representation capacity of the complex hyperbolic geometry in multi-relational KG embeddings. To apply the geometric transformations which account for different relations and the attention mechanism in the complex hyperbolic space, we propose to use the fast Fourier transform (FFT) as the conversion between the real and complex hyperbolic space. Constructing the attention-based transformations in the complex space is very challenging, while the proposed Fourier transform-based complex hyperbolic approaches provide a simple and effective solution. Experimental results show that our methods outperform the baselines, including the Euclidean and the real hyperbolic embedding models.Comment: Aceepted by the 2022 Conference on Empirical Methods in Natural Language Processing (EMNLP22

TILFA: A Unified Framework for Text, Image, and Layout Fusion in Argument Mining

A main goal of Argument Mining (AM) is to analyze an author's stance. Unlike previous AM datasets focusing only on text, the shared task at the 10th Workshop on Argument Mining introduces a dataset including both text and images. Importantly, these images contain both visual elements and optical characters. Our new framework, TILFA (A Unified Framework for Text, Image, and Layout Fusion in Argument Mining), is designed to handle this mixed data. It excels at not only understanding text but also detecting optical characters and recognizing layout details in images. Our model significantly outperforms existing baselines, earning our team, KnowComp, the 1st place in the leaderboard of Argumentative Stance Classification subtask in this shared task.Comment: Accepted to the 10th Workshop on Argument Mining, co-located with EMNLP 202

Case study 11: The use of camera traps to monitor medium to large mammals in HCVAs, Wilmar Oil Palm Plantation, Miri, Sarawak

Wilmar has a long-term collaboration with UNIMAS since 2013 to conduct biodiversity monitoring (including camera trapping for monitoring mammals) at its oil palm estates in the Miri Division in Sarawak. The biodiversity monitoring sites consist of three HCVAs that are located within the estates. These forested areas are designated as HCVAs as they contain substantial proportions of remnant native biodiversity. Camera trapping has been extensively used in wildlife research as it is highly effi cient and cost-effective for monitoring mammals (Tobler et al., 2008; Rovero et al., 2014), especially in the case of tropical rainforests where species can be cryptic and elusive in nature (Azlan, 2006). Three mammalian surveys via camera trapping were conducted in the Wilmar Oil Palm Plantation, Miri, Sarawak in years 2013-2014, 2014-2015 and 2018-2020. Study sites consisted of three High Conservation Value Areas (HCVAs) that are located within the estates of Saremas 1, Saremas 2 and Segarmas. Bukit Durang is the largest HCVA measuring 989.9ha, Segarmas HCVA is 147.9ha and the smallest is Saremas 1 HCVA at 116.3ha (see accompanying map). Bukit Durang HCVA is classifi ed as HCV 1 while Saremas 1 and Saremas 2 HCVAs are classed as HCV 4. These forests were designated as HCVAs as they contain substantial proportions of remnant native biodiversity. The HCVs are managed by Wilmar’s Eco Management Unit (EMU) under the Sustainability Division and fi nanced by the individual estates. Wilmar Oil Palm Plantation is certifi ed by MSPO, ISCC and RSPO

Improving Rehabilitation Research to Optimize Care and Outcomes for People with Chronic Primary Low Back Pain: Methodological and Reporting Recommendations from a WHO Systematic Review Series

Chronic primary low back pain (CPLBP) is a prevalent and disabling condition that often requires rehabilitation interventions to improve function and alleviate pain. This paper aims to advance future research, including systematic reviews and randomized controlled trials (RCTs), on CPLBP management. We provide methodological and reporting recommendations derived from our conducted systematic reviews, offering practical guidance for conducting robust research on the effectiveness of rehabilitation interventions for CPLBP. Our systematic reviews contributed to the development of a WHO clinical guideline for CPLBP. Based on our experience, we have identified methodological issues and recommendations, which are compiled in a comprehensive table and discussed systematically within established frameworks for reporting and critically appraising RCTs. In conclusion, embracing the complexity of CPLBP involves recognizing its multifactorial nature and diverse contexts and planning for varying treatment responses. By embracing this complexity and emphasizing methodological rigor, research in the field can be improved, potentially leading to better care and outcomes for individuals with CPLBP

A Matter of Trust: Building COVID-19 Vaccine Confidence among Diverse Communities in Canada and the United Kingdom - Final Full Report to The British Academy

Over the course of the COVID-19 pandemic, the virus has undergone many mutations. Governments must continually update their health policies – often in seemingly contradictory terms – to protect the public from illness and death, and health systems from collapsing. This means persuading millions of people, not just once, but twice and three times each, to be vaccinated, while the virus and the messaging about it are in flux. The purpose of our ongoing research, in Canada and the United Kingdom (UK), is to learn what methods to date have worked to improve COVID-19 vaccine confidence among the public throughout the pandemic and to share this information with policymakers, public health officials, community decision-makers and contributors to public discourse. Our goal is to better understand how policy changes and mis/disinformation are experienced in communities with low vaccine confidence and to identify community level interventions that can be used to develop vaccine confidence. For this multiple methods study, our teams analysed and compared societal reception to COVID-19 vaccination policies, in particular the communication of those policies, across two distinct areas and populations, one in the UK and the other in Canada. Both areas studied had areas with lower vaccination rates and similar kinds of demographic subpopulations. We have characterized the evolution of relevant public health policies in terms of their content, context, actors and processes, seeking to learn more about how people understood and acted – or not – on COVID-19 health policy changes over time. We wanted to study which communication channels were used and how various populations responded to public health information and regulations; what other “unofficial” channels they may have used, for better or worse; and what community efforts might have built vaccine confidence among rural and urban communities. We, firstly, examined the policy evolution through a desk review. Our data sources included government websites and official social media, which were used to identify operational COVID-19 policy documents, guidelines, laws and regulations. Search results were indexed, extracted and inserted into a spreadsheet for each country, then policy categories were devised based on how the policies were framed. Secondly, we characterised response to these policies through a series of individual interviews conducted in the East Midlands region of England and in Waterloo, a small, southern-Ontario city in central Canada. Finally, we compared our policy review to our qualitative analysis to gain insights into the influence of policy on vaccine programme equity and coordination. Findings from the desk review indicated that Canada and the UK were able withstand uncertainty and fluctuations created by the global COVID-19 pandemic through adopting a proactive stance. They ensured that their respective populations were able to access vaccines through creating actors dedicated to overseeing vaccine specific policy, such as the vaccine task forces, and by adopting a multisectoral response with targeted funding. However, our findings also indicate that both Canada and the UK would have benefitted from more co-ordinated, consistent, and clear vaccine communications. When health policy makers tried to find the “perfect” way to communicate complex, changing information to the public, they tended to sow confusion and mistrust, creating vaccine hesitancy. Communicating evidence and data in widely accessible ways was important for engendering trust in the policies and processes. The believability of vaccine messages depended on the level of trust in who the messenger was. This varied between Canada and the UK and among different population groups, depending on the level of trust that was shown for politicians vs scientists vs public health doctors. Messaging had to be adapted and targeted for different communities, considering cultural and language differences. While community understanding mattered, approaches that explained the evidence and adopted a compassionate approach that emphasized individual benefits, as well as benefits for those close to an individual, were perceived as being more effective over the longer term than emphasizing community benefits to vaccination. In both countries, adopting an approach that was open, responsive, shared information and created autonomy was seen as more effective than handing policies down from a traditional, rigid hierarchy. In the UK, the framing of vaccination policy as “protect the NHS” had the unintended consequence of worsening access to health care in already deprived communities; doctors abandoned routine activities to prioritise the vaccination programme. Funding of “community championship” schemes in the UK was not proactive, undermining the effort needed to keep vaccine acceptance levels high. At the same time, the UK commissioned key studies that were very valuable in informing vaccine schedules, booster programmes and vaccination of pregnant people, among others, including in other countries such as Canada. With trust for the source and spokesperson at the centre of whether an individual would accept vaccine advice, we see a need for investment in public health outreach work that promotes good relationships with, and among, communities that may have low engagement with vaccination and other health care opportunities. Governments need to have transparent policies on vaccine approval processes that lay people can access and understand. Authentic, ethical statements about what vaccines can and cannot deliver need to be conceived and delivered in good faith. Transparency and open dialogue between the government and historically excluded groups must also be ongoing, as the sudden prioritizing of vaccination raised worries and mistrust in some. We suggest that further study is needed to interrogate the role of trust, especially trust in policy actors. Specifically, how can we expand our understanding of who is a trustworthy leader, especially if they are not in health care, the civil service or elected government? Which potentially important community actors are missing from the COVID-19 story? We have seen in this study that religious leaders can be trusted by many, for example, but what about the influence of women on health care action in communities? And at what point do people switch from wanting to do their duty as citizens of a country, to making a vaccine decision about themselves as individuals? We also suggest that health policy makers prioritise the widest possible global sharing of the best, clearest and most up-to-date scientific information about COVID-19 – and whatever virus comes next – to help reduce the mis/disinformation that spreads like wildfire on social media, creates mistrust and limits vaccine uptake. COVID-19 continues to show us that no individual is immune, even if they are vaccinated

Systematic Review to Inform a World Health Organization (WHO) Clinical Practice Guideline: Benefits and Harms of Structured Exercise Programs for Chronic Primary Low Back Pain in Adults

PURPOSE Evaluate benefits and harms of structured exercise programs for chronic primary low back pain (CPLBP) in adults to inform a World Health Organization (WHO) standard clinical guideline. METHODS We searched for randomized controlled trials (RCTs) in electronic databases (inception to 17 May 2022). Eligible RCTs targeted structured exercise programs compared to placebo/sham, usual care, or no intervention (including comparison interventions where the attributable effect of exercise could be isolated). We extracted outcomes, appraised risk of bias, conducted meta-analyses where appropriate, and assessed certainty of evidence using GRADE. RESULTS We screened 2503 records (after initial screening through Cochrane RCT Classifier and Cochrane Crowd) and 398 full text RCTs. Thirteen RCTs rated with overall low or unclear risk of bias were synthesized. Assessing individual exercise types (predominantly very low certainty evidence), pain reduction was associated with aerobic exercise and Pilates vs. no intervention, and motor control exercise vs. sham. Improved function was associated with mixed exercise vs. usual care, and Pilates vs. no intervention. Temporary increased minor pain was associated with mixed exercise vs. no intervention, and yoga vs. usual care. Little to no difference was found for other comparisons and outcomes. When pooling exercise types, exercise vs. no intervention probably reduces pain in adults (8 RCTs, SMD = - 0.33, 95% CI - 0.58 to - 0.08) and functional limitations in adults and older adults (8 RCTs, SMD = - 0.31, 95% CI - 0.57 to - 0.05) (moderate certainty evidence). CONCLUSIONS With moderate certainty, structured exercise programs probably reduce pain and functional limitations in adults and older people with CPLBP

A Matter of Trust: Building COVID-19 Vaccine Confidence Among Diverse Communities in Canada and the United Kingdom

COVID-19 infections are over-represented in ethnic minority groups and other deprived communities while low uptake levels for COVID-19 vaccines are observed in the same groups. The uptake of a vaccine depends not only on its perceived safety and effectiveness profile but also on how well vaccination policies are communicated by policy makers and subsequently implemented by practitioners. Scarcity of what was known about COVID-19 and its novel vaccines meant COVID-19 vaccination policies evolved quickly. We analysed how changes in government policies on COVID-19 vaccination in the UK (England) and Canada (Ontario) were communicated and experienced by diverse communities

Systematic Review to Inform a World Health Organization (WHO) Clinical Practice Guideline: Benefits and Harms of Needling Therapies for Chronic Primary Low Back Pain in Adults

PURPOSE Evaluate benefits and harms of needling therapies (NT) for chronic primary low back pain (CPLBP) in adults to inform a World Health Organization (WHO) standard clinical guideline. METHODS Electronic databases were searched for randomized controlled trials (RCTs) assessing NT compared with placebo/sham, usual care, or no intervention (comparing interventions where the attributable effect could be isolated). We conducted meta-analyses where indicated and graded the certainty of evidence. RESULTS We screened 1831 citations and 109 full text RCTs, yeilding 37 RCTs. The certainty of evidence was low or very low across all included outcomes. There was little or no difference between NT and comparisons across most outcomes; there may be some benefits for certain outcomes. Compared with sham, NT improved health-related quality of life (HRQoL) (physical) (2 RCTs; SMD = 0.20, 95%CI 0.07; 0.32) at 6 months. Compared with no intervention, NT reduced pain at 2 weeks (21 RCTs; MD = - 1.21, 95%CI - 1.50; - 0.92) and 3 months (9 RCTs; MD = - 1.56, 95%CI - 2.80; - 0.95); and reduced functional limitations at 2 weeks (19 RCTs; SMD = - 1.39, 95%CI - 2.00; - 0.77) and 3 months (8 RCTs; SMD = - 0.57, 95%CI - 0.92; - 0.22). In older adults, NT reduced functional limitations at 2 weeks (SMD = - 1.10, 95%CI - 1.71; - 0.48) and 3 months (SMD = - 1.04, 95%CI - 1.66; - 0.43). Compared with usual care, NT reduced pain (MD = - 1.35, 95%CI - 1.86; - 0.84) and functional limitations (MD = - 2.55, 95%CI - 3.70; - 1.40) at 3 months. CONCLUSION Based on low to very low certainty evidence, adults with CPLBP experienced some benefits in pain, functioning, or HRQoL with NT; however, evidence showed little to no differences for other outcomes

Systematic Review to Inform a World Health Organization (WHO) Clinical Practice Guideline: Benefits and Harms of Transcutaneous Electrical Nerve Stimulation (TENS) for Chronic Primary Low Back Pain in Adults

PURPOSE: To evaluate benefits and harms of transcutaneous electrical nerve stimulation (TENS) for chronic primary low back pain (CPLBP) in adults to inform a World Health Organization (WHO) standard clinical guideline. METHODS: We searched for randomized controlled trials (RCTs) from various electronic databases from July 1, 2007 to March 9, 2022. Eligible RCTs targeted TENS compared to placebo/sham, usual care, no intervention, or interventions with isolated TENS effects (i.e., combined TENS with treatment B versus treatment B alone) in adults with CPLBP. We extracted outcomes requested by the WHO Guideline Development Group, appraised the risk of bias, conducted meta-analyses where appropriate, and graded the certainty of evidence using GRADE. RESULTS: Seventeen RCTs (adults, n = 1027; adults ≥ 60 years, n = 28) out of 2010 records and 89 full text RCTs screened were included. The evidence suggested that TENS resulted in a marginal reduction in pain compared to sham (9 RCTs) in the immediate term (2 weeks) (mean difference (MD) = -0.90, 95% confidence interval  -1.54 to -0.26), and a reduction in pain catastrophizing in the short term (3 months) with TENS versus no intervention or interventions with TENS specific effects (1 RCT) (MD = -11.20, 95% CI -17.88 to -3.52). For other outcomes, little or no difference was found between TENS and the comparison interventions. The certainty of the evidence for all outcomes was very low. CONCLUSIONS: Based on very low certainty evidence, TENS resulted in brief and marginal reductions in pain (not deemed clinically important) and a short-term reduction in pain catastrophizing in adults with CPLBP, while little to no differences were found for other outcomes