Robust outlier detection by de-biasing VAE likelihoods

Deep networks often make confident, yet, incorrect, predictions when tested with outlier data that is far removed from their training distributions. Likelihoods computed by deep generative models (DGMs) are a candidate metric for outlier detection with unlabeled data. Yet, previous studies have shown that DGM likelihoods are unreliable and can be easily biased by simple transformations to input data. Here, we examine outlier detection with variational autoencoders (VAEs), among the simplest of DGMs. We propose novel analytical and algorithmic approaches to ameliorate key biases with VAE likelihoods. Our bias corrections are sample-specific, computationally inexpensive, and readily computed for various decoder visible distributions. Next, we show that a well-known image pre-processing technique -- contrast stretching -- extends the effectiveness of bias correction to further improve outlier detection. Our approach achieves state-of-the-art accuracies with nine grayscale and natural image datasets, and demonstrates significant advantages -- both with speed and performance -- over four recent, competing approaches. In summary, lightweight remedies suffice to achieve robust outlier detection with VAEs.Comment: To appear at CVPR 2022. 20 pages and 19 figure

CONTENT BASED INFORMATION RETRIEVAL FOR DIGITAL LIBRARY USING DOCUMENT IMAGE

In the recent year, the using of mobile devices has perceive an emerging need for improving the user experience of digital library for search, with various applications such as education, location search and product retrieval, There simply compare the query to the databases images; those are match that images are retrieve from the database, searching and response time of delivery staying a challenging issues in mobile document search previously lots of work has been done on search engine, retrieving the document from the database without analyzed the image. In The proposed method, Information retrieval for image based query automatically with a mobile document information retrieval framework, consisting of a FP-growth is proposed finding frequent pattern from the retrieve document to optimize the result

Feasibility or Experiment on Working Model of Self Balancing Vehicle

The invention discloses a small-sized self-balancing scooter. The small-sized self-balancing scooter comprises a platform, two wheels arranged on the two sides of the platform correspondingly, and a direction control rod arranged on the platform. The small-sized self-balancing scooter further comprises two pedals arranged on the outer sides of the two wheels correspondingly. The pedals are connected with the small-sized self-balancing scooter through hinges. When the small-sized self-balancing scooter is in a non-riding state, the pedals on the outer sides of the wheels can be turned and folded through the hinges, so that the dimension of the scooter in the length direction is greatly reduced. Therefore, the size of the small-sized self-balancing scooter is reduced, and the small-sized self-balancing scooter can be conveniently carried by riders. Meanwhile, tires of the small-sized self-balancing scooter are arranged in a splayed manner, so that the wheel diameter of the wheels is increased on the basis of ensuring the whole size of the scooter, and the obstacle crossing capacity of the scooter is improved

The use of neural integrity monitor [NIM flextm] tube in patients undergoing posterior fossa surgery: our institutional experience

Neurosurgery for cerebellopontine angle tumour involves handling and dissection of cranial nerves at their origin from the brainstem. Lower cranial nerves or their nuclei may be affected by lesions arising from or extending up to the medulla. Preserving their structural and functional integrity is an important goal during surgical resection. Important functions of vagus nerve include swallowing, speech, respiration and heart rate control and its damage is one of the devastating complications of posterior fossa tumour resection. Electromyographic monitoring for recurrent branch of vagus nerve has been done in thyroid surgeries using a specially designed neural integrity monitor (NIM flexTM) electromyogram (EMG) endotracheal tube containing embedded stimulating electrodes placed at the level of vocal cords. We present our experience with the use of this NIM flexTM EMG endotracheal tube for vagus nerve monitoring in neurosurgery for posterior fossa tumours in four patients. Use of this tube in neurosurgery has been less reported in the Indian literature

Humanistic burden in schizophrenia: a literature review.

Abstract Objectives of the study and background Schizophrenia is a complex disease that affects 1% of the population. This disease has a considerable impact not only on patients' health and well-being but also on their surrounding environment. The costs of the disease's management remain large for individuals and society. While literature on the economic impact of schizophrenia is abundant, few studies have focused on its humanistic burden. This does not only concern patients, but also caregivers, relatives, neighbours and others in a patient's daily life. This burden appears through several dimensions, including treatment side effects and the impact on caregivers and features of the patient's environment. The aim of this review is to consider, compile and describe the humanistic burden of schizophrenia as documented in the literature. Materials and methods We conducted a literature review assessing the worldwide disease burden of schizophrenia, taking into account all humanistic burden topics. The search considered several databases, including Embase, Medline, Cochrane Library, The German Institute of Medical Documentation and Information (DIMDI) and the ISPOR conference websites. Results The search identified 200 literature reviews, covering several dimensions of humanistic burden and documenting many issues. Main findings included the high death rates that may be explained by long-lasting negative health habits, disease- and treatment-related metabolic disorders, and consequent increased frequencies of cardiovascular diseases. Co-existing depression was found to have adverse consequence on the course of schizophrenia progression, morbidity and mortality. Cognitive impairment also adds to the burden of schizophrenia. Social impairment is worsened by underestimated stigmatisation and lack of corresponding awareness within the professional and social spheres. Finally, caregiver burden was found to be considerable. Discussion Humanistic burden among patients with schizophrenia is substantial potentially impacted by co-morbid depressive symptoms, caregiver burden and cognitive impairment. Effects of treatment on humanistic burden in addition to economic burden need to be explored in future trials

Novel genetic loci associated with hippocampal volume

The hippocampal formation is a brain structure integrally involved in episodic memory, spatial navigation, cognition and stress responsiveness. Structural abnormalities in hippocampal volume and shape are found in several common neuropsychiatric disorders. To identify the genetic underpinnings of hippocampal structure here we perform a genome-wide association study (GWAS) of 33,536 individuals and discover six independent loci significantly associated with hippocampal volume, four of them novel. Of the novel loci, three lie within genes (ASTN2, DPP4 and MAST4) and one is found 200 kb upstream of SHH. A hippocampal subfield analysis shows that a locus within the MSRB3 gene shows evidence of a localized effect along the dentate gyrus, subiculum, CA1 and fissure. Further, we show that genetic variants associated with decreased hippocampal volume are also associated with increased risk for Alzheimer’s disease (rg=−0.155). Our findings suggest novel biological pathways through which human genetic variation influences hippocampal volume and risk for neuropsychiatric illness

Pineal Abnormalities in Psychosis and Mood Disorders: A Systematic Review

Data Availability Statement: Not applicableSupplementary Materials: The following supporting information can be downloaded at: https://www.mdpi.com/article/10.3390/brainsci13050827/s1, Table S1: Newcastle-Ottawa Quality Assessment Scale (NOS) scores for the selected studies., Table S2: Critical Appraisal Skills Programme (CASP) scores.Copyright © 2023 by the authors. The pineal gland (PG) is a small interhemispheric brain structure that influences human physiology in many ways, most importantly via secretion of the hormone melatonin which is known to regulate sleep and wakefulness. Here, we systematically reviewed existing neuroimaging studies of PG structure, and/or melatonin release (MLT) in psychosis and mood disorders. Medline, PubMed, and Web of Science databases were searched (on 3 February 2023), yielding 36 studies (8 PG volume, 24 MLT). The findings showed smaller-than-normal PG volume in people with schizophrenia, regardless of symptom severity and illness stage; and smaller-than-normal PG volume in major depression, with some indication of this being present only in certain subgroups, or in those with high scores on the ‘loss of interest’ symptom. There was considerable evidence of lower-than-normal MLT as well as aberrant MLT secretion pattern in schizophrenia. A similar picture, though less consistent than that seen in schizophrenia, emerged in major depression and bipolar disorder, with some evidence of a transient lowering of MLT following the initiation of certain antidepressants in drug-withdrawn patients. Overall, PG and MLT aberrations appear to represent transdiagnostic biomarkers for psychosis and mood disorders, but further work is needed to establish their clinical correlates and treatment implications.This research received no external funding

Study of fetomaternal outcome in pre-eclampsia at tertiary care centres, South Gujarat

Background: Hypertensive disorders are among the most common medical disorder during pregnancy and continue to be a serious challenge in obstetric practice. It affects about 7-15% of all gestations. In India it accounts for the third most important cause of maternal mortality. Aim if this study was to study the prevalence of pre-eclampsia and feto-maternal outcome in cases of pre-eclampsia. Methods: This was a descriptive observational study conducted over a period from February 2019 to July 2021. This study enrolled 106 cases of pre-eclampsia, cases were selected by inclusion and exclusion criteria, data were entered and analysed by using SPSS version 20. Results: A total of 106 patients were analysed. It was observed that it was more common in age group of 26 to 30 years 51%, 56% were unbooked patients. Maximum number of patients were primigravida 60%, 96% patients were from lower socioeconomic class, 37% patients had normal vaginal delivery, 63% had caesarean delivery. The most common maternal complication was eclampsia (12%), HELLP Syndrome 12%, abruptio occurred in 8% of patients. Maternal mortality occurred in 4 cases. Out of 106 babies 37 (34.93%) babies had normal outcome while 29% (27.35%) had low birth weight, 16 (15.09%) babies were IUGR, 15 (14.5%) babies were IUFD, 7 (6.6%) babies had RDS and 2 (1.8%) babies were stillbirth 40 (44.94%) babies were admitted in NICU. Conclusions: This study concludes that foetal and maternal outcome were markedly affected by pre-eclampsia and also the grave complications were more common in pre-eclampsia. So proper antenatal care, early diagnosis of pre-eclampsia and timely intervention will decrease maternal perinatal morbidity and mortality

Health promotion and screening for people with an intellectual disability

People with intellectual disability have significantly worse health than those without, and have a higher level of complex health needs. The life expectancy for men and women is 13 and 20 years shorter, respectively, than the general population. The increasing role of general practice in delivering and coordinating care across health and social care settings requires expert generalist skills to implement an integrated approach to care. This article explores how general practice can improve the health of people with intellectual disability, by making reasonable adjustments within health promotion, disease prevention, screening and detection

Eating well, living well and weight management: A co-produced semi-qualitative study of barriers and facilitators experienced by adults with intellectual disabilities

Adults with intellectual disabilities in England experience health inequalities. They are more likely than their non-disabled peers to be obese and at risk of serious medical conditions such as heart disease, stroke and type 2 diabetes. This semi-qualitative study engaged adults with intellectual disabilities in a co-production process to explore their perceived barriers and facilitators to eating well, living well and weight management. Nineteen participants with intellectual disabilities took part in four focus groups and one wider group discussion. They were supported by eight of their carers or support workers. Several barriers were identified including personal income restrictions, carers’ and support workers’ unmet training needs, a lack of accessible information, inaccessible services and societal barriers such as the widespread advertising of less healthy foodstuffs. A key theme of frustration with barriers emerged from analysis of participants’ responses. Practical solutions suggested by participants included provision of clear and accessible healthy lifestyle information, reasonable adjustments to services, training, ‘buddying’ support systems or schemes and collaborative working to improve policy and practice