Articles tagged with Covariance
Researchers developed a neural network approach that learns to clean co-movement patterns in markets before building portfolios. The method achieved lower volatility and higher Sharpe ratios compared to traditional methods.
Chronic pain prevalence differs between rural and urban adult cancer survivors, with rural areas showing higher rates despite having fewer resources. Limited access to pain specialists and insurance challenges contribute to these disparities.
Researchers have found that the Southern Ocean absorbs 25% more carbon dioxide than previously estimated. The new study used direct measurements to assess existing flux products in the Southern Ocean.
A new instrument measures atmospheric ammonia with high sensitivity and fast response, allowing for accurate quantification of NH3 emissions from agricultural ecosystems. The open-path design overcomes challenges faced by close-path instruments, enabling long-term and automated measurements.
A group of researchers proved that whether an object exhibits quantum features depends on the reference frame. The physical laws, however, are still independent of it. This insight might play a role at the interplay of quantum mechanics and gravity.
Scientists from Brown University have successfully linked chlorophyll fluorescence to plant photosynthesis in a deciduous forest, validating orbital measurements of fluorescence with ground-based observations. The study provides crucial ground-truth for measuring photosynthesis on a global scale from low-Earth orbit.
The Society for Industrial and Applied Mathematics awards prizes to top student researchers in applied mathematics and computing. Winners receive cash prizes, travel awards, and certificates for their outstanding work.
A computational method predicts bacterial protein interactions with remarkable accuracy, identifying critical residues that bind directly with other proteins. This breakthrough enables the development of new antibiotics targeting specific protein interactions vital to pathogenic bacteria survival.