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What does the data tell us about immigration in Wales? Search for your area
What does the data tell us about immigration in Wales? Like many countries, Wales sees a steady flow of people arriving and leaving for other countries each year. The difference between those arriving and those leaving is known as net migration. Focusing on people moving from abroad, latest estimates say Wales' population - which was 3.2 million in June 2024 - had increased by about 23,000 over the previous year as a result of net international migration. A recent YouGov poll found a quarter of people surveyed in Wales believed that immigration, alongside the economy, should be among the issues prioritised by the Welsh government, even though immigration is controlled by the UK government.
- North America > United States (0.15)
- North America > Central America (0.14)
- Africa (0.05)
- (16 more...)
Revealing Geography-Driven Signals in Zone-Level Claim Frequency Models: An Empirical Study using Environmental and Visual Predictors
Alfonso-Sánchez, Sherly, Bravo, Cristián, Stankova, Kristina G.
Geographic context is often consider relevant to motor insurance risk, yet public actuarial datasets provide limited location identifiers, constraining how this information can be incorporated and evaluated in claim-frequency models. This study examines how geographic information from alternative data sources can be incorporated into actuarial models for Motor Third Party Liability (MTPL) claim prediction under such constraints. Using the BeMTPL97 dataset, we adopt a zone-level modeling framework and evaluate predictive performance on unseen postcodes. Geographic information is introduced through two channels: environmental indicators from OpenStreetMap and CORINE Land Cover, and orthoimagery released by the Belgian National Geographic Institute for academic use. We evaluate the predictive contribution of coordinates, environmental features, and image embeddings across three baseline models: generalized linear models (GLMs), regularized GLMs, and gradient-boosted trees, while raw imagery is modeled using convolutional neural networks. Our results show that augmenting actuarial variables with constructed geographic information improves accuracy. Across experiments, both linear and tree-based models benefit most from combining coordinates with environmental features extracted at 5 km scale, while smaller neighborhoods also improve baseline specifications. Generally, image embeddings do not improve performance when environmental features are available; however, when such features are absent, pretrained vision-transformer embeddings enhance accuracy and stability for regularized GLMs. Our results show that the predictive value of geographic information in zone-level MTPL frequency models depends less on model complexity than on how geography is represented, and illustrate that geographic context can be incorporated despite limited individual-level spatial information.
- South America > Colombia (0.04)
- Europe > Belgium > Flanders > Antwerp Province > Antwerp (0.04)
- Asia > Bangladesh (0.04)
- (8 more...)
- Health & Medicine (1.00)
- Banking & Finance > Insurance (1.00)
- Transportation > Ground > Road (0.93)
- (2 more...)
- Information Technology > Artificial Intelligence > Representation & Reasoning > Spatial Reasoning (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Statistical Learning (1.00)
- Information Technology > Artificial Intelligence > Machine Learning > Neural Networks > Deep Learning (0.88)
- Information Technology > Artificial Intelligence > Machine Learning > Ensemble Learning (0.87)
What would happen if Yellowstone's 'supervolcano' erupted today?
What would happen if Yellowstone's'supervolcano' erupted today? Say goodbye to Montana, Wyoming, and Idaho. More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results. This photo of a volcano in Iceland doesn't even begin to encapsulate the devastation that would happen if the Yellowstone volcano erupted. Breakthroughs, discoveries, and DIY tips sent six days a week.
- North America > United States > Wyoming (0.26)
- North America > United States > Idaho (0.25)
- Europe > Iceland (0.25)
- (4 more...)
- Asia > Japan > Honshū > Kantō > Tokyo Metropolis Prefecture > Tokyo (0.24)
- North America > United States > Ohio (0.05)
- North America > Mexico (0.05)
- (3 more...)
- Media > News (1.00)
- Leisure & Entertainment > Sports > Basketball (1.00)
- Government > Regional Government > North America Government > United States Government (0.47)
- North America > United States > Ohio (0.05)
- North America > Mexico (0.05)
- North America > United States > New York (0.04)
- (2 more...)
- Media > News (1.00)
- Government > Regional Government > North America Government > United States Government (0.47)
- Health & Medicine > Therapeutic Area > Psychiatry/Psychology (0.30)
- North America > United States > Texas > Travis County > Austin (0.35)
- North America > Mexico (0.05)
- North America > United States > Oregon (0.04)
- (5 more...)
- Media > News (1.00)
- Health & Medicine > Therapeutic Area > Oncology (0.50)
- Government > Regional Government > North America Government > United States Government (0.48)
- Health & Medicine > Therapeutic Area > Psychiatry/Psychology (0.32)
- North America > United States > New Jersey (0.05)
- North America > United States > New York (0.04)
- North America > Mexico (0.04)
- (2 more...)
- Media > News (1.00)
- Health & Medicine > Therapeutic Area > Psychiatry/Psychology (0.31)
A proposal for PU classification under Non-SCAR using clustering and logistic model
Furmanczyk, Konrad, Paczutkowski, Kacper
The present study aims to investigate a cluster cleaning algorithm that is both computationally simple and capable of solving the PU classification when the SCAR condition is unsatisfied. A secondary objective of this study is to determine the robustness of the LassoJoint method to perturbations of the SCAR condition. In the first step of our algorithm, we obtain cleaning labels from 2-means clustering. Subsequently, we perform logistic regression on the cleaned data, assigning positive labels from the cleaning algorithm with additional true positive observations. The remaining observations are assigned the negative label. The proposed algorithm is evaluated by comparing 11 real data sets from machine learning repositories and a synthetic set. The findings obtained from this study demonstrate the efficacy of the clustering algorithm in scenarios where the SCAR condition is violated and further underscore the moderate robustness of the LassoJoint algorithm in this context.
- North America > United States > California > San Francisco County > San Francisco (0.14)
- Europe > Poland > Masovia Province > Warsaw (0.05)
- North America > United States > California > Orange County > Irvine (0.04)
- (2 more...)
- Information Technology > Artificial Intelligence > Machine Learning > Performance Analysis > Accuracy (0.49)
- Information Technology > Artificial Intelligence > Machine Learning > Statistical Learning > Regression (0.36)
- Information Technology > Artificial Intelligence > Machine Learning > Statistical Learning > Clustering (0.34)
The Allbirds Pivot Is a Terrible Idea … Right?
The Allbirds Pivot Is a Terrible Idea Right? Its turn to AI could be an escape hatch for a company with nothing to lose. This is an edition of The Daily, a newsletter that guides you through the biggest stories of the day, helps you discover new ideas, and recommends the best in culture. Walk into any Silicon Valley office in the late 2010s, and you'd probably see at least one pair of Allbirds. Woolly and eco-friendly, the sneakers once epitomized a certain kind of corporate culture (even Barack Obama was a fan), and the company behind them was valued at roughly $4 billion at its peak, in 2021.
- North America > United States > California (0.25)
- Europe > Hungary (0.05)
- Asia > Middle East > Iran (0.05)
- (4 more...)
Obtaining Partition Crossover masks using Statistical Linkage Learning for solving noised optimization problems with hidden variable dependency structure
Przewozniczek, M. W., Frej, B., Komarnicki, M. M., Prusik, M., Tinós, R.
In optimization problems, some variable subsets may have a joint non-linear or non-monotonical influence on the function value. Therefore, knowledge of variable dependencies may be crucial for effective optimization, and many state-of-the-art optimizers leverage it to improve performance. However, some real-world problem instances may be the subject of noise of various origins. In such a case, variable dependencies relevant to optimization may be hard or impossible to tell using dependency checks sufficient for problems without noise, making highly effective operators, e.g., Partition Crossover (PX), useless. Therefore, we use Statistical Linkage Learning (SLL) to decompose problems with noise and propose a new SLL-dedicated mask construction algorithm. We prove that if the quality of the SLL-based decomposition is sufficiently high, the proposed clustering algorithm yields masks equivalent to PX masks for the noise-free instances. The experiments show that the optimizer using the proposed mechanisms remains equally effective despite the noise level and outperforms state-of-the-art optimizers for the problems with high noise.
- Europe > Poland > Lower Silesia Province > Wroclaw (0.05)
- North America > United States > Massachusetts > Suffolk County > Boston (0.04)
- North America > Mexico > Quintana Roo > Cancún (0.04)
- (9 more...)