cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.31241607
title: Regime-specific Return Predictability in Quantiles

description: This paper captures the underlying regime switching mechanism in the prediction of stock returns via a predictive quantile regression with multiple thresholds. The predictability of each predictor is allowed to switch from one regime to another according to the value of a threshold variable and could vary across quantiles, and the predictors could possess heterogeneous degrees of persistence. Statistical learning techniques, including a sequential estimation procedure, an adaptive group Lasso refinement and a backward elimination algorithm, are adopted to estimate the unknown multiple thresholds. The adaptive Lasso is then applied to identify the important predictors in each regime to improve prediction accuracy at each quantile. Asymptotic properties of the proposed estimators are established, which are further corroborated with their nice finite sample performance revealed in simulations. The empirical analysis for the U.S. stock returns shows that the return predictability of several predictors changes with the economic states across the quantiles, demonstrating the regime-specific return predictability in quantiles.
DOI: 10.6084/m9.figshare.31241607.v1
title: Regime-specific Return Predictability in Quantiles

description: This paper captures the underlying regime switching mechanism in the prediction of stock returns via a predictive quantile regression with multiple thresholds. The predictability of each predictor is allowed to switch from one regime to another according to the value of a threshold variable and could vary across quantiles, and the predictors could possess heterogeneous degrees of persistence. Statistical learning techniques, including a sequential estimation procedure, an adaptive group Lasso refinement and a backward elimination algorithm, are adopted to estimate the unknown multiple thresholds. The adaptive Lasso is then applied to identify the important predictors in each regime to improve prediction accuracy at each quantile. Asymptotic properties of the proposed estimators are established, which are further corroborated with their nice finite sample performance revealed in simulations. The empirical analysis for the U.S. stock returns shows that the return predictability of several predictors changes with the economic states across the quantiles, demonstrating the regime-specific return predictability in quantiles.
DOI: 10.48597/7r89-arsb
title: Nitrogen oxides at Schauinsland

description: Measurement of Nitrogen oxides at Schauinsland
DOI: 10.48597/a2qt-q426
title: Ozone at Zingst

description: Measurement of Ozone at Zingst
DOI: 10.48597/f4xa-rd35
title: Ozone at Neuglobsow

description: Measurement of Ozone at Neuglobsow
DOI: 10.48597/tn2x-dwpy
title: Ozone at Waldhof

description: Measurement of Ozone at Waldhof
DOI: 10.48597/zbkp-bkbk
title: Nitrogen oxides at Waldhof

description: Measurement of Nitrogen oxides at Waldhof
DOI: 10.48597/454t-98fz
title: Nitrogen_monoxide at Neuglobsow

description: Measurement of Nitrogen_monoxide at Neuglobsow
DOI: 10.48597/anyw-svda
title: Nitrogen_monoxide at Schauinsland

description: Measurement of Nitrogen_monoxide at Schauinsland
DOI: 10.48597/mqgy-aey9
title: Measurement of Particle_number_concentration at Värriö

description: Measurement of Particle_number_concentration at Värriö
DOI: 10.48597/neeh-9q2w
title: Measurement of Pressure at Värriö

description: Measurement of Pressure at Värriö
DOI: 10.48597/tgdm-xsgu
title: Measurement of Particle_number_concentration at Värriö

description: Measurement of Particle_number_concentration at Värriö
DOI: 10.48597/v9fn-qdp7
title: Measurement of Particle_number_concentration at Värriö

description: Measurement of Particle_number_concentration at Värriö
DOI: 10.48597/hpjk-ec64
title: Measurement of Particle_number_concentration at Värriö

description: Measurement of Particle_number_concentration at Värriö
DOI: 10.48597/cdyx-a82w
title: Measurement of Nitrogen_monoxide at Neuglobsow

description: Measurement of Nitrogen_monoxide at Neuglobsow
DOI: 10.48597/ye6p-fyp3
title: Measurement of Ozone at Izana

description: Measurement of Ozone at Izana
DOI: 10.48597/sj4e-ztnf
title: Measurement of Nitrogen_monoxide at Schauinsland

description: Measurement of Nitrogen_monoxide at Schauinsland
DOI: 10.48597/yfvq-qhhq
title: POPs (persistent organic pollutants) at Schmücke

description: Measurement of POPs (persistent organic pollutants) at Schmücke
DOI: 10.48597/ygy4-t8zs
title: POPs (persistent organic pollutants) at Schauinsland

description: Measurement of POPs (persistent organic pollutants) at Schauinsland
DOI: 10.48597/dxdp-5kbe
title: Measurement of Ozone at Lough Navar

description: Measurement of Ozone at Lough Navar
DOI: 10.48597/nkhe-8qqu
title: Measurement of Ozone at Eskdalemuir

description: Measurement of Ozone at Eskdalemuir
DOI: 10.48597/3b4h-v7qf
title: Measurement of Ozone at Aston Hill

description: Measurement of Ozone at Aston Hill
DOI: 10.48597/mk63-8u68
title: Measurement of Ozone at Yarner Wood

description: Measurement of Ozone at Yarner Wood
DOI: 10.48597/8qjk-wgk7
title: Measurement of Ozone at High Muffles

description: Measurement of Ozone at High Muffles
DOI: 10.48597/k22z-mtxa
title: Measurement of Ozone at Strath Vaich Dam

description: Measurement of Ozone at Strath Vaich Dam
DOI: 10.48597/5r4f-dzwq
title: Measurement of Ozone at Ladybower Res.

description: Measurement of Ozone at Ladybower Res.
DOI: 10.48597/6cbv-4v4k
title: Measurement of Ozone at St. Osyth

description: Measurement of Ozone at St. Osyth
DOI: 10.48597/6fe3-mnqz
title: Measurement of Ozone at Charlton Mackrell

description: Measurement of Ozone at Charlton Mackrell
DOI: 10.48597/8e8e-w724
title: Measurement of Ozone at Weybourne

description: Measurement of Ozone at Weybourne
DOI: 10.48597/b42t-e5k3
title: Measurement of Ozone at Lullington Heath

description: Measurement of Ozone at Lullington Heath
DOI: 10.48597/c6jb-5zbe
title: Measurement of Ozone at Bush

description: Measurement of Ozone at Bush
DOI: 10.48597/fxkw-v74q
title: Measurement of Ozone at Narberth

description: Measurement of Ozone at Narberth
DOI: 10.5281/zenodo.18466680
title: Datasets and R-scripts for the paper "125 years of change: linking long term observations and network topology to reveal shifts in a coastal food web"

description: Datasets and R-scripts for the paper "125 years of change: linking long term observations and network topology to reveal shifts in a coastal food web". For information on the specific content and its structure, please read the readme.txt file.
DOI: 10.48597/s5sf-9qv6
title: Measurement of Ozone at Wicken Fen

description: Measurement of Ozone at Wicken Fen
DOI: 10.5281/zenodo.18466679
title: Datasets and R-scripts for the paper "125 years of change: linking long term observations and network topology to reveal shifts in a coastal food web"

description: Datasets and R-scripts for the paper "125 years of change: linking long term observations and network topology to reveal shifts in a coastal food web". For information on the specific content and its structure, please read the readme.txt file.
DOI: 10.48597/t9u5-mvax
title: Measurement of Ozone at Sibton

description: Measurement of Ozone at Sibton
DOI: 10.48597/vzep-8cy7
title: Measurement of Ozone at Lerwick

description: Measurement of Ozone at Lerwick
DOI: 10.48597/cdmm-jjf8
title: Inorganics in precipitation at Hallahus

description: Measurement of Inorganics in precipitation at Hallahus
DOI: 10.48597/vfhh-sbj7
title: Inorganics in precipitation at Bredkälen

description: Measurement of Inorganics in precipitation at Bredkälen
DOI: 10.48597/84xr-2nz9
title: Measurement of Pm10_mass at Westerland

description: Measurement of Pm10_mass at Westerland
DOI: 10.48597/bmeu-nr8t
title: Measurement of Pm1_mass at Waldhof

description: Measurement of Pm1_mass at Waldhof
DOI: 10.48597/ctyr-8ut5
title: Measurement of Pm10_mass at Zingst

description: Measurement of Pm10_mass at Zingst
DOI: 10.5281/zenodo.18469675
title: Iraq Lake image dataset for semantic segmentation

description: This dataset contains satellite imagery of major lakes in Iraq, including Lake Razzaza, Lake Habbaniyah, Lake Tharthar, Lake Dukan, and Lake Darbandikhan. The dataset is designed for training and evaluating fully convolutional neural networks for semantic segmentation of surface water from Sentinel-2 imagery.

Sentinel-2 Level-2A (surface reflectance) data were accessed and processed using Google Earth Engine. For each lake area of interest and target year, seasonal median composites were generated to reduce the effects of shoreline blurring, cloud contamination, and seasonal water–land mixing. Four 10 m spatial resolution bands were exported as GeoTIFF images: B4 (Red), B3 (Green), B2 (Blue), and B8 (Near-Infrared). All bands were scaled to 8-bit values (0–255) for compatibility with convolutional neural network inputs.

Ground-truth water masks were generated using the JRC Global Surface Water YearlyHistory product. Pixels classified as seasonal water (class 2) and permanent water (class 3) were treated as the positive class. In some regions, masks were further refined using a Normalised Difference Water Index (NDWI) threshold to reduce false positives over land.

The resulting image–mask pairs were tiled into 512×512 pixel patches and organised into training, validation, and test subsets for supervised semantic segmentation. Binary masks are provided as PNG files, where water pixels are labelled as 1 (white) and background pixels as 0 (black).

Dataset structure:





Training set: 857 image-mask pairs




Validation set: 340 image-mask pairs




Test set: 63 image-mask pairs



All image tiles are provided as GeoTIFF files with a spatial resolution of 10 m per pixel.

Data sources:





Sentinel-2 Level-2A imagery (Copernicus/ESA)




JRC Global Surface Water Dataset



This dataset is intended for research and educational use in remote sensing, hydrology, and machine-learning-based water body mapping.
DOI: 10.48597/cy77-tpzg
title: Measurement of Pm10_mass at Waldhof

description: Measurement of Pm10_mass at Waldhof
DOI: 10.48597/kddp-mu2x
title: Measurement of Pm10_mass at Schauinsland

description: Measurement of Pm10_mass at Schauinsland
DOI: 10.48597/qcwd-2c8s
title: Measurement of Pm25_mass at Schauinsland

description: Measurement of Pm25_mass at Schauinsland
DOI: 10.48597/qm4y-eejd
title: Measurement of Pm25_mass at Waldhof

description: Measurement of Pm25_mass at Waldhof
DOI: 10.48597/2yb9-nm37
title: Measurement of Sulphur_dioxide at Schauinsland

description: Measurement of Sulphur_dioxide at Schauinsland
DOI: 10.48597/ambp-pnj9
title: Measurement of Sulphur_dioxide at Waldhof

description: Measurement of Sulphur_dioxide at Waldhof
DOI: 10.48597/g58z-deu7
title: Measurement of Ozone at Schauinsland

description: Measurement of Ozone at Schauinsland
DOI: 10.48597/myy2-nzwr
title: Measurement of Ozone at Westerland

description: Measurement of Ozone at Westerland
DOI: 10.48597/spjv-fa3y
title: Measurement of Sulphur_dioxide at Westerland

description: Measurement of Sulphur_dioxide at Westerland
DOI: 10.5281/zenodo.18466350
title: A ranking–correction–fusion framework (HARMONY) for climate-zone-aware multi-source daily precipitation over China at 0.1°

description: Precipitation data is critical for hydrological modelling and for assessing floods and droughts. However, China's complex topography and pronounced climatic variations mean that data from a single source often exhibits significant regional and seasonal biases, making it challenging to produce stable, reliable nationwide products. This study presents a multi-source fusion framework-HARMONY for generating nationwide daily precipitation data. The core methodology involves objective selection, bias correction, regional adaptive fusion and hierarchical evaluation and interpretation. The structure initially picks out additional input datasets from possible products within the limits of various indicators for diagnosis. It then applies consistency bias control to reduce systematic error propagation, performing fusion at climate zoning scales to generate seamless national results. Multi-level evaluations incorporate continuous statistics, event detection and extreme indicators.
DOI: 10.48597/q2nd-pdz3
title: Measurement of Ozone at Zingst

description: Measurement of Ozone at Zingst
DOI: 10.48597/yqp7-jch4
title: Measurement of Ozone at Waldhof

description: Measurement of Ozone at Waldhof
DOI: 10.5281/zenodo.18466349
title: A ranking–correction–fusion framework (HARMONY) for climate-zone-aware multi-source daily precipitation over China at 0.1°

description: Precipitation data is critical for hydrological modelling and for assessing floods and droughts. However, China's complex topography and pronounced climatic variations mean that data from a single source often exhibits significant regional and seasonal biases, making it challenging to produce stable, reliable nationwide products. This study presents a multi-source fusion framework-HARMONY for generating nationwide daily precipitation data. The core methodology involves objective selection, bias correction, regional adaptive fusion and hierarchical evaluation and interpretation. The structure initially picks out additional input datasets from possible products within the limits of various indicators for diagnosis. It then applies consistency bias control to reduce systematic error propagation, performing fusion at climate zoning scales to generate seamless national results. Multi-level evaluations incorporate continuous statistics, event detection and extreme indicators.
DOI: 10.48597/y4cd-tbnt
title: Measurement of Sulphur_dioxide at Neuglobsow

description: Measurement of Sulphur_dioxide at Neuglobsow
DOI: 10.48597/z2cu-5a2m
title: Measurement of Sulphur_dioxide at Zingst

description: Measurement of Sulphur_dioxide at Zingst
DOI: 10.48597/zy69-52vj
title: Measurement of Sulphur_dioxide at Schmücke

description: Measurement of Sulphur_dioxide at Schmücke
DOI: 10.48597/jrdf-heur
title: Pm25_mass at TMNT09 Vielsalm

description: Measurement of Pm25_mass at TMNT09 Vielsalm
DOI: 10.48597/qaz6-67br
title: Pm10_mass at TMNT09 Vielsalm

description: Measurement of Pm10_mass at TMNT09 Vielsalm
DOI: 10.48597/924z-enaq
title: Measurement of Pm25_mass at TMNT09 Vielsalm

description: Measurement of Pm25_mass at TMNT09 Vielsalm
DOI: 10.48597/m4pv-7axt
title: Measurement of Pm10_mass at TMNT09 Vielsalm

description: Measurement of Pm10_mass at TMNT09 Vielsalm
DOI: 10.48597/ts35-z8je
title: Inorganics in precipitation at Westerland

description: Measurement of Inorganics in precipitation at Westerland
DOI: 10.48597/za2j-25yj
title: Measurement of Heavy metals at Westerland

description: Measurement of Heavy metals at Westerland
DOI: 10.48597/fe4s-2dxv
title: Measurement of Nitrogen oxides at Zingst

description: Measurement of Nitrogen oxides at Zingst
DOI: 10.48597/gkwb-xqrh
title: Measurement of Inorganics in precipitation at Westerland

description: Measurement of Inorganics in precipitation at Westerland
DOI: 10.48597/3xg2-ajjj
title: Measurement of Ammonia at Schmücke

description: Measurement of Ammonia at Schmücke
DOI: 10.48597/6bak-46u7
title: Measurement of Mercury_TGM at Schmücke

description: Measurement of Mercury_TGM at Schmücke
DOI: 10.48597/cr7w-2bmq
title: Measurement of POPs (persistent organic pollutants) at Schmücke

description: Measurement of POPs (persistent organic pollutants) at Schmücke
DOI: 10.48597/g222-g9rb
title: Measurement of POPs (persistent organic pollutants) at Schmücke

description: Measurement of POPs (persistent organic pollutants) at Schmücke
DOI: 10.48597/w89s-u463
title: Measurement of Heavy metals at Schmücke

description: Measurement of Heavy metals at Schmücke
DOI: 10.48597/eve7-czgg
title: Measurement of Heavy metals at Neuglobsow

description: Measurement of Heavy metals at Neuglobsow
DOI: 10.48597/2jhz-6jvg
title: Measurement of POPs (persistent organic pollutants) at Schauinsland

description: Measurement of POPs (persistent organic pollutants) at Schauinsland
DOI: 10.48597/j759-hvtk
title: Measurement of Ammonia at Neuglobsow

description: Measurement of Ammonia at Neuglobsow
DOI: 10.15468/dl.645d73
title: Occurrence Download

description: A dataset containing 260 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Enaeta cumingii (Broderip, 1832)"
 ]
}

 The dataset includes 260 records from 30 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0086873-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5xv6c2
title: Occurrence Download

description: A dataset containing 34035 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Festuca paniculata (L.) Schinz & Thell.",
 "HasCoordinate is true"
 ]
}

 The dataset includes 34035 records from 127 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0037541-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.7gmmap
title: Occurrence Download

description: A dataset containing 1301 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Amphiprion akindynos Allen, 1972"
 ]
}

 The dataset includes 1301 records from 35 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0055779-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.jy67j7
title: Occurrence Download

description: A dataset containing 53 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Engina albocincta Pease, 1860"
 ]
}

 The dataset includes 53 records from 14 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0086877-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.x5sewd
title: Occurrence Download

description: A dataset containing 25205 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is one of (Denmark, Spain, Italy, Portugal, Germany, France, Russian Federation, United Kingdom of Great Britain and Northern Ireland)",
 "DatasetKey is iNaturalist Research-grade Observations",
 "InstitutionCode is inaturalist",
 "MediaType is Image",
 "PublishingOrg is 28eb1a3f-1c15-4a95-931a-4af90ecb574d",
 "TaxonKey is one of (Chroicocephalus ridibundus (Linnaeus, 1766), Ichthyaetus melanocephalus (Temminck, 1820), Leucophaeus atricilla (Linnaeus, 1758))",
 "Year 2015-2022"
 ]
}

 The dataset includes 25205 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0037552-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vjfysh
title: Occurrence Download

description: A dataset containing 2683 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Mnemiopsis leidyi A.Agassiz, 1865"
 ]
}

 The dataset includes 2683 records from 37 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0055785-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.9qech2
title: Occurrence Download

description: A dataset containing 400 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON ((-87.8611360999999960 41.8195777000000035, -87.8611360999999960 41.8204227700000004, -87.8611360999999960 41.8218056300000001, -87.8611360999999960 41.8229579999999999, -87.8611360999999960 41.8245713299999977, -87.8611360999999960 41.8258005300000022, -87.8611360999999960 41.8272601999999978, -87.8598343799999952 41.8272601999999978, -87.8576908200000020 41.8272601999999978, -87.8553941400000014 41.8272601999999978, -87.8539395800000023 41.8272601999999978, -87.8524084600000066 41.8272601999999978, -87.8511833000000024 41.8272601999999978, -87.8511833000000024 41.8261846500000019, -87.8511833000000024 41.8252627500000003, -87.8511833000000024 41.8235725999999985, -87.8511833000000024 41.8224202299999988, -87.8511833000000024 41.8209605500000023, -87.8511833000000024 41.8195777000000035, -87.8527146899999991 41.8195777000000035, -87.8546285799999964 41.8195777000000035, -87.8560065900000069 41.8195777000000035, -87.8570018099999999 41.8195777000000035, -87.8587626000000057 41.8195777000000035, -87.8611360999999960 41.8195777000000035))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1932",
 "BasisOfRecord is one of (Human Observation, Living Specimen, Observation, Specimen, Machine Observation)"
 ]
}

 The dataset includes 400 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0086868-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.gw2pcd
title: Occurrence Download

description: A dataset containing 49 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Paralichthodes algoensis Gilchrist, 1902"
 ]
}

 The dataset includes 49 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0037542-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.p4kc95
title: Occurrence Download

description: A dataset containing 23274 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Reichardia picroides (L.) Roth",
 "HasCoordinate is true"
 ]
}

 The dataset includes 23274 records from 152 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0055787-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.3p52wk
title: Occurrence Download

description: A dataset containing 10 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON ((-87.8597381999999953 41.8127799000000024, -87.8597381999999953 41.8139995100000021, -87.8597381999999953 41.8157930599999972, -87.8597381999999953 41.8170844200000005, -87.8597381999999953 41.8183040300000002, -87.8597381999999953 41.8199540999999968, -87.8578011099999969 41.8199540999999968, -87.8559357599999942 41.8199540999999968, -87.8545726300000069 41.8199540999999968, -87.8530659999999983 41.8199540999999968, -87.8512723999999992 41.8199540999999968, -87.8512723999999992 41.8190214500000010, -87.8512723999999992 41.8172996500000025, -87.8512723999999992 41.8162235200000012, -87.8512723999999992 41.8147886799999995, -87.8512723999999992 41.8136408000000017, -87.8512723999999992 41.8127799000000024, -87.8522768200000002 41.8127799000000024, -87.8535682100000059 41.8127799000000024, -87.8547878600000018 41.8127799000000024, -87.8565814600000010 41.8127799000000024, -87.8588055299999979 41.8127799000000024, -87.8597381999999953 41.8127799000000024))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 1932",
 "BasisOfRecord is one of (Human Observation, Living Specimen, Observation, Specimen, Machine Observation)"
 ]
}

 The dataset includes 10 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0086874-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.