cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.29256466.v2
title: Selection Bias Adjustment by Functional Transfer Learning via Reproducing Kernel Hilbert Space

description: As accessibility to different data sources increases, transfer learning becomes prevalent in improving statistical efficiency by integrating different datasets. In this article, we focus on the popular non-probability sampling from a finite population and propose a functional transfer learning method to adjust its selection bias through calibrating marginal means of functions in a reproducing kernel Hilbert space by incorporating a reference probability sample. Compared with existing works, the proposed method is more robust since no parametric assumption is made for both regression and selection models. Besides, the proposed method is multitask-oriented in the sense that the estimated sample weights can be used to estimate different population parameters. Theoretical properties, including consistency and a limiting distribution, are established under some regularity conditions. Numerical experiments show that the proposed estimator outperforms its competitors. The proposed method is applied to the second round economic census data in China as an empirical illustration.
DOI: 10.6084/m9.figshare.29114069
title: Estimating State Price Densities Implied by American Options

description: We propose a new method to estimate state price densities implicit in American-style options. The method involves estimating the parameters of a Gauss-Hermite series expansion and solving a sequence of recursive equations for the early exercise premium. The resulting estimator can capture sudden shifts in density that may occur during financial crises or in response to significant policy events. It also provides an estimate of the early exercise premium that is of independent interest. We illustrate the proposed method using both calibrated simulations and empirical applications. Our findings indicate that the state price densities implied by S&P 500 ETF options can predict future returns up to a one-year horizon for the period 2009–2023. An application to individual stock options suggests that the state price densities have predictive power for future stock returns at both short (one month) and long (one year) horizons. The analysis also reveals a pattern of sign reversal when moving from short to longer horizon predictions.
DOI: 10.6084/m9.figshare.29114069.v1
title: Estimating State Price Densities Implied by American Options*

description: We propose a new method to estimate state price densities implicit in American-style options. The method involves estimating the parameters of a Gauss-Hermite series expansion and solving a sequence of recursive equations for the early exercise premium. The resulting estimator can capture sudden shifts in density that may occur during financial crises or in response to significant policy events. It also provides an estimate of the early exercise premium that is of independent interest. We illustrate the proposed method using both calibrated simulations and empirical applications. Our findings indicate that the state price densities implied by S&P 500 ETF options can predict future returns up to a one-year horizon for the period 2009-2023. An application to individual stock options suggests that the state price densities have predictive power for future stock returns at both short (one month) and long (one year) horizons. The analysis also reveals a pattern of sign reversal when moving from short to longer horizon predictions.
DOI: 10.6084/m9.figshare.29114069.v2
title: Estimating State Price Densities Implied by American Options

description: We propose a new method to estimate state price densities implicit in American-style options. The method involves estimating the parameters of a Gauss-Hermite series expansion and solving a sequence of recursive equations for the early exercise premium. The resulting estimator can capture sudden shifts in density that may occur during financial crises or in response to significant policy events. It also provides an estimate of the early exercise premium that is of independent interest. We illustrate the proposed method using both calibrated simulations and empirical applications. Our findings indicate that the state price densities implied by S&P 500 ETF options can predict future returns up to a one-year horizon for the period 2009–2023. An application to individual stock options suggests that the state price densities have predictive power for future stock returns at both short (one month) and long (one year) horizons. The analysis also reveals a pattern of sign reversal when moving from short to longer horizon predictions.
DOI: 10.6084/m9.figshare.29154778.v1
title: A Functional-Coefficient VAR Model for Dynamic Quantiles and Its Application to Constructing Nonparametric Financial Network*

description: In this article, we investigate a functional coefficient vector autoregressive model for conditional quantiles, in which the interdependences among tail risks such as Value-at-Risk are allowed to vary smoothly with a variable of general economy. Methodologically, we develop an easy-to-implement two-stage procedure to estimate functionals in the dynamic network system based on the deep learning method of neural networks and the local linear smoothing technique. We establish the consistency and the asymptotic normality of the proposed estimator under geometrically β-mixing time series settings. The simulation studies are conducted to show that our new methods work fairly well. The potential of the proposed estimation procedures is demonstrated by an empirical study of constructing and estimating a new type of nonparametric dynamic financial network.
DOI: 10.15468/dl.p3pvaz
title: Occurrence Download

description: A dataset containing 11149 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Cossura",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 11149 records from 216 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005376-260221153910048/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.74jcbh
title: Occurrence Download

description: A dataset containing 9 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 },
 "TaxonKey is Baccharis gilliesii",
 "Year is less than or equal to 2000",
 "Year is greater than or equal to 1970",
 {
 "or" : [
 {
 "not" : {
 "EstablishmentMeans" : [
 "is one of (MANAGED, INTRODUCED)"
 ]
 }
 },
 "EstablishmentMeans is null"
 ]
 },
 {
 "or" : [
 "CoordinateUncertaintyInMeters is less than 1000",
 "CoordinateUncertaintyInMeters is null"
 ]
 }
 ]
}

 The dataset includes 9 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005377-260221153910048/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.64vp9a
title: Occurrence Download

description: A dataset containing 7325913 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is one of (Human Observation, Specimen, Observation)",
 "Geometry POLYGON((-79.4 40.59,-61.41 40.59,-61.41 47.8,-79.4 47.8,-79.4 40.59))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "License is one of (CC-BY-NC 4.0, CC-BY 4.0, CC0 1.0)",
 "OccurrenceStatus is Present",
 "TaxonKey is Plantae"
 ]
}

 The dataset includes 7325913 records from 557 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005276-260221153910048/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.2bbewf
title: Occurrence Download

description: A dataset containing 367 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Acokanthera oblongifolia (Hochst.) Benth. & Hook.fil. ex B.D.Jacks."
 ]
}

 The dataset includes 367 records from 66 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0033986-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.x3w6ey
title: Occurrence Download

description: A dataset containing 23378237 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is iNaturalist Research-grade Observations"
 ]
}

 The dataset includes 23378237 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0179968-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.6ji7tv
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0056814-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5xlsw8
title: Occurrence Download

description: A dataset containing 32 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 32 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0007586-180824113759888/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.t97ch3
title: Occurrence Download

description: A dataset containing 67725 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Patterns of widespread decline in North American bumble bees"
 ]
}

 The dataset includes 67725 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0179996-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.u5xafy
title: Occurrence Download

description: A dataset containing 1300 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Achatocarpus praecox Griseb."
 ]
}

 The dataset includes 1300 records from 119 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0033939-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.qskbzy
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0026429-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.atdqsz
title: Occurrence Download

description: A dataset containing 32 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 32 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0048308-180508205500799/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.u6jtvb
title: Occurrence Download

description: A dataset containing 52 species occurrences available in GBIF matching the query:
{
 "and" : [
 "OccurrenceStatus is Present",
 "TaxonKey is Terminalia amazonica (J.F.Gmel.) Exell"
 ]
}

 The dataset includes 52 records from 20 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0180318-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wq9b7p
title: Occurrence Download

description: A dataset listing the 23 species recorded in GBIF matching the query:
{
 "TaxonKey" : [
 "is Castor canadensis Kuhl, 1820"
 ]
}

 The dataset's 23 records were derived from 181 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034013-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.g6sh4y
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0052406-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.jkoxc0
title: Occurrence Download

description: A dataset containing 32 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 32 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0018228-190621201848488/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.cedsdv
title: Occurrence Download

description: A dataset containing 3393 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Ipomoea violacea L."
 ]
}

 The dataset includes 3393 records from 156 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0033981-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.cp9pjn
title: Occurrence Download

description: A dataset containing 2007 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
 "Geometry POLYGON((0.69603 46.31365,0.88485 46.31365,0.88485 46.47084,0.69603 46.47084,0.69603 46.31365))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "PublishingOrg is 1928bdf0-f5d2-11dc-8c12-b8a03c50a862",
 "TaxonKey is Plantae"
 ]
}

 The dataset includes 2007 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0223179-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.3ljjfe
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0056818-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.37832q
title: Occurrence Download

description: A dataset containing 5606 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Kadenia dubia (Schkuhr) Lavrova & V.N.Tikhom."
 ]
}

 The dataset includes 5606 records from 138 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034019-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.yixmav
title: Occurrence Download

description: A dataset containing 32 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 32 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0036765-180508205500799/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.7evfk4
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0057123-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.bt8jtx
title: Occurrence Download

description: A dataset containing 5866 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((74.38645 30.42558,126.88022 30.42558,126.88022 59.1911,74.38645 59.1911,74.38645 30.42558))",
 "TaxonKey is Sanguisorba officinalis L."
 ]
}

 The dataset includes 5866 records from 62 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034074-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wvw7hh
title: Occurrence Download

description: A dataset containing 32 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 32 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021979-190621201848488/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.kbbflh
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0057131-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.9dnjkr
title: Occurrence Download

description: A dataset containing 74701 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Castor canadensis Kuhl, 1820"
 ]
}

 The dataset includes 74701 records from 181 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0034014-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wutqeh
title: Occurrence Download

description: A dataset containing 32 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 32 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0012592-180824113759888/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.koriql
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is (Table 1) Proportion of Toxoplasma gondii seropositive arctic foxes (Alopex lagopus) by age group and geographic area"
 ]
}

 The dataset includes 8 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0026524-160910150852091/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.x2wj2r
title: Occurrence Download

description: A dataset containing 1545033691 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 1545033691 records from 26924 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0180085-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5517/cc9nxc6
title: CCDC 288218: Experimental Crystal Structure Determination

description: Related Article: R.P.John, Kyungjae Lee, Beom Jin Kim, Byoung Jin Suh, Hackjune Rhee, Myoung Soo Lah|2005|Inorg.Chem.|44|7109|doi:10.1021/ic050891h
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc9t6hs
title: CCDC 292345: Experimental Crystal Structure Determination

description: Related Article: Xiang Hao, S.Parkin, C.P.Brock|2005|Acta Crystallogr.,Sect.B:Struct.Sci.|61|689|doi:10.1107/S0108768105031356
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc9nxd7
title: CCDC 288219: Experimental Crystal Structure Determination

description: Related Article: R.P.John, Kyungjae Lee, Beom Jin Kim, Byoung Jin Suh, Hackjune Rhee, Myoung Soo Lah|2005|Inorg.Chem.|44|7109|doi:10.1021/ic050891h
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/cc9nxf8
title: CCDC 288220: Experimental Crystal Structure Determination

description: Related Article: R.P.John, Kyungjae Lee, Beom Jin Kim, Byoung Jin Suh, Hackjune Rhee, Myoung Soo Lah|2005|Inorg.Chem.|44|7109|doi:10.1021/ic050891h
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.