cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.25047735.v1
title: GDP Solera: The Ideal Vintage Mix

description: We use the information in the successive vintages of GDE and GDI to obtain an improved timely measure of U.S. aggregate output by exploiting cointegration between the different measures taking seriously their monthly release calendar. We also combine all existing overlapping comprehensive revisions to achieve further improvements. We pay particular attention to the Great Recession and the COVID-19 pandemic, which, despite producing dramatic fluctuations, did not generate noticeable revisions in previous growth rates. Our results suggest that revised GDE estimates, unlike GDI ones, are increasingly precise and receive higher weights, but early estimates retain some influence.
DOI: 10.15468/dl.f23vm6
title: Occurrence Download

description: A dataset containing 10 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Iris nectarifera Güner"
 ]
}

 The dataset includes 10 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0254508-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.hgs2qy
title: Occurrence Download

description: A dataset containing 118 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Muhlenbergia breviseta E.Fourn."
 ]
}

 The dataset includes 118 records from 27 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043982-230530130749713/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.xxr89v
title: Occurrence Download

description: A dataset listing the 354146 species recorded in GBIF matching the query:
{
 "DatasetKey" : [
 "is iNaturalist Research-grade Observations"
 ]
}

 The dataset's 354146 records were derived from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0248083-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.6084/m9.figshare.24106994
title: On the Combination of Naive and Mean-Variance Portfolio Strategies

description: We study how to best combine the sample mean-variance portfolio with the naive equally weighted portfolio to optimize out-of-sample performance. We show that the seemingly natural convexity constraint—the two combination coefficients must sum to one—is undesirable because it severely constrains the allocation to the risk-free asset relative to the unconstrained portfolio combination. However, we demonstrate that relaxing the convexity constraint inflates estimation errors in combination coefficients, which we alleviate using a shrinkage estimator of the unconstrained combination scheme. Empirically, the constrained combination outperforms the unconstrained one in a range of generally small degrees of risk aversion, but severely deteriorates otherwise. In contrast, the shrinkage unconstrained combination enjoys the best of both strategies and performs consistently well for all levels of risk aversion.
DOI: 10.6084/m9.figshare.24106994.v1
title: On the Combination of Naive and Mean-Variance Portfolio Strategies

description: We study how to best combine the sample mean-variance portfolio with the naive equally weighted portfolio to optimize out-of-sample performance. We show that the seemingly natural convexity constraint—the two combination coefficients must sum to one—is undesirable because it severely constrains the allocation to the risk-free asset relative to the unconstrained portfolio combination. However, we demonstrate that relaxing the convexity constraint inflates estimation errors in combination coefficients, which we alleviate using a shrinkage estimator of the unconstrained combination scheme. Empirically, the constrained combination outperforms the unconstrained one in a range of generally small degrees of risk aversion, but severely deteriorates otherwise. In contrast, the shrinkage unconstrained combination enjoys the best of both strategies and performs consistently well for all levels of risk aversion.
DOI: 10.15468/dl.8qwpb9
title: Occurrence Download

description: A dataset containing 48 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Physaria grahamii C.V.Morton ex E.H.Graham"
 ]
}

 The dataset includes 48 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0064360-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.87wpkb
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Physaria integrifola (Rollins) Lichvar"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0064365-231120084113126/datasets/export for details.
DOI: 10.15468/dl.kzhdrj
title: Occurrence Download

description: A dataset containing 86 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Iris narbutii O.Fedtsch."
 ]
}

 The dataset includes 86 records from 19 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0254505-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.az6atc
title: Occurrence Download

description: A dataset containing 5 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Namibia",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "PublishingOrg is c5f7ef70-e233-11d9-a4d6-b8a03c50a862",
 "TaxonKey is Belenois aurota (Fabricius, 1793)"
 ]
}

 The dataset includes 5 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0248089-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.gs8b2v
title: Occurrence Download

description: A dataset containing 31 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Saphenophis boursieri (Jan, 1867)"
 ]
}

 The dataset includes 31 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0020977-230530130749713/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.eq2cm9
title: Occurrence Download

description: A dataset containing 132 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Physaria calderi (G.A.Mulligan & A.E.Porsild) O'Kane & Al-Shehbaz"
 ]
}

 The dataset includes 132 records from 21 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0064334-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.56ktvs
title: Occurrence Download

description: A dataset containing 17 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Iris ×nelsonii Randolph"
 ]
}

 The dataset includes 17 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0254511-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.tdzvr8
title: Occurrence Download

description: A dataset containing 30 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Muhlenbergia brandegeei C.Reeder"
 ]
}

 The dataset includes 30 records from 18 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043974-230530130749713/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ad2nq8
title: Occurrence Download

description: A dataset containing 36 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Namibia",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "PublishingOrg is c8d737e0-2ff8-42e8-b8fc-6b805d26fc5f",
 "TaxonKey is Belenois aurota (Fabricius, 1793)"
 ]
}

 The dataset includes 36 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0248079-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.yfw4dc
title: Occurrence Download

description: A dataset containing 31 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Physaria johnstonii (Rollins) O'Kane & Al-Shehbaz"
 ]
}

 The dataset includes 31 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0064369-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.4vukbs
title: Occurrence Download

description: A dataset containing 107 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Benthic core samples from Øvre Heimdalsvatn, Norway, 2000"
 ]
}

 The dataset includes 107 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021536-230530130749713/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5hwzuz
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Occurrence of mammalia relicts at site Starunia"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0020956-230530130749713/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vu2c63
title: Occurrence Download

description: A dataset containing 246 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Argentina",
 "TaxonKey is Cyperus esculentus L."
 ]
}

 The dataset includes 246 records from 31 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0248091-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.g6svm9
title: Occurrence Download

description: A dataset containing 2 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Physaria iveyana O'Kane, K.N.Sm. & K.A.Arp"
 ]
}

 The dataset includes 2 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0064368-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vph9g9
title: Occurrence Download

description: A dataset containing 40 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Iris nigricans Dinsm."
 ]
}

 The dataset includes 40 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0254519-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.fy3dqv
title: Occurrence Download

description: A dataset containing 69 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Holocheilus schulzii (Cabrera) Cabrera"
 ]
}

 The dataset includes 69 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0248101-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.kwefqs
title: Occurrence Download

description: A dataset containing 23389 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
 "Country is New Zealand",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Platycercus eximius (Shaw, 1792)",
 "Year 2018-2023"
 ]
}

 The dataset includes 23389 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0020957-230530130749713/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.56dc7c
title: Occurrence Download

description: A dataset containing 88 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Iris nicolai (Vved.) Vved."
 ]
}

 The dataset includes 88 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0254516-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.b2uf7v
title: Occurrence Download

description: A dataset containing 141 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Physaria klausii (Rollins) O'Kane & Al-Shehbaz"
 ]
}

 The dataset includes 141 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0064371-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.n5mkrb
title: Occurrence Download

description: A dataset containing 259 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Holocheilus illustris (Vell.) Cabrera"
 ]
}

 The dataset includes 259 records from 53 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0248090-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.fathfm
title: Occurrence Download

description: A dataset containing 568 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Muhlenbergia ligularis (Hack.) Hitchc."
 ]
}

 The dataset includes 568 records from 35 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043975-230530130749713/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vqnt5d
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Iris neoensata Y.N.Lee"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0254512-230224095556074/datasets/export for details.
DOI: 10.15468/dl.46u9mt
title: Occurrence Download

description: A dataset containing 191474 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Saxicola rubetra (Linnaeus, 1758))",
 "HasCoordinate is true",
 "DecimalLatitude is greater than or equal to 29.93667",
 "DecimalLatitude is less than or equal to 51.91193",
 "DecimalLongitude is greater than or equal to -14.67522",
 "DecimalLongitude is less than or equal to 39.79752",
 "BasisOfRecord is one of (Specimen, Human Observation, Observation)",
 "Year is greater than or equal to 1970",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present"
 ]
}

 The dataset includes 191474 records from 1040 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043988-230530130749713/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.40b5ez
title: Occurrence Download

description: A dataset containing 11 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Eulychnia acida var. procumbens F.Ritter"
 ]
}

 The dataset includes 11 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043552-180508205500799/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.fs4dnk
title: Occurrence Download

description: A dataset containing 97173 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Phaseolus vulgaris L.",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 97173 records from 339 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0005415-240130105604617/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.9j6jrd
title: Occurrence Download

description: A dataset containing 618612 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
 "Country is Indonesia",
 "TaxonKey is Aves"
 ]
}

 The dataset includes 618612 records from 15 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0001107-210819072339941/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.mk4bpy
title: Occurrence Download

description: A dataset containing 39 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Mexico",
 {
 "or" : [
 "DatasetKey is Etapa final de la captura y catalogación del Herbario del Instituto de Ecología, A.C., Centro Regional del Bajío",
 "DatasetKey is Tropicos MO Specimen Data",
 "DatasetKey is Inventario florístico de las Cactáceas del estado de Tamaulipas, México",
 "DatasetKey is Sukkulentensammlung Zürich",
 "DatasetKey is NMNH Extant Specimen Records (USNM, US)",
 "DatasetKey is Inventario florístico de los cerros San Martí y El Patol en el semidesierto queretano",
 "DatasetKey is UCBG TAPIR Provider",
 "DatasetKey is Lista florística preliminar de Tamaulipas",
 "DatasetKey is Flora vascular de la Sierra de las Candelas, Municipio Jerez de García Salinas, Zacatecas, México"
 ]
 },
 "HasCoordinate is true",
 {
 "or" : [
 "TaxonKey is Mammillaria compressa DC.",
 "TaxonKey is Mammillaria bernalensis Repp."
 ]
 },
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 39 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043553-180508205500799/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.g36p6y
title: Occurrence Download

description: A dataset containing 489 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "BasisOfRecord is Specimen",
 "BasisOfRecord is Material sample"
 ]
 },
 "Geometry POLYGON((41.24268 40.93506,49.85596 37.771,50.8667 43.04443,38.11157 45.10986,41.24268 40.93506))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Saxifraga L."
 ]
}

 The dataset includes 489 records from 18 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0095930-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vp2sq4
title: Occurrence Download

description: A dataset containing 3134 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Boletus aestivalis (Paulet) Fr."
 ]
}

 The dataset includes 3134 records from 115 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0082581-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.nds9dy
title: Occurrence Download

description: A dataset containing 21743 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "TaxonKey is Alternanthera philoxeroides (Mart.) Griseb.",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 21743 records from 120 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043553-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.f4twc3
title: Occurrence Download

description: A dataset containing 127 species occurrences available in GBIF matching the query:
{
 "and" : [
 "DecimalLatitude is greater than or equal to 54.5617",
 "DecimalLatitude is less than or equal to 63",
 "DecimalLongitude is greater than or equal to 4.63",
 "DecimalLongitude is less than or equal to 20",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 2010",
 "TaxonKey is one of (Dufourea dentiventris, Dufourea dentiventris (Nylander, 1848), Dufourea dentiventris (Nylander, 1848), Dufourea dentiventris (Nylander, 1848), 110197825, Dufourea dentiventris (Nylander, 1848), 130506049, 157834411, Dufourea dentiventris (Nylander, 1848), 161563096, Dufourea dentiventris (Nylander, 1848), Dufourea dentiventris (Nylander, 1848), Dufourea dentiventris (Nylander, 1848), Dufourea dentiventris (Nylander, 1848), Biastes truncatus (Nylander, 1848))"
 ]
}

 The dataset includes 127 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0095928-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.vaeyuv
title: Occurrence Download

description: A dataset containing 32 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Saponaria pumilio Boiss.",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 32 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0082589-231120084113126/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.meg9xd
title: Occurrence Download

description: A dataset containing 18390 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "BasisOfRecord is Human Observation",
 "BasisOfRecord is Specimen",
 "BasisOfRecord is Living Specimen"
 ]
 },
 "HasCoordinate is true",
 "TaxonKey is Arctotheca calendula (L.) Levyns",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 18390 records from 87 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0043554-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.8yj4uu
title: Occurrence Download

description: A dataset containing 31461 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Armadillidium vulgare (Latreille, 1804)"
 ]
}

 The dataset includes 31461 records from 227 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0223279-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.