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126526 results found

librla: A library of randomized linear algebra routines

Data provided by  National Institute of Standards and Technology

A unified, multi-language library implementing randomized algorithms for low-rank matrix factorizations of both real and complex matrices. The library provides efficient randomized sketching-based methods for large-scale matrix decompositions with consistent APIs across Python, MATLAB/Octave, and Julia.

Tags: Randomized methods,QR factorization,singular value decomposition,interpolatory decomposition,python,Matlab/Octave,julia

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Facial feature prioritization by forensic specialists

Data provided by  National Institute of Standards and Technology

This dataset contains behavioral data from 27 facial identification specialists over 24 experimental trials. In each trial, participants were presented with two face images of different identities and a third, initially occluded image matching the identity of one of the two images. Participants revealed facial features one by one on the occluded image until a matching decision could be made. A points system penalized both incorrect guesses and revealing more than one feature to encourage parsimonious revealing.

Tags: biometric research,decision making,face recognition,feature comparison,forensic examiners,Forensic Science,forensics,information sampling

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Chromatography-free triple quadrupole and time-of-flight mass spectrometry data for system characterization and exploring illicit drug identification

Data provided by  National Institute of Standards and Technology

This data publication contains the extracted mass spectra and derived data (e.g., extracted ion chronogram peak areas) for illicit drug and mixture samples. These samples were analyzed direct analysis in real time (DART) ionization with a benchtop triple quadrupole (TQ) mass spectrometer. Related measurements and data were also gathered on a laboratory time-of-flight (TOF) mass spectrometer.

Tags: Mass spectrometry; triple quadrupole; time-of-flight; fieldable; transportable; drugs; narcotics; forensics; public health;

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2024 Geography Information

Data provided by  United States Census Bureau

This dataset will provide users with all geography levels for a given year as well as longitude/latitude and area (land and water) geographic information if available.

Tags: census

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Source: http://api.census.gov/data/2024/geoinfo

2024 Geography Information

Data provided by  United States Census Bureau

This dataset will provide users with all geography levels for a given year as well as longitude/latitude and area (land and water) geographic information if available.

Tags: census

Modified:

Source: http://api.census.gov/data/2024/geoinfo

Data for "Tungsten Germanide Superconducting Nanowire Single-Photon Detectors with Saturated Internal Detection Efficiency at Wavelengths up to 29 µm"

Data provided by  National Institute of Standards and Technology

Numerical values of all data points shown in figures for manuscript "Tungsten Germanide Superconducting Nanowire Single-Photon Detectors with Saturated Internal Detection Efficiency at Wavelengths up to 29 µm", submitted for publication and available on arXiv (https://arxiv.org/abs/2511.20868)

Tags: SNSPD,single-photon detectors,mid-infrared,superconducting detector,tungsten germanide

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Simultaneous Detection, Demodulation, and Angle-of-Arrival Determination of Communication Signals Using a Direct-Conversion Rydberg Receiver

Data provided by  National Institute of Standards and Technology

Data in the figures for the paper "Simultaneous Detection, Demodulation, and Angle-of-Arrival Determination of Communication Signals Using a Direct-Conversion Rydberg Receiver". This is mostly experimental data collected by digitizers and oscilloscopes from photodetectors.

Tags: Rydberg atoms,atomic physics,receivers,fields strength,electric field,volts/meter

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Economic Census: Finance and Insurance: Brokering and Dealing Products Income for the U.S.: 2022

Data provided by  United States Census Bureau

This dataset presents statistics for Finance and Insurance: Brokering and Dealing Products Income for the U.S.

Tags: census

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Source: http://api.census.gov/data/2022/ecnbranddeal

Economic Census: Finance and Insurance: Brokering and Dealing Products Income for the U.S.: 2022

Data provided by  United States Census Bureau

This dataset presents statistics for Finance and Insurance: Brokering and Dealing Products Income for the U.S.

Tags: census

Modified:

Source: http://api.census.gov/data/2022/ecnbranddeal

Economic Census: Finance and Insurance: Credit Card Products Income for the U.S.: 2022

Data provided by  United States Census Bureau

This dataset presents statistics for Finance and Insurance: Credit Card Products Income for the U.S.

Tags: census

Modified:

Source: http://api.census.gov/data/2022/ecnccard