cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.25549/whit-m4356
title: Safety bus for postcards, Southern California, 1935

description: 2 photographs of photograph of truck, Southern California, 1935. "Subject: Copies of Safety bus for postcards; Client: Square D. Elec[trical] Co[mpany], Sinclair, 1318 E[ast] 16 st[reet]; Original Print Order: 1000 ea[ch]; Size: Postcards at $20.00 ea[ch]; Mount: 40.00; Year: 1935; Job: 10-25-211" -- on envelope front. "Copies: @1.00 & size; Amount: 2.00; Extra Charges: Sinclair" -- on envelope back.
DOI: 10.25549/whit-c170-78380
title: DW-1935-10-27-224
DOI: 10.25549/whit-m8693
title: Salvation Army group, Southern California, 1932

description: 3 photographs of Salvation Army group at California Breakfast Club, Southern California, 1932. "Subject: Salvation Army Group; Client: Calif[ornia] Breakfast Club; Original Print Order: 1 #1, 1 ea[ch]; Re-Order: 1 #1, 1 ea[ch] #1, 2; Size: 8x10, 11x14; Finish: gl[ossy], dull; Mount: no margin; Year: 1932; Job: 2-23-137" -- on envelope front. "Operator's Report Name: Dick; 3 Original Photographs - Size: 8x10 gl[ossy]; Amount: 3.00; Extra Charges: Mrs. Case" -- on envelope back.
DOI: 10.25549/whit-m3571
title: County Hospital, Los Angeles, CA, 1932

description: 2 photographs of construction on County Hospital, Los Angeles, CA, 1932. "Subject: County Hospital; Client: American Sterilizer Co.; Original Print Order: 1 ea[ch]; Re-Order: 1 #2; Size: 8 1/2x11; Finish: gl[ossy]; Mount: linen; Year: 1932; Job: 5-21-184" -- on envelope front. Operator's Report Name: Frank; 2 Original Photographs - Size: 8 1/2x11; Amount: 3.50; 1 Ounces of Flash Powder, .85" -- on envelope back.
DOI: 10.25549/whit-m4358
title: County Hospital, Los Angeles, CA, 1932

description: 3 photographs of construction on County Hospital, Los Angeles, CA, 1932. "Subject: County Hospital; Client: Metal Door & Frame Co.; Original Print Order: 1 ea[ch]; Size: 8 1/2x11; Finish: gl[ossy]; Mount: linen; Year: 1932; Job: 7-24-136" -- on envelope front. "Operator's Report (Name): Frank; 3 Original Photographs - Size: 8 1/2x11; Amount: 4.50; 1 Ounces Of Flash Powder, .85" -- on envelope back.
DOI: 10.25549/whit-m6122
title: Loaf of bread in cellophane, Southern California, 1932

description: 3 photographs of a loaf of bread, Southern California, 1932. "Subject:  Loaf of Bread in Cellophane, see also 8x10 neg[ative]s; Agency: Scholts Adv[ertising]; Client: Weber Baking Co[mpany]; Original Print Order: 1 ea[ch], 1 #4; Size: 5x7, 11x14; Finish: gl[ossy]; Job: 7-28-156; Year: 1932" -- on envelope front. "Operator's Report Name: Dick; 4 Original Photographs -At Studio: 8x10, incl[ude] 10%; Amount: 10.00; Extra Charges: 2299 Scholts" -- on envelope back.
DOI: 10.25549/whit-m6355
title: Hydrometer tests of triton & sludge from other oils, Southern California, 1935

description: 7 photographs of hydrometer tests of triton & sludge from other oils, Southern California, 1935. "Subject: Hydrometer tests of triton & sludge from other oils; Client: Union Oil Co.; Original Print Order: 1 ea[ch], 2 ea[ch], 1 #1, 1 #5; Size: 5x7, 8x10, 11x14; Finish: gl[ossy]; Mount: For files, no circle, enlarge tube on left to 5 3/8" [ilg], as before; #1, 2, 3, 4, are to be printed then circle as mask; Year: 1935; Job: 1-18-97" -- on envelope front. "Operator's Report Name: Dick; 7 Original Photographs - Size: 8x10; Amount: 21.00, 2x80; Extra Charges: Stromheyer" -- on envelope back.
DOI: 10.25549/whit-m7072
title: Tests at Los Angeles Testing Laboratory, Los Angeles, CA, 1932

description: 7 photographs of men performing tests at Los Angeles Testing Laboratory, Los Angeles, CA, 1932. "Subject: Tests at L[os] A[ngeles] Testing Laboratory; Client: The May Co.; Original Print Order: 2 ea[ch]; Size: 8x10; Finish: gl[ossy]; Year: 1932; Job 7-14-70" -- on envelope front. "Operator's Report (Name): Dick; 7 Original Photographs - Size: 8x10; 7 automobiles, 6 h[ou]r[s] @ 3.00, 20.00, 18.00; Amount: $42.00, Extra Charges: Bishop" -- on envelope back.
DOI: 10.25549/whit-m10378
title: Scenes on the beach, Pacific Palisades, Los Angeles, CA, 1932

description: 14 photographs of men, women, and children on beach, Pacific Palisades, Los Angeles, CA, 1932. "Subject: scenes on the beach; Client: Bel Air Bay Club; Classifications: M - misc[ellaneous] beach shot; Original Print Order: 1 ea[ch]; Size: 8x10; Finish: gl[ossy]; Re-order: 1 ea[ch] #1, 5, 1#2, 2#1; Year: 1932; Job: 25-23-133" -- on envelope front. "Operator's Report Name: Dick; 13 Original Photographs-Size: 8x10; charge Hopper; Amount: 2.00, 18.00; Extra Charges: Burtnett" -- on envelope back.
DOI: 10.25549/whit-m8886
title: Alley drive-way at Main Street and Slauson Avenue, Los Angeles, CA, 1935

description: Photograph of road and billboard, Main Street and Slauson Avenue, Los Angeles, CA, 1935. "Subject: alley drive-way at Main & Slauson- Carlucci case; Client: J.P. McHale Co[mpany], Folger; Original Print Order: 2; Size: 8x10; Finish: gl[ossy]; Year: 1935; Job: 6-5-30"-- on envelope front. "Name: Dean; Original Photographs-Size: 1-8x10 ext.; Amount: 3.00"-- on envelope back.
DOI: 10.25549/whit-m5450
title: Movie camera with models & in studio, Southern California, 1931

description: 5 photographs of woman with movie camera filming child and dog, Southern California, 1931. "Subject: Movie Camera with models & in studio; Client: V.W. Robertson Co., Mr. Welch; Original Print Order: 1 ea[ch] #5,3,2,1, 1#4; Size: 11x14, 8x10; Finish: gl[ossy]; Year: 1931; Job: 6-1-2" -- on envelope front. "Operator's Report Name: Dick; 1 Original Photographs-At Studio: 8x10; 4 Original Photographs-Size: 11x14; Amount: 2.00, 5.00, 11.00; 4 Hours; Model: 1-Mother 1-child; Extra Charges: Welch" -- on envelope back.
DOI: 10.25549/whit-m10404
title: Wrecked Packard at Ace Auto Works, 1211 West Pico Boulevard, Los Angeles, CA, 1931

description: 3 photographs of wrecked Packard automobile at Ace Auto Works, 1211 West Pico Boulevard, Los Angeles, CA, 1931. "Subject: Wrecked Packard at Ace Auto w[or]ks, 1211 W[est] Pico; Client: Pacific Employers Ins[urance] Co., 922 So[uth] Figueroa, Brown; Original Print Order: 1 ea[ch]; Size: 8x10; Finish: gl[ossy]; Year: 1931; Job: 5-11-83" -- on envelope front. "Name: Frank; 3 - 8x10; In City: 3.00; 2 Ounces of Flash Powder @0.85: 1.70; Extra Charges: #5255 Mr. Brown" -- on envelope back.
DOI: 10.25549/whit-m3188
title: DW-1926-04-05-06A
DOI: 10.25549/whit-m4248
title: 1509 Portia Street, Los Angeles, CA, 1926

description: 2 photographs of exterior of 1509 Portia Street, Los Angeles, CA, 1926. "Subject: 1509 Portia St[reet]; Client: O'Connor; Year: 1926; Job: 6-4-12" -- on envelope.
DOI: 10.6084/m9.figshare.18796517
title: Hourly location, current velocity, and temperature derived from Global Drifter Program drifters from 1987-10-02 to 2020-06-30

description: Hourly location, current velocity, and sea surface temperature estimates derived from Global Drifter Program drifters from 1987-10-02 to 2020-06-30.
DOI: 10.6084/m9.figshare.18796517.v1
title: Hourly location, current velocity, and temperature derived from Global Drifter Program drifters from 1987-10-02 to 2020-06-30

description: Hourly location, current velocity, and sea surface temperature estimates derived from Global Drifter Program drifters from 1987-10-02 to 2020-06-30.
DOI: 10.25549/cpd-c119-925
title: EU public diplomacy: adapting to an ever-changing world, 2019

description: Bianca Baumler. EU public diplomacy: adapting to an ever-changing world. Los Angeles, California: University of Southern California. Annenberg School for Communication and Journalism. Center on Public Diplomacy (CPD Perspectives on public policy, 2019, paper 2), 2019.
DOI: 10.25549/cpd-c119-646
title: The floating tree: crafting resilient state narratives in post-truth environments the case of Georgia, 2017

description: Vivian S. Walker. The floating tree: crafting resilient state narratives in post-truth environments the case of Georgia. Los Angeles, California: University of Southern California. Annenberg School for Communication and Journalism. Center on Public Diplomacy (CPD Perspectives on public policy, 2017, paper 3), 2017.
DOI: 10.25549/cpd-c119-3379
title: Centers of gravity in public diplomacy 2.0: a case study of U.S. efforts in South Africa, 2015

description: Amelia Arsenault. Centers of gravity in public diplomacy 2.0: a case study of U.S. efforts in South Africa. Los Angeles, California: University of Southern California. Annenberg School for Communication and Journalism. Center on Public Diplomacy (CPD Perspectives on public policy, 2015, paper 5), 2015.
DOI: 10.25549/cpd-c119-2899
title: The power of the European Union in global governance: a proposal for a new public diplomacy, 2011

description: Teresa La Porte. The power of the European Union in global governance: a proposal for a new public diplomacy. Los Angeles, California: University of Southern California. Annenberg School for Communication and Journalism. Center on Public Diplomacy (CPD Perspectives on public policy, 2011, paper 1), 2011.
DOI: 10.25549/cpd-c119-1445
title: Democratization through public diplomacy: an analysis of the European parliament's reaction to the Arab Spring, 2015

description: Michael Reinprecht and Henrietta Levin. Democratization through public diplomacy: an analysis of the European parliament's reaction to the Arab Spring. Los Angeles, California: University of Southern California. Annenberg School for Communication and Journalism. Center on Public Diplomacy (CPD Perspectives on public policy, 2015, paper 6), 2015.
DOI: 10.25549/cpd-c119-1031
title: Canadian public diplomacy and nationbuilding: Expo 67 and the World Festival of Arts and Entertainment, 2016

description: Kailey Hansson. Canadian public diplomacy and nationbuilding: Expo 67 and the World Festival of Arts and Entertainment. Los Angeles, California: University of Southern California. Annenberg School for Communication and Journalism. Center on Public Diplomacy (CPD Perspectives on public policy, 2016, paper 3), 2016.
DOI: 10.5281/zenodo.5875992
title: Dynamic Spectra cutouts

description: Dynamic Spectra cutouts B0531+21.fil is a cutout from https://zenodo.org/record/5256885
DOI: 10.5281/zenodo.5860556
title: Dynamic Spectra cutouts

description: Dynamic Spectra cutouts B0531+21.fil is a cutout from https://zenodo.org/record/5256885
DOI: 10.25549/uschist-c104-221956
title: USC chronicle, vol. 15, no. 25 (1996 Mar. 25)
title: University of Southern California chronicle, vol. 15, no. 25 (1996 Mar. 25)

description: University of Southern California chronicle, volume 15, number 25 (1996 March 25). Published for the faculty & staff. Published weekly on Mondays, September throught April (except the week of Thanksgiving, two weeks before and after Christmas, and the week of spring break); and biweekly May through June.
DOI: 10.25549/uschist-c104-262960
title: USC chronicle, vol. 17, no. 12 (1997 Nov. 17)
title: University of Southern California chronicle, vol. 17, no. 12 (1997 Nov. 17)

description: University of Southern California chronicle, volume 17, number 12 (1997 November 17). Published for the faculty & staff. Published weekly on Mondays, September throught April (except the week of Thanksgiving, two weeks before and after Christmas, and the week of spring break); and biweekly May through June.
DOI: 10.25549/uschist-c104-262843
title: USC chronicle, vol. 17, no. 2 (1997 Sept. 8)
title: University of Southern California chronicle, vol. 17, no. 2 (1997 Sept. 8)

description: University of Southern California chronicle, volume 16 [sic, i.e. 17], number 2 (1997 September 8). Published for the faculty & staff. Published weekly on Mondays, September throught April (except the week of Thanksgiving, two weeks before and after Christmas, and the week of spring break); and biweekly May through June.
DOI: 10.25549/uschist-c104-264567
title: USC chronicle, vol. 21, no. 18 (2002 Feb. 11)
title: University of Southern California chronicle, vol. 21, no. 18 (2002 Feb. 11)

description: University of Southern California chronicle, volume 21, number 18 (2002 February 11). Published for the faculty & staff. Published weekly on Mondays, September throught April (except the week of Thanksgiving, two weeks before and after Christmas, and the week of spring break); and biweekly May through June.
DOI: 10.25549/uschist-c104-263383
title: USC chronicle, vol. 18, no. 12 (1998 Nov. 16)
title: University of Southern California chronicle, vol. 18, no. 12 (1998 Nov. 16)

description: University of Southern California chronicle, volume 18, number 12 (1998 November 16). Published for the faculty & staff. Published weekly on Mondays, September throught April (except the week of Thanksgiving, two weeks before and after Christmas, and the week of spring break); and biweekly May through June.
DOI: 10.25549/uschist-c104-263733
title: USC chronicle, vol. 19, no. 6 (1999 Oct. 4)
title: University of Southern California chronicle, vol. 19, no. 6 (1999 Oct. 4)

description: University of Southern California chronicle, volume 19, number 6 (1999 October 4). Published for the faculty & staff. Published weekly on Mondays, September throught April (except the week of Thanksgiving, two weeks before and after Christmas, and the week of spring break); and biweekly May through June.
DOI: 10.25549/uschist-c104-262826
title: USC chronicle, vol. 17, no. 1 (1997 Sept. 1)
title: University of Southern California chronicle, vol. 17, no. 1 (1997 Sept. 1)

description: University of Southern California chronicle, volume 17, number 1 (1997 September 1). Published for the faculty & staff. Published weekly on Mondays, September throught April (except the week of Thanksgiving, two weeks before and after Christmas, and the week of spring break); and biweekly May through June.
DOI: 10.25549/uschist-c104-264651
title: USC chronicle, vol. 21, no. 26 (2002 Apr. 15)
title: University of Southern California chronicle, vol. 21, no. 26 (2002 Apr. 15)

description: University of Southern California chronicle, volume 21, number 26 (2002 April 15). Published for the faculty & staff. Published weekly on Mondays, September throught April (except the week of Thanksgiving, two weeks before and after Christmas, and the week of spring break); and biweekly May through June.
DOI: 10.25549/uschist-c104-262500
title: USC chronicle, vol. 16, no. 11 (1996 Nov. 11)
title: University of Southern California chronicle, vol. 16, no. 11 (1996 Nov. 11)

description: University of Southern California chronicle, volume 16, number 11 (1996 November 11). Published for the faculty & staff. Published weekly on Mondays, September throught April (except the week of Thanksgiving, two weeks before and after Christmas, and the week of spring break); and biweekly May through June.
DOI: 10.5281/zenodo.5884908
title: SD-WACCM-X 2020-2021 Sudden Stratospheric Warming

description: Simulation output from the Specified Dynamics version of the Whole Atmosphere Community Climate Model with thermosphere-ionosphere eXtension (SD-WACCM-X) for the 2020-2021 sudden stratospheric warming (SSW) event. Included output are the meridional and zonal winds, neutral temperatures, and total electron content (TEC). Simulations were performed using realistic, time-varying, solar and geomagnetic activity parameterized by F10.7 and Kp.
description: Data files in support of publication "Ionosphere Variability During the 2020-2021 SSW: COSMIC-2 Observations and WACCM-X Simulations"
DOI: 10.5281/zenodo.5884907
title: SD-WACCM-X 2020-2021 Sudden Stratospheric Warming

description: Simulation output from the Specified Dynamics version of the Whole Atmosphere Community Climate Model with thermosphere-ionosphere eXtension (SD-WACCM-X) for the 2020-2021 sudden stratospheric warming (SSW) event. Included output are the meridional and zonal winds, neutral temperatures, and total electron content (TEC). Simulations were performed using realistic, time-varying, solar and geomagnetic activity parameterized by F10.7 and Kp.
description: Data files in support of publication "Ionosphere Variability During the 2020-2021 SSW: COSMIC-2 Observations and WACCM-X Simulations"
DOI: 10.5281/zenodo.5847717
title: WWV and CHU Eclipse Frequency Measurement

description: Recordings of WWV (2.5 MHz, 5.0 MHz) and CHU (3.33 MHz) for the December 2021 Eclipse Festival of Frequency Measurement <strong>Name, Callsign:</strong> William Breidenthal, KE6XO<br> <strong>Latitude and Longitude:</strong> 40°03'33"N 105°12'32"W <br> <strong>Elevation:</strong> 1564 meters<br> <strong>Start time of the analysis:</strong> November 31, 2021 07:04:56 UTC<br> <strong>Stop time of the analysis:</strong> January 12, 2022 08:00:00 UTC<br> <strong>GPSDO:</strong> Yes <strong>Hardware Description:</strong> Antenna: MLA-30+ Magnetic Loop Antenna pointing direction: North/South Receiver Type: Ettus Research USRP2 with BasicRX Daughterboard Frequency reference type: GPSDO 10 MHz (Masterclock MCR1000) Frequency Measurement Technique: ccera-astro/wwv_doppler with GNU Radio <strong>Notes:</strong> Measurements recorded 70 km away from WWV in Boulder, CO. Some data is missing due to power outages. wwv_doppler was modified to add a 3rd channel to simultaneously record CHU.
DOI: 10.5281/zenodo.5847716
title: WWV and CHU Eclipse Frequency Measurement

description: Recordings of WWV (2.5 MHz, 5.0 MHz) and CHU (3.33 MHz) for the December 2021 Eclipse Festival of Frequency Measurement <strong>Name, Callsign:</strong> William Breidenthal, KE6XO<br> <strong>Latitude and Longitude:</strong> 40°03'33"N 105°12'32"W <br> <strong>Elevation:</strong> 1564 meters<br> <strong>Start time of the analysis:</strong> November 31, 2021 07:04:56 UTC<br> <strong>Stop time of the analysis:</strong> January 12, 2022 08:00:00 UTC<br> <strong>GPSDO:</strong> Yes <strong>Hardware Description:</strong> Antenna: MLA-30+ Magnetic Loop Antenna pointing direction: North/South Receiver Type: Ettus Research USRP2 with BasicRX Daughterboard Frequency reference type: GPSDO 10 MHz (Masterclock MCR1000) Frequency Measurement Technique: ccera-astro/wwv_doppler with GNU Radio <strong>Notes:</strong> Measurements recorded 70 km away from WWV in Boulder, CO. Some data is missing due to power outages. wwv_doppler was modified to add a 3rd channel to simultaneously record CHU.
DOI: 10.21994/loar7626
title: folketsavis1860 Batch 400027100390

description: folketsavis1860. Batch 400027100390. Roundtrip 2. 1860-01-01/1871-12-31. Pages: 15584.
DOI: 10.21994/loar7627
title: adresseavisen1759 Batch 400027101494

description: adresseavisen1759. Batch 400027101494. Roundtrip 1. 1847-01-01/1853-12-31. Pages: 21108.
DOI: 10.21994/loar7628
title: aeroesavis Batch 400027105619

description: aeroesavis. Batch 400027105619. Roundtrip 1. 1858-01-01/1858-12-31. Pages: 52.
DOI: 10.21994/loar7629
title: fredericiadagblad1890 Batch 400026956917

description: fredericiadagblad1890. Batch 400026956917. Roundtrip 2. 1881-01-01/1891-06-30. Pages: 2765.
DOI: 10.21994/loar7630
title: faedrelandet1834 Batch 400027100080

description: faedrelandet1834. Batch 400027100080. Roundtrip 2. 1834-01-01/1844-12-31. Pages: 9663.
DOI: 10.21994/loar7631
title: skivefolkeblad Batch 400027042218

description: skivefolkeblad. Batch 400027042218. Roundtrip 1. 1880-01-01/1895-12-31. Pages: 8046.
DOI: 10.21994/loar7632
title: faedrelandet1834 Batch 400027100307

description: faedrelandet1834. Batch 400027100307. Roundtrip 1. 1866-01-01/1872-12-31. Pages: 8541.
DOI: 10.21994/loar7633
title: fyensstiftstidende Batch 400027103691

description: fyensstiftstidende. Batch 400027103691. Roundtrip 2. 1844-01-01/1852-12-31. Pages: 11625.
DOI: 10.21994/loar7634
title: adresseavisen1759 Batch 400027101338

description: adresseavisen1759. Batch 400027101338. Roundtrip 1. 1791-01-01/1797-12-31. Pages: 16507.
DOI: 10.21994/loar7635
title: adresseavisen1759 Batch 400027101265

description: adresseavisen1759. Batch 400027101265. Roundtrip 2. 1865-01-01/1867-12-31. Pages: 6087.
DOI: 10.21994/loar7636
title: fyensstiftstidende Batch 400027103640

description: fyensstiftstidende. Batch 400027103640. Roundtrip 2. 1808-01-01/1819-12-31. Pages: 8786.
DOI: 10.21994/loar7637
title: adresseavisen1759 Batch 400027101486

description: adresseavisen1759. Batch 400027101486. Roundtrip 1. 1840-01-01/1846-12-31. Pages: 17163.
DOI: 10.21994/loar7638
title: berlingsketidende Batch 400027045888

description: berlingsketidende. Batch 400027045888. Roundtrip 1. 1852-07-01/1859-04-30. Pages: 18728.
DOI: 10.21994/loar7639
title: aarhusstiftstidende Batch 400026954310

description: aarhusstiftstidende. Batch 400026954310. Roundtrip 2. 1794-01-01/1847-12-31. Pages: 39510.
DOI: 10.21994/loar7640
title: viborgstiftsfolkeblad Batch 400027044679

description: viborgstiftsfolkeblad. Batch 400027044679. Roundtrip 2. 1877-01-01/1881-12-31. Pages: 5098.
DOI: 10.21994/loar7641
title: adresseavisen1759 Batch 400027101321

description: adresseavisen1759. Batch 400027101321. Roundtrip 2. 1798-01-01/1802-12-31. Pages: 15169.
DOI: 10.21994/loar7642
title: fynsamtsavissvendborg Batch 400027105287

description: fynsamtsavissvendborg. Batch 400027105287. Roundtrip 1. 1878-01-01/1890-12-31. Pages: 5352.
DOI: 10.21994/loar7643
title: adresseavisen1759 Batch 400027101621

description: adresseavisen1759. Batch 400027101621. Roundtrip 1. 1823-01-01/1826-12-31. Pages: 11968.
DOI: 10.21994/loar7644
title: koldingfolkeblad Batch 400027040071

description: koldingfolkeblad. Batch 400027040071. Roundtrip 1. 1872-01-01/1881-12-31. Pages: 12205.
DOI: 10.21994/loar7645
title: viborgstiftstidende Batch 400027044857

description: viborgstiftstidende. Batch 400027044857. Roundtrip 1. 1816-01-01/1839-12-31. Pages: 16989.
DOI: 10.6084/m9.figshare.18801092.v1
title: SNP marker data for the 203 chile pepper genotypes used for multi-locus association mapping.

description: HapMap data for 203 lines; 14,922 SNP markers<br>
DOI: 10.6084/m9.figshare.18801092
title: SNP marker data for the 203 chile pepper genotypes used for multi-locus association mapping.

description: HapMap data for 203 lines; 14,922 SNP markers<br>
DOI: 10.13026/g9wd-3j66
title: Will Two Do? Varying Dimensions in Electrocardiography: The PhysioNet/Computing in Cardiology Challenge 2021

description: The electrocardiogram (ECG) is a non-invasive representation of the electrical
activity of the heart. Although the twelve-lead ECG is the standard diagnostic
screening system for many cardiological issues, the limited accessibility of
twelve-lead ECG devices provides a rationale for smaller, lower-cost, and
easier to use devices. While single-lead ECGs are limiting, reduced-lead ECG
systems hold promise, with evidence that subsets of the standard twelve leads
can capture useful information and can even be comparable to twelve-lead ECGs
in some limited contexts. In 2017 we challenged the public to classify AF from
a single-lead ECG, and in 2020 we challenged the public to diagnose a much
larger number of cardiac problems using twelve-lead recordings. However, there
is limited evidence to demonstrate the utility of reduced-lead ECGs for
capturing a wide range of diagnostic information.

In this year's Challenge, we ask the following question: 'Will two do?' This
year's Challenge builds on last year's Challenge, which asked participants to
classify cardiac abnormalities from twelve-lead ECGs. We are asking you to
build an algorithm that can classify cardiac abnormalities from either twelve-
lead, six-lead, and two-lead ECGs. We will test each algorithm on databases of
twelve-lead, six-lead and two-lead ECGs, and the differences in performances
of the algorithms on these databases will reveal the utility of two-lead or
six-lead ECGs in comparison to standard twelve-lead EGCs.