#Radiocarbon #Statistics Starting From The Year Interval

https://aardvarchaeology.wordpress.com/2025/01/25/radiocarbon-statistics-starting-from-the-year-interval/

I have a #statistics question with regard to #radiocarbon calibration. Simply this: why should calibrated dates be reported with only two hard-coded percentages of the full probability distribution, one and two standard deviations respectively? It is pointless for archaeological purposes because it often creates discontinuous dating intervals.

We don't care that there may be an 11-year gap somewhere in the middle of a 120-year 1-sigma probability. We only look at the end dates.

New evidence for #Viking Period activity on Riddarholmen Island in #Stockholm, plus some technical discussion of #radiocarbon #statistics

https://aardvarchaeology.wordpress.com/2024/11/20/radiocarbon-in-the-ad-900s-on-riddarholmen/

#Radiocarbon insight: OxCal makes the hard-coded assumption that you want 1 sigma or 2 sigma. It offers no provision for those who want the calculate the percentage of a probability distribution that lies between year1 and year2.

Marking time: #CosmicRay storms can pin precise dates on #history from ancient Egypt to the Vikings | #Science | AAAS https://www.science.org/content/article/marking-time-cosmic-ray-storms-can-pin-precise-dates-history-ancient-egypt-vikings #archaeology #archeology #radiocarbon #dendrochronology

#UNSW #CHRONOS 14C facility is hiring a technician. Based at UNSW Kensington, working with their MICADAS AMS.

https://external-careers.jobs.unsw.edu.au/en/job/523062/technical-officer-radiocarbon

Closes TODAY.

C'mon @nytimes, that wasn't a "challenge" to scientific orthodoxy (whatever that means) - it's been clear from the very beginning that none of the #radiocarbon samples presented for an extremely old #pyramid at #GunungPadang came from archaeological contexts.

https://www.nytimes.com/2024/03/20/science/indonesia-oldest-pyramid-gunung-padang.html

Starting today, you can install iosacal with conda. This adds to the existing installation procedure with pip. Conda is a good fit for complex projects and has better tooling for reproducibility.

Installing iosacal can be achieved by adding conda-forge to your channels with:

conda config --add channels conda-forge conda config --set channel_priority strict

Once the conda-forge channel has been enabled, iosacal can be installed with conda:

conda install iosacal

or with mamba:

mamba install iosacal

https://steko.iosa.it/2024/03/install-iosacal-with-conda/

This is our #introduction post for all new followers. We are a grassroots research project investigating #Viking Age and #Medieval #archaeology #dogs and #horses in Ireland and Britain. We are using cutting edge technqiues like #aDNA , #isotopes, #bones measurements (size/shape analysis) and #radiocarbon dating on dog bone samples. Our website is www.vikingdublindogs.ie and we are running a crowdfunding campaign to raise costs of #dating at the moment. If you can help please do and please RToot