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Evidence & Conclusion Ontology development site: Use ISSUES to request terms. See WIKI for how to request terms. See README for how to cite ECO. Visit our website for more project info.

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ECO is free for all to use without restriction: see CC0 information below.

If you use ECO in your work, please consider citing ECO. We appreciate the attribution.

Please cite our most recent paper, PMID 34986598: Nadendla S, Jackson R, Munro J, Quaglia F, Mészáros B, Olley D, Hobbs ET, Goralski SM, Chibucos M, Mungall CJ, Tosatto SCE, Erill I, Giglio MG. (2022) ECO: the Evidence and Conclusion Ontology, an update for 2022.. Nucleic Acids Research. gkab1025.

Follow @ecoontology on Twitter and check out the ECO website evidenceontology.org.

ABOUT ECO

The Evidence & Conclusion Ontology (ECO) describes types of scientific evidence within the biological research domain that arise from laboratory experiments, computational methods, literature curation, or other means. Researchers use evidence to support conclusions that arise out of scientific research. Documenting evidence during scientific research is essential, because evidence gives us a sense of why we believe what we think we know. Conclusions are asserted as statements about things that are believed to be true, for example that a protein has a particular function (i.e. a protein functional annotation) or that a disease is associated with a particular gene variant (i.e. a phenotype-gene association). A systematic and structured (i.e. ontological) classification of evidence allows us to store, retreive, share, and compare data associated with that evidence using computers, which are essential to navigating the ever-growing (in size and complexity) corpus of scientific information.

ECO is an ontology comprising two root (upper-level) classes, 'evidence' and 'assertion method', where 'evidence' is defined as "a type of information that is used to support an assertion" and 'assertion method' is defined as "a means by which a statement is made about an entity." Together 'evidence' and 'assertion method' can be combined to describe both the supporting evidence for an assertion (such as a gene product annotation) and the agent who made the assertion, i.e. a human being or a computer. However, ECO can not be used to make an assertion itself; for that, one would use some other means, such as another ontology, controlled vocabulary, or [less desirably] a free text description.

ECO was originally created around the year 2000 to support Gene Ontology (GO) gene product annotations. GO continues to use ECO, now in the AmiGO2 browser, Noctua web-based tool, and other applications. Today, many projects use ECO to document evidence information in scientific research, including protein & gene resources, model organism databases, software applications, phenotype projects, and more. ECO collaborates with the Ontology for Biomedical Investigations Consortium in order to achieve harmonious interactions. ECO is committed to the principles established by the Open Biological and Biomedical Ontologies Foundry (OBO Foundry).


DEVELOPMENT INFORMATION

If you want to help grow ECO for your own project please contact us via the GitHub Issue tracker. If you are new to ECO, please take a look at our Rules for New Term Requests on the ECO website or on the ECO GitHub wiki... and thanks!

When you contribute your knowledge to ECO, everyone benefits.

For advice on requesting new terms, please see the ECO GitHub wiki.

For information about editing & releases, please see the GitHub editors README file.

For further information including history, detailed discussion of evidence, and a complete bibliography, please visit the Evidence & Conclusion Ontology website.


LICENSING INFORMATION

ECO is released into the public domain under CC0 1.0 Universal (CC0 1.0). Anyone is free to copy, modify, or distribute the work, even for commercial purposes, without asking permission. Please see the Public Domain Dedication for an easy-to-read description of CC0 1.0 or the full legal code for more detailed information. To get a sense of why ECO is CC0 as opposed to licensed under CC-BY, please read this thoughtful discussion on the OBO Foundry GitHub site.


PUBLICATIONS ABOUT ECO

Please cite PMID 34986598: Nadendla S, Jackson R, Munro J, Quaglia F, Mészáros B, Olley D, Hobbs ET, Goralski SM, Chibucos M, Mungall CJ, Tosatto SCE, Erill I, Giglio MG. (2022) ECO: the Evidence and Conclusion Ontology, an update for 2022.. Nucleic Acids Research. gkab1025.

Selected bibliography:

Giglio M, Tauber R, Nadendla S, Munro J, Olley D, Ball S, Mitraka E, Schriml LM, Gaudet P, Hobbs ET, Erill I, Siegele DA, Hu JC, Mungall C, and Chibucos MC. (2019) ECO, the Evidence & Conclusion Ontology: community standard for evidence information. Nucleic Acids Research. gky1036.

Tauber R & Chibucos MC. (2017) Logical axiomatization of the Evidence & Conclusion Ontology (ECO) by integrating external ontology classes, in Proceedings of the 8th International Conference on Biomedical Ontology (ICBO 2017), September 13-15, 2017, Newcastle-upon-Tyne, United Kingdom. Edited by: Matthew Horridge, Phillip Lord, Jennifer D. Warrender.

Tauber R & Chibucos MC. (2017) Refactoring the evidence and conclusion ontology by harmonizing with the ontology for biomedical investigations. Poster presented at the 10th International Biocuration Conference, March 26-29, 2017. Stanford University, CA.

Chibucos MC, Hu JC, Siegele DA, Giglio M. (2016) The Evidence and Conclusion Ontology (ECO): Supporting GO Annotations. In Christophe Dessimoz & Nives Škunca (eds.), The Gene Ontology Handbook, Methods in Molecular Biology, vol. 1446, pp. 245-259. New York City: Humana Press (Springer). ISBN:978-1-4939-3743-1.

Chibucos MC, Nadendla S, Munro JB, Mitraka E, Olley D, Vasilevsky NA, Brush MH, Giglio M. (2016) Supporting database annotations and beyond with the Evidence & Conclusion Ontology (ECO), in Proceedings of the Joint International Conference on Biological Ontology and BioCreative, August 1-4, 2016, Corvalis, OR, USA. Edited by: Pankaj Jaiswal, Robert Hoehndorf, Cecilia Arighi, Austin Meier.

Chibucos MC, Mungall CJ, Balakrishnan R, Christie KR, Huntley RP, White O, Blake JA, Lewis SE, and Giglio M. (2014) Standardized description of scientific evidence using the Evidence Ontology (ECO). Database. Vol. 2014: article ID bau066. PMID:25052702.


FUNDING ACKNOWLEDGEMENT

This material (the ontology & related resources) is based upon work supported by the National Science Foundation Division of Biological Infrastructure under Award Number 1458400 to Dr. Michelle Giglio, Principal Investigator (PI). Dr. Marcus Chibucos served as PI before that.

Prior development was supported in part by National Institutes of Health/National Institute of General Medical Sciences under Grant Number 2R01GM089636 and by Dr. Owen White.

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Evidence & Conclusion Ontology development site: Use ISSUES to request terms. See WIKI for how to request terms. See README for how to cite ECO. Visit our website for more project info.

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