Help: How can I collect Retractions marked by Crossmark?

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Hello everyone
I would like to study some of the characteristics of Retractions marked by Crossmark. Is there any good way to collect relevant data? :sob: :sob: :sob:

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Hi Chen,

Crossmark updates are indexed in the metadata in our REST API. You can filter REST API queries to just those with Crossmark retractions using
filter=update-type:retraction

For example
https://api.crossref.org/works?filter=update-type:retraction

For more details on how to use the REST API please see the documentation at api.crossref.org

-Shayn

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Thank you so much！You are such a nice person！ :smiling_face_with_three_hearts:I’ll look into it and ask you for help if I have a problem. :hand_with_index_finger_and_thumb_crossed: :hand_with_index_finger_and_thumb_crossed: :hand_with_index_finger_and_thumb_crossed:

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Dear Shayn,
Dear Chen,
I have a follow up question on the issue of retractions. The Crossref blog article “News: Crossref and Retraction Watch” ( https://doi.org/10.13003/c23rw1d9 ) shows metadata on retractions such as “retraction-date”, “retraction-nature”, “source” of retraction notice and “reason”.

I cannot find those information in the json metadata I retrieve from Rest API. Even for the example provided in the blog article https://api.crossref.org/works/10.2147/cmar.s358886 I cannot reproduce the information.

How can the detailed information on retractions be retrieved?
Thank you very much in advance!
Eva

1 Like
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Conduct a thorough literature review to identify existing studies or datasets related to retractions marked by Crossmark. This can give you insights into previous research methodologies and sources.

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@Eta If I understand correctly, you were hoping to get retraction updates by querying the publication directly? I was looking into this as well… were you able to find a way? Thanks! Stephane

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Hey Stephane/ @sga,
I am not sure what exactly you mean by “updates of retractions”. I retrieved the retractions using the following query and compared the result with some DOI list. Applying an inner join I got those DOI in our database which had been rectracted.

curl https://api.crossref.org/works?filter=update-type:retraction&mailto=your@email.de&cursor={next_cursor}  --output tmp.json

In python code I made a loop and replaced the [next_cursor] each loop to retrieve the next page.

    for _ in range(1000):
        if number_items <= number_retractions:

            result = subprocess.run(f"curl https://api.crossref.org/works?filter=update-type:retraction&mailto=your@email.de&cursor={next_cursor}  --output tmp.json ".split())
            logging.info(result)
            with jsonlines.open('./tmp.json') as reader:
                for obj in reader:
                    # next cursor is needed to reach the next 20 items
                    next_cursor = obj['message']['next-cursor']

Perhaps this helps. Cheers, Eva/ Eta

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Thanks Eva/@Eta! I thought you had found a way to obtain the retraction info (for example, a retraction field that had a date and some info when a publication had been retracted) directly from the works DOI (it would make sense, to me and with the little knowledge I have about how all this works, to be able to query that info directly from the DOI). What you do with the join achieves just that, so I now understand!

And now that I have looked into this further, and thanks to your query, I also see that we can actually obtain part of this info from the DOI directly (as I had hoped) by looking at the update-type field. I did not know how to find this, but it seems to be stored in update-to[0].updated.type. So your answer helps me in two ways :slight_smile:

Unfortunately, the retraction vs publication date still needs a bit of linking. To clarify, I will look at the first example in the current list of retractions obtained with your query (http://api.crossref.org/works/10.1186/1752-2897-7-8). Unfortunately, there isn’t a link to the actual retraction. In this case, the retraction has another DOI (http://api.crossref.org/works/10.1186/s13032-016-0032-y), and in that json we have the link info: updated-to[0].updated.DOI=“10.1186/1752-2897-7-8” (the original article), with the date and type (retraction) in sibling json fields. So I am guessing that, with your query, we obtain two references to the same retraction: the first is within the original article, and the second is within the publication of the retraction. So it is not yet all in a single place, but I am getting closer…

Thanks again, Stephane.