Tag activity on BL Flickr Commons

Tag information for BL Flickr Commons, from 11 Dec 2013 - 11 Dec 2014. Tab-separated, UTF-8 encoded file, each row corresponds to a tag change. A change is simply a tag being added or removed. The image's metadata is harvested regularly so that we can spot when a tag has been added or has been removed. It is not clear if it is possible to work out when a tag has been precisely added from Flickr's API or hidden information within the tag's identifier. The TSV has the following columns: flickrid - The id of the image. enteredtext - The text typed in by a contributor. from - the epoch time (in seconds) since the last data harvest before the 'to' harvest. to - the epoch time of the metadata harvest that the change was detected in tagid - The tag identifier supplied by Flickr author - The user's account who added the tag tag - The simplified version of the text, used in flickr's URLs and so on. mode - either 'add' or 'del', showing that a tag has either been added since last harvest, or that it has been removed since then.