Expression of Concern: Research on performance variations of classifiers with the influence of pre-processing methods for Chinese short text classification

After this article [1] was published, concerns were raised that the article uses terminology that differs from standards in the field (e.g. “informational index” instead of “dataset”).

In addition, the PLOS One Editors have concerns about the article’s compliance with the PLOS Authorship policy.

In light of the cumulative issues, the PLOS One Editors issue this Expression of Concern. Readers are advised to interpret the article [1] with caution.