gentoo-overlay/app-text/bact/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<!-- maintainer-needed -->
	<longdescription lang="en">
		BACT is an implementation of [Kudo &amp; Matsumoto 2004], and is
		designed to handle the tree classification problem. The important
		characteristic is that the input example x is represented not as a
		numerical feature vector (bag-of-words) but a labeled ordered tree.
	</longdescription>
</pkgmetadata>