Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:Under mild regularity conditions on the densities (see Hyvärinen, 2005; Sriperumbudur et al., 2017, and below), the score can be rewritten
J(p0||pT ) =E [ d∑
i=1 ∂2i Tx(y) +
1 2(∂iTx(y))
2 ]
+E [ d∑
i=1 ∂iTx(y)∂i log q0(y)
] + J(p0||q0)
where J(p0||q0) is a constant term for the optimization…
Category: