Table 2.

Fusion features

Representation	Feature name	Meaning
${\mathbf{F}}_1$	Type$(e_1)$ $\oplus$ Type$(e_2)$	Union of entity types
${\mathbf{F}}_{\mathbf{2}}$	$L_{\mathrm{POS}}(e_1)$ $\oplus$ $L_{\mathrm{POS}}(e_2)$	Union of left POS for entity pair
${\mathbf{F}}_{\mathbf{3}}$	$R_{\mathrm{POS}}(e_1)$ $\oplus$ $R_{\mathrm{POS}}(e_2)$	Union of right POS for entity pair
${\mathbf{F}}_{\mathbf{4}}$	$L_{\mathrm{POS}}(e_1)$ $\oplus$ $R_{\mathrm{POS}}(e_1)$	Union of left and right POS of $e_1$
${\mathbf{F}}_{\mathbf{5}}$	$L_{\mathrm{POS}}(e_2)$ $\oplus$ $R_{\mathrm{POS}}(e_2)$	Union of left and right POS of $e_2$
${\mathbf{F}}_{\mathbf{6}}$	$E_{\mathrm{Structure}}$	Entity pair structure
${\mathbf{F}}_{\mathbf{7}}$	Sentence &Marker	Sentence with entity markers

This table illustrates the fusion features used in our research, with each feature representing an aspect of the entity pair’s information or structure