Table 1 Input features and their corresponding descriptions

\({\sigma }_{r}\)

RE Ionic radius deviation of constituent RE₂Si₂O₇

\(\bar{r}\)

Average RE Ionic radius of constituent RE₂Si₂O₇ per formula unit

\({\sigma }_{m}\)

Mass deviation of constituent RE₂Si₂O₇

\(\bar{m}\)

Average mass of constituent RE₂Si₂O₇ per formula unit

\({\sigma }_{X}\)

Electronegativity deviation of constituent RE₂Si₂O₇

\(\bar{X}\)

Average electronegativity of constituent RE₂Si₂O₇ per formula unit

\(\triangle S\)

Mixing entropy