The similarity score between two molecules is defined as the sum of Shannon entropy of ionic formulas shared by the molecules:
代謝物間の類似度スコアは、それらのスペクトルで共有される(アノテートされた)イオン式のシャノン情報量の総和です。
The matrix is viewed columnwise. The topmost precursor ion in bold face produces the product ions beneath it.
Each formula in matrix cells corresponds to the neutral loss. Blackout cells indicate products that cannot be derived, and orange cells indicate a structurally plausible link produced by cleaving a single chemical bond (in cases of ring-opening, two bonds).