Maximum Parsimony
(MP). Maximum parsimony is an optimization criterion that
adheres to the principle that the best explanation of the
data is the simplest, which in turn is the one requiring the
fewest ad hoc assumptions. In practical terms, the MP tree
is the shortest - the one with the fewest changes -
which,
by definition, is also the
one with the fewest parallel
changes. There are
several variants of MP
that differ with regard
to the permitted
directionality of
character state
change.
by definition, is also the
one with the fewest parallel
changes. There are
several variants of MP
that differ with regard
to the permitted
directionality of
character state
change.
最大節約方法是一種優化標準，對資料最好的解釋也是最簡單的，而最簡單的所需要的特別假定也最少。在實際應用中，MP 進化樹是最短的；也是變化最少的進化樹，根據定義，這個進化樹的平行變化最少，或者說是同形性最低。MP
中有一些變數與特徵符狀態改變的可行方向不盡相符。
Maximum Parsimony
(MP)
35