,
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o không t ng t
Mode c a m t t p d li u
,
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Hàng xóm (neighbours)
sim(x,y)
sim(x,y)
sim(x,y)
sim(x,y)
Links
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hàng xóm
Hàm i u ki n
(criterion fuction)
l
- f(
)
o s g n gi gia hai c m
(goodness)
Tro
ng ó:
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-
Simpo PDF Merge and Split Unregistered Version -
quan h không phân
bi t, x p x trên, x p x d i
thô
Quan h không phân bi t
Indiscernibility Relation
L p t ng ng ca B Equivalence
Class
X p x d i (Lower Approximation
X p x trên (Upper Approximation
Mi n bao (boundary region)
thô (Roughness)
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thô
nh nh t trên t t c các thu c
tính (Min MinRoughness - MMR)
Mean Roughness
thô nh nh t trên m i thu c tính
(Min Roughness - MR)
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Simpo PDF Merge and Split Unregistered Version -
Th nghi m
V i t p d li u soybean:
V i t p d li u Zoo
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soybean Zoo
V i t p d li u soybean-large:
V i t p d li u mushroom:
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Trong ó, n là s i t ng, k là s c m, m là s thu c tính, l là s giá tr phân bi t l n nht trên các thu c tính;
m
m,
m
a
= s neighbours l n nht và s neighbours trung bình c a m t i t ng.
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Simpo PDF Merge and Split Unregistered Version -
Simpo PDF Merge and Split Unregistered Version -
Simpo PDF Merge and Split Unregistered Version -