172
T.-S. Chon . Y.S. Park' I.-S. Kwak . E.Y. Cha
Fig. 8.25 shows the grouping of "changes in exergy" by the Kohonen network
for different sampie sites during the survey period. Since the number of sampies
was decreased as period of sampling time (e.g., 3 months, 4 months), the number
of neurons in the Kohonen network was accordingly decreased as the period of
training time was increased. In 3-month segments (8 x 8 neurons), some
groupings occurred between "different sampling times" of the same sampie sites
or between "different sampie sites" in similar sampling times (Fig. 8.25a).
However, the mapping did not show any dear tendency. In 4-month segments (7 x
7 neurons), in contrast, groupings appeared in a dear pattern in the two basic types
(Fig.8.25b). Different sampie sites were grouped according to the similar periods,
or sampies from different periods at the same sampie site were patterned dosely.
a)
•
1
>
,
•
,
•
7
9804TKC 9803TKC
9801TSD 9801ITB
9803TSD 980HYB
9804T8D 9804TYB
• 9809VCK
9801TYZ
9803TYZ
9804TYl
9801TKC
9809YPU
9805TI1P
9802TYC
9803TSP
1
, 9801TKC 9803TKC
9801T5P 980HYB
9804TSP
9805YCK 9806YCK
980!iYPU 9806VPU 980lTIIr
9805TYZ
9806TSP
9809TYZ
,
9807YCK 9808YCK
9803TIlr
9808TYC 9807TYZ 9805TYC
9803TKC 9809TYB 9808TIfP 9807TYC
•
9808TYZ 9802YPU
9809ITC
\l803YPU 9804YPU
,
9806TYC
9803YCK 9804YCK
98a21HP
9309YSC
980811'8 9&D1YPU
9801TIlP 980HYC
•
9803YSC 9804YSC
9808YSC
7
9807YSC
9804THP
9807TYS
9802YCK 9802YSC
9801 TSD 980518D 9809T8D 9801YCK 980ITYB 9801TYC 9806TKC 9802TSP 9801YPU
980STYS
8
9805YSC 9806YSC
9808TSO 9809TSP 9801 VSC
9801TYZ 9808YPU 980HSP
b)
•
1
2
,
•
,
•
9809YPU
9808YSC
9809TYS
9803TYS 9804TYS
9807TYB 9801TYC 9806TSP
•
91105TYS 91106TYS
9807TYZ
9807TYS 9808TYS
1
9807THP
9809THP
9803YPU 9804YPU 91106YPU 9807YPU
9110STYC
2
980SYPU
9808YPU
,
9808THP
980STHP
980STYB 9805TYZ
9804TYC
•
•
9803THP
9801TKC 9801TSP
9805TKC 9806TKC
•
9809TYB 9809TYC
9804TYB 9S04TYZ
9803TSP
9S03TKC 9804TKC
9809TYZ
7
9S09TSP
9S09TKC 9809TSD 980S15D
9S03TYB 980nvc 9804TSP
9803TSD 98041SD 9807VSC
8
9803TYZ
9S05TSD 9806T5D
Fig. 8.25. Mapping of the benthic communities collected at the study sites in the
Suyong River trained by the Kohonen network after training with exergy changes
in four months. (The three-character alpha-codes strand for the name of the
sampie sites, and the four numerical digit appearing before the alpha-codes
represent the month and year of collection. (Le. April 1998 for 9804». (From Park
et al. 2001b).
T.-S. Chon . Y.S. Park' I.-S. Kwak . E.Y. Cha
Fig. 8.25 shows the grouping of "changes in exergy" by the Kohonen network
for different sampie sites during the survey period. Since the number of sampies
was decreased as period of sampling time (e.g., 3 months, 4 months), the number
of neurons in the Kohonen network was accordingly decreased as the period of
training time was increased. In 3-month segments (8 x 8 neurons), some
groupings occurred between "different sampling times" of the same sampie sites
or between "different sampie sites" in similar sampling times (Fig. 8.25a).
However, the mapping did not show any dear tendency. In 4-month segments (7 x
7 neurons), in contrast, groupings appeared in a dear pattern in the two basic types
(Fig.8.25b). Different sampie sites were grouped according to the similar periods,
or sampies from different periods at the same sampie site were patterned dosely.
a)
•
1
>
,
•
,
•
7
9804TKC 9803TKC
9801TSD 9801ITB
9803TSD 980HYB
9804T8D 9804TYB
• 9809VCK
9801TYZ
9803TYZ
9804TYl
9801TKC
9809YPU
9805TI1P
9802TYC
9803TSP
1
, 9801TKC 9803TKC
9801T5P 980HYB
9804TSP
9805YCK 9806YCK
980!iYPU 9806VPU 980lTIIr
9805TYZ
9806TSP
9809TYZ
,
9807YCK 9808YCK
9803TIlr
9808TYC 9807TYZ 9805TYC
9803TKC 9809TYB 9808TIfP 9807TYC
•
9808TYZ 9802YPU
9809ITC
\l803YPU 9804YPU
,
9806TYC
9803YCK 9804YCK
98a21HP
9309YSC
980811'8 9&D1YPU
9801TIlP 980HYC
•
9803YSC 9804YSC
9808YSC
7
9807YSC
9804THP
9807TYS
9802YCK 9802YSC
9801 TSD 980518D 9809T8D 9801YCK 980ITYB 9801TYC 9806TKC 9802TSP 9801YPU
980STYS
8
9805YSC 9806YSC
9808TSO 9809TSP 9801 VSC
9801TYZ 9808YPU 980HSP
b)
•
1
2
,
•
,
•
9809YPU
9808YSC
9809TYS
9803TYS 9804TYS
9807TYB 9801TYC 9806TSP
•
91105TYS 91106TYS
9807TYZ
9807TYS 9808TYS
1
9807THP
9809THP
9803YPU 9804YPU 91106YPU 9807YPU
9110STYC
2
980SYPU
9808YPU
,
9808THP
980STHP
980STYB 9805TYZ
9804TYC
•
•
9803THP
9801TKC 9801TSP
9805TKC 9806TKC
•
9809TYB 9809TYC
9804TYB 9S04TYZ
9803TSP
9S03TKC 9804TKC
9809TYZ
7
9S09TSP
9S09TKC 9809TSD 980S15D
9S03TYB 980nvc 9804TSP
9803TSD 98041SD 9807VSC
8
9803TYZ
9S05TSD 9806T5D
Fig. 8.25. Mapping of the benthic communities collected at the study sites in the
Suyong River trained by the Kohonen network after training with exergy changes
in four months. (The three-character alpha-codes strand for the name of the
sampie sites, and the four numerical digit appearing before the alpha-codes
represent the month and year of collection. (Le. April 1998 for 9804». (From Park
et al. 2001b).