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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
) W9 Z5 T6 `: Y' \6 D1 w5 D& i: rto do-business ' C& U7 @7 v9 Y- h6 i8 M1 [' O# u3 \
rt random 360) Z4 ?( r: x9 Y+ I- l
fd 1
  d- h0 y$ W) X8 x ifelse(other turtles-here != nobody)[: V6 i0 m( `' l7 A/ M1 |9 `
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
, J/ m" u2 i/ R9 X. y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) W( k. t; ?0 l/ I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 }5 w2 h( o: N! I" l8 o% X
   set [trade-record-one-len] of self length [trade-record-one] of self  u' [5 M  v4 `
   set trade-record-current( list (timer) (random money-upper-limit))" p8 Y* g$ }: d
& U; J" l! x, s/ `8 C" G7 [3 X5 M
问题的提示如下:
: Z0 B: ]; j: j! b
; d" \2 `2 H& ^% x# e7 s9 r8 v: X/ Aerror while turtle 50 running OF in procedure DO-BUSINESS  L9 y+ D1 J3 P$ ~* W; A
  called by procedure GO
$ n' R7 v1 V2 [$ TOF expected input to be a turtle agentset or turtle but got NOBODY instead.% {* w  K1 A8 ^, y6 i6 t
(halted running of go)
' O4 o0 Y" D0 V5 m3 t/ |4 g
0 O! C7 }* W1 q6 ]6 G这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~  T1 o4 S. l4 n6 N
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教, a6 j0 z( p% x# o6 }4 I
globals[
1 g7 k0 G. d# W0 o) t7 Txmax
. N* i" ]0 W) l/ fymax
3 q$ I6 }5 I) ^7 X9 P# d( D! lglobal-reputation-list
. D* v: k3 M" W  O  t# V2 U6 ?  W& J0 t% o# m
;;
每一个turtle的全局声誉都存在此LIST+ {! K& n+ A3 \$ v& S' p1 n
credibility-list9 ~; J7 `$ @" H# _+ U7 g! H
;;
每一个turtle的评价可信度
6 F) v  h' Y) T$ {& z& Chonest-service9 E# E8 J& d. t* B. W, G% [
unhonest-service2 }: |( z2 C+ B$ W
oscillation. ^) i: _! g% h! q
rand-dynamic3 t8 J, C* E: e3 [3 B2 w9 f) A4 O0 w
]
: {/ t$ O" W4 r# g" N) a& d' t- g2 }& d* S
turtles-own[2 Y/ f1 y, m6 ~' _' N  P
trade-record-all6 j6 O* M: ]! z- Z
;;a list of lists,
trade-record-one组成3 J2 I  {1 u  G4 J" ^1 p+ f
trade-record-one
: P' d7 ~" Z1 e;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% B- q' n) P" |4 U6 K2 D
3 }. _+ P. b8 z0 X1 w' Q
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
* L% G; o. X$ B6 ?trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
! Z1 y: a! w% d8 d7 }credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list" R* ?9 H+ n3 b6 v" B7 S3 M
neighbor-total
/ l& u! z2 q- s0 L, ?! T;;
记录该turtle的邻居节点的数目8 u$ r# L" \1 R/ z. S8 \" ]' s8 k
trade-time, ]" w, N$ H$ v- }2 L( J
;;
当前发生交易的turtle的交易时间
8 d+ ~4 Q6 g# c  B1 \appraise-give# g; Y4 R4 D5 t2 r: N3 Y! V0 I" Y
;;
当前发生交易时给出的评价
( X$ r! m4 c: k  {7 Nappraise-receive. {2 h; i4 |( l* ^1 h8 t' |
;;
当前发生交易时收到的评价* @+ }3 ~$ g2 z! e  i
appraise-time
1 b. H. U, z5 [% |) K% R. O* h! V;;
当前发生交易时的评价时间" ?4 u* n, h) m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! }! o; O7 M6 \% j' n" e/ d. d
trade-times-total
/ p" K3 \8 G0 u- h;;
与当前turtle的交易总次数
+ o9 C7 n* o$ y- d* _, `5 Ttrade-money-total8 g( o1 J2 d  F
;;
与当前turtle的交易总金额! o5 V  ]' g% h5 l$ z
local-reputation1 |( U' h$ L: T7 I
global-reputation
. Q9 ^; b5 O3 n+ E* gcredibility" W: C! {6 E+ @9 y
;;
评价可信度,每次交易后都需要更新
9 a  y; y1 j1 @* P; mcredibility-all+ _. f7 T3 [8 S. B, q' c  ?
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据  h2 B/ ^: ]; d( H5 ]2 S  P

( ?& C* q9 A( A! d;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.57 K, Y8 x9 C6 Q/ q5 I% X3 T
credibility-one# e$ K) _2 u: Z. d8 F" |$ n0 t
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
: a5 U  {9 H" r* ^5 Fglobal-proportion
4 F4 F- J: |: W+ _customer1 X2 i! R" L1 t
customer-no5 w, h8 c- s1 M' n0 T! K" Q+ m
trust-ok
5 f- H  |, t7 v4 qtrade-record-one-len;;trade-record-one的长度
' m* x  h7 `6 I5 n. s]
- ~5 a/ S& g' l9 j" `, X( S
: R. k' W: p$ D9 o& ];;setup procedure# q& b$ l+ [) X4 x9 P' k

4 L9 L& e/ S# Dto setup
: E9 b0 S, E- G+ c2 G" K
- C0 O7 B3 a1 s; Vca

) f6 W, f1 i% \& P# W/ f' C  y, ~& k0 h$ k7 e0 H$ @
initialize-settings
2 T7 U9 [; O! S& o. f
. B! t% _7 _4 C, x4 M1 l
crt people [setup-turtles]
; u# Q$ ?1 K! S! a
2 u7 E( h& N5 Q  c/ S/ H0 d
reset-timer
1 x" i5 q, {+ D. Y& o8 p/ ~5 }
' l7 O- b( z1 ?! H4 u1 N" ~5 }
poll-class

' ~% |+ `0 E' Q: I; w( w0 U+ m& h
setup-plots

7 w/ }7 |( N4 ]9 L, `3 ~( z: P* F4 ~7 ^
do-plots

6 H( m3 G" G/ B$ fend
/ I/ C% J' _. z* p) r* `2 u0 v$ W# V" c
to initialize-settings) z' C; G+ u3 d6 x8 A
0 y8 T) g5 Q1 V2 o/ e& X6 \) L4 E
set global-reputation-list []

% W  Y1 p* v) ]; `2 y1 c1 N* e# P* x; \& ?
set credibility-list n-values people [0.5]

! b/ q7 h; j0 a7 x+ S$ E5 E4 z( E# }+ w
set honest-service 0
) f7 g& [- y9 d; l8 A+ G

* g5 e) A, H4 t6 Z* I, gset unhonest-service 0

# G* p- \3 f' J) ]  H
# c/ Q) \# N& C2 a/ ]set oscillation 0
/ B  x* h( v8 f/ r6 v" L

9 x4 U$ ^7 C; }& ^2 L, _; i6 Zset rand-dynamic 0

, d+ N" P3 Q) B1 {end
1 a3 s/ |( j$ Y; N' f* J( T
: c" C% R! C" j- q# x9 [to setup-turtles
- S2 G( V4 T. p7 H. Q2 a5 |) Zset shape "person"
5 l% z( \! {% d* Z7 ~setxy random-xcor random-ycor3 y4 S- a- V, A, J/ h; T
set trade-record-one []5 b5 Z, l  `/ N4 \( H3 n: J8 @
: \0 K# I0 H& K  _2 V$ R' y
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 b/ t$ ~9 A: ?# H9 T5 {

9 ?6 V: v; _8 J' h  Cset trade-record-current []1 T' p# a" N8 l( u' {
set credibility-receive []! N# k# f; \, ]/ V
set local-reputation 0.59 E- U& b8 P, S7 Q9 ~8 _& q
set neighbor-total 0
/ k$ m% i/ o4 G% \7 g) J! `9 ~set trade-times-total 0
4 Z/ B& c$ u$ V! b0 H$ o$ Uset trade-money-total 0
$ K% v' N6 s; ]0 U1 ]3 r: sset customer nobody9 S5 B) g( o; J  @
set credibility-all n-values people [creat-credibility]
, w& i1 k7 H: N; nset credibility n-values people [-1]1 `7 ^/ p0 X* r; Q+ D
get-color* z* r% [1 B5 ?; T

, e1 ^5 B: l+ I0 ?end
' V/ y# x3 a5 F0 _; W- g( ^2 ^1 `' I$ \# M( V7 T: F$ O
to-report creat-credibility' [) o" C4 R) ~
report n-values people [0.5]4 h$ d# I. U( q( v# I, ~
end
( F5 ~* {; D$ Z% o5 w% g6 P; Y9 s6 v9 K5 n7 [% L4 P
to setup-plots
+ G" e) @* I& A  S+ W3 s% U$ W% ]* q  ~7 X5 ^
set xmax 30

9 c" N+ j+ L: s% G" z% ~/ D% J! Z& H& ~& A/ p  }
set ymax 1.0

) }/ T/ s8 l* S% `: l: M# N) V# k5 H. l
clear-all-plots
: }$ C8 d: s3 f# h9 x

( C0 q4 u9 B' d, U& {( t, xsetup-plot1
0 y4 g9 f2 w2 \

% F. S7 Q8 M2 Vsetup-plot2

  x' s. J2 L# C) \) N8 u
$ H$ r6 W. ?9 Q0 L9 f3 v; ]setup-plot3

! X$ @& B+ K- D* S$ O& Aend
4 g: C% l9 @# F! ]& p
5 g  G( z; j: z. O2 g; Z;;run time procedures
! T. m" Z/ N! r, i" l: q" C2 w& u' ?& k! O- n
to go4 ~) H  T" |. Q  a( _
! O8 I( K: M% z
ask turtles [do-business]

/ }0 ~3 a0 F6 `# iend
/ H+ s3 r) J( Y7 @! p( K2 Y9 c6 j& L1 g* I" H
to do-business
) Y+ y$ v3 P7 E

  k& w% _  h4 A/ J( X5 z: K! H3 i. m1 W  O% P
rt random 360
+ z& W5 d, }6 ?& Q/ S4 Y3 [
5 j8 C; G  J% i/ B
fd 1

' Y* E+ E: B$ n% T
1 s* i' g# b" e7 P# Mifelse(other turtles-here != nobody)[
' z3 y0 Q5 d3 C8 }1 f3 M

  J$ @0 Q- c! r* m) t& P( \9 O: H6 Fset customer one-of other turtles-here

- a/ \. O5 I6 `& p# a! N. w9 w, d, ^/ O! Y/ E6 v
;; set [customer] of customer myself

5 `5 M8 }0 o1 e+ H4 u' P8 l) ?3 o& z: U
set [trade-record-one] of self item (([who] of customer) - 1)
* t+ P5 t4 z5 c[trade-record-all]of self
! T, f5 d9 g9 z8 @$ @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& S6 I( M  ~# W  u+ U* |# O
2 E. T$ G) ^1 F
set [trade-record-one] of customer item (([who] of self) - 1)
! p& w# m  d5 j7 l) k& X% T[trade-record-all]of customer
+ w2 T" q. o: A. o
* B! ?% @) f3 r; p# q
set [trade-record-one-len] of self length [trade-record-one] of self
% U1 L5 P& h  \. p9 k7 O+ U
+ S. e6 L% J; t( u  N( P! K
set trade-record-current( list (timer) (random money-upper-limit))
. }0 E' V) ?7 o! W; d. E  Y

/ |2 L2 e& c: w( gask self [do-trust]! p2 q! C" ^2 k9 e$ D  v: g2 ~
;;
先求ij的信任度3 C5 [+ D! G+ }$ Q0 g5 d3 t

9 |+ F) y# P1 v# ~if ([trust-ok] of self)5 d; w. A3 A% m8 s
;;
根据ij的信任度来决定是否与j进行交易[
- b6 V  Z" p( o9 K2 Pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 w6 l1 `2 I$ B; {# x+ ]7 n4 G
, w+ }& m. Y( N! ?( U: w
[

6 e6 z% l* i- h" _5 S
& {1 e6 s* e- sdo-trade

9 g* K) T* i9 k$ W/ s' z2 Y* N8 s& M  X; [$ L6 j
update-credibility-ijl
/ M. g8 e: p3 f/ U) b+ ~8 e8 m
# V$ U5 v6 U6 T: V" {  r8 E$ ]* C$ S
update-credibility-list4 O5 |* e1 n& e8 e& t# k& W- `

  I5 Y# J3 a# s* o7 j, |. e
" Y5 H% _( j0 O/ U8 Wupdate-global-reputation-list
/ ?" [  V7 z) B5 ^7 [( F! Z+ ]
( H3 ^2 G1 ^& D; _- I
poll-class
' T+ J6 v' g& f6 D0 E7 e
$ h# o# w9 m2 U3 G+ G
get-color
1 R. `. A; F5 \. t
8 Y$ X! \& ]$ X7 G0 X3 h+ [% j
]]
; h/ Q3 W( Y0 |9 U" p/ ^; p% T7 O# z( ?! D/ g( ~
;;
如果所得的信任度满足条件,则进行交易
& d3 H! O: n. A* R2 e; P% M9 r4 B
) X, w. y6 O: l[

; ]% z! d4 w& O8 b
6 u( M6 d% \, W/ Vrt random 360
" t" T+ C# M  D  B
. V( M9 I7 h& @( S
fd 1

+ X) q7 n. z; s$ S$ S  X
3 {% \" c5 C) g8 d7 }* a3 r]
( z) L' X9 \0 C( A) C: g7 c, o

0 C/ F0 W% O3 y$ R5 D6 z( Y$ Fend

7 W) b7 \, N0 c7 L% M$ {3 @8 o0 f, ^+ F6 c5 ^
to do-trust
7 [2 @5 d5 e! P( E3 |5 @set trust-ok False4 e$ o# v* d/ Q1 O: c. b
* `3 T& P- A# w) ~0 ~
; C  C5 U# S2 B4 a
let max-trade-times 0! [0 G5 L8 C' `: ^& U- o0 ^0 k
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* _2 T, L. D6 Rlet max-trade-money 0. ?5 i1 [' X3 z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: U  W, e" Y% V, G4 I# D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( X$ }! x. F8 R6 y) l6 v

9 E# }  D4 ]& C! N. t# c
. {& c( U. X  x2 p) ^" q0 H
get-global-proportion5 \* g7 q7 S  _5 y& Q2 t
let trust-value, r# M: w! B$ E- q
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
7 N1 U, a$ {: E+ Z/ A4 G& Z& K
if(trust-value > trade-trust-value)/ A! Y8 [; j4 ], h2 t
[set trust-ok true]
5 B8 U7 x, ?5 }% l& E! {end
: [1 x9 s6 s- n$ b% m2 d, y% g0 Z( F0 u' T
to get-global-proportion9 V& R1 u1 m8 l# H0 t. c) n/ M8 ^
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ H( q, T9 F. ]4 ^1 d; H
[set global-proportion 0]- r9 e0 R) E6 R  K4 s+ l* l" K2 B
[let i 0! B8 a* e: J! e1 k; D# b3 u
let sum-money 0, [. `' p# D* ^7 G
while[ i < people]& X) N) f" p8 g2 r
[: E, J8 z/ c4 I$ t& S2 R
if( length (item i- P) g! X! g2 q1 u0 p; Y
[trade-record-all] of customer) > 3 )

0 C  C5 {# d# m+ ]! i$ r[8 v  K' h! g5 z" Y" w, g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ B1 o7 l5 M' U/ O8 ~6 n
]
1 B8 U& }6 p1 Y  @( W]
6 p" Y& m# ?$ o1 M7 H0 @3 c; Rlet j 0% X6 s# X7 ]& D% W4 E. S7 e: N! f6 F
let note 08 v& _0 `1 E/ Q/ q
while[ j < people]0 J& I6 `7 |+ q' A' f
[
1 a1 u% v0 U. xif( length (item i" B1 R  u9 o) P9 e/ U7 b
[trade-record-all] of customer) > 3 )

2 h5 ?7 V, N  q7 f[
  p' N9 Y0 J& m& D* e+ p3 Gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ v2 t" {/ O- W) G  B
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 \3 d0 M5 g2 ~8 ]' m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 P8 ~9 p$ y, F, l  t]& C: z4 s0 p: Y) y- e7 R
]. _2 b' @/ u  b- w
set global-proportion note: n  x( c6 Q, H0 _
]3 u5 S% y+ M% i: [2 C9 G  _, d% g# s
end
* A. l+ y& z6 u# m
- W! O2 h7 {- Y; ^$ p, n$ wto do-trade
" q) E' a- h# G+ I1 q3 j' `1 v;;
这个过程实际上是给双方作出评价的过程4 x, [- Y; g2 X' P2 _5 K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 W. ?/ w, _5 a4 Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 X6 n' L$ z5 f* l7 ^) k6 q5 G2 X
set trade-record-current lput(timer) trade-record-current) D# h9 f% @5 H4 I
;;
评价时间
. Q" T" L9 s9 S1 L+ C+ kask myself [
7 {2 Y/ l# k* M0 Z1 q0 J1 b6 [update-local-reputation, _) Z, c# j1 w5 ~5 f
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 w3 o4 Q1 `6 ?3 b0 E]: W( q$ n6 h6 C- v) y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) s/ n+ A; R8 V. k8 m1 _
;;
将此次交易的记录加入到trade-record-one
5 [0 y6 ]" k3 L0 P1 iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: @4 q/ ]. l# N, P  r4 i2 Alet note (item 2 trade-record-current )2 r) N$ U/ a1 p) L; j( U) T
set trade-record-current; ?# C0 i( h* n5 K
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 {/ H8 ]' L  K$ ?  E0 r7 }3 r) ~
set trade-record-current, ^9 ^6 c- F# q; N
(replace-item 3 trade-record-current note)9 S! B" [+ p. ~4 C  Q) `
. L7 V! Z3 C/ g4 \8 Q* p
' [) f8 g5 z5 {4 w
ask customer [
. H' X  m$ A' p8 cupdate-local-reputation/ E9 f! p% y/ F$ \% R% m
set trade-record-current) M, M4 Y# j3 j/ p) ?( o$ J0 l$ W/ i1 }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 u( T+ q, x, l
]
3 y, I: [6 ^! M* d/ C4 O3 M: x' q8 ?5 D8 Y9 {
  T6 b  O% ~; H" w( k. Q9 G
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 y, _# Q9 k0 L" u; m" F  j
5 r: {+ b  [' o/ T# I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% n! F6 W: m: \4 L
;;
将此次交易的记录加入到customertrade-record-all
& `! p5 z5 q0 G+ w2 z2 p! m& Q. ?end
- Y6 q' D7 }) O+ m$ W1 c" E2 Q6 L/ \% Z6 L3 ~
to update-local-reputation( k3 E% L4 k. u# g. d& c
set [trade-record-one-len] of myself length [trade-record-one] of myself; M7 O  w  w. \, S" r
7 b/ T/ v4 }9 i* @

, y  q0 C( w9 b2 u3 J* h;;if [trade-record-one-len] of myself > 3
3 v" n6 w% t1 V% m) O* K! O6 }
update-neighbor-total
' m# E  V! A, b1 @) a& m  @;;
更新邻居节点的数目,在此进行3 M9 }5 A9 L" z3 g( `. g
let i 3
5 R3 T) Y* V: B4 [5 P8 e2 Slet sum-time 0% X$ P" M) f" e( ]# y! d1 {2 h8 {
while[i < [trade-record-one-len] of myself]
! M9 b; \0 H. z3 [# |7 x[
1 a3 U0 N! _  e- g) L1 j' uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( i4 t& x; ?  [% }' b5 s
set i5 d+ |3 U% ^, Y, \7 ~
( i + 1)
- C' P$ E, j: d/ [* g
]
* Y' {! `4 Q4 K3 ^+ H3 |5 Klet j 3
, L/ u8 ]. }& K) c' `- X: ]let sum-money 0
! R- s: Z( s& o. W3 k! X6 pwhile[j < [trade-record-one-len] of myself]
5 K3 k; s9 u4 t7 @[5 V# P! P: u0 H) h* L8 W  A9 n7 E
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): a8 i: l6 A, _! }! z& ]  e
set j
: x8 J  ]. \8 O* K2 l6 i8 a. L9 E( j + 1)
- Z& l# z. n" a1 z% Y3 ?
]# ]1 F4 i+ ]: c3 T
let k 3$ A6 x: p# p/ Z/ n, Y/ y- v
let power 0
2 I- B( [4 I, v; F2 E" C( x" Llet local 00 i. S' X1 {% R% {& l; ]/ J
while [k <[trade-record-one-len] of myself]
6 c0 y/ e. C- p9 m, g[+ g( f" ~( x4 A  I
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) $ B2 w( Y- P( G8 v2 x( _
set k (k + 1)  S/ K7 m% g7 q$ g
]$ y/ S" `/ X7 c; R) Y4 S. e
set [local-reputation] of myself (local)* C# Z: Y% z9 d$ w+ \' w
end
8 _  E& |3 L7 o' `/ w2 ?8 U. W) w/ ~, \
to update-neighbor-total
# _2 L% ?. r* C3 b3 q( }3 r6 d) p9 P4 Q9 K( i$ k5 A
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) B- i3 f$ ?7 i1 F; {: J: M8 n- D6 @

0 P$ q5 i7 n6 W3 q1 R
4 P9 f6 _; B: I; z% t6 j4 v
end7 }0 s$ c0 n9 n# x" G

% Y- \; s1 J7 R& f$ L- Eto update-credibility-ijl 5 q5 i% s5 o, }. B% C# P9 [. Z

7 g( [4 E2 N( a;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
. D. R. _5 g$ F. [% Z: z4 K" Elet l 0- J7 j  O( y5 v7 W* T/ I9 q* x% h
while[ l < people ]
9 j  V% Q: n. _4 X;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
) v& @3 y8 j2 G2 y[
! a; w9 q2 `% G' ~. elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* H- Q! a0 Z0 v+ |if (trade-record-one-j-l-len > 3)
6 @. L  l0 `; T8 R2 Q[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
% h& e7 ]7 w! `% g- d# _) h1 ]let i 36 P0 w) Y; z2 g! K
let sum-time 0
' Q- g% I+ @" P1 P2 Qwhile[i < trade-record-one-len]. G* c2 l4 m  ^- C
[; [* {  \2 v1 [' \; r
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' c- f& j; R, n! Z# k
set i' M$ e5 O' L3 s2 ~' X
( i + 1)
9 B  j0 y; i( [+ X# m! G) ~
]  @7 A1 ]3 \, U
let credibility-i-j-l 0
$ P( \. R! R; V, }) y) D+ _;;i
评价(jjl的评价)7 r: M: p& K( t7 A2 I
let j 3
  N5 l* y/ A5 klet k 4
7 P- S4 e0 o% n) L( bwhile[j < trade-record-one-len]6 V1 j0 j# ?/ u& Y
[
+ r1 X+ q" r/ kwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
  F* i" [: g. o, u0 Aset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
7 x% E7 a8 A% v" m: L$ P/ [set j
) ?3 d$ g1 X7 j  |& _' Q: Y& I7 d( [( j + 1)
/ |4 M9 m0 M% H: g1 M
]
# W9 Y4 T4 y; \0 k" Z6 ~! z* }' pset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
8 q9 v, j) t" u% I; G; q/ U/ A- M) |2 ~: m
- v5 v8 v* B+ j: l5 ?) Z( d
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). \* T0 r9 D3 e9 M3 _/ ^" F( W
;;
及时更新il的评价质量的评价
% U5 Z8 @; @, `: Y. l* E+ f  o% lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 J( O/ _7 ?- V6 j* P; dset l (l + 1)& ]# O) ^- e  Q8 {+ n/ i" ^8 R- N; y
]7 j( t! p2 h* [6 B  ?2 ?7 U8 _% j3 Y
end' M6 g/ Z8 j& O- H
  H; Q  G5 k3 X: O; ~) ?
to update-credibility-list
2 j' B/ E8 o. F: C, a! N; mlet i 0% l; {  B/ h# s2 e
while[i < people]. y0 O6 c, \3 v* e8 W; ]  G) p
[2 a/ R& H) i3 e( o' w: d
let j 05 l& @7 g8 p3 y  @* `
let note 0
6 `7 C1 Z5 @! y6 O; Q" p. dlet k 07 y8 Z9 j. h8 a9 G- Q7 h0 w
;;
计作出过评价的邻居节点的数目
' \; `/ D0 F  i: `4 ~3 }) _2 f, ]while[j < people]* ?& P: |9 ]9 i$ y) C
[0 }1 k3 Y( w; ~" ?. G. e
if (item j( [credibility] of turtle (i + 1)) != -1)6 i. e7 Y: [" ?, z  d
;;
判断是否给本turtle的评价质量做出过评价的节点
  k/ g4 M" k. ~4 n& \- Q1 [[set note (note + item j ([credibility]of turtle (i + 1)))
, W2 r/ v2 B; b! ~7 }0 V, u;;*(exp (-(people - 2)))/(people - 2))]
# ^: |* z) k7 L) [) ?; H
set k (k + 1)
& h) G) j" I# f" K# ]5 R]
  M& y$ x5 \# h! Y0 wset j (j + 1)1 K* }4 g4 }6 T; h' x# Z
]& u/ Z7 N- @1 g
set note (note *(exp (- (1 / k)))/ k)
% M  g; s" N& L6 O3 C. j- k% Hset credibility-list (replace-item i credibility-list note)5 q$ X4 \( Q9 ?+ ~) I2 G
set i (i + 1)( j( o9 B) s* X9 j* f2 X
]5 q: d6 N" y! e
end
& P* e7 o& b: ?" n+ B6 @3 m' P! q+ b& O( J0 ]8 ^
to update-global-reputation-list, C4 h5 r; b& ]! J/ O8 r% A/ e, j* ~
let j 0" c% q2 n. m: l$ P
while[j < people]; N6 K) w9 B: [  B/ U$ F
[
; f7 K) f; l5 G8 V, S* _7 K( e( Mlet new 0
+ L2 m" {9 R2 e1 t1 O;;
暂存新的一个全局声誉: v) w( w/ U! T: M
let i 0" B5 H8 ~6 C- h5 Q) f" n# W
let sum-money 0
  I  x- ~& P0 N) I6 Zlet credibility-money 0
, S5 d% i7 X, Jwhile [i < people]$ p( b: T  c9 I
[8 n8 W7 U9 K5 x/ ^/ ^; w
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) O8 H0 C3 A2 \- }* {( {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 y6 Q6 E/ c/ v  E7 ^8 d) t2 S
set i (i + 1)
: i) t; O% p5 `* l]
& Z; R& Z7 d1 d$ j/ ^! jlet k 0: @. n" S# j- s4 O, A2 i8 L5 M
let new1 06 v' W/ L) M; Q& B6 P
while [k < people]- `/ D: a8 i9 R) H+ F
[' B9 x6 ?% r0 g: w& l% u, d! c
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)' y' ^9 k/ }( ^# G# b+ E: G
set k (k + 1)& _' ?. p8 p2 ]' f6 ]
]
: q! \4 x$ h. Z6 z, Uset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* G' r/ ~4 d' @  v+ M: t9 k8 c3 tset global-reputation-list (replace-item j global-reputation-list new)
7 v, s) u( J; }6 [" Bset j (j + 1), }5 c" r! j/ O; L- h6 |
]! X  n3 H, z) W8 W. ^" g. ~" m; G2 \
end. F: q$ k/ ]7 R: M$ n% w

# \( ~7 @* `- y$ @( ]8 o# g/ a7 C& m# x8 S: A# Q2 o) G

7 L! P2 m+ b) F4 h+ j5 ]to get-color& R* F) L' z( K) N( ?8 ]6 N) F
) ?7 o  S1 K( {( }% _) w6 t
set color blue
6 L2 W; {8 I/ j+ S0 A( H+ H2 A/ i
end
2 T& _4 L' I0 n( w; B8 |, n# _8 _2 [1 L8 l$ r
to poll-class
6 T( x  k+ O7 }3 Eend# L" R9 L1 o& W

4 x3 r3 n" M9 w( K" `to setup-plot1
/ e: H; W( U/ i/ M
+ d  B+ x! H# a* s- rset-current-plot "Trends-of-Local-reputation"

9 j! @4 P# X1 r. B, i( X: D5 l! P. ~7 _/ c& |9 A2 J
set-plot-x-range 0 xmax

9 g1 V% g! n" H( M( _
9 d( |& W. ^5 j" F; Tset-plot-y-range 0.0 ymax

9 B8 H  V$ N  [" rend
( Q) x* F# H# f: o. W' v- p5 _  e/ h. \6 A0 y  |
to setup-plot2
& ]# ^: C3 E* S% S& h$ {* O$ ~* r+ a9 F+ r" @7 o1 Q1 y3 W
set-current-plot "Trends-of-global-reputation"

4 G& v3 O+ {& Y' a
/ O0 o6 x: s$ |3 Y7 Y# Nset-plot-x-range 0 xmax
' O+ |) N& E9 }  X/ B& l* X% H$ L
( O6 q% ~0 N, l2 [0 W& q
set-plot-y-range 0.0 ymax

; s% B, I* b3 e6 |+ A/ B3 [end
& [, t3 q7 F6 ^- l% i. b" E% ?* _. ^0 K5 s. s  U* p
to setup-plot3
. ^& s; K0 N! m4 d9 Y1 Z7 {3 v8 l2 ?( e8 p! n* X( s
set-current-plot "Trends-of-credibility"
+ T& N' g  Q  E2 W  p
3 @4 N0 L; K. v( U2 B; B" z
set-plot-x-range 0 xmax
7 z" X5 v: `% ^( L8 Z' U; M7 n5 q

# s: b4 p& ~' u0 q# `0 Zset-plot-y-range 0.0 ymax
. M- l) u  i7 x8 A6 W8 s
end- n! e9 g8 Y! f4 c/ o# z5 y
, [4 P/ a8 G" j9 H
to do-plots/ d( |9 A& z  Y0 ^4 m
set-current-plot "Trends-of-Local-reputation"9 H+ d- v! O( u+ U) ^
set-current-plot-pen "Honest service"/ T5 H8 Y. ~0 M! _' T: `6 |  o
end" D4 J1 D9 u& _" C  R
; L0 F' k0 a" Z8 }
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
7 e4 a; v) U4 x/ c) m3 G2 G
, O) Q8 t4 ~3 M' l, M这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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