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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:
# R. ~) G5 S3 ~& [) xto do-business
* X+ W- w. K. Q) V0 x rt random 360# m( X7 L: @) c% x- q
fd 1  p) V+ p$ N. D: [! V- V* e1 b% u+ W2 G5 W
ifelse(other turtles-here != nobody)[7 [% C4 t0 T$ i7 P3 I; `
   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.* \/ ]' k% J& g3 a8 k, H- D0 Y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 G( T0 i( R' e/ R) D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  Z% {- h# c% K2 Q9 B( Z0 b1 E  p
   set [trade-record-one-len] of self length [trade-record-one] of self+ @1 `; T5 {* J, g$ M6 A; @1 B
   set trade-record-current( list (timer) (random money-upper-limit))
+ v7 _8 b6 @# O. f$ e) c8 I3 C) P
问题的提示如下:
* \0 e5 m* A) |! s, c7 Q+ N- N) l9 D: \- c! f# R6 Y
error while turtle 50 running OF in procedure DO-BUSINESS
* o" ?" R3 R" [, Y  called by procedure GO9 U# p! f! T+ u5 m# x# r3 T
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 {! C1 H, n2 j2 b
(halted running of go)$ @; B! r. }  k" R- O. i- J1 S

- k- _5 V% k0 b5 v( g2 h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~~
9 J! i4 M  ]) V) X" A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
2 j& \, g; i+ R' t8 r: X0 j  Iglobals[- V! S) ?, Y3 @+ O% e9 C
xmax2 [0 F% o* p& @6 u
ymax( K! ^1 i- s! E" S3 z
global-reputation-list
: [0 I& R- V  M& k# O
) ^6 z+ s( q% S;;
每一个turtle的全局声誉都存在此LIST
% _/ O; s4 c+ p; t" jcredibility-list; V8 `* I. K, Z+ C& V
;;
每一个turtle的评价可信度
, @3 ]3 j" }( a' K, g2 c! n: mhonest-service
) K6 e( w% k# f; r" M+ @6 m/ Lunhonest-service
( W6 ?5 a& L1 R. noscillation
; ?) K* G. a4 V2 K9 Q  lrand-dynamic
# ?' u8 H; O5 x6 j8 e]( H4 {$ e# Z1 F8 m  T3 f5 W$ R
! Q8 ^* }+ h( S% c4 l8 A0 D" p* t
turtles-own[
2 D# d, y& f* s8 p# N( p! q$ wtrade-record-all
: J+ C5 p0 w. ^% P. v  @! Z;;a list of lists,
trade-record-one组成
! @/ s  H9 q0 P4 B; Ytrade-record-one
0 C& G" @2 r; F' u. g: m;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% D' F) u/ O6 b! f& z' L. \

1 h" ~0 Z( `" s& ~; s# |;;[
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]]
4 H: [  [( o* e. l$ P8 wtrade-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]/ e6 y; }* i) U+ X3 v
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
7 z( @7 m) W2 U' k, |neighbor-total# E2 b7 B/ v: M7 S. B  g
;;
记录该turtle的邻居节点的数目
2 k# }  }) [  W7 {' C! J) Xtrade-time
4 @. }, |, B, P;;
当前发生交易的turtle的交易时间- @) _1 M0 }& e5 y
appraise-give
& z+ w4 a( G) k: B; }8 c;;
当前发生交易时给出的评价
7 L8 p$ f& Z9 N8 i4 Iappraise-receive
, @* P0 W; x! D' s$ e;;
当前发生交易时收到的评价0 j$ O/ E3 K7 d$ G! x* k
appraise-time/ W! N* ]4 q4 K1 ]; \+ d: x2 @" G+ `
;;
当前发生交易时的评价时间
# x4 I) P2 ]) _$ w) v! o( P! Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉) @  S" J; Q+ i- d" s
trade-times-total
# c6 _1 j0 `2 t  H8 Q;;
与当前turtle的交易总次数! `$ q2 U, e0 U
trade-money-total( ?7 ^; g; M" B% B6 ~* C
;;
与当前turtle的交易总金额
% ^6 a/ A& Z9 V! i. {2 g) clocal-reputation- D) V+ v! J* _- w+ R
global-reputation7 ], Y' b, `/ {6 {7 y
credibility- ^' Q0 \+ ?2 v; l- |* W
;;
评价可信度,每次交易后都需要更新
( g& x/ ]0 A8 z. p: ucredibility-all; N5 i4 g) \0 e5 j: R$ V
;;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  s8 C$ U4 D6 N4 ?  v" F: _
. }3 T( A- F+ H
;;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0.5  x' r% P# u# Q
credibility-one) L% m; B; s* S: M5 q
;;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- E' F0 F) x( h9 {# v/ ]5 o
global-proportion: W$ t7 e5 R' f: e6 e! Y
customer
" W# @% ^. Z1 L7 q* acustomer-no5 M- L* p, V3 d0 g$ m: N
trust-ok* j; J0 f" b6 N/ {% h  B# J
trade-record-one-len;;trade-record-one的长度
7 r& B  T. `) S]
% u8 {4 I5 G$ c- c+ U/ A- A
  m9 O0 a  V1 t7 j' z9 h;;setup procedure
; O$ r& E5 x$ n" l+ x; s) Z" l
3 u9 C. F& I' E9 F( z2 J. P4 uto setup
9 L/ |5 [/ ]' P( R4 m1 o; O* N  l
7 U  h' T$ d4 ^+ D2 f8 B: yca
2 e& Z* a" |7 a9 V
% [( k* K& `8 w8 a
initialize-settings

' B5 y) s( k" ]# y+ K
9 a" S% l( G, B* m, Bcrt people [setup-turtles]

6 T& N' x, p7 k6 l6 f
: M" Y8 Q1 r$ H' i" G9 Kreset-timer

2 [. s9 M7 w) ?
1 \0 e6 s  v1 npoll-class
$ C/ s: p* V7 c, T; I+ ]; j
+ F6 u: n/ g! a6 D8 \0 i5 ^
setup-plots
5 O7 n. U( h/ X' }) Z

) C9 R1 L4 a- l0 w2 edo-plots

* B5 j& G0 o$ jend
% c  [: C  L2 {  S+ r; m: A  G: W" X9 W
- b6 k: n' O  n7 _$ y2 k, Eto initialize-settings
; t" g% ^4 V% \# P; g$ X! [" p% D# v
set global-reputation-list []
) N) `0 }; w' |9 t6 t

2 C; K* F) R( S0 j0 c5 Cset credibility-list n-values people [0.5]
3 Q9 I4 O/ a" R, e) v
/ d$ N3 ~! V& z' `3 i; f- V
set honest-service 0

) Y7 L# U, W9 x' ~
# c" `$ r& W4 w  x0 Sset unhonest-service 0

( z8 c8 c/ f; m0 S
6 h/ W+ ?1 o4 N$ d( V3 p% V0 B" o4 iset oscillation 0
& k8 A- t; W( B% j' d

2 J$ ^! `' a$ j. H# tset rand-dynamic 0

8 c6 P* t( y2 a; _2 ^) p8 wend4 @4 F$ k: t% r/ }, a" |

7 f' \. E) U8 @& K* q8 vto setup-turtles
0 F: I2 n' {6 g2 a- s: ?4 cset shape "person"$ U  r9 a3 b6 J0 c3 R% z% w) U8 p/ F
setxy random-xcor random-ycor/ d2 _2 [. e! ?0 }" E2 \
set trade-record-one []
+ w# A* C5 W/ R1 O& F; |9 c
8 e* X+ l% P6 R# {  ]5 Z4 G3 K' x
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ {  M7 J9 U9 ]" p1 `
$ d: V0 F$ P1 F9 l5 L& q9 j+ F3 r
set trade-record-current [], k, V% [+ r# t3 a' S$ ]! a
set credibility-receive []6 U) X6 h/ ?5 _# }1 V
set local-reputation 0.5( Z$ B& e$ t3 z  R0 q' i
set neighbor-total 0# X( H4 N1 a) X) e8 |
set trade-times-total 0; I2 p) f& X# Q  R. J5 K, D
set trade-money-total 0
( ]: u3 h7 K7 ]3 ?" Jset customer nobody
& T) N( s. b4 l' u$ Lset credibility-all n-values people [creat-credibility]: L6 F6 A/ g0 \
set credibility n-values people [-1], n3 D5 t9 F! |, \: M, `0 ?6 c
get-color' M0 q) I/ `4 j" v7 T5 R  ^

" [. E, G4 q# b  f" {end( j0 g: ^# f' y& l  H9 \7 T3 W4 S
4 ^, `3 [# U. k# S
to-report creat-credibility
* h# S8 |* ]' V/ `report n-values people [0.5]
, n, C8 g: b; ~5 k5 send* x$ V, b, m+ g% e. U7 _
2 x, p  k& ]+ W/ n6 e
to setup-plots
2 i  u# {  C8 J. Y; o1 _) M  S/ s/ M+ P# ?+ F/ ^* F
set xmax 30

$ m: z- `  z2 }0 j) I) K- r5 x8 [  A1 ^
set ymax 1.0
' s: I6 H- Q. y& X3 P+ R* R$ j

3 ^& D$ x" C2 P5 n! p8 N; j& @clear-all-plots
5 r2 H5 T' n* @6 W1 V7 `

1 c5 f' h& J. L" {) r+ zsetup-plot1
( I3 ?4 l. J7 o! L+ Y

6 I7 W6 Y$ Q  q; @5 Y# ]# K8 lsetup-plot2

( |" D0 m% O, p1 E' h; U, ]
  \! E, `8 p$ u8 L" s+ G& ]4 V$ Y' xsetup-plot3

* _) H6 q% {0 T6 f% I4 S3 u: ]: `end
* I- \1 C0 n, ]  K* g# [% F5 K5 d5 o( ]1 Y9 X; q/ A
;;run time procedures) j5 c7 o# b; g1 u* I3 Y! {1 f
" w& }' W: ~6 E' _
to go
& B+ x' K. t' u. U# @; Z: a) y. r4 F' G  N
ask turtles [do-business]

' X6 s/ U% W. W9 G) B: Hend8 @2 C. U$ a4 N. p2 L- B9 K6 Z- J

; n, x" H5 k! Kto do-business 9 O# l" s! i, S$ Z2 w
# }! d/ ^7 ^) x- b; u

; \( O( @( R0 C% a- h- C8 Wrt random 360
2 `7 c0 i8 r" G" m+ c
0 B3 q/ L: U, k: L! \
fd 1

7 g( W8 M4 H7 x+ x4 t0 V3 R  |( m; K3 C8 S
ifelse(other turtles-here != nobody)[
' `  M& I' c  L0 L2 s( d; {. ~
8 \) Q( |& g6 L3 t9 _% j
set customer one-of other turtles-here
: S% M4 O/ X, O" \( U

9 b- T" T0 J' w) w( h;; set [customer] of customer myself
- H, W  d9 b: a. [- z. l

+ ^9 }/ x4 x2 ]+ G1 @set [trade-record-one] of self item (([who] of customer) - 1)
, T( `; }5 n  L, D9 X0 R* V! }[trade-record-all]of self
) h, l- [5 Z* D1 n0 T2 c+ v;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* T; v$ S* G& J) U
0 P! W1 v5 \' S1 l* I* Q* q0 K
set [trade-record-one] of customer item (([who] of self) - 1)8 Y% C- \) o2 D; U
[trade-record-all]of customer
& M' W) g- M; u  B2 X
) S; e2 T/ R: s9 m
set [trade-record-one-len] of self length [trade-record-one] of self
% q7 E2 R. l2 {. J5 Q4 m- k
  o0 C0 q) }2 k3 y- a
set trade-record-current( list (timer) (random money-upper-limit))

: m2 {- W: N7 ]+ U! M2 H3 Y% {5 o& R3 I. n5 ~* L, ]/ I% Y
ask self [do-trust]# P% ~- }& v8 V
;;
先求ij的信任度
4 S. B) T- b& k1 [: _; H' r, I
& o! r, I& O$ y1 O1 T6 N  ]if ([trust-ok] of self)6 B! c! m3 _+ n2 S% H
;;
根据ij的信任度来决定是否与j进行交易[2 r6 z5 ^5 r  [+ \  j& W
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& l5 H6 r& W8 W" w9 ~" ~8 `5 {2 `8 T# R# N* |( O4 {7 V; f  }
[

% u: b5 i: k0 x7 M# D
/ J5 x6 B. R  `! o. J7 mdo-trade

1 |, Z5 Z  N) Q
+ c' W$ a7 h, M1 l6 e' xupdate-credibility-ijl
1 \1 Q0 E& h& g; [" p& ?

4 o: ]- S7 l8 p4 l' i2 mupdate-credibility-list
; o2 @0 B, r: L8 |7 p. M! u/ s

. g( K% D% y8 O7 t9 ~
% q6 o# T7 |$ u) i3 y/ }$ Uupdate-global-reputation-list

4 G/ I0 f8 }" L
9 C- b! \3 C5 K, x) ]; Ypoll-class

' w7 _9 {& D3 V* f  Q1 {, u* f4 T- h0 A- P
get-color

1 N( Z" R- J/ R* k0 }7 I$ ~& S" {& z! Z) ]
]]) q, v! F4 U. I1 ?$ Q
( o/ H% z' X0 p3 S' ?
;;
如果所得的信任度满足条件,则进行交易0 V8 t+ y6 u4 ]
8 k1 R( M: x# n$ ]' [
[

% v, a9 P  T+ Q# K
9 h( X# \& l. @" {rt random 360

/ ~' C" z/ G7 \1 q2 G4 a3 j
  T! K: d* w4 m7 d4 ^fd 1

4 j1 q1 ]) ^1 c. ?7 R; y" D
. j2 e- y8 }+ K: P! M. Z9 m) T6 `]

! V/ w' \8 \% p/ Z# _9 S; o% a7 j8 R5 g& r0 d8 r9 ^: X
end
3 o" }' {  ]  Q0 e7 @

4 W1 Z3 {8 q  S1 d( ]' Rto do-trust
- s: {) }5 f* q! r- iset trust-ok False" K: t( v4 K, k3 ]4 A* x  w
. d  Y/ o! {# b0 V0 B

' x; b! [8 j$ z3 N. m+ Ylet max-trade-times 05 e  _  [' w, }) R; d. n' E9 A
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 x/ h% q" [1 Y2 p8 Klet max-trade-money 0
4 Y1 _1 w# {* xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ G% k7 a$ \; N8 l* v5 ^; C, I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 ~7 C/ E2 z! L7 t4 W

$ H/ |& s. a4 y5 P  r% L

/ p" r' D. r2 E9 w$ ~get-global-proportion
4 T; c4 J4 \: D  \let trust-value! @" u  ]  ^, R0 b; n9 o
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)

- D& N0 l$ d% V7 ?if(trust-value > trade-trust-value)/ M+ u" B+ T. I
[set trust-ok true]* _( A2 X0 x) _4 I+ K
end0 u4 S  n/ ]. I( r
$ f$ d! |8 g* O( o' \0 E
to get-global-proportion
  c- F  U. a% U' Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 r1 B, R' N; n4 i+ I, I) w[set global-proportion 0]( G) D4 c8 d5 l) [- P: {+ t' N
[let i 0# J. ]6 {- m1 z* \2 |
let sum-money 0
$ S7 ?0 {2 _; r' Z  x3 Dwhile[ i < people]6 @. |) Q/ |: e" b
[
0 f9 S# C; s6 f& z5 _6 Qif( length (item i
5 z; Y' p) _/ \8 `[trade-record-all] of customer) > 3 )

& n, [0 A' `% v' e$ b: j& ~[1 B9 ]4 N3 ^9 i1 V
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 n* _( Z. H. p' p: Z3 x8 z2 j
]( L7 A% S, Q4 X; g3 Z+ M7 i
]
" Z/ N" L; U' }let j 0
: k- z% O. K, |& L. p' A7 ?9 clet note 01 O7 i7 ^' G% s4 ?- J$ L7 D" p% m
while[ j < people]' T$ d& J  j& i4 g' k
[
( Q- M. u* n, `+ }; F, S* e! \  O" aif( length (item i7 V" A$ C6 X1 V6 O: T
[trade-record-all] of customer) > 3 )
0 S! }) o4 y% ]  v& `( c
[
1 g  {! G# K8 w2 q2 {- D2 f5 Jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ i* K2 b7 S( f8 J[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 u9 |" E( k1 y0 u# g. q) V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 \2 ~/ a: q0 v]
$ l- x* z! q% ?+ v  P% \, u]
+ ~& b' s( V+ c+ d0 Nset global-proportion note; s# h) x2 X+ x
]! k# q7 g% @: y- V7 p1 D
end
2 s( J% ~8 O* J+ Q! \+ k: ^( ?3 i# e3 z* z0 y/ _3 ]
to do-trade. r- g: y5 j. ]( I+ U/ Z8 G" x, [9 L
;;
这个过程实际上是给双方作出评价的过程
8 j% z1 U7 E9 t+ r) bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: S2 W1 ~/ N3 Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 v' y3 {# m  I4 v7 wset trade-record-current lput(timer) trade-record-current; S* |. K, B* r) w
;;
评价时间# g& R2 c. W( r5 }/ Z7 s
ask myself [; N- I( x9 {+ a/ R3 Y
update-local-reputation& ?& r0 v, Q5 |, s( e" L2 N  I, J
set trade-record-current lput([local-reputation] of myself) trade-record-current6 z) F- K; r" [
]7 z5 V4 `# U$ G) b, H* `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. V1 c9 ^( r+ ^' L
;;
将此次交易的记录加入到trade-record-one) m4 E+ }& W. a3 o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' `- e% J8 I5 w5 b4 olet note (item 2 trade-record-current )6 u3 ?/ @# e  a7 ?& e
set trade-record-current
8 j6 r$ Q0 k  f6 Z(replace-item 2 trade-record-current (item 3 trade-record-current))
: E$ [& @; X- [" b8 I, {
set trade-record-current$ |6 V* A) c4 [2 ]7 @
(replace-item 3 trade-record-current note)/ \( f7 A+ p7 I  S1 |

* n) i4 g0 U4 e. }6 p, ?7 u, \0 t

( K6 Z0 P* Q6 k4 Mask customer [
* q8 o9 U  _1 U6 U% ~update-local-reputation& R. ]5 w3 S. l6 S/ y: t8 v( @) x
set trade-record-current& f9 R5 y3 i& x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) a" `# T! X6 ^1 }9 j]- O$ t$ E' G, G4 f% ]0 P0 c
0 X, U4 a$ O$ e% C# t

; X) T, a9 f2 h( F" Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ }0 ^; P% E3 y  n

7 N% R5 R. Y9 `- `2 {1 p' E' x2 m$ mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" V+ m. C& u. n8 {  n+ w;;
将此次交易的记录加入到customertrade-record-all
/ V, ~& ~' Z* r8 J5 _& Zend+ }' X3 J' }9 m
8 o6 L5 Y8 P. e4 B
to update-local-reputation
+ u+ i( @1 i4 s3 C9 ^6 S( w$ p8 Zset [trade-record-one-len] of myself length [trade-record-one] of myself4 m, k6 c7 ^1 D; v+ H
3 P) ]4 e% K# |4 T3 }! B8 u

) e. n0 q% C1 S0 G;;if [trade-record-one-len] of myself > 3

( k9 a- l; |7 T$ o0 n5 D- a- Supdate-neighbor-total4 q  N% K2 T, H
;;
更新邻居节点的数目,在此进行; g' B' h# W% T: r9 Z
let i 3: X% B( ~  C& \' y
let sum-time 0
9 G% s5 H* C+ Z& x% A6 `( Nwhile[i < [trade-record-one-len] of myself]
' t( m+ e$ \- |" [1 t[: K6 i+ F$ a& ?3 j* {% {; ~0 P7 `
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! Z& ^6 c# f2 p' o$ C# r& y! N
set i9 Q" g. a  B4 u* q2 y
( i + 1)
$ {+ m8 {6 Q8 ~( d5 h* c' a
]6 G  v' a" Z8 b$ ?/ y& G
let j 3
% H/ z1 z" Y; {0 F# Z7 A! slet sum-money 0# }" x0 o7 o$ [7 r
while[j < [trade-record-one-len] of myself]+ m! ]' a6 R: }7 o$ @  g
[2 j9 d0 H1 Q8 m" _$ X4 s
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)6 r; @1 v. i! s$ I3 j: a- s
set j
; a4 K+ z! g$ N, j* v2 d! _% O) L( j + 1)
, u1 b/ W. V7 O8 X
]4 M% H' ?5 P6 e5 o
let k 3
7 L5 c" L; w2 E: Hlet power 0
7 Q0 _1 w1 D. ]0 c# ^" Jlet local 02 E+ W. W( X/ X! s& J
while [k <[trade-record-one-len] of myself]4 Q$ k3 S2 D8 N
[
* P6 C; Z+ x: J. I# M( ?4 Gset 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)
/ \  R3 H: m$ m8 ^2 Hset k (k + 1)* t3 W2 U6 F4 z
]
/ e' I$ i9 Y) v9 k; M7 V: Aset [local-reputation] of myself (local)6 M1 [# ^* @, j) F# {
end9 t% i3 I: y/ v: G

" j% j  S# _1 Pto update-neighbor-total
  Q& U" k0 M( V) x; t: z
& S% F. l; s" V$ V1 y! `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 r2 h. j, V2 j3 z3 ?, z) `: n6 p

; L  A1 t. n, Z  F. E. i
4 B" o% h/ Y: E* F# o; I
end
% e, N6 [* z, _% Z$ b% M" t1 G1 |
to update-credibility-ijl
- S# Q; p3 f& k1 w% R! Z5 A/ K$ E2 b2 x* |
;;
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。& r* m' `" L+ {: l7 c' m0 i
let l 0
; h& D9 M0 M1 }while[ l < people ]3 s" @9 d$ A" \) A/ D0 B% F
;;
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( |& w5 h/ `6 o- ^9 R+ v3 z
[5 S+ Y8 ?  l6 h1 t( l! A; T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" y, e" f3 b; m% J
if (trade-record-one-j-l-len > 3)
8 E6 H7 x0 `+ x( F3 i' _[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
& L4 ?/ b2 }3 R/ _let i 3- {6 ]' P) F( s- P$ Y* Y% B" \, S
let sum-time 0; I# e& }7 f1 I" k4 ^( W
while[i < trade-record-one-len]
2 |! p2 `9 M' J3 a- S+ f4 V[
* t) [$ n8 Y2 X) yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 J/ D) m; J7 G) c6 w
set i
$ h; |' V  A) \2 C( i + 1)

- ]3 U3 W3 }! c; A5 c3 E! }+ H! D) E]
1 @+ Q) {- U; }/ t0 U( @1 N* s+ Xlet credibility-i-j-l 06 H. D( M2 Y; Q$ I0 o. Q* ?4 u' Z
;;i
评价(jjl的评价)
- U4 J7 h( q. K/ h& _let j 3
$ s0 A7 S* N* o6 [$ ]: rlet k 4; @: N4 Z2 h+ @0 {0 e0 q
while[j < trade-record-one-len]
  J  c$ U' F5 {9 P0 H[* v0 z4 Z: i% x
while [((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: {" O+ K% o1 R
set 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). g. _8 y1 L( a* h* V% Y9 }
set j) H" P+ k2 c2 u7 M- Y0 P
( j + 1)

6 `6 p! r6 P! j9 T$ f  p]) }/ q& ?& U, `/ _1 l, Z0 D$ M; {, M
set [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 ))
4 V" s3 c' E" b; v0 M' }* P- ~: ?* ^% A8 [
2 e7 h" b! L; |8 v: A9 ^& [" z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 |- U2 P. q, O( G" K/ s
;;
及时更新il的评价质量的评价
2 K' ~0 i' R( u, jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% R0 u, `" q" y4 l/ y
set l (l + 1)% r) L4 R7 M$ k
]1 ~& y2 {, v: p/ L2 N. D4 \3 K3 |+ e
end- Q- m; y; _! |. n* a( P1 {

5 N- ?  X$ h! I! ?" ]5 N' Wto update-credibility-list
1 T. N( c, @3 U, Xlet i 0- M( v8 E6 y0 ^" r' Z
while[i < people]
7 A$ m' z0 O. g! i* O3 P[
' Q$ r1 @5 t. Wlet j 0- o6 C# \; v- k9 h( o- Q
let note 0# u1 e1 @: X; G
let k 0
( Z2 z  b5 |3 [4 ~5 K* I. l;;
计作出过评价的邻居节点的数目
# @9 g: r) R& p' M/ uwhile[j < people]
; J/ @0 c* i0 }+ h* \1 _( q# Z[: i  U0 E/ ~# B) n5 o5 p7 w
if (item j( [credibility] of turtle (i + 1)) != -1)
; R! `2 W; h  }  C) x;;
判断是否给本turtle的评价质量做出过评价的节点5 G2 ~9 Y1 x: W. |( L" W( ?2 r
[set note (note + item j ([credibility]of turtle (i + 1)))* `  D/ f+ h& B% r6 b5 ^7 Q
;;*(exp (-(people - 2)))/(people - 2))]
) o2 |  c2 E, d5 N" I# g$ F/ Z
set k (k + 1)/ Z8 K. F# A5 z) k% n" n
]6 h- D! \- a7 C! E
set j (j + 1)
, }. P8 F& D  i7 b% V6 k6 D% []# r- \" s( E: |4 y9 _
set note (note *(exp (- (1 / k)))/ k)
6 n, k  D) p5 |set credibility-list (replace-item i credibility-list note): ~6 l- i* a. v* y
set i (i + 1)
6 l$ L. F: h  y]2 L- ~  c: B/ j
end5 |7 V& H+ V6 w' l5 y5 ?( E

2 O9 k$ q/ Z7 u0 h* z4 W& nto update-global-reputation-list
% M* u# B* u/ F, dlet j 0
" }/ h- D# \3 y0 V! f4 u3 |while[j < people]$ V: i( W5 w8 h+ Q
[
1 F$ p) l/ i. ^! Plet new 0% X& j/ P0 N/ s9 s
;;
暂存新的一个全局声誉" j) C; H, H4 w% `2 f
let i 0
% i6 x  O: F, O  |7 ?8 }let sum-money 0
( e) @/ \7 c# J/ G* w2 ?let credibility-money 0- h0 @' ~: }) x5 b* B' z
while [i < people]
8 S9 c3 E2 Q0 B2 M[% g6 i$ N; f2 Y, C% P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' t' |4 \# p8 X/ `1 f
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ j$ }4 G% D! D) \' Wset i (i + 1)
5 E8 M2 f" {; ?! N" G" B. t]/ s' ?+ z! |( ^! P( u
let k 0  L. k$ V# P& h" H' h8 w
let new1 0. G6 e$ w$ y. f4 h& f8 ]7 {% ]- w7 k
while [k < people]
* U8 X/ ~, X5 w6 ]* u- T- E8 X0 N( _[+ a: F9 k6 z* T4 Y  v4 O. F
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)) T  v+ V" [  v5 t  B
set k (k + 1)/ T. e6 n, w0 M' D& B8 p; P) P
]5 W; k$ s. v' o7 D6 g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + x. n' b5 r# A  q1 c- J- n# W7 ~% ]6 P
set global-reputation-list (replace-item j global-reputation-list new). Y2 q$ I0 ?- z% n# R
set j (j + 1)
( h! \9 g7 v. b5 a% n]/ f. n% `2 F! |. v& k" ]0 j7 n
end
7 V3 n( [" S1 A0 m; [& z, |3 P3 L. G" z+ ^

) V# o6 ]$ c2 I, {3 W9 K6 b
+ F4 Q  L; h; _! o& Pto get-color5 J5 X7 o( T% k& ~6 L/ Z* H
/ y1 F( Q- Z! V, B0 j; F3 `
set color blue

5 W+ }9 Y( `" c7 ]end8 v% L- c" O  y

+ J+ c; j' N6 D- [$ \to poll-class
% `( @' R1 b0 H! {) g/ w0 R" {7 uend
# l" |; n6 O' b" h( Q" V- ]  s# B  @) m' b: q! k/ c+ m& `+ q* M
to setup-plot1
4 [$ L6 `+ E$ ~2 N; Y3 v
& T  o  i7 }) t! K! }set-current-plot "Trends-of-Local-reputation"
1 W0 I1 o4 r  [1 M3 g/ l

1 }7 z  j' W8 I' S4 L, sset-plot-x-range 0 xmax
8 m, a6 v; w) i* y# b/ t

: }/ X0 [7 ]; o5 h. a: |, |set-plot-y-range 0.0 ymax
: J; g2 d# f7 o, l- P# I
end: y4 M# O: j8 q& |
: v* y* y) s" n1 `4 K0 c
to setup-plot2
5 i! R) B6 R/ r7 Y% r
, m- W; C, ]# C" O+ u) Iset-current-plot "Trends-of-global-reputation"

" W! v2 J, l' i# o& j
" o" ~! A% ?" `! {set-plot-x-range 0 xmax
6 s7 B3 e, L; k: S& M* P: g, K

7 H/ M0 u- ]& t% Mset-plot-y-range 0.0 ymax

7 T5 \9 k! V# k, \end9 |4 e& c4 n3 I& f0 |) G# L
: {$ k, C9 p/ t3 n( d9 P
to setup-plot3
2 T3 N- b* g5 A
/ b% v1 a' `0 c8 \- m: L5 C* Nset-current-plot "Trends-of-credibility"
; X2 }1 I7 U; Y0 V
- I$ ]+ V/ V0 f9 h# Q
set-plot-x-range 0 xmax
  z0 x. v' a* O2 y& G2 E

2 u- a8 s0 N7 v: [' u; N4 E+ Kset-plot-y-range 0.0 ymax
0 R. b4 {0 ]4 Q5 y  \7 h3 f1 W( S4 v  U
end
6 x1 k7 H6 d8 M* E  c+ T, A
  p; T+ _# g9 W6 H/ d4 K: bto do-plots
- o5 v; T" A+ S- J/ ^set-current-plot "Trends-of-Local-reputation"8 z" r  l, P4 W$ V
set-current-plot-pen "Honest service"  c( }5 ?0 A) E" D
end" t8 l1 C9 {, ^  e; l

; g: S- V" c" q5 |- g* h- E[ 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.& y( f" [2 m0 t. z* }

0 f3 l2 {7 V: j& C: `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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