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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:
$ }# t, Z3 I4 Z! i6 Q4 xto do-business
2 ]. V  [# ?& b! i$ o rt random 360
$ h( K4 l( R6 _* l  ~ fd 1
  ~, M" {) r0 c" \% r# S! | ifelse(other turtles-here != nobody)[9 l5 L# e1 k% p
   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.
6 {+ W- [2 q6 b! n$ L6 \/ P) E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 d2 Y$ l3 V# x) U" s
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 C+ O( _# |5 f9 ]7 F; W
   set [trade-record-one-len] of self length [trade-record-one] of self8 I+ a1 A. w4 u# x' |) P, `* x
   set trade-record-current( list (timer) (random money-upper-limit))
& A$ f8 ^' S: T9 D0 }( h( e; ]5 R9 S  C# S0 c  {6 A
问题的提示如下:0 w( B  u* e3 k& e8 c) c
0 J0 K9 |6 d! N
error while turtle 50 running OF in procedure DO-BUSINESS# _* T1 p' I! c, p2 [6 k
  called by procedure GO
8 R8 E% I! k6 h, TOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 F/ v$ ]7 H. q  p
(halted running of go)
* B9 D, n: r1 C4 g$ M# q+ ^) r; t3 u
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~~# j; Z" j2 v  {, |& T2 H
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
' S( B) u1 v; w; X, g# P! J$ wglobals[9 j3 w; |* I$ N% k5 M  Y
xmax
  J. b. e2 ]3 E: d0 n! ]. I. ^& R5 K! jymax
) M7 }0 V2 [7 r& b+ k4 V) [global-reputation-list
2 v- X8 e: m% f8 N& l( n% \' M
9 T' g: \$ j3 K  h, f. m- W8 L;;
每一个turtle的全局声誉都存在此LIST# U) `1 ~: [/ y+ F- ?' Q0 I
credibility-list
) y4 x! @9 ^, b0 W8 y;;
每一个turtle的评价可信度
3 a- Q9 B& E5 X7 x2 }. ghonest-service
' Q  D5 d* I' d! yunhonest-service
6 W& A, \& x- A& Zoscillation( T4 v) ?5 B  h( R2 z! L. N
rand-dynamic
( t) P, R0 X" L# u]/ g6 s$ M; c( o$ V- N
* L+ W3 O& z0 }. d* _+ X/ _, o
turtles-own[
5 r, }- Z* n, t$ b$ `* Etrade-record-all
- z) N9 K3 P7 W;;a list of lists,
trade-record-one组成) i# y% _5 L  M
trade-record-one) v9 o7 B5 }8 m7 o7 H7 l$ Z1 x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* A7 i/ }) S, F; L8 C  v) Y0 d; W" r! V" R7 |( 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]]3 d! V. |. U0 K! k, u" x" I& Y9 _6 C
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]4 L) {1 d! O/ d
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
9 A0 R, }0 G- J) Jneighbor-total
* O7 @, D7 @# X! K  a. a;;
记录该turtle的邻居节点的数目" i7 \0 H6 [6 E
trade-time8 Q% P& [$ Q" [3 ?$ R
;;
当前发生交易的turtle的交易时间% _+ G8 t- P5 y4 C
appraise-give
  U: V, R3 s: r. r# I! A# a7 ];;
当前发生交易时给出的评价
* f7 k9 N0 U( e- K5 Q7 vappraise-receive' z# I7 g' s9 {7 ]# Y
;;
当前发生交易时收到的评价
0 [$ J$ S- m1 `# B( S' A( x4 R8 wappraise-time
0 E: s: F& q" g) O+ I' ^& G! O;;
当前发生交易时的评价时间
: ?+ K1 E9 w7 E$ c! Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉! O8 L# T- a9 v& D8 N
trade-times-total3 ~% A- M+ ~0 f2 a. q8 ]
;;
与当前turtle的交易总次数
, G: F3 \' p8 [4 ]& q- Vtrade-money-total
5 }# h  S1 ^' Q( ];;
与当前turtle的交易总金额
1 }7 I! T( S. Z$ A6 V' e. J" v% ulocal-reputation/ j$ [: @6 C1 L- F1 A
global-reputation
& f. N, a) k9 g* Zcredibility/ Y% ]5 v: G1 q. t/ x5 U
;;
评价可信度,每次交易后都需要更新
6 V+ u) z0 C; Y( Ocredibility-all) p( P7 Q- \0 {* h4 c# B
;;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
" Z9 J; `8 h0 W& H: L
# @6 T, q4 b6 b) _0 n' I;;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! A* i/ w- f2 n4 ]2 ^" z
credibility-one
) R; ?/ X( V& P;;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
4 W" ~. }1 h: N( u3 A9 Iglobal-proportion
+ U. Z+ K& F5 h. _7 ncustomer, k0 v. P6 a2 A) s
customer-no
6 \  m: ?# u4 z- _: [9 Z# }: otrust-ok% H0 [4 w1 C: M" [. B+ `$ B+ X6 x$ f
trade-record-one-len;;trade-record-one的长度
- E- _1 ?) S6 Z; m. m9 K]8 \% ^! Y! \! q3 r" t

6 o7 B& o9 B  @;;setup procedure+ m$ B, B3 C3 c' Q& E: S( X

4 a" A8 e- i; C4 ~6 Q! \1 l/ ato setup  Q# }- j* y: h; S5 C6 @5 q
/ r- O$ q4 \2 y) a, E
ca

3 p4 B6 b4 x6 }3 e3 B7 x0 c
6 s- a, d) D+ N9 T6 Sinitialize-settings

7 h2 Q+ q( \+ l! b6 a
/ D5 G! s* w1 {$ b0 {5 T0 d( e$ B9 Kcrt people [setup-turtles]
6 J7 a; K% f' Q: o) @3 T9 S* B
0 X- T% |7 P- G
reset-timer

1 D" Y# _" v8 v0 }$ V7 l2 a1 ^' W( ^8 D0 ?& O% o/ T" e: H3 W
poll-class

. |6 Z  S, s- e8 j- u* C" H0 p
: V1 _; Q# m$ J: Z- \setup-plots
8 l. M% W9 i! J. x$ u
1 [! s3 N) e; {
do-plots
! k: L) b' r" w2 B# a1 K* t
end
6 `" v2 X' [: S3 i  ]& ?9 A! P
" A% A. p/ L/ c/ j; R" ?/ G0 M/ Qto initialize-settings
8 P2 f) I, V3 o5 D
* C4 Q7 S5 q* Bset global-reputation-list []

# c. q# P8 {6 M; ?
* n# C1 ~& o) D& tset credibility-list n-values people [0.5]

8 c" P: H5 X/ @( [6 U: b
4 C( W6 Q0 ^3 Y. G' `6 Sset honest-service 0

3 j) E0 a+ {: [# M7 z3 I( R0 H- W/ Q; {8 W
set unhonest-service 0

! h) N+ J# N! [7 l: }5 \/ n7 S- a
: U  a: X4 V2 V: q* f7 iset oscillation 0

+ M1 R" j+ d: |2 V7 I4 X+ J( j$ I5 v, l1 m8 y
set rand-dynamic 0

  X  [( }9 ?/ c, Tend
# P9 l7 J5 D; f" y* P9 x
  S% ]* [' N. M/ Zto setup-turtles . r) i/ J! v# ]! v, H
set shape "person"
6 S9 N* J, T- esetxy random-xcor random-ycor" N% q) @4 T! \2 Q) R4 p
set trade-record-one []9 Y: h! \4 d1 h- L
! w2 c: w6 ]( g+ C6 n- d3 a
set trade-record-all n-values people [(list (? + 1) 0 0)] . E7 m$ P# E- V5 h& O8 a& D

3 V& \* M' r6 K* z& e- C" N* P7 K% Mset trade-record-current []
; t1 a" s( s2 |% L+ `% }set credibility-receive []3 f9 ~% U3 D* E) P
set local-reputation 0.50 W' y0 z3 u5 P
set neighbor-total 0) j# x, p$ D4 k3 K
set trade-times-total 0
$ _- R- f/ J3 V, bset trade-money-total 0* n+ P( K* d( H5 U
set customer nobody+ g5 H6 ^5 m# _- _) r
set credibility-all n-values people [creat-credibility]
+ O. I8 [% V& n$ d/ @set credibility n-values people [-1]2 i/ M2 s9 b" h: ?/ j( x) U
get-color+ o3 ?0 k4 G' N9 U' @2 B
3 x1 ?0 A) v& E$ Q$ E4 S. r5 O
end$ s- o4 r5 A% |! G4 j/ j

0 D  X  t5 a* H5 @: o6 _( m+ a2 xto-report creat-credibility
9 O& v1 M( e$ Ireport n-values people [0.5]
* k2 ]4 m' H8 D3 ~2 Gend
# Q* J1 y2 B' M- O6 C& F0 C6 O0 _- h  u0 d8 g1 |: z6 C
to setup-plots
9 c% r5 b2 m5 c. C8 x& ]. f* z
9 W! z! k5 v3 s$ A) D  J) Dset xmax 30

3 s! y' K' W' N) t- [" s2 k" I: l1 _6 ]6 ]2 O; D9 O9 J# C" g
set ymax 1.0
8 A6 ~5 J2 i) u6 Y" ]

* _  [" U8 T8 G# @" f' a  sclear-all-plots

9 W: k# {2 V3 X5 U+ \- o: p7 z1 S0 H) n4 d
setup-plot1

8 N( v7 j( n$ w8 D5 ?$ \& C! z9 j$ ]! V! q  J1 {+ K* I' ^
setup-plot2

7 ^9 n. z9 L/ U7 v% K# h6 E: Z# @, n8 r
setup-plot3
, M0 V4 a' v  p" H: ~
end
/ e! P# c8 w. J, v6 |7 w, U! b
' v" l2 r- ~9 O;;run time procedures
" w; }' d/ r. j" F' w" l" ^/ O9 M; v$ c9 c6 y7 D
to go$ q5 C: a# g6 t6 g7 u% {  c

8 k! d0 V4 R- u5 c0 G0 X* p& Z9 iask turtles [do-business]
; Q6 r2 R& H8 p. C! V! J0 G2 j
end/ g" O3 E& X, o! S

' j8 l8 B8 ?1 m7 o/ w# _6 rto do-business   h1 h% U. k+ c
7 U9 p- c6 \- m' ]

) {7 D& l+ \. L, }% X) o$ Brt random 360
4 a$ p& U. h" h* D5 K

0 @7 K  J, q/ ^0 r# L7 m) W9 wfd 1

: h; y! [5 Q& Q* y4 z/ Y2 T
. r% U2 b& ?% tifelse(other turtles-here != nobody)[

8 |) H. P( j- O( B% V$ e% f2 S7 y' r7 `5 |; Z+ d* k
set customer one-of other turtles-here
1 V2 ^! i9 n. u& d# G
7 _5 s3 r' \" l+ C7 C: N: J" z2 b
;; set [customer] of customer myself

1 }4 f9 V/ Z* i% w0 G; Y+ `5 l  e+ O& i  D% n& r
set [trade-record-one] of self item (([who] of customer) - 1)  [+ Q% i1 Q: y  s
[trade-record-all]of self/ t, ?6 U; i' K' _7 t
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ S; o+ L5 n3 E. y8 U, Y% \

6 Z5 _/ a4 ^% h) zset [trade-record-one] of customer item (([who] of self) - 1)% x& }0 X  o9 k7 M" I
[trade-record-all]of customer
6 ]6 T9 k3 ]" c! r0 z
8 y/ m' v+ B. P! _. k4 }+ Z
set [trade-record-one-len] of self length [trade-record-one] of self
6 a9 x2 t. l6 O/ q9 g/ E8 }

# k8 N7 E: g) v9 g" g) M4 ?set trade-record-current( list (timer) (random money-upper-limit))
) S2 ?( J8 y- Q* V1 s" |3 n

7 \  z+ s; e/ w" e2 x& |* }6 g) i! Nask self [do-trust]( v( E" r) O9 S6 ~; p
;;
先求ij的信任度, V! A, ^; [" N, X9 ~
6 r9 o( Q0 v2 H: P# Z
if ([trust-ok] of self)
- ~9 t5 d  ~) P0 U;;
根据ij的信任度来决定是否与j进行交易[3 a* B1 S. R# n8 _) c- x- C- N/ i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# P5 U" y2 K1 b: k4 g
7 z( L! w1 e1 |[
: v7 O/ [3 ~0 {1 S! Y' T7 u/ ~

" M* t6 J8 o: l9 ~' R* S, x' wdo-trade

  E# F% P2 \3 k7 U6 [$ x$ C: G
: J3 g; O, t4 x. a0 [update-credibility-ijl

, A/ A* `& E( z; x
3 n, e8 I5 J( t0 T7 A/ i6 r8 p6 Vupdate-credibility-list
8 c  m3 `. {  s" [' M4 b) U8 s( {

; }+ L* i3 K  d0 }5 L2 @
0 q; H8 t( e. d6 g  }6 `update-global-reputation-list
6 U' {: X9 m  _6 |, @

. V, V; r7 s% ]1 n7 Gpoll-class
9 [" M( k. X6 Y9 E) r/ p4 d

; @7 M3 G% x# p, {) |; _get-color

' L7 b, G, e/ H# f' }/ ^' t
0 e2 v  S1 L' x: k! B: G1 k' W* V]]
6 _; G# S2 h1 W; M
% t8 _4 Z+ O7 I) X2 Z; s: Q. {;;
如果所得的信任度满足条件,则进行交易' t; r) D7 U+ U1 Y

' M$ Y2 _. {  n5 v. {5 N[

( h4 K; j; ]6 C* X; D% B
7 B: c8 ?- e. prt random 360
& E3 A* i" ?% {9 c% D8 k
: J, e: {# O$ G& `& z) |$ J
fd 1

( A1 {- P; a- s/ M2 N# I
6 u3 @. _# U) ?0 B" K]
) e7 Y' y, A, ]5 L
2 ?3 W4 m4 q6 z4 q7 t6 c6 c
end
6 Y3 L! E# C1 A
0 E% d# f7 \! o) `
to do-trust
' x- _. G5 m2 w4 S. kset trust-ok False5 R( ?0 }2 n7 {" d9 T
  u) y6 @2 X6 x. i1 U9 t; h
: }/ ?% [/ E' h5 ~
let max-trade-times 0- n$ ?/ d" P. I- x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 ^& g4 m# w$ p  o3 }3 F; X& i
let max-trade-money 0
" C0 y4 d: c6 B( L1 Hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( r, Q  S3 c# z! \
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ }0 O6 T8 P2 s: S; z/ N! k& ^- D

7 m/ P) y. I. P% m4 f5 ~get-global-proportion
8 Q& {: i. q* ?9 Y8 clet trust-value8 e4 K/ e' h2 _4 [# D
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)
/ C  s& o+ X% C6 @+ G9 ^; U. t" v
if(trust-value > trade-trust-value)
* x0 F& e% F! J% h' i[set trust-ok true]1 D9 @& {  @7 [  o/ M
end
' e' x4 e. I' R; S/ Z, h9 f* g8 K
to get-global-proportion: `% R+ S) V( c3 |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  Y- ~4 H1 \3 F6 [4 o* B[set global-proportion 0]
* r6 m$ X; G1 z# e6 O[let i 09 m5 Y: _1 m# b9 |" l' [9 e
let sum-money 0
# s! X2 S3 E9 ^" P* Swhile[ i < people]5 ~0 \0 z  G( [) e  f6 n# S% S* B
[
6 S: i2 Y9 `2 _( ]' h  u2 Uif( length (item i, f, x  d$ E! h+ R+ v
[trade-record-all] of customer) > 3 )
' g5 p  T8 ]& S( E  D: X
[
) e. v) F5 W- a3 I2 D- P3 Kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  d5 O- E' h  j% s6 E+ w]( N+ ]5 `3 d; M( J
]
! m- A" j" m6 L5 G+ }7 G; R" }let j 0
' P% @, m5 p7 g! @. ilet note 0/ O. @. e' N; H2 a2 ]; D
while[ j < people]4 K9 _) ^8 W: a" H9 B
[: }, ^( \% k0 r# C/ i0 L) ]
if( length (item i- i/ o, Z- `) r5 r; |; b, b
[trade-record-all] of customer) > 3 )

, H( e  r. B/ F" d4 F5 s) Y8 h[
! h; }8 V+ ~- H9 a( s$ `) Eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ U# `( ^: P# ^; B0 e. d$ }* q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! Z5 o: W3 b4 ?1 i" r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  u8 S$ w8 ]1 ?. A
]8 {/ x+ c) W% g. ?6 \, V
]
: e. [0 W) M  X7 x" K* t% xset global-proportion note
# q' W; ?) j! w: I6 s# y" S5 U]7 A7 q& R: M! f5 N" F; r  {) ^
end3 l7 h' n2 o$ A: I

9 [& t8 B/ L' J  k; @to do-trade) O" x! `) U7 {2 T; U6 C. v
;;
这个过程实际上是给双方作出评价的过程
7 i( v8 N$ W! zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- ~3 X# v/ R9 a( d) ^6 \) [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, x( [) e9 J( K) V% `, \set trade-record-current lput(timer) trade-record-current; U- i2 W! r* e4 C2 ]; o' h
;;
评价时间; z* ~  B  q8 m; s% s
ask myself [
; a( k) y. Q; A6 l4 Wupdate-local-reputation/ ?2 `3 k& H0 w: z$ i5 e
set trade-record-current lput([local-reputation] of myself) trade-record-current
* o/ M7 P5 ?( U1 _7 `]
. o7 T- _# Q( E6 gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 o1 }2 P. v8 D- };;
将此次交易的记录加入到trade-record-one
5 E0 C& z; o1 ]5 g% vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  Z0 s5 ?0 }8 P( U, `let note (item 2 trade-record-current )
# u1 q/ m8 B9 A) `* X' w9 p6 P: @set trade-record-current6 w$ N8 U1 i% ~% b
(replace-item 2 trade-record-current (item 3 trade-record-current))

: w  F4 B% l; s' pset trade-record-current
2 E* J, g: [9 H" c(replace-item 3 trade-record-current note)  \5 n$ t+ I' V6 t
4 \3 o$ L% F# I3 E. n6 ^+ x0 E- ]
* q! l* d+ r/ o
ask customer [/ }4 v7 n, g3 @0 X8 `
update-local-reputation) g+ h1 |9 n/ D' s
set trade-record-current
+ g6 ^, J4 Y8 }2 h1 F(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( H6 Q7 u! O$ R0 F1 W
]% {* K" `( S% m
- W5 F3 M, V, h( m2 T( z- h
, i  Y. B* u  Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" C8 I, r/ C# y- z; |( U
! ]" I; W8 X( [& c( l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ x; u- n( `7 z- y;;
将此次交易的记录加入到customertrade-record-all
" O  O8 u; z0 |& s( pend
( w* h& A  y1 C% H' M4 F) K4 g
- o4 B; q$ ]1 ito update-local-reputation( _1 G7 k, @8 E  x, z1 A
set [trade-record-one-len] of myself length [trade-record-one] of myself3 \3 @  h4 N; W% q

: f* I/ y3 D: N7 }# B$ f. F) d! }4 j
;;if [trade-record-one-len] of myself > 3
& z" Z; Z! K4 k% m: W1 G
update-neighbor-total
8 y% `9 }" ~* C: H* ]: E2 M" D1 U1 }4 c;;
更新邻居节点的数目,在此进行2 M& B5 y. Z& D
let i 3
+ h6 C- V: i0 i; @2 M7 jlet sum-time 0/ b  D" a3 C" ~* G
while[i < [trade-record-one-len] of myself]
" R* M' ?" T) B& z! O2 f[
3 x( p. a4 \$ {8 N& N! yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ H6 {% y% L0 C" n; m, {7 rset i( Q  u+ ^8 v) u$ b
( i + 1)

0 {, }* ^% W7 v/ M. d9 z]
/ G0 G/ r  W5 b8 b* I1 y, z% U! M/ Xlet j 3' J4 r/ e- @5 @( Z! c8 m" Y
let sum-money 06 K) ]2 H% D3 O1 l' @3 b
while[j < [trade-record-one-len] of myself]
: s+ C' K2 R3 O- u[3 F# ~4 @' s% B1 ~) N
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)
+ \5 H; t1 q$ R. ?# Mset j+ U* n/ @: a( G( y. J% F0 H5 k+ N
( j + 1)
& t: y7 {( J/ p
]
0 l! B9 i4 l7 h5 S5 Z- Elet k 30 _% F# e) H; _) r' D: a2 }
let power 0- K- l% [* J2 I5 }2 y3 ]
let local 0+ A+ D/ T* \. s) Z/ U
while [k <[trade-record-one-len] of myself]3 _" f9 j" u5 R5 V$ d. D
[% [% E! |+ x0 O
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)
/ k5 J6 C: S% [+ h& N/ a7 uset k (k + 1)
( U" T4 ~' _  h+ H+ R0 `* O]
& ?% R3 x. o2 K4 P$ A8 {set [local-reputation] of myself (local), ^4 ?! l1 W/ ]' X- v
end
  r2 s" I# G& ^) s' |, ~
  W* q, X/ [9 @. fto update-neighbor-total( X( Q7 p" @; a4 G

8 I" a  ?$ O/ b4 n& {' Qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 n  h& |0 [/ u) i/ g$ h- u( I+ t: H; Y

. c) V# l3 B- ^7 Q5 X: z! W  e& e

! O+ V( g- u' ?, Oend
$ N5 G9 X. g6 y: [' t1 J1 Y$ V9 F; Q  e( \; Q
to update-credibility-ijl
, {: @' n5 r1 d/ h8 r% V1 ?5 _+ `) Z1 |( t$ D* {+ z
;;
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。
9 U; I5 r6 j1 J  E* [) Q& O$ tlet l 0
; h7 U% _( U0 i* Z5 C2 ~$ p* Dwhile[ l < people ]
* o1 ~, q& p" {' x: j;;
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
7 g( D7 ]' P: r! [+ |9 E8 T[
8 J2 t$ u' e3 {5 Ulet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* B. W7 ^) Q0 q; @0 p7 ?
if (trade-record-one-j-l-len > 3)
$ V* W" [0 m, {6 }1 Z, _" J& e7 w2 _[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$ w2 `9 U5 w: w; ^; P  b
let i 3' P: I) ?% M% a4 s
let sum-time 0
% Q% T% J9 L% s( V+ X! U: Ewhile[i < trade-record-one-len]
0 R6 c. ?; S+ E[7 x! Y* }  {" C; F% u; o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ O5 i# _& s( r2 r) u0 ?6 J1 w
set i+ u% z" t9 e9 `' S) {9 z! e
( i + 1)
% d4 U) O4 s! N
], x1 X% M" N' K8 I" Z# R8 b
let credibility-i-j-l 0
% v3 \% R' |7 B* |) X;;i
评价(jjl的评价)8 Q: W: E8 p2 }* O; {
let j 3
+ y0 P' @* }& o' alet k 43 l8 {/ \! \6 c
while[j < trade-record-one-len]4 r; g7 }! r8 J4 G3 ]: q7 u! e8 e
[5 @5 }$ Q4 T# D4 t) |' B: T
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0 M6 X8 B% [5 H( }& _
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)
7 a- u8 T) u0 l) ^3 fset j: |; o" q. D; [/ f8 G
( j + 1)

7 h+ P$ z8 `, t1 o% I2 D]
2 l& _$ r7 [: k/ yset [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 ))
" f) z1 i# [# z4 `" o1 ^$ b- [6 W2 E8 c% W
6 y  m0 H) a7 x! \# ?- P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% V& G4 D! s/ P; C;;
及时更新il的评价质量的评价
& G5 ^; D! o  @3 l" T7 E, R% V: Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" V0 Z& @# n6 s- k6 Vset l (l + 1)1 ~: R; [$ Q2 @
]$ i) j+ U7 I9 F
end
0 t- M2 \% r+ E: @9 ?; R* C" d1 d& L% v, v3 u
to update-credibility-list9 \3 g* [- \1 ~# t* Z# n: J2 _
let i 0: _1 u3 N5 D6 b9 z- r
while[i < people]
* w: }! v6 }/ L- F; ?4 l[' e$ q( p$ U; p( D- L
let j 07 M4 G. J+ E7 Y1 H
let note 0/ e% M9 E$ t! E' M; M2 a
let k 0
) h# |) K' _) y* ^7 P;;
计作出过评价的邻居节点的数目
2 ?3 M  v5 P! U' gwhile[j < people]$ @5 u. m7 n- C' x
[8 R6 }1 w  W6 Y. F1 s+ E
if (item j( [credibility] of turtle (i + 1)) != -1)- ]( G0 U# m/ y0 f, [9 l! O% d
;;
判断是否给本turtle的评价质量做出过评价的节点
( K& |0 P9 n4 i7 G[set note (note + item j ([credibility]of turtle (i + 1)))  B" a/ w4 z3 j  b2 a4 ~- z1 R
;;*(exp (-(people - 2)))/(people - 2))]
" f5 {: Z* i& C4 ^/ n: w8 u
set k (k + 1)+ ~5 B, P4 V1 D8 V5 G
]
, A5 Y9 T/ V- v3 s3 qset j (j + 1)
$ d5 v4 k- \0 p: \5 k]3 o1 ^8 ]( @3 ]0 B  x) \4 B" c
set note (note *(exp (- (1 / k)))/ k)" E# w  y  O- y, M* j- |% O
set credibility-list (replace-item i credibility-list note)
4 a2 _/ c! V; Y' I& n6 C5 Yset i (i + 1)" c, Z. Z1 L( N; I: _
]
3 B. n0 A8 P6 ~+ S: V. z; Kend
* t& t  t: N. }9 \$ f- B: a% M: [& L4 H
; z1 K4 F1 R8 r% K8 uto update-global-reputation-list
3 V! m* L- x& k( Z( Alet j 03 y. J4 t0 x/ K' z1 t* ^
while[j < people]" g) t* x- V, x
[8 {+ M5 N0 J; B$ O5 S& t; P, L
let new 0% g/ Q  Z9 a0 B2 n
;;
暂存新的一个全局声誉
# ~* c/ P* F' ^& `/ Z! flet i 0
1 U( a* H6 E3 ?  G! |. Blet sum-money 0+ h# h* }* L8 E
let credibility-money 04 {2 u3 i( n: s' c7 I. S% T- Q7 \9 |
while [i < people]" ?! M7 T& t3 ]2 n! T. c: H
[
' E# u( A2 c0 n; |& Kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 {/ W# ^" U$ T9 G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ e# j; b. b8 _set i (i + 1)* O0 r) d; _3 x3 O' n) K7 o
]9 n0 U; `9 E# B3 W7 ^
let k 0
3 Z- Q, }4 `0 R) s2 Alet new1 0$ ]) r' D# B4 U$ L) D/ r* ^
while [k < people]( m2 D9 c& S/ j) U; ?4 u$ m$ m
[
5 Q7 k7 I# b& V9 k! I6 bset 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)
6 R: P; \- ?) t; I: o* ]. }3 sset k (k + 1)1 X" ~% S. Y( O1 ]; P$ A
]
. B2 n  ]3 [! Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, p9 I" c. W! ?* ]set global-reputation-list (replace-item j global-reputation-list new)! P3 Z, X* D4 V' ]3 I6 x
set j (j + 1)
! _$ s4 M% m/ N7 Y6 S% X" \]4 Q- V& y) ?6 n; ?8 x4 [9 \) j% Q
end1 }/ V- [7 L  Q( ]

( c6 ]* A4 ~7 ]3 H6 V& j
& P' J3 I( W7 J- E8 p9 Y
. P' @; I* D6 f9 ?8 i' r: pto get-color4 y! @4 ?. G$ _. ]

0 P. W  H) U0 l2 `+ B( z6 q( j6 Sset color blue
9 \3 X. T: j, |) h( X5 z
end  z+ d- @8 |: o9 f
) M; S1 P9 u5 V: P
to poll-class5 H* T1 i8 d" x
end6 t5 o; G2 O6 h! ~8 z4 |2 `

% ^2 a, m8 c1 V  Q( A6 l# D3 {) @to setup-plot1
& N! f$ P& K7 K+ M/ U' Z( C- Q& k# b' b! z- E* M5 f
set-current-plot "Trends-of-Local-reputation"

% A) h/ Z: A1 j# f4 n5 o+ G* M& ~5 a8 s
set-plot-x-range 0 xmax

4 E( A1 j. [0 a) r. g" `" \* _5 G, _- [: D0 [! J$ \' ?) }
set-plot-y-range 0.0 ymax
8 Y7 \' y5 S4 L9 |: p/ p+ R6 x
end
1 G) L$ B  h$ W8 o$ N& @& P( i& f
to setup-plot2  z! l$ \& P+ x$ O/ ^

0 b+ b( g2 m, l$ @set-current-plot "Trends-of-global-reputation"
* e$ C) m7 S3 P, q! Q& g
3 \( l% B8 D# p( u2 ^0 V3 j7 e: L
set-plot-x-range 0 xmax

2 H# D) W- [2 e- [5 C+ S. d- J3 I* B+ U; ~6 e( _7 R  ~
set-plot-y-range 0.0 ymax

# V9 |! T7 ^5 f/ S. Yend6 Q, X' `" ~& Y5 t6 Y7 R
5 N# j! g4 p8 ^5 V. E& j
to setup-plot3+ j( S  F3 M0 E5 T& N  J& B3 ~
8 s8 O& j; N  E# A" h4 e. H
set-current-plot "Trends-of-credibility"
$ A# V+ @4 {! g0 H: O
: e9 _# a5 o# @& Q- X3 X
set-plot-x-range 0 xmax

- @8 w8 E: {' V
" |3 c5 N. G3 v: Z. Rset-plot-y-range 0.0 ymax
! ~  B' v3 V: ~* z; N( g# T
end
0 d& w6 X/ Z/ J3 M1 b! Q! {  m5 Y
to do-plots
9 q1 k8 l! b) Nset-current-plot "Trends-of-Local-reputation"5 C0 }& r0 M; B1 {; E. i" \
set-current-plot-pen "Honest service"
$ Q. G/ V0 b1 V+ Lend5 P+ F; o5 z) M6 X
4 L0 q5 ]$ q( C" I7 p' X
[ 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 ~9 B( A2 d& Q+ m: R& f; v/ p1 H' n7 C/ o- B# S
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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