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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:  {. ]4 Z* ~1 i
to do-business
1 V+ A( l( H! b* P+ d6 `' S rt random 360
7 f0 D) s; q/ N6 W# T+ Q fd 1( ~- {. g; c4 B5 }
ifelse(other turtles-here != nobody)[, n; w: E& {1 j% _& z6 u7 Z
   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.
/ h0 ^( ^2 j2 U   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & o  a: _% Q( Y! k8 E2 _" Q: H; A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 g: ?2 Q8 S6 g# X2 i7 C2 V) |
   set [trade-record-one-len] of self length [trade-record-one] of self
( M9 E& ]" u! f   set trade-record-current( list (timer) (random money-upper-limit))
/ F3 H8 G/ ]/ W/ ?$ \0 D/ P% L. M/ r0 C6 r
问题的提示如下:
  P( a4 w: }6 \7 W3 g' S/ F* J
+ \& O& b' J5 f% j& {, werror while turtle 50 running OF in procedure DO-BUSINESS+ f% Z+ [* m. {0 u7 r# t
  called by procedure GO
2 E0 v5 `6 w% m( u. [3 pOF expected input to be a turtle agentset or turtle but got NOBODY instead.- O, q5 `% }) C; ~" C* K6 N0 X) [
(halted running of go)
/ x# V' E- U6 ^6 M/ v" L. f+ ~; t4 O; Y3 i
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~~
; H; Y+ t. K& [" U' O5 P  f, L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
/ M: \; {6 I5 A; o3 u5 }globals[) H, d- H( w( o/ Y
xmax+ M0 w5 j8 o8 N: a, v/ O4 e9 P
ymax7 @1 `3 W& g/ S- U, x& d7 {
global-reputation-list
, C6 _0 c" \/ n1 H& ?6 _: ~3 k" j  _/ g" @. a
;;
每一个turtle的全局声誉都存在此LIST6 g$ P- z- q5 C8 f7 p
credibility-list: h/ u! r" p/ G, f4 R  f8 \
;;
每一个turtle的评价可信度
9 u; C* O' v" p+ a' U2 A0 D9 Qhonest-service! Y; G, d7 d! L5 v
unhonest-service4 P( p( v6 ]1 b  N4 n2 r
oscillation: h1 T' d+ e1 Y0 h" a7 y
rand-dynamic
4 z* F  G/ K5 |: X# u. N]
2 C* a- I7 z- S/ i( Q( ]
& w2 k  K7 p: b7 Z  uturtles-own[
/ a) W  l8 g0 E$ O: G' Dtrade-record-all
% z& B' j8 w! F;;a list of lists,
trade-record-one组成  T+ k6 c9 j  H- }+ [
trade-record-one8 s! l. ?! G/ f. Z- @
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% C( Y- P' C" x0 z1 r  q
1 X4 s) |9 @) @2 ?
;;[
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]]
8 u# {9 v# |2 m% ?1 \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]: ]6 Y: t  X4 K3 P- h( I+ r
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list8 M9 \. H' B4 R; {' p0 Y
neighbor-total
! k. W! ^0 P+ U  Q" n$ c* {4 b;;
记录该turtle的邻居节点的数目
. R7 ~1 I4 s8 U* {: v$ u( F- ^  Strade-time
3 l: s& b. a$ q$ ?1 C0 {3 I;;
当前发生交易的turtle的交易时间
. j- R1 W0 r% L. D1 G. N# {appraise-give
5 O: z' f7 p' @  b;;
当前发生交易时给出的评价/ |. |6 y! B1 v4 m$ N$ ~
appraise-receive
8 Q; i; f" @7 q- z4 s* e' p;;
当前发生交易时收到的评价
: i+ V! J( q+ O2 Bappraise-time
: w0 a2 J( L. X" u# A: U1 p, ];;
当前发生交易时的评价时间
  k9 \2 Q$ B. `) @! ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉# W- \) {1 H2 v
trade-times-total
  c; O' x4 v, h8 U) J1 I5 i+ X;;
与当前turtle的交易总次数9 E; ^  x7 D) M" k: D8 d8 i
trade-money-total8 `! R* K& E6 D8 Z* i
;;
与当前turtle的交易总金额! ]# l3 e7 \( ?! e, l
local-reputation
6 d/ t, g1 K4 o" ?4 Yglobal-reputation
, C9 L/ t$ d+ f/ pcredibility! s8 B; m) v3 ^4 {' b
;;
评价可信度,每次交易后都需要更新' R- w7 f8 Y  ^
credibility-all
0 C! W  f/ M1 v8 i7 K;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
! i$ M# T  k( ?% t% l9 o& A( [- L$ h" W9 J
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.53 K' h& N& X; r2 W
credibility-one
7 Z4 K* J% K! w* B* G;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people) o1 D/ ]  @' k# S3 e2 N
global-proportion
4 E) f7 ~/ N; ?* Hcustomer6 g. \6 V. T, T9 [- L, l1 E9 v
customer-no1 f( l9 g1 W; e. n
trust-ok0 |1 p/ w% x) ?1 M( ?
trade-record-one-len;;trade-record-one的长度
2 D6 C0 _5 A* \3 O" t1 M]
2 }) t" u; H7 ^* B/ v; }6 o( n+ \) X: c6 E3 g
;;setup procedure
+ V6 R8 c: Y8 d$ P7 d# U. w+ I8 G1 X! i: T5 {
to setup: w" z4 l6 D5 v0 Y

2 _# `2 h$ W+ ?ca
! {+ j7 x2 B+ [
- I+ S8 k* o$ k! C0 x2 m
initialize-settings

& z6 M! x4 w+ c% w0 H* f0 d4 @' A5 }2 L: |+ g: b% ~$ o
crt people [setup-turtles]

0 |/ z6 p8 R' }2 i% n0 q  a2 a# X6 ]7 z+ x& |* i3 K; i
reset-timer
6 S3 p' [" w0 G7 g. B

  Z  W2 `# w) j, E% x5 S, w0 rpoll-class
1 O, l8 g: g5 m( S0 i  ]- o! t; w
4 m7 P- b; y, m: i/ \' ?, L8 c
setup-plots

2 U( R2 d6 B+ X: o9 p$ ?' T6 F( [: l& P0 M
do-plots
3 o+ G: H' K  K, q, [
end4 |: [3 t0 A; d" `

: u5 M# P6 j: I9 V$ B: {& |to initialize-settings
. G; |' K0 p/ p. \+ Z. M2 ~1 k
/ I. `% p1 u7 s9 o( b0 R0 X# R) Nset global-reputation-list []

. Q- O& _- v6 w( c( t
- |- S2 v6 n) @) K9 Q/ lset credibility-list n-values people [0.5]

5 }8 }& l4 H$ S8 |9 g, z% W8 V" n0 y9 k' J7 E, C4 P# w
set honest-service 0
$ N7 }8 b) H1 c0 A" m

/ a7 K; f1 E2 f1 e1 V* [set unhonest-service 0
9 \! d) s5 n5 ~$ X6 S( ?
3 K. F: U% ?/ V' w1 _) L
set oscillation 0

0 w+ R7 g) }4 c( y5 ^
) Y# @2 i2 h1 A) u! Oset rand-dynamic 0
1 P# M7 R" @3 ~3 o/ u0 J; s6 {, L
end
6 Q8 _- Y, I0 \6 h- p0 V/ {4 H! k! R. C7 s# g0 ~
to setup-turtles
. K. G/ e8 ^, n9 ?, {" T+ gset shape "person"
' o2 F1 o- K& h0 Wsetxy random-xcor random-ycor
0 r8 p5 x+ e) [set trade-record-one []
: A6 s  Z9 c4 m6 ?4 ~& p
5 o/ k9 T1 w7 W& h" h
set trade-record-all n-values people [(list (? + 1) 0 0)] * n3 a% U# I* [  `* [  ?3 }

( R& A" G9 j$ |7 v5 _0 z: Q1 `set trade-record-current [], D6 B6 Q8 e3 v# s9 d
set credibility-receive []
. ]0 R2 y/ Z( j6 K4 `9 pset local-reputation 0.5
+ V" R$ r" H" Q8 P. gset neighbor-total 0) B5 x# L. C( `5 ^* K
set trade-times-total 02 {$ p9 X1 k0 d/ E% Y
set trade-money-total 0
. [0 N; Y4 J# z6 I3 s+ Vset customer nobody9 A9 v' S5 U# P8 ]1 G6 ?
set credibility-all n-values people [creat-credibility]
- X# f2 U8 U7 Yset credibility n-values people [-1]
4 r! _6 q% c, s5 xget-color
! o: p4 R% q( N2 S" A3 Z- W

; ]  y3 h' ~9 Q% ]3 p* a1 Oend
- P% g' I* c/ c
  _  d0 x4 i) `8 A( q4 bto-report creat-credibility
- D& n  z  ?: f2 x# v$ Q8 `report n-values people [0.5]* b: y2 c. j  g/ M: o; x+ l
end% i. c6 G; d; u+ f# D5 |9 _# v& |

/ u/ {$ I$ y, A& Tto setup-plots
  `) J% v8 L: ^0 ~/ @$ A# Z" S' v9 U, a! S) v* c# T! m
set xmax 30
" G- P/ C9 k! A

* b0 v9 H' k. B1 qset ymax 1.0

$ r# U4 q. N. ^( Z# d8 S
: `! c, H" z3 ~; Bclear-all-plots

: S) u) X6 w, x0 u; d
3 ?$ N' t: `2 ?* c) `6 `: asetup-plot1

0 A6 B1 f5 t* M: D
$ @$ b- Z" Y, }+ K7 Fsetup-plot2
* h# Q7 E8 b5 w+ h

6 J- C5 i2 c* M! o! u$ Zsetup-plot3
1 Y' i( s0 j7 W5 i$ |8 V
end, K3 B3 G9 f6 C( F' n. q6 l9 a

, q, y: r1 C: a* k;;run time procedures
; s8 Y5 O; M) T1 \
. t$ U+ q, Q6 A5 i; q/ Nto go
; r: a0 P0 n5 W1 l/ I, [0 v$ j$ W, ]  a# [' u
ask turtles [do-business]
( @; T5 _* Y4 _
end
7 t; X& i# E' d5 g/ c3 R6 y+ j
, p2 K) Z# c' vto do-business
$ o' M5 s% N! J9 z  ~
8 u/ T" D& `$ L1 V  d
7 Q' a! I3 m( P% [# O& Z( }
rt random 360
5 R) T, K9 U* q: b" L$ [  ^. `2 D

" C" j/ a# Y: Y' v' G4 ^; E7 F" Pfd 1

+ j/ S- C; B! O- W
9 m! R) {! u2 A( T! E, _ifelse(other turtles-here != nobody)[
5 `9 {+ X# b. A  a- R; W5 L0 h
0 g7 v+ Y7 J1 c$ }$ u9 E
set customer one-of other turtles-here
0 m; U9 g; H! w1 R) }2 M- V
' C3 y% n4 y7 S- j( d9 h' [
;; set [customer] of customer myself

: o6 O. a3 W* B' n/ S2 Q6 T: B' M5 f
set [trade-record-one] of self item (([who] of customer) - 1)9 ~5 L5 r, B. [4 j% a# [& x
[trade-record-all]of self) T/ Q2 v2 a# S. m7 b, r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# u* I) u" ?( Q& f2 O- f0 E& ^% n

) u! c5 C( W5 M- ~set [trade-record-one] of customer item (([who] of self) - 1)
, L- ^: [" \& [9 m6 p[trade-record-all]of customer

' U0 C  [: ^3 A8 J
# \9 ]& @% S, r$ N7 b! uset [trade-record-one-len] of self length [trade-record-one] of self
6 A- }! V7 |1 O+ v. N
7 S- Q9 b9 r; f5 e- p+ o* l
set trade-record-current( list (timer) (random money-upper-limit))

2 j4 U$ f8 B" P# n  @; R. N! C' C" g: n
ask self [do-trust]+ P# w/ M1 m7 @% X  Y6 R; p
;;
先求ij的信任度' A, L% g; b5 m$ Q; d

+ s7 C  k9 l0 \+ F2 hif ([trust-ok] of self)3 [( I" m8 a8 t8 y
;;
根据ij的信任度来决定是否与j进行交易[; \: p# v8 }2 [! J& i4 _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ L1 D8 R2 t. F7 N, D) w
$ g* h* F8 ~/ ?8 [& Z! E  I
[
* o* ]# W; B6 }1 j) J

5 s- I2 O8 p" C- ]; }# S0 sdo-trade
+ V9 n0 ?  d1 v* Q( t
, G6 A% O. W1 j  F5 I
update-credibility-ijl
+ u5 k4 q0 ]- E! a; z: d
& z3 j2 S0 A6 E% n& s
update-credibility-list
3 ]( a$ k5 z0 s0 q  F
" \1 C) v3 W- a' L1 c: Q
' j- ?$ ?4 g$ N7 c
update-global-reputation-list

: t+ R% u5 h& L' ~: y
$ V- R( u- F: u: S! C# r& u2 Gpoll-class

% o/ e2 `( I- P5 Z3 _
$ s! n' t. ]" L; P) v/ ]get-color

* F1 a8 K: q$ p, K* J
1 E2 K/ _. F+ d! T+ L2 Y5 {]]/ q+ I2 n' |7 k2 U

2 X! h! s  n0 w. b;;
如果所得的信任度满足条件,则进行交易' B. x! V* K) E$ |

1 Q( q) p5 o2 F1 P% t: k, m8 M[
! e; Q2 [; q! Q

; I: [7 q4 u1 L5 ^4 s* [, Mrt random 360

6 T$ l' k+ x, U5 L+ k1 f
) ?  }4 N% j( h: |fd 1

; X! m: J3 Q' t& d- ~1 X
6 H3 W- Z/ K0 i+ N! Y3 I- `]

1 J+ x1 P3 Y$ X" K! W( J
$ {' Q) r8 l% U' ^- N- Y( Iend

: }0 j4 D! k5 o. c8 V
  d2 O$ s5 g- sto do-trust
% F  M4 I. }! O7 U2 U; e/ Nset trust-ok False
0 n, o, |# L6 B0 }& B
, H! l# F! m/ M5 R  @7 x
/ c* d; k" G3 y
let max-trade-times 0% X0 U6 X+ k* E6 c% P  P
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' E& O$ r% h! F6 b3 E7 p. q% N+ \$ v
let max-trade-money 0
/ ?0 l& H; O: |. t4 n5 A& Mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 E) s0 a7 u' m; Z' 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))
3 X8 j; r9 g8 e% Y5 ^9 o3 L
! Y; l! A* \1 P
5 l8 t2 b2 D. B2 T
get-global-proportion3 c) K, _; Q3 u3 U, S3 F9 \4 ]  G
let trust-value
4 [6 M5 g  T  C7 Ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

% b$ {, l% g! dif(trust-value > trade-trust-value)
0 u7 S! U) s( L3 L9 C$ T) U[set trust-ok true], E( e4 a( x8 q2 t. F* E- _" D
end
6 y  _; ?7 M$ t
0 Z5 f- N) M" w" yto get-global-proportion
5 ]2 q: C; e1 ^4 Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 u+ F& l! A' z: v4 X' R9 y0 _3 q[set global-proportion 0]/ F0 k$ `; K- E$ w4 P9 X
[let i 07 f- s9 W! O9 R
let sum-money 0
* V' {5 g$ ~/ M: X- }- [2 y# e+ S, awhile[ i < people]
0 x7 d7 V0 r: U+ J# `. [6 x[
: n# F& D: d# c+ v7 ]" `1 E, {2 yif( length (item i% Y  {' X; v+ Z" e5 ]4 \
[trade-record-all] of customer) > 3 )

3 R; Y" a1 o; B* J: M; Y1 E7 _) E[
  A9 F  Y) }+ k3 t$ Gset sum-money (sum-money + item 2(item i [trade-record-all] of myself))* _9 s+ z" }1 ]: |) J2 I
]4 Z( H$ P% C$ R. e& _
]
- R; h3 i9 q  S- J: A! Blet j 0* i1 F( K8 P' ^
let note 0( K& r" n8 a+ O, Z; v3 u
while[ j < people]
  O% n- b5 P3 ^( f. T: A. I4 o; j[
# O6 w( H- _+ ?: l; _& N* F9 ^if( length (item i# n) P/ e2 u0 Y9 ^% j) o
[trade-record-all] of customer) > 3 )

% h4 K( m. @7 W( a, W& K. D8 V[
1 a) C2 K$ ~9 s! @5 y2 q: Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); H. h; g/ S( z7 j. k
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# Y$ g8 R% N) [: o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 N5 U! I( s- U]9 L, S$ @' E( p* {' b5 W+ L7 s! c
]6 u. w. o3 t1 M0 a0 Y; P
set global-proportion note
- @+ T+ g5 d' f# F$ n3 v; M& T+ f+ T, q]8 O8 v  ?. O$ N$ U. q" U8 z
end1 f3 B; ]$ D  t4 l/ w, b1 Q

) x' u) J/ P# a8 m" d3 t. qto do-trade
1 W8 j3 O  _2 O/ C) o;;
这个过程实际上是给双方作出评价的过程6 a+ o7 c7 L4 j* Q/ `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 m) O$ y2 g+ X, @) R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) h& u) ]8 w: F, a) Fset trade-record-current lput(timer) trade-record-current
, V& k* G, l9 m. x;;
评价时间! R2 j6 h: T7 c% B
ask myself [; M1 D; B8 r( R: o
update-local-reputation
! {1 h" [  Y* `set trade-record-current lput([local-reputation] of myself) trade-record-current1 U3 K  x9 U4 B9 I( J! s
]) h% D* Z9 Q6 H# @* R. k
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ Y  l9 _4 W' L" {;;
将此次交易的记录加入到trade-record-one" \) B+ I- O2 V& `2 m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 V3 X$ g/ F/ w7 wlet note (item 2 trade-record-current )
( X5 R' V  L; K0 ], ]set trade-record-current6 i! {- Y5 D' h8 Z2 s: d4 R
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 k1 D0 u7 o/ _; l' L
set trade-record-current2 P/ c( E. W% N9 C! F
(replace-item 3 trade-record-current note)
- v: D+ G6 z% `+ b1 D. B) J
* w2 x# ?. H; `- V4 H7 v- y6 z

; @7 H1 M$ [1 B7 d+ }) J) i! @ask customer [3 l% u$ n0 j- j0 r9 e7 R" Q
update-local-reputation; |7 T8 h# b( d0 }% O
set trade-record-current* H! V8 s8 V- a; d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ b, L0 M+ ^7 d- k" t- p, X]5 M7 t5 P2 y4 }0 O% Z

: y, a2 ^, U  p; w
; b3 v# |/ j+ t* I$ j
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! D1 x! P& t+ K1 T
* o2 l, O7 o8 r- g3 E- U
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 m) A9 n! C( Z$ F% `9 a$ _;;
将此次交易的记录加入到customertrade-record-all
* s' P4 x9 `% |# v( Fend7 ~+ x" _3 s; d$ z% O

" S1 ~% ?4 b' C) i; k7 T6 g4 Bto update-local-reputation
' e2 V# [2 R# c" B5 K) r6 hset [trade-record-one-len] of myself length [trade-record-one] of myself
* v! E) D, h$ O" S
+ ?1 D" |; D+ f) S! @, p' T0 T5 z  {6 H+ O
;;if [trade-record-one-len] of myself > 3

8 T: p- ~" z, R# M( Eupdate-neighbor-total5 ]+ e) A! m% |
;;
更新邻居节点的数目,在此进行
2 x% E9 z/ B: D8 j7 ^8 `( m2 h  R- |' w5 blet i 3+ J% g; ~: j' z* ^9 J' ]& }# B
let sum-time 0. C. q0 [$ v; O4 W. |+ j/ q1 b3 E3 o
while[i < [trade-record-one-len] of myself]
: g& o/ N9 l) O4 y[
% y9 F! l# a5 D+ ~9 W' ~set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 k2 q/ R- O5 r/ ]" J( o- I5 oset i) S$ E6 ?6 N; V8 m" h
( i + 1)

! M$ [( G9 ?$ O% i]' X! _5 d6 \3 C/ E  F$ a* l: v, E
let j 3" W5 X; x" L: F7 g
let sum-money 03 @3 T+ B' l" i  z, H; R% {
while[j < [trade-record-one-len] of myself]2 j" g6 d( `9 F% x7 \
[" h* S' A3 e- @. `" R/ B% i: v& P
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)# H9 m6 ^( b: M$ e# K
set j4 ]3 g2 }: b  G2 b4 J- q
( j + 1)
# n8 ^- y7 o" p4 O4 `
]7 O) H- W; V- J4 t" g6 n
let k 3, i/ @4 t5 h  b$ e8 H
let power 0
5 P1 z& c1 q% w% W/ Blet local 0
! j7 {) t2 m: s+ X) I! Iwhile [k <[trade-record-one-len] of myself]
7 A8 l( Z; D5 a  k[5 q6 h+ h! c5 b) ?1 [& {" V
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) ( `/ C3 ~6 j" N4 T7 @5 y# e
set k (k + 1), N+ s; L# r' ^" |7 i
]+ p7 K( H* Y' Z6 G. e  N
set [local-reputation] of myself (local)
: l& \; a- d$ S- h6 Send
" J/ h  c' H: l2 f3 y4 C; q' q
# J9 y9 i9 }- W9 f0 a' ?to update-neighbor-total% P8 p/ i' m; [+ B# E2 }* c, B, z
+ M' b* a, x) W0 F, d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ c8 V( \9 `$ b- I* f, U7 f# Z2 }+ W
/ J0 Q0 E! I. @% }9 C3 ?
end
4 y( H  j% p5 C+ O: x* \% X
6 g' h! j% X8 Z) Dto update-credibility-ijl 1 D6 _& Y; ~1 U1 D5 m
) X7 j' K' @- Y' V& j3 L- R2 i
;;
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。
/ l! P. m; _1 A, h" H- Z0 Y5 P0 Q6 ilet l 0  c; u$ ^3 V5 V7 K; p' ?2 F
while[ l < people ]2 V3 B% ]( O* x& N* R$ T0 Q
;;
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6 J3 i- l! O0 U. Y6 _/ \- b
[
( T+ C4 T8 q5 Y# e3 vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 ^. W! _. ^& c8 G) kif (trade-record-one-j-l-len > 3)
2 L- ^. c3 C1 F7 `4 L[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
  A9 C8 S9 |& R8 blet i 38 K! ^* U- `2 U% T
let sum-time 0% ?$ n2 S8 k/ E
while[i < trade-record-one-len]
3 G6 N+ Q6 U( ][" J* O! b: Y0 Z1 K2 e+ B; y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# e6 l: [4 h0 m6 q5 l
set i
# q  a& e, z8 H# [$ w( i + 1)

3 N5 ]9 P. G+ x( q; g# h]8 T4 ]8 E( w6 B2 n
let credibility-i-j-l 0
9 o" I) Z1 [( R7 e0 n- o! q1 Q) H: T8 |;;i
评价(jjl的评价); P5 n9 a: \8 d' E1 l2 n
let j 3. @& {2 S8 s, e' F. ^& U
let k 4
: J. g5 i& z  i4 y* [while[j < trade-record-one-len]( ~; A# m4 Q  ]6 }
[
; a* H6 @. |$ ~8 awhile [((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& T' F: d  {" w( @# X% {7 J( X0 Z
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)+ W/ x7 q: l0 Z  g4 s. T
set j, e: {. m; H) o3 g: e
( j + 1)

0 m  T, h6 W$ v- K9 R]
1 Z7 ^) J0 j9 d. p5 Lset [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 P5 m" u* u+ C  G. a7 D
' l2 R- S- ^! j

" P8 j$ |  @7 }let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 V7 U+ J% {+ {. d% U( r;;
及时更新il的评价质量的评价2 G6 Y4 S# T6 N, k& w0 o% i1 i% c- t# Y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: k6 Q2 @6 F9 u, m
set l (l + 1)
1 |5 ?0 H/ R& u]
9 ?8 J; }8 u+ a) F4 B8 M/ ?end% H6 s8 X" |7 p0 e* R; i5 {. x

6 m; ]  v3 R) rto update-credibility-list6 d7 T* j" h! {3 W
let i 0
* R% j; _! F# [6 Bwhile[i < people]: ?* s4 n  A7 B0 V  [; B0 ^
[6 C% a- {2 }/ m# B
let j 0; W7 H& G6 @2 q* x0 o' j0 O1 R
let note 0& |( u1 M8 d' y$ m: B+ z" N
let k 0
- X5 E& F7 C' `' l! V/ f# F' Y;;
计作出过评价的邻居节点的数目
$ I3 o8 L" p4 k) f0 Wwhile[j < people]4 {: _, q: S/ u9 G
[
# l# z1 _6 h' a) z- j6 n3 A" rif (item j( [credibility] of turtle (i + 1)) != -1)% q5 f4 [, f) i* k" F& i
;;
判断是否给本turtle的评价质量做出过评价的节点$ S7 @1 F% _+ e: j2 Y1 A
[set note (note + item j ([credibility]of turtle (i + 1)))
' l/ b* [! o9 g' B7 T  H- h* H;;*(exp (-(people - 2)))/(people - 2))]

7 v7 W: ~. `" p, W! i( J4 Oset k (k + 1); j+ ]: Y3 R% f
]
: @1 T4 C0 _: p& ]3 O0 h" m" y* Gset j (j + 1)( S" k% A" z6 E* v, X8 l6 b- u9 D; y
]
! M" b' \% a2 ]6 T$ B1 M5 I7 jset note (note *(exp (- (1 / k)))/ k)
: y8 C+ ~: z4 q) E0 i  ?& Yset credibility-list (replace-item i credibility-list note)9 B& p1 i8 v0 q3 Y$ ~
set i (i + 1)
) m( J, u$ u' P]& o4 P; I" c, p5 ^
end8 q( W3 O* Z. a5 N3 b' u3 }' }

0 k4 H9 v& M2 {  Zto update-global-reputation-list
/ C- m4 ]8 U' Q% klet j 0, g$ w8 f/ S1 _& a- [
while[j < people]
: i% l  z) \5 T& R[
7 j# b# y% `1 Slet new 0
! K6 J& M1 g% l- P) m;;
暂存新的一个全局声誉
; [8 d, v. B6 G: e* N5 x' [( `let i 0* c  i' J% O+ N  Q: K6 r: a
let sum-money 0
4 Q  `( S5 l+ W+ u4 v5 I6 ?let credibility-money 03 w: j2 X& J7 d8 q
while [i < people]
, H6 E$ h. C% a8 z[# r$ ?1 w$ ^. t, t7 b% I
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 H' w( B* J; n( q# f4 e, dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" K4 O( q- V% f7 a6 D5 R& C/ Jset i (i + 1)
$ R1 [0 [) c+ }% [  A], M& ]* Z+ A$ w2 v' E, m+ \
let k 0  [1 a* y( g: M* t# ]: Z  f! u4 y6 C. `
let new1 0
+ O1 C8 J$ F1 h/ T8 j* xwhile [k < people]
/ \4 }) a1 w$ u5 y  t[
1 X! S1 `+ {. R* z! _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)  p1 ^. |1 ~. R
set k (k + 1)
+ }& h& w* @1 v5 W  X6 u9 }]( m* H# {$ c% i+ [4 \: n
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 X/ F4 K: R9 \# F9 b7 k( Fset global-reputation-list (replace-item j global-reputation-list new)3 d( J% |. F5 q$ n# s8 s9 A
set j (j + 1)
4 G0 s* U1 r4 [5 i, L8 s9 X3 o]
* u7 K2 W# {4 A1 kend& K/ C0 ^5 T: c+ Y! o) u# }( [

) }! z% E9 o: Z5 x4 y, b" ?$ o# l
* ^& |: r) _& P+ a# F5 c# y9 \0 }' z& [, _  w5 ~0 G
to get-color
6 K* [4 `* g2 x- J4 G, O* I6 Z7 P' E5 K# A" V, M1 K0 ~
set color blue

! B! u3 J) f( y' cend
4 F7 s0 G+ R- Q; R  |2 m; t4 [. J5 g% u0 {$ l
to poll-class
. t- e$ I& G, U8 w  E$ _( fend
7 |: S# C# @7 l; r
+ R; b! H% y( M: {6 nto setup-plot16 t/ \+ O8 Y9 c6 H2 u1 R
$ N8 @7 Q1 i$ z* h
set-current-plot "Trends-of-Local-reputation"
/ `: z7 @, P2 w! t$ e7 j) X

: k/ d  c: @6 Rset-plot-x-range 0 xmax

2 g* X" Z* r! u5 ?; x
& U- h) B$ b0 H5 P1 s9 D; g0 X9 j! j" Fset-plot-y-range 0.0 ymax

% b0 n) Y& J" y1 z: Wend0 K* L# K7 y& H; K. f

: D8 `7 e5 U4 ~+ Rto setup-plot2
( C* [1 `; x% ^' V; n' k4 k0 b8 k3 S* T8 u  `; H+ E: z
set-current-plot "Trends-of-global-reputation"

$ Y# W# x' R5 A! ?3 y
$ ~( c$ E3 I7 |% H6 P4 gset-plot-x-range 0 xmax

0 K; _+ o0 j: ^/ a6 B, L/ d# U; l, N" U! K0 ~: X; \, s  D6 g! e1 l
set-plot-y-range 0.0 ymax

* \7 B  X% ^1 J) E" h$ D2 r/ cend
& p1 b5 V& M: l0 x, O0 q5 C, e
! t: ?* w. ]3 V$ Sto setup-plot3# k$ J: E# n5 T4 r+ ?, X
3 H2 _' Q$ t% e8 M, H; s( E' E
set-current-plot "Trends-of-credibility"
( `( B5 t/ [8 A9 F
& f8 c# ]( e/ Q  i
set-plot-x-range 0 xmax
( L6 m  |( x& l( ~+ Z+ f

4 P" A. _5 O2 ]# S: k' l0 S9 ]set-plot-y-range 0.0 ymax

8 A. x9 i3 ~- l' u. e) Z$ fend
; y& q4 k  u8 x; P! T. W
8 `6 `4 @+ U+ W% H- @to do-plots
& C/ A  E0 R+ w1 K  jset-current-plot "Trends-of-Local-reputation"
' ^. ]" z8 t8 X8 d- w' [- L0 _set-current-plot-pen "Honest service"! r2 Q# D& B# A/ u* G/ g# Y
end
2 i0 \: @, ]( g, b9 M- f: v# s- ^1 s# l9 {$ I
[ 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.; I1 d, {& @" P4 H, k1 j- ?
- s+ ?4 y1 j# l& \. z  V
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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