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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:
7 _4 P+ @/ n3 _2 m7 @9 H; a/ sto do-business
$ l# o0 p; u( j% ?! S4 U$ e rt random 3606 k' Q, r, l! h4 U7 w
fd 1, W: Y: M; @" ?7 ~
ifelse(other turtles-here != nobody)[
; W) W: l) F0 i( i1 n# g   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.: A4 L) g6 x' P7 ^5 K
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* l6 |, [/ y3 w1 A* U6 Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- T1 N' s5 w# _; h9 A* l! \   set [trade-record-one-len] of self length [trade-record-one] of self
5 p  P, N  A/ p" [6 A# ?   set trade-record-current( list (timer) (random money-upper-limit))7 i, P2 n8 f2 l  g! a
, Z) A7 g; c7 q$ _! R, a( e! P
问题的提示如下:
' b7 f7 K, ?. J5 z9 q
# ]$ n$ }8 o9 Y: O& g; berror while turtle 50 running OF in procedure DO-BUSINESS, _' R  F6 _5 N$ X) ?
  called by procedure GO3 }2 c4 o$ }/ A4 Y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 u" N$ l) I9 y! N8 ~
(halted running of go)
& F3 p, K" {, x; ?
. \: D) `0 P) u5 s3 l! ?% W! @4 s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~~
0 k: k6 [5 f9 C; u: `5 y9 J6 {! M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
/ F. C1 [+ W' d: Q: p, j1 D) G8 Kglobals[8 C( j2 ^4 f% S8 h
xmax
- f3 J% d1 r- P# j8 D8 Tymax
+ }2 }$ f! i" T& x/ e- aglobal-reputation-list1 L) r; x3 M4 x2 i* _* l
4 N! P+ Q/ `* X+ |5 X- ^
;;
每一个turtle的全局声誉都存在此LIST
* ]1 a5 N/ U( \; q4 m3 h9 qcredibility-list
; d" j, C" s, f; t$ g;;
每一个turtle的评价可信度
9 z* f% ]# B: [( y; ^' r: z+ u0 thonest-service/ E! c, H2 D: T7 @/ l
unhonest-service' n" a: F) q0 P5 f
oscillation( q* x% `! I6 B% o4 O
rand-dynamic
9 j2 J* w  L' e$ R]
/ a% F3 ]( s' @/ X+ |- x. {; p- Q
9 Q( [: r* `, a+ s! H( T. Hturtles-own[
4 V/ S9 r; h2 p( W! ltrade-record-all" B+ \( H( u+ y( o
;;a list of lists,
trade-record-one组成0 G* C9 ~- `0 F' I2 Z
trade-record-one
0 d3 v$ i! w) g/ F( l;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! O. m4 r# k6 {3 a( u5 B, z
! I) Z5 Z! y$ R3 R; d;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
& j% J8 B4 w1 \6 w1 ztrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
% S' U3 f2 G! y; F9 _! o( i' n& W# p2 J1 Xcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
& |, _; S: s, L, g' e3 Zneighbor-total' Y2 r5 N+ Y0 P8 O+ E- @$ B" c" }. T* i3 D
;;
记录该turtle的邻居节点的数目
1 y+ P' u/ S0 L: @: W/ gtrade-time
7 x  T' A- P8 w. l: [, _( |& J- u;;
当前发生交易的turtle的交易时间
" R' H0 F8 y5 P8 k  Q/ X; B& {appraise-give
, |! Z6 x) E& B: o$ O% K;;
当前发生交易时给出的评价
0 D9 |$ @' I' ?; \) v/ ~2 ^appraise-receive; `) |" |  d* s3 b" v* L) q4 B
;;
当前发生交易时收到的评价
: e2 q: N9 k  iappraise-time  l3 l8 t0 g9 i8 H
;;
当前发生交易时的评价时间
% H" E$ z) `6 t! z6 tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉! V6 O7 S9 ~/ [2 }9 ?4 P2 s
trade-times-total. \2 M' ~- Z# A; g) D8 C
;;
与当前turtle的交易总次数3 O6 M/ _# F& U: L! f
trade-money-total
2 k, N0 M( P+ f;;
与当前turtle的交易总金额
# ]$ d, [; o- A. ]; D$ p/ y) b$ e$ n) Qlocal-reputation+ a6 t. ?7 l: l% n4 R) V) T
global-reputation5 H- t: b) W" \  r
credibility% T1 V( N9 b* p0 G7 w. b" _
;;
评价可信度,每次交易后都需要更新
- K, R( l( d7 a6 P5 S: tcredibility-all; K! t3 t8 ]0 g7 K; Y( Z
;;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
! e! ~/ C6 o) y9 _" B, p: D6 ^7 v8 k; R( }
;;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
4 G  J+ _7 `: h- Q+ J: {& Y* s% ecredibility-one& O$ j) Z* O; g; Y3 J
;;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
  [* w; \, D" }* A  Y7 Dglobal-proportion
0 E, }$ F/ E, {; ~1 u! rcustomer# k+ p: W6 W; x0 S$ U) H4 S
customer-no3 P: C% c5 ]$ V& c  [1 g
trust-ok* u- P9 ^4 X" q+ F
trade-record-one-len;;trade-record-one的长度& n( \- O- B2 q: R" }8 S
], A7 W+ w- [' ^$ M, z* q

: ~, n* R2 K& u2 e) w* l/ ~+ P1 G( ];;setup procedure( D7 l/ g8 N# g7 Z5 H5 t
- V9 Z0 k% ~3 _# [8 K
to setup
4 m4 z. D4 F3 z0 w4 W  ~
/ z5 {5 z2 `. `, L! Pca
# p) [' q0 G! k# X
6 P2 G5 `( w5 N/ s) g* s
initialize-settings
8 ^+ x" L( K5 O+ C4 s( S' t
6 U6 z: q& u+ P* v% K  B# v4 S
crt people [setup-turtles]
& P  b1 D! `2 \, x

5 k: j* X! S" h3 v( y, ereset-timer

0 r3 U4 p; T1 Y* i7 {+ k" C
5 a6 u2 I6 U% W  P4 zpoll-class

9 W+ E+ G% \" q$ L5 ^
) ~3 M4 F1 C6 Lsetup-plots
2 P4 t/ `8 \! W
+ @; k, K% k7 m: H* z6 ?6 v9 q+ T
do-plots
3 I  d1 e* ?5 \3 g
end6 [2 J8 U8 T$ a* _" {9 r
9 D# C6 ?9 v3 S1 ?3 [
to initialize-settings
) s9 h" K& [( T( p8 j, w' `5 O: Q, p+ X# {
set global-reputation-list []
- [) s  D: ~2 o- @
* D' \; w* H8 L0 A/ @, d3 _( [( N: D
set credibility-list n-values people [0.5]

; h$ ?6 D' \* L3 {) O+ D- r2 @7 i& y+ R
set honest-service 0

$ I9 g) v1 A2 ~: `! S3 G
9 A; U# i+ i3 J7 Nset unhonest-service 0

) Z. R2 Q6 K$ W* l. j( F$ P0 }; y6 G( t" i
set oscillation 0
# {2 y7 u9 X) T8 f4 s3 J( F

, [3 ^; q7 Q" Dset rand-dynamic 0

' W, r* R7 I, @5 [end
2 x) z+ v$ z1 Z0 P: o! k/ m
$ N) \8 d. g/ ?5 nto setup-turtles . c8 D/ B- G% q2 H% A* @
set shape "person"8 e3 [; x. Y5 I0 G6 F8 i; v2 X; w+ M
setxy random-xcor random-ycor
) g" s* ^7 O, Y8 U$ `( l6 @4 Cset trade-record-one []# i: I  R+ I- R  l3 w) t' S

! w2 m# e9 A4 P1 r" M$ w6 b. \set trade-record-all n-values people [(list (? + 1) 0 0)] 8 `8 H9 a0 G1 C4 o4 o5 a' n7 V2 M

; y: m/ O1 i7 M4 g5 V: H- g5 p3 B0 lset trade-record-current []3 W: p+ g. y, n. y
set credibility-receive []/ G- |# N! G" f( B6 o
set local-reputation 0.5
2 T2 U5 u' c1 K8 fset neighbor-total 0
( r6 N; u" v4 g& ?& d6 h2 p9 `0 p9 gset trade-times-total 0& _: v- ~7 ^* U. _4 _* V, ^
set trade-money-total 0# F) i' d4 [: R0 U+ N
set customer nobody3 v6 x! s3 u5 c9 z  y; n
set credibility-all n-values people [creat-credibility]: w, O7 z/ Q2 a* K# n4 D
set credibility n-values people [-1]
# P. `0 F3 d+ I* F9 ?; q" Gget-color
+ D- T& ~! z. f7 t4 W. ~1 C  S

( d. `/ N. A* _" ^5 Y; qend3 [( i/ A0 w7 ^! Q

+ o. I2 a; j4 d. e0 Dto-report creat-credibility
, q0 y$ k9 w3 m* Z7 @report n-values people [0.5]
; b) Z; @, A0 x) U: D* Eend' A4 F# O# ^) S0 d7 }  G

0 U. L8 Z* V& Lto setup-plots
8 M9 `* x1 ~2 o- |; z) F, x0 z" C0 p0 I* T* f
set xmax 30
/ w: y. j4 Y" G; |
! [; L. d9 f. J) [' ^) ?5 Z5 H: c
set ymax 1.0
0 J$ a+ L; l& H  Z% h

! K. |* J1 c3 W% Z, M7 P4 q8 Sclear-all-plots

2 o1 M, ^" e9 y% L  P' {; z- ~8 y  c6 h- D
setup-plot1
4 S, L" h0 D3 S( y# [
$ h) J' b5 `" B" l
setup-plot2
! {7 j0 u; H. Z" x( C2 d; v

0 ]% @/ R) q5 A6 Gsetup-plot3

! Z8 x* G8 Y- s- qend
  \: M/ W- X$ G, J6 z, _  A
! `4 {5 S( ?1 Z9 C- D;;run time procedures  E) ^0 h: E/ n0 q* N0 {) {7 d; C
; n) G4 X% n2 P$ f! j' p
to go% I& s+ [- l- g2 P0 Z! e# }

# H8 {- _, x- s6 ]( Wask turtles [do-business]
6 Z4 w8 e" @# P. m# ^. L
end
6 }2 a* {2 I0 }. u+ {" C5 Y% m- c0 f, t9 u! i
to do-business
5 ^$ Z3 t2 E" S
6 K+ }+ C( Y4 P8 x
* f( w" s! z% ^* Y; b" M+ K0 p
rt random 360

$ O  K5 G+ V# k, a/ i5 C: \* b( N3 o
fd 1
! k' F! [; M8 n6 z

  z: Q4 J' y! }2 b& @2 qifelse(other turtles-here != nobody)[
+ d- R* \5 H* ?+ T( I- J( [
# {! h! b+ Q! e* K
set customer one-of other turtles-here
% \  O( ~3 O& h4 K3 [" t
7 s0 Y8 ?% R0 T8 }6 l
;; set [customer] of customer myself

' k) `' j4 Z# V$ y$ H' ?+ s. C+ t8 a5 j: r
set [trade-record-one] of self item (([who] of customer) - 1)) }) B5 V- p/ U5 M" O
[trade-record-all]of self
5 p; @4 f; i" L7 M/ Y$ l5 `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 `) D# [4 j7 }" x# m+ k8 `
4 U. p( k4 R5 T* n0 |
set [trade-record-one] of customer item (([who] of self) - 1)
2 Y6 V  Y/ S$ I* Y$ Z3 A[trade-record-all]of customer

4 E, C( c0 j9 Z# z1 u! o, D8 T0 O4 T* t+ f: V% k/ K
set [trade-record-one-len] of self length [trade-record-one] of self

3 y: H" V! D; ^' L% [4 t1 n8 w$ i6 }; K* m2 N0 g, j
set trade-record-current( list (timer) (random money-upper-limit))

2 P6 V8 b7 V$ ]9 B% V6 Y) t) ^( h, t
ask self [do-trust]
- m* |5 u7 y9 y" g% ^;;
先求ij的信任度
) U" O- F. n5 E' {( z5 S# A; s$ R0 s/ a; l. q7 D
if ([trust-ok] of self)( z: e' T6 J$ ]. u( H; y
;;
根据ij的信任度来决定是否与j进行交易[
3 N2 `% @+ ^. s1 g$ z  }8 Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# {1 I; C# Y) Z) s, F% }" [8 d
! ~! G3 C6 [( d  V' z
[
* `& K/ [5 l5 Y6 z

' y3 A& _+ Z2 m. s/ Z4 X! kdo-trade
8 s. s4 I+ P; c, k( n! K5 C

0 y, e  T9 t7 p6 Q- f" `3 yupdate-credibility-ijl
0 V0 J0 U9 t: C
: y8 T6 n# V4 [; @" I1 m3 L
update-credibility-list4 |; t+ @$ U+ L' B

- W$ x% ]0 i/ d9 f$ U& o7 V6 ^+ k! b" g
update-global-reputation-list
3 v0 q" O, K$ C% x) f

' {; @9 B9 Q7 D- a, H, n- Mpoll-class

  J* i3 p7 n# D# n$ w
" l0 `* q- d. X0 L8 [# lget-color

4 S# I, M6 I% t6 ]$ t2 S
  P. ?4 z  t/ i4 f0 _. c4 |6 n]]
+ h* z7 J* d$ q( c! P. o9 @/ g! c$ d" Z; L( G) O  g
;;
如果所得的信任度满足条件,则进行交易! n: V5 x+ [# L; Y4 r
3 J  Q( m: C$ i
[

  z6 z! s8 t7 F0 B1 ]; u: p
  w# h; ^/ i$ T( v; B, C) Srt random 360

. ?6 y: N; q9 _8 F2 \7 |  g! `* b* J2 Q9 Q% Z4 c( u0 V/ f1 y  V* b
fd 1

! {& c" x! C$ r9 Y; J- Z' Z) K) o( s2 q1 z/ l8 ~- x8 J6 E' Z7 J
]

  `: p5 f. E! W; c1 I+ E, J7 M4 Z0 h/ x. U% G
end
: J/ N1 N+ y/ O4 @3 d
! t0 g2 W  m. P- u. C6 ?
to do-trust ' ~3 I- K* U, {4 R; @
set trust-ok False4 K6 a; p7 I3 F- o# R
( w  |8 y2 s" G* @. t9 |

! ~1 u, E* p! \3 t/ x' J. K4 Flet max-trade-times 0, \+ _, B9 r! \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. [+ f+ ?0 |5 e# l: E+ D
let max-trade-money 0" v9 f3 C* Z* S1 a2 p  Q+ q4 z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 V, |* J, `  z" Y  p% r5 I9 f: `# u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); z6 B7 G* S' t+ r; O7 f

* x0 p6 l! I7 L7 [6 |4 C! j, r7 F
3 _: |3 M7 N, @) z$ h( `' S
get-global-proportion: a8 L- n% K" N4 S/ E
let trust-value5 ~$ h4 `$ v) I% f' d+ p6 y
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)

$ Z+ e; u* o# Tif(trust-value > trade-trust-value)# ^: S+ s7 Y: S2 C% ^
[set trust-ok true]# m1 G2 `& y) ~3 A' k" X7 M- \
end3 f; k/ I6 K1 b# m* [+ F' `7 [
- N% b- e# R' P$ T; l9 m1 p8 u( C
to get-global-proportion7 V0 x( L0 x. [* j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* s4 Z/ m  k- ?4 D7 H; ~; }[set global-proportion 0]
& r' w3 s" Z5 J; Y/ W( b! y[let i 0
! Y/ h7 ~, W: S3 G/ ilet sum-money 08 c3 P: R. V7 ?6 J. \
while[ i < people]
& o7 Y. K& }3 E[
9 c, V  N, o8 {9 Zif( length (item i' K. r' L2 _0 x' w) Y! o
[trade-record-all] of customer) > 3 )
! E8 `" U, A% t4 }2 D. n
[
. n6 I4 a1 {9 D( g' U- F, Vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 c, ~8 r$ y3 j+ T) D2 M1 J" Q# w2 z]
2 D8 _6 _& K- p' W" z4 v& W" G]
. c9 [, b  E+ L7 b" n$ ilet j 0( r) f- a; G' ^3 [# T$ [( S9 |
let note 0  w8 V) i7 A8 u6 w9 l9 a8 X
while[ j < people]3 g  s5 A9 y/ w. r8 d
[
/ y/ Z/ `0 Z7 W# n9 [! {if( length (item i
% @6 c8 z& v5 S2 I9 V! I[trade-record-all] of customer) > 3 )

3 r" B0 _" E9 E: P+ i' I[" y  X8 H. V& @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), b' h& p2 b: k2 \: \1 Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 ^' q. x# T, @3 C0 b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 p2 N% _7 a8 s: l6 ?, T]
* N. q  F# b  o4 f; S( V]
3 |* a7 q7 p4 L! }- Xset global-proportion note
+ H; d7 A$ b8 z6 S; M8 n]4 A- }- t: h& N. p. z, f
end" A: i1 v% q/ [7 \, o2 {0 ]& ?
; K* a6 S' H& J; D$ T
to do-trade
: W; ^* V) F" [$ m1 _;;
这个过程实际上是给双方作出评价的过程
8 k5 @, t  V2 \! z1 i) rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* f# y# l6 H* h9 D3 ]) e! n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" I6 ]7 f1 L) q3 d' Y6 xset trade-record-current lput(timer) trade-record-current( n& @7 ]. B- l- J4 n
;;
评价时间
2 P2 [. D5 J# ]! A; H) G+ E3 u/ }$ Mask myself [# [/ C( P" W: S0 ~7 i4 v: Y
update-local-reputation. E/ x6 J8 O/ i- G
set trade-record-current lput([local-reputation] of myself) trade-record-current6 k0 N0 M& X  R
]& o- K. n( h) Q. @5 P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! a& L! B6 I% S2 s, |
;;
将此次交易的记录加入到trade-record-one+ z0 h% |3 x8 q/ T* i8 `$ A5 s  m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- U8 O9 J/ v, O) y# A$ elet note (item 2 trade-record-current )
$ |8 E) f' e; S0 \: f! ]set trade-record-current3 ?% O' S" R% G) g4 g! y
(replace-item 2 trade-record-current (item 3 trade-record-current))
3 g0 W; c! f! y  l5 Y
set trade-record-current2 E4 j7 S9 R5 s; v' B: J* A
(replace-item 3 trade-record-current note)
8 W. t8 i5 \- l6 M# M8 b. G1 U, B' X3 ^! d9 I0 z

, k/ ^* j2 F. m# gask customer [4 t* O! G/ X2 {. U- i; k  {
update-local-reputation
# \: t" {: ^/ M' K" N3 m; nset trade-record-current
6 ^$ a: J4 {, U' J! W" ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  Y7 m2 S5 y, S6 ^) }. ]]6 L% `- G. Q' K

: L. o. N* M4 @) F( k
! W' j: |' \( m, h. r+ Z( i2 I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ f' R  I' e' L
. a6 ~. `" J( j7 S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 J+ ?. k% @& W7 O; F
;;
将此次交易的记录加入到customertrade-record-all
/ E* A2 W4 K0 Qend! K( @4 {& ~# A7 N+ B6 g3 D  I

( V9 a! Q# a# t4 r: A9 L8 n& A9 cto update-local-reputation
$ b1 b+ a1 n& }4 eset [trade-record-one-len] of myself length [trade-record-one] of myself
+ i$ c/ J7 U& m& U% U9 c/ d0 }" q9 Y* B* c. x
2 J& u; X5 y3 C$ d0 [6 b
;;if [trade-record-one-len] of myself > 3
" R  X6 @9 a9 H8 W' `( z
update-neighbor-total# o# r- ?$ W1 p, b- l! ~, V
;;
更新邻居节点的数目,在此进行
8 [5 r9 I& }7 Hlet i 3" P, p! n# h1 c: p1 z. E  I0 O
let sum-time 0
- ~3 K8 P; g2 A0 m& ^/ Q; ewhile[i < [trade-record-one-len] of myself]
1 a; q  R3 V1 I0 m[
  x) m- o  `3 S+ u% h  s0 iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 H2 s  q5 G8 h: m5 Y( w! Mset i
( @" j% e$ e# h+ Y0 e( i + 1)
6 c4 A; t) t% a5 k- e, v" @6 f
]
% k, R/ J- B2 m3 Llet j 3
: E4 a' i( F5 d5 Y8 M& Blet sum-money 0  P$ Y/ B/ B/ M7 X5 T& g" I/ z/ Q
while[j < [trade-record-one-len] of myself]; @* ~2 U6 V4 a. r+ o
[
: d- I% L2 L6 s% [9 Y- h6 ?9 Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
* `& @* E; N1 tset j
6 [) X$ ^' m9 R& r9 o( j + 1)
9 W4 v* B) T; S" g5 r% @. e
]
4 f/ L9 @- B$ h: [; S! ^let k 3  ?' W0 @- g& e
let power 0: j* l- \2 B& v% }+ x" a1 A' z- R# z6 l
let local 0
* I' _( @" t$ N$ Wwhile [k <[trade-record-one-len] of myself]4 p1 Z; u6 a& E, K& X9 R
[
% ^8 P; @& O$ D$ h( Iset 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) ! b9 O( P4 ^  k$ }
set k (k + 1)
% i' W  o) r& p  B# Q% s8 N* []3 M& y3 A6 l5 l1 [4 i
set [local-reputation] of myself (local)
' U, w) u7 w2 c. Qend
6 j% u' R4 H5 b  O2 e# Q
/ B* K( c! k8 r+ ]& _0 Ito update-neighbor-total! U4 D: q# G" O5 `8 y* ]) }

) z3 X1 @4 @% R0 ]( M- Q) oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) d. W  t- f  J7 X- K4 i6 \
" o$ ]/ z5 t  u" ]. h* r
+ h6 B% c6 f% k$ V! g
end
( q; H; s/ e2 Q! j  y$ h4 S
# ~0 s8 R: V- \& [to update-credibility-ijl 2 j, c$ X! z9 ]6 f" ?9 ~

# U( K& U; l( p! z& Z0 U;;
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。
/ q/ |, M" D) d* f9 r" [" Z  Vlet l 0  P2 j) G0 `6 G2 O6 [0 I
while[ l < people ]
) U; z3 `  L' i( b;;
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. M! ]+ Z( B/ g& `4 S) s
[  D2 V$ p- p$ d7 _% K% }
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); \0 @1 h; E; W3 v8 v* {
if (trade-record-one-j-l-len > 3)( n5 e' A' B, e
[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
0 C- M8 ~' F: X# t9 O$ Slet i 3% c+ ?6 b+ s" S
let sum-time 0
; O  h3 y+ I$ `4 O( D4 qwhile[i < trade-record-one-len]
& I7 R( z3 g, G8 u[. [( r, L9 n7 A& _' A. h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* Y6 r. t" I! s: Y+ mset i4 U8 f  i; ^% r" ^
( i + 1)
8 K7 c* P4 C! S( M/ X
]6 N. m2 ~! `0 [! [) ~
let credibility-i-j-l 01 L2 v1 v" o: K
;;i
评价(jjl的评价)1 D* @  I4 N! H; ?- K% n
let j 3
. z' H6 ~  t& [6 k) d) Llet k 4
3 ~9 E" Y* \$ Iwhile[j < trade-record-one-len]- L2 S- o; W- }! C7 s% a! E
[
6 J. Y+ T$ ~5 Owhile [((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/ H" O8 D0 v+ U+ w
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)6 V- a3 {0 |/ L) {$ p9 E. S
set j5 ~9 h: Y5 p8 e$ ^: [. ~1 `
( j + 1)

$ K2 h, c( v/ x$ C]
- J8 a9 R( v# i& |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 ))' D% E) t+ n& x6 H9 R- o7 s  j
+ F  \; X8 ^# i4 e) g  Y0 k$ v
6 a7 V, J% r/ `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" Y6 ~5 J8 E# g" o* x9 X;;
及时更新il的评价质量的评价
/ Z) H+ l6 ?$ y8 T6 [  F; Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- x; U- K* M/ r1 _8 f8 G6 M2 h8 V. ]& ?
set l (l + 1)2 @" C2 S2 ^( l( M8 `
]4 C& ~0 g3 N, \2 V8 ?. T5 d
end
3 B7 u  O  W4 W8 ~2 d/ R  i, G9 g1 v3 c, E. J
to update-credibility-list
- t! |. R& S6 g* \% q& W6 Vlet i 0, @* c2 _* h7 r( L* h( Q# o
while[i < people]! p7 [* O# [" _$ x/ Y+ U0 E
[8 t! \4 b) ^1 U, f
let j 0
1 w% U3 l( ^# \  a/ S1 H! k7 \let note 0
* w+ A2 u' E+ P8 j% }let k 00 u- W7 K) e$ P  [( E; _8 X
;;
计作出过评价的邻居节点的数目
$ x, x* t9 X6 b; H- c0 p2 vwhile[j < people]
5 T! P4 P7 D7 N; F! u[# r" @8 {! f- F7 i  y
if (item j( [credibility] of turtle (i + 1)) != -1), t$ W+ j4 `  J) D
;;
判断是否给本turtle的评价质量做出过评价的节点% p4 ^3 y4 D* ]4 d9 k& q9 V! R
[set note (note + item j ([credibility]of turtle (i + 1)))- O7 S9 c( H7 U- Q
;;*(exp (-(people - 2)))/(people - 2))]

( a  F6 t: Q. i5 ]# l% ~. W2 Aset k (k + 1)! m  `/ E) r6 {; l% {
]* r' R4 ~8 P0 s% g
set j (j + 1)
% U* R( v7 z8 v, q" A/ a6 r]/ `0 T* }6 s; ]4 |9 ^0 q
set note (note *(exp (- (1 / k)))/ k)$ }  g7 h$ u+ K. d4 ^
set credibility-list (replace-item i credibility-list note)! [0 |9 n% u4 Q- o' e
set i (i + 1)
. c! W* |6 U5 X. D]
% }' \' e8 w1 O( N; d% Mend
$ L* e) V5 a, X9 S: l
  Y9 I8 F8 F0 h/ F1 bto update-global-reputation-list
' z5 U; D% |, x5 [! v( m9 Zlet j 07 N# R3 q( h7 ^  T0 S1 y
while[j < people]
& T8 k4 S- `  H+ P[
( g1 V4 B* \0 y* G' s# u& z- s! clet new 0
! R8 t* N- K8 h8 h( r3 T;;
暂存新的一个全局声誉/ W0 S$ K# P# V% {
let i 0
# Y0 H1 z" @. ?9 [( d+ ]let sum-money 0
8 q5 e) [% e! L  mlet credibility-money 0
* f6 E8 k  A8 \. x2 Q/ Z( awhile [i < people]1 O( G4 \) ]+ b- b$ ~5 |
[7 P9 r4 x( D3 k- d2 O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! i% Q7 R( v+ D- D3 |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 l% g/ D! x1 S1 ^7 e4 w: lset i (i + 1)
9 t) l( X" A3 P: c. i( x]
$ r* B, f# \7 \let k 0: r0 ]; e/ x0 ?( U9 |3 y. o
let new1 0
$ y! g5 F7 k; R5 M* I0 t* ^. u- h8 ]  gwhile [k < people]! Q; ?5 b& _$ `- \
[
3 w% l3 m2 Q. F! g4 [, U6 p! eset 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); m$ a2 e; `+ E1 O
set k (k + 1)
& Q4 M% _2 o, X! L  X9 W]
6 ^$ ]4 J& V7 I7 K7 kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; a% D, S+ X/ R; N1 pset global-reputation-list (replace-item j global-reputation-list new)1 M4 z8 s1 m8 a( z9 r2 O! J
set j (j + 1)
' y6 h+ M  G3 z: g! `( []
  b3 ^  d1 p. H. ]0 t- |end8 ?: K" V4 ]9 ]
, H  m. d. e( K
$ q3 W9 q% K$ W% r" {
, `& H& X2 W/ [5 l
to get-color
) M: T+ j7 {/ M4 U
& X% z3 Z* T8 z" s! xset color blue

7 _: d" |2 Y4 z# h9 n( n0 \1 }* Pend4 o6 L% {1 u5 d7 T- D0 ?

; V1 T* F% b( pto poll-class& W* u& B5 x8 Q
end# f. d- E4 Z: r2 r& _2 z& a2 f" g% _2 [( N
+ i0 s$ e7 l  D3 y- ]) L
to setup-plot1
* l8 r; j& E3 ]' T1 N7 w
' x7 ]8 w! k2 Y2 m# _, {4 t/ Aset-current-plot "Trends-of-Local-reputation"
* c# h/ y+ ~1 ^

& L  u# C! Z# Q+ H4 rset-plot-x-range 0 xmax
2 x9 W  P2 F6 a$ R5 l- j

# }! ?1 Z" ]& p7 ?) Mset-plot-y-range 0.0 ymax
9 i$ |% l( \! ]7 X* ^3 o; _
end5 e; S; T' ]7 W; X( K
: p. v8 f" [% g/ P4 N; m2 p4 `
to setup-plot2
- n/ E! N% p" u1 L% I1 ?/ H) B/ k& l" r
set-current-plot "Trends-of-global-reputation"
- E; L+ O' Z, @( B. ^7 B/ R1 t

) j2 `& h* v1 U- @& N: jset-plot-x-range 0 xmax

/ D/ d& L" l6 {, c: [" S5 T$ @- u: F* b
set-plot-y-range 0.0 ymax
9 H  k/ W8 g4 r+ ~1 e
end
+ Y0 ^; w' ~) `% O, t# s3 s' O/ S5 L( x- B! x  }
to setup-plot39 p2 [/ N- v3 }& G' E
1 M, P# f: \) a, g7 m0 _6 S
set-current-plot "Trends-of-credibility"
- X7 R$ [8 W# t  l! g% [0 h

6 _" j+ Y. l/ q$ n; I  B7 Iset-plot-x-range 0 xmax
& J5 }, [' P- M# N
& U  Q/ L3 [9 h, g
set-plot-y-range 0.0 ymax

. x# u% j4 A( ~1 \0 J8 |/ w- ?4 Jend1 I$ K0 S  s# N5 T( Q( |) A3 H3 _

2 c5 l  g9 ~+ M; o$ y  v& Hto do-plots1 p9 Q" G$ `( n$ f
set-current-plot "Trends-of-Local-reputation", B7 B# y  z& a  |
set-current-plot-pen "Honest service"
+ n8 V. {& j# Kend0 @; m% _3 j; Q5 \7 G! |# Y$ }# e
5 F& E( K/ @4 U' Q
[ 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.1 G* G! t9 E7 U8 m3 w; X

) |4 f2 m  p; z' J9 t/ `, ]$ z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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