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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:
* j  Z; m  k) x' ]# U3 B$ eto do-business 2 Z7 y; L" Z$ B8 S1 L9 J$ `
rt random 360
% }! D+ d$ M! E% K1 {- S fd 1
/ T  t: e, ~* ]6 X ifelse(other turtles-here != nobody)[
$ j: f' K  ^0 S( W  h: C   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.7 d' ?/ y; `0 D" q( c
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! T6 J, C4 k4 D+ R3 d  C# a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% k2 [3 d! P& M# `  g   set [trade-record-one-len] of self length [trade-record-one] of self
, N) s. K1 b  K( L! [+ d- O+ n   set trade-record-current( list (timer) (random money-upper-limit)). H& ~) B2 f  _8 J+ x7 J5 S3 H

) N! f8 @; \8 y4 b% O/ a3 s问题的提示如下:
9 U, K% T3 C. C. Z/ q! t+ s& z7 n3 ^2 g' B8 q
error while turtle 50 running OF in procedure DO-BUSINESS. V; ^2 A% K* H: S8 C: _: |
  called by procedure GO& D/ n: C$ _' Y" ~
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 }- B2 l( q4 ^8 Z( L
(halted running of go)' y% I5 M1 G' G; B2 T% E

: L* Y: V4 F) g$ F- Q. Y( F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~~7 o  D" V- M* F4 T+ g1 x& A1 F, s
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" U; }9 G: L: E
globals[
4 \, n' a* \  r  j$ L$ Vxmax
3 f" k6 {6 w; g1 D0 Symax
' z5 J+ g0 t; @' t& ~global-reputation-list
, Y" |& |! t5 I0 ^4 F( R7 r& ?$ e0 e" U4 b
;;
每一个turtle的全局声誉都存在此LIST
$ |* |6 `: g  k, Q7 acredibility-list
2 l* T! K, I  ~) [;;
每一个turtle的评价可信度
# U& R" r! M% m) F' a  J1 U) ?1 dhonest-service$ H, m2 \+ ?, ], p, |/ N+ O
unhonest-service3 z5 v, o# }2 d, ^, M
oscillation
7 f7 P5 h1 {) B, i% erand-dynamic
3 j' U. U& z$ F8 j& B; _; o. J]! U  I5 x7 [$ o- B2 P8 c% U

! c7 D1 B8 }( K! w! h: vturtles-own[
; m6 K5 I6 j: _5 rtrade-record-all
3 k/ k  B% e4 i2 c; v4 H7 K; P9 F;;a list of lists,
trade-record-one组成: `4 H. [. r" M/ P" s" D
trade-record-one# T* ~: Q# p/ h! ~6 ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录/ k! }" x0 ^3 a/ `7 w$ `
% c. {) e0 T' i4 ]
;;[
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]]' }' B. n4 M, j1 N- S2 D
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]
7 p. }/ O# w' N5 _0 D# ocredibility-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
8 j' ~  g% a! h  C1 T/ z; V4 aneighbor-total
+ m2 j, z, ]9 p6 {7 L0 R, E  E" D! @;;
记录该turtle的邻居节点的数目
* ?* P+ }( a- @trade-time8 E5 _! o5 R: J9 Q
;;
当前发生交易的turtle的交易时间
, N8 X! N' R. W3 Mappraise-give
, C/ P! l- z6 h2 d;;
当前发生交易时给出的评价
! m; V+ E! {" D7 wappraise-receive
$ |# I9 @+ M$ j* x% |) X) E;;
当前发生交易时收到的评价
3 y  ^9 _1 E. S4 b6 {8 z3 z$ fappraise-time: p3 Y9 {% ^% Q7 W
;;
当前发生交易时的评价时间
2 S  `8 f, [: }/ Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 E1 l: c3 B1 ytrade-times-total) `! J# ]8 D( q4 a9 l
;;
与当前turtle的交易总次数
- P  |  F5 q% V3 p7 L+ u) rtrade-money-total- Q- z7 S+ z, t& |! L
;;
与当前turtle的交易总金额
& J8 u8 b! a: Y: |7 H; plocal-reputation9 |+ l8 ?2 ]6 A7 s" h. a2 G
global-reputation8 D" O- M2 B' d( Z' |2 j
credibility9 w, b; l! R  I) c. z
;;
评价可信度,每次交易后都需要更新
7 h, m1 r8 Z$ [/ ]! [2 ?credibility-all
8 g& d6 }6 e6 G7 F1 a; @3 S+ I;;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) B4 ]" r* W4 X* q% U0 e# _
% X' u8 t: z5 U+ w6 W
;;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" l, F5 g. K% ~1 d8 o2 i
credibility-one: {" }0 p$ [- N4 c4 r% q; o
;;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
  S. T2 J  H5 ?4 xglobal-proportion
: G. S; x9 N# C$ U: Scustomer  y$ M4 Z5 ^( W& x* n: J
customer-no% i" \& x, |; y3 f7 L. u7 x' x
trust-ok% t5 s5 D6 S6 h' f2 y
trade-record-one-len;;trade-record-one的长度
% j( ^+ p4 y# y2 G+ U5 H* T; _9 n]
; ~  J, |6 P  K7 O: z0 P4 A/ s! Z
;;setup procedure0 n6 ]+ u; m; c0 M: D0 W) ^" W6 b
8 ~* b% v; N, V# d- e# O3 Z% I4 O
to setup
) J$ @, S' f/ r- y/ u& }( f6 j8 k7 r
ca
* G$ Z! p  r* d. X/ I" a
( o: o9 o9 T5 x& D& x
initialize-settings
" U) R4 `; I! N% `  f. V0 [' B
/ q2 q$ {; w4 }8 W  g' e
crt people [setup-turtles]

8 h# M8 R* ^8 D) T" j2 m
/ `5 h; q1 O( Q+ T9 C  P2 Y3 y2 Greset-timer
: Z! i6 ]" v4 U+ m: T

! [/ `6 D( _" z* a+ o) }; Xpoll-class
4 L# j3 }8 [8 A4 m6 F
5 k- a) J$ f+ W" g2 I* h
setup-plots
5 V, {& d4 S/ @/ A4 r
7 G8 E, O+ v3 U4 }! q- m+ [7 \
do-plots

0 D& ~! ~& O8 R1 J2 g( M. F8 Uend
7 y9 H$ f! \+ o
+ D1 b  S$ Y8 U1 q/ F7 Y; N' ito initialize-settings. G/ f. }! W* ?
  t/ m5 ~- L' q
set global-reputation-list []
& u$ |: ^* t5 O6 s. c" e
" W5 Q" G! @* _. g$ u$ n1 T
set credibility-list n-values people [0.5]
+ L. z! J2 i2 C4 p& w5 N/ {

8 g! |  B# x9 B9 Iset honest-service 0
9 h5 Q) }; e# k  j6 X

( Y6 p0 L3 o: t% s# J  Nset unhonest-service 0

' o: X7 v0 _5 V% j9 G! y/ A  M) p& [$ ?5 y, v4 v- T* P  ?; x
set oscillation 0

  z2 A$ y( t$ T# v! \0 d( |5 i# m5 |3 P
set rand-dynamic 0

) `( T; x& e2 Send
- g! `) z! w" ~# r' R* e- z; G1 H/ X7 C" j) @3 {  M7 ]1 f9 ~
to setup-turtles ! h+ e# I. r( i/ r* y
set shape "person"& ?+ y2 S; M: \+ q5 u
setxy random-xcor random-ycor
/ t; |$ K, R2 _# [- \# jset trade-record-one []9 Y: |! v5 q1 }; o/ N6 \( J% {4 t  M% M0 S
9 d1 @9 k8 W3 j( D7 c  X
set trade-record-all n-values people [(list (? + 1) 0 0)] 4 z; y# f- P, e  J
8 Y# _" B& Z+ C$ `  l# ~
set trade-record-current []1 `. V/ J8 j* C$ ^. P
set credibility-receive []
, {- w: B2 s; {, ?$ H. ~8 _1 Xset local-reputation 0.5
7 w- u8 d/ F* z6 f! Oset neighbor-total 03 U" I% a4 R& O& {0 o
set trade-times-total 0
7 z' h6 u) W. x% ~. d8 C7 q0 D3 kset trade-money-total 0
; K! E; r0 Z1 Z) ?3 ]: v2 Xset customer nobody4 R- T% y! c( X
set credibility-all n-values people [creat-credibility]7 n" }+ Y+ K8 d% {9 [( ], U# B
set credibility n-values people [-1]% f* H. d1 M0 P; b' m7 `& m9 c
get-color  P. F, p/ i  i

" I! F! w! _* O) Eend
: Y/ ]) j2 V8 K% M8 J5 Y2 x! @' }
0 a$ Y) Y: P4 M5 |3 g' @9 b3 Hto-report creat-credibility1 K: [& q2 @% ]- T
report n-values people [0.5]3 y1 f5 x* [5 G" W' d4 X7 w% ]
end
1 q+ G; d: a( c& ]4 T/ r: |
% h; E! z  g% }) p9 Hto setup-plots
. B( G, F- l' v" f$ z7 \. ~3 o" Y- d! b
set xmax 30

% J8 B8 D- j0 u$ N9 l# r% l
% j- q, v" M5 cset ymax 1.0
0 I. M9 L- |  Z2 [5 p

/ y9 k  M/ k# _9 Gclear-all-plots
* ?4 Q! G8 d; C- e. t; f

, t5 p0 |0 |$ xsetup-plot1
3 H" c0 R, x& @9 o# l* L0 G- H

: E: u' I* G- t# x7 N. jsetup-plot2

5 C0 A$ J" Q; G. l& {
9 U& x2 A8 P) t" [$ v9 F8 hsetup-plot3
7 ]2 ]& G$ ?8 V6 A
end
/ w3 X  e5 O7 V
2 B5 {/ [) \( d* ?4 k# ?( S;;run time procedures
9 V- O% L/ C. K: Q& V
' V, z3 a: |$ p& ^to go" \. }  d5 r; }! U$ }8 K1 {

9 f0 ]8 W) k4 \1 U9 Y* W$ a; K* b1 hask turtles [do-business]
. m) ?6 l( @7 T" W+ l5 X& q& f
end  ~8 d7 ?+ H. N: t

- }5 p% {: U0 X2 _' gto do-business
: w, y7 i7 a8 L3 u8 t3 `

1 K3 z6 d9 ^: f4 l, ~
0 D. j6 E" V( N# m, [+ c" ert random 360

3 S6 O% R2 Y4 B  x" j) ?, e6 D2 S
fd 1

0 c; c" G( z2 N2 @; n2 s% e5 Q1 Z: b& U7 D: o, A9 y- x, |
ifelse(other turtles-here != nobody)[
4 M4 P' o! X6 [' I( r0 d

3 w% R* H& ~. `3 S+ w, kset customer one-of other turtles-here

. V  I. f( D0 F7 c8 v! X- R* I
8 Z! ]' Z7 h! I* m( q! n0 O;; set [customer] of customer myself

/ B$ U+ ?# u  y: I: h; _1 S4 y$ l1 L% M6 @) ]3 y
set [trade-record-one] of self item (([who] of customer) - 1)
  R" r# |; z: M" x/ B[trade-record-all]of self* c: M! _1 i. `
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 i* N& a: [" ~& W9 _
- O4 v5 w3 V5 s* b% j5 h7 Cset [trade-record-one] of customer item (([who] of self) - 1)+ p$ M  {( n9 T8 s
[trade-record-all]of customer

* p- j( O& {7 A- q: p" R; O8 C1 A9 o$ d* L% j  x$ e9 l$ t4 t
set [trade-record-one-len] of self length [trade-record-one] of self

& h; P2 a1 m+ @! ?
; h4 e9 `6 M, h+ T- E8 ?set trade-record-current( list (timer) (random money-upper-limit))
* ?+ Q9 n1 ?* I9 }' E. @- |

3 R# m' j9 I) t) d2 Mask self [do-trust]
& _0 H/ e- _. R" z; c" L;;
先求ij的信任度
0 E# B; q9 I3 e' r) P( @. b$ `- I! u5 x) j/ t3 p& _/ ]" n
if ([trust-ok] of self)+ a4 U; {; n+ M
;;
根据ij的信任度来决定是否与j进行交易[
7 R: n1 m+ h1 h$ F6 U- D# Y# |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ [4 x! p- H7 m3 G% e! N# b
# }9 g% L+ {! r/ x( k[
: t  y7 L; d  X5 D, m
. `2 S! f" X' ?% n) `+ Z
do-trade

' `6 [$ q/ h# {9 N
# D7 [; x8 K7 y7 ]/ cupdate-credibility-ijl
" M) J+ x. x$ `
+ G2 X+ G* t* o. t5 v
update-credibility-list
* o' c$ s1 u* z0 \2 h

( e- L2 ?& |( j3 `5 u5 s/ c8 d/ G
8 N9 `% G/ b+ |! `5 eupdate-global-reputation-list
$ d- _( u( \* P- }. \3 P  z, R
( G2 D, l9 w" C2 I
poll-class

* P3 @, n5 v  H, \
+ b/ N1 S8 k8 R6 J( Lget-color
& O, J+ Y2 L# {% }, ]

3 u" h6 |5 F8 w  L# @1 G8 R]]! C3 `8 c; A, R6 s. i
6 A) j  G5 U& K2 b) B, q
;;
如果所得的信任度满足条件,则进行交易* |2 P& q2 B0 i

0 k4 E( q; \8 @" X5 G8 r0 j7 s6 U[

% {1 q7 u) [+ ^& Z0 F
# U+ u# i3 j: j* d9 T9 \  l2 Q! `rt random 360

) X: s* I) g5 ^7 T3 E
3 N( I- b  U- w: Q  Q+ \6 kfd 1

) r( n* C: M0 ~% k
  j4 o/ K! \& }/ U]
  W9 J$ g# \& i1 \
2 j; p2 C* I- Y: e1 `$ o, [
end

( ~: B& f: z6 K2 |4 s* z3 F+ T0 {# L: P8 D: @+ r6 k* O
to do-trust 3 w. W0 I) P5 L6 |  y* z, g2 j
set trust-ok False1 Z# \2 r) K* ^
9 `% f( F0 P- h; a

- q, ~4 R, V0 @: X" y4 Nlet max-trade-times 0, U7 Z- f4 d5 ?. Y& m5 B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" a) |6 r) D8 j- r' T6 O2 H+ d
let max-trade-money 0# r( s8 C- z( o3 b3 z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 D: y- S* f$ ^, U9 \% _# \8 z$ |+ N- wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- J2 L' t4 E6 ^) V9 O9 ]" i" f4 c, g
6 z/ X1 D$ \* f/ C/ M
get-global-proportion4 G' B. u; V; A7 k9 E' X6 q
let trust-value
- O* z( T& g2 U9 flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
9 V1 M3 g# v8 V* f- w4 C! L" I3 F3 k
if(trust-value > trade-trust-value)6 A5 f9 g8 ~; W+ D6 [/ P
[set trust-ok true]/ p- E! V; \) A$ @; G
end
' W$ i/ ]: t: H. P: V! X, i6 e: g1 y( ?7 d6 ]
to get-global-proportion
: W9 M2 q9 G- ^/ d+ |  x" X. ^4 yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* g) ~: t- \) M, E
[set global-proportion 0]
6 n8 O/ d6 s9 y- K$ g0 \+ I[let i 0- U: B9 N& [  J+ R
let sum-money 0" t  \% o4 u+ O% J2 H0 S8 K
while[ i < people]' h& s% s9 v$ l! H
[7 g: h4 {' r. B) }
if( length (item i
. ]* v3 c8 o! `6 ?% D  _9 l, O9 z[trade-record-all] of customer) > 3 )
: T: t. i5 Y: F/ m  A1 J3 n5 r
[
2 _2 A6 i; `2 t0 b: |set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ s# c- |2 p7 W, Q* j% g]
3 Q. x: a3 u$ g' I]
0 d1 B8 E$ Y3 E2 c' r1 s# F( Vlet j 0
* }% \- K4 z# T7 p1 Alet note 0& t6 S+ F3 L4 N) ~) x. G
while[ j < people]
2 D% B9 H5 V% d8 H9 K/ r. W[
9 e, }2 J2 v' @8 gif( length (item i1 F/ W$ x& g- V( H% L; y9 ^5 N% |
[trade-record-all] of customer) > 3 )
# B2 A# h  R0 ~; P5 d1 p+ h
[* b& w+ C) J9 w- k5 s
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ s/ B6 H( b: ^& u+ u* f- ^- R[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 H6 t( \. c% t* o8 }" ?! T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ `3 e  u+ Q5 R& e* R4 d; a; s) d]
6 S+ i! ~( ^3 W; N, }" i) ?8 p]. T6 c" B% ]/ I4 t& w! T2 c
set global-proportion note
$ s8 c- q% S0 p9 Z: I]
1 J: y; o. i: \5 Z0 Eend; l# n: C! _. X' n. V
' l: p( l- o1 z9 j6 ?! r0 u$ s
to do-trade
/ }5 E( h$ Q! X! X5 z% A;;
这个过程实际上是给双方作出评价的过程! l! j# E' R) h+ V1 i  v) C5 b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 }. `, ~- O. A- yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! _2 _4 }5 ?7 }& y: B; F
set trade-record-current lput(timer) trade-record-current$ b  B+ r- m( z0 {
;;
评价时间
# l0 E* a2 D# U: F/ J. W0 nask myself [, x# k7 J, l" n1 V8 j
update-local-reputation+ h9 E; K9 I- Q. ?3 D2 @
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 u# ?3 j4 w$ R; B]7 x4 Q/ a" H  e* ?5 ], f& I2 c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 L+ B5 m( F5 Q) _8 f& B' g;;
将此次交易的记录加入到trade-record-one/ W& A8 n' @& w) q% ?
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 A1 q. }& G" F" d' U8 F) qlet note (item 2 trade-record-current )+ C* x, B% X- e/ z: b
set trade-record-current
( o9 H/ a0 L: M; W& Z% V( g(replace-item 2 trade-record-current (item 3 trade-record-current))

. D* s+ I+ \, t6 U3 w% g' `set trade-record-current  ?+ B/ n5 Z1 C$ E/ }- B6 D
(replace-item 3 trade-record-current note)9 U% z* f) ^  T. Q: v
; d. ~$ u% A* L/ G5 ~# D- z' U
. ?- w1 _% g: H! i1 x( S4 Y) x  n
ask customer [# ]; y9 l; o7 E* H; @/ C) U: I* D6 U
update-local-reputation5 `2 Y5 ~7 F4 r; H" j5 t4 x( u
set trade-record-current
6 x5 C& V# k8 P1 v1 ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 l5 m+ g1 H4 R, Y& W- p
]
9 Y* h' \. k/ K6 |$ j$ o9 @- v# ~1 [$ {* x5 `# }

; X+ a# a& p# [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ S6 `- ~* P2 L6 R% F3 P) [

( ]" a7 o5 E4 a- @) bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  B7 {  ?1 h6 U  a3 h! r4 d
;;
将此次交易的记录加入到customertrade-record-all% m' _7 W) |  C
end" l5 ]" l. C; [2 a* L" M7 j

% g4 M: j6 C# w3 ^# @to update-local-reputation
( {% x9 O& J: @; x' hset [trade-record-one-len] of myself length [trade-record-one] of myself3 v) y% Y8 t% W1 M0 Z

/ i/ Z& U: p8 B& c2 a$ B" n& f" v3 `: ~* T
;;if [trade-record-one-len] of myself > 3

3 E6 T* [9 z) w& }: |, ~/ a" Rupdate-neighbor-total2 p. R4 ~0 h3 c1 K$ D% E: i
;;
更新邻居节点的数目,在此进行
! g! z7 L8 I% S0 r0 I$ zlet i 36 V; @8 y& Z3 Y
let sum-time 02 N' s. j0 J# j& @9 U$ G# j
while[i < [trade-record-one-len] of myself]; ~( t9 z# `* |& R0 _, R, O, r
[
1 }( r' Q' Y, r2 tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) h% d7 }  y1 w3 {7 G" Wset i
1 l; K9 e5 A$ X6 ^8 E$ `( i + 1)
3 h3 L, V3 \0 }4 n5 S7 ^
]
$ L, z9 c% C* q! E; Q% Ulet j 30 R& D( H+ W9 X1 F# ?
let sum-money 03 E# v# u  p- ?
while[j < [trade-record-one-len] of myself]
& u7 x1 b  h" w5 i[
+ _3 Q/ e  [; b. p) f2 Cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( p- w7 w6 G$ A0 B- E
set j! R' L) d* F/ v0 o* J
( j + 1)
, K3 M2 M. J8 _# C8 [# ?
]) `8 n/ t7 U! `- R" C+ t
let k 3
3 J; M9 P7 S% J) F- M$ e( d0 Elet power 0" A* ], Q! A, n" [/ I/ W
let local 0/ U7 ^- T& a& M4 L1 }
while [k <[trade-record-one-len] of myself]% o( H! Z4 L1 \/ W
[
& U: Y! p! L1 H- Vset 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)
7 r$ Y% m. l9 n' c8 mset k (k + 1)7 h% [: _: C0 W2 `: o. I) J
]" }3 c6 b) H& r! A6 q8 b8 s
set [local-reputation] of myself (local)
* S5 O- o  C. H" V% N9 `6 B1 Lend2 u% @8 _, t" d5 [/ ~

4 W  @% J/ r& H. ~& T! u. yto update-neighbor-total) ?' |; n5 Z2 O
8 M  d& j' z; \  I# m
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 w& G4 A! I, ]( _3 w

  g- H3 h2 T& D% w$ @5 J) a
* ~: y1 @) {7 s
end+ j7 N$ O7 Z; S, i( L  W7 r
! J9 X+ m3 u2 B- B3 v* ]: K& Z1 x
to update-credibility-ijl * l$ H1 F/ S; C4 c

: t# v' k! M, N, K. o- |;;
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。7 Z9 E3 x) f: B% T
let l 0
. o" F1 C5 g& V4 pwhile[ l < people ]
2 Y4 C+ k, q* F( t;;
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
% x. x& [; Y$ J. G* c' ]' a[
& G* j6 o7 o. }) hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 f: n4 P4 k- p8 f& o9 l' Y+ f1 e& I
if (trade-record-one-j-l-len > 3)+ k* Z' p, d5 v# 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- n0 ~# B9 M5 Q* e' S! Y
let i 3
6 l8 W5 i, _) blet sum-time 0! X" W. u( k: A# C2 C9 O
while[i < trade-record-one-len]' `/ Y2 L# a! v& \
[7 R7 f9 b4 ]7 ]0 v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  ?6 D4 B% y4 `- C3 [
set i. w& F* d5 T' Y1 u
( i + 1)

  M5 T1 w8 w6 b' Y6 s  @- {]
/ h9 g: }; N' N3 N% z1 hlet credibility-i-j-l 0. Y. I  j" U# Y9 i) \  _/ l7 f
;;i
评价(jjl的评价)9 L' H% x2 l8 \( |8 W: v. \
let j 3
/ Q1 ]% ^+ B& A+ W$ }3 l; @let k 48 y7 w4 f3 u2 m5 ^1 M
while[j < trade-record-one-len]5 }( j& s6 W/ n  Z8 I
[8 `/ e& u0 B+ y: k
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
: D( u, I: d; Tset 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)
( ?9 ?$ `; O6 l+ E% N+ Mset j( h: \  K3 U8 E! O' B- C9 g& V
( j + 1)
, w) N2 ~" Y7 u9 j) `; E1 x
]8 U/ ]( q0 r. W! L+ @
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 ))
: i1 o+ M# i9 ~( R/ Y
5 m9 \. t, ?1 s, c( }5 f+ m2 f

( r) [5 l* P# R" a3 Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; N. p8 r1 e$ n' i+ s) g5 O;;
及时更新il的评价质量的评价; I. G& E: P8 A% }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* Z/ V. @% V, l
set l (l + 1)
3 _' w# o* z. i]
# T  K7 r( ?: E" T- k+ L! \( {2 Oend/ [9 x0 l: u8 ^
' k% [  O* J7 r! m; _
to update-credibility-list  l8 q+ I# i# V! l
let i 0$ y5 }7 N3 z4 ?. X
while[i < people]9 H( E, Z5 F  j
[0 d7 Q9 h5 i0 D( {
let j 0
8 \3 I/ [% h" n; o2 {- qlet note 01 l/ _  `  L4 W" F: S0 n
let k 0" l8 p- _- V# {# m0 K
;;
计作出过评价的邻居节点的数目- j/ o6 u* ~6 H
while[j < people]) H# e. q+ f; s; d
[( j: q* z* o: A. ]0 N3 ?
if (item j( [credibility] of turtle (i + 1)) != -1), u: I; x0 C+ r. s
;;
判断是否给本turtle的评价质量做出过评价的节点' x3 G; p1 N: W5 E6 E  [% R
[set note (note + item j ([credibility]of turtle (i + 1))), a: }, i  b7 N1 Q$ N
;;*(exp (-(people - 2)))/(people - 2))]
4 U7 t# G! D4 _7 `
set k (k + 1)2 o' r2 L+ ?. {% K& H3 [, Y
]: w2 \4 e/ m( }. |8 H
set j (j + 1)
- u  M7 ?; _1 S& L+ `: p]/ }' G' f0 J+ x: u+ _
set note (note *(exp (- (1 / k)))/ k)# C2 ]; Z, d3 V: l' S/ X
set credibility-list (replace-item i credibility-list note)
# m* m4 E9 m- Vset i (i + 1)& A4 k; [" Y4 Z/ d/ F7 J
]
8 [& h3 `1 S( H& }; G! {end& O. L! c4 ]' y, |. E$ f
# o4 F0 c: e! u" h/ E9 i( N$ n& [
to update-global-reputation-list3 n) b# L* u0 E5 t, @. B
let j 0
9 {" u1 ^2 ~2 b6 Jwhile[j < people]! ?5 {5 E/ U& b# S2 d
[# Y7 d! z* W, S$ d8 V1 P
let new 0
4 f8 O  K. W' M  J8 K' B;;
暂存新的一个全局声誉2 S" D; S% Y; S- D
let i 0
1 j" c0 l: k6 Ilet sum-money 0# Z6 S! w  j' u8 ^
let credibility-money 0( M4 o8 O0 q0 c5 S& |6 C  ^
while [i < people]
8 a8 ?8 k: \' i; U1 _" ]1 V/ D[9 H: [4 v( \; ^
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 {& I3 `5 y$ H4 Q& l6 @3 Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). N7 f! K( a6 A6 t+ E8 I8 z. `
set i (i + 1). d6 H( h' m' f" `" \# J! j
]4 |. Z5 X* K* a! k
let k 0
8 p+ |. I/ e2 W9 h$ _& Glet new1 0! s; Q+ ^1 O! n/ N7 i, S7 m" c, X
while [k < people]
$ N6 M, |4 J) i2 p[
$ ?. {* p: j! z8 v3 y9 \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): Q# s1 w+ N% |
set k (k + 1)0 x/ z1 v, {: d
]9 X3 x2 p! ~3 S( O4 w0 c# b1 ?( N& \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 i+ w) a1 ~2 T. R( W
set global-reputation-list (replace-item j global-reputation-list new)+ E2 O% i  k$ y( w& f0 u; H
set j (j + 1)
* @. @5 ]! s: ]]% A9 g1 O! _% ?- z  ^# O* E
end
  S( a; D0 f9 k* n5 d
; l9 O. g3 t. ^/ d1 H7 @+ L$ `( ?+ u) r' T" K+ `, R
4 Z, H! O' k% ]( ]6 t7 |/ q# Y+ r  E
to get-color
) e) v7 [+ W4 z1 m8 n$ k5 X2 x- g8 z  o% u1 d9 j  q
set color blue

+ F; s4 |5 C6 q! ?3 |# I' `end
( ]3 \) K  }/ Z6 r! a/ N/ }7 S7 n, U+ p* `
to poll-class" _" h( j. p! l  B" X+ z
end
9 N' j- N- A4 L; C& ^
7 c. B# q: }- s! `$ L8 Hto setup-plot1
3 r' J9 O- Q, C+ p1 b; M
2 I3 M% s) [/ N2 C$ kset-current-plot "Trends-of-Local-reputation"
  _8 k8 t/ ?) k; |7 u: S2 A( ^2 V
5 q0 s: P- b( p( k0 g
set-plot-x-range 0 xmax

3 X/ ]$ @6 ^; R8 A& b. p. Z+ m: @, F8 l9 g3 g4 B; T0 h2 x: K+ C
set-plot-y-range 0.0 ymax
) ]! U/ d) b& H/ I
end
1 g3 H$ D, h" W# w8 c' w! b- W; Q' N" |
to setup-plot24 K; d/ u# D4 l8 L. R
7 ?8 a5 `* D/ y2 |
set-current-plot "Trends-of-global-reputation"

+ q5 X+ M) D( }4 S3 [
* ?$ {/ f, Q. R% h$ F! J2 F+ [3 Zset-plot-x-range 0 xmax

6 m- t/ ]" M' X9 t4 O
0 m& k* r9 w; s4 Yset-plot-y-range 0.0 ymax
. ^* O: \# f6 l1 c/ P
end
' E, E8 X9 {; Z4 V1 s
! g0 H4 |6 ^4 E8 o" R7 }0 o! S. Bto setup-plot36 F: g: f4 L6 H# w- `9 g* Y7 Q

( y0 |. T: `; t0 {# R# Mset-current-plot "Trends-of-credibility"

; d, p* P3 i) j8 |$ x" @8 c2 @  w' E3 W) T$ H
set-plot-x-range 0 xmax

% j4 v' n# y8 }2 @6 P1 f* }# j5 k( V/ h1 ?, W4 O. ?1 [
set-plot-y-range 0.0 ymax
/ \9 ^9 ?$ u& }* p7 l6 `1 B% u
end
2 \9 K7 \  W1 `7 N# Z+ I; l( q  y: u! v) _3 d6 F0 C6 E  j. q
to do-plots+ E0 Q$ m+ d4 @# |; V
set-current-plot "Trends-of-Local-reputation"
$ W  Y. a/ ^7 u# [# |& mset-current-plot-pen "Honest service"
" s, W1 L* v3 b: ^: c& i9 v  U& V7 Nend
4 p+ F. L, h; Q; T# O5 |( K, m3 u/ f% c$ y; m; S! g
[ 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./ M0 W+ P& O0 y# p
7 k7 ^) B- w& k: P' J. _: h( r& 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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