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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:
0 U+ u* {- t7 x! nto do-business 2 ]6 k0 k7 g2 q' H
rt random 3605 z4 H$ B6 X. v, H& [  B' V0 E
fd 1
' G$ ]  {! P6 c4 G4 ?; ^ ifelse(other turtles-here != nobody)[
2 \5 }7 D. x, `   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./ ^, u' n/ a$ ]- b: L: Q- H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 x( \/ J/ ]4 m  @( V1 K; S   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 ]  g% e  M7 G, q9 {   set [trade-record-one-len] of self length [trade-record-one] of self
9 |  w3 C: O' y2 m   set trade-record-current( list (timer) (random money-upper-limit))
3 h6 ?) I$ D$ d. V/ M  m3 `) ~4 S% x0 j0 M- V9 [
问题的提示如下:/ X# B2 {# o+ y# G( V

9 u( b6 L, M+ U6 K9 d  S. gerror while turtle 50 running OF in procedure DO-BUSINESS
) g8 \: G7 g5 u( k; a  called by procedure GO0 {3 o% T; f7 F% \
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" d# ]4 I/ y, J0 C
(halted running of go)
3 q: f# ~2 q" j! T, d6 L1 g; o# R+ M' }6 E
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~9 _9 D, Q* a$ d
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* @, U4 z3 [; `
globals[. K4 S  n+ L  L9 Z* |) H$ z, g
xmax* {- ^7 N. s+ T9 N
ymax/ G6 |! U. c  K5 i9 z- @& |- G
global-reputation-list4 z/ U2 V% x" z( K% f

- @4 c! [) J! M6 Q4 G) j- O$ c+ ?;;
每一个turtle的全局声誉都存在此LIST
( @) S/ ]: w  Hcredibility-list
* h7 g8 Z5 M# k. I;;
每一个turtle的评价可信度
3 [& m3 W$ c2 v* J: J: f2 chonest-service7 I) G% m$ d, N. Y' P
unhonest-service+ F8 d! C; ?0 E2 B2 K
oscillation, l$ G7 U/ ^0 B9 L8 F# J
rand-dynamic2 S  Y9 p; Y* |. p8 |7 O
]
% R( r+ N7 J, U8 T, B. z( K" z1 g6 p$ F% T/ d5 A2 E# }0 Y- `
turtles-own[. [" g' }+ w$ a9 a( Z% I; E
trade-record-all
: Z2 a$ U4 J2 o( |;;a list of lists,
trade-record-one组成
: _  V5 e# K2 D+ X" ktrade-record-one
; l5 p9 W) \. w; m" c# F" N;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 Q2 W" O- ]5 s- c: u+ u
. Z2 ^* n6 V5 e9 E0 r;;[
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 a( Q* L  U+ \: k+ ~" B; Ktrade-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 ^) ~/ G2 `$ z" b' D& Vcredibility-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
. {3 i3 t& s& G' y4 D  Eneighbor-total
0 M% x; O  p7 t0 s+ d( N;;
记录该turtle的邻居节点的数目/ y* L# V" _. ?+ K( u
trade-time0 `% \# H4 [+ f8 V- D) Z% u3 L% q% V
;;
当前发生交易的turtle的交易时间
1 s& H& i7 @' b# |9 Y' wappraise-give
1 P7 L) Y( s3 Y5 K0 p& e;;
当前发生交易时给出的评价
( d/ V' G1 {0 iappraise-receive
4 {# u; b9 R1 ~& ]7 d4 b+ X" @;;
当前发生交易时收到的评价' U- a) L) |- d5 v& V' l  ~1 O
appraise-time) g7 @: e! F# r, M. M- i! z4 i+ I$ r
;;
当前发生交易时的评价时间! r+ g5 ~! `2 p5 B' ?- a
local-reputation-now;;此次交易后相对于对方turtle的局部声誉3 R  p' }3 T8 _5 h4 N- Z
trade-times-total
( I% M, e( _* \# F: J, W;;
与当前turtle的交易总次数2 Q: @/ r& I! K, i: L
trade-money-total
) \& j7 }3 G! |) [7 s;;
与当前turtle的交易总金额
, G, M% o: B' e* tlocal-reputation0 A% Y: s/ p; P' U0 u. c
global-reputation, C% G. A, m  I3 N; [
credibility
( c( T% i; x9 `! o% m7 F. s;;
评价可信度,每次交易后都需要更新$ ]( \  ?8 U( P+ o3 u. ~
credibility-all( w$ j8 }6 i% X* ~
;;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
" ?# Q8 l5 X2 K; E, X4 I+ P
; L# r% @0 N& v;;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; Z  v3 K8 M! D
credibility-one
7 F7 w8 D8 K; t;;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! u) m, ]) u- j( U* m8 M' e
global-proportion, ~  L, e% B6 Y& F; b9 R/ D
customer
( M. Y7 W' U) x0 u1 s- \5 l: m( @customer-no8 x! z* H9 ]3 e$ v+ X. J# p: S# q
trust-ok0 B; }8 h, t! V) O& \
trade-record-one-len;;trade-record-one的长度3 N) T. e/ a2 U/ L4 H
]
4 R% T! v; S  y
  `0 V# e* b! N. \& K;;setup procedure
9 `$ m# o6 k' w  P. l+ f: N  C$ v5 }$ W9 v9 _8 U% \
to setup& o5 x5 H: K% k' K; _1 L& l
4 P1 p0 k( t; c( d0 c9 I3 Q( X
ca
. D% c+ ~$ n# k& r

$ ^. x0 r7 I: C  Pinitialize-settings
5 a6 _8 s# B8 u$ C) \

! B, a8 y% E8 g8 u' H" A- |crt people [setup-turtles]

: L0 [1 p5 J. A5 ^, k
* t. l0 w, d% J2 K4 k- {& V- D5 hreset-timer

* x' N4 D- k7 n* B5 h  @
  u' f# W) c! wpoll-class

6 Y. S# J( k; C3 K, G, J* p- F4 M/ i! m  N; H% G: @. ^' W+ h% s
setup-plots
' Q" O- S4 ~  H/ O9 L
) Q1 k! j7 B1 h
do-plots
& h5 H: D% n2 u% x
end! k6 L$ j& S# A8 G3 p
$ }/ \4 p) x0 ~; s
to initialize-settings
% F: b& f+ T/ U6 u
+ J$ E# k# B& Z$ ?- Oset global-reputation-list []

- T, V# ], g# L. h. @- n% G8 A- {; E: ~6 J9 N
set credibility-list n-values people [0.5]
2 S( m  [8 r# B2 M+ k

1 A, p! ]8 @$ G6 W# Gset honest-service 0

: P/ C9 N4 G% ~! x! L
2 V( [. K) S. p! tset unhonest-service 0

  X$ T7 Y" ]5 ?' Z2 v7 D$ q5 n; s
set oscillation 0

1 R7 \6 P; J1 R. P' b4 v
0 K6 w6 v' A$ w  o8 y" aset rand-dynamic 0

$ @8 l* c. W. F. ~4 iend
" b$ v" w8 R( k" {4 U1 n6 r" p
5 }4 i' H% O9 y' i8 ato setup-turtles
0 j" ]; Q6 ~% U8 r5 i1 T# Oset shape "person"
% E6 B. q% I+ b; b  F* u, `setxy random-xcor random-ycor) H% Q# U# v# L' s% f, `( f) Y
set trade-record-one []/ d7 @; E# z' O- m4 S; m8 [
( q/ ?) Y  H: x* E8 u. M. z9 L
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 s1 z* i# |% w' U  |

- ]0 l% Q6 O" E( uset trade-record-current []% a$ S$ |+ R+ F$ B
set credibility-receive []% L; q3 T6 o8 l! S  a$ i3 h7 v
set local-reputation 0.5
8 `8 j& m& R. Y' k6 Y7 Xset neighbor-total 0' T9 w+ ^! x5 f/ S) ]# z6 O6 }+ d
set trade-times-total 0
6 ?$ I% B! ]7 Y7 A+ g7 ^* q$ Zset trade-money-total 0& o# I$ @/ k5 ]
set customer nobody4 J6 `) O  d# f% R
set credibility-all n-values people [creat-credibility]8 [! o: m  \. p" f
set credibility n-values people [-1]9 M" [, u1 Q  d$ M
get-color, _- z3 ~$ P5 L9 h6 _
) F. R5 @% p0 c: u4 u0 Q0 d
end( n" Z3 G+ J7 E

* M5 g% J$ P: H5 c, G1 Sto-report creat-credibility" y8 |; i  V% s0 t8 Y6 i
report n-values people [0.5]
7 f* t1 {; w" j. E2 W* |0 M0 p+ dend
$ h0 J3 }3 S# M* K6 W0 ?
0 k4 a+ z8 n; j$ f/ P0 _# q. W( Y/ Wto setup-plots
4 s% I  X% ^$ e- d0 q( b, e( u, r, ^. x8 t/ P
set xmax 30

& t& K3 E- l2 @- i9 y
$ @, N% z' s, P4 Fset ymax 1.0

% g) O* P& `: {/ W) |7 W  H1 L0 o$ U  V- H: A3 s! x
clear-all-plots

1 s8 @6 ?$ Z$ N% j8 N# s/ x! f8 E/ {. O" X' w6 z7 O  u' O
setup-plot1
# s$ Y# A+ J$ S( B' A

3 u: |' q3 A: p5 V+ J3 Jsetup-plot2
/ T# ^6 O3 D1 P: Z9 R9 p
5 E4 Q1 c+ Q; X; B
setup-plot3
, O6 {% H( z! V) n, q0 H
end( x" T1 W# M+ L" x, ]
6 Z) ~, b& ]: d% ?6 P, n' \+ [
;;run time procedures
: Z/ I6 }0 z: a+ b  o
4 T: C7 W& ^% E8 G1 e: @to go; Q* S- v" }3 w; q
9 Y- M. [4 z4 I$ k5 ~
ask turtles [do-business]
0 ]1 _$ E5 @- \
end* X6 w3 F3 `1 m) E! i3 E, e
/ X4 C0 p9 T) l
to do-business
  g7 n; t* x' Y7 C; @$ ^
" a+ }% S5 q) ]5 _
2 T3 ]- L+ W8 E- Y8 F% Z8 Y" V' G
rt random 360
+ u( V) N+ ?, D- v- `. Y) h6 m) B
8 K' f; K. y/ z4 |$ `" O2 @
fd 1
  D* l& O2 O0 X1 ~9 `2 q  A0 P

8 p! I# P- Q/ n9 O& aifelse(other turtles-here != nobody)[
8 M2 Y+ x" I% v, Y/ o! Q6 D9 _

% Q, D4 Z& G$ E6 y! `4 h9 v+ a8 vset customer one-of other turtles-here
2 P9 g0 J9 k( T+ g3 }6 l

$ N9 ^3 n( S1 U; Z& _, X7 p;; set [customer] of customer myself
/ I1 k* a: |' {( G& c3 V! J

5 T4 {' P: s0 `* \* ], c' }2 J# ?set [trade-record-one] of self item (([who] of customer) - 1); i6 I  S" g2 O0 ~* F
[trade-record-all]of self
: q5 q5 g& k5 j9 t$ b! x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 C6 }9 @: ?+ F0 N. f2 Q$ W
! C1 W- W9 {3 W  x# a+ x: yset [trade-record-one] of customer item (([who] of self) - 1)
4 k1 B2 O7 M; I* {, R' H: @* W8 r+ V[trade-record-all]of customer

9 j$ P$ B9 ]; I' |# K  B, R9 l9 p( x3 S0 f- d
set [trade-record-one-len] of self length [trade-record-one] of self
) [8 D9 ^; o( e2 C% l

0 e$ ~1 d+ O9 k; N4 @. ^3 u' wset trade-record-current( list (timer) (random money-upper-limit))
" ^  S, l" V( q4 O2 I" e

" Q$ H4 v2 i/ a; h3 h! Qask self [do-trust]) t8 k" O# Q; T
;;
先求ij的信任度' B( U: b: }* I: }) ]0 Q3 p. c

* ]' {4 `! Z, O6 O9 s7 Jif ([trust-ok] of self)( U; _1 E6 I$ I: r; s2 ~* A  e
;;
根据ij的信任度来决定是否与j进行交易[; ^/ @. Z' o, T" {
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 D! }1 l" G# H

' p8 T1 N. G% o2 {; Y% t  k( Z' h[
7 S8 P3 ]9 {5 D  P; [7 I
9 X8 o/ h, F8 f5 o4 P
do-trade

! I; b5 z; R4 y# z8 q; ?/ @; b6 `( r2 m9 r, |1 R/ q$ x  O
update-credibility-ijl

( ^4 \# a& f) o% ~6 O& n. B' ^0 X) u! v8 x1 c
update-credibility-list4 `- B9 W' a" G3 V9 f/ l

5 I; k8 K5 H' |6 [( I
* q! Q: j8 y3 N3 ~update-global-reputation-list

! f  D! J9 a, j0 W) {. i8 H! ?' G: m  W5 }$ `! M" f+ M
poll-class
0 P; q' K9 a+ ?: a* @+ e
# F6 H1 z5 H; a8 c* J
get-color

% {9 r% q# M/ s) z; d7 N8 F+ @, Y0 r* O# X' o
]]
* i- R; ^) W1 t3 f, @
& ]( x7 c. B1 ?6 y( _;;
如果所得的信任度满足条件,则进行交易* q$ O2 d0 Y2 @7 [  W1 z

; p7 s' g: @$ T$ z' j$ S[
$ K5 D7 e3 Z/ l' @

% E8 G! N( K& v5 b# N; u( frt random 360

  M" @3 w6 V- g6 |) n9 l' c( f6 ?1 D. f; {. Q" K, G
fd 1

/ V( }* M; B* z
% q% m0 ^0 Q- Q- e]

0 T- Q6 D1 I  j
2 l" {# X7 I+ K& h" Q5 eend

8 k7 R1 x) |7 s) X9 @$ ^) x  X4 \) E- z5 m8 w  X" V' ]
to do-trust
( K$ m* J( V* c; eset trust-ok False- A9 [6 W& w, d& `8 R

% g( _! A1 i9 s7 B4 r) Y" R; e
) w: F8 }4 E9 X, s( p/ M
let max-trade-times 0# r( D; D0 J2 W$ O8 o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, L1 r) C  P( S9 r8 g: |: H' ylet max-trade-money 0
4 E) U( @- R7 P# J# eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; r4 T0 H+ @  d! ?  Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ V, F, B, X7 q; e) A( h5 R

( l* \1 o* C2 W& G, v' ~
0 r) x1 ^2 N% [. a4 B0 x
get-global-proportion
! G8 e. V4 H7 T! @. i  l3 d0 Wlet trust-value
1 x1 k5 J, c2 e( Zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
) h8 S* g3 G9 h/ j/ Y* P5 E, `: P
if(trust-value > trade-trust-value)1 M1 k. n) N1 u# w: q
[set trust-ok true]/ R  x* Y$ u3 m3 s' d
end  I5 P: z1 Y+ t
% q( e  z2 p6 B9 X% l2 U4 q6 ~
to get-global-proportion
; C' g5 m0 v2 Gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ e" C3 t& P5 r! D6 o
[set global-proportion 0]
& L: U1 N' [) _  N& i7 m5 ^[let i 02 P9 O6 ^& j: M* ~+ K* q, A
let sum-money 09 g+ N% C$ J- V8 I/ `9 [) [& e5 ]/ Y
while[ i < people]
" b  a( s/ v# S+ R' O[: y' s# [9 \  M) B; L9 B
if( length (item i
* b9 B# ~. d2 Q% i7 b[trade-record-all] of customer) > 3 )
1 z: g5 i! e$ i& s' V
[
2 l) o% ?. m3 h* J) l5 W" \set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* V4 M, \3 }3 c4 E/ M6 \, V]$ b7 e+ a6 F* Z1 c9 y
]
' {( f8 A! a6 u6 ^let j 0
# A( K; \$ x/ U' ], Ulet note 0
2 `/ u) A: t  X- ?while[ j < people]
4 h* E& w/ P5 ~! R# w[. ]; f9 x: C0 y3 u5 ?4 E
if( length (item i8 S  ?) S) T. o6 \+ Y% L% C+ v
[trade-record-all] of customer) > 3 )
2 w" g& J5 `9 t! A
[
& k& Y7 h9 C+ h+ Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- s( l' C6 y7 h+ D3 [( D0 }
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& b5 u6 R$ E4 L$ a3 _- q$ ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 ?, B) _8 l$ z, e+ ~7 C" K]
& d$ W" K8 M+ P* i$ r1 r]
/ A; ]1 z" p& ^% N! U7 ~& h' Hset global-proportion note( H$ p. j1 S- @
]
1 B, f9 K2 a8 h0 I5 r$ bend
4 S1 O& T* ]- R8 x! j
: p4 D+ h% V$ T0 P0 Ato do-trade' L2 H# y3 q9 S' R, W( L
;;
这个过程实际上是给双方作出评价的过程
. E2 y3 N" K( n, t, o- k. Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 |! R2 T$ S; W5 }! }) v1 M; oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 u5 N: n9 U2 o% g, m0 T, T0 ?
set trade-record-current lput(timer) trade-record-current
; U, N* ?/ s3 H6 W5 }5 W, D;;
评价时间- ?+ ]6 i7 B5 P4 |/ c
ask myself [
1 J5 _/ x4 P; z$ [. n4 y) xupdate-local-reputation( Q/ ?  G$ ?) _
set trade-record-current lput([local-reputation] of myself) trade-record-current) }6 e3 s% f% U1 d: R* y$ Z" W
]$ n$ b7 A+ W6 E6 i$ c, k
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* S+ M/ ?* \7 O3 m
;;
将此次交易的记录加入到trade-record-one, u9 S1 r  J/ X" b+ o; d
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* z7 |* A  [- Ulet note (item 2 trade-record-current )
8 x. ]% y- s2 Tset trade-record-current
2 R. z: Z/ z( }  [* v* E5 Q(replace-item 2 trade-record-current (item 3 trade-record-current))

0 W4 N- ^$ ~5 u) I3 l7 P- f1 Fset trade-record-current
* P$ {, o$ `( Y  u(replace-item 3 trade-record-current note)5 ^. L) r; y; R2 E

5 }1 W5 h% d' m5 t% _% q$ ], `/ p
- F: ], T( z, f! e2 t4 J8 D& F
ask customer [
+ h9 j) ^8 g, q) S# n* |" V( R( ^6 iupdate-local-reputation
7 g! [/ i4 B, ?* {2 c" rset trade-record-current
: K/ i) @3 c2 u% n6 e. ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! Z% L0 e8 x* Y# j+ ?  B$ t
]7 f4 i; E1 h( N+ l/ D7 t

" s% X& w1 n6 P2 M- V7 \' {
& K3 y2 {8 h. {- |
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' U$ {2 f0 @0 ^1 e
* `8 d3 ]) f+ f/ G8 [5 m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 ^: p7 }4 X- X+ n. A; Z;;
将此次交易的记录加入到customertrade-record-all- j, U+ S/ q: \, \9 r; g# |
end. ~/ W# f& |4 y2 t& q, O+ }7 D

' Q0 ^, l- e. A  Xto update-local-reputation
( H& t2 A# |2 I1 S4 ]$ \% Iset [trade-record-one-len] of myself length [trade-record-one] of myself" K4 r6 |  ]" m* d: R
! c8 U2 ~* @; a2 F/ L

; }2 W% E/ q3 U- Y;;if [trade-record-one-len] of myself > 3
% _/ r6 Y, u; T4 |3 k' I! Z
update-neighbor-total
+ X- F  P. P/ ?2 }% r( y$ t0 I;;
更新邻居节点的数目,在此进行
" _) p7 ~# f$ ]+ g* ]- V" Dlet i 34 @' ^. S9 a5 m& C7 v) T% k; K; ~
let sum-time 0' M+ x# O: ^" p  _6 L
while[i < [trade-record-one-len] of myself]
6 V) ?& |% p5 d+ @[
  C& y( C' r* L- X3 Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! H5 Q. O5 @9 H+ |- o6 Gset i
7 ?# V0 d, R. Q6 p5 N; y; N- T4 I/ v( i + 1)

5 O+ n# U8 w- |% b1 L  W]8 U7 w; G4 r+ y" f( p% s! R
let j 3
4 y' e% p; f0 F! i; z! Y$ w" ?let sum-money 0- k0 N6 ?6 b7 w& a0 k( s) E! v
while[j < [trade-record-one-len] of myself]3 k" H/ e1 T. U. i) c  L% s
[
1 U+ K: F9 E7 v: o( @6 O1 ^9 G' `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)
) j0 D9 X+ c# ^& G4 Kset j. g$ P* z: m7 B- B) ?
( j + 1)

9 u' Q3 E6 ~0 F) n# B]* D+ e/ f; H8 I! T9 S7 I
let k 32 B4 U- |9 L) K  G6 G, w4 N
let power 0
  W" I4 K: z% G7 w1 M( dlet local 0
4 _4 I: G$ l8 R5 ~8 J; Xwhile [k <[trade-record-one-len] of myself]( w% i' k+ D' _7 j( ^+ H# o0 K* B5 J
[
7 T& Y2 N" T2 Q9 L! M: 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) - ]0 y: A" `  ~2 k9 C5 D, X
set k (k + 1)( S) }' z0 U5 Z# O' L' p. ^1 ^; a; t
]
7 h: ]% {7 D8 \, t! Mset [local-reputation] of myself (local)* K9 Z% m, e7 v& \
end
0 ^7 `$ Q4 [, B1 ^( d% J1 a* ^3 p  m/ S6 T9 R; t
to update-neighbor-total
2 E5 T. n7 H" Y0 S  g1 i3 \. E
) P/ \+ Y5 R& ?8 {% _3 I& k. ]1 @if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 d& I3 D- y; U$ \7 ]* _5 d4 Q& ^, T& j5 `3 l

. I9 [4 a) p; O; W- vend
: D6 ?6 M/ k( q; o7 F  c. G$ v
to update-credibility-ijl
7 Z+ x0 L2 U' |7 ]# p1 n" x  u7 \
$ B0 c# }/ |9 }/ o7 k( t8 I0 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。& X( x/ f" u+ t' t7 _: Z+ F
let l 0
5 Z9 t1 g2 [9 Z( c5 gwhile[ l < people ]
# z) d2 K# d7 {% J8 _0 x) N;;
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' T6 [. f- _
[' u! Q+ l9 D% o5 U  L4 ^; y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' T6 B7 _$ B: h8 D' M8 d
if (trade-record-one-j-l-len > 3)7 B, j$ v+ z- b) p, T
[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
: Y! `6 `! l# S: K, Z1 Dlet i 3
" h% ^6 p+ o: n; R) x% Ilet sum-time 0, i# I; @. W: L9 T0 Q
while[i < trade-record-one-len]; b" r$ X8 q4 B) @/ c5 e2 }( Z
[6 s" |9 E  k. Z( I1 `  R' X4 D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 p8 g6 o4 }3 r& u
set i; R" _8 u, |5 U
( i + 1)

" |5 r: P1 D( u2 j]
- D* E) u. s$ J3 i5 N7 @: Plet credibility-i-j-l 0* b' z. C# d1 f  {- ~
;;i
评价(jjl的评价)3 _7 k* g% y9 Z/ M1 p) m* u# A
let j 3
. A7 k" o8 v" A* V9 T7 mlet k 4
5 b6 t0 K3 g4 E, A/ [while[j < trade-record-one-len]3 r- U; d0 C' h* z6 p
[2 {7 [/ P- |/ H
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5 X* \2 G- m: _
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)! ?: V6 ]7 M# k# @+ A* f1 V! C7 i( b
set j
- g: z+ U( c1 k( U$ Q( j + 1)

3 q+ v. ]0 i+ {) B( ?2 A0 M1 u: q]9 V" c, b* ~$ J  a% @
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 ))% a# r1 D$ ^+ {* `6 P& ~5 O0 N: S
! p* Q0 o& l* O% {, m
* V$ x% P$ r5 L% }$ {( K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ l$ `. J9 e. L. l8 o;;
及时更新il的评价质量的评价7 u  ?; l3 y; J0 V% Z: B, B! Y2 {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 w- c0 I) T- Y. e( p0 E4 j! xset l (l + 1)
* W) U, U5 Y2 O/ w0 ]. W0 E2 J]/ \3 T) ?* B5 I
end7 `! K0 n' e9 U3 J2 r+ h1 d
9 W/ x, i" j; _) t  |
to update-credibility-list% A3 d+ {# W: L/ r
let i 0
: j. W3 }8 {3 G* zwhile[i < people]
3 L' Z" v9 N! v% h[
7 e8 p" L- t9 Y8 M' \let j 0; V! \3 l" D! D* k% }
let note 02 m+ K3 {+ \' e# i: L2 z
let k 0" r* j# @8 O, p/ x6 |/ X
;;
计作出过评价的邻居节点的数目9 Z/ {1 H; Q1 e9 B
while[j < people]
' s$ V/ Z. b: Y( v2 y[
  l( W/ s1 q! a; p; Iif (item j( [credibility] of turtle (i + 1)) != -1)4 _  H6 o2 _' R- j5 h- X
;;
判断是否给本turtle的评价质量做出过评价的节点
4 \- u" ~5 {0 T[set note (note + item j ([credibility]of turtle (i + 1)))
1 _4 L: j3 X7 h+ m( W;;*(exp (-(people - 2)))/(people - 2))]
; ^7 w9 X0 X4 A
set k (k + 1)
9 g. D, k: I3 c0 f2 _+ |]
5 j1 s5 z7 j7 g  O; l1 v" yset j (j + 1)# {; |. Z# j3 K5 Z3 R/ z5 e# t
]
; U4 j# W. g# s1 X$ _; w7 f1 c1 Eset note (note *(exp (- (1 / k)))/ k)8 \8 v) R8 N3 U  E- t; v$ t
set credibility-list (replace-item i credibility-list note): r. I" h; N3 {8 p
set i (i + 1)
' V, Q+ m- M: q6 G; Z0 k]/ w* v' _  v% m, V6 h* b( P+ V, ~& H
end
3 q+ A2 Z" R( o9 K* q, o
" V5 j  ]' U# }- a4 Rto update-global-reputation-list: B% P0 ~- J! p' }" ~( A
let j 0
4 ]5 |' z% n4 B1 e, ]( q2 ]while[j < people]$ w8 Y' d% f/ _* E; V, x. o
[4 E- h: A  X( E8 B
let new 0
+ G, ~; t' I& b, \- {# C;;
暂存新的一个全局声誉
1 v8 T+ M' ?: ulet i 0
6 k* ^" C9 e. ^! {8 `let sum-money 06 l5 W1 P- ?0 K/ c1 h
let credibility-money 0
1 e7 J  ^# X* z' pwhile [i < people]
6 P7 @7 n- s$ h[: k+ j0 \) I2 H" R8 `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 p5 o) ]( a7 x4 k* J; w* Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 l/ ?3 V  @% ]1 \, i- \2 q! r5 c
set i (i + 1)& O1 ]$ i: a- ?* ~8 e+ y
]
+ T( x3 V# Q0 |- O' O' W* klet k 0
& v9 g0 q9 u! G; g' i! q3 flet new1 08 C. ?4 t: C' }4 A
while [k < people]
* [* w) r2 [  J  P! d& W+ `3 c3 ?[! T, u# G" T  i% f0 j  _: A0 d
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)
6 ]; c" @0 R8 L, s% @! ]set k (k + 1)
4 b4 F4 A" `6 S2 z8 k  q]5 v: Y6 O, W4 \6 H3 c3 v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 Z% O7 B2 P0 F$ I# A& I
set global-reputation-list (replace-item j global-reputation-list new)
7 X3 M0 ^, q1 ?; J6 N, Yset j (j + 1)7 F: z" F0 G; ~6 t& W
]7 K- [$ e& R6 U# G5 K  Y
end% x4 N- m2 u! u: P9 i; S

8 |" F6 _% n7 t+ B2 C7 V) w# {6 [: m2 @% M- U1 B- I

( W8 Y2 `0 \4 b, r# jto get-color% E3 }& `8 f& b; {* A
0 ?$ F" k2 I1 L. H: }2 F
set color blue

$ [% {, u; z4 R8 [end4 E  i$ u/ N/ q2 Z) ]) U! z# k
% R# c( D2 E3 P# D/ D5 z
to poll-class
! v& Z. D6 b( {  tend; B+ P  `  E  q* e: E

2 A+ @1 Y2 \+ n' n" F7 V5 X+ u8 Wto setup-plot18 v" [1 x% ?! D0 {" d
! F; X* K# e5 A, V7 x
set-current-plot "Trends-of-Local-reputation"
. r! t. k, d+ h0 Q: f
$ j2 P+ s6 j- }1 V5 Q
set-plot-x-range 0 xmax

6 T$ J) }; Y% o4 B
6 g1 }& ~* Q  ~$ f' b) {5 iset-plot-y-range 0.0 ymax

* _5 w9 U% |1 ^* U0 O" ?$ b+ kend6 |4 z8 R0 U$ t, ?. ]

) \6 A0 a; D( Zto setup-plot2
5 v3 _. N/ \4 A6 P$ x4 y! }! u& m3 e9 G( J" w; f7 ?
set-current-plot "Trends-of-global-reputation"

3 _2 N! X/ j+ X( W. m9 P8 U6 ^; N: j
set-plot-x-range 0 xmax

' c# L+ L6 n: d$ ?( A. F3 v% n7 F" s6 C
set-plot-y-range 0.0 ymax
  k" ~5 C* I& \4 a
end
1 B& A+ l  f& x* D3 u$ |! Q: `( D$ ]" b0 ]
to setup-plot3: W! v' O6 Q' o0 X/ @
& M" }9 {1 n% G) f
set-current-plot "Trends-of-credibility"

! M% z8 W3 M2 ^; O! s+ X
4 Y- Q% Z3 _# @' W8 h2 T' l; Bset-plot-x-range 0 xmax

* J- r) Q) `7 j; q2 M9 l2 n7 G' W4 c: t
set-plot-y-range 0.0 ymax

+ `4 T% r7 `' ~* dend
& p  c; Q; s5 {" Q& b0 D7 b6 x
8 A1 G, V, o* t+ [# B( q7 n* Fto do-plots" u% C8 E! [! L' B  h
set-current-plot "Trends-of-Local-reputation"
! {- j: z) R( p1 ?$ `  fset-current-plot-pen "Honest service"
* J2 }* \, }/ B6 z9 G. c. M5 Hend
, ~5 b  s6 [( X0 T  z# r2 C% R* l
[ 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.+ T- Q* }6 g/ T$ k

; V% [& j6 i9 a: A0 F) w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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