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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:( `. |3 m; Y  j
to do-business # L9 R" J! T0 b$ q' x& i, l
rt random 360; }6 b( m" {: i+ r/ y2 D
fd 1
6 b0 L/ \; C/ n, m( m ifelse(other turtles-here != nobody)[
- F  s6 t( ]# W( [: f6 X3 p! H! Y9 R   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.
" `; G6 p3 i  H/ a  G* L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' b! s: t3 a* C! ~
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ F% X# z: L9 K- a
   set [trade-record-one-len] of self length [trade-record-one] of self) W' Q  Y0 y* p. j) I
   set trade-record-current( list (timer) (random money-upper-limit))
4 k0 m  J* @  s8 s- m
: U% h7 r2 R' T& {) g问题的提示如下:6 I* _" A" Q5 g/ l5 B

& W6 B" l& Q. Y) G/ xerror while turtle 50 running OF in procedure DO-BUSINESS- \& g+ Y3 g& ?5 f
  called by procedure GO5 [6 A& I' E/ V3 Y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ A! Z& h& m6 c" ?7 r
(halted running of go)
$ L0 B) M- D- y$ ^; _0 j. a
6 Z4 K* P" ?4 \$ M& K9 H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 {! y# L: N; `; l' 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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参与人数 1仿真币 +30 +2 收起 理由
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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$ q, e. f1 }2 ]
globals[
% `8 G" x+ ?. F5 y& u' t# Lxmax
" p' I. D& F9 ]9 `( Bymax
: \- O/ x* v5 E! Y7 ?0 M) G  Uglobal-reputation-list
- V8 X/ a: q3 B" N: A, ]
' L$ |6 C; B7 _: w2 @;;
每一个turtle的全局声誉都存在此LIST6 Y5 j/ `+ v) g+ ^% [( I% q+ b
credibility-list
5 o/ C5 `5 S% V* U+ M4 Y;;
每一个turtle的评价可信度8 Z7 f: X* @/ H
honest-service
# o% D1 X, N7 M1 O# {: H6 Tunhonest-service
2 x1 ^! y  t) \% `1 w+ {oscillation8 X8 M! U# I+ k7 k
rand-dynamic2 ~( y* ^5 T' K' m
]
' L1 ]4 F! v' ^& N1 |& p2 N, B0 Y+ e+ ^% B1 R
turtles-own[
4 ?( e9 H' V3 _; d0 e& a& D4 w0 Qtrade-record-all
  o5 ^2 K& \  X, A( \;;a list of lists,
trade-record-one组成$ K4 L% P- w3 t  Q  t  P6 `
trade-record-one
# c9 j5 b4 J! R: r0 i% _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. ?6 s0 u1 w& e5 c# Z* w+ p5 M8 l# M
! y9 W3 M% i( T# k  l4 n;;[
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]]
1 y6 |/ i& o; Btrade-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]
3 n: {' s5 ]) F4 C9 U5 C7 _1 z9 Ucredibility-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
) @. @: _) n! q( \neighbor-total
8 b" B/ t( i8 e, s" G  U0 C;;
记录该turtle的邻居节点的数目' o1 M' o0 W$ t, I1 a& k: j8 Z+ o
trade-time9 Q3 f: _4 |! V. O
;;
当前发生交易的turtle的交易时间
8 [0 {4 l, l4 {# o2 O( Rappraise-give
( `& c3 C/ b8 ?. e;;
当前发生交易时给出的评价
9 {1 }' a; l- ~/ W  ?# Cappraise-receive( G" C# O/ {) x9 U& @1 H0 D1 M& Y+ T
;;
当前发生交易时收到的评价( |3 q5 C% r# ~6 l
appraise-time" J  ^7 j; e" P" _
;;
当前发生交易时的评价时间
3 k1 `2 K8 m5 R* g- y, g8 }local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- z1 U; g- p) [% i9 Atrade-times-total
: }/ {& T% d5 n8 r9 t; };;
与当前turtle的交易总次数& e" b! P( L: f1 b. @8 z
trade-money-total
$ \; Z0 p$ U- e;;
与当前turtle的交易总金额( R( s- G; a) s2 X: I$ E+ q  _
local-reputation! L5 k* v% _  o: W0 ^/ q
global-reputation* A8 C( }5 `  `# L; \9 L" y
credibility
1 O! W: D' u; {, A, C5 Z& p8 R;;
评价可信度,每次交易后都需要更新6 v/ p: v' p: Y( m7 e% `# i
credibility-all# t& C6 L3 Z; |; w4 n4 q/ h: t: |
;;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
8 X3 I+ V* Y; y; D% [) u4 L; M( T6 d6 ^
;;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$ B8 \$ p  L% _9 d# c/ v5 @/ L; B/ D
credibility-one
& S9 s  s2 I9 B4 R6 ^# G2 T7 b;;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
2 r# U. m& W/ a: l- B1 }global-proportion
7 A2 t5 d. F  [) @' L* Z& ^4 Hcustomer' f3 T5 W- b- C  r* b; z
customer-no
8 m% S6 U8 R4 n4 j2 k) X6 ~trust-ok' \' h0 O2 d5 a6 S; R
trade-record-one-len;;trade-record-one的长度
- w5 F, W  j, c. K0 h- F6 r]& O& e# J( C5 v
% W$ ]7 V' M5 x+ [$ t6 v
;;setup procedure) L  Z% c  `4 L$ i: y3 }

: o5 [0 k( H) j# |4 S% v$ U% B! \to setup, X( n8 B: Z' F# M
2 ^1 R, a8 C4 z, P# E1 ~
ca
2 Y) b: C5 f3 g; H( d
: E: M# L5 a) l  z2 |+ |
initialize-settings

( I. |: P$ g' u) C& C, V
  O" m, k3 t! g% ?* Fcrt people [setup-turtles]
7 ~3 K. f* k( N" [$ ~6 D
7 H6 y9 W! M: ~2 o2 M4 K8 A( A
reset-timer
! C- w' K. x6 E8 W: C* K7 k+ @9 v/ I
; s+ S1 ~' U. j
poll-class
, R  l1 Z; o% |- v5 n

" e: O0 D# T2 E' b$ m9 J. Osetup-plots

8 C, k' n1 T; Y% a  U$ ?* k- [- j! s/ x2 k2 `* e- j# Y
do-plots
3 P6 _  Y8 f8 W& @: {
end8 Y8 w# O+ p3 c8 ?% L% ]& W1 n/ h
; L3 _. N+ A* g& b7 }6 T3 Z
to initialize-settings
7 t/ Q) [9 S  p5 S5 Q- c1 w& L# l+ l8 W& F% Y
set global-reputation-list []

7 R0 L1 H- i; B4 X8 ~5 p, U' t: s
4 |6 x* R' a# `  c2 r$ m: f4 Aset credibility-list n-values people [0.5]
; t3 ^5 n, v$ W' H
! R. ~7 V4 T) Q  r
set honest-service 0

2 _' t+ R: L& P* Z1 w4 o
3 R! Z4 o' `. d  Pset unhonest-service 0
- S5 I# r: x# U' ]

3 ?6 j) Q) h. n/ T1 H" f8 b$ Vset oscillation 0
* D' t3 C( \" F5 s5 o5 J" n3 f

3 \3 F0 [" {0 U) d! S9 y1 `. s2 Iset rand-dynamic 0
! E5 ?3 f/ L' @9 b) B
end
; r9 N& |& `. {# G" _* N- g" L: V
) T# S5 c5 |6 _+ B6 @) e& a7 nto setup-turtles
" a, S& T* h/ I2 m+ f  |' ^9 vset shape "person") K$ F- J4 q0 P
setxy random-xcor random-ycor
: z- i; g$ C  Tset trade-record-one []3 B8 c0 Z! H! l5 Z7 A9 o9 R

1 c* N! ~9 u9 u9 f8 s1 G) C/ ]set trade-record-all n-values people [(list (? + 1) 0 0)] / O" V7 ?+ i, ?

% W  A3 R# g/ qset trade-record-current []
; l4 q( x" C; }; Z6 Eset credibility-receive []2 c* V0 w: V- z# r) l  k& G
set local-reputation 0.5
  k: p5 X2 h! w6 nset neighbor-total 0! m( Q: x, [+ |7 k
set trade-times-total 00 [0 \6 l" L7 [9 d6 B7 q: k4 k
set trade-money-total 0! i9 T  I) y1 s/ K' ^0 j+ E" b
set customer nobody
, s0 P! C0 m( p( Yset credibility-all n-values people [creat-credibility]6 w& m$ l8 g$ Q& `) r( S
set credibility n-values people [-1]
  {8 |. z7 V, m' W  f  T+ sget-color
4 k/ Y3 b" v3 D6 R3 A7 G

9 K1 }/ d; {* U% z1 p9 v. p6 Xend* z8 q) h# i# C9 e% }- Y% T. w
" _5 h7 x0 @' z+ |! n1 v, l3 |' ?
to-report creat-credibility; G5 B" {  L: C+ h
report n-values people [0.5]  X0 U) t& O( l0 I6 R
end7 I4 K7 H" B8 P3 ?2 v

0 G" ~' R. A: I7 f) Lto setup-plots) U+ E  \: U* `; @0 n

% Y- V0 q' X% f/ [, ~set xmax 30
# l$ @& Q; J# G# r4 W
8 T7 w; _; U( R/ O2 w& y9 X
set ymax 1.0
1 u* F& q# f2 K! z2 t2 _/ q4 |
& D+ v$ |- |# D$ L
clear-all-plots
! F9 J0 a+ @  |, ~  o

) M8 }9 ~- S# a( r7 ^/ Asetup-plot1

, m3 U) w+ ~4 b4 r/ a/ m% W' R5 m0 f' Y& D: b6 k& J
setup-plot2

5 H( {+ C2 K  s6 R4 X  z$ i* I
6 w' F- W' L; C, Hsetup-plot3

& r  s+ T3 {4 M7 B  hend4 y0 H! g8 x0 f! c/ v9 i

$ G# F4 A) i# l2 Y$ [;;run time procedures
! Y5 o' e/ M6 Y* q* A
- [) N' O' d$ U) t3 `3 p2 s) Q$ O3 O4 Jto go, k/ [9 \! V7 B+ P
) n/ Q  [; E* {. `  r+ s& ^
ask turtles [do-business]

* ~9 L3 {4 C' E+ b( Tend( x# R  P0 ]* s3 l
7 C. R9 I5 Z( |& S5 i
to do-business - Y0 h+ ]* ?) S; m* b: [
7 a. Z1 l& m; n1 \4 R
$ l% k9 [* `/ }9 ?, M$ {; l
rt random 360
; B& F7 @9 i% }" K8 d" q
1 t, w  }6 y+ s# M
fd 1
! h' y+ s( j- C  t

1 ^2 V% Y, X' q, Z2 difelse(other turtles-here != nobody)[

0 _  }2 Z! M8 Z- o4 v' f4 i7 X& p- q4 [2 H) S0 K$ \( n
set customer one-of other turtles-here
. Z  z! Z9 ^. Q" m9 {- j  F: m) g

& C+ {' Y" j7 i;; set [customer] of customer myself
. R; _( L! C) Y1 T) d
' E" N0 f# G# M, n+ [/ P
set [trade-record-one] of self item (([who] of customer) - 1)
4 W" M- ?' l$ Y) ][trade-record-all]of self
; E4 v+ o- l2 i" b& q6 q# a! E* ^* i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! `3 }* M) ^' n) M4 `/ N

% ^5 r$ |5 O% g/ r; Sset [trade-record-one] of customer item (([who] of self) - 1)( T! _% ]' m5 s
[trade-record-all]of customer
3 y0 \* g" p: d4 }
+ {  F8 F2 S. G  U* V
set [trade-record-one-len] of self length [trade-record-one] of self
# h8 ~* |5 u1 I7 H- y1 z4 t

+ L& r0 y+ |7 I8 pset trade-record-current( list (timer) (random money-upper-limit))

5 B1 P  G+ z* R. `3 |" l. L! V2 U; D6 D9 G
ask self [do-trust]
! V. _& s: R! S6 r" J" U;;
先求ij的信任度/ e( f9 H% Q/ s: O

* e5 t- L0 W) qif ([trust-ok] of self). U1 {9 i: [) D8 V4 E4 ?1 b
;;
根据ij的信任度来决定是否与j进行交易[' T# z" _% P# j+ E0 z; N7 Y+ Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ s- v/ s: \  L3 Y% {" A4 ~. @

4 q+ Z3 ~" E0 v) B' _[
* K8 Q& c8 I+ x
4 b# |5 I% n" H9 y) W
do-trade
2 E9 e; }" ^  B+ \3 H7 P( ~

( i8 o; A8 H) Eupdate-credibility-ijl

! `' X# y, P: \! M% x+ o
- E3 S& O- i! {7 v; Oupdate-credibility-list
8 F  d  C9 _; I! Z  t0 }: _, h
% c) z0 r: M6 R& v0 i& X

0 m5 J2 K7 w0 u$ c1 H# Qupdate-global-reputation-list
6 Y3 @+ Q9 |" y8 O; B

! A, y/ f- r. Z. O9 apoll-class

% p. i% d' X5 I) E- B/ V' ]  q$ @& z
get-color

6 a3 C) C$ r! T* Z9 w' t
( H0 D  Y- ?# Z2 V) _5 |6 u+ b! w]]9 f, X' X5 i" v; [5 e+ z
' n, o- c/ B$ @% r, G5 g- G+ ^
;;
如果所得的信任度满足条件,则进行交易
' R% ^; A! y7 S7 z' j
, w3 d1 X; B, K9 c[

  ?, M+ ~- {( N# v: |( J3 r( o6 |# o% F4 }/ L
rt random 360
! l7 }  \9 K  t3 l+ q

0 m# Y5 A8 p3 @4 J/ i& w7 Rfd 1
1 C7 _- w% G* c5 b8 ^% `+ _& H

7 a  X6 N0 K4 R$ x$ \]
! H$ P8 h/ k% S9 u/ Q0 E
. X, F% Q$ p: w" ~+ u
end

" `! w- s6 c# _: d2 I# r' U) b
to do-trust
/ f; B. @$ |9 e$ _8 Aset trust-ok False  ]- Y! y2 V$ G. f
% ~: Y7 m) b% I. b: f
+ h- j) _9 Q. _
let max-trade-times 0+ m0 \- G. ~5 P. ^$ R( D$ v1 o- s
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 r) x9 ]1 }) y" w3 B5 K! h- U
let max-trade-money 0
1 o9 a0 x2 q' D4 Mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& D! o# s+ n: }* ?  {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 y6 W4 N1 f/ c' K4 o7 d
. k! A8 Y" r0 `% B2 c  u

* y' g$ H9 m5 F  Dget-global-proportion
2 p" _4 v. C7 t# |  u$ G$ k) {let trust-value
) C( {2 l7 N, E( h) q1 s3 D; r) z' Jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

+ \% e1 ]; b  eif(trust-value > trade-trust-value)
2 r# }: x; q% j8 t[set trust-ok true]( d6 p- n1 C. u- \; l
end
# a! V7 v8 h/ @, v
& p; l+ ]" m8 K9 ?to get-global-proportion
3 k3 `! \- N0 z: O6 H# u' z8 wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 `2 b+ l& q- g: Z% l5 _( F: Q[set global-proportion 0]; D1 E" S' \; H" w" ?( W; Q* }
[let i 0/ E2 ~7 A- L, S/ c7 X" ^
let sum-money 0
( B, C3 J! f3 I/ twhile[ i < people]3 V& Z, O2 P" N: d
[
) j' o  j8 h/ B2 D3 G9 t( K3 Aif( length (item i/ A0 P. Y& J4 N! Z2 G+ u
[trade-record-all] of customer) > 3 )

8 E) Q" ?! y/ l& z& h0 L5 {[& o" s* J5 b" H7 |3 g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( H1 N$ I2 w3 a- p]3 \! d* q* n- _. T
]$ {' S7 c; T) K" J( \
let j 0
. u4 z4 \$ e/ \let note 0/ s' m! f/ B2 d
while[ j < people]. |6 b3 d1 p$ f* z1 I  Y# K
[
3 H; G/ K: `7 W+ Sif( length (item i
6 S- {, t( k( Y; f2 V: }# P; x[trade-record-all] of customer) > 3 )

& ]1 k- a1 i6 c9 d8 T, P( _[
7 d7 i7 d, ^5 E' Fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) y+ S5 F7 X. y- u/ A& t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* P" i( _. {9 |9 t$ ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 u( }( b. u4 z2 M8 q- O6 h
]$ M0 f, Z3 X! L) s3 w4 Y
]
6 I$ R) |$ g* jset global-proportion note4 ~8 y) v$ u1 {
]
3 b3 ]3 V. ~6 Yend
) b+ v) C. T0 E- F6 v1 d# T3 C. q( z* X. r0 c2 c* u
to do-trade
3 V6 J- z" D+ ?' D;;
这个过程实际上是给双方作出评价的过程4 V0 R& u$ {1 q6 j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) I, w! X& s) s# z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 J; @3 g4 O, P3 J/ S9 F" nset trade-record-current lput(timer) trade-record-current
& D3 e  K- \' P% R;;
评价时间/ C0 W- h/ P4 C2 j4 W
ask myself [
- C! r$ o6 @# C8 xupdate-local-reputation
; j* @: b% O% v  D( O9 Xset trade-record-current lput([local-reputation] of myself) trade-record-current
- t: X& ~* g' k6 T/ q]% D  P0 z( s8 [* I) W% [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 f6 k+ y; T' W' w& W
;;
将此次交易的记录加入到trade-record-one. n) e) V& \' d, W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* n$ a! U8 z4 m, H' `, m1 wlet note (item 2 trade-record-current )/ M3 j4 K6 y  N' f% Y5 P2 H
set trade-record-current  d/ \; K4 _, `. r8 q& }
(replace-item 2 trade-record-current (item 3 trade-record-current))

& H4 o7 u3 A5 H9 ]$ Z3 Z0 cset trade-record-current& ~. s; L# b2 ?& L( _
(replace-item 3 trade-record-current note)& k7 _2 S3 S: R0 m# u% G: K0 {

4 A9 p$ h4 N' |8 ~7 |# ]

) x% ^3 }# n1 p% bask customer [2 M3 _7 h, e' f9 r  m
update-local-reputation; ^, K- T. O7 k( g$ F
set trade-record-current( T% ^7 s; r- @  B$ [8 w# e. |
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" e9 g# h6 j9 ^1 i' W7 M- p7 S" h
]
; j$ R, d! V0 S/ u+ w3 x7 e1 s6 v' H8 u2 A

# Y  F  z9 T" ?" B7 eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  y% m: t$ r  x$ Z

3 A/ ]/ z/ }. Y# W" t* Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. d) h. p  R% a: g3 {6 M" r;;
将此次交易的记录加入到customertrade-record-all2 x& p  Y* @: W  f
end
4 S$ ]! U! s- q/ r
; y5 z- {/ i4 D( rto update-local-reputation9 r7 R( F! J; t6 b
set [trade-record-one-len] of myself length [trade-record-one] of myself. S% U  ^% M% c2 m' P3 a

% w6 n- E/ p8 T, p4 F) h/ \/ M9 S- L( L* C  J" f
;;if [trade-record-one-len] of myself > 3
* o/ h) b5 r7 K- _  J4 ?- u
update-neighbor-total
: f0 G  x6 F6 p: M4 o7 o; k8 k;;
更新邻居节点的数目,在此进行& p7 b/ P& e' _8 ]5 ^
let i 3
# b2 t; C0 u1 p, V4 `: ?2 Nlet sum-time 0
' `* ~+ q' P6 l. o7 c9 _5 lwhile[i < [trade-record-one-len] of myself]+ S0 F) |! n, f
[' v1 R; D' G0 y0 G/ E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), Z+ `5 a  H3 C' Y0 G1 z' e: i
set i
: D- o+ E2 G/ q2 Y( i + 1)
6 K3 P( X+ d0 N& h7 g1 ]0 L0 W* Z
]$ H! f! X' C- v  c# _" V3 N; M
let j 39 X; Y" ~, K) h) K+ J1 F+ B
let sum-money 0
% Z) w; e0 b9 ~* B2 m" bwhile[j < [trade-record-one-len] of myself]
1 G# |+ H* E# }0 l; a# q[9 K7 |) s; D2 w8 q% j% `* q" W, U
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)
2 C4 t9 r5 ^% a9 ?set j
5 B# g5 \, |& p# A; m' g. W5 e( j + 1)

8 e7 k6 g! n: G- K5 f' b$ Q9 n]
2 G5 C% D1 Y1 Flet k 3! f7 \+ j5 v* F0 _
let power 0+ t; g1 `4 {) |8 l" s% l1 K
let local 0
) D! r+ B* |  g' i" s3 I# Iwhile [k <[trade-record-one-len] of myself]- g3 ]5 y6 B, }8 q0 L6 \# I* R- p0 E
[
* n1 x% s5 d/ v& u# x" T. qset 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)
8 N" D0 e% u$ M# Y& X% M3 Dset k (k + 1)) K1 w3 @  w' B
]
, [7 s! b8 S: i7 P# k0 uset [local-reputation] of myself (local)
, q2 j( q1 @( `* G1 a, S3 P" dend
5 v; B" B8 j# f' D# l/ Y
( p9 Z; c2 C' M! O3 L! qto update-neighbor-total' `/ c2 x- \! S$ L
% X9 \+ s$ x5 |3 J4 }6 q1 J2 v. x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) ]% _- o, B3 w9 n

5 o2 o% o& u* V2 l8 ?0 m+ W2 s% M

: v1 {+ e9 }0 v% e* ^6 Qend% o) _9 K5 `0 {' D' J4 `) m, M) A
% a" c3 O; S7 [! m! w& J+ h9 M0 N
to update-credibility-ijl
; Q: I  S3 Q. ~( C+ Y7 w1 }
( q# Q7 m9 o" B( `; M. O- f8 u" x;;
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( l5 S' }$ b0 M( s* N
let l 07 t5 b; y$ J7 p" e$ n% z7 [$ L
while[ l < people ]
. u) g# U, Q; H8 ~: k2 v;;
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' ?+ D4 o" x1 L4 i; _  N( w
[
) T. X, ^* o  g% jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 C" T* }* U- @- y3 w6 qif (trade-record-one-j-l-len > 3)+ I5 O4 Y# Z$ K
[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-one7 l# X7 Z% a" O, B/ v  x
let i 3
4 O, ?; C+ b" D9 Z+ Xlet sum-time 08 s; P0 e, a2 X$ _! ]$ \. R
while[i < trade-record-one-len]5 t: E4 {$ {& Z: J# k
[% h% X$ N- x( z) {  K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). K5 x0 ]0 O9 M! Z
set i! j8 b5 W& l# ^2 g9 u+ z7 D
( i + 1)

+ n" ?8 x$ v0 r+ b' D# p+ c: T]
& L4 u7 R  |! x( s1 ^$ olet credibility-i-j-l 0
# R' V" j( X/ I/ [;;i
评价(jjl的评价)' x6 d, H3 z, G
let j 3
7 L' H" j7 M# z" S1 L( jlet k 4! {2 H: I5 q3 H1 q  i. V
while[j < trade-record-one-len]% K3 {, u+ [# w* K$ }, a( z
[
5 C. X0 w( C" A8 N! H$ U' @1 Vwhile [((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9 t- g0 a2 Z1 d5 b& g. n8 q% H
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
. m. d* N! U/ U8 M1 {* \3 Eset j' K8 V+ c( r" s# e
( j + 1)
) e9 p+ f; B$ r$ n# E8 C: O- r& U
]! j$ J9 L( @8 f4 M
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 )): E" B: ^8 n5 @
0 {/ y( x/ n$ U/ V* J* e3 a2 K' ]2 Y
0 \4 I, b0 S4 s7 ~: S) J
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% \$ Y2 \+ G4 Q) s5 q
;;
及时更新il的评价质量的评价" y9 Q" Z  m0 h; d1 Z/ v
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 z! S* ?& @1 [  P# z2 }
set l (l + 1)
* X; u1 e: @: q) h]
+ t( D- l. w6 W* C) T2 u+ \. M* D& i! Tend
0 K  b# W2 |6 b) X& {
/ f: h+ M7 ]2 yto update-credibility-list
( z" b) l# K# {+ j0 |let i 0
; ~3 o* B# H2 H" Z  Cwhile[i < people]& i. [& w! }% p& p  b" W5 {9 G
[8 T' G$ _3 o# U2 y8 @9 W/ @
let j 0. j* D0 |) z3 x
let note 0
8 I5 a" H! F  T$ H( Q+ {! elet k 0" H/ o2 X: Q- Q$ j* F
;;
计作出过评价的邻居节点的数目4 t, h0 M9 K5 ], ~
while[j < people]
  P& d0 {9 d8 P: f[
% Z( k0 f- z6 a  q) E! U! \if (item j( [credibility] of turtle (i + 1)) != -1)6 {. }2 W0 [8 G9 d' B
;;
判断是否给本turtle的评价质量做出过评价的节点4 s: b/ Q. d# x
[set note (note + item j ([credibility]of turtle (i + 1)))
' q$ c+ `2 [, r; A4 l& [% X;;*(exp (-(people - 2)))/(people - 2))]

/ ], r! G, S# l' g6 q# V: _set k (k + 1)
( M2 u: c' }. ]' d, l: u9 Q7 |]
6 Q! Y8 @- _' ?8 c! x5 S4 Fset j (j + 1)
; I, a1 w* V0 B, w]
9 Z3 j) W5 b: y6 o6 xset note (note *(exp (- (1 / k)))/ k)
3 e" c; x4 n- A6 b: b% lset credibility-list (replace-item i credibility-list note)
( H9 E- k; ?; o. W% I( C' fset i (i + 1)
' O& U+ ~' G: w]
$ Z( x. v- r! ?  E9 f6 T, @* Oend
/ u; |3 A% V9 }7 }/ i, {% J0 Z8 J
$ i: H7 J6 X" W4 Kto update-global-reputation-list) N! K9 G) C2 X# M; V- E
let j 0$ _( L* c% g6 ~# u3 _5 d
while[j < people]
  Y$ G. ?: ^% G[( j' d& b, `$ S9 C! j
let new 00 X1 e3 y) I5 `: G
;;
暂存新的一个全局声誉. t- [, q6 `& U, w% }/ b
let i 0' l) q5 k; f/ w  M1 G& Y  p
let sum-money 0
2 ?4 f9 w( w4 m" p% ?let credibility-money 0
$ T) n1 M; `# W$ L3 Hwhile [i < people]
; J1 B8 l1 p, P0 a* J[
) @0 h" L2 e; J/ Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 S# X: C4 D8 N# M2 g- U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# u( ]7 t+ H* q/ a5 y# m+ L8 s7 tset i (i + 1). G. T8 _+ W! b5 m, A
]; o' W8 c6 |) }. i9 Q+ Y+ f
let k 07 t% ]) g7 f1 J6 x% `: N
let new1 0' S: g: k) x5 `6 g* t1 {# s
while [k < people]6 |* k2 L& n) F' V
[; q5 \& u" q$ }
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)+ S; q# l* J1 B" r$ q4 H6 _
set k (k + 1)
: f' \+ F, ^0 v# q- x* W]
- V! i& a, x4 j5 t% p# Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 o0 J) N: f: G, P/ i$ \
set global-reputation-list (replace-item j global-reputation-list new)
) Z; U+ ?  N; j; t" j+ Y  D$ e3 Fset j (j + 1)
* x! L; H5 |7 E! z! s, |# Z7 i  D]
- [4 v2 D6 E8 O7 V0 \end
  @( m  n) K* \+ w& j1 e) w# U0 c; K$ ~( M4 B4 g* b  k
, z2 W, c$ _0 C9 s1 u7 e) ~

, C2 S. N5 C/ c! k* A4 ~0 vto get-color
, h& n. ?, `' H( F4 W; J3 ?+ Q# _+ f* v$ R( P
set color blue

  P3 w+ _7 n8 `* A9 ?- F; V$ vend
+ P# c5 B6 \3 _, p) o$ M, k: [6 W) a
  U4 [% k4 b) i6 f# Fto poll-class
+ }9 N/ |. U% h! M2 O- S4 K4 send: t# q9 c% B. V% c/ a1 F

6 D6 g4 R  Y" ~. Eto setup-plot1* b6 }9 ?  i7 t
7 G+ r1 A: `& y  H$ T: |$ G* e6 @
set-current-plot "Trends-of-Local-reputation"

7 b$ e! ~, G" |& _
  [- ~7 w1 ~; s+ bset-plot-x-range 0 xmax

7 v3 u1 ^( }% ~2 W4 f0 `! a
& U6 v: E0 g7 [1 xset-plot-y-range 0.0 ymax
- R- u3 E- ?+ p/ P7 s
end
5 d& M9 o4 r7 p! O( {  B2 ?! F8 t- z) F) u
to setup-plot23 ~4 y/ q; z+ V+ A" w+ g# h& F
$ H- e1 ^$ p9 G! ^: Y/ \
set-current-plot "Trends-of-global-reputation"

/ }0 x' Q$ Q8 a6 @0 Z2 Z
! ?8 ^0 ^- X6 Vset-plot-x-range 0 xmax
( h4 ~7 S8 Q2 D! J7 T1 Y0 N

# E; h5 J4 i: Cset-plot-y-range 0.0 ymax
0 n8 m( x* A; J2 N2 f
end
5 W$ o8 m* g: O% Q- Y+ y3 A* \* C6 o' r* I% t. W; r0 ?: o( D9 m" K
to setup-plot32 Q6 {  r' q; o/ f4 J6 D

5 |! \% w( k& Iset-current-plot "Trends-of-credibility"

* o1 a  g  ?, z
8 X' Q5 s! {* {) ?# q) @# uset-plot-x-range 0 xmax

" t0 q7 u- ~! X& R, Q, v1 G2 ~/ d$ U  s1 \% d9 ]* j7 l* l! L8 x/ e
set-plot-y-range 0.0 ymax

( I0 O( O2 g1 T1 `9 z- C8 d# T$ iend
, v0 o3 Y  Q9 a5 i$ M; Y; q1 s8 A
( s( j- z9 [+ L; z- b5 pto do-plots% T0 _) h' d; Q+ K; U- S
set-current-plot "Trends-of-Local-reputation"
) d( \" D" t( H, s. l0 y; Iset-current-plot-pen "Honest service"6 N2 L/ L  s' L& \6 ^
end) ^8 w: y$ F$ E1 k' w, {: h2 s! L

% u! p/ C% Z. g, A. S[ 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.
+ I9 Q* a+ O# q  Y0 U3 s+ u8 M- e
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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