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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
4 _' I1 E/ W5 Q: O4 F- e1 g9 X- ~to do-business
8 M+ |' Q# t' F4 N5 v rt random 3604 Q2 M  t/ H3 M
fd 1
/ Q( G2 l: N, v9 A& C% H0 Y2 O ifelse(other turtles-here != nobody)[
0 f7 f  v0 D4 x+ s6 B" F   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.
% ?* ^9 N' a( z' H! F  _2 N- I   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : ~/ H; f6 w$ P1 }1 i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) M- T/ E2 H$ ?( Z. {   set [trade-record-one-len] of self length [trade-record-one] of self
  u( L0 i& f+ s' q! h& H   set trade-record-current( list (timer) (random money-upper-limit))/ {/ y2 H* q2 {1 {0 b: T! q/ C
& c, E) Q+ n+ ?( j- U
问题的提示如下:5 d% k* K# O. N' R4 v( `" m, e0 j
" c2 H& M4 g' @6 [2 S
error while turtle 50 running OF in procedure DO-BUSINESS
; f+ h) e6 m5 U! `5 T, ~  called by procedure GO
7 h- G$ x; M4 Z8 [! Y9 cOF expected input to be a turtle agentset or turtle but got NOBODY instead.4 L* {0 B, v- |: j" V8 K
(halted running of go)" R* L$ V' i" M0 u5 |* A
5 p  @( v3 ?0 O0 L1 n
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~~% ^8 r% V! W: N0 q5 |( a
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6 d; u# V1 r1 a5 R: y
globals[
2 Q# y  E, I6 M" s% Sxmax
" e! \' I2 U5 @) P7 ~7 e, symax9 J% b( i6 m) [' t
global-reputation-list$ f$ |: |$ `* B* f
9 ~! b4 J* r- B
;;
每一个turtle的全局声誉都存在此LIST# V2 p$ I* c' A, ?2 h4 w
credibility-list$ K& t2 e* x- B3 C
;;
每一个turtle的评价可信度) R0 o; P1 `0 R+ f
honest-service7 c# Y2 l% v" F7 s1 s: w  z
unhonest-service$ K8 f! ^5 E! i) ^* G
oscillation
% ]1 k1 q' e' C$ u; u3 J# trand-dynamic9 Z7 y& n: T3 a7 J$ \; k: U
]
: [* D6 Q/ X4 h' @( Z; Q
) Y8 W8 `, g. s5 d; q" N& yturtles-own[. y5 u8 m9 s4 K" C3 [
trade-record-all
2 o" Y' r3 p5 B) Q# i) B; [;;a list of lists,
trade-record-one组成
! [$ W* r* _! L% mtrade-record-one# ~$ p5 Z( c. _5 o! l- ]1 M2 Y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; D& B; g& t* M1 C: d: E  r; P

+ m4 M: m( g. o0 ^7 i1 B;;[
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]]- d6 I2 B6 N3 M" S- o1 O
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]
( l% p9 i# B$ [2 tcredibility-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
7 Q1 ]( ?; {+ q2 fneighbor-total: O( I6 ?4 i) Q% y5 F) u, o* k
;;
记录该turtle的邻居节点的数目- x! P0 F: |  f: q2 ]& M
trade-time
6 o. X1 G1 @* u+ f4 A/ Y; `;;
当前发生交易的turtle的交易时间6 Z8 y, C- \9 {  V
appraise-give
: C) D  C( E3 P8 K. |) M;;
当前发生交易时给出的评价+ B* P% U4 a/ {: M( Z/ r
appraise-receive
( P1 U1 f5 v1 |, k6 H;;
当前发生交易时收到的评价
( R7 w1 U+ E1 V0 O7 R/ ~6 x3 zappraise-time7 `% Q( G. L( P. U
;;
当前发生交易时的评价时间/ D9 J8 k) ^6 X6 }6 `) }: J
local-reputation-now;;此次交易后相对于对方turtle的局部声誉6 `/ U7 a$ R) v. E% ?
trade-times-total' M* S6 f4 n  p- Y4 }( d% i6 N" O% ~
;;
与当前turtle的交易总次数( V4 B% x8 K6 ^3 u+ P7 s- V) f
trade-money-total
% N  q  j: ]6 k9 j6 ~# U; U9 ];;
与当前turtle的交易总金额
8 T7 |8 I8 x( H* @1 @local-reputation
" b" _# f4 z0 b* H. k( Y& Mglobal-reputation
; t4 [7 I( i" R$ kcredibility
5 l+ K+ I- L  }2 u! `;;
评价可信度,每次交易后都需要更新% _/ k) D5 Q7 W3 M# e
credibility-all
- N  D( y9 u( g: g9 r;;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- }/ v: y( o6 h
# N. d0 H; t, E; I: W+ [: F
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.53 g/ d3 T# ]3 o$ R, g. K- \* `" k
credibility-one
) Z2 x6 s5 _; R;;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people1 E# W/ @3 S/ Z
global-proportion
* ?0 x1 O0 j8 Y7 Z: y. Ecustomer4 [) m5 o* r+ s. T
customer-no
! g' F2 r9 K9 A, f  T) Z: j5 t0 G( Jtrust-ok( X* i# ~* S. t' L: G
trade-record-one-len;;trade-record-one的长度% C8 a/ q: H, R1 A
]! w7 d1 p5 g" N, R( G' V/ D

& S5 O+ J+ k# j;;setup procedure
  W) j# j( u0 `7 b5 P  Y" v3 a4 D0 V2 d! J* f. A( b% E# Q- Q
to setup) u/ u# M" e! j& H# T

. E0 G* u+ E( p. h# g( D1 Gca
( P9 s: x, O4 U

/ x3 ]' V: o6 c" C# [! P9 zinitialize-settings

8 j% L8 M7 g7 o( A1 o- X0 q2 ~  g  v& Z" V3 p% _
crt people [setup-turtles]
# l6 _0 T6 C4 _* a7 i4 Z
4 r. t  h; |' F, b+ S
reset-timer

% L1 H* k6 N" O: W( a
( P& w. O) }1 `. U, z& M* e+ w/ qpoll-class
8 Y( m- U- Q1 |' K; [" Q
  v* m1 l' }0 a2 T
setup-plots

. R  u4 i+ r& v, a/ {5 r) Z
( `# L4 q6 C1 M" zdo-plots

6 N$ x/ |8 g* t. Z" S* z; P2 Mend+ V  B% E2 {$ a4 B; g/ q  d

( i# I' w6 |& n& z& n: f, vto initialize-settings
4 w. o- E0 w  A, Z( R+ i+ z: T7 @4 {- [9 C  j; d  b% e1 W- Z; P
set global-reputation-list []
- X! A2 f8 n. @( C1 y# x
, }8 l9 r' d2 g
set credibility-list n-values people [0.5]

" v+ i$ o: ^0 D6 [: z) M1 {
) |+ Y- S) R* r1 G) |+ g( B( {set honest-service 0

( O4 e" F$ C& g0 L  Y% o* f
1 d3 ]" }3 `& {- ]: C* {set unhonest-service 0

. p$ \8 Q, R  |3 [# R/ A8 j3 ]- o, s7 Z% d3 |
set oscillation 0

0 a* ]7 n/ m; W" ^
' ^3 J7 O) J! a% ~0 o" @/ _( w6 x8 yset rand-dynamic 0

& Q% S4 x  _' Y7 a. w1 W: uend
, t+ y! @) Z" t1 R0 K
2 E+ u' W  b2 a; t# N, Z( tto setup-turtles
  V" O6 B- K' @0 qset shape "person"
: Y$ f& _- L' Q+ s7 Z. csetxy random-xcor random-ycor9 n1 i5 H$ t5 O% @
set trade-record-one []4 h9 m7 U; [  f

: Y. {0 o) q0 D( |8 K' hset trade-record-all n-values people [(list (? + 1) 0 0)] 8 j) a# r8 C7 a1 D* J/ e2 U

5 t3 R& q3 J5 u$ S7 a6 sset trade-record-current []
, \# `5 Q% f- j! f6 e! Lset credibility-receive [], f& P$ L. V9 E! F
set local-reputation 0.55 d- d5 J) D1 L6 @- @0 E4 a% h, i
set neighbor-total 0
! B# D5 u: Q  l+ T+ J( ]+ f, Gset trade-times-total 0
( ^8 S0 d- C0 a4 m3 J: b# qset trade-money-total 0! _& ]7 ^8 A0 m2 n3 Q  G5 B5 ^
set customer nobody% J. v, D" r7 d+ f6 g1 W7 C
set credibility-all n-values people [creat-credibility]8 K: W+ \' b8 R. ^
set credibility n-values people [-1]
" n* l2 r' l' S4 Y4 [get-color  {6 D& v3 [% k3 i
, \& |0 k1 t( Y! l6 e! H
end
: z" l7 |  b& O; q- A1 P, |0 }8 ]- f! S8 f1 k" z) P
to-report creat-credibility) M3 S8 v; L/ ?& c, g
report n-values people [0.5]
$ B# s; h' M" V/ k8 @end
9 C. m  n$ K1 X) `( o/ j
' I1 R3 \; T, fto setup-plots1 G, D( E" K7 m) k& p

$ O4 S9 Y9 ~2 r4 \set xmax 30

( V+ B. K* m2 J2 m! B2 r( q$ }+ B1 r
; I) ?8 G% f+ u" Jset ymax 1.0

0 e3 I0 B. I! U+ Y) C! z. E( P! w, _) W$ n$ d/ T/ D2 E
clear-all-plots

& [0 v3 p* [- ^3 B
- w1 f$ s7 r3 M* [setup-plot1
, \/ {6 i. V  T) g+ @  a$ G( J  k+ [
4 `4 _5 [( h0 O! ]) K
setup-plot2

8 U& j6 Y2 m& l. c8 {; w5 R3 E, v
+ u% f3 Y, p6 Y, u0 v- O, Hsetup-plot3

1 y4 w5 D- ?& I) Send: g" T4 }- N5 L" w; d# h
4 e# }! Z0 A! m- Z8 O
;;run time procedures
% f; R" Y& u) S+ B8 e
2 i& Z! V  S- m% m6 tto go
3 {' u- ~9 N* c7 B9 w, O
8 X6 @+ J0 h3 z! \6 m8 Cask turtles [do-business]

& U, P) U! i  |! l, O/ Wend
4 }2 e2 l5 F+ b% Q8 D* `8 F6 K7 |; x8 n
to do-business ; M8 |3 Y' V5 S( e& L2 S

1 n6 R8 _) A0 G, O7 I! A" J% g: ]  Z! @7 K! Z& N
rt random 360
2 C+ L5 J3 {  H: z1 z
' W- F  V1 N4 ^  \  {" P
fd 1

# X/ b9 ]/ w$ B1 o7 r
! g- f, Y' @% a0 e: z; D1 w) b0 eifelse(other turtles-here != nobody)[

( m% Q7 {$ D( N( S3 g* `; \0 M( T* W- q3 c1 ?/ y/ K
set customer one-of other turtles-here
7 H- [. |" ^; q- s% X* O
, l) @) R" I" ~  L; ~
;; set [customer] of customer myself

" F2 d! V$ h  S/ H: ]- C% ^3 b, S; g5 |0 q3 b9 L  K0 }3 l' ]" y& Z) P
set [trade-record-one] of self item (([who] of customer) - 1)+ X. f1 z$ R( ?  r
[trade-record-all]of self
7 D4 g) i. h' `2 ?0 |  }9 I  F' J;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 p3 R# p" T8 t9 o8 N

# D3 @* [- O1 L) ~; J4 X/ ~  Iset [trade-record-one] of customer item (([who] of self) - 1), a! h0 @1 }9 J/ L' n
[trade-record-all]of customer

% g# |4 m/ {+ M" D# c) R9 v7 A) x8 Q1 n5 h7 S6 e0 Z0 h
set [trade-record-one-len] of self length [trade-record-one] of self
( L8 r9 m2 c: e! S0 q! c1 b' @+ X
! W* A8 I2 j7 h, D2 U8 Z! v
set trade-record-current( list (timer) (random money-upper-limit))

+ U+ C& r, h, b$ R2 ]7 q7 D( d; L$ r/ N, P
ask self [do-trust]1 I. l; f  M: n( D: v+ U( L; ~
;;
先求ij的信任度
- K; k1 B1 A" a, d# l
  A5 S/ \/ r' I1 b( Jif ([trust-ok] of self)" {. j8 |2 Y+ t/ }4 {
;;
根据ij的信任度来决定是否与j进行交易[
( \6 ]3 p7 {* nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 s+ Z4 i! F1 E: g; O% s  D' V" L$ N

5 e" i% b$ Y, I* `6 p[
0 [. Z8 b/ `7 n: N6 W) ^7 }: P  H

. A% y- w9 O! tdo-trade

9 }; q9 I! ]+ C- I! o/ @2 y. P: F1 K, F
update-credibility-ijl

2 d! _! B2 Z  z. c# |
# U6 i1 n( k' o5 g. Z8 S7 c+ L. [) mupdate-credibility-list
# Z. M3 z9 n% q2 L% e( N
) q' R, n+ }- o' _- r8 I$ z% V, R& c
8 g+ ^4 D8 O- p/ F$ [
update-global-reputation-list

" z1 M% x  E. R4 y  v! U. a  x! B7 F; D/ M5 s2 H  e0 u7 x
poll-class

$ V/ h+ t: K' [' d+ C, S! x
# E  Y8 r5 a  X% ?9 Y* B: z" mget-color

" ^$ c& h3 X5 Q% r& ]7 v$ n3 W2 D7 V% ]6 ^
]]
! S/ w. s  r- S! |
8 ], `, m; T$ h  L4 x2 Q;;
如果所得的信任度满足条件,则进行交易% ?; z& y1 P8 [5 v3 X9 Y" z

1 i8 G' `7 r) l; |- u- z* @[
5 x$ m* r9 I) O" _% B

( |# X. l- ^) r  srt random 360
4 Q" S! Z5 g- D: ~$ {

% p& k; m3 N0 `% g2 gfd 1

# J: b9 W6 N9 `& _; o
6 n9 E; C8 i1 \  ~+ d( n]

5 q2 b+ |) d4 I" n: x) C6 `
( a7 x/ t& T( P/ U1 Tend
  g" Z6 _4 K- F7 F6 J9 S

. N" A3 Z7 h, D. k( ato do-trust ( b+ L5 I  G$ w
set trust-ok False2 L2 W' W7 t# V. C* l+ s. i
- q1 ^; `3 g3 V# L  s  n1 l4 l
. _9 E- t6 o, u9 `  \9 u/ e( n* h& |
let max-trade-times 0
' S& F" K, u) q9 b( ~1 Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! I6 i3 e" X2 ^+ W9 J, }let max-trade-money 0
; e3 W/ k0 f0 c5 w: Gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& J: C# K) N# m7 C- h) O2 clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% Q  `. D" I* x( h7 a" q1 P: c- o) @" Z
9 z) K) C! n2 V9 `: e  H
get-global-proportion
5 ]3 B( N3 ^( xlet trust-value
$ i+ _& ^, n8 T1 N, vlocal-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 _! j, q6 D5 U4 P
if(trust-value > trade-trust-value)* X4 d6 u. |6 h$ _0 a, |- i
[set trust-ok true]
! n3 U6 A8 s& @% B5 h9 xend
+ P3 ?1 N; {4 v- n  m; m, L% b% K1 ~0 y( f
to get-global-proportion: J& x  v3 l* S( I, S
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 x# [' X9 h, X+ S5 E: R
[set global-proportion 0]
$ R3 h9 s# ?; r  J8 C[let i 0& q' Q1 w( M! n4 h6 ?
let sum-money 0: W% O- a, e9 G% R+ l2 w
while[ i < people]
' W( x) n2 N  s/ e[4 e' d7 ?: g2 M) g# ~
if( length (item i
1 e( i2 f" S0 F9 L8 o% G[trade-record-all] of customer) > 3 )
- S9 Z2 L( Q3 L
[8 V7 \) ^4 Z" z( i6 P! ~% r$ O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), w8 G# [, J& d) @
]8 T5 n9 A' y* Z
]
" [" D+ r* ]2 X) {* V! Clet j 00 R! K/ R$ ?& r8 A0 b
let note 02 E5 I. s. C5 _7 |
while[ j < people]
2 g9 H2 ?& P, p9 i9 D) t9 _[
1 H1 R( l2 K& |- D( \( uif( length (item i& M, a; C6 L/ y- P8 \$ ^
[trade-record-all] of customer) > 3 )

: s. c, J3 \/ G4 F, }[
7 D& s0 l8 c7 w1 m; N6 D3 Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# G) @$ b" s2 t6 W, X0 ?) T4 w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 D' F  m) a+ w% ^) e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# y/ o$ w* ^5 G+ z7 i]2 h3 y7 r1 f2 m4 ~8 K% S. _
]
! Z: {# K$ }  L4 o8 Sset global-proportion note3 p; `5 |+ n1 ?/ u4 }* W/ D$ N
]
5 g6 P; y2 D' n& i" Pend% g. F, Z: [* W9 A

. K8 R9 ^# f: @' v( J* R2 Z2 Bto do-trade; K: B. ?4 I* L9 R7 V7 V7 l
;;
这个过程实际上是给双方作出评价的过程9 C% q9 W/ M5 ?6 x/ J$ b1 V' p5 |9 ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ @2 d4 N1 ^0 ^& w/ h0 X4 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% m2 _5 \! W( |  p9 A- G, N4 iset trade-record-current lput(timer) trade-record-current$ e3 i7 q/ I- P) V2 t
;;
评价时间
9 M0 t+ w& t4 L+ \  pask myself [8 `5 a2 u/ ~2 z) P
update-local-reputation
8 \/ }8 I  X! p& I9 X& Hset trade-record-current lput([local-reputation] of myself) trade-record-current
# J5 T  \: ~5 I; K4 A4 |  m" V]) T7 R" U: O& T+ D( ~& m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 E) q) f5 }5 W  d: K) Q;;
将此次交易的记录加入到trade-record-one4 g7 M8 f2 l9 D. h- u
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 V3 k/ P, X" Wlet note (item 2 trade-record-current )) _, o! Q  j. A; P6 x
set trade-record-current
. ^# c0 Q+ ~* H; X1 ?(replace-item 2 trade-record-current (item 3 trade-record-current))
6 P8 }, c( I8 m
set trade-record-current
; h2 Q9 F; E  b1 M& _(replace-item 3 trade-record-current note)
8 c" _  v. s" ?4 v+ G" Y) G) H+ e& P0 M8 a6 X7 g8 j8 m0 u2 z% ^

3 H# [6 ]8 N& x0 X# ~/ Y% @ask customer [" j% ^, |. ~0 d2 X. M7 R! `
update-local-reputation  z9 N. B! J1 x( s. @4 A
set trade-record-current
" @$ W: B$ w+ @8 U3 O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! X4 M% x# A  A% }+ i
]
: K( b# J6 w, V0 W. ~5 s$ @" I" t& q4 v% v
5 N# C. G! u+ e9 x. w6 \/ a# A
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' M# Z$ i% Z0 r( h3 _, c" a

$ X2 N+ b7 {( q; r- nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 _4 ~4 [% i2 g2 n2 f) ~# L;;
将此次交易的记录加入到customertrade-record-all3 z3 D8 ~$ I+ K6 h1 U0 @0 u3 w. C1 ?
end, G- \, b" r+ m9 ~8 K6 J

5 @  A' q/ U- H- nto update-local-reputation: I2 W7 U( {1 T
set [trade-record-one-len] of myself length [trade-record-one] of myself# {/ G" _( T1 p5 c7 c$ N7 O
3 ~# ?. N7 _0 e! e: z$ r8 n
8 F+ ?" Q9 m7 O* {' c
;;if [trade-record-one-len] of myself > 3

2 o/ Z0 m) m4 X% f3 xupdate-neighbor-total: ]" [0 _# a- ]% w
;;
更新邻居节点的数目,在此进行+ d$ I/ O' e/ |8 f4 I4 w
let i 3
& v: R! C+ m/ h5 G, j. glet sum-time 0
2 t2 J4 \) N  w. D/ q) q; k3 Lwhile[i < [trade-record-one-len] of myself]% ]( l$ P$ ]$ G  `" J
[  \$ q* g9 @) `
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 q3 W6 _, v' H# l: F
set i
( J0 H$ o: _. L! E! b( i + 1)

) [  W3 U* z  m1 R9 X1 b]
8 J2 `/ P6 g7 `% elet j 3* Z; u# `: Z4 p9 @
let sum-money 0
0 p0 ?: Z8 r% S+ s+ [while[j < [trade-record-one-len] of myself]
5 G2 B- ?0 |8 G6 G2 u0 D[2 S/ U% ^+ X3 @& t1 i& d
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)6 P7 M  m) }8 U! H: u# M4 ~
set j
6 f- {  D& R  A/ w4 d; @( j + 1)

3 t! h5 ~/ ?- n% z; H: G]
% ^: N4 l) J# \let k 3
! v5 x: A) w& r# \7 Glet power 0
5 Z; w) e% F! t6 ^/ A0 a- y4 klet local 0
; e+ a8 Q. }/ M$ D# B; O6 a5 Vwhile [k <[trade-record-one-len] of myself]( u- G1 T7 Q: v3 S: @- |
[+ m0 m) g! p) l8 x( }1 v6 r2 d
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
9 ?! j/ w0 S# V5 Z8 V. N! }" vset k (k + 1)
4 u" k1 m, q, Y]5 i4 X/ z$ |. k/ z1 S- @4 b' Q  E  P
set [local-reputation] of myself (local): E, P" d) n3 b9 H: U
end
! m7 y6 Y/ N/ q) r) H
. U, b+ W: k7 B4 s9 M; ]3 dto update-neighbor-total7 [4 d) Y! R- D1 f

# y1 c5 F+ a0 i+ I4 {. kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 {8 D1 r0 ]1 p4 ]" I' k: k+ Y, f
4 A4 B! ?5 ]$ J! b4 f! N7 l1 |
- q$ ^6 V& Y9 q, I, F
end- \# u2 g. e2 W- B+ y
% I* g- P' P* g+ a. J' B; y" w
to update-credibility-ijl
$ x' \% I3 q5 {: V4 C1 Y5 I3 _0 o: n; `0 O; 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。# ]- p. ~( Z4 ^2 j$ p& ?
let l 0
/ \0 t4 c9 k; D5 }7 hwhile[ l < people ]+ r+ _* I# p3 `% 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. a0 V/ I2 `5 ^& ^
[- y7 S8 D3 |6 i4 _% |
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! T) t* `6 p" E9 A1 ?  T. _if (trade-record-one-j-l-len > 3)9 [4 Y+ d" r5 r8 o- k! a6 z& b
[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" {  T" z- l' C$ Z" L! p5 L
let i 3
0 b/ R5 f: U/ w4 Y4 xlet sum-time 09 I! q4 y+ k; {0 Y
while[i < trade-record-one-len]) j; a. E% q* Z8 K& k& @
[- O# f; ?& }8 y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 I8 ]7 S  Z6 p
set i
2 H2 v& U- L1 k+ ?1 F( i + 1)

  e& U) j2 h9 B, N9 O]- x6 z1 p0 u3 _) }: M: ~) b  H
let credibility-i-j-l 0
! D9 j! m/ g5 l/ q4 m) V;;i
评价(jjl的评价)
  h; ?2 b7 X. V( }let j 30 \' N/ h# e! h/ l2 I6 v3 R3 n
let k 4
" X( E1 I' i8 D- ~while[j < trade-record-one-len]1 Q. }, L1 `7 w' m+ j7 S
[/ ~# h; G! s( _! N& Y. |! I1 N& x' t# 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
* {  Y% P8 r! X2 sset 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)4 x# S: w# E6 {6 m
set j' l4 E, ~& L: h, v
( j + 1)
$ e# H5 M' s0 B/ c3 X, ^0 V
]5 A0 d. P1 o3 U
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 ))( v, ?, d& \- I/ N% A8 H( [$ D

) ]' s  J3 P, v! T# }  W, O
' D& |' x6 G( K7 M8 c0 J
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 G: M9 }/ s5 y+ m
;;
及时更新il的评价质量的评价
0 L; a! [, e6 yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 ]& K" J6 E2 T# nset l (l + 1)
4 C9 E; @2 ^3 _. ]]
% A' f; {$ I4 _end) J9 c& V  x6 Q( U0 {
% G, |/ `4 \! G' a
to update-credibility-list, K% o. r9 F7 X
let i 0
' l/ P6 z1 o3 K) l: nwhile[i < people]
; y( |- ^: C; P6 b, |[
- @* q" ]9 f- W9 ]9 ]let j 0
6 x3 R2 |7 j4 l2 L. D8 |4 x5 E, }, plet note 0/ t. @  D* o  h* b) ~# U
let k 07 n/ s4 U& D0 N8 M& R2 I( S
;;
计作出过评价的邻居节点的数目+ k. k2 b% N5 \' W6 v& Q5 I
while[j < people]- P% v8 I: T" `6 l' `  E1 O
[
- j, B1 m/ r5 E% n$ i* i9 X  qif (item j( [credibility] of turtle (i + 1)) != -1)% H% c% J. B6 D, S, `' U6 b+ C
;;
判断是否给本turtle的评价质量做出过评价的节点, T) ]3 L; d8 r* T8 I5 W
[set note (note + item j ([credibility]of turtle (i + 1)))+ ?; P% j5 z. a# j
;;*(exp (-(people - 2)))/(people - 2))]
3 k" L) n' ]1 t5 V
set k (k + 1)
) X( A9 e- H( h/ e# t]# ~9 `( R$ W. _. X$ u
set j (j + 1)8 `$ M2 H/ E6 {6 o4 O9 \  x* {
]+ W& ]1 C7 x- b+ C' [
set note (note *(exp (- (1 / k)))/ k)9 Q8 y9 L0 _: @5 A0 W2 Z/ G, b
set credibility-list (replace-item i credibility-list note)
% B+ n% l, m+ }0 |# ?2 l1 W4 tset i (i + 1)
3 Y' B+ ?5 K. h( F) l9 ^3 I: i]0 c; s) m2 ], B8 \- |% `
end
5 E3 t9 J/ E! J
6 v0 O/ }0 }% {1 j$ P; oto update-global-reputation-list
, D$ p+ t5 ?# t3 f9 hlet j 0
, X5 U5 T2 z- u5 n  ]while[j < people]
' ]" ]1 {. u$ l! m4 M. o; ?4 O# C[
% w3 h- @/ @5 f" r* P& d& Clet new 04 V& ~; V+ S9 T; Y2 T7 j( a
;;
暂存新的一个全局声誉% d) o" l# i# y1 c# H4 ^
let i 0
/ Q  _3 k5 T+ d- i6 g( Llet sum-money 0! t( r4 }, a/ @: G
let credibility-money 0) i' S3 i3 ?  X/ f# g) z" ]/ A7 }
while [i < people]
' E& ~" l) m+ E& g  l8 ?[
- T3 s5 I8 A5 z1 dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 _# h/ k5 b* ^6 m. n$ d0 j7 |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 g& g& K- |5 u) {
set i (i + 1)
+ @6 _) R9 ^8 o% r]
# u7 V/ _0 k9 }let k 0; g4 e- U7 {; l
let new1 0
  ?& ?8 h' u" Y+ m& b- Qwhile [k < people]
: a! J2 g- s( R) ~" b* w+ N[
% i# I* B7 C9 Y9 P" A) l7 Q* Oset 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)
8 t& k6 M. h7 r* K! Q3 Gset k (k + 1)
) A. I! F; n! T) @2 j( N]
$ s" E/ w+ ]3 Xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 W1 v" ^4 E# q  zset global-reputation-list (replace-item j global-reputation-list new)* X- l8 L6 U, H: T- Z% ^6 d
set j (j + 1)$ g6 l  C% P3 G
]- n. C# \+ P2 y$ H% p3 a
end
0 e3 i1 L( a7 g, w) R- u' Z0 L1 f- g/ ~* a2 a
1 U6 N4 x: f( X# X& g) o

5 z# ]' [/ [, Q0 I2 t; ?, tto get-color
- k4 c& Y# J, t7 E  s/ `
! P7 o5 u2 N) O  a, D' Bset color blue
6 J+ i4 S" t* [$ y9 w/ I3 `, W% n6 a
end
3 L1 T( F& n! D: ~8 c
: d6 y! ]) E6 R' {to poll-class
- ]9 k* Z5 a, u7 u4 W+ q$ }" Kend
/ y* f$ E3 M0 i4 i
% B7 c2 E. K* b! D8 \to setup-plot1
; s9 V" P2 D) `) n3 \, M8 A, ]# J
8 ?! u' H+ h/ B% v+ t  Dset-current-plot "Trends-of-Local-reputation"
7 c. F* z, O& @) t; X. e4 S0 j

" B0 V0 g7 f  oset-plot-x-range 0 xmax
, O: ?; v! J' j+ M# H. K% \

4 l) c' Q' x) x  Rset-plot-y-range 0.0 ymax

6 v$ x6 _# L/ ^5 E2 I4 r$ Wend" c6 k, E  y6 h  z
$ V0 J% P% q# C5 G3 ~1 {
to setup-plot2
. K1 _4 R) s- X8 o- H3 x; k; m1 ^! u6 L3 [2 i# o
set-current-plot "Trends-of-global-reputation"

" `8 F0 p! M$ g+ ]3 L- B- r+ x" o1 ?+ [# x! _& m5 e% O% O
set-plot-x-range 0 xmax

5 e' Y: d0 [! N, \0 l1 S4 i& Q
9 C: t9 v0 }$ r( \  j! aset-plot-y-range 0.0 ymax

- N! ]! U& Z  O+ cend
) U( B& C/ s$ o7 y" x9 R4 p* m+ s- j) G
to setup-plot3
/ i- T1 Y. B, R% e' O4 M# g
, w" o/ p: h# }2 \+ ]6 M8 aset-current-plot "Trends-of-credibility"

7 F: y) v" U/ F8 `, @7 e. s. M: ~
3 U& O7 q; H# P2 Dset-plot-x-range 0 xmax

( x% Z: h" I  ?+ k! b
' O1 Z' |. d' y& u6 L. Vset-plot-y-range 0.0 ymax

6 E0 V& R% l' V3 vend' S$ M! d; E* r

2 P* Y5 ]2 M3 y3 i& {, U* W; Eto do-plots0 |6 A8 C7 I* I+ ~7 t3 l) g7 ^1 p7 q
set-current-plot "Trends-of-Local-reputation"
7 U) T, l; [% Y6 S' l4 Iset-current-plot-pen "Honest service"
( t. u: x& ?. ^end, k$ }( Q- d3 M) C5 V

% X( M3 u2 S! @, A* k[ 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.
' a& ?0 W; W  B1 O1 B( ]5 C7 @, g; l7 Q) c
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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