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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:( W5 j* Z7 ~. P1 z. o1 M  s( _4 [
to do-business
7 h, O1 p7 D5 l. x rt random 360
$ V0 G* z& N. L fd 15 |" e3 {. e' Y4 p
ifelse(other turtles-here != nobody)[
5 k4 l/ m: w1 H$ }; Y   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.2 o6 z0 m5 p! c0 k6 p( \9 T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! s& Y! B5 B# E8 n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 K* ]( K7 x& ?$ |' T8 N9 [   set [trade-record-one-len] of self length [trade-record-one] of self7 }5 l; N; C6 \2 G2 e4 n! O* a
   set trade-record-current( list (timer) (random money-upper-limit))3 t8 t1 h2 T6 [2 i

* N' v% A& v" f4 r, _问题的提示如下:% Q8 F) c5 q  Q0 B" M4 v5 b

% x( [3 {9 O$ _error while turtle 50 running OF in procedure DO-BUSINESS
+ q7 C! A7 d/ q: U2 X/ n  called by procedure GO6 U; U4 D( w4 T0 ?- D; j  V- ^- H
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; |4 ^8 A* d- r$ d" a, f- d
(halted running of go)& S1 v. u% l' H+ K4 U5 W4 E# v+ @' P
/ [, v: n' ^: X: B- _
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 p+ }+ j* C1 s( [; q
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2 c9 w1 B* B0 y6 `
globals[
' O* S3 ]) k4 O* Fxmax5 z# N0 B0 T0 ~! m0 H1 y. r" h
ymax% G$ Y2 N" K8 C! u0 D. R
global-reputation-list
/ g' D- d8 u2 }) D7 M7 Q
0 T# o' n( B" \  u8 h* [;;
每一个turtle的全局声誉都存在此LIST
- s0 B1 L6 D2 o- J. k' D6 kcredibility-list! E6 a# F+ [# j! x
;;
每一个turtle的评价可信度  w9 r* g. u& }, B1 A
honest-service; M; Y4 h1 ~! ^/ a0 P5 K8 u& R
unhonest-service  g  }0 I' R4 B3 e* ]: k
oscillation
/ t; V9 j0 S% Z: crand-dynamic2 y/ ]" e% e- w8 o8 M
]
$ q" v! I) r8 z# A. \8 O. [3 x7 H  T( X9 j) `7 H9 M  J- m
turtles-own[* m, f% D1 `" N: e* x, F
trade-record-all
; E( B$ H* k# S& k# s) ?$ Y;;a list of lists,
trade-record-one组成
9 b* w: Y' X  a% V& f" V" Z! utrade-record-one
$ J0 v* @) W: D2 z+ o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& E* \! K, z$ D; x& t/ i5 k. \

. M) Y/ y! n# l7 ~;;[
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]]
5 w6 J- y& M; C2 gtrade-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]( V! x' X1 ?# ~. D7 Y) V
credibility-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 ^0 ]( l' n4 I' {" tneighbor-total
; i* X3 j2 Y- _  D: S;;
记录该turtle的邻居节点的数目
$ D8 ~: r6 k; D# s5 C6 j4 ztrade-time
0 n+ F- ~' A5 m- h. I! d;;
当前发生交易的turtle的交易时间
4 k  W" J. [7 g2 T3 w1 P, N5 X9 \+ Wappraise-give0 V( S, Q2 w- F2 g
;;
当前发生交易时给出的评价
* X2 p! O2 P- K, C3 a, [2 Eappraise-receive
+ F1 v8 g( l# x( Z5 L  Z7 J- M;;
当前发生交易时收到的评价
) p$ O# k) h8 Cappraise-time
) r. j% P6 ?. k8 N% a/ O/ f;;
当前发生交易时的评价时间( I3 h5 B& N# [+ o, I5 g
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! R2 |! ~' }4 H$ C+ qtrade-times-total9 W4 ~2 e( d6 r4 g) c' e
;;
与当前turtle的交易总次数
2 G% D; |" P* h9 d# ~5 Etrade-money-total3 A" ~# N7 _7 }: F* ~2 }; h1 ?! ]
;;
与当前turtle的交易总金额
3 K% j& U9 f. `2 p/ Dlocal-reputation# o0 d7 ^5 F: y4 i7 W
global-reputation. O, I, M5 |' A# x+ A- H4 z9 k  F1 v/ j
credibility7 d# u. b  J& D6 m, c: l4 V9 E
;;
评价可信度,每次交易后都需要更新
- g7 t( t2 \( r+ ~3 \credibility-all" a: Q4 h0 \; L, [3 J; t5 y. v
;;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
& T5 D5 R! b% p# Q) y1 F/ Z+ y, _8 A" }) Z
;;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
& B1 T$ ^& ~  Q6 hcredibility-one& W/ j) _7 n5 Q" u$ M" Y' i$ O; G; j
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people% B( U0 O$ e: Y) u
global-proportion* J4 i- P9 f1 D; d: ~- n" ]
customer) E5 Y) j# Q4 S& B9 e
customer-no/ k. j9 R) [2 Q) ^9 r
trust-ok
! x5 U3 h: B4 j' ntrade-record-one-len;;trade-record-one的长度7 V6 g8 S- Z$ g( s& K& z
]: r1 N& Z' ~2 M9 R. ]2 ]2 p

4 S/ V- J4 o/ B  g+ @$ z4 k0 e;;setup procedure2 [3 `" I4 C  {, ~

  j+ C: ?: u+ v- c- Lto setup
) d- t8 D# C: [' u2 d7 W' {8 C9 }* `, s6 F% m% s- }+ Q
ca

: H& F9 q3 r- K% c
% d' B0 ]# r; [  Iinitialize-settings
  P+ v4 K, [& y. Z9 |9 R! d% d
3 W( `4 `- d5 \$ J" ]7 E- b1 j1 i
crt people [setup-turtles]
6 O0 A/ g* V' U

2 T4 T9 L! a0 p6 W3 }9 S* ]  o+ ]reset-timer
" d* F, w# Z9 l" r' @! U6 o5 \1 p; I
& u6 Q  p; z( }! {9 [
poll-class
& h0 F1 Q3 v' C1 N

% T# R. z% H! z# r; ?; Rsetup-plots
/ c, [- U9 w5 ?) a* s; w4 i: ]/ n9 N8 L
* C" @/ ^4 H: H5 p  i8 q0 |
do-plots
/ p" ~& _* C- r  T
end
1 e# m" P3 B7 P! k) @* H/ S/ ^- N
9 q9 T5 U6 `+ L7 Tto initialize-settings
9 G  J9 j! \+ M) `" W! y" a) b) V# o
set global-reputation-list []
+ m/ \# ?  P& M' K
# p$ l) z3 F# U8 Y3 K. M. x
set credibility-list n-values people [0.5]

: y4 @8 j  s0 r& @2 f3 X; j7 |9 Y- s) E) Q0 o9 O
set honest-service 0
/ d) n! N* e. Y0 K. G6 x
. x6 r9 R1 x( ?1 a( C3 d
set unhonest-service 0

9 t4 l! x9 P8 S( N( ]. Q8 B/ x* v
6 o  @# ?" x5 xset oscillation 0
  a/ L0 ?4 m+ A7 v7 N+ Y$ v. j

% B( ~% Y# R  D7 Pset rand-dynamic 0

1 t1 A4 ~' S" @- s+ r5 |5 n* {& gend0 O2 _( K& L8 v8 _; h

1 M5 f& L5 I' ]3 r& @* ato setup-turtles
/ C# U  s& k; b9 K/ yset shape "person"4 a, Q: H2 t, t6 U$ i  c& P; x
setxy random-xcor random-ycor* F1 g' R1 Y) P, e
set trade-record-one []
; [& M" ^& v# t  \9 M" I0 ^
* x: _  b! a( }1 i3 a( }5 E3 T& s
set trade-record-all n-values people [(list (? + 1) 0 0)] + X. Q3 q, o( w. \; _) I
9 n9 t. M1 N8 |1 I7 E
set trade-record-current []
  f2 ~+ [- I* [' ~% G4 Lset credibility-receive []1 e7 h9 Z( G0 ~) q1 J  e  y! G
set local-reputation 0.5
( N; N; D; Z+ c3 V9 aset neighbor-total 0
1 [$ |# E8 B6 Q9 ^% cset trade-times-total 07 K4 [1 x9 X: X
set trade-money-total 0
, `9 T" N8 \& b) oset customer nobody
% ]9 `) k) ?0 y' p7 u( a2 rset credibility-all n-values people [creat-credibility]
) F7 x6 R! S! d& H) a/ Y  Mset credibility n-values people [-1]
! ]  o& ~5 I* w5 b" \6 Cget-color
: |, u" y7 \% w3 k! T

0 W1 J# }* |/ ^2 _1 F$ Vend
, ]" ^- m( F) `! g: v4 k* L4 n  C5 N; H+ s
to-report creat-credibility
9 ~. d2 j& i3 freport n-values people [0.5]
% S% c7 d, o) ^- K. D- a- K) a6 ~* lend
( x( g* g/ q4 j' X" ]
+ n8 B8 {3 a* q1 b1 j0 Dto setup-plots
( h+ @, L! b/ L6 f4 O& X# ]+ N. L0 V5 u+ ^5 p
set xmax 30

6 l# M2 i! i2 Q  c" p9 ~% \. U5 B- M# x1 B
set ymax 1.0
( z, @# |/ i# I$ J9 k% n' [

" ^/ _: {& L( Fclear-all-plots

0 K  s$ _& S- v0 K6 Q6 X/ a8 ~) v& H" {( G+ }+ ^+ L
setup-plot1
. @, K0 n* U  P" K0 k
) G* g+ O2 ~& \; T* ~
setup-plot2

5 G) {  a8 ^5 `2 e" ^- z
- X0 u* k* M$ ^' d5 j: b' Usetup-plot3

$ u! N* W- V- f* j/ I: k4 Xend
. j6 V* b) a+ H3 ~" Q5 B( p7 b  ~( S& q5 D9 r
;;run time procedures
1 K$ H& y" W( \
( V+ }6 W  y! x- `to go
) g2 x0 T% T0 e9 I# g5 Y9 h" A1 C+ |" w" d6 ?: O
ask turtles [do-business]

9 Y: k. T2 _8 J4 X, t, z6 Mend% z. t' R/ d$ Y. C! g3 C8 T
2 {4 w( d2 @9 g9 \2 ?3 \% `/ N3 A
to do-business ) |# t+ R3 w# P$ H% E6 s
. N8 u# X0 @- ^2 e. j. e9 G

/ R2 r! C; V2 ^) S& S6 qrt random 360
6 A3 g( o' y( a7 q

% o% f7 f9 D+ N8 Wfd 1
. d2 p8 C5 x9 r

* v+ i3 a6 e8 s. h7 p# O; {# b* Gifelse(other turtles-here != nobody)[

6 y! E; u, k) }; `9 G; V
2 f# g0 ^7 v2 [/ Eset customer one-of other turtles-here
( @% e" _8 b- V$ R2 O5 f* o

  [9 a1 D. `7 S3 C;; set [customer] of customer myself

  `- {9 Z! T  c0 B, H2 F; k) f0 e) p& {% H; g; e% q
set [trade-record-one] of self item (([who] of customer) - 1)4 d- l& g( R$ M( _
[trade-record-all]of self' \: _% z2 D8 |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 W/ p3 g- ~' ]3 k. ^" t0 r
/ M! V! g6 e( Z* `) fset [trade-record-one] of customer item (([who] of self) - 1)
% Z% W; M% n/ g/ d9 Z[trade-record-all]of customer
, i; L/ S" x; q) C: F- {) v

8 S. _, i1 Y$ [7 t" Yset [trade-record-one-len] of self length [trade-record-one] of self

, c6 t. n$ Q: x$ Z$ m( [; i3 n" i3 p: ?
set trade-record-current( list (timer) (random money-upper-limit))
! }+ d4 \7 B8 h- |; v% @
2 J9 t9 J' @7 t4 z& F
ask self [do-trust]
4 O, T+ n$ G5 X- \9 F& m1 ]8 D$ J;;
先求ij的信任度1 B& G8 \0 t1 r' |! N# K5 O

6 _$ M: Q7 u3 o3 z; Wif ([trust-ok] of self)
( C9 A$ r% ~( q;;
根据ij的信任度来决定是否与j进行交易[" M# C% a' q9 v7 [' y1 P; E
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 O3 W- l$ U$ z# p- U

4 s7 T& ~9 l* ?/ N. u[
7 v: n9 k: [1 e0 `

8 I0 N' u7 T- j- q4 b9 r6 }! i( wdo-trade
* k+ H; f( u* `- A

' ^2 }) ]1 O+ @* _/ Qupdate-credibility-ijl
# K( V, h; n0 g$ v) t

" S4 h" K9 T8 r4 @0 cupdate-credibility-list3 u7 o  r3 S; P9 ]$ d4 S

4 w* D+ v$ `1 N! B: Q
0 f  r8 p' X; b+ H; aupdate-global-reputation-list

- [% W" h7 M  Z; Z7 t$ R. ]/ _! P, u' x
poll-class
/ V% Y( ^' U/ [$ j3 L
$ c1 Z- T9 a( H! r( ^$ I/ ^+ n
get-color

3 G0 [  D( c# x
/ h7 H6 u* H# ?]]
0 o, n# A- S  @5 w( q9 O7 Q* P1 t' X4 D( V! t5 _1 a, O/ J( Y& b
;;
如果所得的信任度满足条件,则进行交易$ x5 a3 d$ H* _, ^8 j6 }

, j0 R# T8 S7 ^[

9 X* r. q% g. ]
& z  T# a0 q" Prt random 360

# [* y3 v# u' C! J1 g
0 r; B3 ^; {0 q+ M- \% Nfd 1

9 Z% r+ _+ d' [- [1 {1 y+ G; d9 h
* j# u# g; d& x# q+ J]
3 G$ M" ?8 y2 d$ X. U( ]% {$ v
6 P" G; J/ P( z& N& n* Q
end
5 Q* s7 U5 {$ g* P) I
2 w2 h- s' C4 [* o
to do-trust & S) J6 M. v4 J# y- ^* E
set trust-ok False
! v+ P+ T, [, M( A8 J/ ~; N' u
) v/ j: g  ]$ H' [# v& Z, m

. z- X" M" t8 t, slet max-trade-times 0
/ E1 H3 Z1 i/ \% Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ M& Z; \& h8 F+ b# ]- |
let max-trade-money 0- J8 o# E) {5 t' U/ l0 D0 b  D
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- R) N  c( ]5 p! A! n2 ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 O: }, d1 s: w% ?8 s
& [% `* ]" N/ \' Z2 r

; @, z7 A4 a* o# m4 y$ N8 oget-global-proportion
9 |: w2 s! D8 Flet trust-value$ M, E6 g! I* C8 @9 j. _0 y
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
7 ?, O5 G3 r( _
if(trust-value > trade-trust-value)( y2 H; ?9 d3 Z6 E# A3 r
[set trust-ok true]; B4 p5 y) h. q) g) U* U3 A/ ^- l% b
end: \9 C( U' G) p  r; w; w

5 P& q1 _/ ?; h0 Ito get-global-proportion
* j( V* N* A% p$ I  [6 I6 G( k2 Zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. |  R; t: o! {$ k4 S& X[set global-proportion 0]% e$ b, s! a1 |9 t
[let i 0+ E4 M6 d7 K3 }$ U8 x  E. M% g
let sum-money 0
/ X2 v8 N+ W/ s1 q5 A- }while[ i < people]* R7 s3 x: p/ X' L
[
3 c8 G- X' M: k4 y1 k7 Iif( length (item i
% {6 w/ y# E( w6 t- V[trade-record-all] of customer) > 3 )
  w- g1 o( ]) f6 i
[
, Z/ v+ J: C( I* Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 Y) X( H/ F! C$ e% X9 k- Z, l$ j$ j]
" r; Y( W2 H. r& @& g1 c% R]3 d- C) v5 z3 b& J
let j 0
- ~, U9 e2 `3 y5 ]let note 0
0 O! v& y1 ^* e; O! U+ E' a. C) a* P4 iwhile[ j < people]/ @2 d; o9 h' q( L
[
5 x: H& |4 i1 l( F: n2 e+ W8 qif( length (item i: D$ R) x0 c9 J2 S/ T
[trade-record-all] of customer) > 3 )

9 T, K. Z9 [! [/ O+ i[
% g) |, A* M) p" tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- g( Z( K8 o! c& j! D8 O+ ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 _* v  G9 `0 v# b  _# U
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], E4 s! G. s0 v: ]# t8 X8 c9 B
]: Z+ m+ w' }* u6 _- J5 Q
]
9 C# p5 C4 R# b0 Tset global-proportion note6 ?8 d) u) V, o. P5 r8 D
]
- ?2 d& G5 ~* h0 b9 Nend* {/ y' n7 F3 V# I

8 x% s$ g. |2 z0 vto do-trade
7 ~  N3 ]* c0 `7 _0 C: F;;
这个过程实际上是给双方作出评价的过程
8 Q- t# V1 O9 h6 gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 w9 J4 M/ J. @" j; b* k& W5 _4 C2 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! G  H9 u1 v% Y1 ^; o6 n
set trade-record-current lput(timer) trade-record-current/ I: S' q4 f3 `) E' u7 F
;;
评价时间  o8 |: H7 Q0 q) w7 [
ask myself [( I1 K* U9 q3 w* r- u; R
update-local-reputation" a4 y! @: i- v* j4 `: {
set trade-record-current lput([local-reputation] of myself) trade-record-current
- ^1 _( K5 X3 H2 V$ {/ O) v4 S]
; w6 }8 K6 t  Eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ j9 u/ Q, F$ I  h
;;
将此次交易的记录加入到trade-record-one$ e+ I% @8 q+ g2 R1 X" J  G
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 N. z% O+ S$ n6 V6 `& w
let note (item 2 trade-record-current )7 O) z7 t3 O" O. {: G2 {4 m* z1 E
set trade-record-current
- o: P2 X3 w2 X- C( I, x(replace-item 2 trade-record-current (item 3 trade-record-current))

1 q+ U! k7 t1 Lset trade-record-current: s7 O1 b! I% s  y) N0 u1 R: h
(replace-item 3 trade-record-current note)" e5 |0 q8 m$ q2 L

8 T& U( ^& m) m1 f
' Z9 R' s' D' @
ask customer [2 b1 @# ^/ J3 f# n) n
update-local-reputation
% g2 x0 i% U: ?6 j2 {# C' h( bset trade-record-current
; ~2 V5 ^$ g9 X! z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- r/ d0 G4 r9 ^* a& a( p]* r! \/ W6 l/ }6 }& m. H$ N; d' Y

0 e0 u  u& H2 D4 ?- L4 Q' R1 J
1 G  W$ k* N! T: z2 Z# F
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) A! a6 Z7 |+ d" \; V9 y

, y* ^' e  z5 g( I  F; {( sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  Z& E' X% |3 g0 T2 _# g% ];;
将此次交易的记录加入到customertrade-record-all
' w# i# h% B7 \4 n3 J" k2 Fend
5 u( [% [- V3 }: y- g. x. p* c; B; W& X3 J
to update-local-reputation6 t; i& B& o' n5 s$ b9 o% I9 {
set [trade-record-one-len] of myself length [trade-record-one] of myself
# {* w9 j% l9 r) s/ [3 o6 x  E; x$ p: Q" A) ]
( [- D( T+ J/ m& J2 G2 \
;;if [trade-record-one-len] of myself > 3

5 |' c7 _) [7 P; Q3 n/ s  C$ Nupdate-neighbor-total
8 Z+ d- u' z/ f* F;;
更新邻居节点的数目,在此进行
* C; \# |% I1 R1 ]; {let i 39 E, ?( [6 ^9 B1 x! N  K: M
let sum-time 0/ k3 [3 u! W' v) S* N/ D
while[i < [trade-record-one-len] of myself]
7 Q/ r) a' i/ D6 ^: v+ y6 b[0 {3 P2 g5 s/ V" A
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* m5 p8 J4 K5 t7 l8 ~
set i
& t$ q) I5 |1 x5 X6 o) k- j6 a+ O1 S6 m# |( i + 1)
6 ?% I* J/ S. s" y7 U" j( l
]5 |& |' g, C  E- Z. I$ O0 r' F
let j 3+ h! U: k$ O& W9 p' Q/ ~. M2 ]2 k
let sum-money 0
6 |: d; z8 V) K) E* Swhile[j < [trade-record-one-len] of myself]
8 |/ [1 v' |. |, K# A- ~( _) a[; F/ @, t' H' ^- h$ \
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)
" K5 [0 a/ l: V3 l$ q6 [0 mset j
/ c# X, O' ]. |) \7 h( j + 1)
% k  c5 b+ Y' \$ k1 h" d2 @9 t
]
' Y' Y0 j8 i8 v' T: vlet k 3
" c1 b/ F7 U- B! C/ b7 }let power 0+ }1 i9 A) L$ F- P6 A
let local 0
* F) v( u# X  x/ S/ Q' Nwhile [k <[trade-record-one-len] of myself]- k2 O: b7 D7 x" ~0 ~2 }
[4 D8 j- y; @% [8 f. f
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) ) c  D& Y( ?9 E; y- B
set k (k + 1)
& U3 Y5 Z. N0 z" m+ }. M" ?5 G: {]  L- {. U- @1 q0 ^( O" \+ O5 Q" P
set [local-reputation] of myself (local)
7 s) ?4 l) P0 H7 {$ i( Mend. ^& j$ y+ q4 s2 Y  t

; w- n4 V+ ~% i# l5 ~. d  ]* _to update-neighbor-total
6 y- e( I3 M7 h
& \; }) t; G; I: C3 L& P9 Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ W4 j5 A6 M1 A2 U3 }" O% o3 [7 @: X' k0 _9 L
5 A5 C6 b5 o& i, z# g
end0 J: [) Q) R+ M* m
1 D- R/ a# q( j
to update-credibility-ijl
  h4 j9 [6 p' G- |) C! `
2 j. e9 i7 U. R3 }1 Q1 u  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。- |! [6 B, {! w4 `( d8 n7 X
let l 0
' Q7 Q* y7 K" H$ [& B$ Twhile[ l < people ]3 w  W' y5 z" y4 Q( r% D
;;
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) {  y. E* D) I( `2 m. n[
2 M% n9 [2 X# v3 dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 e" N- s2 k4 E% `' N/ E7 \' b
if (trade-record-one-j-l-len > 3)
+ d9 }% D9 M# S! ~7 g[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
! F7 k5 u: B% \8 F, S$ klet i 3' ?, z  d- P/ k' U1 B
let sum-time 0" {/ J/ W# s( s  s
while[i < trade-record-one-len]# y9 U. O: `. T3 C! T
[
& C) o3 c( C- G2 {; ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" x, A5 _# w. V1 d2 n
set i' r& b5 E  z: w7 J2 y0 D
( i + 1)
( ^! t1 E7 |$ E0 \" H. v
]- m* j5 K- \+ }6 Y( {3 i
let credibility-i-j-l 0) a+ U. t4 f& {1 m
;;i
评价(jjl的评价)
* H9 b! h7 F: Zlet j 3
; y6 I/ H9 C. {) _8 H7 z8 _( Qlet k 4, O) X8 s' i6 f1 [' e5 w/ o$ I
while[j < trade-record-one-len]
! m( F) O5 [7 |. a$ q[" ~  i5 z# w1 l7 a2 W4 W1 C8 Z
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( w2 S8 F3 F" h1 k/ L
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)8 Y1 z! R5 D6 \: f+ s
set j  ~/ e  T$ U# G% y1 g$ [- {
( j + 1)

, I6 p8 @: I: i- c8 V8 W]
3 E5 m# I6 N1 v: I$ @set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
& B* n0 O) P0 |; r. d
; S/ [6 R# Q7 `' y/ g7 p
! Z5 v/ y* b4 F; E6 @
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; Y2 w8 K7 j( ]5 ]5 P' W;;
及时更新il的评价质量的评价
& `+ q0 [- b6 D0 Bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], U5 O7 u2 K( p
set l (l + 1)
3 E/ Y8 S: A$ l- {) _]
; I- i* t! ?3 {: n9 D9 k% W! Yend
3 g1 ?5 R* N! X3 q% ~* ?+ e1 u  U1 m9 B
to update-credibility-list
# s: _# W7 y; a4 _: P: H8 nlet i 01 ~1 l6 W/ S, U9 ]! `
while[i < people]
1 f+ U3 j2 ]% ]! ?[6 e) Z- s- [6 ^
let j 0
+ T1 H* r7 j8 L! m3 p4 X2 i% E' alet note 0
8 l* {8 W  d6 v% m1 v# o+ Qlet k 0
; Z( v( E; k: S' I7 a8 Q1 w& y;;
计作出过评价的邻居节点的数目) W+ j- g, H7 i+ D' b
while[j < people]
% T$ b% `3 d5 Y% u7 k0 a" U[( }; K/ G% e( U) j) k* }
if (item j( [credibility] of turtle (i + 1)) != -1)1 {* i, p7 G% z4 t2 {6 x) t
;;
判断是否给本turtle的评价质量做出过评价的节点
$ y9 O# h3 i3 D9 H[set note (note + item j ([credibility]of turtle (i + 1)))
, V9 Y  F7 ]* M7 G5 q+ z;;*(exp (-(people - 2)))/(people - 2))]

+ r) A3 i6 o2 D' a8 W3 q& vset k (k + 1)1 k/ }* }1 o4 N0 h( Y
]
2 i) z- A; S$ D1 ~4 Nset j (j + 1)
- M! a( j( F+ a) g0 D, Q]' v8 ^/ u( j8 T$ U" m6 i$ O( r: w$ C) h
set note (note *(exp (- (1 / k)))/ k)5 X4 o, \/ a# u
set credibility-list (replace-item i credibility-list note)
$ k- \& N: p# J5 }$ qset i (i + 1)0 i, @8 I- J+ ]4 z% y* c
]+ z0 g( j  a6 v; {. b2 _# I
end
- ?% l& j2 k( |$ E3 l# D* p, |: H& _) N; c% U* E
to update-global-reputation-list2 e( ]9 e2 x. _. ^( i3 @3 Z- x0 W9 |5 {
let j 0
! M! S" l# d& {+ g0 Vwhile[j < people]) w$ s8 B5 i$ E; a4 `  r0 `3 w
[2 b1 x- B; r# F6 V
let new 0; A/ p8 X' {& J. X6 j
;;
暂存新的一个全局声誉$ g* ]* c1 @( |2 g5 U+ \
let i 0
5 e, D0 R- Q3 ^3 o* P; M! Plet sum-money 0' H9 G1 ^) k  `# O; r5 E
let credibility-money 0( e, l# y& p/ j6 E3 P7 W5 j- p
while [i < people]
# H/ H* P( B, N% j[. ~) l6 c0 ~+ x2 [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ u! H: d+ q' M5 x0 @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) v& s. K$ Y: k: T  Q6 ?set i (i + 1)
. g* }% q. X% U3 Z]2 E7 k5 C' U0 v5 {& Z' `4 e
let k 0
; I  V/ {/ t8 C6 X, _0 I- [let new1 0
  a5 n! @$ r( e7 y* Kwhile [k < people]
$ g* \* j2 p- y- w0 J[
4 s  B- s% O. _" b" O3 aset 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)
" `$ o: p5 S) B' |( r1 H& @  k9 l+ iset k (k + 1)
% }4 M- C4 H2 {. R, t) |. |3 h]! M' z' P; v3 Q5 S& q+ I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / [& m1 b( _' F% J" E) B$ q$ J
set global-reputation-list (replace-item j global-reputation-list new)
3 u6 h! {% y3 H( w0 j  i( v/ Bset j (j + 1)
: n6 H# n! ^7 z+ q4 d6 @]( l. L+ x2 y# {, M- U8 n
end
' x+ E( @0 }1 ?' A1 C5 j+ ^* u+ J! w+ Q' {2 x

: D& t4 t2 ^7 n6 J; J& j- ]2 E8 p& ?' c: {& q/ F# n; Y" m( o7 g
to get-color
/ a& I6 S0 J; O7 }+ @/ m+ c- S% S2 h
# }+ b/ q! c+ ~! @5 \2 f/ Zset color blue

/ d$ M9 U! T: l3 X' Fend$ R# b$ ]2 ~. |1 I. [

. |" G! u0 d7 o( |5 j$ xto poll-class+ G+ t) B& B* u& m# c
end
, U! y9 s: J* M! B4 e! T! J
# y) N3 [& ^7 y4 w1 Q; Z3 ]to setup-plot1
% Y" B! V: Q, T- V; p
- D( `6 O+ e2 z4 ^set-current-plot "Trends-of-Local-reputation"
; `: i: t! U4 X
1 J: u" ?$ _; [: `4 [: g3 G1 h
set-plot-x-range 0 xmax
+ U! z/ |" s2 E  U, I. a

3 z( V  l; D. Eset-plot-y-range 0.0 ymax

4 H: \6 c* T; }end
6 V! G- K) i0 u3 {, m" x1 k3 `: y$ K5 |6 I9 z
to setup-plot22 q: Z7 t* S! X0 U& n
$ t4 w: V3 X" ?' _
set-current-plot "Trends-of-global-reputation"

/ o, a7 P+ Y8 }% L, l
% Q! o+ L( U" _set-plot-x-range 0 xmax

% D; T4 S" b/ C4 ]8 e8 J  E( L* p! R. B5 e- n
set-plot-y-range 0.0 ymax

% i1 u$ ]) L- m" |end" F6 y. ]1 D4 e- v; u
) K( y& e! ~( _. z  @- x; j
to setup-plot3* _. F8 ?1 p5 u

8 L8 ?+ r4 H9 R9 L; M1 mset-current-plot "Trends-of-credibility"

5 H& t1 f4 v- w* Z7 z1 _3 [8 k( a3 l. E" ^7 l
set-plot-x-range 0 xmax
( `; h) e8 ?3 u, M1 {2 a
% ~; I2 [( n2 F% h3 W; `; k3 T
set-plot-y-range 0.0 ymax
0 S% O: K5 W8 N' G( e5 m- Y
end
# V* S/ i0 Z; V1 a4 w. C
0 Y$ X' Z7 B8 h4 a3 Hto do-plots
% u0 K* o/ ^/ d1 r9 `+ X- o2 ]) C  Jset-current-plot "Trends-of-Local-reputation"
/ f" G) N$ n5 gset-current-plot-pen "Honest service"
, r2 p2 o' U- a& [% z. q3 j, Cend
" {. L3 ^0 A. |# v& \" v- L  ?! k' T& b% y: Z' e: P) Q
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.$ J2 i/ z) S* q

& e# V# [* D8 w8 W: m$ ^0 g8 G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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