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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:
1 e- b; y) n7 L/ Z3 oto do-business
: Z# P5 z' @, z. m rt random 360
3 r( H& J! l$ {6 ?" D* F fd 16 O* u+ k: R0 s, p  w/ T
ifelse(other turtles-here != nobody)[
. t8 O" h9 S4 ^% }' w   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.
' q' s/ O- y7 |2 c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! _, y5 T! ]4 Q; f' ^
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 h% I/ f1 M9 }* x  a" F( n  x2 f+ r* v
   set [trade-record-one-len] of self length [trade-record-one] of self- ^  e2 L3 W7 f1 z! f
   set trade-record-current( list (timer) (random money-upper-limit)). h: o$ ~' l! I% H

4 g) J5 q% C4 A8 A; {9 {& @8 o问题的提示如下:" [3 i# e* V" b' @1 x' E% [( [

0 `$ p  s# Y. C) b6 ^. xerror while turtle 50 running OF in procedure DO-BUSINESS
* g8 x' h( I3 T  called by procedure GO7 G4 J" A) p' X: X$ X* [
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ y# U8 n# w3 P. Q1 o3 W
(halted running of go)
4 v/ p. k- j: i
, n- `3 N6 q! s+ f这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~' ~  i! F/ c/ \' ?6 U/ z& 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
! Y; |" v3 F$ w- M' m. C/ S- Rglobals[
7 S, `+ z/ F4 f4 O9 k2 H( xxmax
+ x- o+ s9 L& p, V' Z- \7 xymax. M5 R% F( C3 Z- E. y
global-reputation-list
3 }3 L4 e6 ]# o7 T/ |: p& s" P' L. {. Z4 ~" m
;;
每一个turtle的全局声誉都存在此LIST. r8 ~* j. A! ?+ b( x+ N0 b9 G
credibility-list
# x* _; o( Z; l% k( o0 k8 W( p( h7 I) };;
每一个turtle的评价可信度
( s9 Y+ R, p$ C1 Vhonest-service
5 y& c- H& H8 R8 g5 {unhonest-service) f- e6 `0 h6 `
oscillation
7 ?3 W) E! N) c2 Z  S9 d9 M. f8 B5 ?rand-dynamic2 H6 q2 s+ @7 l3 y
]
/ C" e; l% @( w+ j+ |* _
! D9 V9 N) J$ i+ y, zturtles-own[
; D0 E$ }- Q0 L8 K- g' Gtrade-record-all0 l: f; b% Q9 b0 B7 j; U; x
;;a list of lists,
trade-record-one组成
2 Z: ~% A) D9 ]/ K* s& Mtrade-record-one1 a% _3 r* k" H8 U6 j
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ P% F3 D0 S8 P4 n6 `( b: @
# y1 i& N, S1 H6 A;;[
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]]
# C& a. ?* c" i) [. G" |" \. s9 o' utrade-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]
$ c  S$ V3 c: Kcredibility-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
$ Z+ L0 |8 ]" E5 H. mneighbor-total
1 }! e: D( ~  P" K; x, }7 N5 |* J;;
记录该turtle的邻居节点的数目, I+ }8 r& s9 ]: L
trade-time% k6 N- f% ]1 Z- J8 |4 y& m7 c
;;
当前发生交易的turtle的交易时间
1 U4 p% M( h7 q  t2 R" ?appraise-give6 p. {" c0 p+ R$ e# j6 C
;;
当前发生交易时给出的评价! n6 |0 H% X6 n2 ~
appraise-receive
: \, x# E1 U) c' D9 `;;
当前发生交易时收到的评价5 n4 `! a7 j# F) e; N
appraise-time7 r& i2 j8 i; b( a1 K$ b
;;
当前发生交易时的评价时间
, p2 m3 _2 A& p6 A! qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 J" O8 V  }& ?trade-times-total6 \+ g- G( B2 D9 ?
;;
与当前turtle的交易总次数/ [6 ~8 @  H7 `4 T: r6 t
trade-money-total5 t# W2 o# k0 h
;;
与当前turtle的交易总金额
% `" G: V6 i& [; i: \local-reputation
$ `/ ~0 D% H6 f. l; y1 l! jglobal-reputation
8 d3 J& a, q7 ?) ncredibility0 h7 D* R8 z, k( r$ k' Y
;;
评价可信度,每次交易后都需要更新
' k3 B3 i# f/ t3 n+ {5 s) {' icredibility-all
: Y9 J7 k. O( ~1 R6 G5 E# ~;;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 b/ L) N1 @5 M$ L* S5 }% O7 b
) M+ a6 B" l3 ^! v3 i;;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  @# E% }3 H( D- D& Z6 h8 i4 J# H
credibility-one; V  [( Q# k+ C
;;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/ a1 @' v" k' o
global-proportion! [. h% E, q/ s8 e. q
customer, J5 E( r/ W/ S* _( C3 P& U- A
customer-no
2 |2 H" h& O/ q4 Ptrust-ok
/ j  G2 g" v& t  rtrade-record-one-len;;trade-record-one的长度, I; w5 a- S5 s# `
]: i4 s& [* u! e/ u% o* \% {+ p2 z
2 o9 ^4 {& ?( A& F0 o! \
;;setup procedure$ z& q/ Y+ o6 Q8 p

' J" v0 c$ Z7 F/ I- g0 hto setup; {; p  m: i8 r- l. [% Q8 q: Q; N

/ m% ?7 a4 ~6 n* m+ J9 X; Qca
! u  W! P8 c5 L* r% s9 ]2 F! c4 R5 p

7 D% M& x+ |8 N) S/ @7 y/ ~initialize-settings

9 @" b7 D7 W5 X0 B
4 V; I0 |! i  N% T0 H$ `: Q! \/ m$ icrt people [setup-turtles]

$ l, Z" x$ Y+ b  Q  n! j; \5 N% T- b; y( |4 z$ e* g
reset-timer
/ `! u, W* ]; U
2 q# g7 i/ |* N* C6 q
poll-class
( B, D! ^* p& m
# h; k+ Q3 m7 b- k0 K3 P' l
setup-plots
- `: I/ ^& y, E

% g% L* i% M4 K8 _' v5 b  a& x) Ldo-plots
) t2 I% c) W9 K0 e- D% r
end9 }4 v+ c4 P1 c9 S! q

% M1 _$ ]2 {$ t8 t) Qto initialize-settings
) @5 k8 M7 B$ C! _9 X- W6 j+ m% R; o( c; |$ d$ d
set global-reputation-list []
9 d# @0 z# S/ h& k# X

5 R$ y6 l  s* F; @set credibility-list n-values people [0.5]

1 w7 A1 M( n. Q; E$ R1 u  p6 [, [
set honest-service 0
7 {+ i: B/ m/ R5 e7 W
# j0 X5 W5 b3 T# a
set unhonest-service 0
- B4 a- t* ?: \
' z! w7 o" S) z( m
set oscillation 0
( v; @9 S  H7 q7 K' W6 J; |
1 j- W% C% e) F( g$ Q( d) V
set rand-dynamic 0
( W( r3 @" Y8 J0 p+ k
end" x( v2 x9 f. Z! q+ H; O

5 p0 P/ j0 i( L' E+ Ato setup-turtles 5 M- r" E/ P+ H" ?( ~2 C1 J
set shape "person"; @# q4 ~4 {1 |
setxy random-xcor random-ycor
/ D- M2 H; X3 L- c% Aset trade-record-one []! u$ F7 ?5 @, K2 d
# v. o; Z9 {4 Z4 Y$ [
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 b+ i1 f& g3 e

* a7 B; q% ~- d2 _* q; sset trade-record-current []& D9 v$ E2 L, @2 k) _& ~
set credibility-receive []
2 N! E  `; F% ~6 P& |* P; s# v% d0 }set local-reputation 0.5
1 q7 a6 s* ?, Q+ Eset neighbor-total 0* A% b7 G. X! F% @
set trade-times-total 0
! C5 h3 R0 _/ I( \set trade-money-total 0
$ l; S( M' K2 j" t3 n8 I# a  yset customer nobody
+ C# ]5 h7 ~6 V8 N" A- @- I1 mset credibility-all n-values people [creat-credibility]& q5 q& ^* @' z( u" H
set credibility n-values people [-1]
" I( |7 B; o- e1 d# qget-color& G2 F. H$ N0 e3 b) ~: {- K
3 g8 [- ^. Y# K- ~, @9 ^' c  P
end
$ w( e7 f6 d: o* ^" S' _8 N. V2 l6 Z% W5 A
to-report creat-credibility
* y- Z; K; z/ W$ o' Sreport n-values people [0.5]
. V" k) K+ ]+ d# {5 Q/ fend
; }# d9 D  N$ K' M) B! ^; P5 S" N* g5 n* u. z: k' X# x) x( h0 |+ f
to setup-plots
2 h& O( y0 e5 L3 |
1 E2 L& z+ u# @, S, Q" }0 g8 Eset xmax 30

9 `4 Q  }- H7 j# d9 p
3 o( W- B4 ?  g+ r3 Gset ymax 1.0
: Y" h) H8 ^% m: ]4 a9 H6 z
7 R( I3 {) J9 `, Z% [
clear-all-plots
" y" j; f! e' r4 _( T0 x! X

# A& N5 B+ Z) S( s/ ?0 msetup-plot1
+ ~, M0 D7 i8 ~
# O1 n( C% L, Y  i% t
setup-plot2

# m6 @# G& `3 |( ?4 v% D
9 g% r: f7 }) i; Usetup-plot3
7 ~4 q( e4 K% C2 n7 P
end
  _6 g- p, L5 F5 ]# n. |
) M2 b8 s& I2 H7 x- ~* G;;run time procedures* y( m, C* {; g3 a0 q% Z
( Y* V4 W; O& q6 S; a
to go
5 j* m: P9 `& j; L6 K3 U6 v" M* n* [8 X
ask turtles [do-business]

9 m5 @, |% c) ~. Aend, z4 M4 L  U$ g4 }7 Q: B: ~
/ i. X# g" a4 w5 q: ^" c
to do-business 5 H4 X- F6 }$ i1 v+ ~. A
4 q& P7 T6 ~" c  Y. O

: ]4 \# c5 e" A% ?$ Y" x( @9 W) k2 z" rrt random 360

7 t/ o& R9 m9 s$ i% F1 z4 b1 l8 i2 A! o$ R9 N
fd 1

5 P; g) l  C+ H  @0 K& L+ V
  `! L0 F9 q; qifelse(other turtles-here != nobody)[

5 [# y$ r# ^% q+ Z
1 i" H& j) a; T& @: g7 L: ~set customer one-of other turtles-here

+ y: Z$ M) w5 ~1 S0 N. y( s% ^
- @7 q& H( d9 i. A& U% L;; set [customer] of customer myself

' c9 [! V8 E! Y4 \
2 g- U6 c8 z8 w) d. K# hset [trade-record-one] of self item (([who] of customer) - 1)0 w) `* I) z$ w' i. @
[trade-record-all]of self( ~9 y4 m5 r& E5 m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. ]* H% e3 I9 z3 X  h
+ F$ _% L* K: m. S1 F
set [trade-record-one] of customer item (([who] of self) - 1), m, O5 v* y, G! R3 u0 Y
[trade-record-all]of customer
! M( }9 H! A1 F: U
; Y; s8 |* I& h+ z. p: [5 q: B0 H
set [trade-record-one-len] of self length [trade-record-one] of self
& f- D4 M% \- d
/ I3 w) v+ Q* ?/ F* ^' D- b
set trade-record-current( list (timer) (random money-upper-limit))

/ c& p: X$ \8 o6 d  X+ a! o/ v/ J4 t$ T) h
ask self [do-trust]
+ h) C5 t/ P2 \% g7 q4 w3 J;;
先求ij的信任度  O" E& a" ~( z5 J/ e6 \; `6 K3 W

5 f& W  Q2 Z4 c; {if ([trust-ok] of self)8 A& Q- ~% R, n! e% D7 d
;;
根据ij的信任度来决定是否与j进行交易[
6 V5 P! ^+ P& B9 Nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 t/ p) X& C, P  ~5 l; G
4 n4 h* X* a& U5 f5 O, t! i
[

2 l, P8 E( \  v- ]; P; Q1 @  ~( P4 l
do-trade
' I# B0 T' Y. E0 ]" o3 O  B
% c3 f3 m" N6 E$ r: R
update-credibility-ijl

0 E4 S2 w2 z% x& s) @/ j5 Y
6 W( m2 U8 ?% m( a  Bupdate-credibility-list3 i5 v+ B; x. v2 G

7 k# Z1 O) C1 V- _& l: T" D- u( c; Q3 x* \
update-global-reputation-list
& E5 b  i! w4 |( l

! x& M& v7 {2 R* u9 }% Ppoll-class
, i' x/ Y; t3 D1 ~8 H
3 p3 q) x1 z" u
get-color
' [$ U1 v+ [, L6 G7 s* F/ \
: o! c6 n; W% U: R: C
]]
/ v+ h6 M  P" Y
( X2 l1 T: }2 ?' b  O0 @; O;;
如果所得的信任度满足条件,则进行交易8 c, N) J5 k) G4 |
+ m3 u/ K5 p3 |4 [
[

* t6 x$ `: [2 D2 X9 e1 @  y: ^2 d, i* m# O7 o3 w
rt random 360
9 q& Z$ v0 z8 f3 w# \7 w
2 W5 V6 {5 f7 d. {5 B
fd 1
. P8 r; K5 L! J$ u' _

$ `# {6 @( E. l- l. d]

, x# w2 V0 _' D0 `5 T, ?$ ?/ d  w+ q0 W# g  e( Y# R9 A6 |
end

+ ]5 J. T0 S1 S/ m" x. T$ J# E6 `" s7 u5 j* ~" E) B# l( \
to do-trust ' Q& B3 {$ O7 j/ s7 e# B
set trust-ok False$ S$ \2 o& f' N8 y# b

6 g0 |& O# r2 K, G2 ~3 G
1 c8 A+ S. K' B& Z5 t
let max-trade-times 0
4 x: `  |% n7 I" f; V; r6 }foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ ~9 y* O) J' G5 }let max-trade-money 0
1 T2 Z. t8 Y: f  M3 L# Kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ l" l* a7 ^6 o) Y. `1 t
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 }$ ^0 T' e5 C- C1 T& c$ Z
+ F! y. L" N+ P  V
! ?' @' m0 \, Z3 N" X
get-global-proportion
1 g* g  e9 ~* ~let trust-value* v. P1 e0 e- k% ^. j3 l& Z
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)

" J& S( q( w9 `# R* F: _1 ]if(trust-value > trade-trust-value)
4 r" {8 `5 f: A1 h- X* N) f[set trust-ok true]
  ^: O, T7 F! j5 V; K2 _+ V6 Jend: U! y  h" i) ~6 n% f  D

* ~  e4 {! u1 Z; d% _to get-global-proportion
! X) E/ T4 P# y, N6 Q* K& T; ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, S3 g) ^& U0 M$ J( z- q7 f- D[set global-proportion 0]6 \9 n  C( l0 q5 g( D$ U
[let i 0( v& X' c( m3 o/ w
let sum-money 0
/ F& i( u7 V# q, U* kwhile[ i < people]0 K* U; r1 v$ z  S6 |
[0 P8 O# `* ^: F0 ^) }1 k
if( length (item i2 p+ h' v- u- R' k; Q, q
[trade-record-all] of customer) > 3 )
+ h6 }/ r/ S) a! D3 G
[! z# l, R3 y3 q" _9 z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 M. Q# ^- B+ f0 K! k9 O]
( B  k8 ]0 E! x( U- r) E]% f5 k' n' x+ l) c' `- [
let j 07 P7 ~! r+ s3 X" \, O
let note 06 z6 F8 J5 H' o
while[ j < people]
3 e0 R) n) m$ j% p  G( R[
& ^- y+ p3 B2 ?5 eif( length (item i
% k& X2 N4 j8 w: @8 a  E: T$ b[trade-record-all] of customer) > 3 )

8 }1 M# P! C5 x4 e6 u" n9 S, W: p* ~3 N' z[
+ n2 q* n# L4 g8 n. e* ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' A+ g% \- p  t% w+ C; q6 a& Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) O! \- Z# k  S) L1 z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 \7 ~% z/ B, u  s: R4 i8 u. e
]
4 `5 j. K3 m4 I5 Z& i], ]3 C5 v$ h$ Q8 o7 E  c4 c
set global-proportion note
5 c+ p: Q8 O9 Z$ k, V]4 B; z4 g3 P$ q6 z/ z% M
end
" x& u/ A2 W. I. q2 K1 a- i' W( I: ^& I0 x: u4 y
to do-trade
- B, I  E, s3 N( t! P1 @6 _;;
这个过程实际上是给双方作出评价的过程
3 E- h0 u* l/ e1 aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ [- c  B6 J5 E1 Q6 gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 Q4 l# f- e- P9 }0 n
set trade-record-current lput(timer) trade-record-current
! B( p  r) k: \$ q, A;;
评价时间
6 `1 c. M" y# ?  @0 y4 Hask myself [
; n# E2 ]' \) a  O3 C- r7 T9 Eupdate-local-reputation* u. [- `2 }( j, \
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 d( U( ?' P4 {- Y3 S% t# V+ V]
* F6 \0 Q7 w9 k1 y  i/ @# Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- h- j3 c9 m3 P1 p;;
将此次交易的记录加入到trade-record-one
- c$ _; ^& z6 G" Zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 P7 s* ^2 o) U  F/ _* X
let note (item 2 trade-record-current )
8 F7 f% _' N; @set trade-record-current
" I- K9 x$ t4 o. V0 @(replace-item 2 trade-record-current (item 3 trade-record-current))
3 M( b' p8 L* u2 ?, l# X9 k  S$ {
set trade-record-current
7 }# b" K7 H+ y  q5 }8 k8 T- q(replace-item 3 trade-record-current note)
1 ?) P& s0 Q- ~5 Q* u! y1 L# c' L' j1 U' K- J

9 L5 j3 y1 P9 ~0 y& V; gask customer [3 `! p6 R4 g" o( R
update-local-reputation
$ P0 b% k& ?3 o+ M* E4 Uset trade-record-current4 h- Q+ ^2 V$ C0 D
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 t0 K: j( ^  M1 ]% L" y" A
]
6 Y$ n- ~1 V7 S( A
; H% E; ]6 `0 P; c* P' b! S% Q
6 u) c7 ~5 G1 P9 p
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: ]) q' {7 ^' ^/ h

6 M/ A5 h) S/ N& d/ Q7 q0 dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  F* @" ]% t) L$ k2 A" Q& l; M/ T
;;
将此次交易的记录加入到customertrade-record-all
+ u% k& @& o% S) r0 t* `6 Bend8 k8 T: Z; j+ {: m- v; \0 d

. I5 f& v+ Z# u; d+ ^7 {- a- dto update-local-reputation: \" |; Q% t( n8 n- Y
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ a: m; }% N; ^3 V! {, J
3 m+ a& h" @+ G3 p+ O/ ?4 I( y# b3 ]/ s' C$ N/ g4 [
;;if [trade-record-one-len] of myself > 3
! d, }& ~& }/ e5 e  E4 w$ k# g: g
update-neighbor-total
% |" W  r; p" q. k;;
更新邻居节点的数目,在此进行
" X! @! X& ~( P7 D6 n9 Q! B" ^let i 3
7 }+ K+ i) Z* J' \  W: S. D, hlet sum-time 0# \# t3 ?% ]0 w
while[i < [trade-record-one-len] of myself]
# Q! N# H9 r+ H: q* Y7 m, Y[
' i0 t0 J5 H) L, z& _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 ]8 n7 s) ~3 y
set i9 v$ ~: q- h5 e4 c8 [& A8 f
( i + 1)
% c2 N- D4 Z- ?3 o& q2 T
]
. M, [: u; M# U$ Glet j 3
( s) V& m7 [  s5 J1 Clet sum-money 0% `2 S% ]( q" \! w. k1 h
while[j < [trade-record-one-len] of myself]
3 ?8 k+ f2 b" V: v* T+ E3 l[: j. g) n5 n; H( L+ l! t) c8 V$ x
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)
9 S$ w3 T- Q  t, ~set j
9 c! _, N  e5 V( j + 1)
% ^) ]# U5 i" G, m
]" Y3 H) w0 L% d' \7 Z( Z7 T$ E
let k 3
1 r+ Y2 ?/ t9 o- llet power 0
' U* r: s' Q$ W$ t& m6 Zlet local 0' x, s& b! o+ h# B( {4 i
while [k <[trade-record-one-len] of myself]
& m' E, b! H/ E5 [( Z- m$ W& W1 X[0 l. F( _( j( E, h' ^; a
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) + v5 a, ~( \9 h. b
set k (k + 1)
3 R+ \% h, O: z$ V3 X& }]
6 v  ~5 B# x; v. \- t7 l' R% tset [local-reputation] of myself (local)
9 M$ _+ l( Y6 z2 ]: nend4 ~; h" ?" G) S# I/ m3 H& Y

5 J  x5 P; f2 d# Kto update-neighbor-total
; L( |( q2 t5 O  x$ o
/ S0 F4 ~2 N% E! V/ P+ cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" y9 P7 f1 `5 Z! M. q/ F

; Z+ p" ^: O5 ^6 P1 `  M# O

1 e& k# H% h. qend
( X9 W* m# M6 h" o! l
9 V( Q3 g6 R. _# v5 i0 ]4 U4 Fto update-credibility-ijl 7 m9 p& V) g3 Z8 t/ v1 w7 |  J
* W. w5 W- O9 C6 r4 _& ~/ P# ?4 i
;;
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。+ b- E& y9 V6 E0 P8 Q5 o3 N2 m3 Y( s
let l 0
5 g' o( H! u2 o9 ~3 G: Vwhile[ l < people ]+ S* s2 Q/ x& v4 G
;;
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/ k+ c: w$ @: e! V/ X
[
6 T* l% S; L, Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  e# c8 _! @0 v5 fif (trade-record-one-j-l-len > 3)
% O/ o4 z, _+ o" G) a) Q[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$ F! ?2 }" `7 B  q; Y4 h  a( R! ]$ e
let i 3
% D7 |8 Q' N) M9 z3 n" a) |; tlet sum-time 07 u* B& y6 I& T  ?1 g+ f( P  `
while[i < trade-record-one-len]
. m; I4 G/ u2 e; y[
  e$ h  z  D1 W$ ]; S* ]# `& Uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; B- Q. f' J! v. T  i" \/ M% D; \* Bset i, U4 j& S8 a5 x+ M; L6 P$ [6 H) D
( i + 1)
8 Z9 y0 z, N2 A9 S
]
& C3 V+ l- `  Q( dlet credibility-i-j-l 0
2 ]4 c- E2 W6 I- [8 d! ~;;i
评价(jjl的评价)) k3 R- ?2 G6 k, v( u* o
let j 3
1 q4 ]6 O4 x2 B' G9 \) c$ J8 Wlet k 4
) n2 a* T/ G! W5 I) j8 _( Wwhile[j < trade-record-one-len]$ V2 z* z+ o+ w; Y
[( p/ p# a  u! [+ S
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
% s% Z7 h9 C- `# a3 Gset 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)
! V1 ]/ c0 J  n( Wset j' n$ R- e2 n( O
( j + 1)
8 S, }. A; K4 o% T9 _
]
# K+ ~9 K. E" f5 ~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 ))
4 }, {2 T* e, d) k# P3 o
+ a* x, {$ P' ]8 G1 Z3 R6 s% d) r1 O
6 G6 b& P) ^" D9 p# S
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 I5 ~" {! T6 i" ^) b& N& T
;;
及时更新il的评价质量的评价3 x3 K3 Q9 ?. q$ f, ?. z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 c7 a6 X: t" V; [/ Qset l (l + 1)# g. i% a% G( k: e8 x( x% B
]
( X6 n; S: m0 T2 m4 Yend( N5 o6 d2 n6 j3 P6 @

/ J" X- e+ W& T! o: @$ kto update-credibility-list2 J. u3 j( T" @
let i 0- ?6 w6 J2 W7 |/ r
while[i < people]5 t' n- D3 ^9 ?% K# e0 U: m
[
& W; m, x4 m0 blet j 0
/ u. j. [( E$ p; M1 Q% r. A# ^9 ulet note 0
6 B. s3 \1 p( V( L4 blet k 0
1 t/ ~0 i( G2 X( W9 k* m;;
计作出过评价的邻居节点的数目+ Q3 A9 m9 s6 P- a+ G6 W
while[j < people]6 s# q( r$ ?; P$ Y# B$ O3 Y' L
[
4 L8 J/ }3 {- `; g/ Gif (item j( [credibility] of turtle (i + 1)) != -1)+ `4 i- R- K) E* R2 p+ K3 Z; u1 w- p3 R
;;
判断是否给本turtle的评价质量做出过评价的节点
9 y8 N' {+ l' ?4 r: c[set note (note + item j ([credibility]of turtle (i + 1))), V! d8 B; \# O/ P* c+ Q& C/ ~
;;*(exp (-(people - 2)))/(people - 2))]

7 Z5 u' h- D( Qset k (k + 1)  A  y9 j5 V6 ]* _4 R1 Y( F6 i
]" j# B. B" k' i' g* o7 p% f7 H
set j (j + 1)
5 W4 P2 C& z7 ^]) L0 B4 H) i9 C( r7 ~
set note (note *(exp (- (1 / k)))/ k)
- j5 N! ]5 i2 j$ H2 z$ w, u0 `set credibility-list (replace-item i credibility-list note)/ ^3 O  O( G- T
set i (i + 1)( u6 W3 U4 ?# c
]
- ~, m& ]! u) z6 c6 xend0 Y- |+ C8 \3 V6 ^
) N1 _9 B) ^! G6 ~; N
to update-global-reputation-list
6 c' c# Y" @! }6 n4 G- z5 b- Qlet j 05 \: _) n7 S" F; P1 y! X. p7 }$ J
while[j < people]
( q' M1 [4 ~# j[5 t' k6 p9 [3 R- f2 `  h
let new 02 E. Q. |3 d2 a# A/ |
;;
暂存新的一个全局声誉
3 w& r( s  X% C  ~/ y3 ?3 U, c  ulet i 0* k6 X2 R: n! I( j) H6 Q
let sum-money 0
7 v9 j7 ~2 ]8 z9 i% ]. Elet credibility-money 0
# a' c! g; `) a1 pwhile [i < people]
  t1 G- Z, j5 Y[, h) ^8 U* D' @0 K; R2 W8 _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' U$ T# F/ Y6 w5 qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ \" D% Z6 k. G$ _( {: `5 sset i (i + 1)  ]0 t8 e3 x: \8 `
]- e: D& s( t" s8 X, K# X' T1 C- r
let k 0
; \7 ~' y, \1 V) l* ?. Elet new1 08 f) J' \( V0 N5 o1 O7 a% c  U
while [k < people]
, T1 z7 n9 H- O8 J' F7 d( v[. @6 }: l" x3 B; Y& Z. a& |
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)9 L0 o3 j3 {/ N3 ?9 A& {4 E
set k (k + 1)
. O) D; q! B8 _2 k]* a9 m; p7 w# z8 Z6 \5 g9 c; g! C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: ?( f6 n& X8 f9 K* S  x' bset global-reputation-list (replace-item j global-reputation-list new)$ `5 k& n. y6 O. d' d, H! r
set j (j + 1)' c6 w/ N- `7 X3 R
]
. r# f! m- O2 c; T+ j* L) O! ^. Qend
8 j6 n2 Q  s' h5 ]' {
1 o, \: v' Q" D# }. a8 z5 q- j- u% z9 M: x
2 K7 t- ?7 y( d, j- d
to get-color
$ _8 j6 w; m  h" [2 X- W1 f/ ~" E' \; c# p. Z
set color blue

1 a. Q$ t# S& p/ G5 v" E3 lend4 K: E' k0 y7 M: w6 `

8 j: u' [$ [. P6 ?8 _$ |+ eto poll-class: G7 W  X% x6 I
end
" v( d% ?% P6 X" E2 t6 x) }2 C6 G
+ ^1 N3 T' L: bto setup-plot14 u9 L4 K( v, i  e
# N: }1 b4 f" l4 i  S. K: S! {
set-current-plot "Trends-of-Local-reputation"
% d  u4 N6 `0 c- J3 t
$ h9 m6 r% Y( ]. H4 A
set-plot-x-range 0 xmax
4 T- O1 v, u9 R, ?4 I# {3 ^. h

1 W0 L7 }# K" j) Y6 s8 t9 ^set-plot-y-range 0.0 ymax
4 j: w' T. S. |6 a" Y: u% S$ |
end
) K2 a2 D- r/ @, t: O& h* |) H% P4 a
to setup-plot2* y3 k# v: f$ T6 g- `3 h  A" p! j

6 Q( k- W7 W# H5 |7 [6 ?6 dset-current-plot "Trends-of-global-reputation"
$ R- s4 F& r9 g. u

# B. i( R$ W; Z" n9 C; iset-plot-x-range 0 xmax

' Z1 t( D+ A. G/ w( O: K' a, D" Y
& {+ Y: c1 N, wset-plot-y-range 0.0 ymax
9 Y- V9 P' U) b% v$ G/ W1 N
end6 E6 j2 J- e! O2 m9 P

# r3 Y/ s; a/ {7 }+ M; J1 Mto setup-plot3
& w4 O  R$ U1 F, o! R% L6 ^" }" x& F6 S. Y
set-current-plot "Trends-of-credibility"

4 p8 Q) [$ [; \* |/ b
* s5 t" S/ x& u& _6 Jset-plot-x-range 0 xmax

; H9 Z+ y" @) m2 S& B! J$ D4 d0 V% G: M% \) X& T$ ?/ ~7 _4 e
set-plot-y-range 0.0 ymax
1 Z. a" S4 U/ ~
end# l. B1 ~/ g' O' L
7 [2 |2 u3 l% G
to do-plots$ ^8 B0 L( v6 H- x0 j: S, I
set-current-plot "Trends-of-Local-reputation": K. y+ u0 E+ b4 }$ q
set-current-plot-pen "Honest service"# H. L# s- c/ g  c9 m' {
end
/ u% |; A" W: L1 l
) s6 B% H& y8 t6 X* M# K! k1 ~+ e7 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.9 F- n+ z; ?6 c4 h; C7 s

8 F) I9 Y2 P$ B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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