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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:
7 P  p7 f7 r! ~& [" C, K# D0 kto do-business # ~4 o1 J6 ?3 r& s
rt random 360
- J/ ^" v2 h7 W fd 1
; y$ q0 G5 h9 m: ^% `- \ ifelse(other turtles-here != nobody)[
' ]( N" x+ z4 v- k   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.
/ a4 q0 i" E% |7 Z& _" U4 B   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! G5 M' b2 g# t
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 i/ \2 o" e/ {3 `5 V) Q  `1 @, C
   set [trade-record-one-len] of self length [trade-record-one] of self! |/ F/ ~/ S" m
   set trade-record-current( list (timer) (random money-upper-limit))( w6 ?( h1 C+ r

9 I4 Y2 \" M9 E) T7 u* J问题的提示如下:
: ?( U& P0 Q5 `& f( x% E& M1 k# q" |! [6 F  k
error while turtle 50 running OF in procedure DO-BUSINESS
& s. s: E  L7 j, \6 w0 P  called by procedure GO/ }1 R% c" r- z$ [  j  t" T
OF expected input to be a turtle agentset or turtle but got NOBODY instead.5 [4 Y1 n# @- H6 V# _1 @( g2 ?
(halted running of go)% ?, v8 n* W" i+ y

( ]: U9 ]- L+ o4 b3 z# O& H4 J4 z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~~
, H! B; N/ e. H4 ~* c# [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
. u% X2 m- Y9 r4 t, r' I" N: Lglobals[% P% s' c$ \  V% C, L$ D
xmax+ \) R2 ~- a  V+ V8 U
ymax" E; V; O, }* c! G" @
global-reputation-list
2 c' t) u, s8 y$ E5 m3 s& ^0 U$ d: f- V. s% g
;;
每一个turtle的全局声誉都存在此LIST5 |# V4 D6 H( R% @
credibility-list2 ^4 b, d# B1 a8 ~- Q) ?
;;
每一个turtle的评价可信度
2 X2 F4 h. J- d5 ~( _/ n, uhonest-service6 ^; Y. N4 G# w, H) j! v* s8 u
unhonest-service8 [. ]7 l4 S2 O, X+ l! c4 _
oscillation
& _3 P; k) z  y2 W7 F( @rand-dynamic
4 {" n1 c* b# o6 x% s]& I7 r7 D  {/ B5 g- B4 R

& `! I8 n* f, B; p" @2 Q) b' {turtles-own[7 R# i! h7 j$ ^! w% Q+ R, h
trade-record-all. ~' G* A: `" b# c
;;a list of lists,
trade-record-one组成) s( t2 a# o& N- P* r6 {2 }
trade-record-one
$ f  N9 n0 S0 l# c;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% r* z4 ]3 v( k8 l& V
. _/ }: d/ y: P$ V
;;[
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]]
' `6 Q$ s" |# `2 q6 G, etrade-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]
5 n8 z& d- \: p  k' ^  scredibility-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
1 g% t% o! J: |neighbor-total
3 c% K- _/ n2 {5 U# ^;;
记录该turtle的邻居节点的数目
) t/ Q  r6 b8 y/ y# N' u  |! @trade-time
$ r& V  _, e7 l  E! v4 U;;
当前发生交易的turtle的交易时间
) K" m8 K: B2 Q6 zappraise-give; p3 U9 Q9 J( G: r# s8 J* q
;;
当前发生交易时给出的评价# y  ~) f: o2 w2 {5 ]+ o, f8 X
appraise-receive' j0 R! I( D% l& ?8 c
;;
当前发生交易时收到的评价
: L4 o% F; @& ]4 X& L' [+ P0 ]appraise-time
6 c( t2 N7 u8 E3 }! q2 [( N, S+ u+ [;;
当前发生交易时的评价时间& v: P! g9 [( t) f
local-reputation-now;;此次交易后相对于对方turtle的局部声誉; c( s9 j$ I! x/ N4 G8 f
trade-times-total5 C+ `% T2 ?6 \
;;
与当前turtle的交易总次数! W2 i4 N" \2 h8 n
trade-money-total: s! `! J" u( {+ P
;;
与当前turtle的交易总金额" d/ F  j2 H/ e9 y+ C
local-reputation
2 {- s( s% K9 ]8 v5 r# cglobal-reputation; j- {: R, j( ?: a7 u  \0 z
credibility
8 C- v4 D6 d/ o5 U* Q, u  i;;
评价可信度,每次交易后都需要更新5 j9 Y* R  ?6 {8 Q  S! N! |
credibility-all
, l& L9 @6 Q$ ~, r3 V. e& l;;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, I, ?5 Q: A$ _2 C

$ `3 o! G: R" N* g;;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
- g8 B' a2 j, s2 vcredibility-one9 N( ~# t& x% ^9 F* e4 @
;;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
' V% @9 i* V% m9 Yglobal-proportion
6 j9 C0 P  u& ?  y6 Y) Ccustomer/ Z/ m0 M7 b" p  O
customer-no
' y3 F' r- A" C/ M: Btrust-ok
: I5 x# j, @; K5 V! _9 l- Ptrade-record-one-len;;trade-record-one的长度1 y( x! ?% W9 n
]
9 c9 U% x$ P% h- Q% l* j
" t$ n! ~" K# m5 ^( k0 H9 g5 Z  H, {2 z;;setup procedure: ~) t: D) R! i- Q

+ [& c$ X) i- D0 X. M) Tto setup  o. ]+ _8 d1 h* l6 L

! M' f( {0 q2 _, ~$ Z4 Y8 Gca

. J  _1 S. t( r6 |6 s1 H' e6 i, ?  \, g% O3 _
initialize-settings
' {$ f& T" c1 b6 I4 o, ]

1 V$ a2 `' M  V) i" F8 hcrt people [setup-turtles]
$ Q" |/ S2 p. v& b/ ]9 @! _: M
( u* o0 T0 C- `9 j+ Z8 ]4 D: M2 s
reset-timer
; r' _9 ?, _2 V5 O" }( U" `
) ~, b6 \5 M( Z0 n8 w2 R( w
poll-class
% z& Y" v4 ^& o& A
9 s( e6 k9 |6 E2 K) W. j: Y- R
setup-plots
- \' a; ^3 }/ V1 U) E
% v8 L% _. h0 J+ o7 G9 r
do-plots
5 U1 a3 {7 O6 N
end
' T3 ?! d- D1 U# o3 I$ k9 s5 T
5 ]; F: f$ f- q! E' Bto initialize-settings
' B" X+ O1 G% b& W( C, }3 U* ]% z
7 |/ ]9 Q  c, G$ pset global-reputation-list []
5 i3 v+ l/ W1 r# o- i/ T
9 f8 R3 I: W, q3 w
set credibility-list n-values people [0.5]
% @. S( `  J$ u/ M7 q

/ B# j( s  d. u3 Hset honest-service 0

9 L; L* r+ i9 t7 q! x3 G# x
7 R- Y# M6 M: X  x: X0 Gset unhonest-service 0

0 W) n4 g- z1 h2 S" E, X: A+ V( i/ O$ _5 |
set oscillation 0

6 F" [7 L4 j7 N& C/ U/ x5 r# h! f3 s/ u4 A: \" ]* L6 X
set rand-dynamic 0
' U5 |* @$ c4 T( l
end- o3 K1 ]' x0 V& m! K
7 |5 J8 Y2 \( G
to setup-turtles $ {9 g* X& }# P+ E, O0 Z' \
set shape "person"/ O0 Q- Z0 d* F
setxy random-xcor random-ycor7 }+ E; h) r2 ]& U% d5 a$ w& k+ r
set trade-record-one []
+ }9 M7 I1 x; R3 n* r& _* q
  L7 ~& }) n+ T& v/ [) t- u+ r
set trade-record-all n-values people [(list (? + 1) 0 0)] 4 Y( ]6 ~# P8 O3 l

; x2 n$ T9 s- i0 X  l: Kset trade-record-current []: N0 n3 @. M8 y6 H6 l
set credibility-receive []
' w9 w) b6 e3 O2 G2 ]set local-reputation 0.5
, f5 X% E; A$ S; Y+ y- mset neighbor-total 08 J- l- [! J; l: o2 {, d
set trade-times-total 08 S7 p$ L+ r+ V) t- i: `1 v& o
set trade-money-total 0# }& C7 r. m7 \- m' q' Y
set customer nobody# g- A% c7 `7 o1 E$ s5 Z
set credibility-all n-values people [creat-credibility]
3 \$ b* E" f. C0 t/ d/ I& Y4 E  a# rset credibility n-values people [-1]
( u* q: }  a/ `( N) n+ |get-color0 Y# Y( z3 y% ^  R: p, P
5 D, I% q* T1 R$ u% v/ k. B' r0 }4 d, o
end
, Q: e/ S  u$ v/ a5 C5 X% [5 s) M6 ]$ F
to-report creat-credibility3 @+ Y" L  z9 r* q5 e4 ^# W9 O
report n-values people [0.5]
, I" D8 ~' B9 I6 l$ a! U1 D. |end
% ~3 H7 U8 D, M) a9 b( _! ~& Z3 X& k3 D5 `1 [1 W2 Y0 A9 g
to setup-plots
  H1 h3 c% N0 C# N6 ^# w7 K: j" d$ U# C
set xmax 30
1 C9 o3 h- C( Q' S; S/ @" A
; b- x# T0 L! V+ B2 x
set ymax 1.0
. Q/ @$ q! ]& O$ m7 |2 v
- W8 [3 k7 S; M2 c- h: d/ F
clear-all-plots
1 H* v$ U# x8 X3 d+ r8 U: X0 t! [
1 F9 a8 x8 r& [. }' h; I  p- {
setup-plot1

- f& |7 P5 Y: ?, \4 ~  ~) L& j( E# k& w  F% k
setup-plot2

  x& }" X' x: P7 q4 B# B2 J
% ~* r" b' `- ~# ?1 w6 M$ F) Vsetup-plot3
  N0 a- \* U/ j0 S5 L% `
end' ]+ r' d. J& I7 l
+ o* O/ N+ s9 Y0 j, W7 G
;;run time procedures
+ t, y. _( u: _1 n- B, K7 C4 }) X& m# C+ V+ T, k3 z' L2 |
to go
& w/ K. P5 o2 G  t1 L& u% c7 \6 d, k$ A: @) U" E3 }* E$ |
ask turtles [do-business]

, s% X* g- b6 ]1 v" [+ v; Iend
7 }) u% w1 r) F2 Y
; N: `- r. s+ Uto do-business 2 z# X0 l/ r* z# `$ y, d
7 k" Y7 k/ h0 F4 ]7 q: m

/ F$ G8 ?7 a7 N. W! k9 \rt random 360

; q; N/ D) W, I
  J" {* C# B2 @2 K* ]fd 1
, c9 L4 i- s5 V0 C& V; k6 K

- w" a' V5 B5 t2 Yifelse(other turtles-here != nobody)[
8 n. {& M* B( b/ w% b

. L+ c9 V: b8 c$ Z  ]! zset customer one-of other turtles-here
! P9 e0 d: w9 C+ Z9 G

- G: ^% @* E0 O$ z;; set [customer] of customer myself

5 S' G  _" y; Y" {- b1 q
7 R5 y7 R$ V% }- S+ v1 a* Tset [trade-record-one] of self item (([who] of customer) - 1)  ?7 \8 u: |- o; }9 p
[trade-record-all]of self
( J' {* N9 T( G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! f& ?( t0 L1 r' {4 v
# b/ l; b% L+ [1 T: m; y
set [trade-record-one] of customer item (([who] of self) - 1)* Q8 a8 U7 B5 d" P, `
[trade-record-all]of customer
5 T  T, c8 }7 Z; M6 A- A
1 k" m6 k. i4 k0 l# {0 T' q
set [trade-record-one-len] of self length [trade-record-one] of self

- {# b/ W! }& {# l) R( V% P9 Q/ |
1 _# U8 S4 q# a( X$ _set trade-record-current( list (timer) (random money-upper-limit))
! ]& \# `1 C, F/ Y3 q1 ~

+ r, `1 p* o( ?3 Rask self [do-trust]
' F( P- g" d) ^6 V6 S;;
先求ij的信任度; w/ L/ p  Y# M" C7 M8 @. Q$ l

! V$ r( Z0 K) J0 O+ s. ~4 Eif ([trust-ok] of self)
" C4 `7 \+ t' a( B7 M( ^;;
根据ij的信任度来决定是否与j进行交易[- U3 t, B" l% B+ G" `0 ~* E
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# G3 R, b; \( P, g/ |5 v
6 ^* U  ?8 y! ]# p2 K$ g0 ^4 p
[

* L+ E' A$ P, G0 w. X9 B2 v  r& J1 R9 B
do-trade
2 Z( {, l9 i1 b  a; c
& S3 ]' t' E# B. C# I! A* F
update-credibility-ijl
( m  q/ Q  j. Y- [$ B% [2 g+ E3 B
, {! L7 E, E! N- ?5 K/ e3 G0 Q$ V
update-credibility-list- f: v' R6 r7 K) A4 Y& Q

$ D, n! i3 P5 J) M. C5 k
( h4 m- K2 r' s, i# |* kupdate-global-reputation-list

0 D  ]5 z' e, N+ }/ i  U; f2 Q
6 g4 g2 B% n7 P0 n! U7 t3 D: upoll-class
/ c$ o9 a2 J# C  U: d/ A  H

0 Q6 c3 W1 `2 F5 G- D  wget-color

) R/ V* y/ U5 v. M2 `9 N( P3 m# W" \6 ]' H3 z
]], ?7 h2 q! p! C0 t0 U
0 J$ n6 C& @! w! Y( E4 [
;;
如果所得的信任度满足条件,则进行交易7 e& B  k' Z; G: H. r% L- S4 a

- N+ Q' w6 E! M  `7 \% h/ l% s[

6 N2 n' i# [, Y5 F2 f# F4 t; b# q1 H5 S
rt random 360
6 T# n: ]5 t  \- A- f0 X* K1 c# R

; q/ x. J# @4 E( N4 |4 O( E9 r" R% t: Qfd 1
1 }/ s- A$ V+ U! u8 `
+ Z- g  b% g$ f7 o8 h" @; q! Y7 m
]
% f* f& q3 u0 C9 i
5 Y' u8 c8 @4 m7 G
end

# {' s4 S9 F" w7 d7 k; y" [+ ^0 L" h+ }  l- L
to do-trust
& \8 M1 Q  b; B" D$ Sset trust-ok False/ s* D- f2 U( n

  i: j" X2 {1 w1 o  F/ v/ Y2 D

; h- U7 l/ k: ?1 Plet max-trade-times 09 @  ~  g2 |6 C! T+ e" e8 Z9 L8 M0 v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 b$ \% y# C9 @" D3 j4 }5 qlet max-trade-money 0
# r1 f6 U5 \. v7 \, y" _4 Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 V& c, Q1 t& m! C
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 G' Q4 {1 b4 s; p8 K* V
6 I4 {0 ^8 M; @

9 q, I3 [7 H" h5 B+ Bget-global-proportion9 j9 P: K2 M* I/ a+ M& y6 }5 w
let trust-value
4 z5 d0 P0 n0 Dlocal-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 y6 ^  L, u+ G( l6 Y. ^; k: J5 g
if(trust-value > trade-trust-value)$ S4 v  i- }7 k
[set trust-ok true]
/ P! x( x. E  Zend  _5 i: T2 J3 W8 H
3 R& g) O8 \0 g9 j% x
to get-global-proportion+ {" e1 q/ _. x5 e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 \1 ^) f+ n( d! Y; y2 o3 V, A% G
[set global-proportion 0]
& {4 n' R& _2 ]  Y[let i 0
$ \! {6 d- |2 K! }3 N6 wlet sum-money 0; c6 m; x8 q( ~  E& ?
while[ i < people]
$ j# ^" I/ d, K. J% y5 r- s[
/ Q% n% U3 p" R" [if( length (item i
2 Y1 f6 G; F& d% l  x3 u4 {) p[trade-record-all] of customer) > 3 )
  P7 q; u. G: `% J
[2 d" \  U, w% u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  H! w) X) {* C4 F+ F$ a
]
$ {! w8 }3 h4 Z# q1 g]
8 ~3 r! v- a8 J( g6 v# Olet j 0/ F& [6 ~: W4 S
let note 0
: {/ U! q0 C" z% b& Qwhile[ j < people]
* q& e% d8 Q- |4 A/ N; x; ~[
9 C% F* T4 N* A& Bif( length (item i$ H0 n, I  i& A; z+ b6 R
[trade-record-all] of customer) > 3 )

; A/ n3 E, V: u* p* E. _[
& g. u. t, v! Z3 `- X) Q3 aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! C) {. t$ R% _7 M0 k( l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 @0 r$ n' f( V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 h3 E* o9 R6 g5 m3 \2 K
]
8 ~" l0 E; V1 x/ c! W5 ]% J( i( O8 Q) N]
7 A% C) Q+ A$ ?* d  [- R/ _# Kset global-proportion note+ o% I/ Y6 ~" `4 F6 z
]
+ `* z4 V$ ?# B0 {  n; c/ ^end
6 A' t  K) ?  h
5 }* Z1 G: M  p7 z  S' }; z' Z4 A1 ]to do-trade" V! E0 }" @7 R3 Q5 b0 b+ I+ e6 j
;;
这个过程实际上是给双方作出评价的过程
' ]6 f6 C- ~- W& J3 n; \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' v! \0 k9 C- @. n5 c& n+ {  a+ L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 @, r2 K( J* F& [; X, \$ A( K
set trade-record-current lput(timer) trade-record-current
+ _: q9 b& z5 w/ W6 |+ A;;
评价时间0 ?5 D! Y9 j' Z
ask myself [
& {3 d0 T& F4 [" Zupdate-local-reputation$ f) P/ m' K# |; r1 C# G6 q+ v" k
set trade-record-current lput([local-reputation] of myself) trade-record-current( O3 P  X7 H0 ~; N! y0 K4 ~0 e
]- S, e4 z, w8 {. W. N
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ Y) O8 A+ ?, b) G& u$ E- F;;
将此次交易的记录加入到trade-record-one9 U& o  @3 F0 s9 h0 p# v1 j
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) [3 _1 a+ @$ c8 t" T
let note (item 2 trade-record-current ), R/ s4 ^- Y* c
set trade-record-current
# M. W( i# c0 b9 S  u(replace-item 2 trade-record-current (item 3 trade-record-current))
9 ?. E% H4 d0 E; E+ R
set trade-record-current
& U3 H6 h% ^8 f% m(replace-item 3 trade-record-current note)
3 o$ b( e2 i' Q1 i: ?
# t6 V2 V! j& O8 F2 `; W
' O) @" W2 v- Y' ]2 ?
ask customer [' x- \- }" y& B1 D" P
update-local-reputation
6 ]5 h2 e* m* }$ |3 p/ [& E' Mset trade-record-current4 v) h( V. W+ i& k
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( x: w) W7 i  X8 G$ d; j7 {7 p]
7 X- d! j  r& |8 ~  ]/ J' @$ h
4 R- v7 a6 a4 d" M+ y" U

5 k# E- G7 J; B9 |  d5 x% T1 gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& p; l! c+ n7 H
4 S/ ?) a$ H6 p/ v/ ]/ t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 w) k+ Z% M# I. J& V;;
将此次交易的记录加入到customertrade-record-all
1 w5 R& y6 B" P1 ], Fend
$ N: `/ g; Z  @, y$ b( O5 |
; g$ v9 D+ V" z6 r* r, W: ^to update-local-reputation! `7 A" X. G/ [
set [trade-record-one-len] of myself length [trade-record-one] of myself8 g0 M! ]' ]0 a, B5 r) z
! l+ U; ]( N- w% k1 T- ]

* ~2 ^# h& q% ~;;if [trade-record-one-len] of myself > 3
9 s2 N% h$ I! J5 c5 b( G
update-neighbor-total. u) ^1 m3 D" I
;;
更新邻居节点的数目,在此进行
4 ]" Y4 I/ q2 M! Qlet i 3
. O0 J3 r/ h, z2 J- v+ T  F  L" Nlet sum-time 0
5 m+ O$ s$ E, S4 L; [5 owhile[i < [trade-record-one-len] of myself]' H6 k( r" `* g! J7 p0 y4 j
[4 W& Z' a3 Q. r, l
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 h0 Y* M8 j2 f5 o
set i
0 }$ W9 ^1 z+ d4 s4 g+ {8 v5 B8 ?( i + 1)
& w2 m; z% v  _6 M9 i5 O
]
' n% r0 U. c. v7 Flet j 3* K# ~. D- T. r5 o5 \, @
let sum-money 0# q4 y0 ~1 |9 N
while[j < [trade-record-one-len] of myself]
% d% q% `# R. O+ Z[. ~. N: h1 s: K  o  v
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)
" b0 b. O' R$ Tset j0 P4 A6 y; P. A+ ^
( j + 1)
$ U& D4 C7 R4 f$ ~9 c
]
7 `4 R& Q$ R! z4 Plet k 3
' h" r/ Z, o, G- M$ flet power 0
/ q- K( K7 |; Z# R* A2 llet local 0
: E$ b& C+ C* r3 ^+ Lwhile [k <[trade-record-one-len] of myself]3 W# [* T& B* {+ \! ^
[
7 x$ O, C& p; @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)   W! h# c" I+ X; f0 k
set k (k + 1); f0 Z' b6 \, {8 x- C& P5 D
]
# h0 g  h! q2 `% Xset [local-reputation] of myself (local)
+ o' t' g8 ~* q& z$ n& z1 r- _  pend+ ?2 ^. [  H  b6 O/ Q  C

" j+ N  n0 C1 n  [, b" D  xto update-neighbor-total! H( t( J  i' g

! H/ X6 [4 }' @* D/ Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" Q) _+ O% n4 \8 m+ Z
5 d: _, h  H; q- s6 K6 ~) J

2 ^8 P0 O8 b* e: ]) |5 }6 Dend
. r9 h2 W" Z% j$ d9 @0 d, w( U8 H+ O5 u3 T" n3 u  o
to update-credibility-ijl
0 f  Z2 m  \: l3 O7 a% S
* w5 m9 n: Q, n( u% u5 S;;
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。4 P/ S1 x. ~8 W, w& x
let l 0& V! o  t6 b! ^4 M7 |* ~+ W
while[ l < people ]1 o. U4 l) a6 d! D% a+ j
;;
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# d: _; q2 U9 B, S8 S$ ?
[
' d$ ~& g& O! \let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ \% c& S8 D- i9 v: }
if (trade-record-one-j-l-len > 3)
9 x. k4 R5 h  r$ E. O[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
2 l. J( X5 G$ F& [, J$ Klet i 3
' f6 A( L: T# blet sum-time 0* v+ E0 i& k( C7 ~) F' m$ f
while[i < trade-record-one-len]
# S. V) n! z' _7 u[5 I2 N+ r. ?+ J2 ]2 B+ }0 ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 G2 f) y: S4 w6 Cset i: R' S; H! \' j" ^! y0 K  y( C
( i + 1)
5 E4 T" ^2 T# a' I
]6 i& O( r6 i9 [9 ]/ m: y
let credibility-i-j-l 0
) p0 j1 |9 O1 u; |;;i
评价(jjl的评价)
$ E$ ^1 v0 W2 c5 `- B8 Q: nlet j 3- p0 T/ r) y$ u6 o& h2 x
let k 49 v  F* j1 x9 q' q7 ?! l
while[j < trade-record-one-len]- h( r; l' u( u+ `
[* H  C8 o7 I( V2 ^  d& s3 c
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+ V* A. x( @5 r
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)/ U7 b; U( C9 ~& b
set j
( v! S" L5 `' u0 i$ R: D* H0 h0 [( j + 1)

1 C" @+ _8 y& A! b]
% l' H9 ~, z" z- Zset [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  i  `1 A- `
: e) _) }- }. D" z/ N6 G" C" a  ^
5 d4 j" A4 y/ D) s% N$ O
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! w# M& a. D- s5 ^+ x
;;
及时更新il的评价质量的评价
; m/ O9 u: e9 V9 eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( Z% l  A4 N& j! b% C
set l (l + 1)5 s0 c/ J6 E: o! o6 t5 Z
]! k0 u) h9 b) ?! v6 f4 G4 o
end
/ J2 ]& A8 r! T" ]6 ^1 Y# d/ o# }$ _3 [" E- o! \
to update-credibility-list
- k; X/ V' R' m) ?let i 04 t# J" C7 K$ d$ M! [
while[i < people]4 t# ?6 r- j* i% v! c
[& D' n7 B& }4 E6 i- W- w
let j 0% z8 h' D$ Y1 d9 p. M4 Q6 l* d
let note 0; T6 I. A3 O+ f& c3 [( W) m6 V) q
let k 0
# K/ X$ J1 f* g6 n;;
计作出过评价的邻居节点的数目# A' b5 Y3 Z# i; @$ H1 z
while[j < people]
; p) u0 k$ h5 d& ]) {[
  U$ m" e7 c3 w, j! @& Aif (item j( [credibility] of turtle (i + 1)) != -1): f5 t% m/ r7 q( L5 j2 z  Q/ i
;;
判断是否给本turtle的评价质量做出过评价的节点. _" J" B+ N; R9 J" Y# i1 j
[set note (note + item j ([credibility]of turtle (i + 1)))
/ q; N8 Y: n* [* v4 V;;*(exp (-(people - 2)))/(people - 2))]

; {( B7 U- \; N7 S2 R3 aset k (k + 1)3 p& }$ W, q; @+ z4 }1 F. y
]) w, r5 J4 \" w# ~
set j (j + 1)
7 i1 r2 D' u. p" ^" u]
$ Q1 a$ O9 |' g1 E+ K9 Pset note (note *(exp (- (1 / k)))/ k)- O: S2 Y* V. g: @) c5 R
set credibility-list (replace-item i credibility-list note)
# R$ P4 w( G: C5 }/ fset i (i + 1)2 x( @  M! _6 v( G
]
* I8 c2 b8 [+ a4 Nend' P0 `' }: _  B' F! Q! c

& Z& j0 d: I. H$ ]# D  Ato update-global-reputation-list
3 z5 V/ g6 \# O  Y5 Glet j 0
2 S3 s( y! C# d2 ^, Pwhile[j < people]0 S9 Q$ C& i9 U) [6 V
[
  Q' U$ X3 f1 ^. ^. v2 j6 [5 Nlet new 0
. s1 @' \5 W1 D! h$ i9 i. ~;;
暂存新的一个全局声誉7 {) \- G% i/ f9 e9 N+ A1 Q0 U
let i 0* k4 Z) y; j$ ?. S1 S$ g
let sum-money 04 l2 l7 B; _) ]3 K
let credibility-money 00 P% s, d5 v, ^( |; A% x+ P- n
while [i < people]
0 j2 ^" q, P# \; D( j% m  v[
8 [4 L9 e% t% s' Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% F$ L$ w, H( {+ c4 K( b* G1 q. Pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( R) r9 m% n0 c4 M
set i (i + 1)4 Q, ~0 n9 c& f) ~5 [4 V  K
]
; l" Z$ O% {  F. H% N* j9 |let k 0% D& ~( E* k- C$ Q6 C
let new1 0
: R# d$ L- M9 w% v& r; B/ T/ awhile [k < people]
) m  E' [5 `% b; y+ I: G( [/ i[
0 @$ ~* d! I3 Bset 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 b+ S% O% t0 U" h! B8 C$ \! ~set k (k + 1)7 ]% |! h9 H! `6 u' U
]
) S7 F% D5 W, n$ y  Y( H8 wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % r2 X3 M7 I  i8 o4 A$ Z3 d6 m
set global-reputation-list (replace-item j global-reputation-list new)
: f5 t7 g% A+ _- ^set j (j + 1)  [0 E( B5 i: z4 Q7 {
]
; G  M! l5 t- ~6 r: uend! @! Z! l4 u7 z* M

# ]$ l( l8 E8 V- D$ ?1 W$ ?4 A  H: o& D4 w, P: |0 W
5 L3 t3 y8 f# e$ @; g8 f
to get-color+ D, _- ?( B* m- I. ~; |

2 y8 \5 {% E. ^  cset color blue

) y, c; D- I# uend. J" H, o- |5 J2 ^1 [' I

5 i6 ?4 K8 t+ uto poll-class
3 j6 _- I+ C5 P+ r- v( Fend; \% K5 V( v& W

! z; [2 d( E' X, Oto setup-plot1
0 l/ a1 `) y9 A) ?. V- J! B: Y# e
set-current-plot "Trends-of-Local-reputation"

: u3 H; |6 d' ~7 T7 X7 J/ i& R, N2 b/ w/ u0 I
set-plot-x-range 0 xmax
0 X  G$ z/ I6 V+ s, v
) i# t% y9 @( T1 {( d9 u, Z& i+ W. U! d
set-plot-y-range 0.0 ymax

' f) X4 @* n; y" ?$ Vend
7 P4 F" y4 }- ~' t8 K# R7 A# X- F6 B8 M% U& e! w8 f
to setup-plot2
3 ]5 y) B& y* @  V* s- |. O" l0 T% x; x7 ?$ G5 d
set-current-plot "Trends-of-global-reputation"
( _& k3 E3 A' }6 G

8 g  m0 T( \; H, s$ _4 K* @5 `set-plot-x-range 0 xmax

, M7 {. A* P7 @2 W$ V! H, ~! B. j) x, d. X; q
set-plot-y-range 0.0 ymax

: e. x# h7 j  y# kend
+ M: g% O" b2 V* J# a/ |
: S/ _6 J0 D, M: q% i* l) {to setup-plot35 V% D% h" i. k' U5 M
% ]" h5 |: n, p& Z9 }1 ]" x/ l
set-current-plot "Trends-of-credibility"

0 i1 u  a2 j( m3 x! u! S5 A+ c  K8 N" t/ R
set-plot-x-range 0 xmax
# L" B/ q. x0 b% a1 X: j" ~

# R0 v& @6 ~' h: N; s/ K/ _set-plot-y-range 0.0 ymax

7 _" H( g: I, a$ p# Tend. }( Q6 t" l1 O
, f3 O2 Q. Y8 n1 ]$ T; P
to do-plots
* w, g3 w5 G% nset-current-plot "Trends-of-Local-reputation"9 u+ S5 j8 D7 p! z# Q9 P1 l
set-current-plot-pen "Honest service"$ ?+ q  C8 ]; Y: Y$ R' K
end
+ b8 C4 X) R$ d# A" j3 y' t3 l  M: A5 e
[ 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.: @* V. k' c; H& W3 W" R0 D
7 x$ O) ~# k, A+ G9 l1 E4 T& A9 {$ S3 U
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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