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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:
- X: ^2 H( Y3 `: Ito do-business   H/ R! X3 D. u
rt random 360. v" o: [8 g$ q( J
fd 1
# |9 h- |: _* a! X5 P ifelse(other turtles-here != nobody)[
( x& P9 n& p8 x) c& s, a- 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.
' j2 R/ s# x) N9 }& O- m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 R& M. c$ g3 _% V7 d& s' }/ z* |6 |* r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% q. u2 c' c2 m9 B   set [trade-record-one-len] of self length [trade-record-one] of self9 X$ u% \5 T; h: M
   set trade-record-current( list (timer) (random money-upper-limit))5 T+ Q  E) Y$ _
1 F, z. a5 _. W* J: |. y) I
问题的提示如下:% l" d9 r7 E, L8 U+ y( |

6 H" Y, k" T( y1 j0 Cerror while turtle 50 running OF in procedure DO-BUSINESS) V  S3 U# v+ @# q
  called by procedure GO
4 N# ^3 n; W" v& T9 t; N- LOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ [9 D' C, z# O" ]6 m
(halted running of go)
/ W3 b6 @* |% Z# m" R* f% U# D
/ G; f, k3 Q0 \2 g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~~
1 G8 e& p& A3 f% w8 P1 p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' B& X; e8 h+ I& ], U* J, V2 s
globals[1 R) @* e' t( l; B* o) x7 s
xmax
" g8 b/ K) f% Oymax8 b1 P8 ?8 R' |. i3 J
global-reputation-list
" l: w* z. A' u% ~+ j3 a6 U8 @* P/ C
2 {& {; S% R) V, _- E1 X7 L;;
每一个turtle的全局声誉都存在此LIST
. \' }$ S4 F- Q: q2 w1 {4 A" ^  ycredibility-list: o3 f% z% @7 m8 c$ `( ~
;;
每一个turtle的评价可信度6 |+ z7 @( I) P
honest-service9 ^3 ~! y0 P4 C! h7 v! _
unhonest-service
, V5 H# u8 `$ }9 P/ q8 {* @. f9 Hoscillation& O4 n- b4 z9 I7 ]) f, `
rand-dynamic2 N- T* @$ W; ]
]0 u" p* [! r+ r! A5 u5 e7 J
( m6 n  k1 ~( I
turtles-own[
  F' w2 c2 M( M8 _6 V, X& m* g+ Jtrade-record-all1 W( r' @9 G" |! u, r$ H
;;a list of lists,
trade-record-one组成1 i* M' [/ n) x' a6 F, M  T" G  g
trade-record-one. @5 l. e5 d  w  ?3 }0 Q" J/ G2 V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. x; W& e  Q. s1 }& K. p
3 }; y/ J! d* z3 Z8 F1 J;;[
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]]' V- x: v7 i3 T' @
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]
( h9 H0 d( `0 U( _  C0 Ccredibility-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$ w- K
neighbor-total; L- ~* r0 ~" a3 w* p0 ^6 \
;;
记录该turtle的邻居节点的数目
5 {! u! T4 ^4 R5 i  atrade-time9 y1 B2 d  j* P# h$ i+ M4 J
;;
当前发生交易的turtle的交易时间7 v! i: i- ?& `
appraise-give8 z1 J& h+ e& {: ^8 U2 r2 i# w3 i
;;
当前发生交易时给出的评价
& ?1 l/ `# S) X4 f3 J( bappraise-receive' \0 @, e1 M0 c9 ~/ S: x
;;
当前发生交易时收到的评价
( V- s* N; Z7 {+ l9 [$ Gappraise-time. K. R5 ?4 C; d2 m5 f
;;
当前发生交易时的评价时间! M2 s) \* g4 n! t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 H# V3 B6 \3 b0 Y' Ttrade-times-total% ?4 k8 J7 k2 Y& n; f$ V
;;
与当前turtle的交易总次数* O" \- I: W3 W8 p- e
trade-money-total: o' N, J" W2 S" u5 E) k# u
;;
与当前turtle的交易总金额
. t- k' q* }) n9 \* V$ I% v2 Ylocal-reputation0 c+ u; Z. h5 `. m. {; t
global-reputation
7 M' @, u1 L$ W3 b* E2 t, }credibility
- D& ?7 E. x  ^) E;;
评价可信度,每次交易后都需要更新
3 A1 K9 u; ^9 h9 E+ }( }* [credibility-all
9 [' ^# N5 o$ H) 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
1 v) j' [, }2 X5 A6 Z& z' l) {" n+ N- [* ^0 R
;;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
1 x$ W  F9 k; U( u6 B  j- lcredibility-one0 I' F% a* R8 x( L
;;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% P9 g6 ~3 x% k& U
global-proportion4 l" B/ [. f' }& l' H, `$ ~
customer
/ m0 |7 J) }+ Ncustomer-no0 g/ G/ g7 L- `( _
trust-ok
  f% ^" n% Y; u! Strade-record-one-len;;trade-record-one的长度
4 F3 a' m- I9 X; m' ^9 ~]
* v8 W0 A9 U( E. Z
2 U7 {# ]) n5 e* E+ ^5 x; P( e! t( D;;setup procedure1 a1 n/ {2 h, ~" K5 C4 Q" r. ~

% d2 t0 T. x! Hto setup
; A0 ^( o2 @+ k# K/ W2 f& n1 W
1 z6 R7 B: V2 @* l% q+ h* T  Fca
+ y, o" A( z. p8 u# X7 o
2 s) U6 C2 R7 a4 K' w( {
initialize-settings
; Y$ ~, ~8 \4 W& |/ q7 o, D* V2 N
, s) ^7 r: O, d  x- V- ^
crt people [setup-turtles]

4 c7 e( F# r: t9 b3 `6 V7 ^# k8 i$ L( C4 l
reset-timer

$ U6 d2 W1 i( T2 @3 C+ [
4 p; s5 U. L6 {poll-class
% d: O2 p  Y  m1 F5 r! @3 W
- [" F4 z8 B+ z# V
setup-plots
! h1 Q# E& u9 B3 b$ i
" U: l$ ]' X$ K% e: V# `' A9 s0 E/ o
do-plots
9 P: q. U! ?+ n3 `& O
end, H& m. J- A* s& Z' T
9 Q# @& ^( D) N" `1 Z) X7 Z. O
to initialize-settings
, p% Q; M! M3 Q7 _, Y- Y) ^  ?; b7 s; q3 V
set global-reputation-list []
6 ~0 t1 l! Q; Q  y

5 v8 q% u& v2 ]; D( W8 k) Fset credibility-list n-values people [0.5]

; z6 t# `3 r1 W8 [8 q% Z; D" l" d3 R  Z5 j  Z% s
set honest-service 0

+ W9 @! P" f/ _' P. F& ^) L# |& @; ^4 J, S4 [' j
set unhonest-service 0

( r: G, B2 D; f* R  j8 @5 ^, U3 W+ ^3 d8 O! p( D
set oscillation 0
1 C* L( c9 }+ l6 C

3 D  d( t; C! K- Xset rand-dynamic 0

% I7 f* @2 g# G; q& _% z$ {end- {! e- \3 S/ `7 K/ F
5 b, A) l, Y+ D4 E" _* K" e
to setup-turtles
$ @$ c3 t) G& b& bset shape "person"6 A! L1 _7 ^3 }3 B" K+ h9 ~
setxy random-xcor random-ycor
* D5 M- y' |% `( T- [( \set trade-record-one []1 F6 b3 L/ }9 Y: S6 r% K
1 f  q7 p4 Q6 f! Z
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 ?0 V  F, o5 r$ n9 w

' ?* i, P0 Z) c/ v% W- n# Yset trade-record-current []+ H- g# u+ R' Q9 F  `) ?4 t
set credibility-receive []
7 \, B) t9 E# x- S9 j; ~set local-reputation 0.5- X2 e. b! `# c, h" V/ d0 r0 O+ e
set neighbor-total 0
$ h" Q  X- {. y+ ?% M4 b0 q! O1 ]set trade-times-total 0* o' Y& `* k) l( s. i
set trade-money-total 04 B  w! Q2 ?, D, }: k
set customer nobody
: U& v5 H! p1 j" Sset credibility-all n-values people [creat-credibility], ]5 g, Y6 m+ E( J
set credibility n-values people [-1]
0 V! [( {8 j0 g, g1 o9 a. y$ vget-color
$ ~' M/ O1 A# q7 r

* A, _0 N9 Y5 d: [2 F/ Aend
3 b! [3 Z" c( n
# M  e( J- \% S; R. L' wto-report creat-credibility
4 c- m) K( e4 Sreport n-values people [0.5]) R6 \. ^; u- c6 j4 W6 K4 k+ I
end
& J* i3 d- P8 ]  r5 I# b1 e$ X7 L* Z# r; o' ]5 Z, `* p. @, [
to setup-plots
# ]5 r* m" q& ^. |8 Y$ r
% ~$ W& e7 @$ E8 Y2 Q' ?0 J/ f+ ^4 oset xmax 30

/ K) q/ x( C- K' z. x' r) k2 q$ x6 ?+ ~6 n
set ymax 1.0

% e* M! x$ X1 S( `- l: u3 \: _: G, S, M/ l2 K- T
clear-all-plots

  S0 V) s4 @+ d* }9 t0 L/ U; L6 e" L) Z! C9 T9 r3 h
setup-plot1

" U9 C& n8 w0 Y8 F5 S
/ y+ I; D& ?, B1 v, hsetup-plot2
1 P" B7 b: \! z" P: e
6 L) E: n& {5 t& V
setup-plot3

$ L7 L, P6 j+ f& d* M2 Wend. g7 B" I' G2 s  s, y" H! M& U8 w

" H" {( P2 n/ V. n7 K- n;;run time procedures7 k5 c7 k' u9 U* {; @

- {- P& N: R/ o" uto go
# d" T( T; U& o$ q3 w! Z. j8 Q6 M
ask turtles [do-business]

1 Y, Z" j: F, `1 A( pend
/ `& W- C. `+ i/ D5 n6 J$ |3 @  @) ~
to do-business * I& I( P7 }! N7 v5 _* s

6 v5 h' w* F9 i# c
& W9 ?7 e4 X/ ?) Rrt random 360
) o4 D- L6 K. |$ q, ]4 p/ `; c

. a# g( G, C( g1 d; hfd 1

3 a$ l; p- d5 ^/ ^7 r; E1 f/ W- p* ?( M) n' x
ifelse(other turtles-here != nobody)[
3 n( x% z- X* Z9 A( ?6 a( X+ f
# O9 I9 L# V2 q$ c: X4 k7 I
set customer one-of other turtles-here
7 ]9 O. X. W7 U" R6 p' E; n; |
8 s6 x# h% G7 ^& e2 o) u0 f3 V
;; set [customer] of customer myself
: R5 a0 T* u& f  v5 y
3 |$ l, m8 j8 C0 l$ y  s8 i" h
set [trade-record-one] of self item (([who] of customer) - 1)9 J( k0 a- E# v
[trade-record-all]of self
7 j$ E: H$ V8 h! T" u+ {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 f( d* U/ j' A7 t3 z: f3 C0 X( o! Y9 d' u- M2 k( B
set [trade-record-one] of customer item (([who] of self) - 1)
5 r* P' Y* V) V- J: ]" {) T9 Y[trade-record-all]of customer
$ a( R, T) J% p
& A: J5 B( x9 T7 K7 V7 i9 N# Y
set [trade-record-one-len] of self length [trade-record-one] of self
' w3 s- P3 |5 a0 d$ Q
' B) U; A' Z* x$ @# N3 k5 U
set trade-record-current( list (timer) (random money-upper-limit))

4 `' H& }, U7 T7 `# h4 n" B2 k, U. q: W! m
ask self [do-trust]
; B+ ~- f4 w% u, @2 k- Z;;
先求ij的信任度
* w* ^% R+ y  C+ \4 S* P1 M9 F. w' ?1 `/ E  Y2 k; E- }9 d
if ([trust-ok] of self)( s1 z; R' c) `' P
;;
根据ij的信任度来决定是否与j进行交易[7 b: E6 V+ a! s, }% c  o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 j, k6 i- S1 I# Y3 C5 j
  r  q" u# m# w% P! I! l
[

9 C  l! m8 e5 ^7 @# _# j6 t6 K/ G& [) x/ J& {$ a
do-trade

1 n. _- s: X( O, }8 H' S% d+ K- m4 y$ e1 b( ]
update-credibility-ijl
! {+ a- ~0 {# }0 g: Y* h8 z* Q

& V: s1 Y0 t1 u  E3 e* Gupdate-credibility-list
2 A, X; M) P3 `! ^! t, w
; m/ n8 L5 Y& q$ U0 n$ c  k* H

) H. A. C* \% Qupdate-global-reputation-list

* E7 q/ T3 K# j  |. x: Y  P8 Q! Q
poll-class
, {6 D% l' Q- ]/ ^$ N3 s' C

: R6 X% h, x: e8 a9 I, v" {) U5 Eget-color

, `$ D( V+ ~2 r  E; G
0 [: l# }9 H$ c* s4 \5 G% l1 I]]% q$ I! N- B7 S1 o- B

' R; B* M( i4 U! }' }( y;;
如果所得的信任度满足条件,则进行交易9 [, {3 [! E9 C% \% }' f' n
) R& j1 D# E% v& j' \& e5 I
[

5 q2 i* U- m# U9 t( S) V% O+ B' l9 P1 R* V- {
rt random 360

  t4 i1 s6 r! e/ K2 f$ J8 r+ j. T' M+ `0 v" G
fd 1
$ F" x+ \. {! u) v: D
; H& M$ Y, m( F  q2 m2 R( O
]
+ A" c" p1 G$ f1 A) l8 A

+ b) |0 V% O) {; _2 ?end
7 q) [, F( X+ L& d  B# e" X, J
* L3 k0 u* x! W- n# @
to do-trust
  {5 m7 D* W/ @. q& t  C) Nset trust-ok False
1 G1 ~1 K8 N5 j4 m' [1 U: R  q# m! w" _8 f# d2 `; n7 O
6 F  w- T# ^' n
let max-trade-times 0- m0 Y0 H4 ~, m" b* z, m; x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: Y5 J  w1 @2 l0 k3 M* x- \: \let max-trade-money 0+ z6 e  p! T  S$ L  i, S6 ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* }- J8 B% r7 d+ I8 C$ C" Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* s+ j7 w! O5 l' K( N
6 s, p7 L: Q3 R

' z) ^$ S% q% j. \8 iget-global-proportion' V! _; c& U! u- z; a7 u
let trust-value4 }; f  ~+ z- B
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)

; d: r5 x0 J) ]/ r' F8 f# H$ s% pif(trust-value > trade-trust-value)
: N4 Z* {  y+ Y( H[set trust-ok true]. v6 w0 L0 a6 G% u
end1 S& a1 Q1 c* {
/ {9 L( D! {' W. P, Q; Q
to get-global-proportion
% @2 B. G3 ]1 A! |ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 i% ^( X6 m; `. w/ S
[set global-proportion 0]1 E* J( q4 t8 C. G/ [
[let i 08 M. _2 i- y# I' b) D, A
let sum-money 0- R1 g6 r7 F; w2 y. m
while[ i < people]2 Y5 R0 a1 D  S0 o8 h
[
8 ^# d; }! `. p" i6 X- Vif( length (item i
, \" K5 g/ j# e( Q" O0 I  z[trade-record-all] of customer) > 3 )
0 V. Q! C3 B. p+ ]+ }0 j
[# i0 q; V# w4 i, t( C
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% T* E. Z& v& E' z! u! L+ u1 [6 d
]
0 O3 n0 l* r1 s" b$ |& ^]  u- k7 ^3 Q& n
let j 0+ o: Z& L$ T7 U& M/ z' Z
let note 0" y: a4 q4 Y! _& j, O
while[ j < people]/ ]" S: l4 ]" P. p" ~- |
[: @5 l8 F6 e3 p+ R( D1 y; D' ^
if( length (item i
7 w' m! Q: L0 g  u1 G* |[trade-record-all] of customer) > 3 )
8 m/ C- o4 K  l8 f3 m2 D  J( k5 R
[# Q3 u) K  l7 }! X0 K. J1 [/ Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); S) I8 x, v' R& {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ f' c$ y, p, N! O' U; h# E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ K6 W0 v  d3 Q0 `
]
/ `$ z6 z" p7 w4 e6 l]
9 L( }: p( c9 Y, x8 |9 uset global-proportion note
: j( l* d/ |1 w- P( o]0 L: n: v$ |/ M( J% o0 L
end3 m  L5 t* X$ u( `  r

2 j* c; R* s0 g0 H" h- Zto do-trade5 R4 ~* t3 U9 I3 R. x1 R
;;
这个过程实际上是给双方作出评价的过程
; P( b' H" D3 |' R1 `# Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ t/ s0 `  ?# v/ r9 _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! O; H4 V- h2 ~% i; V4 m5 Rset trade-record-current lput(timer) trade-record-current6 }3 P; h- N2 H: c3 [# @- J) Y9 i
;;
评价时间: x0 E1 B5 U7 M5 [! z. @
ask myself [
- u$ R5 m, C% Q1 gupdate-local-reputation! E0 N( V$ f+ O
set trade-record-current lput([local-reputation] of myself) trade-record-current8 e5 E4 T6 N4 Y, r" p2 w  @, J
]
8 Q( @* i% a. J1 u+ c+ Hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 K: R5 O  z8 ]4 ?
;;
将此次交易的记录加入到trade-record-one% q( P7 `) y1 @- s& L% O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& Q1 J3 Y/ j" @& x% b3 E  d% z: |
let note (item 2 trade-record-current )/ g) X& P& t4 H: g/ l# ^* b
set trade-record-current
8 h4 I4 n# w; L& U8 i; u$ T(replace-item 2 trade-record-current (item 3 trade-record-current))
# o1 a( a8 a. a" f& ?. S7 V# p; X
set trade-record-current
  n$ o: I# v, Y& Y(replace-item 3 trade-record-current note)
7 t. e( ^/ h0 L1 V! x  K. m# K* h# V+ r1 F

8 B! ~7 [0 w( A! u: oask customer [
/ c1 {3 v) S4 L1 o) ^% u6 t2 z* Kupdate-local-reputation
# H/ P4 Y" @; ^- ]set trade-record-current. j1 f/ a( h: F0 b  E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ }# Q* r1 a9 f8 }  E]" i5 w4 s3 i( i1 s1 ]  j& j9 T0 r; d
& k2 I; T8 ]. |3 Q/ w

& Y9 O- ?% q: ?set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 ]& j' K9 q4 v4 P# d

3 X# K$ t- Y  \2 t- l* g  [* R7 iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): t% k$ [( N& H5 ?! \9 P9 n0 r
;;
将此次交易的记录加入到customertrade-record-all% v: Y8 T5 Q% ^# e0 y9 f
end
/ v' x3 i3 f; w3 g+ y' X" D! k
' J* I) X2 e+ Nto update-local-reputation
, |. T0 ^& H  i& Y/ a1 ?set [trade-record-one-len] of myself length [trade-record-one] of myself: Y" z% X1 `, x% B. g& F9 A

$ C4 B" p' }8 A8 A( I
. P* g# d; I: _$ |7 a1 t;;if [trade-record-one-len] of myself > 3

  |& Y8 z' K6 C, Z% d8 s# A5 {; Oupdate-neighbor-total9 G/ O! @2 U: M1 l
;;
更新邻居节点的数目,在此进行1 x2 p; y9 V( z3 a/ q$ F
let i 3" m$ {. ^7 G6 k7 m% V7 o+ G4 K8 s0 y
let sum-time 0
0 r  a5 R2 m" j5 c) xwhile[i < [trade-record-one-len] of myself]/ N( L/ X2 u# n! x5 K) d
[
& C: ^& f' m6 Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* q* u; l( y3 U: ?
set i2 @2 o4 I4 `6 w) O+ P) {' K3 _6 p
( i + 1)

8 l3 Q- `7 }% e& A]
' p6 T0 O( q2 Nlet j 3
) _) n1 t( {0 ?% t& _% Vlet sum-money 0
8 O8 X  f& _8 h4 g! Owhile[j < [trade-record-one-len] of myself]
1 ^, N7 u2 M: q9 i[& n9 u8 X" W6 y# g& l* c% g  V6 Z
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)
( d; q$ p4 d5 z( ?$ k, F5 ~$ q, H- j# Jset j* x) G; L2 B# E( S5 ~
( j + 1)
5 T* m% q% G5 V& _2 `: b& c* \) r
]3 Z$ F, }  x& k. h
let k 3
. D# Y- K0 Y% u3 plet power 0
% y2 A* W6 m2 M& {+ K8 rlet local 0; ?2 o  C- `! R, x9 i( w
while [k <[trade-record-one-len] of myself]
4 x! z% U- B4 Q4 E5 {[& `: J9 ]6 p! ?) b$ x3 D7 g
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) % F; g9 [6 q3 s8 S5 c, I4 ?
set k (k + 1)
. M: e. p# E+ v) M3 ]$ E]& K/ }% D9 Y% N  G" L& \
set [local-reputation] of myself (local)1 s! {8 r2 \" m4 L# G, j
end- C& N+ g1 _. I2 u4 |# i. p& c( A
% w# u5 p) N! l- B: X$ P
to update-neighbor-total1 G% Z8 `. F' }0 i( g2 q1 S

" G0 ?: g4 p* C9 ]0 Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  u7 l; e7 \& o  d
# a+ f7 v: H3 i. H' [) g

- B1 M. l/ f; _9 Aend
" L7 O3 n0 E+ P# p1 B# g! O( o9 t4 G  w& |: W4 a( U
to update-credibility-ijl
! O' l5 A5 u7 t8 r; y8 _& {$ @& Z& ~) e. ~% S/ N1 D, t
;;
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。
) Q4 S, Q: h4 y, r- O7 @let l 03 s( i  A0 |* g6 h, @
while[ l < people ]7 E, l# P* w- P$ U( ]
;;
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3 \/ h+ J" D- a! T, v) \
[
1 m3 m2 l' U& [let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 j- x! ]* j" O7 T* w' Z+ E- ~if (trade-record-one-j-l-len > 3)" e" [4 l, P1 i- {
[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; [0 e- O* A$ g+ |2 b+ Z+ _  p
let i 38 ?1 o- r2 Q% U% x! F# O- O/ G
let sum-time 06 N7 F+ a  e) Y& K( n1 c
while[i < trade-record-one-len]- Y! i. y5 ?1 N' z! z5 ]3 @/ z
[
9 t# M* s; r! u& o) _( Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) K' _3 B, I& B& y: V* Bset i
. j" L& B/ B, Y: E' \+ @) {; s( i + 1)

( v7 Q$ W8 U) r7 p1 Y! Q]
* U3 V" K% l! |7 ]/ _) z0 Klet credibility-i-j-l 0
/ {$ J. M$ x# Z. r! W0 X;;i
评价(jjl的评价)
) S5 J( j  n$ P" l% X& |* Tlet j 3. a' i: V5 ]+ k4 [
let k 4
3 K9 n2 C  l9 h/ M, r3 uwhile[j < trade-record-one-len]
9 k: }( b, c% V[
, C9 D* v# A- A" w8 `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+ p0 E' g% G3 Fset 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)
) R! c+ Z- j. M# G' D3 wset j
0 T6 d; c* |% M' w( j + 1)

2 R$ _& \; _# J/ C- c]
: t! u, G# T2 Aset [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 )); S. Z% ^4 n; I5 ^
8 B/ ]2 R2 a" K6 ]  }1 n* o
; B9 {, |7 w0 |) L/ S
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# G& G, K  f2 _
;;
及时更新il的评价质量的评价3 Y3 c8 d) [3 F/ w7 q) ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 I" G' R7 T0 U: z
set l (l + 1)) s% k2 H6 l0 u3 x6 S9 W% m, W
]
( {1 Y# h1 q  [" nend
& V+ \' o$ i* l! j  i& E; a: R6 z7 m- m3 X; V5 |$ X+ I
to update-credibility-list4 b. s% H+ o( @! |! V+ T
let i 0
8 f. l# I/ c0 F: n+ M+ g$ Zwhile[i < people]
* ]1 H/ c0 Y9 @[
- i$ b0 V" f6 ?  ^let j 0+ K; Z1 k9 J: i
let note 0/ q6 I  @7 B$ E# U; |, q
let k 0' ]4 h7 k- q! B6 f2 r" z
;;
计作出过评价的邻居节点的数目0 S! a# _( I0 k
while[j < people]9 j4 y- w, n5 S' O. h1 f; @4 M/ z( ]5 p
[) Z2 b9 k+ V+ c2 y* s
if (item j( [credibility] of turtle (i + 1)) != -1)4 f5 Z; g. a% e: Q" {
;;
判断是否给本turtle的评价质量做出过评价的节点! N" O- Y2 N2 D& c& I! u) ^
[set note (note + item j ([credibility]of turtle (i + 1)))/ P/ z% H5 l7 S" I$ Y, p; t: u7 P
;;*(exp (-(people - 2)))/(people - 2))]
- c/ H: l* ]4 o+ s) P1 X+ p) u9 q. Z  }
set k (k + 1)4 Q9 v8 y% b6 U! n) j0 a1 l
]
4 v' d8 o3 W! f# kset j (j + 1)2 O  F* J$ A5 {) N) l
]
9 Q! e: `! Z1 X0 n6 p$ H  `set note (note *(exp (- (1 / k)))/ k)- v2 r- q  r* h' _( W; m
set credibility-list (replace-item i credibility-list note)5 b+ h" j3 c3 i
set i (i + 1)5 W4 ?5 B2 Q8 Y  W- N' C
]
: Y/ A7 t( e% _  W" y4 B" c; hend6 Q; q/ }" ?* \) X) J& z! a
& P6 x0 v; z, ?; L) `" A- K1 d  R
to update-global-reputation-list
- P! E" g3 ^1 t+ `' T: o9 ^let j 0/ q  S1 D1 z& s5 j( }/ q. H
while[j < people]' N: N& \6 ^! A, t
[
& ]- I' F& A& L- a" a" ^5 {8 {" ?let new 03 }0 F2 @7 `" a! t
;;
暂存新的一个全局声誉
- A: z  l. j2 Clet i 0
! z5 P9 x9 u' ~8 [9 b" ~let sum-money 0
- l! u: P& ?/ b" Y3 tlet credibility-money 0
; ~6 v3 k) R0 n  _* w3 f2 gwhile [i < people]
6 Y. L7 E/ s9 X# C5 K$ A[) ?' ?* h) R. Q+ P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 h9 w9 Q) \; _1 [/ E0 }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& d( A: \* h4 nset i (i + 1)
  O1 W# w" S2 i- |' `) V]* h  j, g( t7 n: g; k! K
let k 0
. G! e9 ?) y: d' ulet new1 0
5 @  s' N3 A1 A5 _3 u" G# ywhile [k < people]+ A( o  p9 O8 |2 d- P9 @9 v
[4 n  G. f: J) ]% t7 q+ I
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)# U! o- U% g: `7 C) Z- i3 \
set k (k + 1)& A( S' ?4 H8 r" \6 V4 A8 U
]. t& g& l" Y+ \3 {
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 S: f1 U- i# d4 v+ M8 j. n
set global-reputation-list (replace-item j global-reputation-list new)
! V2 w+ Z' N1 g6 kset j (j + 1)' I) K. D  u5 t% g* [/ D( ]
]
( w! T2 J3 G* L6 m0 R; hend( e8 }. S, T  \# {8 U

5 d  g" d3 \1 u$ |& ~  C4 ?( y: @6 Z
2 W0 p6 p! O: [# L& c: w$ ~
to get-color/ J! s$ ]) J; X' ]8 x: B
1 E6 j% @( L" _: u8 e; H7 ]
set color blue

4 i+ c  u! R9 X( r& ], |0 Z# j; Kend% r+ P8 U; [$ |8 l( ~8 c
/ M: r; q- T6 p! Z
to poll-class
6 m( t/ c- @! S, ^8 t- cend# M; v' N2 \* a6 M5 q2 b
8 t! v( @- ?7 A0 A1 p/ S4 @' i
to setup-plot1
$ i( @3 A* S1 m9 R! X: h6 y0 s( z  @3 B3 ^
set-current-plot "Trends-of-Local-reputation"

/ {" B) o1 D' b8 v
0 N, @4 g! X4 v# n$ X/ Lset-plot-x-range 0 xmax

; T7 U$ q. x2 u6 R( K  w6 H8 a4 W( g* w8 e* `
set-plot-y-range 0.0 ymax
- h+ M$ }" Y# d0 L$ R9 U) I1 j
end0 e6 n) K8 {$ s+ c& }3 z  v

4 ?3 @, h! M! K' |to setup-plot2
4 C+ h* [  @- Q8 o$ K& `. u7 t* f( E1 I8 N4 D7 ~* g4 j9 N
set-current-plot "Trends-of-global-reputation"
4 B7 g, ~, m' j6 T# a# T
& `8 x& p  |' w4 u  C$ V
set-plot-x-range 0 xmax

% b. q: n% i% [- I# I$ z' A; m+ H( S+ o, F% i/ L% P
set-plot-y-range 0.0 ymax
" Z8 H* l; `( t2 q6 N/ c
end
" o) s' `* a: a2 H# L
* Y: `' ~/ s+ a6 xto setup-plot3$ S6 k5 @2 N9 u% F( m1 @, o

+ P0 G4 f% W8 }$ A( l  ^  kset-current-plot "Trends-of-credibility"
) V6 Q2 A6 S& G# B1 Q1 l8 @

  c) y4 C  I+ H3 ]: Fset-plot-x-range 0 xmax

! `. S' H( j; }3 ^, t/ O* v, s
& h% }2 _' _( @  D! uset-plot-y-range 0.0 ymax
; P7 l4 v- w# u( n  Z: x; Z/ l
end
$ z; ~8 A8 x/ P: q8 `& f1 _; k; _$ O9 n
to do-plots; }$ \. J# s) M# S3 o
set-current-plot "Trends-of-Local-reputation"- `' \& a4 \: x+ W2 `
set-current-plot-pen "Honest service"5 o9 M0 \" n+ n7 x& Q; W
end- N: a" V: c6 ?1 k. J7 S

: x. J- X& b# A) ^$ B5 o[ 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.* t2 P8 K* ]1 c6 V* X

2 B2 a( J" c" D- S6 V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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