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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:% }3 K0 n3 `: Y0 o* I6 b5 P
to do-business 4 k6 V! {8 N  J0 v0 R6 c( O
rt random 360
: R9 Z/ {; M" T8 |/ A/ B fd 1
7 C, J5 [3 \' ~. g0 k ifelse(other turtles-here != nobody)[
, o5 ?, T5 F! B1 s4 s! l9 C   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.
) ]) a5 i% E" z" |* T, x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* t0 `5 n) Z; Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# W) G0 ]5 O! _" b2 @   set [trade-record-one-len] of self length [trade-record-one] of self
0 O% J5 x) P. a! O) N$ A   set trade-record-current( list (timer) (random money-upper-limit))0 o1 [- l0 i# {2 H

$ ]6 E/ }( l8 C) ^6 }# T# B+ o问题的提示如下:) ^) d. |+ Z9 o9 H

" B4 O* H3 M1 n' V( rerror while turtle 50 running OF in procedure DO-BUSINESS
; h& r9 o* _) C4 i' @  called by procedure GO$ G- |& f4 U' @3 Y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  W" a2 M( j  E% Y: b- P
(halted running of go)3 e- M) ?" ?7 B8 N1 Y2 x2 A
8 k  A% \) p; q4 n
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
: I, P9 @  n) @5 ?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
, G4 @# ^/ X. [6 Hglobals[
  ~. c: k, N8 Wxmax: Z  c! G7 W# }1 O  e5 B2 T' J
ymax1 f2 r* X8 u5 i$ W
global-reputation-list) `! A3 L7 G8 C7 U
9 G  b( v( @  @& N& [  ~
;;
每一个turtle的全局声誉都存在此LIST
9 ?+ h3 Q0 q. M+ Vcredibility-list, v9 c  ?9 \) E" t" c+ `' N
;;
每一个turtle的评价可信度: y- C) v, X7 d9 g1 |
honest-service
- @: B# p7 l7 u- D1 Hunhonest-service
4 F% y9 h* D! Q: B$ ~7 f$ f) eoscillation2 `& U; G  r, m4 Y/ C! k0 F- b
rand-dynamic
$ ~9 K% I3 ?3 x0 v]1 X. h! n; U; Z2 T' [7 K
' @( u0 H( |' i1 U
turtles-own[
; Q6 c; l# W" B- ^. ?- `( K! strade-record-all" F( i5 s7 h$ r& T9 A1 _
;;a list of lists,
trade-record-one组成! B/ u0 x$ m$ a! I
trade-record-one
; |: H  U7 \  N' U, t% F& a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ F# U* O/ r7 F$ Z7 W; U# t

/ h; X: Z' X  B$ L) r3 R, `;;[
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]]
# \( A$ ~$ M. E" r  q6 `9 Btrade-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]" ]' ?! E2 v; U! ?% ?) \* s
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- X4 b6 X/ j; [" y$ `6 t% {' Y
neighbor-total5 i2 e% {( K4 o! |/ C
;;
记录该turtle的邻居节点的数目
; h  G" O0 @: \5 ttrade-time
$ f: ?7 B  |3 k# P7 h;;
当前发生交易的turtle的交易时间: j5 o* P9 G5 a' Q3 j, ?: {
appraise-give
. `! |5 x7 M% i: |4 n5 O; D;;
当前发生交易时给出的评价9 V. n2 [0 H- O
appraise-receive
3 L" K& N+ b: {;;
当前发生交易时收到的评价
6 a# `' z0 R3 i7 Zappraise-time% M# V9 a$ I) s2 y- V7 J, x
;;
当前发生交易时的评价时间6 O4 A1 j6 y+ P' p( F* t6 {" O% e6 d. o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉8 p& y1 _2 A$ Y! [) I) I3 ~
trade-times-total) g: S% U& M5 A
;;
与当前turtle的交易总次数
8 a  \: V( p4 S& }: htrade-money-total
- x" q& g3 {6 }/ C8 F;;
与当前turtle的交易总金额
7 y9 e: G) r, d: R, {/ |local-reputation
8 Y$ R7 @1 S' m8 o, t5 kglobal-reputation
1 [# O5 S% \/ jcredibility# G) S- {! X5 u: x0 i
;;
评价可信度,每次交易后都需要更新
: N) k( d3 l' [1 \& r7 [credibility-all
. ?( F. l# C8 k5 b% t! P2 r) y;;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
+ b7 G! v0 w$ S  ?5 O. e* p3 u0 z7 Y6 d% D3 e0 a
;;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! O- ^7 U$ n% A' x9 K) T9 I% G
credibility-one
3 b: d# X" Q/ k1 \0 H$ O; Z- W;;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% y7 F# L& ^6 X. |% {
global-proportion
; `! x/ l9 C1 n9 wcustomer
0 f: T8 I/ V" Ncustomer-no9 g( k. C& L4 v4 ]
trust-ok
" V' ?. D2 O( ftrade-record-one-len;;trade-record-one的长度: E: f5 }6 Z- H# B
]
3 L4 }' h+ ^9 J0 r6 g
& Z1 ~* _7 D* b" W9 R2 C7 Z;;setup procedure
6 ^- L$ Z3 S( R* D" D3 Y, M
+ }# G9 q* ~5 S: E) P" nto setup
) Z$ E2 V" e9 n/ a
8 t1 ~1 c8 n3 d( Z7 v/ @ca
8 P- H! ~/ k8 K. B0 w9 {, |/ F
* ]9 ?3 P, e+ L1 A/ r' k9 d& |
initialize-settings

( P7 x! S- x* [+ X/ d2 p% w( b4 U  H! R5 i+ X# I% m1 P- |8 V; l- x4 M
crt people [setup-turtles]
" b: t* U( B9 X6 M

& Y  G  a* W) D% ~reset-timer

( y! K+ z( t  z0 b$ k" p7 t1 e4 [$ J2 H
poll-class
7 O) K  z* P- K2 A$ v2 q# J

& e% @8 Z. `( Hsetup-plots
1 u9 R& F3 X$ \
, G2 ~7 w& z/ }8 s- X
do-plots

0 o6 F, B# Z* V* l4 k( Uend
( }( g* E2 P- h1 j, D4 V
: w& Q7 w) k- j8 X: }; P4 _to initialize-settings4 f9 \" r) g6 V8 x  a0 |

8 v  |2 z' X& kset global-reputation-list []
" q) X. o8 F: @8 F% r8 V7 a

/ I  A& e4 t1 yset credibility-list n-values people [0.5]

4 a) x3 K* W/ `# `, C% c/ `. V9 I
set honest-service 0

  `3 x  _# N% d  |! a" H4 k4 q  h/ ]' J& Q
set unhonest-service 0
  \5 H1 c0 q- Y; r* k4 h

& u2 f; c5 ^% o6 gset oscillation 0
& L% g+ y9 g+ N
9 f  P- h7 a& O1 I% L7 w: |
set rand-dynamic 0
* J. I6 g  _3 S2 _8 @
end1 v3 u! Y* s0 F7 j  W: |6 N  k5 G

1 g; {# t4 n" r/ \' f' g$ X. _9 [to setup-turtles 3 Q) y! Y: X- C
set shape "person"7 C/ N, c9 i2 \& P. O  q
setxy random-xcor random-ycor
1 R  \/ \- D9 ^9 T' P0 t% x4 fset trade-record-one []! |& }8 z1 H+ f3 |* C

' {1 l  q' E$ z: L& h" {- lset trade-record-all n-values people [(list (? + 1) 0 0)]
9 q) |" B& T2 @7 G
. D2 ~7 M" N" v% _% P- O$ l" M+ ]4 g
set trade-record-current []
  p+ U" p: O. t; cset credibility-receive []
/ |/ `1 j  G( z  ~! `. ^2 tset local-reputation 0.55 V' T6 t1 ~8 z" h5 V6 D6 D/ s3 Y& g
set neighbor-total 05 F3 t5 `0 Y4 e, f, a* p
set trade-times-total 0
. b6 ?  [  B1 b% i! Bset trade-money-total 0" i; C. e" S* P& L* {, M
set customer nobody  e+ k, T" G2 O5 q
set credibility-all n-values people [creat-credibility]
, M0 K1 v5 e) H% Z( K- W3 Zset credibility n-values people [-1]1 ?2 @7 y. |# [! N% M
get-color
# A% h% u8 k' C8 a: U* l' j

, C+ X! a, h5 q( \+ V3 Jend
1 x$ K  z8 _9 f/ `6 a# G2 g, E: L! C% Z
to-report creat-credibility
! k/ w. F3 J: F: ^1 Y; lreport n-values people [0.5]: K# N0 D. G/ x. [2 I# G
end5 @% r9 K% u# x" V  F
- F, [5 n0 T; y4 D
to setup-plots/ |" q# b, D2 I6 n. K

+ h! V: @" Z" [! {8 N+ h" }set xmax 30
- }4 m2 f0 E$ B! h( ]
/ N+ E; s* y1 |5 j7 N
set ymax 1.0

* y) |7 f) G( _/ {: o( I
1 `& [  ]( i% L7 O6 jclear-all-plots
2 |- t, V3 c/ i; n0 C2 p" U9 ]- N
6 B6 W4 t  ?( A1 g$ z
setup-plot1
& A% [3 T5 I' I  m5 S8 c+ H
: n; G; S3 |% I: I
setup-plot2

6 I& a' e; ]! `) w' y: Y1 k) K4 x2 ^* o  U5 L' A
setup-plot3
$ Y. S! f! D$ _) a* k
end
4 f, c' j) \& j" [
1 B: A( i( g+ Z;;run time procedures
, s  ]; Q) N# `; O1 |6 c6 P$ c
5 C; k) Q; s- {6 _4 m9 pto go
- J; n! r/ A/ `, x& g
3 d8 P1 l, t4 Z/ U3 F$ rask turtles [do-business]
! F$ {: d3 a7 Y" ]
end# F7 t' U, U: @" k( c9 _9 e

9 b% v# e$ @) y' Pto do-business
3 Q/ X/ o: S/ u  R% w; o
( o# a2 p3 z) X7 J

4 V" Y! i  f/ ^: m1 Drt random 360
. A- S6 x# ~9 S; d

4 x4 S, G" U5 _fd 1
) P0 J8 ^% B2 ~3 k. |, [5 H, M

2 a, q  e. s, a9 difelse(other turtles-here != nobody)[

, o2 N2 |6 O+ o6 v% R
* O+ L- u5 l3 W( l6 }set customer one-of other turtles-here
) P1 e! H0 {- K0 q; Y

3 K9 z) P- E9 s: O;; set [customer] of customer myself
1 s6 j. O7 U) \3 P; K6 h0 P7 O
* Q, p* Y1 i8 J
set [trade-record-one] of self item (([who] of customer) - 1)+ R: ]; R( _* z/ H
[trade-record-all]of self
0 @% l& a( K$ x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: Y) M! k$ d" k2 g, {( h7 m% }3 f0 Z: P+ w7 `$ v- j1 ~# U+ ^; l. {
set [trade-record-one] of customer item (([who] of self) - 1)
/ K( A% i; P0 {- H# C: o- ^[trade-record-all]of customer

1 n4 V! E( H/ l/ S2 ?
8 S# e$ \5 {: D) l* ?# t! j/ \set [trade-record-one-len] of self length [trade-record-one] of self

, [8 J9 r; {9 W  E- b% m. w. I5 W1 ]. n) P1 D+ e) l
set trade-record-current( list (timer) (random money-upper-limit))

9 X. I: O3 G- ^: N1 k$ v3 F' f! R; ~
& U9 p0 J7 B) X) P3 kask self [do-trust]: e8 N6 _, {& h7 p3 q2 A
;;
先求ij的信任度9 O. c- x! |- b3 G1 J' O9 F
9 H" m/ ^0 c* o/ c( z7 [6 \% F  H( W
if ([trust-ok] of self)
$ V7 L8 ~; d* T9 I; m;;
根据ij的信任度来决定是否与j进行交易[
3 u  G2 d9 v' {9 T5 @! U1 w; b* Lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" o! H; \# G5 t6 D
. f2 ~4 ?# ?5 B& O
[
7 `7 s+ F1 a/ U) U( {, j1 c
# Q$ ?6 y: y7 D! [. O7 E
do-trade
2 j! _" Q% ^% j
1 W) o. e/ D, I4 _$ u" |
update-credibility-ijl

* {, f" \4 X) U2 x" z- k! G. U3 j- v$ t8 X# @" ?
update-credibility-list! h: R" V: Y6 t3 U0 c
* {7 w* h- l3 |) a8 f* s8 n0 r, ^

  i! s2 W% `9 n6 a+ U+ _update-global-reputation-list
3 y- V! z# t0 g

7 ^; d1 N) g: G$ fpoll-class
" X$ c9 I2 q, X6 G3 _

( I1 `1 @5 y' fget-color

0 m% P; E- f7 {9 z* ~0 a# \0 Q* ^$ Z( m, d; N3 ?
]]$ H  \' M1 F$ d2 @

  ]" K: o" R6 z6 D" @;;
如果所得的信任度满足条件,则进行交易
" C$ ^" W+ \% h' w+ S7 A3 O
1 I, O' d7 Z* P2 z/ ][
: ?2 B/ `/ s, q- _/ D: L
; b% z% [) p7 D8 ^/ p0 F- h4 f
rt random 360

0 D5 L4 N3 {6 @
4 [( b) J9 T3 C4 R+ T9 [fd 1

: i7 k2 F: m. a( y
8 d! v$ w: \0 ]- z' w5 d- o]
2 ^5 [) d9 l$ ^+ S& E
0 A# Q' {( X# E/ w1 q
end
( l3 H# f9 i0 G

9 p& p6 c# K3 e  `; X( Nto do-trust
/ ?: }, |  t% O6 _! M( D) p- Qset trust-ok False- Z2 [! u1 y# x7 B, j
. ]1 i$ m/ D" C8 Q9 s9 M9 F- s7 X

) L/ w: g" h1 l# E, i/ {5 y* a' Dlet max-trade-times 0' N6 v( K  L9 h* Z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" r4 ?( w: @$ S3 W& K; ^! H# Zlet max-trade-money 0! s3 s( X  D& a! S8 k8 M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 ^. Q; K8 ]" i) w. y* l. t5 Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 I# F# ^) D# J. p- X' c# p
" V$ `; s' u1 Q% {0 @
4 q% {$ v& B5 N7 m. e. S6 i( h9 q
get-global-proportion
& Y! |0 l  v8 V+ Wlet trust-value' e7 H4 G0 V' x7 ~1 N4 R! c
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)
1 e6 l9 o- A$ T9 G0 M
if(trust-value > trade-trust-value)
6 k  L! [9 A6 T  b: u! ][set trust-ok true]* t" g6 j; X7 h4 B: ?0 J& L: A
end
. t6 U0 {7 ~( K$ L
, k" l5 Z, Z* T, Q! J  sto get-global-proportion
- e) D% ~6 J6 c+ rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; B6 M8 }2 c- C[set global-proportion 0]
& p7 {2 F" k" `4 H[let i 0
1 N" y  |9 l  ?3 ylet sum-money 0
# P5 U+ U3 E$ N4 J6 W3 Z7 Z  Jwhile[ i < people], m& t- S' n; _2 b& {
[/ m$ C( q8 j% r& N6 ]3 ]* @
if( length (item i
* _4 V6 Z) Z! n9 R[trade-record-all] of customer) > 3 )
. i- R1 p+ J: \6 T; @
[) d" g7 k' t( U" f8 ~/ d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, ^' S# h0 m$ v5 f& p. O4 ^9 c]
+ J- c7 `( l. T3 S& g: W; c. r]5 h$ [3 o  T$ z5 Y& d
let j 0
5 Z- j5 J8 {& C0 i+ j8 T" Rlet note 07 l2 U) [1 l  s8 W! u- \
while[ j < people]$ m4 S* h; e6 Z* b* W
[  _# ?4 u! |6 k) _; X. i" P; }
if( length (item i! k# q8 j& q- [! v, I! q
[trade-record-all] of customer) > 3 )
+ V9 k0 B$ B6 B) ^& }; W
[
% x  y4 q, X. H* k) b; P- Aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 s! I2 G+ G! f  K2 {4 _
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- @& g6 U. F( K
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# a. O3 [3 n/ v]3 a- |' M3 m! H. L0 g
]
8 N; ^' u7 w: A6 yset global-proportion note; C% d. y8 C" J9 S) z
]
" I  U% P, L' a/ Tend
# S5 k8 V2 B' H3 `3 R) o4 y. g6 c
to do-trade
0 Y8 z! N$ r' f;;
这个过程实际上是给双方作出评价的过程
3 |0 i4 Z0 o9 z& |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& l& \+ ]2 R* b2 w4 P7 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ q( f/ g  m7 f* N! \set trade-record-current lput(timer) trade-record-current
* _! K/ }- @8 x: c" ~4 I;;
评价时间
6 _- i. r! J0 \$ v% K, pask myself [
4 s2 ?5 Z- R& L) Hupdate-local-reputation9 y- X8 @# G# t* V; b9 S* a! s
set trade-record-current lput([local-reputation] of myself) trade-record-current
' y. s5 ]3 R8 v7 W: f! V]; N6 o# D6 b4 `1 `  l2 f+ h/ P& j
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 H2 E/ y; T. {;;
将此次交易的记录加入到trade-record-one
+ o% v# E' m4 Y7 [set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 B: R% P* ^% b- L2 ]( f+ s" r
let note (item 2 trade-record-current )
: o4 }# V$ _( p: _7 T# U, A3 qset trade-record-current. [$ p; ~' u; |$ V' y8 A/ L6 [
(replace-item 2 trade-record-current (item 3 trade-record-current))

/ x" x' B: s- e; r  z; Yset trade-record-current
( ^+ J* B0 B/ F(replace-item 3 trade-record-current note)
5 Z' ~9 Q& g5 e+ ], R0 x; g% t8 h/ |

8 [& O6 ~2 D. z8 T, Gask customer [& y; Q9 U- T* F! h
update-local-reputation
2 ~8 y6 K5 U0 |0 D5 Dset trade-record-current
3 J% J: Z5 k$ y+ G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 G. E1 U2 W2 K1 ~' S) P; s]4 G  j" r+ M/ A6 X0 m+ c
2 L. ]. o$ B( f

  p3 M( K: W$ b: U) O! C' h- \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 k5 A  Q0 k% Z' d  r
! a& P2 ^; z, O6 m" ^3 m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 t5 `1 C+ s' ]9 _3 `
;;
将此次交易的记录加入到customertrade-record-all
  |( E% ]) L' X! w& send
" X& H. q+ q. _  j& m, M: @8 y
* ^6 m: r6 w- f. }, L' z3 Cto update-local-reputation/ k, w9 ^/ x, t6 \) m0 Q
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 d1 D1 [9 m3 d
# [# }( Y# v" ^9 q2 r2 L2 R& H  L7 k
/ S/ b6 g6 i4 G' s. {* l% y;;if [trade-record-one-len] of myself > 3

0 L( [8 c- ~" U1 \" b& R+ Oupdate-neighbor-total1 B0 W! a2 x& w! @" X2 l
;;
更新邻居节点的数目,在此进行. k" ~* s# k: z: [
let i 3& i: [: H3 t; w9 ^0 X
let sum-time 0- n! M5 k3 f; A
while[i < [trade-record-one-len] of myself]
+ N- z( v) c- V! ~! P[
+ C( A" U* Y; v. C* I) A$ Mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- q1 c6 q7 ]3 q& Oset i  w6 ^# ?  F" T$ E/ h
( i + 1)

2 k% }& H! y' K1 W4 Q]
, Y8 m! Q* F2 i$ wlet j 3
2 q; R) N5 g/ v; R, elet sum-money 05 v; O5 K0 ^4 b9 c+ @
while[j < [trade-record-one-len] of myself]( ^% r0 F- F3 B% U$ T, A1 F. c
[7 E. @( n/ i( C$ p  P0 S+ 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)
1 B# [  d$ s1 H& o, Fset j. K! i( `: X- {! ^& h
( j + 1)
; b! ~  f8 n3 S7 l5 X3 V% W
]
: Z* q1 e% r8 x9 |7 Jlet k 3
# M7 z  Q$ g/ L! J. A7 p, Xlet power 0
0 I$ u7 |& x) {4 T" C  ?$ O0 ^let local 0
$ h0 n9 R7 O% P; T- n8 }+ v+ Kwhile [k <[trade-record-one-len] of myself]
0 W& P0 a  q1 q5 W9 s[
2 U6 M5 c4 O; A* F# P8 z5 |- Xset 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)
, o' M" X: c: `set k (k + 1)
! ~$ S# ?# s/ \- i]( R5 Q1 J# s- r, I2 N; ?$ V
set [local-reputation] of myself (local)
# q3 w1 [" v* m5 g' U. }( yend
$ J( ?6 O2 T: W1 F* ]
# a- V+ j3 n+ ?" e- wto update-neighbor-total
0 F8 @$ y- g% `! x; d8 C( B
! _1 T) C4 R( r7 \) Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( D2 G9 v* u: ?7 m

& P* D2 i$ f8 T  W+ Z9 [. V
4 z, w; Z6 h# L* h( u9 `% q
end
  E8 I) r3 d! n3 C
7 v0 A6 s' C% ?& bto update-credibility-ijl
) X+ ]& U7 y- [; F# u3 J# K$ K& A8 N
;;
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。' j, G* U( X$ g- {9 f
let l 0
% f: O7 h* P1 A# j7 A: z! Y, Ywhile[ l < people ]1 A3 O( ]5 [( _! `% \$ f* q
;;
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 R; F% U1 t) u: ~; _, ~[
7 M. E/ e! g+ dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 V% ^* B! h/ h- v* _
if (trade-record-one-j-l-len > 3)
) E+ d4 `5 n$ Y1 z5 s[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 b1 F. {( g+ [let i 3
4 ^0 B' a" R. E3 C5 G$ b1 u% dlet sum-time 0& U/ y- F# l9 d. u5 s) a, m
while[i < trade-record-one-len]( S6 U, v* K' V" q  P
[" J3 H% [3 L5 W) v8 m
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' V& k7 @- K8 zset i& u4 f& |" L- a6 K, K5 g1 S
( i + 1)
: X2 S7 J! l5 P  |# W9 X) L
]# K' k1 i+ I! _6 L- ^3 @9 X
let credibility-i-j-l 0
6 E( f0 L) Z" @4 y) s; }" p;;i
评价(jjl的评价)8 r6 K% `( _3 x$ j5 d
let j 3
$ {, C6 C/ S6 l; `3 Alet k 4
$ l% B+ b4 m2 \while[j < trade-record-one-len]) t# b0 z, W8 H. T! @/ g- K" q
[
9 F5 @2 l0 I% _$ _% M7 o4 S, [: b* L8 Owhile [((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+ y9 s5 z- }7 s0 L5 T1 ], 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)
% E0 O( D4 c$ K4 c2 \2 G) ^  z5 vset j, [. k6 s  O( ~
( j + 1)
- U6 n! N8 k- P# c1 s
]
% K8 b. d) l3 o6 o, K7 {3 l) _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 ))
2 v5 D$ x3 l  |6 S" J! C: ]$ \( m4 C8 q7 ~+ H

5 I; F; W# r2 B  d0 u( Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 P$ Q$ U" C6 z3 j3 N8 N& H! W
;;
及时更新il的评价质量的评价
7 c( N% {6 V+ K$ }- Y9 V# ]  O9 z& Jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% M) v( W% v  Y
set l (l + 1)
4 j6 H, n4 o$ m! K; |) i  L3 C]3 r' u9 M, z' T, B8 T: b) {, X
end* r! r8 \* }3 I9 L% f- ]2 K
* s! y( D  L6 `
to update-credibility-list
& J! x& R% E" M/ \! Llet i 0
3 m/ H, Y. j8 E1 l: M; Wwhile[i < people]/ E: i* B6 g" G. e' f
[
  x* ^( ^$ n6 e8 b  O8 q7 S# ylet j 0
5 _  D1 O& Y$ j; B* p1 rlet note 0
" E4 J! V2 X7 I% A$ _' flet k 0- r; Y. b. z* M! ]1 ~' T9 ^7 E
;;
计作出过评价的邻居节点的数目! s* W+ q, _3 ]1 L0 G
while[j < people]/ S7 P9 j) c0 g- W
[
5 W/ e  t+ e! \: V8 W# pif (item j( [credibility] of turtle (i + 1)) != -1)
' i: S# M) y5 \8 b) w0 `;;
判断是否给本turtle的评价质量做出过评价的节点
" s  f  L1 d. B! u[set note (note + item j ([credibility]of turtle (i + 1)))4 a& S/ C" e! P* I4 O
;;*(exp (-(people - 2)))/(people - 2))]

# C$ b! t8 h5 o1 J4 X3 b' [2 ]set k (k + 1)2 _# t: L! F8 e
]% q% R, ]3 |2 J* q
set j (j + 1)
6 A  \5 Y' y7 L! y: v$ G]
$ C' t: B+ h' E6 Y$ z6 z( Aset note (note *(exp (- (1 / k)))/ k). R, U( m% p; `: r/ q' f6 {- F: V
set credibility-list (replace-item i credibility-list note)
- A( Z7 t0 s6 L( E/ W, jset i (i + 1)
( p' m# ?! [$ f& s3 H+ l+ E. H, `]
! z1 E& P: Q2 k2 cend
- `3 |; q  w+ c% O) G- L1 X( n$ b) z) G5 x0 x/ T( ^. n' z
to update-global-reputation-list# W5 [0 S2 T# ~2 Y$ u9 \% s1 q
let j 06 w4 w0 w/ j5 O
while[j < people]. D, Z! E  R  D& c+ i5 A; `( ]
[  N" h  P! m) g4 z9 \4 ^" U
let new 01 g8 b0 s) m6 b& T* }- N: P
;;
暂存新的一个全局声誉. f% H2 j8 S$ g
let i 0
' A: `5 H4 w& V. }let sum-money 0. Z$ e) a' z8 x1 ]
let credibility-money 01 i4 A  O& F- g: ?$ J3 b) F
while [i < people]
% i: o1 i" B+ v[$ L  x$ Q2 R- `( t4 e9 J7 [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 j) S. Y1 n* |. n# k' t6 V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: J! a, o+ _& c9 S# Y& U) c" H" fset i (i + 1)
' X: W6 u4 H3 R% u% m]
* }* m7 W8 Z4 b% B3 k1 flet k 0
& W* h$ E6 O6 C2 U' C5 Mlet new1 0" R; s" T5 X# i( A& {& v6 T
while [k < people]
8 `& v" U: C, M% w& G/ S0 |1 V9 Y[. a# i, g3 l6 u( L
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)8 l% @& z, v9 n+ n9 w4 x
set k (k + 1)
4 e$ h- z/ @4 h]
7 q# o* n! `$ V! @1 t, F3 u' l( Eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + b/ H6 q0 T' P+ X
set global-reputation-list (replace-item j global-reputation-list new)
% E( M( |- j0 c5 U/ P/ z0 ^6 J2 lset j (j + 1)
) b) \' O! A! @* y]
5 Z& k. n. X" w) \+ O/ Rend% Q& E5 B6 ]: J- o& b; S
, c+ z5 F; D8 N: `$ b  \4 C
7 F. V- h/ s" g" A; x/ f, q

( h/ |3 X9 u7 I4 V- ?- I/ rto get-color) J8 N( w, Y4 F. [% ^. A

# ?4 m% b) h, Yset color blue
8 i" o1 k' ]) `6 p8 ^
end
% X8 f! U0 N: W3 a" h- J8 U$ Z: `3 j" d' J
to poll-class
" }+ K: f6 R9 Wend( J. {$ f! C, ^0 N: M( Y( m# [7 A

( X: R, z. @( ]9 S0 X, F, w# Tto setup-plot1( G; R5 R  N+ f3 U* p

3 T" [2 a" A/ X" l4 D  y& Wset-current-plot "Trends-of-Local-reputation"
" p, i* Y" B" w3 v

) T8 {8 z* x9 s3 w; f2 e1 }9 y7 fset-plot-x-range 0 xmax
; H; l& e! v# m! r

: h) g7 M& m# A# h7 w1 Q& bset-plot-y-range 0.0 ymax
% A& R7 s7 H+ |( E* D; T6 _
end: D7 ?& P- K$ Y
6 v/ |& ~$ u# x( D: G
to setup-plot2- x* |$ [1 p& u, I9 M4 [: @

0 t9 ~7 f9 k* e) uset-current-plot "Trends-of-global-reputation"

" X! @# u- H7 l2 J8 z* q* C! S
8 [1 V/ F2 j2 H6 x5 i' }set-plot-x-range 0 xmax

$ d& f0 H+ X1 `, ]$ `  q2 ^( f
  e3 B9 s/ Q5 m) l8 d; u2 F* f: Uset-plot-y-range 0.0 ymax
/ i3 m4 Z8 u6 f- g+ g& q; ]
end& q2 j* Y6 u" N" a* t  x' F
# l0 T/ j5 F) r5 d+ }
to setup-plot31 D) a( b- |. R; Q- K! P+ _

4 [9 h' n7 b1 K9 s. U! Gset-current-plot "Trends-of-credibility"

- ~3 ]8 [  I! C! h8 s  e( a: ~! q- E5 W( F; M8 p
set-plot-x-range 0 xmax
4 y- Z8 n) ]" [2 N) r
* r) ]) G5 S- y! M4 B
set-plot-y-range 0.0 ymax
: n3 {* ]: m: Z# g7 n1 Z8 `: D
end9 Z' c, T3 j0 t& y8 h& f1 O

: L1 R  G$ a: z* B/ L7 ]. Dto do-plots0 G  K( V( c: l( F! m+ M" D/ Y5 H
set-current-plot "Trends-of-Local-reputation"6 A! V# V# Y: X6 N
set-current-plot-pen "Honest service", [( Y. z! ]& O
end
8 P9 V* \1 [. g5 q+ p2 C3 P) m$ Z0 @0 _" b: \" t8 g9 }$ e* _0 T
[ 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 ?5 l9 s  N9 P
1 F4 ]1 g" U, `: l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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