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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 M% Y) J; d0 K1 R, m) g
to do-business 8 \% @! U: ?5 h( v5 ~
rt random 360
* Y% s4 d5 d# F fd 1
, x3 O1 z6 r3 h* v: p1 L ifelse(other turtles-here != nobody)[) U  T+ L$ l" G- O
   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.+ b, Q1 J% y4 g' e- V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 P  O% b' c: A: t! @9 R) p
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ g7 E) a+ P3 y' ?1 G( i   set [trade-record-one-len] of self length [trade-record-one] of self
9 j# q4 s; w3 H* y   set trade-record-current( list (timer) (random money-upper-limit))
" q, r7 \# R# x; V  b6 B; e
! J3 V3 L* m. P/ z; y* m9 c问题的提示如下:
% _0 ~! A) \' Z6 G0 q
, I5 ?3 g' m, S' h$ _error while turtle 50 running OF in procedure DO-BUSINESS3 N5 h) g$ [( `" T
  called by procedure GO
0 N; |" I: N0 ^9 X9 @; FOF expected input to be a turtle agentset or turtle but got NOBODY instead.
" f8 _9 u6 t$ m1 i5 l2 A
(halted running of go)
5 f/ g9 Z0 }4 u6 U# [. o) x2 @
1 o1 S+ J; {1 x$ K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~~. [* O/ [! ^3 d6 i. g8 b
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
6 g, k: d9 U3 e6 bglobals[8 |0 v1 @1 D2 H0 x8 h
xmax" Z9 J; \# E( w6 s! s% d4 \! z
ymax2 Q$ ]. f% \& A7 @# b/ {
global-reputation-list$ J6 a% M9 F+ Y
3 o& N  j* R& D/ I9 e
;;
每一个turtle的全局声誉都存在此LIST
  G- m2 i1 b+ H. B* b' k2 @credibility-list& Z% K" x: Y6 d5 A9 K" {
;;
每一个turtle的评价可信度
4 X9 D: }, D3 k: X6 _3 T" Zhonest-service, O& `$ @$ p8 t; c- c; z$ M! V- O
unhonest-service- k& B$ c; }; _  d' N
oscillation' I2 z( d2 n7 L* n/ v  ?8 j# I' C
rand-dynamic
3 Y- T- e9 r2 s]7 x, q- h; {3 x& c7 \) D; m
* K$ Y+ @7 H" K! K- t
turtles-own[5 E$ C8 m4 O4 s: G
trade-record-all
$ I5 u0 g! g6 F; j8 u. q;;a list of lists,
trade-record-one组成2 Y, V: Y# c6 ]" S
trade-record-one: q$ |. N, T, z1 a, f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) Y& M+ n8 M- {1 e. d3 k0 K
- L- S6 L( {! Y" I8 ]: d9 O
;;[
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]]7 X% w% Q, p/ W8 p! S% V
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]# C" A$ m; u! H
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
* x5 z( P, j5 y$ ~' X0 n0 f" Aneighbor-total
' g# f: x# m4 q3 v+ u) C;;
记录该turtle的邻居节点的数目' @- d3 }, K  R  `2 M/ ~2 u, K5 ^
trade-time
" H- ]( M: Y7 L/ b, X0 Y;;
当前发生交易的turtle的交易时间( H" t$ d+ L5 q- i( |9 v: z
appraise-give
4 E) {( F1 Q' D% O0 R3 R;;
当前发生交易时给出的评价: v; h! y9 v! i+ m( X. ^. {1 A
appraise-receive  O5 J; w0 @( d7 l! j- |8 l% N0 g- f
;;
当前发生交易时收到的评价
% j/ G" B5 X0 Z& W9 L+ _6 h& cappraise-time
( q0 l8 z3 u9 C  n: C" H;;
当前发生交易时的评价时间. C# Z: l, f4 ~3 ?- O8 L. D
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. Z- d# A% p% u3 c
trade-times-total
' T+ e8 P9 @; F% V7 u;;
与当前turtle的交易总次数+ u9 S0 x* u( e5 S: ?
trade-money-total$ P5 Z8 C/ F  K( p( [
;;
与当前turtle的交易总金额
: i* R# T0 _% M% ~5 {local-reputation* D$ f' I0 o8 [, ]: r+ t- a
global-reputation6 A( k! y' t* X  q9 A( s
credibility
/ v* b+ {, _4 N+ t! Q6 k, _;;
评价可信度,每次交易后都需要更新: C! F2 g' E6 {, \- p- f- F9 h. `8 H; H
credibility-all: O5 c- [! i% V1 F; g( M2 ^; [" o# X
;;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
* _# B- ~$ }- ?7 z& w3 n( n& z! w! D( d$ s" d$ ~6 b- v4 V
;;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) J& Q3 @9 o# P7 Q
credibility-one
5 {' O5 K% I. a+ F$ n( L- Q;;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people1 \4 v; ?& B; d% D
global-proportion
9 ^) s( \& j. u# Y3 I: O& N5 T4 ocustomer
4 P) m3 W( P2 L+ d% z/ K& jcustomer-no* p% X3 ?1 f5 J* C. ?
trust-ok
" l2 F. i. a9 T0 ~% Atrade-record-one-len;;trade-record-one的长度
6 m! X# Q8 u# N- q2 d/ A" s]
7 s1 T: K* v- Q! l: O% I. @
! C" s. x9 {$ Y0 r5 Q; m;;setup procedure7 s( }* \, a4 P

* V6 ^5 F' A8 D! a4 xto setup' s8 x8 H/ M/ D5 \4 J; p

' J/ X4 @& z5 b: O' [ca
. h3 i, g$ v$ Z6 c8 X! i  d" m
& P6 K/ e1 J  w7 s7 B
initialize-settings
6 _, D0 s  L' ?) y) u" c

( |; B! p  Y8 j& |$ r/ D+ bcrt people [setup-turtles]

4 |7 }1 a  s) K# h/ D/ M5 R
3 }4 l& @: A( Q3 u7 G' [6 n" z3 Wreset-timer

  k+ W$ H% c% Y1 u' S  M
6 ^; _: Z, i2 Q5 t! b9 Lpoll-class

! x' X4 K8 Y( G
9 c. q$ A/ q+ g: ^& u- ]0 R- Bsetup-plots

. C; g1 ?# _7 J
' r' Y8 y* Q7 v5 c# `do-plots

( M1 z. }1 U3 u, `, C- S& v4 Vend
6 k* j& U- t. J8 q, n1 a, {& }
to initialize-settings# k1 v9 r( N* E- f6 J6 [
+ u8 c4 D( t1 ]4 S$ A4 C" G
set global-reputation-list []

; t  Q0 H- A& H1 T* p- ]# f' e5 K$ D4 F: c. I
set credibility-list n-values people [0.5]
+ Y; \; t+ Q2 V3 U! t7 X& c
1 S& ^2 [/ j  e% O8 e0 ?0 X! ]$ j
set honest-service 0
% q' X3 U& K5 H' R. x) T
  A9 ?/ _$ z$ j/ A/ ?9 {
set unhonest-service 0

3 P- ]1 w; L" z. ?% M2 p  A9 b8 h4 k4 Y' w
set oscillation 0

& t7 y; Z( W! F% c) M4 r$ j) a9 P
set rand-dynamic 0

/ l8 w3 f3 S* R' X/ N- oend3 E- y. l1 h2 ?. _7 x! H/ U+ d
$ s) D5 ?- O3 U; f( B" p: R
to setup-turtles
- q* ^, f+ D; d& f1 Xset shape "person"
# N3 Q5 F2 t6 R( O8 nsetxy random-xcor random-ycor& u8 E) _) b5 \; g0 b
set trade-record-one []. B* v* ]8 h3 a& O, w% F
6 U! R% I7 t3 s& I( `0 t8 d
set trade-record-all n-values people [(list (? + 1) 0 0)]
& i1 Q3 [0 x: G( N! A
" H- S' P" P" q; G# P( s
set trade-record-current []
9 o* \3 t& }. W, U; i) eset credibility-receive []3 F! x- m3 Q: @0 u2 O
set local-reputation 0.5; b8 c) n8 Z, w) R$ o  C) O
set neighbor-total 0
# e; {0 Q6 O* s! j1 f; `+ o1 K$ a7 zset trade-times-total 0
6 Y( U( @- \- Jset trade-money-total 0
( U4 [. j' l/ U+ z+ [set customer nobody
. a' Z. F$ ?7 x* \0 Iset credibility-all n-values people [creat-credibility]; o; K9 ]9 _, v* H; y. P
set credibility n-values people [-1]
7 {& V% q  l" N) Zget-color) M8 R  D9 x: T& k9 G" s8 a) Q, a; x0 O
. A6 e2 g% @  l0 V1 s4 s# u
end
3 r2 d0 a3 d) t" r* H, ]' z! g* B7 t9 ?" U0 R6 T
to-report creat-credibility2 t$ N. q/ m7 H$ l: ^1 a
report n-values people [0.5]
  N6 t& R1 ?" E9 y+ F$ iend
9 V! q: E, v% t# {. w5 @
2 f" M. L3 x5 e# p9 `% `& y9 Pto setup-plots
; Y( G0 T2 r8 a9 V, B; l; z5 J; C2 Z5 H0 r  G- d2 |( j
set xmax 30
# _  ?" ?: ~7 h- b, i2 h& T
, t; M' K' p2 T
set ymax 1.0

1 E) D8 S! O7 o. y' J' j8 \
# k" v+ O+ l3 l9 a8 r7 n4 `% ?clear-all-plots
" r) r1 J  C5 C* h
% h" m0 g9 S* a! E
setup-plot1
, B; o+ G- v: V
; r  X" @2 q: }3 l/ B0 b
setup-plot2
* y' q. Y! S9 g* E5 `6 g

& p& Z% O  ?. x  @8 d1 wsetup-plot3

0 ^5 v. Z' E1 U2 ~. m8 o: Aend
; H5 [  N! u. W, ~  L$ @' |0 H
5 [7 V5 h: i+ o9 h/ m+ b( M;;run time procedures9 r7 W4 S; H2 m- D% X  M/ W  M9 D

* Z" K/ s2 y/ ]. D  n) Lto go
) o) _4 h3 t$ m$ F3 ?& v7 E$ V6 x, K0 {( [" N9 }, ~7 x
ask turtles [do-business]
6 ]' s1 {! J0 n2 p9 D6 x! Y) W
end
1 o6 r6 G0 S. s" l, j9 F3 J! Y) @- V$ F7 {9 y9 \0 w# T6 a
to do-business
6 P( Y4 B1 ]- i( Z
3 B$ i3 h$ S9 l# c  h  u# T
, T" l5 J6 l+ |+ `. _. d0 C
rt random 360

: z- D, t( g& w) ]1 R6 k0 n
) L( P8 L7 [; r5 ?7 n: u8 Z1 N/ Wfd 1

. V5 D: V5 R! S) E2 k3 }% D" G, L: \0 r6 ~
ifelse(other turtles-here != nobody)[

1 i/ [- b" j% V1 q0 f
: ]$ t& R, q7 A6 Q, ]7 pset customer one-of other turtles-here

8 P& c2 S- c4 v
/ s7 @+ f1 B5 D. `% s3 `$ Z;; set [customer] of customer myself

6 @3 Z  j# ?2 J  V( U" v
, g, U# r2 Y* q* Aset [trade-record-one] of self item (([who] of customer) - 1)2 ?# h( O1 U( B% _% [
[trade-record-all]of self
6 x* O: G! ^  s* y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ S2 o( A9 \& \& }: ]7 n" [

0 f' @* q1 ~  \; s7 v7 O9 s: aset [trade-record-one] of customer item (([who] of self) - 1)
1 F) x# [; E$ s4 [1 v[trade-record-all]of customer

; V  j: Q, |1 e& r+ A  ^2 x2 a: F. o5 E
set [trade-record-one-len] of self length [trade-record-one] of self

! f- B. l6 h4 @" E9 J0 L2 o
% u. U( i# _1 uset trade-record-current( list (timer) (random money-upper-limit))

' d# T/ w( i8 f" X4 d# f- X+ n% P& q4 C& E4 g; X) ?% p
ask self [do-trust]
& x# g' I- R6 f;;
先求ij的信任度* w$ l" G6 n4 c. t# f" R

* |" g8 C" A$ s9 `/ t$ _if ([trust-ok] of self)' W" T. X: \6 N6 X0 A  X' [
;;
根据ij的信任度来决定是否与j进行交易[
& U2 _9 A; N3 {; k- ^+ bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. Z! M, Z* n. b. n: [3 X& _, t/ ]. r& ?% z
[
7 @+ Z5 @% |( N9 u: q% P+ v) B
' D8 H- S2 P3 m8 r2 o
do-trade
9 Q1 {/ s% ?  l0 _& I
& ]) l" F7 L! z- o# E) I
update-credibility-ijl
; \* l$ }& Q$ p# z3 @& C6 s

6 {9 |/ I5 m/ eupdate-credibility-list
0 H! C5 P6 k- B" P

& |5 [9 a& ^. Y2 J/ p( h) Q1 l2 K6 Y* Y' e1 d2 `: t8 V
update-global-reputation-list

- g) d1 v3 x; D2 ^% p
! b6 s* w9 e! U2 gpoll-class
* u8 f2 X" I' z' {
" j9 ~; x2 ^; k  H5 _( n
get-color

- W. ^; D' v5 b# O+ U1 h$ }% r4 W& G' d; T* T& Y% `
]]
, i- y3 |1 a7 A% g! A
: Q' a, ~- Z* b) ]( D  C& Q+ W;;
如果所得的信任度满足条件,则进行交易
$ t2 v9 k/ r! i7 c6 X. v, [* W! L/ C: B! l) E
[
- s$ i" N" I: t

0 k' j8 }( w: h1 M8 brt random 360
. C. W, K) g4 ^& R6 t/ j

# r9 w7 M) s( d# D( d5 Kfd 1

4 x% J& ?; h3 R/ y( [+ w
) s7 ], n6 }$ h" b]
- ?; d1 j, I' \( l

0 }$ [+ b8 a, g2 }5 t( X! Dend
; n- s4 T0 O. P0 u  r) z+ ~
! v4 U* ], I  E& P- z  B+ H
to do-trust
& [, T: Q3 ~! ~4 Y, U2 jset trust-ok False$ q! _1 ]. s5 d3 _6 C+ _
; t# m8 L3 Q' F: g2 F
$ m' R* {1 B0 e' _
let max-trade-times 0+ Q2 @1 d1 d6 q) g# [. V$ S
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; s$ k9 F7 d, I
let max-trade-money 0
4 v3 k. r; o4 S: Cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; {0 D+ H% O+ k7 Q) f+ V
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- j2 A" R7 Y1 x  G! y+ G7 P) S2 ?9 c+ d  b5 Z

9 v' c" S0 _" Eget-global-proportion
* F: O. E& R  x& A4 l; t( \& olet trust-value9 ~9 S8 @# _* c' N+ b9 l
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)

( p6 J7 z. ~# f! |if(trust-value > trade-trust-value)
4 Y" ~% X/ `; k. F( `2 c8 k% R[set trust-ok true]7 w& \. @' ^* \0 P8 T! U7 \
end3 ~- S3 l! W, P  X, ?2 p) S8 ?- ?
3 S  \/ C) F! y/ A! p% D" z. ?
to get-global-proportion, T7 [  x$ m- d4 C2 x% B- l
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 O) p7 e/ R. L5 D- Q
[set global-proportion 0]
$ D, [) U) O2 E3 _- z) O- x3 W4 i/ p[let i 0) I+ D  n" r2 A5 }& {; f0 {  M! ^3 Y
let sum-money 0
# K' N# I" P  Rwhile[ i < people]
/ x) }/ ^. I! T" V, W. c  d[7 r4 C2 H+ L/ K' q" _4 `
if( length (item i1 B, H. k# Z* A2 P/ u" m" i6 p! |
[trade-record-all] of customer) > 3 )

% n9 w9 X- z* L$ O' M8 c5 K[" t' S# C) m, t3 \. m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ V8 Z3 M8 w, X  O
]
9 H6 ^1 U7 q% j% M- l! d7 k4 t]
  m  B, b: h# J+ m/ p$ H( plet j 0! \5 q' |' F. X) x# n3 t5 x) C
let note 05 N# o6 I/ C3 r% P2 O
while[ j < people]# W0 Y* |8 a1 b
[. Q% w/ Y1 x4 c" U1 F( t1 S4 w
if( length (item i
' {& Z7 |0 O& f6 S, N( F[trade-record-all] of customer) > 3 )
& T* n$ e# K( `3 v* a3 ~
[! O9 C% Q* S/ @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# A: L0 i6 u5 c1 ]5 ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ ^+ d* R: D: W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ m# D$ w  K; I, v4 k- l& y) T/ l]9 j& R( T& D* ]" {2 {% G. k' Y" I
]
# `0 B# K$ H8 Yset global-proportion note' C  F2 b; o) v2 P
]
% Y" g, T" u: J; J8 P; n, Pend( G! v# V# F. M! L, [
4 U1 _: A/ k. J$ u* s5 `
to do-trade: i. t" q2 J: M/ d' k6 R% s
;;
这个过程实际上是给双方作出评价的过程
- M5 A! S# `" z$ P3 Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  j# s7 G$ t1 w- y! g" w5 y& fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" d  `% b$ p* I% I( K# P
set trade-record-current lput(timer) trade-record-current
: a4 f8 k( Y: ^5 P;;
评价时间
7 m: t; s& I$ t9 }2 ?  cask myself [
7 P6 e, t5 H$ X, \4 Oupdate-local-reputation
5 H+ m" m6 Q$ `! b9 Oset trade-record-current lput([local-reputation] of myself) trade-record-current
* Q* j6 t3 U7 D* F- W, c]
# T' w$ Z4 S4 v3 V. d# t7 Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; R$ E$ h2 o% K- d& b$ `" a2 g  h;;
将此次交易的记录加入到trade-record-one0 ^/ l/ b4 b9 L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 e: L3 U4 n6 j3 o" A# Xlet note (item 2 trade-record-current )# d& o3 F, N3 u
set trade-record-current
( `( k& _# K; j% ^# D(replace-item 2 trade-record-current (item 3 trade-record-current))
+ Z/ e' h7 o) ?2 N3 ^1 ]. H
set trade-record-current$ F% v: I: o# x) K+ m! U, J0 M( m/ j
(replace-item 3 trade-record-current note)
+ Q2 E, {4 }! b9 s& n* }, z. V" a7 I/ G. u3 o) b

0 x1 o( Q! f( P/ W6 z3 U5 e: s0 dask customer [7 Z9 o  e+ x+ p3 L9 v0 s  G; m1 o
update-local-reputation3 V% o* N2 C) d
set trade-record-current- f- M* N; w& j4 {2 Y" c$ ]8 `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) a4 g, s4 x: }- s4 ~3 w9 t
]
& s0 t$ x0 x0 n  h% B7 }2 ^
0 d* c9 Y  G2 N) f

( f: B% Q9 F8 H% @! w4 R  tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) y& }- Z( K5 p2 ]* _# a- |1 q

6 u! ]* d6 _% B8 O  `set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# E, B% K- w. |( o;;
将此次交易的记录加入到customertrade-record-all
  k4 |+ W, P3 P2 Vend
$ R1 p/ y' x6 J% v; Z8 B  s% C$ h$ k# z- [% L
to update-local-reputation
# h' b. ?" R3 Z& Y: [) oset [trade-record-one-len] of myself length [trade-record-one] of myself
% P  M, p1 Z  A; m; H2 O. G3 p
, `+ j' f+ ^1 |4 o) |* D9 Z" h+ }
;;if [trade-record-one-len] of myself > 3
: }1 ]3 P6 Q6 [9 h% |. p. l8 X6 J# z3 Z
update-neighbor-total
# @+ \! J7 b/ O, V  }% v# s;;
更新邻居节点的数目,在此进行7 ?* C) S" P$ }+ s
let i 33 F" a) d1 M& t  O4 H  H; h  G
let sum-time 0( P$ I/ G0 S6 M8 x
while[i < [trade-record-one-len] of myself]4 k( ?2 E) D9 M9 L! M9 J
[
  A$ H3 S5 g9 P( rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 d! C& ~( _9 M4 [' U! i$ @
set i
& b& t  ?9 g& X, H" o( i + 1)

* }6 z) A" R. O5 n7 ^5 b]
- A+ U' o! j! Q5 ylet j 3. C+ o6 m+ Y' H( _6 A& h
let sum-money 0
2 u  z3 m. \- ?2 ^while[j < [trade-record-one-len] of myself]
0 v# G- y6 ^5 s/ X# x# d[2 K; G$ T4 G3 ^1 G; h
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
" a8 ?1 \) T1 a! A3 O! @, ~set j
9 ?! C8 I) {3 @( j + 1)
' q9 \0 b8 s' I; J
]
  _1 K9 a$ w3 r- O/ Clet k 30 B( V* O! W% ^4 l0 F
let power 0
1 Q% }3 z% E# ~5 zlet local 0
, x& Y, a7 u, A3 x! Hwhile [k <[trade-record-one-len] of myself]9 [2 E7 m# X! X  N
[
: L; i' F* e0 @2 v- kset 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)
3 w# t* Y( _  tset k (k + 1)" P& H/ c$ I& x3 j" k7 y
]1 C8 F. }6 {& e7 E6 P
set [local-reputation] of myself (local)8 M: ?# ~! K5 z
end
: t, a+ i  P! d0 N* z7 N
9 j8 B& t# J' B6 J! l7 H: U/ W9 yto update-neighbor-total  t& u0 ^0 [1 [, g. g6 P
2 a1 }. E1 e! R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* N* `6 u) O7 n7 u1 N# R# P1 L; |; x) ~1 B% V; q
! Z+ ^1 S9 g7 K) F5 N( f5 z
end
' w8 @6 G, W4 l9 H. ~/ S: T
* w; R) v, q6 S! J4 H/ Uto update-credibility-ijl
' }0 X. j& s" C) I. @
8 E* E# y; t4 ~! {. ~' r# u* c;;
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。
( O$ l- ~/ O3 Qlet l 0
5 I7 H$ D0 ~: v/ O; Pwhile[ l < people ]6 h( u; n4 n% d( S
;;
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
+ R, j- K/ }# Q) |& P: S[
% |( t1 q( ~% I0 Slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 {4 g8 i! _: e! r0 ~1 X3 Z
if (trade-record-one-j-l-len > 3)( E/ R1 g1 s/ H) Y- j" ?
[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! s  M, C+ b2 e2 S5 X8 `' ?3 |: Y1 m
let i 3
. i, G; E) E( I, g( h5 Y5 Elet sum-time 0' T# X) b- X# N
while[i < trade-record-one-len]1 z+ X' h9 [0 ?& b7 k/ p
[
. L) h5 |" t' D$ ~9 ^+ cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% _# h' ], o" p4 R
set i% M- ^; a$ T; j! k& \1 Z( e3 M
( i + 1)
& l- K3 N6 H8 F  S( Q
]
" s3 ]8 L0 P' f, q5 S3 S  w0 elet credibility-i-j-l 08 @' K( Q# E' W* c# V
;;i
评价(jjl的评价)
4 A+ s7 h6 m! S- Plet j 3
' a+ Y- l9 D8 O, A6 W# f- v6 _( l: Xlet k 4
  ]+ }1 w& w% j) {5 Awhile[j < trade-record-one-len]0 ~# G4 f: r9 Q$ i* F5 t. Q
[
& J* L% o' q5 Hwhile [((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
: f$ X5 p; r. p/ A8 Z8 E+ E3 ?0 uset 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)
# Z4 o2 m1 d: j) v  gset j# ?8 A8 ?3 v) n+ j/ [
( j + 1)

1 I8 C" @0 c: t5 n. \]" p, C/ i, {+ Z$ L9 f) ]% ~
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 }$ J1 V, @0 {- m. ?% `

8 v+ z/ s2 J- F- q/ a/ x
# u% k# Y/ H* T! s4 y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 K7 S8 v0 m1 j# `$ a; C4 P;;
及时更新il的评价质量的评价5 P* D# U3 E7 ~9 J2 |; x- x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( m3 |( k$ H$ ~2 ?6 e* _set l (l + 1)
9 K2 H! y5 X4 N) ]$ S; @5 z]
3 l$ l: ?  N, }# k& l: |+ aend
$ y% ^7 A' J; y0 ?0 C& q/ ]& s. M8 o. R3 n
to update-credibility-list$ c, u& p8 @* y$ \& R; `
let i 05 x+ |( u3 [6 }; ?" g  T
while[i < people]
  J0 j$ I6 U* i+ j: d[! ]2 J, r; X: M: e( |. s
let j 0
- B! e; z  k& s, k, T0 X. [2 Zlet note 0" A4 j/ y# S! o; S# f
let k 0: C! K5 }8 h) A5 d# J0 H
;;
计作出过评价的邻居节点的数目: P; n% Q8 Y2 p7 {! C8 Z+ G' {
while[j < people]% z6 l7 Z: n3 t, u' x/ r
[5 w! |+ t" X5 |' k- ]; O8 E& l0 P/ P
if (item j( [credibility] of turtle (i + 1)) != -1)
' a9 I3 v- v& ]: n  b;;
判断是否给本turtle的评价质量做出过评价的节点" s/ Y8 e; N7 X1 J
[set note (note + item j ([credibility]of turtle (i + 1)))1 x9 K* C* s' k/ X
;;*(exp (-(people - 2)))/(people - 2))]

- \  b% b; b8 [3 I! Y; dset k (k + 1)
$ g! Z- @5 E- R- x- ]/ n2 ~]
  r! Q- D8 r4 \: b+ j7 eset j (j + 1)
6 K. U6 a* y4 m( K6 E7 q]8 V& k! t1 J: b
set note (note *(exp (- (1 / k)))/ k)( g5 E0 U$ @3 T7 [8 P) P; V* Z
set credibility-list (replace-item i credibility-list note)
3 b6 n  G; h5 n: B' y. pset i (i + 1)
! _  [$ L' O2 p, `]
! c  G: n; I+ Y( z" {9 mend
. N+ }3 a+ Z. X' p5 ]% N$ l. m
% N9 z+ B, l. [. Nto update-global-reputation-list( z& N4 J  i- v" d4 Q
let j 0
' o+ [& U- [) K4 L0 S+ rwhile[j < people]9 l9 O1 K- d& o+ ~2 e  R
[2 ^( y/ e) b2 F: c7 h3 A( N
let new 0
' C, ]& m2 ]9 E, @" f/ Z( T. e# s% k9 k;;
暂存新的一个全局声誉" a% {6 |3 e1 H' g8 @3 H9 `* W
let i 0
: I; G  c: f2 b$ V& M  }0 a' \let sum-money 02 [5 S, a7 T; k) T
let credibility-money 0& m& E3 ~. V" Z% w
while [i < people]
& Z$ b$ U; a  l: ~# N/ [. E[
- n5 w; K' g' ~7 A! Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( s. L4 v; \8 x' `7 {0 [9 Z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 Q/ D# n' @' H6 j4 r
set i (i + 1)8 V7 U  ^3 S, M  b. z7 G
]# c4 t: G! t+ ^# \8 S: u
let k 0
; o) q& ^) m4 B- flet new1 06 T3 w* G) |# m' O7 }; i
while [k < people]: ]5 g6 W9 S: U+ v; t5 {
[
/ P2 H( _7 V7 I0 Tset 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)6 t) D0 {# s* Z5 ~
set k (k + 1)
, `: W# X1 B- _( F6 m  S]+ K( t2 `# W5 M* z( k) {
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: R, o2 N( u8 I0 g6 t) _9 Xset global-reputation-list (replace-item j global-reputation-list new)
" F6 `$ N$ \: Z% |1 x$ |2 W( ?set j (j + 1)
/ J( c7 A% [- C+ u]' W* _) F8 W. h( q
end8 r+ w7 F% ]8 u
3 e" ?' N% J6 V
/ k' e/ X6 A7 ?; Y

1 _( a" N4 h' X7 y: I! Y4 t3 Sto get-color
3 X: w/ }" j4 O* f  C
3 S- ]! o. T# ^- t! O; Qset color blue

+ Y/ @3 }- r; e" @end( ?* Q7 @7 @$ j! i4 S# V, R" B& Q

" O; f6 v  d  d3 ]7 {to poll-class
" A- G5 r2 Z( f1 _: R' kend
+ @3 [$ {7 o1 J0 s8 u
' Q6 p9 }' b( D. G6 B9 k0 f3 dto setup-plot1, r3 G7 K7 M6 ]# V1 r

- \' O, a* k; W5 t! iset-current-plot "Trends-of-Local-reputation"

2 Z# I0 k' K. `; Z" |5 s; P$ m1 J' V; f" p  g9 v8 C/ x
set-plot-x-range 0 xmax

& ^" J, _8 f) Z* U: a6 w4 i+ O" d( E( a
set-plot-y-range 0.0 ymax

2 k0 K7 T1 O4 Z  R+ F" Z) iend% t5 G' e, E1 D3 y1 p, k/ a0 W

# d2 A( l' S8 F' ?' O3 \; tto setup-plot2
" j) j9 Z- b( s$ }; ^7 x) V* n# i; ?& `2 V9 F: `
set-current-plot "Trends-of-global-reputation"
3 W! _; k# C% @! I8 a3 Z
7 r) `" ^! ~$ D/ v) A6 {0 L/ A
set-plot-x-range 0 xmax
9 p+ @9 ]9 L/ c- {+ h0 \$ S
/ G- R; O6 I, \: `5 _, E3 O
set-plot-y-range 0.0 ymax
5 Y; D) k% ?$ L6 r- A$ ]
end3 C0 ~/ S9 |* R* V* q6 {8 ~) H

3 a" h2 v3 s# H- Pto setup-plot39 ?) {+ J$ Z4 b4 h4 D9 @

9 g4 G1 u" a% F  B( M  W7 Yset-current-plot "Trends-of-credibility"

' h! ?' s5 v- ^/ L# ?4 w
2 \$ \1 G3 E1 l8 B3 Aset-plot-x-range 0 xmax

9 z" S$ x% J# n' y9 [( I9 f  w) }. V% H; @" @8 w: t+ R
set-plot-y-range 0.0 ymax

, T! ?2 g+ t. Z% i1 K9 N! kend
/ ^% \% K" ?, S: L/ B
- G: C1 m$ J8 L. }2 |) \to do-plots, X0 c4 H- P. I9 P( @
set-current-plot "Trends-of-Local-reputation": `! ?. N8 b9 D# \* q
set-current-plot-pen "Honest service"
$ s- A* Y3 W( `( f. Vend1 T5 M4 B8 k& x

: R- |2 K3 Q; T$ l: u- p[ 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.
$ V9 Y, [$ ?# {, @5 x( U& m; g$ S* Q) P7 |3 u5 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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