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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:
. k  P% X6 g3 ~* X/ O: C3 e2 {& bto do-business / i, D% [# F7 N+ r# p+ [, P3 W1 _
rt random 3605 _! N! C# E" _' g5 D- ~
fd 14 a4 l/ d. X, s: J3 R
ifelse(other turtles-here != nobody)[
0 J; v8 i0 v2 j   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.
, h6 x- M9 p" M% a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 a5 p6 J  m# p9 C% p  `6 ~3 P7 t& h   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: C) q4 I8 l: P& n: ~   set [trade-record-one-len] of self length [trade-record-one] of self5 d7 n' G: t  D2 Q. Q
   set trade-record-current( list (timer) (random money-upper-limit))
2 L0 @4 r3 v: Q! V! M4 T$ W. m$ @
3 _( r) I3 N4 Y  a: v问题的提示如下:: R) D% m1 r4 ^8 ^2 ]; g0 Z

) J2 A8 K0 N: G3 S7 lerror while turtle 50 running OF in procedure DO-BUSINESS
/ |2 P; Y1 N, _, H( ^: s+ I  called by procedure GO; f- w3 r/ k, _9 p8 o- J* d  F
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 ~" s$ [3 W, b' j+ l
(halted running of go)
' ~' G+ r1 l& H  E4 y( g
1 U' X( b1 i' A" C! p' }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~~9 Z; V* D$ _6 `1 Q4 N1 F# s
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 C2 g4 G' w. ^2 h0 S: H) A0 K
globals[
" a/ f4 Y; W8 M/ Lxmax
0 x" D' p4 |0 g' o) Qymax; @2 S* R! |3 `: D3 e) ]8 h
global-reputation-list5 K# B9 b! n3 ^2 a2 {

3 `, h9 a$ h; u. @1 g$ I' c;;
每一个turtle的全局声誉都存在此LIST# ]/ o. }3 d: Q) o5 g% a1 G! H
credibility-list1 |5 f  j: l( d6 n$ {" z) i& J
;;
每一个turtle的评价可信度9 s5 |6 ?3 V  o+ p
honest-service, \) h4 ~0 E2 j( c9 K
unhonest-service, `$ b5 C% l* A. a. z2 g* i
oscillation# r0 g. ?. b1 U8 I/ G$ ~3 i5 s
rand-dynamic6 E- l- i+ T- H/ n
]  R+ A. \$ z, }- ^1 g1 |, j& y5 ~
" W" }' T. D, k. }
turtles-own[9 [4 L, H$ @0 Q
trade-record-all( L7 Y0 }+ z0 o0 t! o3 |
;;a list of lists,
trade-record-one组成
+ t. {8 ]5 v) D6 o3 G4 S4 Q8 w/ Ctrade-record-one- s1 m# D/ \( k( w) Y6 z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 \5 M% M3 ~) s$ D( U

2 r8 y7 Z5 O" s+ |, r! A4 A0 t. };;[
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]]: T: b5 m/ S& B5 a
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]; i, _7 C  g4 n: o2 m
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list7 I$ E2 ~! Y' O" R1 z) B9 ?
neighbor-total
& E0 n! {4 ?% @# D;;
记录该turtle的邻居节点的数目- d( t' _/ ?/ Q' |4 e
trade-time2 L: y) C" ?# r8 _7 V
;;
当前发生交易的turtle的交易时间
. ^% K! o/ E  w; eappraise-give' `8 G  f" m/ a# X$ ^' x
;;
当前发生交易时给出的评价
5 e% ~/ W4 d( m( {8 r1 n5 W/ R: O0 fappraise-receive
8 Q5 \. }4 Z0 n2 L;;
当前发生交易时收到的评价
" a# }% {0 H% ~* t  Zappraise-time
/ l) |& a1 l) m3 @2 _8 l;;
当前发生交易时的评价时间
/ P6 [. _0 o5 `7 K! e( y: [local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ ^3 J9 }% y, S& N; _6 G. T  X
trade-times-total$ I2 L* V1 `# o' B: }6 F0 V
;;
与当前turtle的交易总次数' l3 N& V+ m1 J8 e
trade-money-total+ S9 w5 y2 f* [0 @
;;
与当前turtle的交易总金额
' [  t/ f- a" R; W: x* ylocal-reputation5 [+ i1 b& V0 m; `
global-reputation
* b2 g- E) Y9 W( z9 V9 ucredibility: S, P6 R, p) R4 }' g
;;
评价可信度,每次交易后都需要更新6 U9 q3 h* G- x0 X/ v- o
credibility-all
9 C4 r* V$ G0 E6 ~; V5 [;;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
3 H1 C# S' e: F+ H- {, n, H7 T# W  S6 R+ q& J  \- w' ^6 T* U
;;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' T& I! G3 C* O+ O
credibility-one
& H' k9 o7 @& u' O- R. d4 z! U;;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+ {7 a* S. i: ~1 _' B7 E
global-proportion6 p! h- L! I1 n; M; }1 i/ D
customer
3 H' I  P. L' Q7 C0 p  |0 b8 g( ~9 `customer-no
: I: X+ o' T" s' Q- Qtrust-ok
- O+ o. V3 A6 etrade-record-one-len;;trade-record-one的长度
5 q2 ~$ J5 U: }/ d]. T+ H' ]' G1 d2 j1 y

/ a! m1 [. ^1 w' c;;setup procedure8 f4 k( F9 Y) o
3 @! J' L/ o" u7 |; P2 ~# s
to setup
) ^( ^& g7 C3 S8 T! g" }: a
/ l" p/ t' V. G& bca

! t9 k# ]# E& j$ g: E9 f9 y6 O  @3 E2 k% _4 u
initialize-settings
. s" n8 ]3 z- ?& z0 G
% F; C. w6 ^6 R( \
crt people [setup-turtles]
6 N4 H; K3 w( z7 M& Q/ h, ?2 r

# i. Y& o& h3 R: ?/ `reset-timer

3 ]6 {) R* g% t( R+ Z+ l
% o1 l& }) H3 R! r/ ipoll-class
4 w# P. i- s! T: S% g

3 f" a/ i: y- k  gsetup-plots
( h6 z1 v2 g% Q
5 Q7 u1 X. D- O2 {. D
do-plots

' B$ K: ]: @% _) E' \" B' k3 Q% B( J, y6 |end; b& B" \8 _9 o& ~* v. \
; r8 @* y. P$ R" h  d7 A7 z
to initialize-settings
' j% K1 F! D. @, L4 z, c( L
( h7 j! W- F% j( W- v  D' hset global-reputation-list []
# ?! B9 A% p1 z+ x7 A# {7 i

1 ]. c$ k' _5 F* @/ s* Nset credibility-list n-values people [0.5]
* B6 q0 N2 f7 U2 n
1 l% k" T* O. x
set honest-service 0

7 t# P7 S( o9 L4 e, S) u/ \& J3 @, [( `# `; p5 z  A
set unhonest-service 0
% O6 ?7 D- s, j( C0 v
' B0 K  b; B1 Q% x4 a( b+ ]! |
set oscillation 0

* k6 j) m; @0 n: R9 ^& {: R; b: Q( |) C) j7 v
set rand-dynamic 0

- _9 y3 t3 }# x1 `1 d; gend
; C+ B# v+ d' `& `7 [9 W! F/ Q+ s- W5 z8 {$ c6 a
to setup-turtles ' O# Z! I3 x; N. {" f
set shape "person"
; a# H% X9 B: W+ psetxy random-xcor random-ycor4 t( y, `: d+ S: o4 T
set trade-record-one []8 v/ R  C% U2 y% D+ m& h/ o6 a

  ?# R( e- N& g5 S# Z, pset trade-record-all n-values people [(list (? + 1) 0 0)] - ?1 h) w3 D5 f6 c$ {6 n
) I5 A* d) w  ~. q- R! G/ y2 z
set trade-record-current [], e6 z9 A* A/ Y! g; s7 U
set credibility-receive []
2 @2 J, T1 U7 `7 J; m9 uset local-reputation 0.5/ F$ e( E4 q. @  [
set neighbor-total 0
/ {" q9 d6 i* _9 X* \set trade-times-total 0& [$ z5 F3 H) c: _2 X( v3 T
set trade-money-total 0; x4 Y  ]: D# d- p$ k
set customer nobody
; }; S4 L- I) W$ O7 Tset credibility-all n-values people [creat-credibility]  @' s# G. [: A7 A' d2 C0 h
set credibility n-values people [-1]! Z# a; \+ ]  E$ w+ \
get-color5 E5 Q3 y& P% d

$ n$ @0 H9 B- i, o" z, eend
4 ~  a7 P' K% L$ Z" Z- [
2 a$ |7 Y' N0 |/ Xto-report creat-credibility  G& a5 B/ e/ E, A# u/ [% Z" j9 |
report n-values people [0.5]
) D( e* Z( P3 R) @2 U0 L- Lend( X+ v$ o! J( y: S# P7 p3 ?$ q

/ \0 ?: g; r9 T% h8 F) m6 {3 rto setup-plots
. e' W' z$ a+ Y* e/ T7 `4 M
% G3 ^' U! ]& q% r5 F3 fset xmax 30

% G. m3 g4 R% |* f2 m7 k3 C9 ?" `1 p' S4 V& M) c
set ymax 1.0

. d$ X6 Y9 l1 F! S; W7 V; _5 z  m  j, x
clear-all-plots
4 }. U! S, e  Q* c0 S$ B, I
7 z+ e9 N9 L1 Q# K, g: B
setup-plot1
# o; K, X1 A6 T' Y% [1 n) F5 V
9 j% j4 k0 J' W# ^
setup-plot2
) ?! v6 b  {2 D/ j

& P  R( m8 V2 m' |setup-plot3

2 O6 @/ Q6 ]9 c5 m0 _end
7 L2 x5 ~2 P2 I0 |& }( z3 ?" n5 ~5 ^- `2 U/ T( o- s
;;run time procedures
1 N. z" S0 V2 Z" B! G  G5 z$ y1 j/ y; E% O5 t- W5 x
to go
$ S( k+ U" I& c  @9 m9 e6 m. |
6 _' `0 d: y7 r( U3 Uask turtles [do-business]

4 A, B# @# Z8 f% Lend
, ~$ h4 a' }5 u" e- ~( M' A, f! P' L8 E: |
to do-business & [% s4 b0 G- C( u5 U0 j3 K8 u4 y
; Q+ ?' j* V6 ^9 s1 n. e+ v

% A: {% K; {  @" `0 F, W$ F+ Ort random 360
* i. L8 F! s' [8 A$ [8 P  [; ]

0 z$ g+ X+ n; q& P, y$ Cfd 1
6 h# d5 B' _( k( U

- b& [- M; r: Yifelse(other turtles-here != nobody)[

" `* b6 [" s# i/ k3 a& Q* y
- X# j0 ^+ g6 E% k: t6 ^, yset customer one-of other turtles-here
3 s7 K$ k, ]! l' i7 c$ N, o1 A
# \' J4 D8 m) Z
;; set [customer] of customer myself
6 ?( R& W. R0 s

) I( L. c: Z2 Z) Bset [trade-record-one] of self item (([who] of customer) - 1)
5 [) @' x( k$ J  q  I$ W' I[trade-record-all]of self7 d% t* T# u( x* `6 X+ n% r4 F9 i7 u
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 e+ i) C  e4 x1 J! v: r& i  H

; T" A+ c$ x* f! ~' J2 xset [trade-record-one] of customer item (([who] of self) - 1)
, _2 w& d8 B* W/ h9 N; p[trade-record-all]of customer
& e  h! M* j8 T$ B; j
1 b* i' X7 j. w  f
set [trade-record-one-len] of self length [trade-record-one] of self
  q# r; l4 l6 i
5 p1 [& m3 L" r( H. }" i
set trade-record-current( list (timer) (random money-upper-limit))

: x& p. l0 d" G9 Q( x) U* L) {# h! ]+ F
ask self [do-trust]% p" y2 v- B% A, o2 G! `
;;
先求ij的信任度* d7 j3 N9 R. k3 V; G
' H$ q' Y) i* P6 J
if ([trust-ok] of self)0 W& u6 Z2 Y6 s$ Z7 b
;;
根据ij的信任度来决定是否与j进行交易[
2 q& ]+ V  h/ t1 Vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 l3 Y" C/ O  D! E' ~5 ^8 T- K& R0 u2 ?1 {8 f6 v
[
3 o8 ^7 G% x# ]9 @) n% d
2 C. I& z1 C8 u
do-trade
  k5 @1 E2 k% t  X* A& N$ {
* C% |5 ^# T. D
update-credibility-ijl
9 o5 `7 ^) v% t  ]0 b6 p
. v9 t0 F& s' D- }$ c4 J
update-credibility-list* G% \, c9 }- g' N
: B! A) W; ?+ H1 _+ M
/ m$ {' C3 ^4 n7 d
update-global-reputation-list

# C% R' ]2 r4 Q4 {5 S8 P3 E! p" z
$ [7 z8 N3 n# p: Apoll-class
. q- ^# F0 l, u# f

* G1 D; I( A& _& N) B  Hget-color
$ \- V, v% ~- W

5 g. d* D3 m3 A# `. j; \: D]]- {3 K* E. ~' j- C: T) B5 Q

2 E$ u0 Q, n2 v4 _; _% A;;
如果所得的信任度满足条件,则进行交易
$ `1 P/ ^. |+ E1 ~: g! M) d6 W) @) ?7 S! G7 ~
[

3 b% u8 Z. w* s& S3 n" C6 H7 }! v: m2 C0 F
rt random 360
: ~  |$ ~( E; U) ~# y. O* t
. v) F+ M- H* Q
fd 1

4 b8 s! S# Z" d* p9 o9 `5 {
; Z  K7 y! M7 a7 l3 W2 g% F$ g- n]
6 {( n6 m+ [# o" I/ }, i

9 |1 V1 P2 a3 x' g! n) eend

6 p8 k9 @3 ~$ U1 Q3 s4 q$ W: V
to do-trust ' p& Q6 ], {# Z# P1 S/ T1 ?9 z
set trust-ok False! u/ H( R! s" R  h7 ^' r

3 Y7 f$ G" `0 \8 H, E
" m- X9 v: z8 R. k, i) n5 M7 K" u
let max-trade-times 0, P8 L- n4 m& s; k+ z% ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ H* \4 r* _" V/ r0 {let max-trade-money 0- \. `! C3 G6 O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& m$ M0 m9 _( u& z' `2 klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# B2 r- Y) q6 j( b+ X
+ p1 G1 |- p1 b3 n9 q( d
/ U- ^/ x+ Q, u) A3 R2 t3 s
get-global-proportion. J$ m0 `% S6 k
let trust-value  ]( p1 i. b* ~# S& m# 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)
* h/ ?& W9 L- E. P. F7 j: b
if(trust-value > trade-trust-value)
2 D6 U5 U3 b' }- Y/ }- n2 I4 I[set trust-ok true]
( _0 e9 s8 C0 o- R$ p! G# K' {end" `, }2 N0 y( d. p

$ D4 r* V$ f# W# Z5 sto get-global-proportion
( Y# s: r3 W6 gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ _  A- \6 X% Q) B! K  P
[set global-proportion 0]
# {& g8 i- e! U: K; I  ~, d[let i 0
2 v% W: V" p, Y& ]9 X% Flet sum-money 0- ]; ~2 ~; l7 E0 l& ~
while[ i < people]0 _0 C" }+ q  I. U  R
[
) S1 c) o3 c( D) b9 @& P( E1 ]) Hif( length (item i+ a% M4 L. c/ y- Z( D
[trade-record-all] of customer) > 3 )
' J0 d* Z) i, z. ~
[0 g7 k, |: O- x. I  W7 u. n8 Q4 t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& C. Q3 j/ ?/ B) \$ L/ C; t
]
+ Z7 M  v" }& ]# [! [9 A]
( _, ^8 e6 {5 b: k5 Plet j 0; _" @" _5 ]9 X- g- P* K5 v8 M, T5 _
let note 0
1 P! X; j1 ~# y3 ~2 ]while[ j < people]
" u  @, d0 H/ z: {& g[3 Y# v* n$ `- D- \- G4 G
if( length (item i) O' D- ~8 @: _3 }( Q
[trade-record-all] of customer) > 3 )
& i2 e; g7 B; h8 D5 X$ n
[
" Y  A9 [9 f+ n' e* r' v0 Sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- D8 H5 W+ T* t0 e! ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 t! U% A7 x3 ~9 W8 Z( Z7 ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 V/ t/ n0 L9 w# E+ S$ P) T: P]) _2 n# ]" g% C8 @/ c+ W  u; {
]
4 P$ ]+ B' b- Q: d) ~! E4 n8 wset global-proportion note1 Q2 ^+ ?, d4 m8 ^  Q! o5 T4 ^9 c
]7 K% Q$ G9 l7 r+ `0 g7 \6 Q
end+ r" G1 n8 D0 f
/ p1 E1 H7 H3 A' \( w. y4 i" q% [
to do-trade+ `' {; j) M% _3 W
;;
这个过程实际上是给双方作出评价的过程
8 P& K" r. x! R* U8 Z8 N$ Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- M+ f9 V* a' x* c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. o7 r1 D7 w% w! b8 k) \% L: n+ Wset trade-record-current lput(timer) trade-record-current
. e2 x6 Y. W! [8 w; H# e# y  h% Z;;
评价时间& j$ y: r; r" e# t
ask myself [
; I: |8 d* `3 ~5 J/ @) gupdate-local-reputation
, l! a6 m0 s, y4 vset trade-record-current lput([local-reputation] of myself) trade-record-current
( X. n; i* W. m- \]
3 F" M9 ?4 i0 [, s$ bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ u! ]. r0 y9 l# M0 k4 N/ {
;;
将此次交易的记录加入到trade-record-one2 T, p5 g: a) U: w: X; g6 s. `
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 l9 @. l' ?4 B+ m
let note (item 2 trade-record-current )
0 ~5 _& o5 b4 `1 ^4 m) Eset trade-record-current3 x" y+ o' i3 W' \" G
(replace-item 2 trade-record-current (item 3 trade-record-current))
- j% p2 s( S/ z/ T
set trade-record-current
; M# i5 x; ~! l- m( y- Y(replace-item 3 trade-record-current note)
1 G8 c$ t( Y$ z$ C9 z5 }) i3 D7 W, }
; S/ {) U9 `) v" U  S6 M
ask customer [7 w+ {$ k; _: G8 ?$ k. r- Z  I9 U
update-local-reputation6 ?' J9 a  _# x1 K8 L/ A4 [7 F, K. |
set trade-record-current
* J* T0 \! @! U! n3 k0 S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) e3 a6 ?4 r( X/ |. e) y
]. f) n6 @0 v1 z4 a. D+ e$ c

4 F( S3 E% ?; {2 X% a1 A# f
( D& Z& G8 w! `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* B/ Q$ U& _& }0 h
* W% l! ^# Y' _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 ?3 e/ ]6 O' @- I
;;
将此次交易的记录加入到customertrade-record-all& W5 m; X2 Q2 B% [, p
end$ o- K; N# }0 O: W  |* y6 |! I

5 B* l9 u. D# P8 z# m  fto update-local-reputation
7 r4 u! H) j+ a* Iset [trade-record-one-len] of myself length [trade-record-one] of myself
- l# a1 j+ I2 D2 B) a5 H  s* y9 D: `  `! v0 ]

. p' J* M+ Q. m% L, d;;if [trade-record-one-len] of myself > 3

& S" T# |0 P4 l5 i' E" Jupdate-neighbor-total
( w. @! K* V# H* C) n" u/ v* l8 L;;
更新邻居节点的数目,在此进行, X5 W& I) H; [# n' ]& z0 j5 G1 w* e
let i 37 L/ Z' w3 }1 n- t
let sum-time 0
1 X" ^6 ~* q# S4 [; J, X' Swhile[i < [trade-record-one-len] of myself]
, I& Z4 @6 o; e% n1 H( u6 Y: k[/ q& }3 {7 N% l5 j/ j8 h6 s
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ s9 F' B; F: w4 t- D
set i6 ^" U7 k1 W. T
( i + 1)
' w' z' \+ A+ t9 |
]
* D+ o7 i% ?# C+ `& l5 Qlet j 3
2 o0 \6 L0 g) G2 q8 \let sum-money 0! y- b  Z9 X; S# d8 K6 k) x
while[j < [trade-record-one-len] of myself]
4 z# T3 W% F  T: H# C, V[' V  x/ ?1 g4 K5 a6 @3 l+ H( I; t
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)
" [# S" o+ I3 x5 v1 |3 Jset j! P5 F6 K7 U& I6 F0 y* M  N+ Z3 K
( j + 1)

- V# @) Y# z& g# Z]- J9 e+ j; v+ g' h
let k 37 h0 O$ w8 v( `% S" Y; }, x+ n7 |" u( S
let power 0
6 g& g6 Q! E  Q* Q+ f: Plet local 09 ~' h2 k6 _# T
while [k <[trade-record-one-len] of myself]% ?( l. b/ [; X7 [* a2 S. X
[
- Y- A; z' x- o; L( m9 uset 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)
" ~  w5 p8 O* Z& [# ^# l) c# m: T: Bset k (k + 1)
# V' o" `, y' x], c  |* h( A7 @" d/ F0 c
set [local-reputation] of myself (local)$ [8 B  H. x6 }) K
end
8 z2 {7 s* g5 L  z
9 c! ^  T+ [/ ~: Qto update-neighbor-total+ C5 N2 L' e3 a1 v
" T# |) A7 p8 ^  O$ J1 h- I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], ~3 O6 _2 i0 X. v/ V  R% R
& D8 V8 {/ c5 N: a6 I* F- p
- ?  x  V, p# n
end
% w! n; T8 g: e, b, x  K) c" v7 @* K4 Q
to update-credibility-ijl 5 @; j) l+ q& E4 H* Y! ]

# b2 B* p1 Z; Q' r' \- 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。
' ~, y% U( S$ H* Flet l 0, }* w7 D- A9 ~1 P8 _
while[ l < people ]
+ e8 N6 @/ i! H  h3 L;;
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4 p0 c/ K( m- q% X7 Z) m. s3 [
[' d  O9 o0 M) F0 x
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 v8 }' y7 @3 }+ {; s7 o& X
if (trade-record-one-j-l-len > 3)! y: O$ r: {, |6 ?; L, ?% N7 Q
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
# G& g( ?0 ]& g7 W* C! t7 G7 ^let i 3
  C6 x; a! j1 Y, _let sum-time 09 u# @$ ]: E+ i
while[i < trade-record-one-len]
9 i5 b- W/ \8 c6 S% C/ R) W[
* D7 d# R3 [9 b$ _* `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 s; H; n5 K- C# K8 {& y4 Y, T1 B# V
set i
( F5 _* S- ?$ _4 y! w( i + 1)

  U9 e1 v( F* J' |' k+ a0 T]6 ^* @1 z% k. E: b) [, T
let credibility-i-j-l 0% ]0 [; y* E* Q: H
;;i
评价(jjl的评价)  u9 H  `* A) J# z
let j 3/ @% v) h3 |' P- ]( x( A% b9 |- M) C
let k 4
, T' \( A9 m3 P, rwhile[j < trade-record-one-len]: }$ n5 D( I. ^; T( C- @# c5 [" G
[
/ ]  i" ^  s* O9 Ywhile [((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* D2 J7 h$ |, N
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)
" o6 ~7 D+ h6 Q, {4 S: eset j7 W0 v9 x0 Z6 i2 Y$ [) E) H
( j + 1)

  Z7 C& z& I: g, ^]
2 E5 P. H3 H( ]+ y; Mset [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 ))+ n, K+ l! K! y  }. O
4 Q: u5 m2 G# \( S2 f; i) R" y

- Z0 X. d8 i( W7 G" Q$ Plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ s% z9 q/ I! N- v1 z3 F$ M( w0 C;;
及时更新il的评价质量的评价7 J, X. {  d+ X+ H
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 e( n' k# b& \1 O/ E  u# r
set l (l + 1)
6 J; \: x. w* N/ y- ]9 []
( K6 i* b% U7 ~( C6 C+ R5 mend
! {+ s$ K5 T( u: K' ]) w' g  ?* c, o) ^8 n$ S0 J3 |. ~! H( {: ^4 t9 W
to update-credibility-list
- a9 c& `% T4 q( h6 g# \% h# Alet i 0" x; |% `/ Z# }3 C
while[i < people]
. T2 y9 n. N  P4 s* ?[" j; i" v7 J, S3 i: q) x
let j 0
5 A9 b9 V9 |$ n* klet note 0
2 ?2 C. H) `! a5 Jlet k 01 a4 @5 ]5 V5 C4 h/ [( [
;;
计作出过评价的邻居节点的数目
6 \8 w' T/ k: a7 Xwhile[j < people]
# l8 r* |) H( D' B1 Q$ X[
9 W8 R: ?/ C) oif (item j( [credibility] of turtle (i + 1)) != -1)
& u! R* k1 w0 T7 Y1 O;;
判断是否给本turtle的评价质量做出过评价的节点/ `1 z) q2 J; V- K1 i& p
[set note (note + item j ([credibility]of turtle (i + 1)))' `$ u# H) ~# ~7 Y* l
;;*(exp (-(people - 2)))/(people - 2))]

4 h- F9 a. T1 Q6 }$ Xset k (k + 1)
- \' W( M1 U& D. C" Q2 ^/ r]- V4 r, R5 D9 K5 P; l
set j (j + 1)
* [: F6 [, S3 D& k]
1 [7 C" s, C, }  ~. ]set note (note *(exp (- (1 / k)))/ k)
0 w' Z. }7 x$ I3 p# gset credibility-list (replace-item i credibility-list note)
& c  t0 ~9 N+ v* G4 Hset i (i + 1)8 A- p. w; @7 W
]
6 R* s$ k+ C$ l3 r6 i, \, K& Vend
- m" |7 i& s! ]" W
4 s- Y* `2 C5 ~3 ^& ato update-global-reputation-list  k- X& B# }* p
let j 0
4 ^. S  n( K; t/ @. s( J/ G1 L+ V/ w0 ~) Qwhile[j < people]9 n! l  U, m( ]; h3 h- x6 L& a
[
: m# S3 R& I2 plet new 0
" `. C, Y8 \7 K# p! [) I6 Y;;
暂存新的一个全局声誉
8 M! S# T2 m% @* \5 k: ~4 ylet i 0* ?+ I5 M& @+ I" ]6 e* c
let sum-money 0
# O( {8 e! t6 j& Q: n2 wlet credibility-money 0
4 w  D- P* M# W, x# @while [i < people]
' H  A5 ~% v) n$ Y4 d+ c[
+ d! {' R7 [0 _' j, l) @" Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- y9 O5 X& u4 cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 G$ d* O3 v7 L7 Z! {5 D" Jset i (i + 1)
; M" S& O! Z3 N/ ?3 r8 g- g]
0 U4 b! s4 b: P- ]- _" jlet k 0) K( x( g% `- g: O
let new1 0  o, L, c, z6 g: m0 n( a
while [k < people]
6 e. I8 F* O$ S7 L3 w/ f7 K9 [) o' ~2 _[" b* c$ Q. k& i, V9 S- d% _
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)9 E# T3 r! {+ D8 g. j; {
set k (k + 1)
. E( W' `: `8 K6 {! y]
9 {5 i% h) ?3 j' k6 Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 D5 o( A( B( _
set global-reputation-list (replace-item j global-reputation-list new)0 i5 \4 ~0 ^0 X8 K3 h4 s8 X
set j (j + 1)$ [: t. u7 a- [9 t  Q
]
- M. n2 x% `2 v0 u& o% A/ `end
5 P2 J# i& g% O4 F5 _: c! j) I0 z1 F; e& `- w- z- E

7 N. r% j0 n% o; L0 d0 H! ~
4 `6 A7 N* ]8 d* @' lto get-color
) a3 z( m- A9 _- x. w4 Y7 e1 i5 _' f" b' N8 o1 z
set color blue
) l' B3 b3 V+ k& _4 W" C
end! y2 B# i% o8 b% P# U. `

$ h* |4 E" H7 T8 G7 a% nto poll-class
+ \( c1 h1 O* {7 b; L) h  {- j5 rend! D$ G) Y2 I; o: M- V' O+ S5 I8 z
7 g) o  `8 f, \; t5 U6 S- C! c8 |
to setup-plot1
! k! o9 r! ?) |) s3 v8 l9 _4 D+ V# [5 D  n) i
set-current-plot "Trends-of-Local-reputation"

7 {% M6 A" X# Z# m3 o- }0 P8 j7 W3 s! M! j0 E0 ^
set-plot-x-range 0 xmax

; {: k* ]/ W0 L) h& M* a. ^/ M: i7 M5 y
set-plot-y-range 0.0 ymax
3 Z6 T& K6 A1 {4 L. E5 S4 p
end
# V9 q) w/ I, B, C, ~! y4 \5 f- {" O% o9 S7 `6 J, s
to setup-plot2& m4 K3 m* m! [6 T- a

" E* [% L# r: B5 y1 Mset-current-plot "Trends-of-global-reputation"
- Z/ N/ P5 u' q  d/ Q

+ l# }) k$ ~6 f1 oset-plot-x-range 0 xmax

- h: n8 G7 N. y3 D/ l6 ]
7 c- o4 G* z: V, Y! v% D! Qset-plot-y-range 0.0 ymax
3 m. y4 C* y5 ?4 L
end
  Q+ }4 S8 s; S$ A3 o, ^1 b) X
. D* H& O/ e; d- gto setup-plot3, X% Z9 L, Q) S, ?9 ^7 D9 ?( k

) u+ o9 r0 o+ ^4 T+ uset-current-plot "Trends-of-credibility"
/ D0 e+ h! V; d
/ D/ c! A) ]4 R# X6 w. {: V
set-plot-x-range 0 xmax

, d0 G9 n8 ~& {* I3 _* C6 @7 c0 D. v' N0 f( r4 n( t5 r$ ?
set-plot-y-range 0.0 ymax

& @" ], v; d$ e2 ?# @2 Lend
$ c( C+ s$ m) d4 S! m9 M1 h- h9 B  Y( w
to do-plots
8 [0 M( P8 t4 q; A1 Y3 ]set-current-plot "Trends-of-Local-reputation"! m/ g7 ?" D  _% O
set-current-plot-pen "Honest service"* M5 I* B9 W+ V1 r  q0 [
end
. e9 c% X" k8 T: j. c% w* J5 J; h3 ?8 g2 d; y
[ 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.
4 [& \; c5 u9 x7 \  K0 w& \2 T; Q' P( }# l  z0 k
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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