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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:
9 h% I, R% \+ ~, z- z4 ?# K2 Hto do-business % q, P/ @! a* _' y
rt random 360* |2 X; Z. y& e9 z; S
fd 1, z& j3 q2 k6 P2 x
ifelse(other turtles-here != nobody)[
" i* T- ]0 m* u8 w) R   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.
8 q6 L3 N: J! a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 |' p0 O3 k, A# I+ H8 q- [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* T4 Y) r6 q' W5 l  Q8 A1 A
   set [trade-record-one-len] of self length [trade-record-one] of self
4 z2 o* J5 y- M" o( n) }) e5 H. n   set trade-record-current( list (timer) (random money-upper-limit))1 I  y7 H1 f: N4 e& J

% ^5 ^# Y, \3 K5 j6 a3 {问题的提示如下:3 F8 J( X! A+ o2 u6 M9 w, l! ]$ x. e

3 s0 ?8 @, A* m4 Merror while turtle 50 running OF in procedure DO-BUSINESS: @6 u5 o+ E1 r$ Z
  called by procedure GO) I! R9 d0 i# O* F+ q% D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( g) \0 a4 w# S& R8 z
(halted running of go)
* k' Y) V  X$ l$ t; I1 f
6 t8 M7 |, _5 D) o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~~- E) r$ D' D8 A: W, l9 G
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
2 }( G& K; N9 ]6 t7 h8 a: M; Zglobals[  g, C; ?) a3 X! v% p0 ~
xmax. }$ L6 G" d+ R: C* @$ v! c
ymax
" f% F+ R0 b1 \5 ]8 Mglobal-reputation-list8 O. h( E1 a$ u4 J$ P$ |3 A, R

+ Y" p- u- ~- _7 U;;
每一个turtle的全局声誉都存在此LIST6 r5 J/ \6 s0 R% j, X3 x& W
credibility-list
6 b2 F3 Y  G$ t;;
每一个turtle的评价可信度
' k, G, G, V. U! ~4 S# _honest-service: X4 y7 k; N; h( P$ _5 a% ?8 h; M  W
unhonest-service
' E2 Y2 ]$ V5 X! E+ u% C( \- aoscillation0 U* _1 m9 U6 y+ _
rand-dynamic
/ N  {6 E+ G4 j% F; Y]. R. {  X/ j( _- b* t

$ e2 c, X3 Q: lturtles-own[
/ |- q1 h: T# F8 Xtrade-record-all+ g4 s2 g  J' R( ?: P
;;a list of lists,
trade-record-one组成  A0 t- C4 p& f$ C+ R1 p* [/ A+ b
trade-record-one1 Y% l) m$ s+ p9 e2 E# x, r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) m4 |2 T- B( N  v1 G4 v; K; L- ~5 G4 l+ v
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]- d) ~! k, `4 N( r* B7 t2 c: D: v4 x
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]
: \7 `2 @3 y' I4 Y) x+ o. jcredibility-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
* ~) n! J$ T3 ~* ~neighbor-total3 t1 p$ |/ h! G  {9 R; M
;;
记录该turtle的邻居节点的数目
" L1 y" n& \  A& T5 h2 p6 q9 Vtrade-time
' }" s+ l: C  f  h- a;;
当前发生交易的turtle的交易时间
, K, ^9 d5 @+ g1 A- [4 H% Happraise-give
" I/ @6 _: v( \;;
当前发生交易时给出的评价
" ]9 M; ~  H2 m1 _appraise-receive& Q6 I1 {  l# M
;;
当前发生交易时收到的评价0 f( K" r$ j# L
appraise-time' D) \9 L& V$ q! ~
;;
当前发生交易时的评价时间
. A3 r/ n1 f! i& P# [local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: U( L/ |! b; l9 k7 v; Dtrade-times-total, t2 ~$ d. |7 r- a& x' ?! Q" `$ F
;;
与当前turtle的交易总次数$ p3 @$ ]6 U* y. `
trade-money-total& P+ x$ x* g1 R1 }9 {
;;
与当前turtle的交易总金额
/ q1 z& o9 f+ E* A/ plocal-reputation: J$ l2 j, f% w( }3 @
global-reputation
. V/ I+ b$ x1 a5 M6 ycredibility; u! T" v/ F! l# k
;;
评价可信度,每次交易后都需要更新
2 N- H1 D. m% C. `5 W+ bcredibility-all
: A$ G3 a1 B+ ?+ \5 T9 s: d;;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& N( M5 Z9 a3 W/ {
! Z! L3 J8 @% A7 d7 q* g
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
! F1 ]8 ^. G; I# K; ccredibility-one
$ P3 i1 \% m. s  ?;;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) B1 {+ W2 V1 G; y
global-proportion. E6 R5 y% {6 U7 ~# H
customer! n6 y: }* F1 t4 u! U
customer-no8 P. h+ ^+ }  P; e2 S+ Y; |
trust-ok
8 V8 t* h! H$ Z: M8 jtrade-record-one-len;;trade-record-one的长度2 f9 H$ X  m; x  B6 e
], p, v& M9 [6 C7 }6 C7 U
4 S1 H3 Z  `* n  a$ y
;;setup procedure
* Y+ g% p# M; e
  {- X9 G* E7 @) C8 _, y* Hto setup
2 B( F8 r* `1 t: [" \7 `
9 e; O" W# f! p, eca

" \# I0 G$ q, W$ \7 \% j- x; M8 i5 A) x) z$ E
initialize-settings

4 }0 z1 q4 \2 H' L5 N2 @  m$ G( b, b& z" I7 ]  @$ u
crt people [setup-turtles]
  w) y, p' L, z2 z- E% ~
2 X. o) ?2 a/ q6 `8 F- b
reset-timer
; o# u: ~" y0 ]. c* o7 Z
& N7 h# E3 V2 }% V  o
poll-class
0 A( u7 p8 O, r/ c) s3 C1 ]! z) p5 H

# K8 O6 l; h: y; N3 G1 E6 V& x8 hsetup-plots
& v  [; ?) f/ b6 a4 r
1 y% T: [+ w* N, w4 R4 Z  Y. I
do-plots
# S# V2 [1 A( l# `8 v
end) Q% M8 g2 t6 ?% K) D

0 d& P# x- c. x$ `+ P: hto initialize-settings$ c% Z; E1 ~6 }7 s7 d2 I
8 X6 W: T' p  d1 y
set global-reputation-list []
4 ^3 m9 O4 n& L! n( X2 M. H7 o+ ^

* W7 s$ l! q7 u* Q! s6 I; uset credibility-list n-values people [0.5]

" U) n4 }7 i. T' R  l- z7 m
! c1 C6 P8 h. Cset honest-service 0
  l% t. v- l: v5 U
0 @: {: H5 O% ]
set unhonest-service 0
. G% g# `4 x0 J; u! A. V* c
' w: }0 B% ~& r; d
set oscillation 0
5 Y7 ?, {5 S- D  u1 R8 T8 O# T
* {. `  a' w1 B+ e9 _( m
set rand-dynamic 0

) b% A9 o7 h  v7 u3 _end9 q1 J; w, h7 M
% u4 \8 V7 F7 N; H& K, l) K" D8 a3 y
to setup-turtles
1 v9 ]/ [# M+ L* v& R) m. y8 Rset shape "person"4 q7 i- R/ t$ q9 E9 t
setxy random-xcor random-ycor' L! N* h' R7 G' R  a/ z
set trade-record-one []$ Q* V% K5 J, W' G- y6 W) N

  S' `( s# f1 l# }set trade-record-all n-values people [(list (? + 1) 0 0)]
4 `9 }% s% S  W! v6 H  `1 p' C
# X7 g  h2 U' P& s1 o/ e
set trade-record-current []* g0 w, }" ~7 |9 ~6 R' I6 ]
set credibility-receive []
2 Y2 P5 d4 S6 H) `set local-reputation 0.5$ L$ y7 M1 O! }8 w) Q) t/ ]* ~
set neighbor-total 0) Q( n: Z9 I( O3 X' u' b9 z
set trade-times-total 0
( E5 V6 o) s: A9 I1 |: Nset trade-money-total 0
( h& H: @$ [+ Hset customer nobody
$ v% s5 Y' Y/ V% r, V# b3 Fset credibility-all n-values people [creat-credibility]2 A4 l) ?5 R, G" C* I% H  K  }4 r- [
set credibility n-values people [-1]3 j% O. P4 r+ R5 k
get-color" y: c5 F( k' z
1 d! A+ O/ e) S( _; s/ D+ ?
end
) X5 @2 g" ^" ~) z2 P" [5 b- ^) k4 v$ ?8 x
to-report creat-credibility
4 v" [9 b; ?3 y9 C# s- r( ^report n-values people [0.5]' d0 u  ^5 x( j5 s1 v
end5 S( N4 ^- S1 ?. B5 X

! A4 x. t  N- g( W$ mto setup-plots" S/ B& a6 |0 t4 Q

5 |( \8 z5 C3 i( Mset xmax 30

3 S9 _+ o& b* d; Q
$ X- p( ]. a( c0 O, I; a* y; hset ymax 1.0

6 c! W/ ~$ U9 g
7 j" b8 |$ X0 i6 t# Rclear-all-plots
. {0 h. B) t# M5 f
# L! g9 @- |& A- x9 N1 q- Z) h$ `
setup-plot1

  k, m0 ?$ ?& \5 o: F5 W1 }
6 g1 p) c  n/ H% l8 ssetup-plot2

" V* E  S! M! Q, M+ f3 N% e6 Z( r1 x/ @* A3 Z
setup-plot3

; V: C9 x' D1 v. J' rend' H0 w0 L1 Q, T3 w( D( e
  S) ?$ a4 T9 \% N) Z
;;run time procedures6 v$ b3 L$ [, Y

0 W3 O5 r; F: Vto go
/ ]% Y1 M( u' S$ [! ]  M8 t& ~1 o- O
ask turtles [do-business]
/ c0 h% S+ z3 M# s8 @
end& a! ~2 ^6 H5 N$ T9 l
8 j! Y' `7 L9 I  h5 @0 J
to do-business ! V7 K3 n. n$ P: I7 o
5 d+ X6 l% G7 H
& f# L# t4 v/ Q# M0 B0 A  g: X& i, h
rt random 360
6 ^1 v* r7 i/ V& y
7 S5 E& u5 M2 N5 K' X
fd 1

9 @' e. T3 O$ s9 Q& \' ?' K7 y* `! d7 {6 j' \* I
ifelse(other turtles-here != nobody)[
* [& _2 Y, `. z) z( ]
* E' I8 j" ?9 D. r5 F0 _
set customer one-of other turtles-here

3 m- A3 L* {5 s1 z: b( n+ Q7 X0 c( X, P3 c3 h8 p2 B
;; set [customer] of customer myself
6 a0 U! ?$ B' _/ d6 @4 \
1 X6 W+ Q& H7 F1 d
set [trade-record-one] of self item (([who] of customer) - 1)3 Q% n" O* A! q3 F# \6 ^
[trade-record-all]of self
2 ?9 J$ ?0 R  u0 [/ Q/ `7 c;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& t/ d2 u4 [2 l  d, }8 B6 i
, @) A: N, ?  J7 {" @" d! J/ Cset [trade-record-one] of customer item (([who] of self) - 1)1 r( l' {7 q- q$ Z/ }
[trade-record-all]of customer

- h2 @% y  E7 L9 K( z4 K  C+ u: b0 y1 O# S* S% w3 N8 ~/ ?
set [trade-record-one-len] of self length [trade-record-one] of self
3 ?7 z" y0 ~/ q! p; D4 V

1 J: K. O" ]' X: y3 ]+ I/ uset trade-record-current( list (timer) (random money-upper-limit))

% d8 G, n) T8 N, }1 Z5 h( b0 `. u5 H1 G! W' p% F; w
ask self [do-trust], c, @1 S2 N; e9 b* H4 {& x
;;
先求ij的信任度
' T" L$ \1 i6 D7 p# y
' _0 K; [# ^* s! S4 N1 lif ([trust-ok] of self)
+ I- L8 Q4 S; O8 \% V3 @, @0 C* ?;;
根据ij的信任度来决定是否与j进行交易[
+ Z* w, `: N. S2 ]) Dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 r9 e% Z6 C( r
3 H3 S  `# y5 `3 R3 M  Y) Y) ?5 }
[
8 \9 z) m& P7 L! c+ F0 T- i( K
0 N6 G3 @+ q* P( L" w
do-trade
3 r, B9 @. u) I. J+ H4 H1 ^
% z5 p2 x5 S; c; U6 z
update-credibility-ijl
& J* k) c/ a/ A- j
+ N9 n7 ~( M7 P" ?0 M
update-credibility-list
% ^. Z% s& _! L6 T' |' K

- y3 M4 T0 e$ Z- k4 M7 ^
9 w) u5 W0 s3 ^" Wupdate-global-reputation-list
, Z5 V7 F4 w! j* A' j: z
' v: ?/ n. F6 u0 u- v0 O( J( ^
poll-class

/ ]5 U, n2 z9 o: T
' F! _* a, p# u0 }3 i+ Gget-color
' y* w( i0 B; ?2 r, E% p. l9 ?! d
& K% e6 B8 V) n0 m& W$ O
]]3 _3 o: u2 N4 j4 s9 H( V& `
9 ?/ m& _+ U/ V7 m& s' X5 J
;;
如果所得的信任度满足条件,则进行交易
% \7 [2 B5 `% Z$ r- J- J, Q/ p! R
[
- w/ `. V: B" M+ n% t0 Z' n
% l; {; |# c0 }1 j9 t
rt random 360

( ?% r( i2 a; s" G& w2 Z9 N/ x3 M: \9 _# w/ R2 x& b8 S
fd 1
9 E1 o8 o% b+ H* h7 }* y7 t' Z  _
/ i9 ~3 d& N/ o: M/ w0 J% W
]
  o* O" _2 T5 k

: n# m3 `% R" ]$ p6 Y5 ~2 Lend
  K) w' }& m9 j

) r( V6 E4 q  w; M4 ?% Bto do-trust ; X6 N+ }; L( F0 H( Y: A/ v
set trust-ok False
1 ]/ h1 G- D, w) i7 o8 I
- l$ Z  `" x' y/ ~9 W. U/ S& E) |
  [4 I3 N/ |. h- r
let max-trade-times 02 `3 z: s+ g! x$ n) r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 i: E  ~( r$ g/ @5 g9 t
let max-trade-money 00 F7 \8 L- |) ]  _
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ I9 y& F9 w* d6 I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" _4 o9 q9 q, V6 o

( b1 T9 o- _6 L* S
1 B: j5 z5 B. C4 I
get-global-proportion
0 n- {$ J+ n/ x+ Ilet trust-value1 L) f% }% |; k3 {# ]; I6 s/ 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)
+ w0 @% L( E/ p5 @, A# A. n, P8 w& B
if(trust-value > trade-trust-value)
+ q0 x( ]- x: G4 Q) E! S$ M[set trust-ok true]
9 ?7 [6 E5 |, X5 Gend0 Q4 }3 K$ R' J; }) V2 o! B$ V

4 h$ y* a6 N: I: @5 wto get-global-proportion* D9 E. t1 C" j* `  s8 t' J; v! H$ R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" \  s0 Q( f% r' Z3 l. g[set global-proportion 0]. @- v  m8 M/ [
[let i 00 ~5 I6 `6 r6 J+ d
let sum-money 04 d) ]2 \$ c; |/ H: E9 m
while[ i < people]
+ q: L5 F; e/ v6 \[
6 y3 U( _1 k; g* {+ i- f- @if( length (item i2 H7 Q, d2 n$ i# i8 @) V- I
[trade-record-all] of customer) > 3 )
$ E( b0 [! f8 j6 n" c. u
[& U8 r9 o9 R  t8 r. q( i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* R* C- s( H) _. E]. X# H# V( l, H
]; W# X0 k" W( x/ G' Z) y& [' }8 Z
let j 0
/ @# c# |, a! l  t& E$ Qlet note 01 H4 r- a9 \. `
while[ j < people]$ L# C+ x* W' k
[
0 L: G; D- d8 U+ y% m1 [if( length (item i1 \4 R& H- }/ P2 n
[trade-record-all] of customer) > 3 )
/ h- [" R, i8 A+ K$ B
[
$ K) K+ @& Y# P7 F$ L3 Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, C: v* Z& U1 X( J' c[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* g' h4 i9 [. r% ?6 t[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, @+ X5 w& ?2 \3 q; y4 r" s]; c% S4 Q% u% X' s* ^+ m# _
]
* p3 O  q5 `: H8 B8 eset global-proportion note6 I, T( H1 f$ C
]
: u/ o; G9 x- J; Mend, z3 D# @4 _* v+ N( k$ M8 v) W. z9 b

- @; h/ U. g. B. qto do-trade
5 Y* x4 \, O# f/ t;;
这个过程实际上是给双方作出评价的过程
  x( [! j, S, D  Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ [9 m+ d# P- C# }! |# Q! j: _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 a3 r  o4 Q# P" W7 m" }, _! s
set trade-record-current lput(timer) trade-record-current
4 h1 z1 w4 P) W0 _4 j! Z, s;;
评价时间  T  B  R- {" v- l( n1 Z
ask myself [4 ]: p" y+ `, {
update-local-reputation0 w4 _4 Q2 Y7 A5 ?( J+ ~& t
set trade-record-current lput([local-reputation] of myself) trade-record-current; }; L4 m" b3 a1 H2 ?5 N
]& e; Z: v3 T/ a8 D7 S$ K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, ^9 c! b5 ~7 j( R;;
将此次交易的记录加入到trade-record-one* _& `! g4 s* D+ f4 w- m+ @, q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 E9 W6 S( l  G: p' K
let note (item 2 trade-record-current )
4 [6 u% a- }% w  cset trade-record-current
9 G* a0 {( @6 U& N& a- `(replace-item 2 trade-record-current (item 3 trade-record-current))

. w  M! M, Y8 Q% `set trade-record-current
: B5 f) E! H& J6 V2 v(replace-item 3 trade-record-current note)
) b  Y7 ~, C$ o$ F) T
' {) N$ k; y6 b0 z

9 v) ^$ p2 o! S* v2 Jask customer [
; j& q/ l' V9 G% @. q+ f/ b. hupdate-local-reputation6 X- M- _/ n% H2 M
set trade-record-current7 E: b- K4 d$ [( N+ r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 W( p4 e8 d. d. S; a]6 Y# t. u6 I6 n/ c( x

7 }" C! A$ y# U# J
% |8 w4 [# O* G7 M& ~7 O( B7 k
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 }) s0 U, H! E$ S  B# _

% g' x) z- A7 q3 cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 ^" Q$ C0 |4 n;;
将此次交易的记录加入到customertrade-record-all
6 K( f  P+ m) U, j2 Q# B2 a- @end& {( T# ]/ g8 y: _, c. x: n6 C8 u  g
0 z2 q: W; |* O7 k9 i/ S
to update-local-reputation
3 {% D3 Y( Y1 D6 Y1 ?$ Xset [trade-record-one-len] of myself length [trade-record-one] of myself3 i% z8 b6 f* H. x# u
8 z; p% K( ]! H0 q& m8 ?3 S& j2 n/ T

$ U1 z$ [* D7 K$ Q& d' ^* H, a;;if [trade-record-one-len] of myself > 3
" Q4 r4 s7 I$ n
update-neighbor-total0 L: H# v1 L! J( U6 \9 _. ~
;;
更新邻居节点的数目,在此进行) g+ `& t8 g) Z+ {$ v
let i 3
2 u; G" g% k, ?let sum-time 0$ L. O8 Z. M. c9 |' m; M0 q: f
while[i < [trade-record-one-len] of myself]
5 W5 s$ P; Y) u" e* @: E: l[
: ^& q1 m( b1 g2 e* ]9 Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 b! m5 o7 t( |( f
set i, u8 z# O! |5 L7 |% ], c
( i + 1)

+ O) w. M* z* W  f$ C; ~8 \* N; V]
1 t1 ~4 S" E0 v' f7 s) |let j 3% M& N* F. e" P7 M9 I7 ?. k. z
let sum-money 0
6 \9 U1 B" i. ywhile[j < [trade-record-one-len] of myself]: [1 d. I4 e; `" g/ ~  F8 C
[  V" t& Z% w) d/ Q
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' ]8 A, W9 f$ x8 y
set j
$ J, u! H& \* S# i" o: k5 V. B( j + 1)

/ v  D0 @1 q2 g8 f]
1 J0 b$ U5 v% y) N: g  wlet k 3
$ B5 K. }" Z- v' c" Z* Y8 W1 Llet power 07 `( q. i/ f+ ~% }0 `. s( _
let local 07 i. P3 y; m- ^. y
while [k <[trade-record-one-len] of myself]. B) y" f4 |2 f: l
[
7 }+ w( I' |8 X2 ?9 `1 W  fset 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) # k) Y/ o, B6 e2 Z6 `" Y2 L7 D
set k (k + 1)- w  M7 z. G4 z4 P" `5 T
]
1 F9 ~# `2 D# Z8 _set [local-reputation] of myself (local)# K" |) Y  Y4 E& ], |2 |# s
end
6 n) N. b$ _8 R$ e  x- G/ z
0 V+ Z' i- n! m/ Ito update-neighbor-total
# q, r. X, g) b1 F! t
, {7 X: }( B& g. y1 F8 tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- d! H0 T4 ?4 B$ U

! k" t! ]: D1 u

9 [. |( x5 ?! O$ J) v7 vend
2 w, V9 ?2 y: u; M# i( `# S8 U* T2 ^0 ^: G+ i, f6 C. p
to update-credibility-ijl " e5 ?  Y& @8 t8 {6 s

! N% U# ]: N# A" o8 O" B;;
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。$ K0 t+ K5 B& F  }* c6 ]
let l 0
5 c- H$ v% U5 {) ]( e0 U. F  V; uwhile[ l < people ]
2 v, X9 }: j) r;;
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 }2 j  A& o  E% E
[
' N' N+ }; r& E1 R$ \$ blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ o5 E- T) F  j. M. p6 O0 f* m2 aif (trade-record-one-j-l-len > 3)) d3 q0 N- d: T$ t" v# N/ h
[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
# w- q1 g: @  e5 k0 Q6 V% Ulet i 3
& w, M1 c: l. nlet sum-time 0$ U: b" _* I( x5 N6 ]4 Q- Q
while[i < trade-record-one-len]" @% x& d5 Q* k5 p& D4 S( F
[
2 t" v' \6 c7 F( Z) T3 Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  z8 |- ]$ P: G" F) T8 nset i
" e. o$ F- s- x; K( k, N( i + 1)
" a) R" j8 \. I; ~5 ?
]
2 w$ y- M8 }4 U+ f& Vlet credibility-i-j-l 0: [0 {2 U0 ]8 X" T9 \1 Q
;;i
评价(jjl的评价): Q) b1 [. j* G5 S! P2 h  R; p
let j 3, E5 {$ K( E- k2 R3 L4 N) R1 h; A
let k 4
, n+ u6 V7 W: v, q! K' gwhile[j < trade-record-one-len]! x# z; S+ x# `: X
[
9 D; e$ y& g( p6 u& p: U: y' 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  y7 x" b6 Y: X
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)" I9 k9 y4 B- B) L' H( _2 M
set j
; A0 A% ]% _/ e$ J7 C- d( j + 1)

* ^3 n1 r  i6 F7 z# I, T/ X0 @]
) Q4 t% ?0 Y8 C1 q9 E' x4 Nset [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 m4 _+ j% A+ Z

+ N. J& L! I  v/ a9 K7 m
0 j  V' @$ Q% n7 M, ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ b. l0 z! G5 D- X* Y
;;
及时更新il的评价质量的评价7 Z- T' f. n- v" ?* D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% q" n" |" Z2 f3 r. H1 Y
set l (l + 1)
6 I/ e+ l0 I1 W& R]
7 |0 U2 {. `$ p1 D$ J. Yend
2 u0 }3 J4 f& N6 w+ X
: b! q5 b  p% x! uto update-credibility-list2 c: y( b8 a1 e7 Q5 D- Z3 U2 N! G
let i 05 N/ a9 m# y- M  G2 [3 R3 v$ C
while[i < people]
$ e6 J& K( z5 a3 L[* _6 p- |$ I' o! `2 t4 o
let j 0
: y7 w6 w( V+ W: W9 flet note 0
& b) U& J% m& l: F  z# elet k 0& j! l$ M3 x9 t# U5 m
;;
计作出过评价的邻居节点的数目
# T9 W' |3 ?% ~2 Bwhile[j < people]
; o* ^2 Y/ |5 M0 |: u! |[
3 G8 z! L2 ^: C" p  Y* q* L; ~if (item j( [credibility] of turtle (i + 1)) != -1)4 D( y8 _" I1 z3 J
;;
判断是否给本turtle的评价质量做出过评价的节点
" h' j9 @$ @# M5 ]7 M5 ?! f7 s[set note (note + item j ([credibility]of turtle (i + 1)))
/ t; b* w% a2 N$ i7 E" x' g$ q2 [;;*(exp (-(people - 2)))/(people - 2))]

, ?, B; I6 e9 d( l, v* ^  d$ F* _( aset k (k + 1)
. B8 [1 l3 m! Z* L]
/ G7 y, P% E2 }7 W5 K; l. uset j (j + 1)* o! F# j! ]0 c. k; N
]9 M- S6 L% Q& m' D# s
set note (note *(exp (- (1 / k)))/ k)9 q( C2 H$ @  C; Z8 B
set credibility-list (replace-item i credibility-list note)* E' ^4 I' Q4 j
set i (i + 1)+ p& s& n; I0 A6 `* {
]
$ }7 W$ V, ?  c: P5 ~+ S6 C/ h7 iend; s% P# T* J: E' _& u/ p

4 W, Y+ ]/ \, O% zto update-global-reputation-list$ c3 J2 Y  B  Q8 z8 b
let j 0
! k1 \# S2 f8 G0 m* xwhile[j < people]
! c1 S7 e' `3 i6 X; g[) ^( K, ~& D' o. M8 n. t
let new 0* ?! g  Q4 c7 j( z8 e% d" u
;;
暂存新的一个全局声誉
& P0 X8 {1 }, ^: L, V* @let i 00 n/ _0 C3 d, k3 e
let sum-money 06 M6 Z3 I. z+ \6 d% ]
let credibility-money 0
* n* G2 u& [  J; Y( K( Xwhile [i < people]4 z8 J) q0 e9 u+ b" ]3 l+ T
[9 E" P1 B# G# H& z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- C0 j5 T5 F, g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ y* U% `+ g! W. T8 B* {
set i (i + 1)
7 Y) x7 v' V6 h3 {1 {]2 q  c8 Q4 d& O5 ?
let k 0
: M  I& j, q% m+ ~let new1 0
2 A3 S4 @, m/ u4 E# Xwhile [k < people]
5 q4 K& \* |3 G0 ?5 ?[  k6 P7 G# s! m3 N, V5 T
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). x) _0 n# v: b( |' R- N4 z
set k (k + 1)
9 L: r! Q3 t) y* ?8 d]
1 n) \" N" l5 Y! c2 m3 ?( b/ {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 I6 N; D5 i# ?, W1 Bset global-reputation-list (replace-item j global-reputation-list new)$ p  v- I. }/ D  ~, b
set j (j + 1)& E& g  d. c6 v' J. i% y3 ]. {
]8 \8 L% D/ R: C2 n/ A% t3 k
end, h2 I9 C" e' x% |' l1 r" g+ ?7 @

# E9 N/ h% W* M, r. ?9 j; F1 a/ I1 p8 t; d; z/ h

2 ^- ?! f0 G% E& F) h0 [to get-color
4 v2 y' C& Y) P2 \& R1 f
# P! [1 t+ i4 J! N# ?. Wset color blue

* N$ v8 M% ^' V3 n) P5 Oend' i1 [& z( d/ e: V; J/ T
2 G+ T. L- v1 q3 a( C
to poll-class
% V3 S6 H# n$ |. ]end
5 {! \/ |, I  Z
9 h4 }: ~1 G% |- C* k. h6 ?) D0 cto setup-plot1
* [: Z6 s0 h( K
& Q1 i1 y4 h1 t' S/ ]% k: uset-current-plot "Trends-of-Local-reputation"

( _1 z8 C" \5 D) p  _# k3 n+ j; y: D
- \; `4 Y, g. x/ `set-plot-x-range 0 xmax

$ R& p/ S, ~& j  y6 S; N. g6 C+ D* x6 o
set-plot-y-range 0.0 ymax

( p  [. C' {1 ^( @6 a8 q  Aend
% J; l$ @% `- r6 J. f
3 u' o' w4 Z& P+ Tto setup-plot2
( o* U* P) M. V/ \- u& I3 ~
9 z6 F# K* b! V  \set-current-plot "Trends-of-global-reputation"

; n5 I' H6 T0 k( x7 k: r( S( B3 ]. N% C/ C, F# |7 y/ a) m% A
set-plot-x-range 0 xmax

0 I. W7 I  \4 X" T& G
# Y+ ]9 i$ }, |  d/ v2 a! Qset-plot-y-range 0.0 ymax
$ Q% f: T) \! c+ J+ J, g7 w# x, C
end4 t$ g% y$ f9 d8 E5 A

" n" p2 a4 h* |& nto setup-plot3
# {" C! C% r. [+ i
8 \8 g$ X$ V$ \3 V" [5 aset-current-plot "Trends-of-credibility"
0 Z+ \( K" {2 H7 m) s

+ |1 Q% M9 M6 O) p) Y# hset-plot-x-range 0 xmax
! }* e" Z( I4 g' e% t0 r  n

6 X2 ], }& \4 q4 i0 fset-plot-y-range 0.0 ymax

& s6 {% M) b) c" e% }, Y: Q2 Kend" U: {6 Q+ _  Z$ R7 y# {

0 y! a8 @- }- n$ p& `- H" j1 H* p: Fto do-plots
/ u1 e. M5 N. m$ A6 Wset-current-plot "Trends-of-Local-reputation"* L5 x4 w+ n, m; V/ f3 v5 [/ R
set-current-plot-pen "Honest service"
; w. G9 ?3 n; U* P* j7 X! Aend
# n" v2 J* A) L" u, h
( [1 c# d6 ?% p6 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." ]& O$ L, v; ]% o4 |, P
% C8 O0 z* ~3 N! u
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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