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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:" c" g' U6 v7 h
to do-business
+ ^3 `& Q+ |+ p; Q! I( o% d2 y rt random 360& U, c( h. R/ P8 q2 b
fd 18 z% {! w& w" N/ J1 @
ifelse(other turtles-here != nobody)[
) [" G2 m7 I4 j6 Z! S  L0 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.
* s( i; ~7 o6 w7 Z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 C1 M( |' d: E% B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 B) ]  y( ]6 _   set [trade-record-one-len] of self length [trade-record-one] of self  s9 j* G: w: G/ T& V3 S: r7 W" _
   set trade-record-current( list (timer) (random money-upper-limit))
  @. q* L6 p; ~0 x( c( O, H" y7 r0 ?* x( x. |4 U" k4 e
问题的提示如下:
! A  E5 [: @$ M$ u( I! A# c4 Z( u) |, }! U) O" E
error while turtle 50 running OF in procedure DO-BUSINESS8 P' J0 O: g8 |' C) W
  called by procedure GO
, S2 A' x; ^% Z0 b9 `, f. QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
# j0 w8 y$ u& O( W6 R
(halted running of go)! D7 W, t" i. H" _1 U
$ a1 S# d4 D& U. G7 ], M/ Q3 f
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~~
2 n- f, {, i, ]/ `2 ?* U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- E6 X4 n2 \4 S+ a# ~
globals[$ z& F. D( d/ ?! X3 c$ Q8 P7 T1 I5 n1 e
xmax4 f& b9 g  p; v9 x6 G
ymax
. B: z+ F1 a$ X/ aglobal-reputation-list1 T3 m7 e0 {/ V2 Y5 S! w4 V4 y
& m# U: x/ N: H" k3 Y
;;
每一个turtle的全局声誉都存在此LIST5 k0 Y( T* t1 e
credibility-list
" u# X; f+ R7 H" D;;
每一个turtle的评价可信度1 b+ j( p' y% z5 l$ v
honest-service: z) P: F6 |: R9 S
unhonest-service
  g6 W. O5 e" Foscillation5 h6 ?) \# |- S" k; Q& s! A9 b. P* A
rand-dynamic
3 N8 V: ^0 R' `]
& F% N& @5 V8 x' X- w, U' n
9 ?$ x/ d! F. d- Xturtles-own[
8 J, }$ ^' T3 ~- S0 l6 [trade-record-all8 Y3 s4 N  R1 H
;;a list of lists,
trade-record-one组成
! C; p" p: N4 p; C5 }; s2 Strade-record-one
5 w! K3 Y2 c$ 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
8 E- E' I7 N4 C3 J8 K3 A$ S9 \, s( R1 a. y) Z" o  g
;;[
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]]
+ z# [- F5 v# A/ R/ Ytrade-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]& m9 }0 ?9 k$ y( X; [; @
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: Z2 n& n- h) H2 V. B
neighbor-total
3 N; p0 c+ \( b8 n' n( \' D, m;;
记录该turtle的邻居节点的数目
% h2 f( [& C, h4 f# W+ }trade-time
% B. D5 t/ }- b% L  M;;
当前发生交易的turtle的交易时间' M" e0 d2 G, O
appraise-give
: E- C$ y3 }. d: a$ a6 [9 o' f;;
当前发生交易时给出的评价; O7 J! d( z' s. e3 J9 e9 x
appraise-receive
/ J+ N7 h  C0 Y* p. C9 {! j% H;;
当前发生交易时收到的评价
7 f4 W* E7 J1 I- e# x; t( Happraise-time8 z5 n& X9 r- c: u; ?! G  U$ [
;;
当前发生交易时的评价时间9 L3 t+ j3 B/ H, q+ _
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' \2 ?  [4 c9 r' N4 Strade-times-total. v2 B6 Q6 m2 ?0 u5 R8 j9 w
;;
与当前turtle的交易总次数
, p4 @# |, w8 d! ftrade-money-total  k2 C5 e) \4 D/ r
;;
与当前turtle的交易总金额1 v2 u1 @$ _" R
local-reputation
4 ~  p/ r& P; O. `global-reputation0 ~+ ^' C* c% c: ^: Q, R0 g
credibility& y! [+ N, h" V
;;
评价可信度,每次交易后都需要更新
% G5 {* T+ z% T/ D" ycredibility-all
5 b, z( Y2 Q4 i2 |& ?- f9 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2 u" d) J; n; b. P" i

- G* t. f6 f! A# o6 w3 P; R. E5 z;;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( [8 [+ d  c$ ^. S6 W6 c
credibility-one
% g5 P6 f! p& Z8 o3 _7 U; h4 O;;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 J' V7 Z, D4 k1 v) R
global-proportion( k7 B3 V9 w6 P
customer$ @0 ^5 l: Z5 s( j# _+ f
customer-no2 t* R: w3 S0 h# w6 R; g
trust-ok
0 n& P0 Y& g1 N! I, Y7 s0 t- H- s. {trade-record-one-len;;trade-record-one的长度
( t' s# o$ G1 `# X0 y; g]
, R. L2 K! \* x9 d4 X8 N, [" z
. P7 s+ o* G, b( H1 x;;setup procedure/ n. S- N# t, r  ^

) Z- b6 @7 H4 Cto setup
' ^0 \7 A6 {! W, a+ Q) R5 X) l. ^* _$ y  y2 C
ca
& \9 p) ]% L8 A( e
& S; R& Q1 a6 `4 b+ w9 a3 h
initialize-settings
6 \. {+ x4 y) R: g0 n
2 a! f. C) C, {6 q9 U6 s! I
crt people [setup-turtles]

9 x3 u* X  R9 g8 C6 j; e3 n, [' y8 h) N7 N
reset-timer

5 K. v" {) V6 Z# W& f$ V1 `7 q. _8 E2 R# w3 @* R) `
poll-class

( z, w9 Z5 E% t' m! P2 d/ {& R9 _  K4 @
setup-plots

7 p) h2 W  @  h: _4 {0 U3 ^, I* x  z# \1 l. }1 L2 _
do-plots

& W  k7 K' V# X' ~' H3 U# Oend0 f3 y! ^; Q) F5 r. ]

: J! `6 w& \: c7 x5 g( yto initialize-settings6 a6 s* N4 u0 X$ i9 c

& o. N% p: R/ K" G2 P' p" sset global-reputation-list []

' b& i6 s+ _8 Y; d5 h
0 w. _2 _. w3 Rset credibility-list n-values people [0.5]

7 b( [3 ?2 c- Y" m* g& N1 N2 p  J' L$ y
. R! V2 B, `, b  h0 t. `6 Yset honest-service 0
( f! I3 x& T3 O$ Y% j2 Q9 G
; M) f8 H' Z2 c# o& {/ ?9 y2 o
set unhonest-service 0
! S1 i( t8 R; r) Y) x

* x) Z2 X- \) D- D, h* ]! l/ uset oscillation 0
  F% _2 w/ }3 i3 v8 u$ l2 J* Q
8 C( e/ N# e) u( o5 h
set rand-dynamic 0

4 [& T, {' s3 p; X1 wend' D% ]1 n& q& f! O7 ]$ s

- L' T1 C  `( W6 S, L+ p$ x+ o" `to setup-turtles + y. D: }1 `+ Q2 N: L3 k' W# `
set shape "person"$ B( H) u' ]: I1 I( a
setxy random-xcor random-ycor
% E/ @1 G# T% O( g1 [+ m! fset trade-record-one []6 E% {6 C5 s& S# \# A) t2 M

/ Q; \9 q+ J7 e+ ~set trade-record-all n-values people [(list (? + 1) 0 0)]
# k! ]& V% x, O3 \! ~" W

2 I$ n1 Z2 {+ E& P  [. Eset trade-record-current []+ Z8 J5 r; }" Z
set credibility-receive []
, Y0 v7 ?7 b* f; P2 V1 Rset local-reputation 0.5
* Q  g. q: b0 `4 i' e/ _; aset neighbor-total 0
3 Z' g. ^$ m# v; f6 M  ?# X0 u6 tset trade-times-total 02 h) q3 n8 [5 T' W' u5 f
set trade-money-total 04 g, F1 I& s4 x6 \3 @, ~* d
set customer nobody) J: j- W5 n' O6 t3 y0 m! M" U
set credibility-all n-values people [creat-credibility]* Q2 s  f; R0 f2 J
set credibility n-values people [-1]
5 ?' [( C9 J: w5 e# U2 y& R) yget-color
, Y% g2 _9 x* x
6 J4 @8 @: M: }" z% c' f6 m
end% L7 Q: s$ ]' _4 l& S

) U6 G1 ^0 [  }to-report creat-credibility
1 m+ ~9 o6 Z+ Mreport n-values people [0.5]
, q& [% }$ V+ Tend
& p, S( J' |, m
& h' F% W' o9 b3 ^; O: ~2 y7 }to setup-plots
- p  _9 E% q. T. |2 x, _
3 P% ^% w# D2 p/ ?8 `) `9 d  O  V% yset xmax 30
$ Q2 n; i- h8 E1 e/ l

. X) f: ?' c' K) `2 r3 o$ hset ymax 1.0

4 I7 S& J0 ^& _4 O! R+ q& _# V% d# E8 z8 b$ ^/ J
clear-all-plots

) D8 O* }6 E9 ]3 v2 B8 J( V: Y- b: V; a. C5 c7 I
setup-plot1

( r+ ]% V! B7 \/ E7 I8 R% B0 i, z" D
7 R' x5 J& `9 Z, ~7 N$ w" Esetup-plot2

5 H( y- U% ]' J( m: R9 z5 K  \7 O# P$ i% S. u
setup-plot3
3 t# _: l* ]  Q' x* V( `5 G
end
2 x5 V# A, m6 ], Q4 U' o4 Y8 {5 w% G- t5 o" B4 o
;;run time procedures
: U9 e1 y3 z' I7 E1 q2 ?' ~' D8 H- j, `/ }% D7 F
to go8 O4 L2 m& z+ C0 g1 p

- w5 w  o8 ^% l9 g5 x: yask turtles [do-business]

; x8 I/ N- f* p; Y) g* Gend
/ t' |$ F. a8 }! {: O% \) V2 d0 f) e) \* [5 ?. b# @" D% C8 s
to do-business 3 W2 P2 y6 s( K( r( u5 W& j

+ y' U* I7 J( {* Q# T) m4 P
( A4 d# Q6 [4 ?/ ?- Grt random 360
1 [2 v& Q; I8 H0 V& p0 _( g

; b/ o  z* w2 [0 K7 X: O1 gfd 1
6 `& C0 p, C1 Q) t- q) u1 U

& T- S5 O$ h' t- b. Fifelse(other turtles-here != nobody)[

  T' S  n$ c8 _+ T( I/ N
7 F% G* [0 q" e7 n( [set customer one-of other turtles-here
3 l/ E+ Q0 O9 g6 O. Y) G' m
3 @2 Z) i: K. L2 X5 n
;; set [customer] of customer myself

4 {1 ?. T7 r! r$ t, N% R; L
$ [- h. u2 \& Z  `  V% Lset [trade-record-one] of self item (([who] of customer) - 1)9 \+ Q) d* ~  i# Y0 w
[trade-record-all]of self( l  W7 y( z" O' O! d2 B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 V- C, i1 M2 B/ p* @

+ I( P- L. [( m& }& lset [trade-record-one] of customer item (([who] of self) - 1)
- B8 w% c: V" |; c& J[trade-record-all]of customer
' ], r3 g8 ]) }9 G# I. }7 y# C
4 z( l8 q6 t1 ^5 {
set [trade-record-one-len] of self length [trade-record-one] of self
" e+ ]& G( S4 ?4 ?8 x
5 q! K  C; c. _, V
set trade-record-current( list (timer) (random money-upper-limit))

% Z7 V3 \# E8 l; _4 f
+ ]- V6 e: g4 ~9 M- {ask self [do-trust]
6 P$ F, |2 ~; P- Q( ^' S;;
先求ij的信任度
. {+ m3 L2 G2 D& {
' _4 o! M' H0 Eif ([trust-ok] of self)
1 ?" Q% b3 Y. `/ c: W1 M/ d# p8 g;;
根据ij的信任度来决定是否与j进行交易[$ M5 g0 h: r) c1 A. x
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 z2 X% u# _8 t
2 X- y" W; y% g5 i) {' L
[

8 \5 R2 M' E; F0 H+ P
2 c& Y* z& A8 v9 t1 Ddo-trade
% [3 q3 V1 @$ s5 Z9 a

5 ^: M3 R" h/ J- L& u& Rupdate-credibility-ijl
0 p2 Y# r# g, n1 \0 s, v$ h
9 @- I9 a% W/ s1 x( h# o7 G
update-credibility-list  K2 n# r% y! d% H4 T: I
8 a4 a/ Q; N" x: a

7 W( @" b3 M* i# a* n- Dupdate-global-reputation-list

4 i6 x- E' m" K1 [9 B
  |4 f4 D! T; l: d2 d: B+ M5 h7 ~poll-class

$ v+ ]/ {9 j  x0 F0 r9 @# Y3 B' w- F+ s7 ]3 Z
get-color
+ ]* y* f8 e* U, k- [/ Z9 ?

8 Z- ]) o# N" l" o: d3 b]]
6 Y  {9 B/ r& P3 E5 E, E6 z- e6 u# b- O& i3 T
;;
如果所得的信任度满足条件,则进行交易& S3 a+ |% t! [" b: W$ F  K; [

$ ~+ [$ |* a1 W, r  E- ]' I[
% I7 F6 Z6 o! |% {+ K+ m% c
. p0 b* R) s& {3 e3 }4 [4 v
rt random 360
3 ?% L9 s: P* e! T" E

0 Q  _. `- v7 N- Pfd 1

  Q5 d6 {" I) z* D( k; b
, D7 V% b/ K4 ?]
* V0 O4 a0 }* Y. R& k

5 P& ]6 p, d) l! d. O' uend

- r, M" c" Z3 \" _  t$ `3 Z# H, i/ s( n0 k2 [
to do-trust
" `0 T( n! \0 F( T. H3 Vset trust-ok False
$ v+ E3 w0 N2 V4 K6 o
; N. q  i6 V$ P

5 p# ^5 X1 Z5 v: C# M  j! O& |let max-trade-times 0
& Q" K2 d8 w# U8 y9 `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ q4 E# K8 g: S5 Z' rlet max-trade-money 0
/ i3 p! Q+ Z/ u& L# V: rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 Q. \& Q: m+ \$ f- i% [$ A
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), N/ @- {" t- A) X% o/ ~4 [4 C

& m& a- I4 V" c! b. q6 T+ L9 A( L7 }

3 Q7 b7 D6 c) T$ |7 b: ?! o6 j/ cget-global-proportion
0 m4 a* I2 Y& olet trust-value) u6 I- |8 \6 ~8 |
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)

; D6 @( h8 E! xif(trust-value > trade-trust-value)! Q! a* W7 U5 ]" N/ x, W6 S
[set trust-ok true]
% e6 `$ g8 Y' ?* send! l% D- S6 m6 d6 \( L
1 N) F* k# X3 r5 i/ Z+ G1 [
to get-global-proportion
, r# f: C6 Q6 B) \2 bifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ V$ B# [& U. n3 r9 x/ ]
[set global-proportion 0]
4 C# v/ K' e5 s2 `[let i 0
) |) g: S( f) E: c4 T/ ~2 elet sum-money 0: c8 i2 p3 A, v4 @3 _! m
while[ i < people]2 {9 `2 X) ~3 @: p6 ]
[
3 d, Q5 ~. R7 x! Q& l' I% G+ x# pif( length (item i1 o' e; a0 u9 L( u
[trade-record-all] of customer) > 3 )
0 Z* \$ E; L& e6 g7 ^" p
[
) Y, N' g8 r$ ^& q% S" |) P# Bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ h2 V1 J8 O4 k( g( G: w. P0 P) a]
: s+ x. R8 m, r9 V2 P]) w7 X2 N& t0 z1 Y% `( s( H1 e
let j 07 {( j) w* U* Z. L* X& n
let note 0
, M/ q$ i8 G( I) a+ B4 \9 Zwhile[ j < people]
0 L# V0 J/ A+ s! h[
0 p$ }& `/ h) I" pif( length (item i: d& _- t. ^; d
[trade-record-all] of customer) > 3 )
/ @& o) x4 M/ c+ h1 \1 H
[% @  d# Q8 v5 F. h, h* y: M9 L
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ B( D- Z  e+ q2 z. X. t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; ^- V! v/ d3 {' s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 \+ H! x) ~0 \# L* i" o7 e6 S9 Y
]
# f2 s0 B, h: T$ {2 G6 E]7 ?% h+ N4 g! y4 w% C+ I
set global-proportion note
  _9 h" i! S' F- f, ?]/ [0 R9 x7 r! d# i' E
end4 U! [6 E: \7 G' y

' K" M9 k# l% h; C  U6 x! mto do-trade- Q, d; i9 u( O5 |4 X* ]/ ^7 @0 z& q
;;
这个过程实际上是给双方作出评价的过程1 _4 f5 J$ K: F8 {5 z1 U! J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 V4 |8 i) `- ~( @, a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* E- J( D% c( G" k: U/ k6 F& y
set trade-record-current lput(timer) trade-record-current
) B/ p2 |) L# L2 W6 ?$ H/ M;;
评价时间# }: X, E3 }4 a4 R. _" B
ask myself [' y( n8 M& H8 O1 G
update-local-reputation
- }$ X9 I( M0 X7 ~9 {set trade-record-current lput([local-reputation] of myself) trade-record-current. x1 j! W' _; m7 s( |! Y
]
( U- i/ C. r9 p" N1 C/ gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ t$ O) R: @/ c+ G5 G. n;;
将此次交易的记录加入到trade-record-one
% m4 `6 D6 f* R* `3 Uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* e& q0 l9 I! R7 C  V
let note (item 2 trade-record-current )( N( o  L( T- {* H. _# R/ G
set trade-record-current
" U! e  ?0 ~. p(replace-item 2 trade-record-current (item 3 trade-record-current))

& ?3 q% G1 }. L4 M% H" wset trade-record-current
) `# _3 N+ C$ O, R( e' e& P) Q) e(replace-item 3 trade-record-current note)
: `# f$ t* r: M$ u( |8 v2 o, q9 Q) J+ D7 s
8 @( ~( A! e$ N- B6 X
ask customer [
- Y; h, q1 H9 U( wupdate-local-reputation4 V) j3 |$ R4 W3 i; H5 k! z. ?
set trade-record-current; r2 R. w& k0 j3 Q: t
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, h) y+ F- e" \( {' ]' Y]
& Z. Q5 N) L" a2 q, l3 t1 f! `8 j9 s8 R: p" v
) j( q0 A( L/ o1 P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% ?% N+ f$ |4 Q. U* f, w
) M2 ^5 ^  X' {- {
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 n6 Y+ L' ~* V6 O) _& b/ b9 \;;
将此次交易的记录加入到customertrade-record-all, H7 Q) r' n4 ]
end2 o6 S* b+ v2 t  W; l8 e, g6 W
, b$ y% `9 f; Q: w7 _8 h
to update-local-reputation
' `# L1 w% x( `& f7 Iset [trade-record-one-len] of myself length [trade-record-one] of myself
8 q$ ~& x( z# O/ G; N: F+ m" o9 {! ]; d' Q! a' h

# t4 U6 \+ G  d9 ~6 S3 `0 p;;if [trade-record-one-len] of myself > 3
; ?4 v& p5 A% z( O- r" }. h
update-neighbor-total( {! {  f" l9 \: ]; d. H
;;
更新邻居节点的数目,在此进行
4 g9 C+ u+ \9 M) q0 R' Q+ l  clet i 3% Y6 k' t$ j0 ?. X+ @# R0 n& V
let sum-time 0  d: G5 e" Z" h
while[i < [trade-record-one-len] of myself]
% N/ v7 V( m4 m4 W. {/ E' q7 N- r[% c9 z5 u0 T3 C# l! S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 T6 L& O: W, e, D9 |$ bset i! [) f8 b  s# b: B/ f3 t
( i + 1)
/ V6 a  e# U* a, P+ |# x8 }7 c
]; @8 c; U- W' W/ z1 P) f2 _
let j 3/ @" v* _( a5 ?: X4 A1 a
let sum-money 0
- u! F( j0 ?8 _' U4 e5 ywhile[j < [trade-record-one-len] of myself]% C6 }1 O6 j# a9 {
[
2 h! G& a. |8 \. h$ i# |: j7 qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( f7 V: O& \& o! [; j
set j
& D! d& \1 z7 R2 ^# A% T( j + 1)
( X: C5 Q: [  A! _& c" M( S" Q: O
]/ ]5 p: U1 N! o- ?2 }, e  o
let k 33 [. Q% \' }9 g# r1 j. ^$ V! P
let power 03 s9 X/ v! G8 U; p
let local 0+ t$ }6 Y& I  Y, p* _/ ?
while [k <[trade-record-one-len] of myself]
: L  y2 T- y  F[. I: R7 S, V/ i% n
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) + o/ ]- |, B, I" b3 ?8 r  W( U) ~- ~
set k (k + 1)+ w2 z0 V* g! f
]8 M* a" F1 |, S0 e$ L5 S
set [local-reputation] of myself (local)9 E5 S, M9 l: ~6 s+ _+ n
end
4 Z1 k) S- D2 S$ |* J% ]) ^7 p8 g8 j4 `' G5 n# w
to update-neighbor-total/ K; v& |; c+ @3 N6 L$ Q$ E3 o

# A. |6 O+ x+ z% N& lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( M' t: Y) \- o2 |% x

0 |" b  V5 L  V% _: P) b( B

& F/ e* E( G7 Fend
6 F/ S- y- V# V* Y
, D" h6 N; N* Mto update-credibility-ijl % C7 B" T. t4 Q, Z! p

& _- M+ \$ c. j+ W# ^;;
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。
6 m; z, j' t! P# ^' C0 |let l 0
0 i8 s, i9 M, d( h" U6 Y5 s0 x# ?while[ l < people ]
# u; e2 _; ^( h  \/ q. D;;
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1 z8 U' K/ E. \* _% x3 |6 ]
[6 J3 ?0 j- R: B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# X3 e7 F- |6 q2 a* hif (trade-record-one-j-l-len > 3)
( b9 A, i7 u+ Q5 s5 g[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-one1 t! c% A% @" }
let i 3
7 b0 a" Z2 `# {! A1 J. ]9 flet sum-time 0
: X0 t& f9 f- k9 ^- gwhile[i < trade-record-one-len]2 ?  g# G, T. X- u! p1 ]
[% I" x5 ^, x( Z; u4 T6 A
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& _4 ^: y" X8 k; m1 j% Oset i4 A' K5 Y6 H6 ~+ v' Y3 {! W
( i + 1)

+ ~6 |/ M( K9 O* p2 G  {]4 u9 F6 T+ M! R3 {
let credibility-i-j-l 0
; B" _2 K- q' R# O4 l- ]/ {1 B' D;;i
评价(jjl的评价)8 }/ H) L( L$ d/ A* G, `( m0 q9 z; F
let j 36 F4 G/ v: c$ F3 Q) _
let k 4
8 s) u6 z' f! q5 \- zwhile[j < trade-record-one-len]
% F. |$ V6 b: w/ h[" b1 Q9 m: t) `* A7 {* W, @
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
# E+ I; _; E. 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)4 ~) o' |1 R) h5 A
set j' O& a" S. Y+ M9 @7 F9 B4 m
( j + 1)

0 M9 |  y0 D6 E$ C]
2 ~; }8 ~, [' t& l' W8 @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 )); I, O, ~0 X6 k+ _' m% c
! F9 x8 G- Y3 y9 z1 r8 H: [' R0 y
2 u* {/ C9 E2 C. W7 F
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). i- b5 [6 f( f/ W0 W# \  z2 @% \
;;
及时更新il的评价质量的评价
- X5 Q6 R. N6 \* w% M4 ^' A3 ]set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 b0 t" a& T+ ~$ r8 I9 z. _set l (l + 1)
5 @, y* |7 v: j9 R1 }]+ U$ W" u$ N- c
end/ J9 s3 q' ?% p

0 A; Q. t+ |/ m- Mto update-credibility-list
- J8 t; Q, X; R+ Ylet i 0
# G4 U5 G4 C1 Nwhile[i < people]
" x& T6 S: n  O' B# a[
8 C6 O, |, H7 ^7 J8 e& [& Rlet j 0
2 t3 X1 p6 B5 _) h1 V7 rlet note 05 S( K" `: A8 _7 G1 l5 B  @
let k 0+ Z$ J6 F$ J. g' U+ O3 I
;;
计作出过评价的邻居节点的数目+ _* M- f$ n# ?& F# u+ ?
while[j < people]
6 Y3 f$ s3 M6 U* l7 \' O2 }[5 Z  s. C% s1 m& \+ a
if (item j( [credibility] of turtle (i + 1)) != -1)8 G  w% M! ?+ b6 G, _' d. |6 _' i
;;
判断是否给本turtle的评价质量做出过评价的节点
# f: [8 n- z& q$ f, ?. @3 ?[set note (note + item j ([credibility]of turtle (i + 1)))
( j6 C3 j+ v. k7 D  A$ q) l;;*(exp (-(people - 2)))/(people - 2))]
. V2 b1 t. n9 q7 R
set k (k + 1)" i4 J+ ^3 F5 E) R
]0 Q" w7 g- K: W4 K8 c
set j (j + 1)
) I% O5 P& B' d: ?/ R8 t# E3 V]: k3 D& T7 v: r' o8 F# D5 |
set note (note *(exp (- (1 / k)))/ k)
& t0 y  z5 f  _set credibility-list (replace-item i credibility-list note): [5 e) Y6 C* p8 r; p6 G5 j
set i (i + 1)5 Q% j' S' L5 i9 N( l
]
: R. W$ c: k) D. F& V/ fend
2 E8 N; G3 u9 Y
( r- A& s# G; Tto update-global-reputation-list7 h9 C+ m. z" m- m: G4 [# V/ w9 y
let j 0/ S. X9 m8 `# a5 j; h/ |2 m
while[j < people]
. U! f4 Q( Z! Z2 r6 M# X) X. J% b[
4 B! C- R2 a5 z) G8 h, U' Zlet new 0( e: [$ ?- o) N% U
;;
暂存新的一个全局声誉
, o7 T( h% {$ Llet i 0+ V$ C6 l3 I1 }  D3 u0 o
let sum-money 0- l8 c; G+ T  \$ p# x
let credibility-money 0$ \* `  G6 @7 N. J/ u* x) V, w
while [i < people]7 s0 w8 Z' \! K8 w5 Q
[) s% v6 ^: ?9 q$ e. l
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) O; I0 O7 \) P) {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 K+ Z% z2 m$ _  ^, V+ t4 cset i (i + 1)" g7 r5 G/ f5 j
]5 I  c- s  S" D  C9 j
let k 0
( o9 D7 P. p( Q" R5 [( l  tlet new1 0# A7 j9 y% x& V1 r# Z2 @' @
while [k < people]6 |* s5 K0 i3 h2 E5 K/ f! r
[! F8 D* G- ]. C2 `
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)
+ Z  \, _0 c; h7 g2 fset k (k + 1)1 ^; z4 v+ r* K& k* g3 H
]3 n* m( S  ~3 W1 Q2 c
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; R8 ?+ ?/ ?  V1 Z
set global-reputation-list (replace-item j global-reputation-list new)
# _- `# J, v& |: |' I6 f; y2 Wset j (j + 1)
* _- }' E% w* d3 v- Y5 m9 []
5 O( w/ m5 h' d( l2 lend3 W$ k& o2 ?2 ^* x
2 @4 X/ r; ^, C

  q& u, L; E$ |# z1 [' x2 y0 p6 K1 ^+ D. B$ }
to get-color- x$ I$ u+ x* H1 j9 H3 U
- M& o+ F7 Y( ]  G2 p
set color blue

8 A5 \0 E. F  c" ~end
+ @7 w' Q! _3 A* Z. `1 m3 O
% x' L: ?) W& ]9 R7 xto poll-class
4 @4 a8 Z. T/ }+ X" send
) t: E) m0 R2 p) y8 M: [- W. f7 u1 q5 \# _
to setup-plot12 \' p* f+ {2 K7 Z1 B
1 o7 D. c4 U9 _& w' Z
set-current-plot "Trends-of-Local-reputation"
4 X# g: H! h* d$ }+ i
& `/ v4 r; d/ Q
set-plot-x-range 0 xmax

0 D2 F9 S8 O4 _7 a& A$ g0 x* D% L$ {( \
set-plot-y-range 0.0 ymax
; _- y% E) o, O/ j- f
end1 @4 j& ?8 L) P+ }

( o, O% x6 V$ B- n" xto setup-plot2
- ^6 r. Z  k5 n6 n1 O+ I
. O5 [! U% E& l7 x  W7 rset-current-plot "Trends-of-global-reputation"

' a/ X" w  T8 Y9 D" k! s' X* \2 `0 N
set-plot-x-range 0 xmax
6 d( @+ I& N9 _& X( x+ @! v% `

- s" g5 b% w/ q0 h, V0 `set-plot-y-range 0.0 ymax
+ O% Z# `7 o/ e" s; @
end, m. R7 {- z& I& l* d/ W6 Q+ k

" v$ c, A, `( o: {1 G: V8 yto setup-plot3
- H+ C1 V3 J1 r0 Z# f/ N
# k+ a6 i- y- w9 i6 V$ Vset-current-plot "Trends-of-credibility"

; u) f/ a0 K4 C: c+ z, D. K1 G
/ I8 d* j" p' Sset-plot-x-range 0 xmax
& s# E; n9 L7 j& J" Z) {1 h! p
0 E: P* i5 ~* n4 F% h% U# n
set-plot-y-range 0.0 ymax

+ g1 B" P7 l# ^; u& t# oend
. J  O; m3 Z4 Q# |) j& D' }3 C: S/ w7 a  ?, z
to do-plots; E4 v5 Q; t2 r6 \# E: h/ R0 x# ?# @
set-current-plot "Trends-of-Local-reputation"$ {6 f0 D  w. d
set-current-plot-pen "Honest service"
  G! w- {! d4 u- Q9 F* Y5 i. cend9 L7 c- b7 [/ m

+ b  g. _3 d% n+ _. 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.
' Z5 D1 [& D$ F0 N% O3 Z$ l2 l( }2 U6 q1 @/ j
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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