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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:
! i+ V/ s5 A0 q/ U7 a8 pto do-business $ @$ S. D1 j" g, m9 o! |
rt random 360; i7 A6 q6 s! c- l
fd 1# E+ e0 G6 T* R) D0 ^6 A/ U6 F* Q
ifelse(other turtles-here != nobody)[
) `  I6 j( @1 b  c" h3 s   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.- t7 p; U; V4 o" U% U( @, t
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 p, u; g/ o- `9 }9 g( k- z, U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) d, ?  E0 y5 \   set [trade-record-one-len] of self length [trade-record-one] of self6 S# X$ @% A8 I. A* R: l6 k
   set trade-record-current( list (timer) (random money-upper-limit))
. M4 ~# ~; z& k& Y
0 P. A; a0 Z) ]! i问题的提示如下:
) n  t1 E9 d' _8 ?' P" G& c: h7 t6 [9 T
7 e% b  m+ F6 S3 cerror while turtle 50 running OF in procedure DO-BUSINESS
2 `; E/ I7 r! v- t: S' x  called by procedure GO
% `3 `# n* m7 O1 o$ |OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 E/ ]- a0 {7 ]! `* |. i$ R
(halted running of go)
; x6 \% Q1 Q' @6 y8 t
' D! L, z7 {* _: E  ]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~~* p# ]" t0 q/ |/ G( Q
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
, u! m8 \0 T5 C) {5 V: [globals[
+ f2 P4 b+ z6 [) B9 L% yxmax
( \; h4 \9 s# @! e5 D" k; ^, Yymax; w6 l2 ]  r( P, a! ~
global-reputation-list/ |& g6 s1 _' P, F2 {' A% x

5 B. r: r# y# \- x3 J0 w;;
每一个turtle的全局声誉都存在此LIST) d, T  H. D! V
credibility-list% O5 @$ t) z1 V) X) ^! N, b$ |. G7 V
;;
每一个turtle的评价可信度
6 r' @: K: Y8 R% D8 A. E* u) Qhonest-service9 [7 y  P8 _# R- c2 N+ Y, S0 m, o' |6 n
unhonest-service6 Q7 d) O( t7 E1 i, y0 i. B1 F
oscillation1 F" Z1 ~+ x2 S4 P; V
rand-dynamic
9 v8 h/ h' [% Z0 O# W: s% B( y# m% e]1 B- r+ m3 D0 T5 g6 M5 M
. S$ G3 I: }' ]9 ^! @/ s
turtles-own[+ V( q7 `& ]7 F+ \1 I8 u
trade-record-all
0 G" Z  f$ w% a/ c0 Y& F;;a list of lists,
trade-record-one组成
. v" d4 g0 V0 m4 ^! Utrade-record-one7 L) Q! b  o! x' c7 `& O( h3 B& v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 l2 s  E, [; x8 {# s. T; N& K8 U+ F' U! U1 z+ x4 F" Q
;;[
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]]
+ a0 e. N  K7 z3 i4 Htrade-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]
  w! L. B6 M  N* i! fcredibility-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
+ h8 E( v9 Q5 x% f. }9 s- ]/ J* fneighbor-total
  i; J1 i) p1 F2 ^( r! y;;
记录该turtle的邻居节点的数目- z8 X. }8 d3 R' s, U0 @' A
trade-time* c3 w* h+ F' E4 R9 |+ g: d3 \
;;
当前发生交易的turtle的交易时间
5 F$ a  c& }+ |appraise-give
, j, I* ?7 i; H, b1 n8 j8 Z" V2 V;;
当前发生交易时给出的评价$ b3 E* d0 F; D* v% x
appraise-receive
4 R2 T  M6 C3 r4 M;;
当前发生交易时收到的评价
. e, D5 |/ R$ D) e# C% fappraise-time" X* o. N1 R- V8 {0 ~8 Q3 Z
;;
当前发生交易时的评价时间
! s# g6 I4 I* ^+ U0 Slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 @: f' O: G/ m5 M" ?trade-times-total. X! @. G/ c" J. ]$ R
;;
与当前turtle的交易总次数
7 x& Y  H+ b% Rtrade-money-total* y" L/ D% h+ H$ `
;;
与当前turtle的交易总金额
: ^, z' \8 T! [local-reputation: n! w8 p/ O5 V2 ^; \" N( T
global-reputation
, }* r. \8 P, lcredibility
7 c1 D  C5 q- f. X% A. O, a" `2 a;;
评价可信度,每次交易后都需要更新
- ~" g6 z! _* S9 Q$ s$ M2 I$ O1 n% i/ Gcredibility-all7 X, ]' u# W, n' ~1 I4 T
;;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- U' N

% v( z3 O6 t; j+ k# X  I" g" S" };;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0.52 c4 _3 q, v1 r; J5 w4 a$ ?+ m$ L: t
credibility-one1 |: t  a- A1 K
;;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
/ Q7 g$ u4 d  y" F/ g0 zglobal-proportion
6 q$ F7 N, O$ d0 O% Wcustomer* `2 c7 R0 [7 F% }
customer-no
( h% n+ \5 j& B1 X4 ~trust-ok8 ^2 R" c9 `! q. T/ E) {
trade-record-one-len;;trade-record-one的长度- a& b6 A; q; H; h( I- R3 l: g
]6 x9 k1 a6 k+ i7 i, L) q' p4 G
7 ]9 t3 h5 e; d5 r
;;setup procedure
- V( `1 `/ u2 m4 {& K* X) y  ^: B3 h4 n2 M7 F7 a
to setup$ \% p/ q$ Q, Z/ K. k2 L

9 o5 n& C- Q, W: W& aca

: z4 W( H) j! t+ X* L/ T
2 A6 d( |' d: m& F$ qinitialize-settings
$ g) o. A! }7 i7 t% G2 K+ c

1 k% t% X& k* ]' ^  z; I) b) Zcrt people [setup-turtles]

3 n  \0 }8 t6 h: [) z
/ ]2 J! ^3 l, i8 Zreset-timer
1 R/ X# ]5 P; u  U2 q

! I7 T9 b3 f/ L1 O. dpoll-class

8 W* S: n0 c0 w1 N/ J6 D3 g* q4 G7 _
setup-plots
6 h5 Q: W, L, c9 ]$ g2 Y

( X" Y/ J& G4 ^$ ?& Sdo-plots

* C) F, Q0 u. C& W" {& t, M1 yend
/ N1 L5 l8 l' F  _; t( ]- g
0 j1 G! [, ~3 }+ X2 {1 `to initialize-settings
: I' H3 t( j. N2 a% }# N# _
8 a( c! a$ ~- _4 J% G- T( U, u0 Jset global-reputation-list []
% D1 C( T9 E- k8 K6 x* ]" T0 H
/ f1 Z. _& s0 e5 i& Y
set credibility-list n-values people [0.5]

0 y5 ?/ D) O0 k
8 l$ K8 g8 R. r# K! e3 N$ xset honest-service 0
& t7 Q" P" x1 l- {3 v) d1 w5 N. O
9 f( G& c( Z8 [2 o3 ^! D+ H8 n0 H* _
set unhonest-service 0
5 h/ b' y% `! }. w- Y
$ f5 ^. X# m5 v# p0 T% S; u# O
set oscillation 0
/ i$ v( V, |0 M0 O+ |: `0 [

+ ~5 u- G  m# Z# T8 |set rand-dynamic 0
8 J; ~, x2 D; x) J" u
end
! o) ^% n; _7 E* w' I6 D" Z
4 e; J4 G. ?4 o: u+ ?& v9 H2 B0 }/ w$ rto setup-turtles
# z4 q8 \( Z+ g! y5 {set shape "person"
4 k9 z# P$ K6 K( b3 P8 |, j, a; Nsetxy random-xcor random-ycor4 L( L# T* b. k( w
set trade-record-one []
! M2 F5 ^/ H; Z0 k4 m
( G5 g! W) K% m8 z+ h! u( Z$ j
set trade-record-all n-values people [(list (? + 1) 0 0)] . I" K6 X9 ~2 W$ T7 ^

9 W4 K1 N4 r1 S6 ~0 {, U' U7 `set trade-record-current []
+ e2 g6 |) P" P5 F' v) s5 Mset credibility-receive []
  d2 [: U* N9 C; I% k% ^, xset local-reputation 0.5
$ c; M& G/ I% w2 x; rset neighbor-total 0- {5 \7 e1 ?1 b/ r8 t
set trade-times-total 0
7 l: o( I* \+ h) Tset trade-money-total 0
3 @9 X( N1 k; a1 c, a, |' D, vset customer nobody
# F' O9 Y, w- c0 B. W. |! d# hset credibility-all n-values people [creat-credibility]. y" [3 _2 M: x& a! v0 f4 e5 L
set credibility n-values people [-1]  g/ v9 w0 I. N! c0 f( d) W- v
get-color
2 x% u4 y9 @- Z/ k5 U! ^$ u  _' ^6 ^

* Y) t& v  J$ X6 P/ U1 Q. Mend
( Z, Y. F4 R/ o, f$ B0 l" J1 v, u) |2 S4 A; r0 u; w+ D: t7 |) k
to-report creat-credibility
) `  f* j2 B& B1 e  a* [8 z. _. z, {4 Ereport n-values people [0.5]6 `5 z) B% l; A/ |- t" G
end
: ?9 j! F- K3 X0 P$ r
( e6 v7 F+ P. N1 uto setup-plots
) ~/ d# n) X  g- k( o: v7 [1 `4 W: \' v
set xmax 30
2 I. u$ u+ C$ a5 n- w

- W7 |% R" y# h( r, T6 E: X+ Sset ymax 1.0

" [8 Z/ @2 `( p# U2 f5 p9 ?9 Z* c7 t) D: I- d) [
clear-all-plots
2 T  F4 O: F: ^

1 O+ p4 m0 e$ @: d# p9 x- j7 ^setup-plot1

% C* c; u  ~" g" K* ^
1 q1 U& @" p% g, [8 [) [setup-plot2

/ B. C- a( h" l  u- O% ~  W
: _  x8 Q: T( ?+ Tsetup-plot3
0 g3 l/ e) p; `  K
end
9 G  N/ I; a) {. y4 Y% ^  P1 S) i4 \# Z
# H7 i3 q7 _, o;;run time procedures/ f% Z& a$ b/ B0 [

% Z9 F( a% {& v* ato go
# f) q$ g5 O8 C+ Q' X/ d1 R
! _! u6 O6 p( g% ~! J$ x$ V% cask turtles [do-business]
# H  ~3 x2 v6 {, C( o
end
* T, m( @0 F1 a( Z
% a4 m  P5 U$ Z/ ?: r# kto do-business
- d) S' b( }% l& M8 X4 h4 {" U
) r* x9 }- \& l0 S( x8 @
& M/ C* ^( c/ N( Q
rt random 360

% [1 P. }: D# Q4 {4 O$ m2 l: {
5 `* M1 ]% R! e7 j8 V& _fd 1
3 ]1 l, ]/ X% U0 L- @
7 @0 r# l$ P1 N8 F" v% g' G
ifelse(other turtles-here != nobody)[

; N5 G. u( v4 T2 Q$ ]) n+ o" N1 _: l" [8 P% Y% u) S6 R! u, _# s. S
set customer one-of other turtles-here
5 d! n( D2 c% [* d
0 B( K2 g+ \0 D; ?
;; set [customer] of customer myself
* c, {. v. Q6 d3 e2 i! L/ R& e
5 g' ], X' P) t7 c+ x0 h6 P2 Y9 |
set [trade-record-one] of self item (([who] of customer) - 1)9 w. n& W1 t2 y* c% [
[trade-record-all]of self
# _5 q* c, P9 P) \/ d8 J;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 l" e5 Z* |2 M/ ]  a5 H3 K" c# d  ~+ F4 _% m2 S, X3 V
set [trade-record-one] of customer item (([who] of self) - 1)
4 X4 ]: \+ k; H9 b0 k[trade-record-all]of customer

+ J5 j/ q) S" L2 u; o; Y. D" D) d# g
set [trade-record-one-len] of self length [trade-record-one] of self
# w* l7 ]6 @- ^7 k0 z2 ?* T
- g' l1 H3 ]* K0 r3 K
set trade-record-current( list (timer) (random money-upper-limit))
! R7 y# v2 f8 x' c$ b
1 ]5 k4 w5 N! V; g
ask self [do-trust]
6 X; H6 f. [1 n! v) b6 f+ C;;
先求ij的信任度0 }' A4 O/ J9 ~+ g

6 }; m4 l4 B3 Xif ([trust-ok] of self), B( _4 A/ i4 v2 n2 R) }3 Y" K6 d6 @
;;
根据ij的信任度来决定是否与j进行交易[
" o$ E3 h6 R& o! O; ^- C! _2 E  Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- b9 X- d' w6 x, E* z# O7 m4 c

! |  `; `( N8 ?* [8 q[

) P# d! {& S* E1 ~' d: }5 H5 r: O$ s
$ |/ h! @8 q8 e* Gdo-trade
9 X& C7 n2 D. {* x" R; E0 y5 B
6 [- f3 E9 m# h5 v7 K+ n
update-credibility-ijl

. ~6 `" g/ O9 t" T5 a' r  ~4 W
3 t$ Z5 z) N- Q" w" I1 A: Hupdate-credibility-list" F- T$ N2 K# m4 ~1 M
1 q; L6 J' c0 ]/ |3 f. F( B1 C* T
0 L# {; ]$ W7 M# `8 g; ]
update-global-reputation-list
7 p. {. v8 d+ j  G  H' {
2 ~3 S6 k  k1 B
poll-class

& n7 _8 s9 e. Q5 U/ O! R) p
- p; o; u  ?7 K7 G( L/ \( @get-color

8 Z9 ~2 Z% v( Z1 a1 R# u" `& n) \2 |5 e! M. b
]]
/ V3 h* o2 ^) T; q, m0 C
2 l$ Z4 {7 z; h& w0 X% _;;
如果所得的信任度满足条件,则进行交易6 N) @9 G$ o4 o8 n; {6 K- r
( P% F+ l: x, c7 A3 v; a
[
' e: _4 F8 T% n& e

, r* t+ w# E' H6 Trt random 360

& g  Y6 {; R; M% K$ ~0 L+ c, \8 O0 e) z& p8 [' E/ I* j$ f
fd 1
0 I2 X/ m1 Z" k4 W( G9 Y

1 Y& ^' G# H! S7 J& v* ~+ b]

( X4 u" t9 _  c+ g
  Q6 `3 d& O( y0 F; L: ~% kend
3 R9 A( K4 I1 @7 j6 D- E
2 n: C5 P' n- q2 v, j$ i2 F
to do-trust
$ S# V  y( f5 x$ \set trust-ok False8 v7 [4 q: ~7 G) m* U$ [! H

$ u3 \9 r: l) T) q1 N5 r% H

: a7 A6 d7 D" b9 ]% ]$ X6 B0 alet max-trade-times 0' |3 G& I! \" K$ K: r) S
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- I7 t" B* a  s+ v
let max-trade-money 03 ^7 m; j" T1 U* Z! K3 X' Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 r6 @5 k) T' a" [& T  \" Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! Q5 Q; D3 o+ ?% O/ [. l0 z
. U2 S$ _: J7 Q! \, s% J

9 ~2 T. i$ Y2 M, gget-global-proportion- X% R) Z: @0 T2 D/ P' }4 e* p# Q
let trust-value8 j; @* G5 R: H2 N6 L" k8 ~
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)
7 k0 Y: \9 i  x2 Z& T5 r* k- _
if(trust-value > trade-trust-value)2 ?* f( S: w3 v2 T: u
[set trust-ok true]
$ j3 [9 B2 K$ y( ]) m: d2 N( Yend  \1 A. Y/ O2 ^4 m

% X* @/ s* ^+ P. f6 Pto get-global-proportion
& a7 i6 u7 b6 u& U( yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 h9 L! @/ \, w4 m0 R[set global-proportion 0]
0 d: d" j1 s1 Z* p[let i 0
8 f: q( X* R8 Z& f( I" M, @let sum-money 02 U+ k3 b0 S5 F$ T. k
while[ i < people]
9 ?$ o' }4 D9 K. B( a8 d[
4 \: `9 H5 P0 P* \if( length (item i
: E$ q  S% @  s7 k* y8 c4 ^$ B[trade-record-all] of customer) > 3 )
' k4 E/ T* @: `+ `1 h
[
( f5 v) m6 l. h( _, p# j2 |' Sset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); U9 W- G7 }; x
]" t2 Y% B1 g( `7 [/ d
]& h7 t* D( `& j3 }
let j 01 c- S% ]0 e1 {) s3 @2 t
let note 0' c! O4 Z2 _6 t9 X
while[ j < people]
/ V6 T& c! H5 B+ d2 m[
0 U2 y; `9 E3 e" s. ~9 Tif( length (item i
9 u7 f0 G! ^. t2 ][trade-record-all] of customer) > 3 )
: |" S' @( n0 e! L  `
[
, a& Q; _1 D7 S- Y) w* o4 T6 L8 Z6 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) o% O. o/ P+ ]5 j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 h# q2 }4 U  _* b) x0 u/ e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 E6 U2 N9 z- M- M
]
) I( i9 W$ [* ~. N' J]# C, ]* G7 Q9 A3 b
set global-proportion note
4 `4 E( Y0 W- V) }0 ]+ ]]
5 E6 @, m6 _' L2 `5 {1 T. }, h4 ~. P5 bend
% l' U6 j- ^# F: ~5 r$ u7 C: P# G/ p& X6 x2 u" o3 D
to do-trade
/ E$ C/ O6 p' d; A8 s/ I;;
这个过程实际上是给双方作出评价的过程" S/ z( v" S4 T1 `1 E4 M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 P1 ~. \' f/ |2 h! H6 Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 ?  [1 t' L6 q
set trade-record-current lput(timer) trade-record-current
! K$ f# P; j" b7 x; o6 ^% e' t;;
评价时间
% M3 t" H1 F" G5 P7 mask myself [8 _5 A+ N% T* F4 W+ T. A5 Y$ N
update-local-reputation
* E$ x- ^9 ^. T; j( y6 eset trade-record-current lput([local-reputation] of myself) trade-record-current
2 u) q. K- x/ X* m0 X3 }* c% _$ z]
  `3 j6 x; e! p7 ^' V0 Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 Z$ ]( i+ R% o4 N( c2 k) K1 I;;
将此次交易的记录加入到trade-record-one* \9 z1 y- ~4 B! f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 z" c/ s& s) I4 k2 @- w7 j& |+ e% ~
let note (item 2 trade-record-current )
9 c* r  B! n$ `6 g0 K% O# I  f1 |5 uset trade-record-current
+ U1 K: y: M& z* H+ k(replace-item 2 trade-record-current (item 3 trade-record-current))

) P2 p' \' c4 O9 M! O+ _3 tset trade-record-current3 ^! W! y" K' ^$ w, _6 v
(replace-item 3 trade-record-current note)
5 H1 E3 y- z4 I4 n9 q: {( s( P$ e- Z1 d1 v- [. `

, L7 |: N6 x& |! @7 Zask customer [7 ^7 p1 X5 [5 q3 c" k/ G
update-local-reputation
; _) v% i5 }  {/ nset trade-record-current- R: }  e. n2 i4 J! q5 H
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 _  a( o  Q: ?, a; ^4 e7 x
]
3 I$ K# y% N( M' w* W# D, @  J" i. d4 D: @

; P* L) K# ?( Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- ~# H: `  S$ Z5 w* q5 h
- c2 Y5 z2 |' C; L) @% j
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 [- V4 f: l; b+ {8 F# [
;;
将此次交易的记录加入到customertrade-record-all
; w4 O5 v0 U' V/ ?2 Fend
2 Y  ~" D& f) K0 N" G: J8 e2 v; `9 e5 \1 A% F
to update-local-reputation; Y0 ?0 i4 @9 t; t
set [trade-record-one-len] of myself length [trade-record-one] of myself3 @8 Y9 C! G; P1 D. M3 y/ x

+ x1 N% J( C: i" T1 D$ K9 K9 g1 @: s5 y* {( n, p
;;if [trade-record-one-len] of myself > 3
& u! v/ v# F9 C6 {- w" G& L7 ~9 o8 J
update-neighbor-total' t* s, R. N5 q0 ^- I3 ^) O( Q2 V
;;
更新邻居节点的数目,在此进行
1 @9 R* S! J" Hlet i 3
* {3 U4 Q- u; \4 \let sum-time 02 P* P' @3 v9 X$ M7 g% v' ^
while[i < [trade-record-one-len] of myself]
  u" d' k- P4 R. `4 E# n[: f- o) R9 Y- ^! j( i5 U# k
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- T# m, P6 b9 R
set i
/ P2 q; w- c1 _0 D4 K; s( i + 1)

  D* |: S( b# {0 W% U# k$ p, W7 f]) P" P' w, m+ z+ p" b. _8 j2 [
let j 3
3 P  \, h( M/ s' Slet sum-money 0
+ u) a! @+ X2 vwhile[j < [trade-record-one-len] of myself]) t: r% A2 |: G# v. |! i; L% D
[
) l, h/ Y0 x' ?( a8 M1 [6 m% h8 A  Dset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
( V  k, C3 P" O" x* |' |set j1 g5 B$ y5 _2 y  q
( j + 1)
0 M) f" v: D& N8 R( S  a! ?
]
( S2 C1 H3 e9 P( @1 l+ C. nlet k 3' Z; S4 e/ {' c3 F! B
let power 06 K, d8 w) J2 n
let local 0
3 d- r! `: o' v2 awhile [k <[trade-record-one-len] of myself]
% C' Z2 v) u$ m[; K! k+ C- P7 O: ~. f+ ?
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)
4 b7 R6 ]4 j7 o, Jset k (k + 1)4 U8 I( `4 m( T! L
]6 T4 o- h# e. X0 `
set [local-reputation] of myself (local)9 i0 _9 y- ?' {" _2 a
end
) @: x6 X5 b6 n" J
6 ^# M3 r% L( \to update-neighbor-total
0 c9 n; e2 X+ z. ?7 e1 Q9 `4 N4 s$ T8 q% W. ~1 w  [8 R9 X# |1 m
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; ^& j: R! A; G0 O
* \/ Y  X7 x5 [" g$ u( p

+ p/ t$ \: }, K% c4 c! Oend
9 R/ @4 m1 K* L) O
4 P' [& X  P, b+ Jto update-credibility-ijl * I: r) G% W/ m" X
# V) ~7 x- E+ ]7 V6 [8 T# ~' D
;;
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。. M5 `- d0 Q- T# {: {
let l 0
# I% g6 t1 S4 }) y. Q" u7 v5 dwhile[ l < people ]
2 }5 h  B- ^1 w! n;;
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0 E: Y% }; Q9 s# f1 E
[: `$ {3 y9 P/ F/ P) y% _0 G" d8 H
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ n& k+ E3 z& A
if (trade-record-one-j-l-len > 3)
- f. m4 b. }% U$ s% l7 @[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
' p  q: ]" D. W% k; Tlet i 3
  v+ b3 U  z& r$ ~$ V0 qlet sum-time 0
1 M8 w% v" g* l8 Q2 D1 hwhile[i < trade-record-one-len]
- T4 {9 S+ V' z$ d6 E  A) p9 X[; t' J& v8 b% L( v4 E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  O. L4 Z' P" n( i6 z* B; K" [set i
1 Y3 s3 a$ n' B2 e* |0 Z2 v' R( i + 1)

5 b4 \# o1 H: ?]
4 B' d. n/ v; q- olet credibility-i-j-l 04 r+ F& I* w' F4 t8 T, H( W6 f  A8 o
;;i
评价(jjl的评价)
( ?' ~7 A9 x, E8 ]2 P7 D' glet j 3& j8 b# C0 y4 z: _, U" `, c& e+ m
let k 4; O2 ^2 g7 ?6 I1 _) C- g
while[j < trade-record-one-len]1 `. Q" {, k. b, I' b4 @9 a. R, G
[1 R( j& V, ~- Y. D( K3 F
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
. @4 B* N" X3 ]: w2 c# Kset 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)
) |# R/ H  G+ ^) ]& M  gset j2 H. T0 z" G5 j3 n5 W* O+ ^
( j + 1)
' F) E5 h" G7 J, K( ?. Z
]
1 \5 y& @1 `6 `; b. L' Zset [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 w: O: H$ d/ n, k, Q
4 G+ V7 T2 @9 K* X) g7 O
4 p; k$ a# _! b% J; p! {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! ?3 K4 Q$ z) h1 h
;;
及时更新il的评价质量的评价
! {' I5 g5 R2 k  `6 Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ h+ Z' Y: G' aset l (l + 1)5 o! f1 c  D. f' u
]) B; d3 f: B% s- N# O
end
1 U; N, \! N) k& Z- l& P9 @) K
to update-credibility-list! {. r/ J+ x* N5 ~* W2 A
let i 0
& z; ?* ~  w6 T4 cwhile[i < people]+ l+ o5 p/ l* H8 V  r, c
[
2 W0 ?0 i) a2 G9 r3 X( hlet j 0
0 ^+ L/ l, G# p2 Qlet note 06 W8 e& y1 s' P5 ~2 i" a! X% I5 }! F
let k 0  y' `* U0 a/ w5 @) A" Q1 {1 e
;;
计作出过评价的邻居节点的数目
& h' d+ j% X: V4 \/ Lwhile[j < people]
# d, u2 U/ f' @( V3 k7 n[
" \  B/ }9 a: Sif (item j( [credibility] of turtle (i + 1)) != -1)
+ ?. Q+ \- \& s& b1 H9 U3 k( W;;
判断是否给本turtle的评价质量做出过评价的节点
* K% r' J0 x5 z. t  ~/ s' E* t[set note (note + item j ([credibility]of turtle (i + 1)))
& k+ m1 O5 S* c7 ]8 T& M;;*(exp (-(people - 2)))/(people - 2))]
2 R( u2 |. |. {  |% ~
set k (k + 1)" z% j; W! s6 _7 C! Q
]( F7 c" I# u5 t9 T7 }' |2 S
set j (j + 1)
* P9 A9 W  p9 G$ V6 f9 d]: k, D* _+ n$ ~* i. s
set note (note *(exp (- (1 / k)))/ k)
1 @  d4 p1 w/ L+ Pset credibility-list (replace-item i credibility-list note)
( n; N' r% v5 e- R; z8 G! ?set i (i + 1)( _: A6 n- i/ H0 ]
]
2 d! y  m$ E' f# s2 \end
7 D' Y* Z& u8 ?( V6 {/ Q1 i* Q! f9 Q# G3 ^; H7 w4 r3 w9 Z9 f
to update-global-reputation-list0 Y' a7 {3 a! S4 q0 \4 ]. I
let j 0$ L/ F. O4 v4 e. P% k1 l
while[j < people]
/ E; [: y) L# Q  w- c) r[
# W1 o. q" m+ t7 h/ {6 T3 dlet new 0- v7 j9 T% V  v8 g) H0 h
;;
暂存新的一个全局声誉' E7 \3 U. v9 T9 Q
let i 0
# d4 z9 F  Y2 Olet sum-money 0
# I6 m5 k/ D+ {let credibility-money 0
$ b2 N9 H! P! m+ gwhile [i < people]# J3 W& ~; h) U. I: g9 l
[4 _/ o# V9 U, a+ l: s" \* _9 Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' g$ k; M' p5 v5 R7 E# Z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- p5 t2 Q! M- H+ e2 C1 X# }2 w  `- ?set i (i + 1)
0 i1 x: Q8 [! v8 Z5 ]]8 t- L/ ^$ r. A2 N! m) ]: e6 e( Z
let k 0
' J0 z0 T& m- ~: d2 }2 ^: h. Glet new1 0# l) l' |' _# h/ @( ?' n
while [k < people]; \7 F6 ~# g; \; R: F9 p
[
; Q; y7 b: J9 r! ]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)0 P. F; P7 g; b+ _$ o
set k (k + 1), l) W. O- u& X* U
]
6 E$ j  D' R- U- ~  k0 ]6 xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  F4 e& Q" {- R5 Xset global-reputation-list (replace-item j global-reputation-list new)& d7 k2 H6 P" M4 C/ z, V
set j (j + 1)# G$ f/ Y* l+ t1 `
]% F# e& _8 F3 b
end0 z: W+ B4 _* z5 `

# }0 ?+ U" f+ O0 U; y4 U8 |9 h' u# |% |! a! d- [4 I6 h7 ]/ E

! Y$ t: C2 E6 f* \& W  Jto get-color& J0 r1 i# z% J
1 t6 }+ k: T# A9 w
set color blue

* ^4 l4 O/ V: z. D# R! C6 `end
& ?7 x* d# _6 f1 j) D
, i0 Z% ~0 y/ b5 Ato poll-class* ~% D6 A9 L8 d! {' z* H. Y, J
end& B) H' K: o% l- r5 t9 b

1 U5 x; H5 `5 ?4 a: O- Mto setup-plot1. n* q! X  v0 d% s/ K

6 s4 w* m! Z3 _8 V& p# }set-current-plot "Trends-of-Local-reputation"

% Z  B0 {9 h: k- c8 P! {+ L# O5 u6 }6 H
set-plot-x-range 0 xmax

5 o2 c# S' @8 N3 [6 ~" ~+ B
: A+ {# S( ]0 Q8 e. y4 D& Iset-plot-y-range 0.0 ymax
5 P  f  q6 j2 W4 u+ c" Q7 ^
end
/ F2 M" A; m' m  B6 {5 ]* ]
. B! j; Z, r% u6 N+ c6 A9 m; \' n+ wto setup-plot2
. d7 t: W3 _+ _1 O4 c5 d6 y0 D1 |! q! z3 v
set-current-plot "Trends-of-global-reputation"

7 y1 e1 N6 i3 N$ W% K: G' m7 a7 v! {& h
set-plot-x-range 0 xmax

( {+ p0 u* _6 e# O9 M9 V7 F1 o1 I) S: I
set-plot-y-range 0.0 ymax
7 F6 E8 i4 t! Q  A1 w
end
+ \! u7 R- Q: I' K6 q. c& S+ Q# \+ R7 o5 W& R) }  o6 y2 ~& |" M- `
to setup-plot3: z; Y- ?5 ]2 t3 S

. S  `1 H! L5 g$ ?( Y' t' Tset-current-plot "Trends-of-credibility"
% p; ^' L; O* `8 U* \8 B' j
- ?9 k. J# ?% u
set-plot-x-range 0 xmax
! s8 I5 r' J: a  v2 [/ c
0 g& d2 a  y6 j
set-plot-y-range 0.0 ymax
6 q0 h* C2 B$ W8 ]# X- \
end
5 x( D( G3 Q9 v4 S+ a2 |% _; z
9 I- B5 F; x  {! A* j. X$ @; Cto do-plots
: a& K. E6 k; F* ^2 Jset-current-plot "Trends-of-Local-reputation"' K, Y! J1 w+ \
set-current-plot-pen "Honest service"2 E3 r2 z2 g  K, ]- n: V* z
end
4 P# J5 r1 e  j7 h' Q9 g- e7 s5 o! L% M/ A4 h4 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 f4 J9 ?7 @% P) {8 h; \$ p
8 `3 A/ ~+ k. k+ ^! |9 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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