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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:" C8 G- I; O0 T% x8 o/ c
to do-business 5 i  |( M9 K, E5 f
rt random 360
% }# D6 |' T. y fd 10 W  P0 R- H& E7 I* V
ifelse(other turtles-here != nobody)[
8 r+ K1 A" Z6 w" [   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.3 b; x  h6 B' Q/ ^( r8 P
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% e# T% s4 u% o/ W& o3 K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" v% X+ ^) Y1 r8 y   set [trade-record-one-len] of self length [trade-record-one] of self
, a) G# \! G4 f: F8 ?8 a   set trade-record-current( list (timer) (random money-upper-limit))+ U# v; {6 ?& F  k6 {( \2 ~/ Q$ w
( @0 B1 f" Y! h) J
问题的提示如下:" r: O9 E8 }0 [8 V0 c

* {: S* }4 k) N& f( C* f  ^8 Oerror while turtle 50 running OF in procedure DO-BUSINESS
2 E: R; q3 r8 u* I$ `( P: z( d  called by procedure GO
8 I" d. D$ s& I: H0 c" aOF expected input to be a turtle agentset or turtle but got NOBODY instead.8 ]5 A+ X: s  C5 t: T
(halted running of go)
3 v7 B/ [7 y: v: S- i$ Z0 _2 P& i- @
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~~4 v4 n% m; o9 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
$ J7 t0 R+ \, o( J, ^7 V0 S1 Xglobals[
* X+ W% v( }8 y  a$ uxmax! G- z- H( n: f
ymax
3 P& Q; X( x; y3 |1 \/ o5 u/ ?global-reputation-list
1 }) G# W! h+ b! A+ ]& I; a3 V7 c7 a, t7 U" }
;;
每一个turtle的全局声誉都存在此LIST
" V3 k7 J! ]+ _, Ncredibility-list! Y, o& z6 s- j& Q% Y3 V
;;
每一个turtle的评价可信度
4 s5 x8 s, j% y0 lhonest-service
+ i/ L* }9 A- |/ p% p+ a! f# Dunhonest-service
! }3 \( y1 p( x9 coscillation5 B/ p/ T4 f  J$ n. Z$ i. O2 s
rand-dynamic
6 M# l7 T% p2 y% E, {: L% ~7 e# K]
0 S. D( m8 \) r' u$ v, s! P5 N- S5 n$ i2 z- s* A4 h: h
turtles-own[
4 A. J3 e  A0 htrade-record-all, H" d: \1 @% i) A: j. j
;;a list of lists,
trade-record-one组成
  B5 g/ i# p$ ?. p7 i! }: _4 R) `trade-record-one! B" C2 t9 e  _1 M- T; O; H( b
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 Y5 H) Y- C' j. I6 E  c- g1 c% d. i
;;[
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]]# f, _' K# P+ X2 y: c
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]% W6 p5 Z4 o3 O& 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list
! h! t, {9 h& g6 O8 xneighbor-total6 \9 c1 D3 C' {) e8 e, n8 o+ `
;;
记录该turtle的邻居节点的数目- o9 d5 Z; q9 Y' H7 e( f
trade-time, J( e8 ]; V5 O- L# ~& C5 H
;;
当前发生交易的turtle的交易时间& R3 C$ p- A8 f# }- U
appraise-give
! I( O: H/ `% Q) Q5 \;;
当前发生交易时给出的评价
# m+ L* g& `4 p7 p' a/ \appraise-receive
2 c9 C7 p+ p& Q5 u/ f" H2 };;
当前发生交易时收到的评价' r9 z# Y) q2 @/ w
appraise-time  Y) p# l. F' n1 ^+ s1 e
;;
当前发生交易时的评价时间
- W! M$ X+ g5 L7 h1 Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉" |1 B  e8 U: s  c0 ?; Q
trade-times-total! \' a9 d) ]' d/ j7 v, X
;;
与当前turtle的交易总次数
( k5 h7 i" _& i" e. {7 Ktrade-money-total
$ C1 T9 d% I* X& }( r7 g;;
与当前turtle的交易总金额8 Y- \; b2 X7 r1 A& q
local-reputation+ e- t) q8 i0 M2 E( r) \! x. F! |
global-reputation& i8 U! M* w/ @' S$ [
credibility" O7 c  e" ^3 r" ?' F* D" E& ?" S
;;
评价可信度,每次交易后都需要更新0 \. [: z  `) ~4 ^  d* J
credibility-all
' j( \/ W; d% J5 o;;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
/ g+ R& X( m3 S- z) ~% F8 }' ~
! d5 E& d! L6 Z" r" H. v;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
  s) X. d! ?, r, t& P( `8 Zcredibility-one$ A3 }# Q# P- \+ e/ w. m8 {
;;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
) |4 j6 W) [; {# c# O2 {- Jglobal-proportion" V6 w' p, F0 j1 {! i
customer
2 v+ i# f  n7 ]3 l7 v3 B8 acustomer-no
6 m2 r7 o4 D0 Z+ n% xtrust-ok+ k7 o  Q) ?) ^+ s
trade-record-one-len;;trade-record-one的长度
$ c2 D' L- R* Y% y6 |]1 R! ~9 [( z2 R# a/ F. k

4 W1 a/ Z5 _- @7 k* z;;setup procedure
' W" K1 X& e1 _
) q' F6 n; z( @: h' Yto setup& a+ f9 x9 w! y; l9 t- u
9 o, P# s2 j( v2 G4 L: y9 ]
ca
& N% V4 k' c# o
6 _: d% E. Z* \7 W: B
initialize-settings

, S! D, c3 l! q, _6 S1 k# T
8 p& @3 ^, r( I6 I* Jcrt people [setup-turtles]

# ^1 U/ [. y) [3 f% N. }/ B  H0 R1 A$ u0 s1 ~2 Q
reset-timer
& d! V. Y1 ?( a; X! R1 a
' C; E& Z. H. W1 T
poll-class

- |% ?2 p) Y1 k9 o6 b' j2 Q# v* q6 c, i
setup-plots
7 K0 h* Q8 u8 i9 ^8 K
  ~# \6 n8 h/ b/ Y
do-plots

: g0 Z( ]6 o6 i; B. p% P: pend
( B5 r% ?6 H* E7 P- P2 i
3 Y% R* \: }3 Z# @to initialize-settings, E  w- }" |( a' S* @6 @2 D, L0 M

1 I0 H0 D6 n2 V9 R7 `+ Fset global-reputation-list []
- q2 {7 m- I5 e; d5 U0 K9 W) [- U$ h
8 s) ?- }1 R* x
set credibility-list n-values people [0.5]
$ p) Y1 J6 N8 k

/ @3 C- J! k0 M( Lset honest-service 0
" n* ^+ G/ v* S, V$ ]' g
0 f! [6 Z2 P. x* s4 l+ d9 I+ H; R
set unhonest-service 0
, X; ^2 v8 z- ^/ F+ H

4 ]( o9 m& V$ z8 Y0 e5 P. aset oscillation 0

( l8 I3 J: D* O+ B, C, ]' Z) p4 d  ]' L5 J2 R
set rand-dynamic 0
- J1 @4 P* k; U4 R# z
end$ b* T" v: q# \5 X  M% U
$ S; J2 c7 e6 e& c/ f
to setup-turtles
9 e; o, j$ E( [' {3 w% n# O+ w0 oset shape "person"0 _% `3 L, ^3 O
setxy random-xcor random-ycor2 z6 U; x5 i9 t
set trade-record-one []
5 K6 _# j0 a4 I3 y6 a. _

: @1 m) Z& o5 i+ \set trade-record-all n-values people [(list (? + 1) 0 0)] 6 y' y' N/ [* Z
1 ~" `: `0 X: w7 p4 Q. X1 W
set trade-record-current []1 I' x! [+ h6 `2 Q& ]( i
set credibility-receive []
, `- F" g, W+ vset local-reputation 0.5( K/ |# p0 `7 w$ y
set neighbor-total 0
5 w& z7 M' r! b! V0 ?' oset trade-times-total 0
' ~3 O/ q( A- Y6 o4 _set trade-money-total 09 T- v! B! f4 X
set customer nobody, l. ]; W- p$ z% Z: L- }
set credibility-all n-values people [creat-credibility]
6 f- L$ [9 }4 }5 [4 q0 t1 Dset credibility n-values people [-1]% ?: b  o. ~$ n6 O9 |
get-color
, Y5 j0 h6 S* F( Q; j- H2 P
" D) R9 h* {; I/ c& E
end4 a# Z) K" V  [3 }6 b8 K

1 N4 |& i# d7 \+ P2 @" S  p7 m: Qto-report creat-credibility
! l; t" [( c9 u7 z8 q. [report n-values people [0.5]
6 G, s7 b. g5 P$ g& @" vend
7 ~: C7 ^# b0 y: K6 N0 _* ^+ f$ v! L$ s5 D5 t
to setup-plots
& ?! L. V7 W# h9 Z0 b( E: Q6 |' b/ }/ w6 ^$ s
set xmax 30
. c  \6 A9 c/ s. X' k- b

. ?6 p$ C0 @: g7 r+ T) p1 Iset ymax 1.0

4 I. I! O5 O: N" I& k, j' T" U1 ^! }& j% y* M$ K8 {- W; k! A2 w
clear-all-plots

3 d9 Y% {3 |: I) J6 h) l/ S: K2 d2 q- c! ?1 B, ?
setup-plot1

5 e: {  P4 v/ \: w; r: N- Y& T- b. \* G
setup-plot2
) C. W' _1 b5 x7 W: H: T: Q7 U

2 V2 b0 L2 ]. Asetup-plot3
4 q; _3 L, i  z4 a- x: `+ e
end
! _6 |- v8 ?5 C/ p9 z4 i
; |& U1 p' P, W5 U" O;;run time procedures
, B+ J! T2 L/ e' _8 `( E! V5 S  q' D$ d) h0 e; B) S% |
to go
- {9 `3 V2 T+ E. S2 k
" n! E8 p- ^# _7 U9 T( Z( Dask turtles [do-business]
/ a3 u: G* T0 u1 J1 E5 a
end
3 x! E1 S9 {+ _2 K' P% q( a% o( W; [" v9 w$ A6 U" {
to do-business : \/ d/ m, n1 \5 b& P
3 n! e* A7 G$ ]; d. ^
% P8 l; ~6 A6 |, X
rt random 360

, |# V( t, w) d8 p! d0 O4 a2 a
( g1 c( A* q. q8 B4 D1 bfd 1
, M6 E) K7 Y7 {# L% R

, n  m. w6 F  vifelse(other turtles-here != nobody)[
, M9 _! {" }1 r& D8 N; a8 l
: o4 l  w; Z* e7 u, ^6 m1 o
set customer one-of other turtles-here

0 b; j; v* q2 H) j  t/ u5 a, l& l2 B- B: ?0 [
;; set [customer] of customer myself
. L! |) e- E! k& J, w
/ N: m3 a0 w$ ]/ c+ E
set [trade-record-one] of self item (([who] of customer) - 1)) `+ _9 [% i* j. }6 t) r# e$ g$ {
[trade-record-all]of self4 C2 a  H4 K9 B/ z( [
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  J- z: t: ?- }7 p, @, ~' |

, d# W6 p7 m7 T0 M! x# n7 o* ]; \set [trade-record-one] of customer item (([who] of self) - 1): W" t8 T/ T; i4 R7 O% d' `9 A; Z
[trade-record-all]of customer

7 D, m; S3 A" m- _' N% H) {( ~2 F$ g6 f, [& z; e8 d! v
set [trade-record-one-len] of self length [trade-record-one] of self
( W1 Y) s5 X# T0 k+ P

4 H/ S5 m0 G7 p, q" s% D& bset trade-record-current( list (timer) (random money-upper-limit))

3 p* |( k( x/ j. S' y; |2 ?, G9 C3 G9 g* r, l, w3 P) O0 ]7 S
ask self [do-trust]
. F2 B8 i4 |; K4 R0 S4 I;;
先求ij的信任度
" M9 K+ @- O- z6 [: V" ]
* E) j% S! V- W; Nif ([trust-ok] of self)
6 }" e/ d( V' r$ a0 M+ s% v;;
根据ij的信任度来决定是否与j进行交易[
  S( i6 ?4 W( x: a9 D  w% p  |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 j' J$ k5 v8 Z' y2 Z0 z: n, r' G" _, p. i2 L7 {: [
[
7 A; Z8 ^+ i5 `

% ^1 t% O7 Y, Y- L- H4 q1 ]2 udo-trade
$ c2 b2 T  s2 \$ A% E

! R3 @) j" u/ qupdate-credibility-ijl
# H) }8 {; r1 b) R) E+ V; j

, D# w0 _# f+ b0 J, Cupdate-credibility-list
5 F) h1 X" [0 R" A* ?/ C
6 m: N  f" B) r- o0 o
1 j3 \" G9 Q1 Y8 W$ R& [
update-global-reputation-list
5 {6 v0 y0 i6 f$ r( |) [, @
3 H3 ]% x3 a: y2 ?, }
poll-class

+ G: W+ R$ E: `, O( Q' I) E1 V
$ e2 |( J- b6 `( F" }% x$ M+ ]get-color
$ N! u7 G' h9 h9 ^
% a$ X0 Q# m) M% S+ e1 b6 M
]]
3 g0 z: i1 v. f2 g' H" R. R
6 i7 z" _& r6 s8 k$ n: J/ u;;
如果所得的信任度满足条件,则进行交易1 T) F  h* \! c3 b1 l

0 g" L* J& \' }: s1 i2 f[

  `; U% _% ~$ _' K) b1 Q8 V% U
5 `( ]0 E& w! E( z) H5 p# `rt random 360
- D8 s$ h# f! Q  ^7 g- Y! c

% Z7 @+ h2 P& s  Wfd 1
# _; k6 }3 j" W! [4 j) w; D
3 r5 d9 p; g* r* ]/ ]6 \8 u
]
0 [' O. Z% `8 }  ^8 e
+ E, J' J( @2 T6 y: S) m
end
! Z) s5 Y$ J. H; o# J* [
* i2 _0 }6 Q7 Y
to do-trust
3 A# L, C4 j* J, Z2 Pset trust-ok False
& C; Z  k( i, L/ h5 q  Y
: t% L* X% B# J# w8 v
% Z/ w- K' H) T- Y6 V
let max-trade-times 0
* L$ v* C  u1 g3 c0 K0 p4 rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 {6 g: l# C5 L% C, E3 Slet max-trade-money 0
* x$ i* I% n! Z1 ^, y, f, A4 cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' x" B8 v2 ^0 w# N
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  A+ D2 g: K( ^" I

0 d- u' b2 l. h' e

: ?6 L8 c) F5 W7 j+ ]. `get-global-proportion0 ?* j) X6 V; C2 M# ~5 ]2 X+ \
let trust-value5 X3 K2 x! A: _7 V" U; R( Z4 ~- S
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)
! `3 X$ p* f, x( p' h% I+ @& p
if(trust-value > trade-trust-value), p/ y5 v/ w  t8 |
[set trust-ok true]
  u* W3 e/ V7 S" Q% e$ E1 \# ]3 kend
! N$ b9 L2 H: H% e  e* g6 u' M7 e9 m) m* \( S3 @0 k7 X" {! \
to get-global-proportion
# E. y7 k( o6 z# k( yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 h0 M. d6 z) k$ Y
[set global-proportion 0]
0 c( _; g, G* A5 U[let i 0
4 z7 \4 b' k7 \7 p- F, ~' }let sum-money 00 y2 R' Y  R) E# Y: {$ S
while[ i < people]; c+ K7 I% N9 q: j
[
4 [) q' d* k+ f# }2 s' |6 L, ~if( length (item i
. [0 R6 T% X9 Z6 F# H/ D. E[trade-record-all] of customer) > 3 )

3 ^9 W' o! R" L; E& c% ^; W[
! A/ F% S* `$ P2 L7 wset sum-money (sum-money + item 2(item i [trade-record-all] of myself)), F3 W( h; i  B# O" f
]
4 a, o& H* c# B$ w" m' g! R, f9 s]
! D& H- U" k: m2 xlet j 0
& \& R# G) |% ]let note 0
/ \6 ^( u, f4 V: w- @' L) G/ M' ~0 uwhile[ j < people]7 q6 J# T6 t: P- k( C& u
[: l- o" u9 r% Q6 F5 r& s
if( length (item i
4 N* @+ x* c7 e/ ]* Z[trade-record-all] of customer) > 3 )

4 r5 A' g# E$ T, W) q+ D. t! s[8 x; C9 q) q! S1 L) s6 p! m+ k- A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 L, ^  x( h7 i3 ^' e  j4 W: b" E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% ?. d4 X) P7 v8 @
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 s7 M9 X# J" w2 ?]9 c8 p: s# G# n+ H* w3 h
]% D0 S" J. t( w3 {
set global-proportion note& ~3 A2 ~3 J* L0 c9 t
]* _1 _* h, Y: P2 i$ b* H* l7 }2 K, X
end
2 ]: }+ I1 f% a  }* m8 q% V# l
/ V& ]6 A. l' V/ Oto do-trade
0 V; j7 _& v9 |;;
这个过程实际上是给双方作出评价的过程
  k: i" G$ m  R* Y0 _# H* J0 gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' {: t  `  h. @' X5 r% ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% x' u8 f6 V8 _' }1 K4 D4 Eset trade-record-current lput(timer) trade-record-current
  Q. e# d8 ^5 ^2 }3 t6 l3 e;;
评价时间2 c9 F" Y( R$ G6 y# N/ |& g1 a' Z
ask myself [
7 m. G7 L$ {$ T1 s- Pupdate-local-reputation
! k& R* Z: Q6 I' P3 nset trade-record-current lput([local-reputation] of myself) trade-record-current, G# B( w# ]0 k! F. r: O
]% M6 [% N6 m6 i: G  G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 k7 K+ g" b5 j3 i* o;;
将此次交易的记录加入到trade-record-one' y( {6 m# V3 J0 @9 k
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) r0 s8 j! T' ~+ b! z* Zlet note (item 2 trade-record-current )
# e  E/ ?* m6 d8 X+ zset trade-record-current
* N+ `3 Z; g& ~1 X. z% k1 w# Q% r6 d4 H(replace-item 2 trade-record-current (item 3 trade-record-current))

. v) Y; o4 r- ?, t5 _2 Oset trade-record-current
+ [$ t# l9 E7 y0 M- Q0 B(replace-item 3 trade-record-current note)
8 s+ a* T4 m( m& d3 d: H* L+ u8 A, p$ y5 ~

- X% x! @$ o0 l; S( I4 {ask customer [
; Y' P0 m: @0 w* {- f' Hupdate-local-reputation4 s) Y0 i) O0 o  }& a& q) o
set trade-record-current/ O* m! X9 n" B' ]
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. h' k$ a/ M7 L0 ]& V, S6 U
]
1 |+ S* p/ X* _% {# ~& m- o# @# }
& F  t  O; w2 l1 C2 m

5 T. A( e4 G. W- }1 Cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 q$ ?5 }3 l2 K0 Y5 z
9 N# A7 r$ L! z* G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ g' `3 k7 l" f1 ?' ^;;
将此次交易的记录加入到customertrade-record-all5 D. S! x1 \' s3 C
end
  }) E" k8 w- `7 l1 ~
1 B1 ^; B0 ?% _2 p4 I7 ito update-local-reputation" `9 }# _+ U- k- F* z- p( b
set [trade-record-one-len] of myself length [trade-record-one] of myself
+ L+ H6 I0 a; J0 i7 a4 Z: ?# x7 Q
, G: o+ V6 O  K0 R; T0 N1 I
' A1 }7 z) k" v0 y7 f;;if [trade-record-one-len] of myself > 3

+ K" j4 Y+ k2 Zupdate-neighbor-total
- y, i# S+ W/ K: a6 g; t( Z;;
更新邻居节点的数目,在此进行7 I! @! F0 W+ v0 L2 Q3 p
let i 36 {. ]: x( `* G+ W+ z- ~
let sum-time 02 I- v9 W5 y3 M
while[i < [trade-record-one-len] of myself]
& s/ E8 |3 J" B[
- v* s! h* z' }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% t" \  g3 m6 d0 \5 E6 H" n& l6 k
set i
+ ~6 d: J* Q  E- Z5 |( i + 1)

2 t0 R( `. z% g$ r4 V* q1 m]
1 l( f+ ~  O: b( Y/ I' glet j 3$ r- P$ S# h" K6 H
let sum-money 0
* d. c2 j' X4 j+ V& r; vwhile[j < [trade-record-one-len] of myself]
" U0 H" _; u5 d+ @" P# K9 b% E$ h[+ N! s! r* b5 c/ k
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)0 o/ A. U: c2 K/ q' Y6 ~
set j
/ `2 R, _% Y4 ^/ {( j + 1)

5 a: w+ {) K7 W1 z% q6 F]
( h4 h5 X3 u  A6 K& Slet k 3; M2 ^; p) a) `; U
let power 0
  X4 @' l5 g8 c5 a, vlet local 0
" h7 l& Z) `7 [0 Z' g1 I1 Jwhile [k <[trade-record-one-len] of myself]! T5 x( a, x& e7 S! K/ U; j! w
[
5 M' p' Y% p. f1 n7 ]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)
$ V1 W- M+ p- W  h5 }' Eset k (k + 1)
& e& D8 j" d+ J6 b7 [0 n]. s0 b; }9 J! p
set [local-reputation] of myself (local)
9 a7 ?9 l  q4 h9 p4 Gend5 O$ B* e8 f+ n' s" W7 I

+ W  q) K% e& h! \8 zto update-neighbor-total
! v2 k  ?. Y5 P7 j% L9 c- E* f3 h# }2 z5 L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 w$ ^: D/ G' I' a0 e! d
6 C8 r; K/ L" s5 u% W* ^/ E+ c
" ]5 n( ]  c' b. Q
end
% ~  k3 y% d1 i- r5 x9 i4 Y2 ]' V% v
to update-credibility-ijl
' I$ r" H! S! b4 Z+ a3 I" q' O5 `. i# J0 F" Q0 k* ~1 {8 F
;;
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。1 @: f4 r3 Z1 w  U" F6 z. Q
let l 0
. S7 X7 Q/ F+ Jwhile[ l < people ]) l! F9 t8 P; |" F- A" `& e4 ?
;;
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5 j3 e- e9 [3 I+ [* E$ I
[4 v& q$ o6 q. }0 q9 r. P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" v: K! W6 E/ R$ l. _2 X. `if (trade-record-one-j-l-len > 3)+ U, [+ w% r: E5 y
[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
5 }% l" E" ]% U( C- Vlet i 33 U7 F8 T- c% K' w& [
let sum-time 0
) E) H7 Q' E$ wwhile[i < trade-record-one-len]0 _. ]( T# ^  x/ ?5 n# `) l
[
  w9 L) B! @' r& F/ r5 c8 G5 gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). A% H6 L6 O9 T5 z
set i
" Q' I$ m" C/ P$ ^" W( i + 1)
+ O, g3 ]& {0 ]- q! F8 S# L1 X
]) R* F+ W8 q! h
let credibility-i-j-l 0
, A' p; K  K9 _% o;;i
评价(jjl的评价)# u2 k. E! n& L1 m. w
let j 35 c! m, h0 r: i- a6 ^7 k0 Y
let k 4
; y0 W8 D' y( k2 q/ }while[j < trade-record-one-len]
% l2 V9 H* t% P+ d& I[' X8 }# V% L: a+ x
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" b6 `0 r9 j% @4 D5 f; n$ 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)4 ~4 F0 W# l# y0 k: Z* z+ o; o) g
set j0 J- R7 U" d' m
( j + 1)

* ^! J# h* X, S3 o! l]
% e3 Y# {9 i5 J+ ^) s8 G' J9 b$ Qset [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 ))
) o! e$ o$ n1 G% W& _
; f+ G: T0 d+ {0 p$ E

+ Y* u' ?3 @( b. r- \5 _: Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& @4 U5 x8 V& c8 B0 Q9 N' B5 I4 V( A! U
;;
及时更新il的评价质量的评价- B# i  R! K1 s! y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 U, B) Z) t& P$ Q
set l (l + 1)
) }/ Y9 ^  C% O]
# _+ }+ n( h+ T4 b( d9 T: y: D2 Iend
. {5 G& S: w4 D
; N; P. i  h. p. p; j8 S$ p8 f: _to update-credibility-list
, b7 V7 ]% F) Xlet i 0
0 e: G3 J# G0 t2 I3 I1 Mwhile[i < people]
4 w7 w! T8 P' K2 p' U' T( C: x[
- q" S9 Y+ r. f- wlet j 0: K5 ?. B5 `7 W
let note 0! t  _- m4 V! v
let k 0
  v' X5 i2 E/ L8 |! B: T;;
计作出过评价的邻居节点的数目1 o( f9 u4 ^8 M" Z3 {
while[j < people]
  F# [0 A+ S; G" R8 N. w[
* j4 Y" \# ~6 J1 J+ Xif (item j( [credibility] of turtle (i + 1)) != -1)
* o* e" @$ E! G% R) [;;
判断是否给本turtle的评价质量做出过评价的节点
: r; h, N) K& m* [/ A[set note (note + item j ([credibility]of turtle (i + 1)))
; e' p, _$ G: W- }* W;;*(exp (-(people - 2)))/(people - 2))]

3 P  C4 W+ B$ wset k (k + 1)  T& @7 H8 O8 ]
]
7 Y3 v; @' d, a" o( mset j (j + 1)5 z$ L7 q% l; Q7 V
]
* P3 f. k5 w+ C* N( Yset note (note *(exp (- (1 / k)))/ k)1 s% j" S, ~: K& h& @
set credibility-list (replace-item i credibility-list note)8 `, u5 a* w( A0 X+ v2 O3 _, V7 o' U4 {
set i (i + 1)
$ h( d! [4 u" ?& [5 Z4 [5 x! Q  c+ a]
4 X' s* d" D/ U! F: C" yend8 ^' [, e9 Z7 ^0 a

9 V2 w3 v3 K+ N; h6 m  ^to update-global-reputation-list1 ]/ g( Q( K$ g  x* {; }4 W
let j 0
+ `: K$ j3 L& P. {9 Zwhile[j < people]- w7 f# Z7 I) d( B- |: j: Y6 y
[, |& F% u5 W% K' c0 m  J
let new 0% I) s* S: H) X3 A5 q7 y
;;
暂存新的一个全局声誉
& d3 n% \8 m2 g. H; @1 J* ulet i 0
- C# R( g+ u0 ?' ^  tlet sum-money 0
$ F; `6 N% w( f  @) X1 |6 clet credibility-money 0, V! T( b; f! J: R% {
while [i < people]
% t8 I  _( h9 e# s/ q' H" d6 y[, W# n8 J% v9 Q- U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. ]+ Y  C) o. ^; m- sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 ^0 ?& N3 W# _6 [5 f' p, ~
set i (i + 1)* n- v- H* U, h. [- |" Q
]
* a" ?+ I( j+ _let k 02 A! d4 M: d* Q$ W$ W0 x
let new1 0% C, s7 |1 M8 a: a' z1 E5 C& z0 {) g
while [k < people]3 h/ L0 B) u! b$ U
[! h5 G$ D" ^" w8 w0 |% j
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 v8 P2 \4 U2 |0 z+ g6 m
set k (k + 1)1 e. q% c# t/ N+ w& Q7 A9 s
]& f6 Z& _, U0 K+ ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # z; b; w; s0 `* M" k
set global-reputation-list (replace-item j global-reputation-list new)% u5 r* @0 I; |2 O8 e) w
set j (j + 1)  A: C' K& R: c
]
& w/ \/ f3 [. eend9 B+ C: e" O8 d3 q6 {* G

. C5 j, b; k6 j% S" D
" D& T1 _, b( z) h" x
% [" [2 J* _1 z& j$ Eto get-color( \9 X- }& U, n& t: P1 D# W
: B+ \3 ?; E, g  f
set color blue

4 P  j, o  `& r/ w" s  Q6 \end2 K  Y0 r) l; f& ?5 n% c

9 A  d/ ]1 Y$ y# R( Rto poll-class; w5 }2 e" k6 C6 t" ~  y9 n# K6 O
end5 q' A- c7 X. M# u
; C6 J9 h; |3 Q, D
to setup-plot1
! @; G. J5 E" m- W% l% I. j2 V: b( P& [8 W" M! ~
set-current-plot "Trends-of-Local-reputation"

# l" v) x" k/ j* x2 ^) \* d  @3 T
set-plot-x-range 0 xmax

2 k  O9 }! A/ G% }  T$ g' V" s
, T" C/ _) f; @set-plot-y-range 0.0 ymax
2 q1 a' g+ N7 g( B" a$ K# @1 l
end/ b" ]$ p. L8 f7 e2 M( {$ B
2 b: \# |  y4 F) d3 u
to setup-plot21 G  z3 G) ?: S

5 h# N, ^& u$ t8 N0 x& eset-current-plot "Trends-of-global-reputation"

8 t9 ]8 t8 K6 O" Q9 ^) e0 O$ O; L$ r& r# i
set-plot-x-range 0 xmax
3 @% U& c1 d. r2 R9 w& h, O

( m' p, d& C# A, @) uset-plot-y-range 0.0 ymax

* _8 ^9 f" \* K6 Q% wend
5 x: Y( [$ o! v: L' \* o
3 W, B+ |% R, V; Zto setup-plot32 x1 J7 P2 w' j! b* f

# l8 @0 I- C* U3 B( H4 Kset-current-plot "Trends-of-credibility"

# p) c/ [( }! l5 S3 G. _9 L" h/ J
set-plot-x-range 0 xmax
3 a% e9 ]" a1 q8 I4 X$ B
2 q  K3 M; m6 }( N0 \
set-plot-y-range 0.0 ymax
6 ]* ~) Z! J( j/ k
end; E2 t1 N" O7 Y7 n( I, I" U
. a9 x$ S( D: M, q
to do-plots; J0 N$ _3 u* z% k' ^  C( `
set-current-plot "Trends-of-Local-reputation"
8 s! |! g; _+ c! }set-current-plot-pen "Honest service"
0 U6 ~; T. X' Bend6 Q/ l0 ^+ {: P7 O! }
+ d; ]' r) ^0 s* E
[ 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.
5 |, I* D& n8 f2 c/ [  g9 C
. i, ^# G# h* h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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