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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:
3 N! q9 O: d. k5 Jto do-business 8 U4 x( J" F" `+ h5 T
rt random 360
, b( z9 p% }( I( F* a fd 1
: k; {, h2 z2 |/ L9 k' G  p ifelse(other turtles-here != nobody)[5 l: `/ d" |: A) B
   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.
& x9 G1 w, I. B1 z+ p   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 M( t4 |$ r$ Z/ D& x6 Y8 N& e' d+ j
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" P' v% H9 P8 I7 U7 L   set [trade-record-one-len] of self length [trade-record-one] of self1 t3 b) n- `# r
   set trade-record-current( list (timer) (random money-upper-limit))
! c2 L. @8 }7 }% R3 L  p* W5 m) x% B+ [2 j/ S  I% S
问题的提示如下:: o1 K3 C) y% o

5 W3 b$ k% Z$ {error while turtle 50 running OF in procedure DO-BUSINESS+ G5 x' Q1 i7 S% `) }9 P7 [( d
  called by procedure GO3 r6 e+ X, _/ M7 X- r$ i) u. W
OF expected input to be a turtle agentset or turtle but got NOBODY instead.) Q! B" Q; f- j) l. }
(halted running of go)' V5 f( L' u; P+ H' R8 x/ j
) ?8 U3 ]6 l4 W- V: e, B. x3 l& ~
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~~
; o  E0 n7 Y& q- }4 y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
9 t4 M7 Z# t, [3 \* K1 Tglobals[
, \1 ^' b6 A  Q9 m1 c5 E" y" J, X( yxmax
% _* X* I' M* \" E$ w& {+ uymax, f3 s0 T% T) |" Q+ v( {
global-reputation-list2 L1 J7 R- `. W" G! r4 f5 J
8 i7 h. U( h! N0 v3 z7 x9 \
;;
每一个turtle的全局声誉都存在此LIST
& }( f; B6 l$ @4 pcredibility-list* J. k/ \+ T3 D  g# a1 R6 k8 ~$ h
;;
每一个turtle的评价可信度
& A1 ]4 u* u0 ]/ ?honest-service9 N- G+ U; o: F( D! B+ M
unhonest-service. F7 \# \6 Y' z: _) p
oscillation0 |: y3 E  L2 ]* x% }- j( k! U& K) R/ f
rand-dynamic
  l+ C  }& e: G# I" h9 D3 _& y# O]
2 |4 a# S8 f0 @9 i$ r6 _, S8 g) b
, F/ s+ d* T: dturtles-own[
0 M# T! x" s: L  _$ R8 Ztrade-record-all3 F  e: a& N# g
;;a list of lists,
trade-record-one组成& n4 I+ x" G/ L3 b! A, K, H. S
trade-record-one
7 f. W' r8 B: E4 C, O  `- c;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  _! b0 u! c, B& k
+ u: l% M5 O3 M9 |
;;[
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]]
7 G* w" W4 b3 Ctrade-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]: ?4 o1 f: o) M, C; Q) Q
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
9 x* y* x3 G- b6 ~/ ]' i8 gneighbor-total
/ x; @1 }  D+ ]9 i9 ~;;
记录该turtle的邻居节点的数目
2 @1 ?) p! n6 V( a2 N$ ptrade-time" |+ Z/ [6 _0 Y5 s6 n3 S: H
;;
当前发生交易的turtle的交易时间
7 Q7 {- A5 ?, P8 q# A8 k" |appraise-give' O8 l0 T+ b' e3 `. N3 W
;;
当前发生交易时给出的评价/ w) W- W2 Q8 n7 T6 W* A1 y
appraise-receive7 N+ a2 f1 J2 E( R. S+ G2 l4 R0 |
;;
当前发生交易时收到的评价
: I3 t! A' d4 d, L9 ?7 Aappraise-time! M- r' M; Z# F( D- n" J& ~. [
;;
当前发生交易时的评价时间
. [4 S0 [) b6 C) e7 vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( [: m# a& V* A. l' g; {  rtrade-times-total
0 F! V0 t0 m5 F+ [;;
与当前turtle的交易总次数& B2 H% r* w0 H
trade-money-total- T8 N/ v8 q0 _' J! i. s
;;
与当前turtle的交易总金额
$ @9 e- c. N$ B, N- Ilocal-reputation. J$ j' G) f4 F9 z: T0 o/ ~, ^3 [
global-reputation
5 z. `) N2 f/ n; e1 I% x/ y  R' acredibility
* _0 @7 f& Z( w+ a" c* Z% F0 N. e;;
评价可信度,每次交易后都需要更新
  `0 s+ q& F9 L' O( i* X4 {credibility-all
9 L' v) V  F% D! e* P; Z6 G6 q;;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4 x5 ^+ H# z* w. P& @
! M! K  G0 S3 Q& ^; a4 a( H
;;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0.55 i! R5 n% m- @3 a
credibility-one
3 R! C0 \+ o0 @1 A;;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  N; M& O' o8 t& L* L+ J! O0 r
global-proportion
+ e* s# @* q* r6 L; Vcustomer) f6 \: I$ J! W+ h
customer-no' c, m: o) B. H/ V2 Y3 W4 u' G
trust-ok- H9 }6 T/ t3 r% S; k" y( p  I
trade-record-one-len;;trade-record-one的长度: k4 \! }% o( J, G, @9 v; }
]1 N& S- J/ J; P

- u( b& U& Q4 G- k;;setup procedure
, M  O+ G+ y/ M( i7 d
. V) W0 D6 ~: B8 G) }; Gto setup6 O+ ^& U/ A$ T. ^, ?

" P: n7 e% o* L" K' y, A6 Wca
9 q/ V) U( n! O7 K$ z4 p9 R# F
/ ~! S% ^! i* u; B
initialize-settings
2 a2 s- S- a' J; F7 m! g
6 s; z: b! c  T( l( ]. P
crt people [setup-turtles]

3 X% m3 c9 N, r5 x5 p" p* n5 v8 f8 W+ u& n
reset-timer

! T# t$ s, ]- X0 A& q% V$ y/ p  a7 A
poll-class

( a: Z  s$ O4 _0 g$ ^+ D# Y! d/ L3 G  L  D0 O: ~9 r" ^
setup-plots

$ r( G3 J3 M0 f' M9 C, N4 @/ P1 \4 V0 j* Z" x7 D
do-plots

" |& r, K9 u* N9 ~end' Z; Y& ^, b( u' V
  O' R/ ]& u/ L6 [3 {) f
to initialize-settings
$ n6 L: @+ Y4 a" }0 Q0 Y! b, p" m, n: J
set global-reputation-list []

) f' X4 d  G' ?7 q$ `
4 B7 \9 u8 \9 [3 t/ n8 b3 dset credibility-list n-values people [0.5]
" o) g/ S- i( z7 m, b. ~
8 s0 q( D. X! n
set honest-service 0
: S0 q6 ~. M+ z2 f5 n

! a$ |( Y1 x, `! W' Z- Fset unhonest-service 0

: d. I" r7 R) {* u: c( k% z1 O, O' j, C7 q) {, A
set oscillation 0
2 k' e1 u7 ~9 [  s6 G6 g  R: Z
9 L. N) F% i  _+ X# t& t7 Q  A
set rand-dynamic 0
0 D/ v" E* u; V
end8 b& B) a: ~* D' w8 w* Q5 H

1 _* B/ Y: Y+ t) t) s6 jto setup-turtles ( w" f! d* C. o+ B! O; G/ z; ]& Q* u
set shape "person"6 R! H; W( Y# [8 \! s
setxy random-xcor random-ycor: c; [6 C) L) K' k
set trade-record-one []) z' |' e! w2 i2 Y  u

1 S1 Q6 x% o' I" A' Z" Iset trade-record-all n-values people [(list (? + 1) 0 0)]
3 U/ V% I& ^( @* {# f  {
( c9 ^" I+ G' \; {; q% X& _
set trade-record-current []* z' y* f- R8 V& P% s4 x
set credibility-receive []! H, V/ _$ V6 P/ e- k1 n
set local-reputation 0.5! r9 X; h9 L& Q' Q
set neighbor-total 0( U9 R7 a* s; V" J, ]- C
set trade-times-total 0
& I9 H) S7 ]2 I+ mset trade-money-total 0# u; a+ P& |/ F1 c! k
set customer nobody$ h3 j. \* h/ I) }- g2 V7 o
set credibility-all n-values people [creat-credibility]
/ W8 K$ L" q+ Y" k% V* yset credibility n-values people [-1]
8 G+ I# h+ F& [" m7 N) Sget-color% `5 g2 A4 \& X/ c% M' N

% r' }$ z5 h7 \+ rend
- O* `, F# Z; a4 P3 l: u6 W! P: O% R- [
to-report creat-credibility
' {* J9 Q, F) ^5 h2 k* Xreport n-values people [0.5]
4 a. r3 }: a& U0 r$ }- Rend, H' R. q, L$ u
; p  y0 Y* B- s& t
to setup-plots
8 A- L: S1 C6 ]3 o: ]
  X) O, h0 y4 Uset xmax 30

8 G% `! S1 z: w$ C, w1 m& l: q2 Q. i( E" s
set ymax 1.0
& G% l( d2 \4 s8 L/ l1 F

3 H$ M6 j5 {. T7 t* u& fclear-all-plots
$ b/ E* N) o- L8 e7 ?# w* v

3 k  ^/ B, o$ W) Gsetup-plot1
0 S/ p, X% L' \$ H7 a
% z. B* f' X  X7 ?' R
setup-plot2

0 n5 _0 X7 }' w0 P9 u! U2 ^
1 W8 {+ Z4 [, _" N* p. @* jsetup-plot3

* L* q8 {0 ]- m( aend/ f  b4 {; B* o0 B

6 i/ V# U1 t$ }8 d# K9 x: S% x;;run time procedures
0 s' I8 L; K  S% ~2 Q: O! A' q% \0 B, Z
to go( c7 a! z* p/ r% U9 w8 J
9 l, P2 y& p2 C* h
ask turtles [do-business]

: R/ V8 Z6 M4 S9 Cend
: U5 T6 p' a* d& g4 S, _1 m# [" u( J0 W1 \8 `
to do-business
8 q- d  k1 q( r( \

" u, q! Y; p' h9 k# I- [( B3 h
, c6 R  o9 n; P8 \8 wrt random 360
' L1 Q( r9 U- T" O( n

. ^7 L; f+ [% |* W! d  o" T  _. b" f0 Ufd 1

" n- }* c( x. ^0 V: T5 }" u  a1 b7 Q) }3 w9 Q) |$ K
ifelse(other turtles-here != nobody)[

3 v  P3 s# {+ q0 ?9 M5 m* j9 K! G' b0 L! b/ `, W
set customer one-of other turtles-here
2 v( \  V, W0 [+ A6 C, n6 o  r
9 C9 U. m1 ?+ b1 O- R
;; set [customer] of customer myself
$ k/ F7 Q( D2 n$ I0 P

8 ]3 R" ~/ [- L3 X# H0 tset [trade-record-one] of self item (([who] of customer) - 1)/ |9 r3 b; C) Q( E* ~& L
[trade-record-all]of self
- J5 b2 @+ r! J/ N;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 _1 ~6 G& {. r# b/ y/ n
4 S4 t4 H. w3 k. G* Y, j3 U( P
set [trade-record-one] of customer item (([who] of self) - 1)0 A) y! t# b. x1 B' x- d' C
[trade-record-all]of customer

* f$ m2 n  A' G" h: k2 G4 U3 s% U5 x, j) i* s! T6 ~/ l( M! k8 q
set [trade-record-one-len] of self length [trade-record-one] of self

  w* s" N. g, v# }% m: [1 @' C( t' L7 T
set trade-record-current( list (timer) (random money-upper-limit))
+ Y$ ~5 z9 |. @$ T& }/ Z  }4 d

+ l) V  ]( D' u2 q7 v# ]. sask self [do-trust]& Y! j' a  X- W' I  E( Q' h+ R
;;
先求ij的信任度
+ k' @1 w+ E7 t- f& [; H
$ x# Q- I( H0 R- T/ }if ([trust-ok] of self)9 g1 g5 I2 e0 _4 z6 r' m
;;
根据ij的信任度来决定是否与j进行交易[
3 b) c% b8 a& V% u4 o/ Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 w6 v! S0 b0 Z
0 d& b- K& K0 P/ R, H5 Q. g! o
[
% l( x9 v" N! ]0 O: W2 Y( L: {
" V! U6 Q" V. T
do-trade

. c" a% K8 H9 n& q/ s" u5 c. J& o  Z# U9 w) r
update-credibility-ijl

" r4 \$ s' M$ G! Y' d/ v6 O, s/ @1 ^) X5 U2 e
update-credibility-list; [4 D( \( n6 s: s- N4 ?; {: _8 C
$ {; v+ S1 N8 b/ @! m

% {7 X* i- b: {; V7 k/ d9 uupdate-global-reputation-list

2 g: |  Y  U2 r. V+ _4 @: e& s! v7 \1 c! |$ {* d9 C$ {
poll-class
6 j* N7 v/ b8 x

8 }; _; ~$ ?" L! c, p* Xget-color

4 l* N9 @7 b6 {& b7 T  [; v7 ~2 J- m" M; C6 U% K7 @& ^3 w4 `
]]
( @  y) y) ?3 p+ A1 x! i- N
( i$ }+ m1 o7 w3 @7 {/ o;;
如果所得的信任度满足条件,则进行交易9 [& ~& B% a# P: @
4 |" p) w6 {0 v" J
[

6 e7 Y" P3 D( I% ^: x% C
7 v+ m4 Y/ [* |8 j* e- Xrt random 360

. {/ _) X$ C( |6 U% Y+ l! k
9 T% V6 a: U5 a- S! _* D5 Gfd 1

# ?! \2 [( C* U8 L- Q" N; F. M! i& }: d+ _1 ]7 i; O5 G  h. y
]
8 Q3 X: P( t' A4 Q- v1 c
5 ?, q% Y4 {2 _( Y
end
' a; w4 k, p: C3 P, w/ S

/ j/ u- C% R( L6 L# Rto do-trust * j4 q/ U* D' `5 F
set trust-ok False
% R& D. |! M' [$ D5 i9 T: F
/ p4 H* i+ q5 v% X. m! w* t

1 I$ |+ k' K, J( ^& Slet max-trade-times 0# ?$ E: v! N5 S) g) J2 k7 u+ f, Q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ a! i1 z' U% z5 O4 L$ Rlet max-trade-money 0
1 T  D# `/ s7 X- Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], @9 B/ v) W2 U, J- _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 v# H6 h- S' ?
6 u) ?8 _& W( g' E, U9 o

$ {& x9 [9 b6 Y, H( y# K) ?get-global-proportion5 v! e( e* i! r
let trust-value7 @9 \% z' j# ]: k8 h% b4 E0 B
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)
& h8 [: w6 \7 t! Q* t
if(trust-value > trade-trust-value)
. O0 j! s! [9 k% u, s; Z[set trust-ok true]/ a+ e" L: i; |6 Q
end
$ M/ \4 S) G+ `5 {5 w3 q$ [
  V/ c0 }9 q# T& b3 X0 u+ _! {) ?# sto get-global-proportion
& n7 D0 H5 U9 qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* t, d1 q4 g- v- M# J3 w8 Z
[set global-proportion 0]
" a# Q* n- F  ~" O- I5 \5 X2 |[let i 0
* M6 x2 Z9 }$ r5 M; E" o/ \* glet sum-money 0
0 Y. q/ m: H% I; Wwhile[ i < people]) [- L6 \0 W, J4 `
[% ]) T* B/ m" W' D# v. }
if( length (item i
9 h/ x* D" J. s1 y# l% s0 J[trade-record-all] of customer) > 3 )

1 b- s7 U  q! Z! ]$ I4 s! I6 o# w[) D3 a7 [2 |7 u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). E$ F" ~' _. F; A# d7 d
]
' \- g3 ~7 a" u  Q$ c: m( []
' r7 [2 x7 H  P* y$ O1 B9 I0 Klet j 0
  M0 H3 {8 B7 t) s1 h+ I2 E! ]let note 0  y% G) L6 o- H& F! z% d
while[ j < people]- _9 P$ e5 |8 b9 q
[$ c/ O2 [( b0 k# H1 u8 h
if( length (item i7 Y9 n0 }9 Y! b+ F
[trade-record-all] of customer) > 3 )

1 a, w4 |1 E" z( ]! R[2 X1 X7 M1 n6 S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( t$ v$ _# ]7 r7 [2 p[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 k# s' i" D+ ]! |' h% o# d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; h/ v9 h% V% ^$ V$ W  `/ _- I]
! S8 \" Y: A1 ^9 l0 O4 k]
' S+ E" \) e3 q( w2 p0 ~set global-proportion note
8 B2 h$ T4 o" C7 R! @1 J]
+ i) P0 G7 x8 S5 p, Y( e0 L% b9 eend2 V% D1 n" i% l
) L8 v9 f& h/ T6 h: k8 p6 O- L
to do-trade  {6 Q5 W% q' n7 {" u# i
;;
这个过程实际上是给双方作出评价的过程
. ^  u' V7 i6 oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 B6 t4 E! `7 r% w# H0 ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# {- B  @0 G  ~+ Y7 i1 j+ z) h
set trade-record-current lput(timer) trade-record-current
0 O" ~; u5 F' f% x) T: G;;
评价时间7 n% k" n% g1 q8 K9 X! O+ g, J' ^, X
ask myself [
" i9 n! P/ ?" R4 i  \- Zupdate-local-reputation$ j/ f+ z5 l0 M4 A8 i$ i
set trade-record-current lput([local-reputation] of myself) trade-record-current
  o  ]& ^1 I/ m  d# V) c# q]& D  b3 }* _6 |  F8 X3 O8 P: G  j
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 T  a* L  p5 D+ a& U# T& D0 J+ s
;;
将此次交易的记录加入到trade-record-one; P/ n/ i0 \2 t; [3 s
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 v2 ~8 K. E  _0 D5 Nlet note (item 2 trade-record-current ): j8 \2 d3 A* @& M' y
set trade-record-current! @+ i% W  i  k3 w9 Z4 p* k8 |
(replace-item 2 trade-record-current (item 3 trade-record-current))
" W0 a# Q2 X3 C1 Y# ]3 f9 O/ ]1 v
set trade-record-current
5 q; T" _" U9 ]5 i2 _(replace-item 3 trade-record-current note)
" P% d: {: t4 N, q2 g
1 d0 N0 b  u7 l, l: Y# y! G
9 h' ~$ B3 E3 O4 m! c, J
ask customer [4 s1 d" G0 x+ y. r6 s0 T
update-local-reputation
+ o: C% k$ j  b0 Q/ o: V, nset trade-record-current, h8 }/ w- v, L+ e
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 k) O) N, E9 j' @2 S0 Y# g7 |5 ]]
0 |1 P2 L2 P. o% @
2 f) g! d: j8 h$ _) S
# b! N& r3 [! a. J6 t( E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) I; l+ S; ]3 Q) s- D( q

  U9 G9 m* U! ^% |  S  ^, Rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), j0 F5 F8 v2 c$ O7 H
;;
将此次交易的记录加入到customertrade-record-all7 x/ L/ V( Q. |4 H  F8 ?$ U( s
end
8 E( A4 \7 `# Y+ C  O3 E5 B$ r/ |$ G  P$ t
to update-local-reputation* B/ Y. T9 Y5 s. x2 ~
set [trade-record-one-len] of myself length [trade-record-one] of myself
7 r$ U; i; C9 D) V# f# v
' d. P0 k) T  C4 }* h2 \
: V( M; b, I. ?1 X$ t;;if [trade-record-one-len] of myself > 3
6 A- K8 i2 R) L1 ?, o
update-neighbor-total/ ^" A3 g# R2 M& y2 ~* R
;;
更新邻居节点的数目,在此进行
! J3 z* U# w, a* ?. Y. D2 alet i 3
7 o+ a- d2 X) F6 K  A8 Z, mlet sum-time 0$ u! ], x/ G, V0 k; n
while[i < [trade-record-one-len] of myself]
: P5 B! e  `9 q# l) c, O[
4 r# \+ Z; T  P  I7 [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' ?. z" \; ^# ~! e) V) \( h) R
set i) g4 k" r7 G* E$ ]
( i + 1)

  h; E% H2 i9 D& a- f% X7 z+ _]
5 l# s2 K7 I3 m4 P7 g8 _& A6 M' j$ F& ilet j 36 A  ?* t) {; I* M% m
let sum-money 0
3 D& I3 q  P8 k' n) h4 A$ Iwhile[j < [trade-record-one-len] of myself]# W( z  ?# L/ h9 G
[
: j. V1 h* a# r7 xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 L2 Q5 F; h$ i; b/ Z
set j% e, i1 @- R1 A. `1 F* C% B
( j + 1)
9 G7 Y, M: Q. p6 M8 U
]
' A' A: W! P# L1 ]( K+ x% ?let k 3$ K4 P( h4 E! t: W# m
let power 0' Y6 l! y) t: B; P7 w: ~* v
let local 00 F% B/ d! H, s; a$ R! x
while [k <[trade-record-one-len] of myself]/ e. ]+ N8 r/ L1 d" K6 c, G% D
[7 C/ @4 H2 z- ?/ d: C3 P' a
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) # f! u& T8 n2 d0 b
set k (k + 1)
8 M+ i% d4 [# ?" N]
6 z; `) E! L* Cset [local-reputation] of myself (local)
3 d+ L0 O  _9 V0 d9 ]  Dend
# |1 I1 w: j, z" F8 m% p) ^# ^& x# ?( h+ Q( I: Y  w) P; d6 c
to update-neighbor-total
- `% |3 G& ^& G5 Z7 ~
6 o$ k1 z! A' `. o8 [) U/ Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! T3 p2 D" V; Q! A% O0 }  u& A5 k7 m' j- v4 i0 A+ d( N
7 F# |* y5 g* E4 `0 L2 L# V
end# \* `5 J" Z) }0 n$ X( J: S- B

/ y1 [( R; H) q& w: |4 l3 @to update-credibility-ijl ( H" A& K7 E; `

* ?8 T' m9 b) X0 c;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
1 e4 ~5 W6 e" V. r- N* j/ B) X# A% elet l 0! V% D- j) L; @. o9 W9 m
while[ l < people ]
4 |5 k# p) K- |+ g2 B;;
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 G6 y3 H: [6 c1 M: l, |% ?
[/ M; K+ i( Q; J# \5 K% m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" q& I! E. {. S; s) ^# [. I
if (trade-record-one-j-l-len > 3)" ^+ Q) R! h/ z. K' E0 ^6 _
[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-one2 y/ W4 u/ _  x5 O
let i 3+ ^; [; L+ ^5 F& A3 W7 e9 E
let sum-time 0  k" D4 h& K: T* k+ Z0 R4 q
while[i < trade-record-one-len]
, C1 g( b% J# M2 v) s[
4 x0 O) d2 r. Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). i; y9 \4 G. z: w( I" ?0 u
set i
( q% U. Y9 @" N/ _* C; _7 Z0 K( i + 1)
* Y% j9 w, o( e# h8 I! l$ T
]) G, A7 n, S0 N
let credibility-i-j-l 0
! o7 G6 F, J8 W% T0 q# M3 ?;;i
评价(jjl的评价); O; J3 Q$ o  r
let j 3
* {0 {6 U0 c: Z+ V9 ulet k 4
/ v: n; i4 f& d* Fwhile[j < trade-record-one-len]- Y' Q; l8 q3 U1 B& _* r
[/ I" Q! D$ l5 J' U
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* ^1 n" U- @* G' {$ ]
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)
! J9 Z' D) v! V8 p) Z, z: aset j0 ~0 O3 T5 i% Z; ^
( j + 1)

& X& |$ c6 w1 W9 q2 Q% o. G]
1 }! C( v4 g- n  Eset [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 ))" _# ^* n6 w; D0 ^, a* b

3 F6 C2 D7 @) N5 _, z7 A( P
$ @. L- a5 z* X4 `% M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 \- n4 b* j) A: D% c. Q0 C;;
及时更新il的评价质量的评价( W( q3 m; n6 \4 |
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, V, o  f2 w4 Fset l (l + 1)
% F* f) o; K8 q" j5 I" Y: D. Q! W]$ l& n/ f9 D0 a+ U6 M
end- Y- r  J+ N; z1 n+ r

& }; k, M$ c* Z6 _& @' Hto update-credibility-list
+ K6 O1 m: H/ s" N2 `3 x8 Hlet i 0# e# q9 _7 Y/ L, |( d) `6 T' K
while[i < people]
+ \, H0 R0 f; P! z[: x9 v7 \! m% T6 X: T
let j 0/ d! h1 @$ U% z, n) \# H4 U
let note 0
$ `2 V9 [% c1 i& [" [let k 01 w9 y5 p0 N& g4 F( Z
;;
计作出过评价的邻居节点的数目( v- Y* a- E- ?  u
while[j < people]
6 x* ~8 Z1 B) d% g8 }4 I' S[" R/ E  ~) U! w
if (item j( [credibility] of turtle (i + 1)) != -1)
& y3 ^8 [' o$ H) U- {3 e% i;;
判断是否给本turtle的评价质量做出过评价的节点
. F! Y4 v+ l, m& |, h5 p6 ^[set note (note + item j ([credibility]of turtle (i + 1)))
. }0 j$ {/ w+ I' M' J7 G;;*(exp (-(people - 2)))/(people - 2))]

0 i1 B6 Q! N+ hset k (k + 1)2 @- z: V* O3 }0 i/ q' {, P, @$ t
]
3 o- O$ m' k1 u+ H& R. i- gset j (j + 1)
* x1 R- i4 B: Z2 a( _]  L, Q1 ~9 \2 b7 V2 I4 k. q+ m
set note (note *(exp (- (1 / k)))/ k)+ l$ D- E5 F* c
set credibility-list (replace-item i credibility-list note)
3 L% A& C( R6 e" q8 J" i' @" ^set i (i + 1)$ c% w- g: K/ ~- H4 f# Q5 V
]7 x' [9 `7 k3 J: e
end
# [$ S1 R; d* }+ M! n; z2 |# A' P  O2 p: w6 X/ M
to update-global-reputation-list
7 b( c  ]/ _( D5 Z9 flet j 0- s8 e1 c7 |0 a. s( M- ?( ~
while[j < people]" u* Q& m  Z1 `9 o" c' W
[1 l+ J( L0 F" \% Z; L
let new 0
8 }3 w4 z! D, K' q;;
暂存新的一个全局声誉
% o, S7 L0 N4 t3 r* r! I$ Rlet i 0
5 `, s3 @' w8 L! Ilet sum-money 0( x/ z1 F5 q  q/ F: y0 u# y
let credibility-money 0
7 B! Z( z0 S& u" C# Z; h  Iwhile [i < people]
9 X1 {" G% O  A5 @, D' \% C# y[
1 I4 n! D2 G! y+ _* h! fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 Q$ v& H/ J# y' x& m" G" L' R& t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% y, R/ d/ b3 A8 k- R) N0 G  Rset i (i + 1)
% N; Y* B* }, i' d. z]  W+ N0 T% M& i- H
let k 0
/ K# k* f7 a% |4 E5 J! M1 Olet new1 0
1 C1 H0 L, f# twhile [k < people]
5 N% I: R, |& _+ V9 S  A, `# \[2 t0 A$ q) z) J) ]3 U( a
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)$ {4 \6 Q4 {2 L' W
set k (k + 1)
) J+ Q& m$ V. S. s% K]
. N8 T1 z; {; l3 I- G3 _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- g4 V: h; r& N6 x: oset global-reputation-list (replace-item j global-reputation-list new); a" F4 |/ B* T9 x
set j (j + 1)0 D2 k, a; l9 y
]6 F( D8 J( j  e
end
( U7 J" }# d" I; x3 R( v% Q2 W8 M; u, B& Q3 B6 D

- G4 [- H/ t% F8 }
$ |. }$ Z- c- q* N% Q  `% Xto get-color
' Q- B( g+ @: [6 E& n  |6 A& V' M" q% H/ q
set color blue
- V+ X7 I+ D$ f  @4 a
end
6 n; p7 H7 f" D5 B
' J, _: [" Q! {4 t  Ito poll-class9 ?  Z* T" O8 S# m! w
end
$ f, M/ u0 t4 t! i$ l
/ R  ]5 E( m5 S8 U& yto setup-plot1
, i. v% ~/ y+ X- x+ h1 o+ ~2 \7 Z$ v3 @9 K1 c1 l; t' a4 s! }
set-current-plot "Trends-of-Local-reputation"
4 O/ ?4 x. R4 H; m) I2 i- }

0 l' Z% R2 f3 U1 X7 h. A8 wset-plot-x-range 0 xmax
* j" C5 C5 y1 b2 \& l+ p8 p
8 A4 E( ^* m. M/ B
set-plot-y-range 0.0 ymax

! E0 V' x$ D5 ^0 F& fend. B! }" T) q% z! [& c
' o5 J# O6 `9 J  ~  e
to setup-plot28 f  Z! H9 n4 i% P2 \) `
' `" I. i8 J( _! {
set-current-plot "Trends-of-global-reputation"
* b4 b3 G, W( k, W! l
6 {9 }3 Z! R1 Z. C9 y  p  g
set-plot-x-range 0 xmax
) ^. C! P% X( O. u- c8 I

% s; ^, U- f% V' Cset-plot-y-range 0.0 ymax

; A( [0 k) z/ F& R$ X9 v! Zend) @$ w! H, P" @; `9 `& {

3 j2 h! K* [$ j, S' |4 Z% Eto setup-plot3
8 \0 X- j5 C- P. b& A. O& D" @- ~( P6 n8 i
set-current-plot "Trends-of-credibility"

9 F' \' R; M, Z  d
/ P% j$ w7 z4 U" ~set-plot-x-range 0 xmax
! g. L; U$ U8 x9 d/ n

! m: v0 }! A8 `7 w$ ~  Eset-plot-y-range 0.0 ymax
  F* `3 [; C5 G6 \- s; \
end
% s/ b! @( l/ P
+ s1 ~" F# {0 Z' W, uto do-plots1 Y+ h4 u2 z1 u: f/ d+ e7 j; f; \# j
set-current-plot "Trends-of-Local-reputation"
. a1 N7 e" F  W  I6 v0 ^set-current-plot-pen "Honest service"
2 K( m, t% z& O4 ~- A3 W$ cend
- c9 X' O% L5 m/ [8 ~+ z
- u: H0 ]0 J; y6 N: ~[ 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.8 I- `4 D4 j' \+ Q1 V. W1 P

$ z6 _- R% G( b1 l( u9 J* 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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