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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:: H" E3 w/ `. y/ k5 y
to do-business
; Q5 o1 o3 y! L( k7 h8 F rt random 360
8 J  U6 {* O3 @2 J fd 1
5 }' x% ]4 a/ Q! h5 g ifelse(other turtles-here != nobody)[: h* N4 b& w3 I, N3 B9 i
   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.
# |6 T6 D* e6 I+ l9 Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      C. O. G8 ?) {4 I$ o
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 B8 V7 N' u0 g
   set [trade-record-one-len] of self length [trade-record-one] of self  M# @& v# i3 f7 m8 n& Z( K* r
   set trade-record-current( list (timer) (random money-upper-limit))
3 Q3 z! B5 ^8 i0 b+ Q0 s9 _$ P' o8 x* \1 }  R. h$ B6 l
问题的提示如下:- n& {2 ~4 E9 v

5 }/ m6 ^4 Q, f4 q' K: N% cerror while turtle 50 running OF in procedure DO-BUSINESS
" U$ I4 C; y4 q' q( o4 t' B  called by procedure GO6 O7 d, g9 C6 N& s2 t. M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 c4 P& O8 B5 {% s/ b# Y
(halted running of go)
( [8 {( g1 g+ [4 m: _: {0 i; }% x+ ]! V% I/ O7 W! C
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~~$ y( H* R( ~2 ~* z
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
0 L+ f1 l! c0 [3 Wglobals[
; W- z" `& H0 J1 C8 Rxmax* _4 c$ }$ S: I$ V1 ?8 U
ymax% y* S7 u, w7 z; n3 R
global-reputation-list, E( B, W  z! v4 ^
; _" Q. P2 p  ]! b8 [& q2 D+ u0 U: f3 g
;;
每一个turtle的全局声誉都存在此LIST2 a$ _; s4 H$ F( F' h" P
credibility-list
  b0 j8 b" l" \$ X$ Z' g6 {;;
每一个turtle的评价可信度
# ^8 I/ J/ V5 Y, m. h5 f- a# fhonest-service
4 C1 r% N5 i/ c# Kunhonest-service! C) ^$ a; d$ c! I0 Y. O0 ^
oscillation% A; Y' b# K3 T
rand-dynamic" n! J" S+ Y  V! j9 s
]2 _$ _* v/ \( ^$ y
- e8 D" C* f! X. L
turtles-own[) W* Z) b1 k+ C' S9 z6 q+ B5 {+ B
trade-record-all, m2 F/ {) c/ P
;;a list of lists,
trade-record-one组成
7 b, ^+ F1 v! w. ttrade-record-one
& a& m. {2 \# J# Y+ u6 T; K, h, c5 X7 T;;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 P8 J4 K" w9 ~2 F6 ~/ \8 V# o
) E& r1 Q' M( \+ @% R; C7 O;;[
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]]
3 Z! A8 z) k& J! G, j+ @  D% I+ @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]; x. I# \, w" c7 a( U
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- U8 e/ a! p3 L/ x
neighbor-total- ]1 [- ~6 A9 E. _
;;
记录该turtle的邻居节点的数目
* m# x; {9 ?$ vtrade-time
/ {% g& m/ H; o2 ]. i;;
当前发生交易的turtle的交易时间
( [1 ^; {, e9 P3 aappraise-give
" L3 C) v5 B$ h1 q;;
当前发生交易时给出的评价
' z0 G. N: L$ a- p7 wappraise-receive2 a4 ]( S% W! B
;;
当前发生交易时收到的评价
' s8 N  ~1 l% n0 j7 rappraise-time
8 l9 ]" |+ n. u1 E0 @' e9 o0 ];;
当前发生交易时的评价时间
9 p( o6 P& }" m" Z1 Klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 g5 k, r" }. l7 rtrade-times-total% S/ Z1 ]4 ]1 d( V" i. b* ^+ u8 H
;;
与当前turtle的交易总次数
: t7 v( `; w- D9 j, l* [+ U: xtrade-money-total% {* T. ]2 Y& D1 f0 i9 I; i, V. E
;;
与当前turtle的交易总金额2 |- \, k! t" F# V; l" u
local-reputation3 O; _1 u5 |, z) j: q; B' v
global-reputation0 T6 T  X0 p# N- x
credibility
2 o! k4 X5 h  r+ p;;
评价可信度,每次交易后都需要更新( F. y  s' w- d# x6 m* K
credibility-all
& o8 p4 S5 k; F* y+ k% i;;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
0 l$ h+ w; d2 u3 r7 f
4 }5 N6 V0 w# Q- B* K. K  z2 Q) N;;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 U! n" W0 p, N, L: H2 B
credibility-one. G, k& `. t. G1 y
;;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
  b; o6 y" K# T0 v$ [' Gglobal-proportion
9 J1 i" a1 l0 |  _. A# e: Ecustomer
) X. i- S3 Y+ E9 L+ B9 W: ~5 k; \customer-no8 c: X% x/ \  j( v
trust-ok
: I/ D) \" u3 }) ]+ F* a, M) \trade-record-one-len;;trade-record-one的长度6 W7 j3 M* d0 |( `
]
7 i+ J' ^* i1 b% r1 C
# z" R& T$ c' o& l$ h3 q;;setup procedure
$ o) ~' E5 H1 X. X6 B: `3 N& q: b1 R, J* r: r* I) S
to setup
+ C- }) ?8 }) N' u. |1 ~& ]: R" j, c& G& m# N. M% m2 ~
ca
7 @  |" S2 v* V/ m* A) z1 y

; i* E6 \7 L& cinitialize-settings
7 S7 V8 Q5 U% t, @7 _9 D3 f
' z/ V2 t, h" K6 l* X3 l
crt people [setup-turtles]
. N0 R& c- D7 G

1 W7 c! l& a0 O4 v- _7 `reset-timer
, e8 x1 W% h, W9 F
: ]* [/ h- D- h; T- Z
poll-class

( y6 ~4 \* f: E
$ v: M( J6 |. u$ Wsetup-plots
& d) ^0 L# Z2 H8 j( u$ G! O

. B/ c2 x% [5 R& _2 H( e& X: Hdo-plots

9 O( }6 F% U* x7 L1 Hend  o  v4 J; c2 t$ X) ~4 _" S0 C

1 h1 I- ~% j) D6 a) F( `to initialize-settings8 |, H- M: N1 x* `" P/ v* A. T  B2 h

5 X- M; {* O. `* ?/ oset global-reputation-list []
5 n5 L/ A( E+ W0 B

) `$ Y8 N9 @' U' \8 Cset credibility-list n-values people [0.5]

# w. h' X; }6 x. q5 ^7 }6 V
& @; a/ x, U  d! vset honest-service 0
( Y  Y0 \6 t- y8 P% b; y
( [7 p) a# J4 `0 h. X' k/ G6 t
set unhonest-service 0

- K, a' ~1 U6 K2 x/ h: q+ g" G( D6 M
3 o" S" x/ |/ v6 e' h$ `set oscillation 0

+ l. ?9 ~: @; D/ i& U3 e/ V/ _3 C7 B# G( a- c& z! I" k! R
set rand-dynamic 0
. J1 z$ a" m1 i1 k* s  o# _$ T+ {* }
end& w9 b# c) k! L) Z

9 x# ~0 f# g2 B+ D9 @  Ato setup-turtles # O0 k! y# Q9 J7 x4 m  U& h
set shape "person"
* I, Z; h' @8 Asetxy random-xcor random-ycor; F9 r* e, J! X& \3 I: v% N3 m
set trade-record-one []6 A9 A" d5 `! f) G
. y6 a4 {" M+ F
set trade-record-all n-values people [(list (? + 1) 0 0)] % G/ M% [' G: D1 h7 }
; l' S4 k9 ?+ Z- y* Y, p0 ~/ G( c
set trade-record-current []: I9 E2 M7 u  x' z& S/ t. f
set credibility-receive []7 _* b7 k3 z& d) g
set local-reputation 0.59 v" }# P" K3 R2 Q
set neighbor-total 0
, L+ ~' K0 `' E& B2 h: b/ z3 mset trade-times-total 0! H8 p( ~0 ?  G- R! P- v' f) P
set trade-money-total 0
1 M. D: n: B" Jset customer nobody( ]% d3 M0 c: I% M. ?0 C6 ]% @0 B; n' a
set credibility-all n-values people [creat-credibility]
  |* u# s" T, F( t- T' R& oset credibility n-values people [-1]
9 P7 B" C, N3 Yget-color
& c; Q1 ?" p' I# s5 b9 B
# T: l: ^4 r( V9 q- i
end
9 l1 t! F# x! R2 O6 m
& I& L2 D2 g: v0 kto-report creat-credibility
# G: G# c4 B) E5 t& l6 greport n-values people [0.5]2 x5 N6 V" k, `5 F+ @. M, k
end" ]4 V" Q$ M2 Y/ B
1 p5 [  ^5 w# ]1 V
to setup-plots5 _! L5 i' o  f8 [) e" @$ k" G; s* a

5 C0 M3 D& ^  n& A' C9 \set xmax 30

% `: c8 x& i4 q, g" P! Z6 [# \4 m+ f' g3 |, Z7 L
set ymax 1.0
5 P- ]  x% h4 r- R
" g6 w1 p3 W) l7 S( K- a0 a5 D( I
clear-all-plots

, p) W' c  M0 i% ]  Z
9 f) Z% V) ]6 Dsetup-plot1

. U0 \/ T. o5 [+ M  _9 O
/ e% X& h! B1 y6 z$ \' i- v6 _setup-plot2
6 `: o: b+ @! r. l5 ?
; [. x5 J$ \: m, d! Q7 s* x
setup-plot3

+ O$ k, w3 O" f( Qend
6 z' x% o! S# X- K0 ^+ S8 i; r3 o3 ~: ]. H! @& J5 u+ O0 X
;;run time procedures
' U$ O, J* u1 Z8 Q7 _5 S7 i" D- N; Z  N5 I
to go5 |6 B9 z( E" d& {4 t

7 _) E, e) c8 U, b: f  U% C/ bask turtles [do-business]

( O+ y" s3 k* {% X  Mend
0 V* E' V, h; o& C& K6 g2 I  T+ u1 ?( U/ y# B9 ~! W
to do-business ; M2 J$ m9 a( ~* t- |1 B( E! p* G

% Z+ o! {: |  U, Z5 y& }( p3 J0 h/ a( U! L. }$ I7 Q# `
rt random 360

/ a. ]- _/ t9 [+ {
% Q' F9 k% h' ^/ D5 hfd 1
+ \# q0 R2 E, J& H5 e6 J9 g

! N1 r2 I3 z! u4 ]0 h  B; ]ifelse(other turtles-here != nobody)[

  f2 E! {& \+ h4 p, s
* p8 b* o( E1 dset customer one-of other turtles-here
3 Y* G' E; M6 A2 }& @
9 R% H6 l% l- Z% T# m
;; set [customer] of customer myself

& O1 ^. W8 K+ B  {5 r/ e& O/ T2 ^, z2 H/ s  V4 n
set [trade-record-one] of self item (([who] of customer) - 1)
8 ?8 g* P' M& D. q5 D( N3 B3 |[trade-record-all]of self+ }1 q, W9 \! \+ a& B8 J6 g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  a% t9 \3 I- F+ e7 B

1 R6 u1 t8 r1 }3 ]* ~- gset [trade-record-one] of customer item (([who] of self) - 1)
% E& O- e* d+ N; l[trade-record-all]of customer

2 e7 E- m$ Q( r/ {( A$ D& \; j2 |: _. R
set [trade-record-one-len] of self length [trade-record-one] of self

0 A5 ]4 W: L% [9 h& \# E, i1 Y7 z# f; `' ^
set trade-record-current( list (timer) (random money-upper-limit))

9 s, ?7 l& F( [7 Y2 a  Z/ \$ r3 h! `3 J/ m4 c1 E- b# x7 K
ask self [do-trust]
3 b7 _1 V, a2 L% f' M9 Y( c1 G;;
先求ij的信任度' t/ ]! q3 B, Z! }; P6 g

3 e6 l( T+ H; W+ y4 ?4 T# b- oif ([trust-ok] of self)
5 k5 w) J1 W) @* U) Q9 W$ I;;
根据ij的信任度来决定是否与j进行交易[; [8 m; \2 ]/ |7 T  o6 G0 Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( I0 y( i. j6 A8 r9 f

, \: s) R' \& [( n, M[

1 T8 [/ d. c( N. T6 |" u& T6 R7 j- `0 z- J$ S4 W
do-trade

2 a0 s) O4 z, f$ }
: t( `( M( ?, S( ~5 supdate-credibility-ijl

  z, a( H8 R; L4 r  A. l
: \% |6 |- R2 q; H- Y0 t* _; }update-credibility-list
* H0 s, c/ _. v' o
4 ^! I0 z  O1 K9 ?4 @0 {

: z$ R" ~  [$ d5 y8 }6 ?; I% ?update-global-reputation-list

4 `) s( Y. q2 N0 r6 ?1 B% f8 q. b
5 S2 m8 I% v! S2 ]poll-class

) K  V; G3 \. i. O7 m4 w: f3 ^# S; O1 k
get-color

7 h; @1 l: i& c
2 Y$ e; ?2 w- K& F2 `]]
- T5 H  a! Y6 _3 E# e4 L  j* V( L# ~1 x; b) r* V. I& q
;;
如果所得的信任度满足条件,则进行交易! H6 V0 E. l) ^3 x
6 a2 e- ?9 K) F6 L& l
[
- A, R$ ?! b1 p( o8 `* m1 V
- |7 b, ~' A. M
rt random 360
  p" z( R, [3 O$ R/ J, x" j) {' N. p# ~

* U* Z3 H# v0 v, f) pfd 1

# K6 [0 s% L. C% `' a& V$ y0 d5 ]& I+ M$ R2 y8 ]4 C
]

& B" t& t! R$ ?. L5 ^& q$ O- ~% m' B7 x
end
3 {/ q( J+ V4 z3 F7 c) h3 ]/ \, A1 Z
' a. X: u, ~5 Q2 z) G; q7 E8 v
to do-trust
( r% |3 f: _% L  ]  V( Gset trust-ok False
3 W8 a! a" o1 E$ F& x) m  z2 h/ d) x  D9 a% m6 c
+ [: |' B. v8 F# \5 q& v' L3 v+ [9 ?
let max-trade-times 0
* V$ i. F5 f3 x9 c* }/ q/ vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: X# N- z' T- i
let max-trade-money 04 G' {  u6 m/ ~# n8 e4 {* e( B" }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) i; |% d/ w( P& f3 O( klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ ~8 l0 [8 j2 r1 H

* o! R, w/ k' K( T3 ?% `5 T

0 f, S/ l! f8 Yget-global-proportion( K7 [8 J6 r( n
let trust-value
* K$ i0 b: f( P$ hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

' O4 A& G' D7 s+ fif(trust-value > trade-trust-value)( V1 R1 u, G3 O  `. f
[set trust-ok true]
$ D* ?8 w! i5 H0 P. xend
) @; B5 Y% ^- e% w5 i% |2 f7 @$ Z
( q6 f% @! _/ i% H8 \) g6 |" Ato get-global-proportion' i$ c, u+ ?: i4 s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 D5 T" _5 ~) @6 ^[set global-proportion 0]3 a4 {* J+ h! S- E  E
[let i 0& T; W2 t* k3 @, l, f$ b
let sum-money 0, m9 i' T( \5 k+ M$ e
while[ i < people]  z; i( G. S0 `' b* A
[) E7 M, J: m: X
if( length (item i
" o; i* S3 o% B( C( T/ d[trade-record-all] of customer) > 3 )

! y  z& s7 e, _% s! T8 ^" n9 R[
/ Y: T9 }) _# A1 |6 y% u- sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) ^: w  {# p) ~& T8 ]! g% J
]$ l* g) R1 @; \  a1 l5 v" e
]7 }  {0 i+ _9 d% Y, p
let j 05 z! l1 @  _9 W% X
let note 0
, h7 {# {# a+ G8 z/ S5 f% U( V" r$ Mwhile[ j < people]- T6 K% O" {, g/ v4 ~  y- Z
[
' y( a# {; Y( j* P5 Y! _& `/ E$ tif( length (item i& X; ^' l7 O+ C* ?3 W
[trade-record-all] of customer) > 3 )

# M0 f1 Y& c* r/ ]6 q[  f; u) A* @5 R! Y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ [# g4 q! a) i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ a3 b& ?9 y3 x8 q0 k
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! D( ]# @( _# C& P# ], n
]# q! m4 o/ R% D2 o2 A
]
) _8 H  I/ \  V7 Zset global-proportion note
2 L3 W4 {5 E1 k3 W* H# ]$ }]
5 B) l# a: w4 i, Wend
7 T! U/ O0 b# e4 W3 M4 W
! n/ w) [3 |5 D9 s5 Mto do-trade. I: q! b' y2 G  p9 C2 X
;;
这个过程实际上是给双方作出评价的过程
. U2 x( \  m, eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 P4 l+ c" U# s2 e, r. ~. P+ ~$ kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ o" P8 H; s  }' |set trade-record-current lput(timer) trade-record-current& Y! ]+ f& g( R* i
;;
评价时间
9 a" D) l$ n" L9 @2 Fask myself [
7 L' k& k; D( M  O: Rupdate-local-reputation
1 v/ @9 q2 |* s6 D0 k% Aset trade-record-current lput([local-reputation] of myself) trade-record-current9 B" k. P; S" w* [' ~- c
]0 g* x0 G( b& B
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 c4 G# T" N' K, f;;
将此次交易的记录加入到trade-record-one
* V- J: W& I" |5 `# ?set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 `% b* n- k4 I/ y# {let note (item 2 trade-record-current )# }) L2 u$ f' q) c
set trade-record-current7 P; C$ t+ _; W( H- L8 E  A% M" \' s
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ B% R# C  {) aset trade-record-current* C' z. K5 b8 H/ G/ ]
(replace-item 3 trade-record-current note)+ F! e: n6 ]& [- H( m3 _
2 E! o) H( B* T! c6 U0 l$ \, t$ L) P

. b: t# `5 ~' p; G1 mask customer [
. S& e2 ?/ \1 n9 ]; p0 q4 cupdate-local-reputation2 F$ T* k& b' [/ \, n# ~
set trade-record-current4 E. N" J* a$ E0 V* ?3 E8 B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 A- I: d, ?5 t" M; H]
; D3 C9 i4 Q  y. F+ g( b8 [+ e8 `( t. ^
) A/ a8 |& ~5 M) W9 {* t2 s! y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 v; M6 z" v5 ^5 A# @( @1 c4 F

( s$ H3 z9 S- i. ]: g3 @8 ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 g, V% G5 c% M0 z4 p1 k;;
将此次交易的记录加入到customertrade-record-all# E  n3 u. E  |: h' w( z4 q, n/ s) J
end; {. w* \8 a$ @; X% p6 v
) L7 Y! ^7 U  R; i8 Y
to update-local-reputation* m& E1 b/ H* K9 s5 ]& o$ u" f( l
set [trade-record-one-len] of myself length [trade-record-one] of myself. W- J- g) r+ ]( j  x$ \
  N% j' |( N2 j

. Y8 _% H7 R1 m$ m5 d;;if [trade-record-one-len] of myself > 3
, n6 s7 [) S8 ?! a, p1 Z
update-neighbor-total2 A$ u$ u/ F' H5 U/ Q/ D; \
;;
更新邻居节点的数目,在此进行
: ^2 @" H2 `/ _0 rlet i 3
# `2 E4 U: J' V* T6 elet sum-time 0- J' b% ]! N6 m- a# s$ u
while[i < [trade-record-one-len] of myself]! O5 ^( o, X: W- D
[
! y7 q6 W% H# _. vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( g: |; c5 N' m2 M7 {  \, h0 X& T
set i  d7 l: v: p0 i8 \9 _
( i + 1)

2 X. x% G4 F! ?- f]
! e, L2 [: U: q% r) O3 S6 ~2 xlet j 3
% L" b+ C' S( z9 f  s1 _4 ulet sum-money 0- z3 G; X% @  L8 ]1 N% R
while[j < [trade-record-one-len] of myself]
  g! J4 M6 l4 l+ H6 j" ~3 p[+ n/ U( l" p+ p" C$ ~
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)
, U) x0 K8 |3 P3 J; o" F- Mset j
( D1 w! q$ b" o) W; p7 ]( j + 1)
! b3 E+ [. v7 Z* ~
]5 j; s, `6 \, w% a* g
let k 3& b* `  b* `' A1 i4 |0 Q
let power 0
8 o- l- N5 O7 U& Flet local 0
4 k0 F* Y2 @+ Hwhile [k <[trade-record-one-len] of myself]1 i6 e2 ~& M8 V0 k
[1 ]. i7 E: _) O
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)
3 t; v, m& O! `+ w" y- gset k (k + 1)
7 G' S  e9 g0 }# q8 B]
7 h& k- M& x# R+ A2 o  Kset [local-reputation] of myself (local)# R% g: [1 u/ W5 {% ?
end
' P/ X. ?4 ^4 X* Z9 F" e: e$ A2 \* z( ]1 E
to update-neighbor-total  k$ z; G" Q. M. }  u
3 v* T3 `+ X) M6 W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 p" S, ?3 p7 z# z8 G9 y8 M7 j+ ?( s) I0 _
6 e. w  t& p7 G+ d9 j  \; C) U5 K9 j
end
/ {: R, R  O1 }- I+ H6 v8 w9 ?' X. p0 b" \# u7 p
to update-credibility-ijl : d9 `8 x  b6 w, }% J: C

3 P3 Q- F1 [$ e+ y  e8 E1 ^;;
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。
0 D3 U+ n  }- I4 d+ n6 F4 ?let l 0
" o4 V" w+ A4 H& Pwhile[ l < people ]5 [6 n1 O, e: W' p# U- X
;;
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7 y- P. u8 s( Y' F1 N! D. D- Q- ~
[6 f6 i2 k3 k/ Q' t2 U4 ~3 r: e
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 P1 w' V5 C/ G
if (trade-record-one-j-l-len > 3)# K0 A6 ^! C% T& p( O1 n
[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% v9 e% m$ v" F5 K4 X: ]: s
let i 3
; Z! V" z! i& T1 y8 Z1 g+ @0 @( |& ilet sum-time 0
  p( s, D6 J7 ]( W- Y# ~while[i < trade-record-one-len]; Y$ T8 k7 x4 x) ~
[  q/ \0 T+ E. f" ]1 A# g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* h) c5 O* \+ Z- N/ Z! ~
set i$ y: p! k: n  a; w
( i + 1)

2 H( n  N+ h/ T9 `' g7 V$ a3 q]' v, C/ Q' I2 f0 i. |) |
let credibility-i-j-l 0! e2 P2 @" R8 g3 x* r8 o5 u
;;i
评价(jjl的评价)! _$ q. j! ?4 J  M5 h& l' j, f# x
let j 3! M' l# D. B; Q, ?5 b
let k 4
' _) @: A' L4 p$ M  x: {* Qwhile[j < trade-record-one-len]
5 G- i/ w, [4 x5 S! z[
( `  |9 s$ y1 c9 V4 [: c; z) awhile [((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 w& |" Z8 l6 [" u% y! ]& e
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)
% q  X/ F# R3 ~set j9 ~8 v. B  E3 f4 z7 {5 M& ^
( j + 1)
/ [, q( G( B5 {2 [& }
]/ k- S# I; i) A  `+ w# U
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 ))
: [  J: o; G) I7 H# V6 x% ^5 M1 L6 p0 H8 X

% U! F4 [5 B! ~9 _# Jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ s0 S1 f' w/ L# _$ L0 E0 _; V, m
;;
及时更新il的评价质量的评价
" B1 M3 x' I" s( V, Y6 T& Oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 ?5 U0 {+ K) x  J4 Bset l (l + 1)7 }) D. |' [6 u0 d# m
]) o& O1 B: D2 |0 ]/ Y4 I* V- j
end
( m6 M1 x6 x2 v
: c; }( u5 c( E. Uto update-credibility-list# G' q# b* \* R' S/ K
let i 0
0 H* K0 d& \/ l: j3 iwhile[i < people]
; B2 o8 K; R- p  E* k6 e8 T[" E$ F$ s) k9 K1 G( n& G" `
let j 0
. Y3 V- N: W* klet note 0
# W7 {7 m0 w9 ]% ~let k 08 ~1 \; P0 L" G7 E9 O0 I
;;
计作出过评价的邻居节点的数目
# o" a7 e4 ^2 \2 bwhile[j < people]9 {' U9 \! a8 M$ l9 B' R
[- l* E2 w: Q2 F7 m2 ^
if (item j( [credibility] of turtle (i + 1)) != -1)$ B) p/ v1 J2 B5 f" ?- C
;;
判断是否给本turtle的评价质量做出过评价的节点
. x+ O1 [. t3 m, D: D8 R[set note (note + item j ([credibility]of turtle (i + 1))); v: z8 N. m& y$ a+ ^
;;*(exp (-(people - 2)))/(people - 2))]

4 U" }: I( B; d% ]& ]set k (k + 1)
; b; C' ]. j. `; D, m: Y6 h]
2 U3 M; M" I% H& Y9 m' p+ m5 e& S( ?set j (j + 1)
0 C' r& M% y+ l; g+ m! C& J]
: E* N( a( B+ |; |set note (note *(exp (- (1 / k)))/ k)
" Q* i2 w( e- {set credibility-list (replace-item i credibility-list note)) r+ C3 ]4 }9 {. }& r0 U* k* ]
set i (i + 1)4 D8 P/ f0 f  t) m2 n* f
]
1 e1 c+ Q9 E" T6 T: U" Yend
  A3 R/ s. S. Q! k. g% v
  [% q2 p5 c; K& p. S4 }to update-global-reputation-list; P* F4 D$ c0 I  y  a5 y/ ]" w! m
let j 0
2 T0 t! [+ @! k1 s* P  I  Owhile[j < people]* \# ^4 Z+ P! H& O* g4 f8 t
[- n: `8 Z  e/ U( f$ L+ a5 }2 o  {
let new 0% T, ~" ^& n  S0 A% m7 l
;;
暂存新的一个全局声誉9 y1 M* ?2 B. b/ U
let i 0
, T+ s" {3 P* f% B" K: ~let sum-money 0+ L' l6 U! q' J" ]4 q
let credibility-money 0
' l, }3 W3 Y3 _2 X" }while [i < people]4 i8 l! G" t" |# g! ^
[
8 a0 Z* ^) \9 uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) G( H- N" x9 [: x; L$ A. C8 oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: Y' o! b! j3 D4 P5 uset i (i + 1)
& ]7 `7 P" K% o( W# m]
% Z( w1 C) B$ n5 Rlet k 0% Q4 L7 v- w; ^5 d* c, H* F
let new1 0
* b( Z0 h8 P2 |7 t& q+ m; |2 hwhile [k < people]' s1 f1 M2 c$ C" B  U
[
6 ~' [5 R2 b$ N/ }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)5 ?3 Y' o" d9 `- c- _7 A# y+ i
set k (k + 1)) F& V! ]6 m1 \
]6 J2 ]& N- n( F/ _
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 D) N* z5 E6 e9 P8 r, Iset global-reputation-list (replace-item j global-reputation-list new)! t7 E  d" l" d' J0 Y
set j (j + 1)" e1 d. t* w6 X, M. @& `! r
]
: j* g1 o. |0 r* n7 r- }end
# m8 R$ V& J6 i0 a5 ]( J4 X
2 t" e+ f( J7 c/ J8 @$ t& Y7 F0 ]9 [- f! q/ h

0 A/ {* G. k2 J- o, `# uto get-color
4 ]) X8 C/ m" ^, z. p* |
: x& _3 y7 y! R" T. \5 Y# n$ \/ ]set color blue
( U, r2 L, J, v! c1 F) ?( K+ E7 ~0 J3 ?
end9 k7 o7 Z  P! |8 q' X2 F! p
5 u" @6 l! ?* t" x3 u" e1 X7 N
to poll-class6 o: @% Y& N  q# N
end& V7 d) ~3 u9 ~2 _

( l% F6 y0 L8 N7 F/ Pto setup-plot1% z1 |+ _4 y! r' q/ _
/ G6 j# p7 y& M6 L9 n0 Y3 p& R
set-current-plot "Trends-of-Local-reputation"
; ^. H, E3 ?9 Y1 ]/ Q
! z- _* y! o$ G" C" m
set-plot-x-range 0 xmax

1 ?5 Y& S) T* X  v' M3 F/ N6 U4 j
set-plot-y-range 0.0 ymax

6 m- h8 f" l& Y3 m9 J1 H8 Pend
2 n0 k! P( @! `2 q$ p- E3 _6 |5 q2 i
) ^9 {% F9 U# E' r# p/ M9 uto setup-plot22 B! u/ i4 n0 }( b2 q# h( f5 h* M& ~

! v" o$ Q7 w4 Vset-current-plot "Trends-of-global-reputation"
2 d( l3 {% O4 ~6 Y7 t0 y! G. s
. j9 b4 ]' U: H# `: M# w
set-plot-x-range 0 xmax
( n1 d$ S* ~7 {5 x
- `/ f% W. b) Z( S8 L
set-plot-y-range 0.0 ymax
; z- p5 o- v8 l. U& g5 i1 Q. t
end
+ C* q) X' c1 F; B. {; O
' N0 Z/ U# ^1 p$ O; d5 Wto setup-plot3$ M  t. f. e" e5 y6 G6 A6 c

, J- z: r! t& s* v& \set-current-plot "Trends-of-credibility"

/ y% ^5 y$ S- F- @% r. v2 G$ n
; W+ ?; s; j' B3 Eset-plot-x-range 0 xmax
* ~3 O! b* ~+ r/ ?" v
& V0 H3 `, I# \  {3 s
set-plot-y-range 0.0 ymax
; F/ Y" S6 c( i% b( u
end
9 X1 \) T! R( x7 e( q; ?% V0 w
# Z6 M0 S# {! A' F' z* K$ q+ ~% Zto do-plots1 E. Y5 v* D( [" m+ B: C; w
set-current-plot "Trends-of-Local-reputation"
8 E+ W) k  s  v: ^5 aset-current-plot-pen "Honest service"8 M5 p2 I2 ]+ u9 k1 Y" K* r% }
end
3 m) I0 s/ k4 B! x: z2 l4 h+ d0 c
[ 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.
$ m$ [* B: X. {( [5 g( O$ N/ @* Y' q+ S3 @
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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