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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:' z  _0 Y4 G# V* {" k5 t/ M9 X$ K
to do-business
: M% g8 G9 l2 @% q rt random 360
, `* F5 C8 _9 A& ?" A( J$ c' g: X, I fd 1
2 ?8 E5 U( J3 z ifelse(other turtles-here != nobody)[7 n; n& Y) G0 O7 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.2 b1 q( V/ R( l$ W' s6 z3 I
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! m( s  r! }% e% _2 n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 L: ], `6 Z+ X, A   set [trade-record-one-len] of self length [trade-record-one] of self
; v9 ?0 J/ F3 V   set trade-record-current( list (timer) (random money-upper-limit))
  i1 A; a' l4 H* `$ `, p2 p( u) W, p1 r# w
问题的提示如下:
! D6 o3 `8 U1 f! [+ j. Z" ^5 i1 ?( F4 F4 V
error while turtle 50 running OF in procedure DO-BUSINESS' c- m% K1 g! \* M" r$ \5 d
  called by procedure GO" `  }% p+ K: I: R- c- s# P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
& l! k3 G1 N$ N- p& A$ W
(halted running of go)7 M4 d% H0 D  M! x9 [& e) v0 M

, O& C) t4 A( h" B: s0 [2 S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~~
6 G. S5 V* C, M0 U4 B! Z1 P- j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. g9 y- N& n0 ~6 C! Q. ~" l
globals[0 Y7 B  ]" A) W' ~* L- t, x" p0 F
xmax7 j+ i8 B5 R: m: I
ymax3 j; b) M4 ?& p+ [# e$ p
global-reputation-list
2 [7 l) F2 u, Z- L- w# b7 d4 X( i9 S' u  j' p
;;
每一个turtle的全局声誉都存在此LIST" d3 W. ~' h  W* S& {
credibility-list9 ~3 i8 W# h0 i2 E, `9 W, K
;;
每一个turtle的评价可信度
" C7 q" k) Y) F5 rhonest-service% c: b9 A7 F  m
unhonest-service
  w4 ~( W5 `: i7 c7 l* r9 Foscillation
! t4 T! l  @/ [rand-dynamic. v: H9 T  s) G
]5 L& i- V& B" I& ]

" m6 K6 b$ _4 [9 y: Qturtles-own[. b0 V' F2 c7 q. \
trade-record-all/ V- [! I# ~1 d/ D5 V7 z8 c# m  @5 G
;;a list of lists,
trade-record-one组成
8 R# f: ~+ C) V/ C4 T7 w, y# Qtrade-record-one& I) B1 M3 y8 I, \
;;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 B& t+ ~, W9 s% k  H! d
1 L8 S% v( l+ T# c9 k
;;[
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]]6 W, o# |, T6 E
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]
5 o+ }# T5 [& U% B/ q8 X1 ]) Q9 Gcredibility-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* b: E& T" G; x  o4 o6 O& |7 U/ H* f
neighbor-total: \) c7 b2 d, V7 u! o; V$ G
;;
记录该turtle的邻居节点的数目
3 o1 R4 g  Q; ltrade-time! E  I* _7 `5 A" s
;;
当前发生交易的turtle的交易时间. x% U9 D& a" B% [0 F  \' K
appraise-give4 h1 g+ s( {/ `; Q# q1 l  s8 ]
;;
当前发生交易时给出的评价6 L9 |) |8 c7 u+ a) p  M
appraise-receive* O3 H& D. D9 `8 ]2 G, @
;;
当前发生交易时收到的评价
( \& H6 T: o, {5 H% q# ?appraise-time) \7 L3 U1 L" c! t9 K
;;
当前发生交易时的评价时间
: [; L; b1 L" k& i8 plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
& ~' i# S$ x1 `( P4 |trade-times-total
4 o, b! u, X4 e6 o;;
与当前turtle的交易总次数
) o. {/ ^( {( ~. Ytrade-money-total
& O6 u4 P/ }  G1 I' R;;
与当前turtle的交易总金额$ C' z! H) G" |6 g2 _
local-reputation
/ A& {9 t- j( aglobal-reputation, W" S1 n, w8 N
credibility2 Q+ z* S- i" H% I
;;
评价可信度,每次交易后都需要更新9 {% |3 p* b  E& r4 W# L
credibility-all6 y8 a$ s& ]" Y) a: p
;;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) V" d$ Y- J  e/ P
% n3 t/ C8 Q) ?+ Z4 U
;;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
9 b4 I# T" u) K* v) [- ]2 u7 _credibility-one
2 `$ {0 G6 K; }9 d( M/ b$ W3 w;;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; f+ C# ^  n8 W3 M: |, A3 \
global-proportion4 k% L+ c0 s$ o2 b! p0 ^0 y
customer/ G5 x, B* d& e1 Z3 n
customer-no0 o6 j' J1 J5 g7 z( x. \
trust-ok8 y7 H+ U" n4 ?
trade-record-one-len;;trade-record-one的长度
, P) ~. O' T  k1 R]
  U5 U4 I0 [! i  M5 B& {6 f) Q0 a4 O" C5 M
;;setup procedure
1 u3 Q# \+ v/ N* E2 _& i' f" i5 \0 h& E+ F' l
to setup4 P& r7 L) P0 @0 H  m

, Y* _. P2 @0 p: `5 Eca

8 Z8 v0 h0 f5 t& X( _3 u' u# `  n( o; o
& }) ?" h3 V6 z' U& i3 D7 Zinitialize-settings

% s# Z& W7 P2 M  u0 F4 C% E+ P/ R; h
crt people [setup-turtles]

6 V- S- v) c, h) a# S; H
' ]! W2 K. ]8 M) U3 xreset-timer

6 m3 i( J2 e6 \& B
/ w9 ~. B2 L+ _7 ^' ^5 _poll-class
2 S  v4 j' E/ H( l; L
: \' s  q- [" k  J4 }' o- e
setup-plots

( B3 [+ g8 V3 W% F( \0 w; a% b) @' V* p0 f" b8 M
do-plots

+ M3 c7 Z' O7 T; W( ^end" X% C" p& Q; P

8 q5 S4 G+ R4 J" L; |! M( a/ Vto initialize-settings: W' X( P8 b4 G! `* \/ L8 @0 D% d( I

/ N! c2 \: `$ oset global-reputation-list []

) G$ G" ^# G$ u: r' S% Y
, q! [. \& R9 p3 ^; R, X6 ~set credibility-list n-values people [0.5]

: i& B5 ]# j6 ~: c7 i4 ?' M( X1 l( @) p) O6 ]3 c; g' c
set honest-service 0
8 V' l7 M- v+ h8 t

5 s7 n1 @8 T% F: }: ^" kset unhonest-service 0

% e; X# P: \8 X8 v, H& U9 {9 q; @3 Y' F
set oscillation 0

* q4 N) c& b+ f4 Q" \0 ^# G3 [' ?  c# E4 `" w" }
set rand-dynamic 0

+ U6 k6 e3 e$ B  w7 o4 lend
3 M* g0 X% y( w! d4 D' w$ h2 n; y" |6 P& B0 d( j. u
to setup-turtles # [( N* q; t. s8 Q! y! P8 _
set shape "person"
1 D5 k9 X% e+ E* w3 a. bsetxy random-xcor random-ycor; E# X$ N4 }  o' y" z$ Y% }& _* L1 }
set trade-record-one []
, S8 k7 U" u% S

5 {0 B' F$ l$ [5 T3 k9 \8 uset trade-record-all n-values people [(list (? + 1) 0 0)]
$ S: c* Q* ~8 @' h. c
: {$ u# g( M* [& q
set trade-record-current []( s/ X1 X. I+ c$ w9 u+ W( O
set credibility-receive []9 X8 B+ ]- V2 [2 }4 \# v( E. C# r
set local-reputation 0.5
* w7 G# `2 C2 R3 dset neighbor-total 0+ p4 M9 c3 E$ m& g1 i/ D. f
set trade-times-total 00 D5 s0 M3 |  A! P% z
set trade-money-total 0( J2 [' \1 P6 R( h/ C; W
set customer nobody
, A# I$ ], i# b) J6 W9 k3 r& mset credibility-all n-values people [creat-credibility]0 I% G& ?1 M3 W' h4 {1 g2 f
set credibility n-values people [-1]' q" H) P2 k: Y  h+ g9 p
get-color
/ f. w- ~4 E9 n' R
& Z! f1 a3 n% _- h- ]: I  P* x1 `* E
end& q* S5 N' T6 u* T3 T
! h9 v2 p+ f; i6 X9 x" z
to-report creat-credibility
1 K- i4 v% t" Y; h! O8 }8 H7 wreport n-values people [0.5]8 \5 E% Q* G7 X& `4 f/ J6 U
end5 U# ]. \& f9 A* o; T( u4 e% E

8 n$ Q' d, K3 p$ Wto setup-plots% i: r+ b" ~2 Z7 ?
! t$ K1 S1 M3 \0 Q- k
set xmax 30

% e0 r7 W* u1 U2 i' x5 {2 U4 ^, C/ J3 Z3 z
set ymax 1.0
  e# t5 R7 L( t2 y. _( ?
! U3 \# W: _0 a1 R
clear-all-plots

- o; u/ M3 ?) S& k7 y: I6 x
' C/ ?" s, W. {' X8 i' ~; psetup-plot1
3 X7 y* G/ f& k/ \$ U+ S, e: ~/ a; S

( g0 J" ]5 r# Usetup-plot2
$ |3 Q3 O/ ?, x- E
: Q% _3 q- I7 Q) Y4 m6 Q; l
setup-plot3
+ h( m( @: _" K  c. i5 @6 ?- D
end7 q( y8 k0 `& S
+ A3 ^# y3 Y5 d% Q' t
;;run time procedures6 J0 Y" Q5 r+ I

2 a9 l% h3 a3 R( J( bto go. F0 p: ~" K: W: f, T

& \8 _$ @4 q- `* m7 M1 A; c+ A! X* Yask turtles [do-business]
" ^. h. y* r; Q" Q. |/ X
end, C$ T. b8 g  t. b) _; o+ k

& D9 @# I0 _: a1 ]! H" pto do-business
7 X4 [& t1 `, h! Y* P0 E

  A* g$ X' t: K' A' W" x- D% J" f+ V
2 y% n. s/ f! o  Y# d* Xrt random 360
  ^1 ~7 c( Y2 a- u

( m5 x: V% w& R3 ufd 1

: s1 Z# X: Q0 @- n0 G- e5 r8 d" `5 _. t& k  }
ifelse(other turtles-here != nobody)[
& N% X+ X, _2 b4 q  j1 Q( `$ |
5 M- r% R, e. \5 @) _3 Y
set customer one-of other turtles-here

5 _7 s, k: _; m; }( c- J( N" C5 b$ [* w) {7 u9 c' ]
;; set [customer] of customer myself

5 C5 ^6 g0 [, q& Z) ?" k  W! t' a" _9 ^! g! `
set [trade-record-one] of self item (([who] of customer) - 1)
$ G% ^5 |2 g& q3 r( H[trade-record-all]of self( @% A# e& o! a
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! z+ c. G; n4 n, w( ]' _
4 O% X" L/ _, B
set [trade-record-one] of customer item (([who] of self) - 1)
+ v7 @7 n8 L3 ][trade-record-all]of customer

) b' I, ]6 K+ Z( b9 J& Z0 q! w: Z6 s
0 ~$ f2 C3 ], a9 Vset [trade-record-one-len] of self length [trade-record-one] of self
: R8 G6 d* y4 |/ n  d% u
4 _1 r3 Z4 R. v! I2 m3 O) e! Y; G
set trade-record-current( list (timer) (random money-upper-limit))
- p8 X$ I. ^% A: ~* z" K
  i# |7 `& O+ G8 F: ~& p
ask self [do-trust], Q* y4 `4 d7 ]& e9 T' g
;;
先求ij的信任度) S- f6 U8 c# j" |0 U1 |

/ o/ P4 H* J! {" ^if ([trust-ok] of self)8 h/ e9 b0 a$ C! j% Y9 i
;;
根据ij的信任度来决定是否与j进行交易[2 P  r( [- q. j- X2 s& Z4 ]  q5 G
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 f7 {) N" U; a3 Z, q8 ^# \" Y8 |5 n8 x$ ?' f
[

7 u1 x6 [/ z4 S: J, x$ ^9 D3 E- N) t* @' S3 P5 F/ ~3 l& n
do-trade

  v( N" ^2 i- b# b  \/ ^6 p5 c
, J# U2 ^0 e1 X: ]" s& t5 Cupdate-credibility-ijl

- l& u* J& S8 d3 _! V* n* }. A0 n7 G- f# ^9 Z
update-credibility-list0 F7 r1 O9 \! C# {9 x5 m

" Q: r- a' [" [) r# M* v- C  @- D. ]. m; J3 h  N  U/ V
update-global-reputation-list
; C! u& G) S2 O! K: d3 U0 v

) G" V: U9 Z& Q+ F) N' dpoll-class
/ v0 M- f/ O9 v  M" L' m

7 F1 B9 J& E  }6 gget-color

* B; w; W4 C/ @, j% Q7 d/ w! ]/ |) b/ y7 e6 N5 B; E/ E! [$ n8 S
]]- Q, e$ @1 Y  e

7 O$ k" c7 Y5 _: r* T* H: {;;
如果所得的信任度满足条件,则进行交易
# [/ C6 d& L6 M) v5 a5 A2 ~; x2 \1 A2 K5 A
[

& E+ `( v1 C2 p6 F5 g" W
2 P( v" ]" r- \0 y* N5 w2 X" |0 Art random 360
) K& `$ V; s, l4 Q$ |

, w2 @1 ^5 o6 W" Hfd 1

# Q' P7 ~7 L! h+ o- |$ s' I, u3 _7 l7 n) W# s+ z
]
- p, ^- E! ~+ r/ E

! F' c  G; l' k# Iend
* R$ |2 \7 p: N# I
- U* i/ _0 ^4 Z  S
to do-trust
$ h+ D0 _& X9 B$ Eset trust-ok False
# L7 B# [. n; s/ i& }# ~, s
# R0 h5 _+ D# |) [% i
$ q0 Y+ B; {) k6 C# L
let max-trade-times 09 ^3 {: o9 z# f' L- }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ a% M2 H0 q* F* z- t0 m7 D! Y! {
let max-trade-money 0: D" i4 l( J0 ~! b8 F  p0 n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. j) y  L# Z$ ]9 k8 Y" Rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ X* Z* m+ X4 Q; C* o$ ]' V* F' _% }* ?5 l# G& W+ O
( s) h7 ?6 ?* O; y
get-global-proportion0 c! n% L. k' F+ m& I
let trust-value
& R9 |: o& i! u. M" Zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
5 {6 ?% O9 i# }: C& S- _2 x9 s
if(trust-value > trade-trust-value)1 g. |& H3 d7 ~) o7 G  ~2 z3 r
[set trust-ok true]6 I+ [* d0 S1 s  U- }
end0 p- O+ ?) }$ E0 i% S
, Y: j: a: m3 e6 \: ?
to get-global-proportion" Z+ k3 w( r. I
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ [. r" l$ @# w" L" ^6 t
[set global-proportion 0]0 X( w. c/ B9 r# m: y+ Z8 m
[let i 02 o3 ]: y& j: s8 m8 m( M3 h
let sum-money 07 V: S5 ]. s/ B/ W
while[ i < people]
/ s/ S/ F/ Z8 Q" d! y[
* {6 o2 m3 S) d7 p, W" v% u9 Hif( length (item i
- b4 \1 h' x2 R9 ~, F[trade-record-all] of customer) > 3 )
9 Q8 l8 y6 m& `5 ^5 X) @
[; b! V# a' J8 u7 t+ q/ m3 F9 b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" g; D3 Y7 H* T3 ^8 P7 m$ C8 ~
]
9 _$ |6 ]* ]' P2 Q+ `: n]
0 Q  s( }0 z5 k7 A+ Z7 H( @6 Ulet j 0
1 F- Z5 K4 U! K" `) w$ @7 llet note 0
# x5 U, o7 u. N9 t. Iwhile[ j < people]+ z; y6 e$ H5 O( I
[
7 q/ J/ a2 t1 G1 Q2 w  P  kif( length (item i# u: w+ ?4 d2 m3 F
[trade-record-all] of customer) > 3 )
* K9 X! W" A5 q
[' v4 I+ ?8 J/ K! k# s4 J# L
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# N+ ~% E4 u3 V/ Q! o! Q  N( y8 E, h[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 R# \- E/ D' [! V6 ^# w/ |1 o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 {' L9 i& Z3 `- b9 A5 L( y( E, r3 l
]
/ X7 F. q4 f) t$ c]$ x- i- P' n) c) }/ d
set global-proportion note
& h& I0 X9 E) h6 R" K1 p]
- t( Z+ k5 F; F" X2 q% ~$ V- iend2 t! m5 O% m7 @& g0 i
& e$ T: A! ?" d- u) z8 t4 T
to do-trade& E  U" v% f" Z2 {$ M" q6 g
;;
这个过程实际上是给双方作出评价的过程
8 m0 K- S* C$ S, V" p9 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 I: K! R" Y  k+ b; C. v8 S* Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 ^/ h* `  F7 c* R4 n% pset trade-record-current lput(timer) trade-record-current1 Q& M9 `; b* P$ Y8 {
;;
评价时间" r3 y6 C5 S9 e% J$ p1 q: r" d
ask myself [
8 J+ A; \$ w1 y) Eupdate-local-reputation
- d. m, E3 r6 K% Zset trade-record-current lput([local-reputation] of myself) trade-record-current% K5 ^( m% r! x6 X, C
]$ O) \3 N& k( V
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 }% V4 t- ~% i  u5 a6 q. c
;;
将此次交易的记录加入到trade-record-one
* e  o3 b" v1 j+ mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 U& m6 T& u4 L4 S( plet note (item 2 trade-record-current )
/ G/ b3 j  a0 d9 h( m  _- _2 ?9 Z" Zset trade-record-current
5 d7 `% u4 X6 _(replace-item 2 trade-record-current (item 3 trade-record-current))

; N" ]+ x/ u3 c9 v9 G7 uset trade-record-current% V+ ~; B; D! i" H
(replace-item 3 trade-record-current note)2 [; G- T+ h3 Q' v- b

* }: [& Z9 |  h: S# E/ t" e

* a9 q- a1 @+ H1 T* l, T5 o: P" u: q" Nask customer [. F' Q, F) b) A
update-local-reputation9 i& r$ \: E$ g+ \" p) G/ m
set trade-record-current
0 u5 R" b9 y3 }' J. I9 C/ O# u9 l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! T" n3 g3 J0 b0 c8 b# _7 L& W) }]
' q5 ~& Z( l7 y2 J* n6 ~" `5 @4 C( l% P5 ~
& X# l  e7 `( C, n) E; s1 R# x% a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, s4 j+ ~/ O& g, q
; S/ I* s7 p% A0 ?6 |- I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* W7 S9 h; t9 n' q;;
将此次交易的记录加入到customertrade-record-all
# s: t( q+ u7 A$ |; wend+ m( N  D" r; S" E+ j+ K
9 a/ T4 y2 l" m, }; p
to update-local-reputation  q7 y* t2 _8 H1 V& s! W( d
set [trade-record-one-len] of myself length [trade-record-one] of myself, x8 S9 _3 k/ O$ V) i
2 v2 J) W4 x' w. T. p2 M. G- R
, y: r( t2 s) F, n; N( }6 [7 r
;;if [trade-record-one-len] of myself > 3

# x% ~3 N" g8 q! `* g, o6 dupdate-neighbor-total
4 o6 ~) j" Y9 [3 ^;;
更新邻居节点的数目,在此进行
; Y" p7 l5 |; O8 blet i 3( K" }! @8 {0 E( Y( A' a
let sum-time 0! M- H1 L7 w( y
while[i < [trade-record-one-len] of myself]
! o" b9 ^- }3 f5 q+ W) w[) s5 {) f4 Y& f" c) d' e
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 i% g$ R+ K3 f. \2 N9 G; oset i
  x8 h; n/ u8 d+ I4 i; h( i + 1)
7 r% {! ~8 p  F8 q
]  |8 {6 K6 t1 N* n, Y* V
let j 32 e' Q) u" B0 v9 X8 ~$ }
let sum-money 0
) Z5 b  V5 W) I7 r! Awhile[j < [trade-record-one-len] of myself]  w* K% k! Y8 n  Z5 y' \
[, g$ f0 P9 K* h, `- D0 r, 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)" ]+ P9 R! [- a# q
set j
9 }* |5 M! @0 p( d1 D! ?' g( j + 1)

6 X! K: P3 m) G$ L2 {' X6 s! X]; e3 c4 S6 u" p. y$ @/ N- M3 p
let k 3
2 H% w1 Q9 k( z; W9 v' q$ ulet power 0
  }4 y/ I+ F" \let local 00 f+ H# t) I0 q! k! |5 I
while [k <[trade-record-one-len] of myself]
4 W9 y' H9 v2 P$ }/ D- t[
0 a4 F& F5 Z) B6 C5 ^; B  Yset 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% i/ ?0 P4 Zset k (k + 1)
& a9 L; z4 m- p7 \]
# M1 Z4 R' Q/ ~set [local-reputation] of myself (local)  @6 R$ ]8 D6 N
end5 F, L% |% x8 H1 C8 P1 e( z

2 B9 R" a: T! [6 P0 D! kto update-neighbor-total6 b% a4 D2 B6 ^1 m
& U/ |& |# Z$ k5 j, w
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 V- [( X( C+ m  m" w3 U0 ^6 O4 Y, e. d; P% d8 q7 F

* T) k0 \8 m& B# a5 M6 Fend
: V$ q' J2 {( O4 J2 B; h  _* b5 s6 d0 S' W
to update-credibility-ijl
8 ^: `8 r2 q3 H6 W. E
+ _' u) O6 [$ i- B;;
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。# k5 s+ [* i1 Z9 }! R7 ^8 i
let l 07 D- J! _- r/ |! N- n# ^
while[ l < people ]& h, h0 ^& F4 u) p2 w3 L
;;
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
' _+ n* K. u1 }" Z$ O+ q+ I1 ~! g[3 @' y: W0 h0 j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ z7 B5 x8 K* U5 P4 `
if (trade-record-one-j-l-len > 3)2 S7 g& e3 b3 W0 C  [2 x
[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 J8 _- N7 L8 j) T
let i 3
4 |0 D7 f. Y" l$ g: U- Tlet sum-time 0* i9 @- j* ?! ~' C
while[i < trade-record-one-len]
4 P% `% j. k- R7 V  v: T% g[1 M# X6 i- I7 ^* V, Q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) C* m4 |! k2 ^# m9 J3 dset i
3 @; C& }+ }, X4 f+ \( i + 1)
  n2 k0 k! O9 f8 [8 f
]! x; c3 u* |1 m) B5 X$ e5 e0 S( n
let credibility-i-j-l 0
' z" @3 e" |0 n1 a2 d) H4 x;;i
评价(jjl的评价)
  Q' ^5 i* P# D5 e: Q* alet j 3
& ]5 K- [& r1 H+ S2 C; a3 M( ^0 g! n7 _let k 49 V9 O& _2 [3 E$ d: i8 s
while[j < trade-record-one-len]
% `7 S8 v' f9 q" i* ^[, ?5 m4 E, z$ T: O/ T( \6 w: _0 a+ y
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/ a3 L& k2 O, G0 W/ t
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)
& e$ L2 p) `+ e$ I3 {9 Uset j0 C9 z3 ~' K3 U1 p& H) `0 T
( j + 1)
# c0 B+ R. b+ t
]. B+ ]; l+ D9 W" L: i' L
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 ))8 p2 v  W; J1 P" M% I
- K2 r2 s0 u' R/ z; u4 ~3 _

) q# B) ]# M& |+ w* a& tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 S9 S- V" d1 C;;
及时更新il的评价质量的评价
7 B0 o3 g' \+ |1 j0 n' Oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 S0 J: G" `; Z! \$ N$ s; dset l (l + 1)* h0 n& F# u: c$ J& h% T4 W  ?9 |" T- L
]
' {' q0 D% S2 a- ]- D' wend* r# V; S, t8 B( X2 @

0 _1 F8 N5 K' x1 K) V8 x+ jto update-credibility-list( m. ~3 n! h9 _
let i 0" @/ t6 l: T- z: j; A
while[i < people]  B8 L: m6 ~- r& h- Q7 M" q
[
7 u$ s7 \, S# M! l3 L! i& m8 hlet j 0
' s; @% A, u: r) X1 Z+ Y5 P) F2 ], glet note 00 d- {7 n* K1 q. I, B3 A
let k 0
2 a- R" Y) F, ]) U* D;;
计作出过评价的邻居节点的数目( L( R5 ~$ {- U2 ?( m
while[j < people]+ e  c5 n: }( V, V
[2 p! f* L6 F0 Z8 ~6 M6 w# `
if (item j( [credibility] of turtle (i + 1)) != -1)
$ i9 k6 b/ ^7 P) j1 E2 j7 B;;
判断是否给本turtle的评价质量做出过评价的节点7 \- ]0 n( G' x8 V; R
[set note (note + item j ([credibility]of turtle (i + 1)))# P5 u5 e- I/ A0 Q9 k+ ~
;;*(exp (-(people - 2)))/(people - 2))]

4 a+ V! `& I2 |/ s, @( e, t' \set k (k + 1)
0 I4 ^$ a9 p* r, l0 n]/ w7 q" f+ M; L/ [% o( G" y3 Q- P
set j (j + 1)
9 M6 E7 d! t) z4 p& X* Z" R]
" U; u# T6 l: p* c# H: N  h1 {% Wset note (note *(exp (- (1 / k)))/ k)
; o: E5 p8 H/ V' A! Z) j! Lset credibility-list (replace-item i credibility-list note)
5 d4 \- s2 r- yset i (i + 1)
- S" M6 L7 c- P]2 k* W% T- f$ w% J& n2 ~- z
end
& ?6 X# h& |! o/ ^, I- ~; d: D5 V$ ]1 h. X2 _) w7 l# s( M% e
to update-global-reputation-list4 _. g5 T. O* e8 z/ L
let j 0/ \$ @/ y& V. g# i' x( X
while[j < people]
3 _; J( i/ [( P$ ?5 d/ H[
, R! e! F# s: Y" L3 n% O) P2 Xlet new 0& ]+ y! D2 v/ r5 l
;;
暂存新的一个全局声誉) n+ o: |' _. t% D
let i 0
: A- d# ?( ^& O( ~let sum-money 0' C6 m% ^0 j/ q4 D
let credibility-money 01 S8 t8 B9 T* j' K: A' r/ J; q9 M/ q4 f
while [i < people]" d2 n; ]$ b, d2 L
[
, \1 k, j# e. Z$ D  `; cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ o, J" ]* |9 E8 s: N+ z5 O0 K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 M- g' r. c/ r% x
set i (i + 1)
5 q- u# H- H% b: J]
% d2 T+ ^3 U0 t: q6 \3 z# R! b) ilet k 0
4 a) I! H; W% F$ t4 hlet new1 0
2 N' g% h  I+ w) A. ~0 b& dwhile [k < people]
7 m% Q  `& i8 i[
; f/ `7 Z( Z* X$ ^) c( Lset 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). u/ d' m  L3 R+ g+ W6 y0 r0 w& C
set k (k + 1)# c( m* b. C, l$ n* [
]
5 x+ d, \* G# ]' r5 o  c# Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * j$ v* x+ E; k/ n3 {7 J7 j6 |* {4 j
set global-reputation-list (replace-item j global-reputation-list new)$ u" |4 C3 E' l; }: S2 v6 m
set j (j + 1)
7 W5 ~) j! A; v4 @3 T+ b]8 x4 U' D% E+ S
end
( H4 k$ X7 {+ X' q
- O4 V8 L3 P  Q& X: b4 y3 g! Y, f, N$ o3 \

& T9 k4 f2 @4 g: fto get-color
+ \+ b4 P* I3 s6 o% I( U5 G5 o, C$ ]& v# H. y6 a: M! G" D, g
set color blue
5 _+ H5 r/ X2 \& J3 [
end$ }/ L( U+ c( W
" n5 ?/ Y. ~' W$ s! g- b
to poll-class# G# t% D5 C0 |: q$ v: @
end# X" j7 Z5 \! s% w3 ^- _

7 H7 A7 U( z% V) O8 ]to setup-plot1
) Z' _$ R8 P8 q/ Z( i, R. A5 c! a9 a6 f( s* I
set-current-plot "Trends-of-Local-reputation"
/ z1 I- b: H7 y; Q0 k  Y  i% V* T
, V% h5 @  I, I7 x) L
set-plot-x-range 0 xmax

+ g1 o# u% Q5 [" W
/ L8 K3 K; H: T+ Oset-plot-y-range 0.0 ymax
' e( V& B& j! G8 v) e4 b5 ~( r  r
end+ ~1 S% F& K- T1 a9 d  n

* o0 d5 j4 h0 bto setup-plot2
7 m8 ]0 a3 W) K4 w& }, v: [5 ^% s: V4 h2 f9 B( k. ~
set-current-plot "Trends-of-global-reputation"

  q7 P) _7 `, |4 `4 Y
* |2 Q) N+ C& Q' s) Rset-plot-x-range 0 xmax

  K5 `. b* q# B* T$ t6 w+ E' k4 u7 u* r5 L: }
set-plot-y-range 0.0 ymax

+ {, \9 u; R% ^8 {end+ j$ D3 O* f0 h' d; ?0 J
( E% S5 A! t2 t* M1 ?* D4 i
to setup-plot3$ U# l6 G8 }' B1 N
9 I& Z7 z- i1 E6 v9 p# q
set-current-plot "Trends-of-credibility"
7 @' ?. ?& l9 k5 ^- C

* c2 \5 {; Z3 A% V7 q3 w$ e; ^/ H" S- Nset-plot-x-range 0 xmax
1 x' R# N# @% F1 Q8 O* n" ~
' F3 v4 B" S% U$ E, O3 k4 A9 O
set-plot-y-range 0.0 ymax
, i1 u8 b+ w- S; f+ w) f+ w; P
end
! c  M" l# O* t; _8 u" ^6 e$ k' y
0 e1 A) X' o. ?  i, ]' c) Tto do-plots. X1 O2 y  y+ Q! T6 B# D. S: @& r
set-current-plot "Trends-of-Local-reputation"  I6 o7 x+ S& d" X% [' e
set-current-plot-pen "Honest service"
( K) p) ]8 l: G6 U" E7 oend
- x3 X4 q& B9 ~* M7 _) [7 y6 W/ R. p3 w, q
[ 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.
% W# _7 G+ V. H5 s( W+ x# f( Z
- U$ }, D8 Y9 c# ?: l- Q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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