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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:' g0 ?* Q( A( a) h6 }: G+ h& z% m
to do-business
; [. \. v2 o3 E" W' K; B5 X! c rt random 360! C1 W( g- {3 _8 z
fd 1
) N- _/ _/ a) D9 Q2 Q ifelse(other turtles-here != nobody)[$ v% r) B# k  V6 P+ o
   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.0 h& k& h. r) Q- |5 g0 X3 @
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 H) i8 L7 p% h# z6 K: s9 P/ g   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) H  G! @6 v) Y0 w
   set [trade-record-one-len] of self length [trade-record-one] of self9 i. y' `8 u- j
   set trade-record-current( list (timer) (random money-upper-limit))
- D9 k- Z" a& K9 O( x5 O$ D; Q+ ~" g. @, P0 H
问题的提示如下:3 u8 ]. S" b2 Y! n/ s# z1 m, d

' d* g( I( g6 S: I2 M, \, J5 w& Rerror while turtle 50 running OF in procedure DO-BUSINESS
# r2 W" @/ l9 Y" u  called by procedure GO6 p6 _+ B- l* r, o% V& K% z. ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 D1 b; l3 B0 d& y' g' j
(halted running of go)
; C/ D& x6 }# S( C9 K+ T; i$ L7 h- p# G
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~~. i& q8 b% t0 J3 X9 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5 E; }; X8 X. _; I# Y5 T
globals[) Q) s/ y1 c8 W8 Y, w2 y- P
xmax
' e. U% \/ d* P' d: zymax, X# t& v" w( b* m* J  J
global-reputation-list
  l$ j# _7 a! ?* U4 t9 f/ F. ]/ |5 x+ Q% m" _& v  n
;;
每一个turtle的全局声誉都存在此LIST) i0 A. H; e$ G
credibility-list
' K6 L& L) \, J, T% O+ g, H;;
每一个turtle的评价可信度5 z0 ]- c* t4 R
honest-service
4 w- A. }  y+ K* t' Kunhonest-service( Q  C, y' d( b* g# I3 u' g7 e8 g
oscillation
, x$ y- r" k" i% X& h$ l) Y" K# Prand-dynamic2 O- G1 V# n% @8 I
]
' l6 P# A- W- j% c5 d* ?
7 g7 U- Q0 _8 xturtles-own[2 _& O$ S2 S1 k% x+ \. H7 E/ D& L
trade-record-all
$ N2 o% M8 t9 y$ X: I2 _  @( e;;a list of lists,
trade-record-one组成3 c- I1 c1 ~; u8 n4 t# p8 G( H
trade-record-one
% B2 j; s+ E8 v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# v$ r/ \0 X; I  Z) b( V  T
+ y5 u" P, h7 u( H- t+ L" B;;[
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 b* O- J  x0 Otrade-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]
; r) j4 `' o" i( P! Zcredibility-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( J5 |# j0 G6 F' `* {9 d
neighbor-total
8 U8 P. i9 y. t1 H/ M;;
记录该turtle的邻居节点的数目, u6 B# ?- n2 i  e7 ~- H
trade-time
9 [/ Y5 N9 k1 X;;
当前发生交易的turtle的交易时间0 j, q3 j: a0 y+ X0 h
appraise-give' v1 Y% ~1 F- A- r0 Y! Y
;;
当前发生交易时给出的评价: }& t8 s( {1 p1 _
appraise-receive
$ \! V  g% x# M2 \7 ?0 O;;
当前发生交易时收到的评价" n+ h% v' U  h0 C
appraise-time" B) q: P7 D0 F7 t
;;
当前发生交易时的评价时间
. E, T! b7 o! f- ]local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 d6 s+ }0 y& }1 q7 vtrade-times-total
5 o. Z  U" ?. @; L: r;;
与当前turtle的交易总次数
! f4 o. ?/ a6 K4 V: ytrade-money-total" d9 D: O! B/ _) p
;;
与当前turtle的交易总金额! [; K6 j% M$ Q" _; c; v
local-reputation
2 R# F- Y1 o1 Sglobal-reputation
! u3 Q' S* |' p1 v1 Ccredibility  M; p3 w; s) A( m; w) D
;;
评价可信度,每次交易后都需要更新0 ~; L/ R+ W) a( l; S
credibility-all
0 b4 E! a: O: P6 y+ K0 c;;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: k" U. P6 e7 y. N5 E+ r
4 m+ s. T- {4 j9 e
;;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0.53 U7 w7 m7 L# E( I$ G: ?
credibility-one2 Q+ @4 d- G. Y$ E. o: V
;;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# M( {! T2 B; X- ^0 Q
global-proportion2 D) ?% G- j1 q" k# E0 X1 f
customer. q; f  g" D1 h1 v2 D
customer-no
" H6 [: q# l4 [6 d' i$ O9 K$ ktrust-ok
3 A: n4 F  `$ u" K2 p  otrade-record-one-len;;trade-record-one的长度
& r0 Q1 D* n6 E1 V0 x]" u# f4 ^" i4 A

6 l& J. h5 C6 H9 Y( C;;setup procedure
' q# u% `) P8 I, R4 i: T, I% j% T2 _4 o1 w  a! v3 Z# n
to setup1 F% f0 _0 n/ e$ q7 `2 ~* a
$ J" k  N6 k6 ]) M3 h" p
ca
+ u  S/ H  \7 A5 K" ~8 W

2 m0 F4 _; G3 L" s4 P1 @! j' yinitialize-settings

: z4 g. [5 p7 K8 u+ f0 t$ ?% I  Z" r7 ]. W
crt people [setup-turtles]

+ u" a8 v1 @# }4 G" q; w- ^8 P1 T9 g0 p& ^+ k
reset-timer

$ z2 W1 R. I1 M8 u% _% O# R, u" @! U6 b* }. U2 O1 [
poll-class
& F0 y" O- S# _

  i; h! \) I2 ssetup-plots

. s7 g# H1 ?6 N9 g0 o- V6 R1 t4 _# P+ M4 d$ z" e, s
do-plots

0 t& g. \  A& D  J4 l8 xend
2 m6 w7 t* S( n% F/ ^# j. P& y4 t
to initialize-settings2 r8 r4 A9 I: M9 m1 V* _
1 i# ?  J2 z( H/ Z* O, ~* I+ P
set global-reputation-list []

" y, C, X6 m' o: b( l* A' D, T- k
& q! a6 A" [$ U! F' i+ Q) m- Kset credibility-list n-values people [0.5]

8 V# b* a( _% h4 W; J+ S8 I/ e& D0 ~; l' g- m2 A, U6 h: u! |; J3 g
set honest-service 0
' Y9 y. D1 V( D

$ V2 Z; H4 G) f! |+ Fset unhonest-service 0

+ C: i" }1 L7 @% D6 d; v  D+ p4 Q. P4 ^
set oscillation 0

. B/ k$ w+ o) p$ y4 ^. x
# w( f2 I6 Y) i: g4 b3 i2 Jset rand-dynamic 0
+ ^4 @4 h, |9 f1 B: e$ `4 _, ?. W9 I
end
! x3 [# c; {" r& K/ v; l( t9 }) {- `5 w) R5 `2 G$ i
to setup-turtles
: k- p  M( y4 n& w7 R, hset shape "person"
  r7 }" p( |$ z/ i3 {( p0 w8 Vsetxy random-xcor random-ycor9 y. z  b  ~+ X& `( d" S) ^
set trade-record-one []3 o1 y/ N* V8 a: d
- Y& c) M6 e* Z
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 I- T# @8 H. R( B) y
  b! [2 z* b$ Q1 [. Q& Y# A
set trade-record-current []; ?* R/ h, e" F; C% U$ c# e, C
set credibility-receive []
* V5 U  @4 b/ j9 |) W1 u- L% cset local-reputation 0.59 n5 W* y/ J* I
set neighbor-total 0
) [7 w3 }; V5 C  Yset trade-times-total 0: w* d* R  o5 C- ~5 ~+ k+ W
set trade-money-total 0$ a" D, e* p5 K2 a
set customer nobody
$ M% g0 g  J* Yset credibility-all n-values people [creat-credibility]
  u7 m& D. C" E6 U) o5 h& V  Oset credibility n-values people [-1]
: q  X/ o6 A6 k8 `. ^get-color
7 v$ M, t: d$ i7 d  O
) ?, B; U3 g. d9 v! K8 x
end
  ]9 d1 h% V7 h0 W  a" D4 s. ^$ y4 l* [$ `" `
to-report creat-credibility
9 c" X# v$ C0 c' e5 d, o$ b# Wreport n-values people [0.5]
; V3 _3 ]5 `2 M+ {6 F* kend$ ]2 Q1 {6 v: D6 W, i4 t; X

  O. y4 m" f) h# `: dto setup-plots0 {: F5 g  I3 V- [( a" W' P

4 |% z: b. L5 [: Sset xmax 30
7 U  r( G* G  F9 d! d( A
+ _% N2 ^. V& d( o
set ymax 1.0
; T' c9 a6 w/ {) I
8 H6 f  l9 r' b, \* g& f# `! u4 Q% Q
clear-all-plots
6 b' a; }, q9 h7 G

) O" Y* \  v1 Qsetup-plot1

3 B( _" f0 R9 m% @+ V
# Q0 Z3 Q+ ?8 C1 W; y# }: r8 gsetup-plot2
% `  L3 C; @8 G3 i8 e2 P! o
- T4 W4 N2 Y2 i8 b( h
setup-plot3

) S* p2 u: W; I" `# g: \end
0 A* m& s$ y4 R# y$ d$ m+ T/ [# v  m6 M" e, g% `  b  M
;;run time procedures* x' f8 m$ c$ a) L4 E
& t; m" M. y0 E; r/ U0 k
to go
: i4 P* d+ @  y( S' k% L% C$ g5 r' f$ F/ J9 t  ?: C
ask turtles [do-business]

: G* J9 _$ h$ n6 K0 p! ]! v3 Rend5 {; y9 ?/ M4 A" e. R
# b$ G& y" O8 q; H* Q- e9 c
to do-business
1 M# f5 t0 h9 G! l1 J
  y1 M$ s  g  f* R' ]! r( x
( q( o" L) v# t
rt random 360

" R; q$ e: s4 y4 z/ ~- O3 A& ]; x; X. d* ]
fd 1

  {4 o' W2 W5 o+ t; Y, x& q3 Y3 a* d% B& Q0 p0 T" F0 Q3 d
ifelse(other turtles-here != nobody)[
! Q- r' Y& M) Z9 Z2 {1 i; \
6 `! v+ K' V1 \) t; a( b
set customer one-of other turtles-here

  v4 N7 }0 _0 E( A
& F$ o" n' V5 z2 w" A7 D;; set [customer] of customer myself
5 G6 v* `0 h- E% `8 k
* s& y5 b5 w# |6 }# Z
set [trade-record-one] of self item (([who] of customer) - 1)
# k# `  Z- Z0 c0 P; W' m0 B[trade-record-all]of self
! |$ `3 I7 N% h. \# ]" V. i; F% \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- l) N3 `1 f$ H
7 v# P2 x5 W6 w) Y8 N8 R# W8 Eset [trade-record-one] of customer item (([who] of self) - 1)/ b6 H! V$ C5 R
[trade-record-all]of customer
/ R  f# P0 K* T% {: m7 y
" j% q, _  i! q+ t# d3 n
set [trade-record-one-len] of self length [trade-record-one] of self
  O, H; ?% e# A5 ~+ o

1 x7 p7 w, J2 E5 @set trade-record-current( list (timer) (random money-upper-limit))

6 y/ R7 x9 }4 G2 y. B: t  m; c$ Q4 I  _# p( h
ask self [do-trust]% ~* p) J$ e- ~
;;
先求ij的信任度% t6 D2 H" y- R7 x  ]7 ^  }
& J0 w: W, |1 B: F; n5 i
if ([trust-ok] of self)8 p7 a' ~9 z& q+ ~+ _
;;
根据ij的信任度来决定是否与j进行交易[
: G& _$ S1 F* s4 x& [: lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ ^# R, M! p; F. D
* Q5 m; B. N8 J! R. H- {: t[
. P8 {0 _" B( S/ V0 s; s' N
( M7 N* U) i3 V; Y
do-trade
: ]! J9 C2 T$ k% ]$ I" V" i8 X

6 H' E: g& l3 J6 |. M; ^: xupdate-credibility-ijl
* y( T2 d) b' f4 t7 p

( q( [, D. u9 a: C' K" e1 @  z& d# Wupdate-credibility-list
8 u% b* h# q" [0 P9 z, Y) T8 t) @
# U1 R4 v$ G) `& ]  b) h; h
/ L/ t' u0 n2 z# s( D1 H
update-global-reputation-list

: X2 ?4 y7 m1 v) V9 O
" l5 p) p8 I  c& e! R& ~  ^poll-class
" ^6 O( S# Z6 l- |! O; P

( j$ M* M' R. d0 a( vget-color
: x! o! x4 {; i2 Y2 m) z+ |

9 h, i1 o5 x6 o" H]]7 q3 u! s8 O7 E0 R
! Q( R& A5 J; |; g# i
;;
如果所得的信任度满足条件,则进行交易
4 w/ w9 G3 D: |/ k( q: |6 n3 Q
# P+ T) w6 Q) H* J[
( P% {" t0 F  p& A$ Y
' U, C9 h6 J: a' f& P+ F
rt random 360
" K, P: U, e2 h' H) c8 c
+ A4 U* v8 B  x* w
fd 1

( \- p  ?- ]: ]# n4 L1 Z$ V0 D2 H# K( V3 [7 N9 L% I9 Q
]
. [) i( E& Z4 x; I
( k! G' o! v) c8 x" B
end

  v8 ~1 [7 ]8 R; |$ m! d& Y: k4 ~+ T/ d+ }( G$ S
to do-trust 0 u: [& M2 o! w- R/ B! d
set trust-ok False/ S/ ?' X% @; Y4 @, T- \3 D3 H& |6 @) P

. [. T1 L# S# W% M* R) |& n( J' D

+ e* o* j6 O& |7 mlet max-trade-times 0
* J/ q. [: O1 w6 T% [0 J+ Rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& J# Y, V+ M" m0 r
let max-trade-money 04 E) i' p3 m- ?2 h9 x0 d( P% q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 w' X- T' D4 ]4 q0 Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 O& j* A6 Y! \: g5 m# s3 d* o. k# o$ ]2 A

* B/ D* V$ v' |6 Rget-global-proportion$ m% Z' |" ^% q5 H
let trust-value% X; h; E( _! I$ |% V4 w0 f
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)

9 Y$ y: L7 Z5 v/ F; L& S( S8 w, yif(trust-value > trade-trust-value)$ a# b8 X% j9 d' Q( f' w- j
[set trust-ok true]; f8 Z4 ?; y6 s' J
end+ x, y6 ^: j& p% M/ F- s* k; D

4 V  r9 j5 U/ D- B2 O4 N& zto get-global-proportion
6 T) [5 Z. v6 \& Zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), Q4 P  b+ F* a( i; p; a' r& j
[set global-proportion 0]3 O4 D; H0 d. a
[let i 0
+ F7 F1 {0 k% xlet sum-money 0
( o* u- {3 v) Y; L8 X3 u  _/ owhile[ i < people]
7 Z2 o  D% B3 k# C# N[4 _3 F5 c* c* T2 _" X; p
if( length (item i5 V5 H5 o6 W* U' P9 e6 L
[trade-record-all] of customer) > 3 )

% G- Z% X5 @/ O) C5 X[* p9 ?! q7 b1 w/ q) c3 r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* o, T2 Y# [) ~5 c* ~% @# j]
7 `) m8 J- T$ R3 ]: E1 o]
2 N3 x) B- A5 K+ \let j 0+ M; F, |1 L  d" L( i. U
let note 03 S: r! ~- M1 {  |1 G
while[ j < people]
+ z! M4 A. ?! T[8 {' O. ~* H' `
if( length (item i; ^) V& f. a* Y* Z
[trade-record-all] of customer) > 3 )
. R) H6 o, q7 b! o
[
9 |; e' ^" Z7 v* G" {$ }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 }; |# a" Q: j2 F% i! S3 j; ]: r
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ _7 D8 k/ A4 ?. Q& D1 `& b. w[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" B4 Q: x. W) C+ g+ F# ~
]4 A. a) X0 b% l* H6 g# P
]0 D( v% \4 l! @+ L0 z/ |6 r
set global-proportion note  o: D4 V, t( z# g  p$ b% t" |
]0 p" P" T3 d/ c4 d, W
end
: {# N. n$ R) {* n3 @, m5 ]5 ~7 u1 h9 R. I4 W
to do-trade
2 S+ u4 ?9 v6 \% h) S* M;;
这个过程实际上是给双方作出评价的过程
8 R! ~- H5 \  U3 U) ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 h% \; P" ]  O  B- q/ _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 }$ k! |+ J# N! H4 t: Z4 K
set trade-record-current lput(timer) trade-record-current. Z9 ~/ w# O7 ]  i
;;
评价时间; W3 p) _- q9 P  ^
ask myself [
$ B+ o+ W8 N+ @" D8 A9 `! yupdate-local-reputation" k* u& \  C8 {* e" c7 l
set trade-record-current lput([local-reputation] of myself) trade-record-current/ I( L9 s  f- ^' f  F. j( X
]
7 K( `7 i' H, R' [8 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 ]& e: I* I9 l1 U' @; {;;
将此次交易的记录加入到trade-record-one7 Y0 X: N- e, R# g+ X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 K+ b2 ]& f* {2 S) _5 Z. b* i
let note (item 2 trade-record-current )
) r0 K! x0 m9 E( H" u8 H( tset trade-record-current
2 b. B. ?# E/ z5 j(replace-item 2 trade-record-current (item 3 trade-record-current))
! u$ b% t1 x: `. \7 |
set trade-record-current5 O, E6 s( Q9 A5 ?. S  S
(replace-item 3 trade-record-current note)
# Y8 D, K3 j9 B6 c, m9 ?& g, m5 @$ s: y# j- U( z9 _3 J
% N3 O0 o8 [% ?" ^
ask customer [% ~' v$ r' F: L0 k+ R
update-local-reputation
/ `& c8 w# ]$ E" V- j# p" q: N' M3 Dset trade-record-current; X% L# x! V  I
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 \* r8 Z& P1 H]' G2 O5 l: o4 z) n; ~: H. a8 H

9 l+ X9 T3 Z; S  F- O
# Q( |5 L" O8 t0 [* f- z) z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& K. F. _+ X' w/ Z; g8 g

0 F: y# ^: u; r/ E0 `' n" Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( ~5 V" s8 E5 N3 y$ v; _9 O$ _( J9 P# k9 ~;;
将此次交易的记录加入到customertrade-record-all
- x- B/ @7 ^) f7 r5 Q2 Nend2 O* |+ h' v3 m
& U6 C1 Y$ U  R5 ?/ O
to update-local-reputation2 z7 G( k: r# W$ h, e$ _1 j4 R
set [trade-record-one-len] of myself length [trade-record-one] of myself
7 V, I8 T4 \  f, G. @6 N* c+ A* H9 ]" c$ O

" i+ A* R, ?7 V;;if [trade-record-one-len] of myself > 3

2 |0 L% K6 g0 V7 a7 |update-neighbor-total
6 V$ H6 m8 [! e6 ~! k8 C;;
更新邻居节点的数目,在此进行% ?/ ?0 \0 ?( x& W; j- \
let i 3
" ^9 x9 {3 v% ^+ W: hlet sum-time 0  P( W1 [( p* G' y3 v
while[i < [trade-record-one-len] of myself]
. \# W7 K, o0 r6 \; m/ n2 d% w[# j* Y- A, s7 D# P, I1 f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' B, ]$ o. r7 r  b9 g  y
set i' Z# a! o0 v" _) z9 f/ _+ j
( i + 1)

) {- w& ~: h% j3 i7 r* \* b/ e]2 {* w. V1 m/ Q$ W, H9 ~
let j 3
) p: A+ ~1 n. Vlet sum-money 04 [( l5 ~1 b$ m! d
while[j < [trade-record-one-len] of myself]
+ @  j( o2 T! X- r" ][1 P# J1 H" x1 H
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)
. L: K& @8 M, Q. Dset j( f! M+ w2 S8 r* r
( j + 1)

7 f/ t  u' Q* h0 j( G+ V5 R]- J3 @' R# ~& A1 e
let k 38 K: b) }; w/ z) i! Q
let power 0% ]/ {1 u) A9 O) A! D. Z
let local 0( a, v! j& e3 B8 _
while [k <[trade-record-one-len] of myself]  j3 l( N  ~; o
[
% k( Y  K9 C# S9 x; Q# H; i8 w- uset 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) 6 T! M7 U- F* \- p) f7 j4 V
set k (k + 1)4 n2 @! v. O/ A6 e- c
]1 f  d0 g* V& f5 Q
set [local-reputation] of myself (local)
; R$ B0 Q" w! V4 {, v/ nend
2 c" K% X( P) g7 I1 D" y8 b
4 s3 ]( u1 C* ^! |4 m' xto update-neighbor-total
- D! N% n' B2 J) c: c. ^! {$ d$ |
% d( s. X, k- s! o/ O0 b9 ~) dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& K$ n) Q4 I: ?0 |# ~

) S5 \* E4 A. c
& @0 h" g4 [8 S; g- X0 \* o) d
end
1 |# u; F2 N4 M' D! e# I
% t3 D& |9 p/ H: w+ e% L  d& Q  wto update-credibility-ijl . o+ ^+ F: L# H" l
  x- h9 g! v  W" q
;;
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。* M( b2 _+ S+ P4 G# P+ c* j( m
let l 0, }. C5 n* {- f' d
while[ l < people ]
; ]0 M  C6 Q. O- S1 A. z;;
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' @  t% v, M+ o$ m) E/ r
[
( c8 T+ E6 L: Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 O: F. |4 u0 x: I- i) [
if (trade-record-one-j-l-len > 3)- K: h" ^0 ]+ s0 S3 e
[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( f8 Y9 W2 ]6 m0 X; }4 V" B7 C
let i 37 [0 Z3 p& b5 j( L5 z* m9 o4 L. n
let sum-time 09 J/ q! M: u' {* c" m6 {
while[i < trade-record-one-len]4 R6 b0 P- @6 J
[
* X9 p" |4 D, Q2 V' {# j" tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): i) ~( |7 T$ Y% |" K- U0 E
set i
* R5 `) N- X* [. T$ t) w( i + 1)

" q- J  X' o8 d]6 p* N0 |( m1 x5 Z. m% Q4 C2 g$ H' T
let credibility-i-j-l 0+ j1 q; w, B3 e; g
;;i
评价(jjl的评价)9 A4 ~! p! ~; w4 F7 ?, S1 m! T9 f6 O
let j 3/ q) y! l% w% ]+ W& A3 @5 o
let k 45 \) F  z  k) p+ p2 g3 n  `
while[j < trade-record-one-len]9 `5 Y. V0 Y- i8 Q$ ]3 H
[
# C$ l/ S3 L; k' j: Ywhile [((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9 \: e1 N+ f; l$ u8 E4 C5 s5 [
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)
* e2 @! I1 h+ I" |( Yset j
9 V' F! U" y/ w: M, d! ~$ X% S8 C( j + 1)
. H& [# W- u/ P
]
3 M) o" U4 L6 O. |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 ))* L! n: Q1 U7 |( t/ G5 h

% G/ e( j5 C7 Q% ~/ D, I
: R  i6 A* C0 i6 ^  x$ |
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# A% _/ T& w, q& G  w- u;;
及时更新il的评价质量的评价
; w* a, z# f+ Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) u; s" U3 P2 W0 a6 h+ k" H; }8 kset l (l + 1)
2 J' w2 I" S& d]
& K- r% P! i2 ]end
! z3 Z: A* x5 |( q4 _) C) `8 \
9 C4 [* L0 d; F. @to update-credibility-list
) k% J7 C5 l$ T8 r$ U, k+ u3 w' ~8 ?let i 0$ M$ v( P: z* Y; T! b
while[i < people]/ b* t3 x+ G, ^
[6 M* x: o2 s* ?
let j 0
' ~) p  r& Z# `# z" _' S/ z7 zlet note 03 q4 Q# p/ ~+ C% C1 F
let k 0
. ^* Z4 ]% z+ N- C;;
计作出过评价的邻居节点的数目! W- k, e+ _8 _$ }- H9 B
while[j < people]
8 a. W4 }2 Z, t( J6 C: s[
5 E1 p( Q4 V+ Cif (item j( [credibility] of turtle (i + 1)) != -1)
; |& Y$ K/ s6 c3 v) N0 E;;
判断是否给本turtle的评价质量做出过评价的节点9 |/ |/ d9 ?$ V
[set note (note + item j ([credibility]of turtle (i + 1)))
& o' t8 k- ]9 F; U0 Q2 m+ W+ a, ~;;*(exp (-(people - 2)))/(people - 2))]

5 R8 p1 d+ P( t3 R" }+ ]5 C* b. s( Fset k (k + 1)
+ m: d  }0 i7 ]; M& L% U% l]. O6 W. D# n) o& h; _
set j (j + 1)3 `& e. Y) U9 e+ {+ D
]7 y6 ?, O$ m) C" S. X* l
set note (note *(exp (- (1 / k)))/ k)7 y0 [& ]* y! g$ A  M
set credibility-list (replace-item i credibility-list note)
; r6 k' ~7 c# q- @set i (i + 1)/ y1 e/ ]# Z; p* j
]
) c4 O4 i4 B  f9 c$ b4 Xend( \5 \( y; Z& q$ K! \) g, j; H8 g

0 V: l9 [& a' S# k% @' vto update-global-reputation-list6 q5 v6 u( N; _
let j 0
9 c' y6 P! m; v, I& Awhile[j < people]
2 K5 e# Q4 N; h9 S% `3 p[' a9 A$ u% ~; [* m  j- S5 `
let new 0- b9 C! Q& w  V) {! f
;;
暂存新的一个全局声誉0 H* Z+ B1 F+ j* e  o! I, @- \  i+ B
let i 0
/ F0 D% g2 f; f9 N. Alet sum-money 0
+ v# N+ m! `3 C. i) l- j- K0 z# Clet credibility-money 0
' p, p2 U' U4 e* o, mwhile [i < people]2 y: J* c: M  O3 {3 e
[
/ _. \, \7 ^/ Rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 A( x5 U3 r: `; K+ ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% h+ [; K7 f$ w9 K% K# a5 z( Nset i (i + 1). O2 I. V6 B$ m3 S- I) D8 u; r6 g
]
# a" i! I$ {/ `let k 0! Y1 s4 Z+ n3 ~: _4 |; @5 v) w
let new1 0
. o/ s! f3 x9 |0 a7 q2 Rwhile [k < people]
6 D7 [9 V4 q, S# E, l" n[1 I8 y/ B/ B0 k
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)% m* t& x( E% I' `: O' b6 N4 g' I
set k (k + 1)5 L5 `% r* {; R- c* F
]8 N8 x9 |/ `, x4 ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- D, W7 m" C5 D0 tset global-reputation-list (replace-item j global-reputation-list new)3 k* z/ n+ f+ u! c5 z
set j (j + 1)' l0 t/ A7 C. L1 i
]
0 H* R1 }/ T1 u8 Q; Kend
) r! u4 c4 X# a
; u9 R' X" r0 U8 P9 L" h- G
3 c4 A# P. W4 {' H9 g7 f. ^# b% J# h9 o
to get-color
) n0 E6 y! J: z' I, L+ G3 T. S
2 c% D' a: J! U* ?set color blue
6 C  J& M1 k8 r+ X" P0 B: G
end
5 D6 X& G" f! x9 q% e- C/ U# V3 d1 _9 |0 ^9 j9 E, m
to poll-class
0 L3 Y" Y: ?" @, M" Y; Gend! y4 S' i2 K7 O2 I( R

. J; X# p- [$ f' j6 Jto setup-plot13 V2 H6 Z6 U9 l# \
- M+ @5 v, Q0 T; K& ~
set-current-plot "Trends-of-Local-reputation"
; T- }7 g8 H/ V8 @* A

0 J+ j- Q. S8 T% ^0 N4 t* \* Yset-plot-x-range 0 xmax
3 @3 _+ J# W0 u0 l, e  X
) b& K7 L) f' ^- J- p' R% M( b
set-plot-y-range 0.0 ymax
' G4 j1 j8 S2 r; Q
end1 u$ Q. D  b3 n5 p7 h
7 p& Y# X7 O8 b8 C) ~! ?: ?
to setup-plot2
/ Q5 ?1 a' c: A" [' \) Z$ E9 x; @- l, T
set-current-plot "Trends-of-global-reputation"

0 s. R9 M- V7 g7 R
; O; g0 m- C2 q- gset-plot-x-range 0 xmax

9 {4 U( K* V! Q2 p) `8 E( K3 k. X0 ^7 k# _: X* I
set-plot-y-range 0.0 ymax
  ^) i0 A3 c, ^& \
end8 |  k* e$ v2 }; I& J

, E. t. u; G. w3 H+ _+ M% nto setup-plot38 r, O4 E( o( G  l' A- z) T6 L
9 ^4 Q# T0 E  R8 c6 d
set-current-plot "Trends-of-credibility"
. U$ h! n3 D4 }1 o# L4 Q6 k
, M* B  O, ?6 H$ Q! M- {! {
set-plot-x-range 0 xmax

3 ]3 {8 a7 R$ M7 l; p
' Z( a  {; Z) L& W0 xset-plot-y-range 0.0 ymax

' |' `- [, U& r# Q5 Wend+ R) P# ?7 y" D, C4 M' g, {
1 ]2 ?4 p4 t9 x, u" g5 N
to do-plots
4 z4 o% F& D, a9 R! n3 ~set-current-plot "Trends-of-Local-reputation"
; v( {" \) F9 J0 j6 Nset-current-plot-pen "Honest service"  Y+ I3 K' k% F
end' `* n6 z+ Y" _" y

6 U3 U: P1 {6 ?/ w5 K9 {[ 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 M6 T% z/ l) m  z5 ]1 e8 k
3 w2 r) `4 U: S
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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