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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:
8 d' t( y$ h! W) O- W: Gto do-business $ a2 a" ~% `8 T
rt random 360+ n# u& y$ B+ h( R/ k5 ^- ~( G0 ^
fd 1
4 T8 t5 r& ^* y0 ` ifelse(other turtles-here != nobody)[2 _& M  k5 R6 q/ {) ^
   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.
) d3 L7 r* A7 y4 H2 r1 r$ F5 F: x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) a; C8 k' l" w7 v$ e+ q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# f9 \  C1 i; }! \8 u) T1 W4 n   set [trade-record-one-len] of self length [trade-record-one] of self  O# T+ ?  e, p( [/ D% @
   set trade-record-current( list (timer) (random money-upper-limit))9 H/ z# ]: }9 y3 K$ H' G8 N
/ c4 ^% c, V& q" v0 d. a9 j
问题的提示如下:0 w  B3 L5 p. n3 Z* a8 n+ k

' K1 n7 R$ w7 h& _error while turtle 50 running OF in procedure DO-BUSINESS
3 k7 [9 b1 M0 k( ~, [+ Q+ f  called by procedure GO# |( w& O) S0 E4 e5 ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 u0 A# i3 P9 b2 d8 G1 J* W! w
(halted running of go)0 x- h1 A$ ^! `9 ^

5 E% W( b- Y" H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~~" y2 a: \" j1 {; L) E
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
- P7 b6 I& j4 H* f' Nglobals[, n: J* J# A8 h8 _
xmax
2 s9 c# [% t$ J+ W+ oymax$ D" S% p6 o0 u; Z! h
global-reputation-list
2 s* {& m5 o" z; N9 l; c" O0 F  E& W
$ n# U0 y* Y" K4 d$ ^% R# c;;
每一个turtle的全局声誉都存在此LIST) k# t' Z7 U, [* a
credibility-list
5 O& \* |+ S" n3 \3 H;;
每一个turtle的评价可信度
$ n4 w2 N# x" h! p, a# e& g6 J, N. nhonest-service
0 @4 E, N7 |1 Y8 A& p0 iunhonest-service
) F% D7 m& }, foscillation
4 l  E6 ?4 u! g, h! f) W! Grand-dynamic
2 B' f( M# Y* d& s0 t% E]1 `# N1 q) z+ i$ L* R7 Y& t1 ~3 W
6 b# ]% E) a& X7 W, }
turtles-own[
* |* \3 \$ j! S5 E* C! {trade-record-all+ d$ r& s2 {( o6 H
;;a list of lists,
trade-record-one组成  g6 q" X# q, s  I6 Y
trade-record-one
$ q! j4 W: U  x' |: @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 c3 I  D. |9 E/ f9 Z! H1 |- `
% Q/ }: g) ~0 f0 b* W( ?;;[
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]]& a4 M6 m5 V/ v& E3 |4 {
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]
" ~" ?& ]3 S& J  Ecredibility-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
; c1 f& l; T: r( @5 n- V3 ~$ Fneighbor-total
: A# z! i1 s9 q; [;;
记录该turtle的邻居节点的数目
% j5 O: M# R2 o# D0 _* E% etrade-time
& {5 R- x6 s6 E: w* [;;
当前发生交易的turtle的交易时间5 q0 ^3 s8 X! g
appraise-give! ^- q8 l: ?! H% I' ~
;;
当前发生交易时给出的评价$ T3 q) U0 J( S: x% o# r1 z
appraise-receive8 D: `$ B2 L. e4 q. o
;;
当前发生交易时收到的评价
$ l" ?! U" P, E$ K3 ^appraise-time; H8 x" V6 R9 K1 _: n* w: V
;;
当前发生交易时的评价时间
2 R6 P, h1 l4 S7 C; t+ `. F9 Wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
" P/ [. X3 P  u" K+ G  F$ e1 _- Btrade-times-total
8 p) ~7 M8 N, S;;
与当前turtle的交易总次数
- t/ j( w- j0 {. s% b( Qtrade-money-total  R2 c( s# s# ^: }* w% \
;;
与当前turtle的交易总金额
! J; F& D5 j$ x9 t6 Ulocal-reputation4 d: {: O% S( B5 c
global-reputation. f- t2 `- j" I" Q- [5 \/ F
credibility
. A+ r7 R& w, Z6 S;;
评价可信度,每次交易后都需要更新5 y8 W5 v0 e$ I- ?
credibility-all
4 w% h( s) R: \! y# J2 o;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据/ z: F2 S3 ^$ k6 _3 `, G) U
/ U4 X" w0 J' B' t8 @+ x
;;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 f! u+ o$ w9 ]; w) _" d
credibility-one
9 _* T. ^  K+ g. F" d;;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: z" g7 [( Z  X7 ]" r) j- v( E1 q
global-proportion
+ N# \1 k0 a( k( v! x8 W% ]customer
3 |* N1 ~& E, c# m5 hcustomer-no+ d! A5 z; x$ i' P
trust-ok& l+ x! ]; e( J
trade-record-one-len;;trade-record-one的长度
4 I/ n3 \" K4 e! }* W! h]/ B" ?* S! j& ~) l& \7 @

; ]& ~% C- M8 u0 ?;;setup procedure2 [' ^6 ~6 |1 ~- M% S3 H

9 K6 z- ~0 A' p9 X5 U# t/ E2 cto setup  M4 C) e, ^& y, N8 r( @( [

. w/ U$ {9 M8 `5 P# K3 L- a" ~ca

& p8 x4 t& c8 \4 M3 c) C( O
) A0 q- B  R, D9 @' {% H1 X5 R/ I+ Binitialize-settings
8 _, ^- ], ~9 b8 d7 p4 g

+ G8 X9 T/ a+ X" D% |/ hcrt people [setup-turtles]
" z6 m; L0 k0 R$ g3 H) C* w

7 j8 G. l- O0 oreset-timer
+ O$ Q; d/ u& X' n/ O

- S% W6 |8 o' x$ Qpoll-class
& ?! k" H/ F2 y8 \/ n

' |; i! q- n) d1 U- z/ l) Osetup-plots
# d# ?9 d! j& Z2 {/ x0 o
3 {% t" K3 l: |3 d  p' ?+ Q1 [
do-plots

/ A/ {0 l9 R. mend8 \5 K. l2 t3 v  a: Y: d

$ u* W$ m5 Q! |) Zto initialize-settings
" X7 U' S3 s6 @  {# M# e! w
# h+ e" t9 ]; Q5 Y. G; j3 |. C* \set global-reputation-list []
$ Q7 w3 J0 s* c  }' K" m

  E3 y" @+ q9 R, q, X: B# i0 R, Jset credibility-list n-values people [0.5]

0 @2 P+ c& P  o5 A* j' W& ?. M8 c( D! i! D2 [
set honest-service 0

& x- @: S; p/ h) B
) L" O# k+ c, z& N8 mset unhonest-service 0

6 V" @' J5 P. o; Q9 X/ Y0 [. ~( A( C$ @0 v7 L4 r2 e" w4 @
set oscillation 0

- H% c4 @4 P8 E9 ]& X" c% M
7 w# M2 r) G, a, ~" k# z8 [# a  oset rand-dynamic 0

% A0 L$ D, ?& _) y& iend! q3 l8 T9 ^- m* |! X/ R
8 V% \" Y4 f# G- g1 A2 Y& X4 `* F
to setup-turtles & k7 [' P* H) H% W  k
set shape "person"
" r' M9 k8 r/ U' Lsetxy random-xcor random-ycor
8 v# B0 R1 B1 _$ `5 D7 jset trade-record-one []
. o6 h6 E+ }. x/ w5 V5 d/ @

: g$ c8 M% |  Q: p* q, vset trade-record-all n-values people [(list (? + 1) 0 0)]
2 Z/ _$ q6 _* {

/ w) B% o' T9 J6 w; d# gset trade-record-current []" v8 Y$ Z& y. Y* y' T, j
set credibility-receive []1 F# `& R/ X$ z9 v% n& X
set local-reputation 0.5
4 ]: L/ G* g7 N- cset neighbor-total 00 ^- Y5 a7 c: c% Y
set trade-times-total 0' S0 E3 v' Z, q9 m: J5 q
set trade-money-total 0
! z- Z9 a4 s& @& z9 t: uset customer nobody
4 G5 y8 n% W" ~: k2 D9 X: y* y, gset credibility-all n-values people [creat-credibility]( [* }( E# |+ m4 J7 N) m; M# ?
set credibility n-values people [-1]
: A  S# R) C! H  [/ l3 Nget-color
/ N) ^8 u8 w3 G/ U
, y/ w0 ~. }+ E
end
* N( R8 ^7 h; `+ u9 H7 s4 K
5 ?5 `# g1 b5 Y1 H" Y& Tto-report creat-credibility
) ?4 V% y( Q. Q- Mreport n-values people [0.5]
9 a* E% Q# y) e1 }  U4 _end3 W. y& z: x5 ^) m6 `

1 e$ n$ _$ P- }! x% D  bto setup-plots
6 x% d; L+ v0 ^9 [# l0 k2 {+ L7 [2 Z
: l7 J  D4 z  x! I4 d7 @& R- j: wset xmax 30

2 n) T  I# X" f+ C5 Z1 x+ R3 E6 P6 F& i) b9 B2 k, _
set ymax 1.0
, _. H1 s& D: @2 K) A0 T3 N

- ~8 W' L  k6 N4 Rclear-all-plots
! t- n& x4 w. W" K6 k$ e
4 \7 T& M2 e- r. B
setup-plot1

5 ]  E0 P- u' o0 V3 C1 ~  _: x  L) x5 Z+ X( p- l' m
setup-plot2
) k# ~+ e0 O0 p9 u
$ y; B7 d# R" o' T. T( w0 V$ ?
setup-plot3
% _5 u- j$ ~: W# _4 y1 z
end
- I0 ^. O7 U1 V, D. C7 X. y
7 D' Z5 O$ k- r/ [2 ^& w4 U/ t- N;;run time procedures
: B) i; b+ `2 I1 p7 c4 K  I4 w+ r
to go
( n+ D2 b! D$ y' B3 F# R8 t2 Y. f4 D9 Z' e- T
ask turtles [do-business]

1 \8 L% p1 _$ gend% ]) O/ U' `! }, Z, x, e
$ g5 ?+ P) L, }# R  r) c- x: a
to do-business ! s2 w) {! P" b% ?$ a: n

1 ^, W3 Z7 H+ `9 z, Y
" d4 a' G$ @8 b& ?. G9 Nrt random 360

: U" T, o; b# Z# ?; C: T. k" |
5 M! Z( N. x% L* Hfd 1
( E& c9 N5 E% i
6 ]. z7 }# V: ]: q" p* E
ifelse(other turtles-here != nobody)[
. H1 G2 w; k3 ~
7 j' b! j4 F7 v! {' b1 [* r
set customer one-of other turtles-here
8 p8 F" y1 b6 z8 ]' F9 V7 X4 |/ A5 {
" A" h( `, b; i6 v2 a( ^
;; set [customer] of customer myself

8 b" P# l1 y) j$ O9 Q" R" t( ^! G3 t  l9 Z
set [trade-record-one] of self item (([who] of customer) - 1)
$ K) V3 q& X( @( D7 T2 s[trade-record-all]of self; o8 |# q: p; O7 f$ f! @; B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 i3 r6 t" m- i: `* z3 {4 ~

9 b/ F  `2 Y2 K+ y( Gset [trade-record-one] of customer item (([who] of self) - 1)
* z3 @$ b7 S! j! e+ f, [$ Q[trade-record-all]of customer

  }; v- }4 i! N: y) w$ g
) V( D% u8 W  E/ m) k4 t% z2 Sset [trade-record-one-len] of self length [trade-record-one] of self
3 P5 L- ?& B9 Y; W, o
: s7 Y) Q9 y" r5 `
set trade-record-current( list (timer) (random money-upper-limit))

' h4 Z8 h4 O% k7 q% L# H9 K/ i$ N$ O+ q, X+ g
ask self [do-trust]
" @! b5 k2 x( A4 J( w: f. B1 e;;
先求ij的信任度
4 M4 n7 O# H$ }- r0 ]- m2 c6 T# ~8 m% C* d& _# `
if ([trust-ok] of self)" M* ^: x: e$ t! H: |4 q
;;
根据ij的信任度来决定是否与j进行交易[& x& ~* I2 g& S; ~1 |5 D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ R" J: M7 c2 S% d9 P# w/ M
7 o" w9 r/ _9 L7 R" F
[
" u9 T$ s3 G) h8 X9 E

+ ~: p  Q1 c4 o4 m1 \do-trade
4 y. G( g# x5 a5 _0 U8 f

& R) t; [5 Z" ]1 G- W) Yupdate-credibility-ijl
- B/ w: a/ @& y8 L4 N

+ H* I- Q( Z- _, j; k/ {' P/ nupdate-credibility-list; f. o/ R# Z1 ^/ ^
: N) e1 L+ f) K2 v  J
* a0 U7 y& S; \" Q" F
update-global-reputation-list
- j) A' A) a& u+ L9 `& O( u- g( o
9 N1 {6 J7 h5 G! e* h
poll-class

8 x# D0 m$ g6 x- r* T: d; ]6 @1 ~, I) s
get-color
! R* K9 C) N! N
& S2 l4 R5 r- U6 ^2 _" F& y9 a
]]
. {( J& g8 E+ V+ w4 r1 ^) p+ W. x0 [  C  ^
;;
如果所得的信任度满足条件,则进行交易
8 c  i. c/ Z. N6 S7 g; k2 n$ w( c; e; R$ o) r* X8 Y7 N* E2 t% [
[
0 m  V3 G3 `3 P0 Y  P2 I. `: F

/ q6 M* ~9 Y8 v* [/ B/ srt random 360
; H5 f! c; U; N7 k
, ^7 `4 p( w- x9 U- w! t
fd 1

, v7 U) l1 ^9 x- {/ `/ T
8 b+ z) @% p- B3 h]
! u9 ?  X  G) V5 H- y
, s$ t5 s% }7 q2 d. P3 _* j
end

) @; ^, ?$ ^* T# i2 n
$ D. p" g. b% Y% pto do-trust ' K# e: r) Q0 \
set trust-ok False
9 }, d5 }8 S  i1 O% Y: E& [
$ x  O% ^, A; L9 F; d

8 Y4 d1 ~5 C7 G! V4 n0 i2 Tlet max-trade-times 06 b3 R; D2 q1 N3 g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 X5 p9 E+ a8 l5 M( \5 Nlet max-trade-money 0
2 ]4 }4 F) U9 ?! `8 F! wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" {4 a. d3 {- g3 p) p
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) E0 @( F4 `( ?& ]: e
0 {5 E! t1 q  Z6 Z% y- }0 v
, _4 Z- C2 V: \2 r4 J& }, D
get-global-proportion
0 t) S! C# @4 A4 c" ^let trust-value
  v1 B5 _3 T9 `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)

4 b" o* ~  t* Y8 ~if(trust-value > trade-trust-value)
% H; r: m, i7 @& X[set trust-ok true]
  e; c( C6 J9 Q( D% |- E5 Pend
; T# n# W, W: g1 {: U- J2 ~* @- ^1 O' E: u9 j$ |( U% S+ E4 Z- r
to get-global-proportion' I0 q2 L; Q. R; }
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  ^1 l8 o# s- I% `
[set global-proportion 0]
3 ~0 x& b; s( e: R8 n& ^  S# b[let i 0
! r( A( U, y! B  a- d, T. L& clet sum-money 0
8 l  t8 F7 ~+ d! h) s( qwhile[ i < people]1 Q0 U; h+ N+ J7 u: z( ?
[
' Z1 }+ `* [, C. r4 {" ~5 uif( length (item i
$ T3 b1 j# F( s+ R3 ^[trade-record-all] of customer) > 3 )
! J4 G; E& |0 G
[- e/ ^3 B6 E3 r. B  e: S/ W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- {, ~+ h0 F( n8 o4 a]# b# y3 l6 G- _  e6 R
]! m; `" x+ \% N  ?1 _8 ?% Z0 L3 c& v
let j 0) E( w7 G! `& N* F
let note 0
& N7 r+ B1 p" F2 V) G  Kwhile[ j < people]4 u% p2 ]5 ~/ r: l: ~
[
  a" B) |& ?; C6 Cif( length (item i
# k$ F9 x' N5 v% g4 T[trade-record-all] of customer) > 3 )
) j& W( {9 o' K+ d  h/ C, l
[  b$ D: T3 p6 e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. o3 c7 ~) R' L1 p2 M; w[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; q  t$ R8 x9 h) r0 d  \1 Z7 E9 {( O[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 t4 i4 h; S, O1 J% n! O) []5 C7 q3 Z4 f$ S% }8 B; ^
]
$ r$ L8 {5 G* oset global-proportion note
# w% l6 ]2 e9 |( H]
; l) T  X0 q, D+ f/ ~end  \2 G/ T1 W( L! ^

* `5 H; K$ v( R0 F: ~to do-trade
  D0 Y/ J) J% J* n) ]+ G;;
这个过程实际上是给双方作出评价的过程
4 P- h* u& ?* Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 t: D2 D) X4 C& U4 e7 h( bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 y, @+ b% V4 m; Tset trade-record-current lput(timer) trade-record-current8 A- X* }% c/ E3 F! x
;;
评价时间$ s2 e: U$ x' @* C; W1 N; ]
ask myself [
2 }" x  |, `+ X- f$ J7 N8 q- y* ~& oupdate-local-reputation2 W3 A" x5 w# |/ w7 Z" y/ }
set trade-record-current lput([local-reputation] of myself) trade-record-current
& C  \4 p2 |5 l) f) W9 M- M9 D]
* l4 ?0 v/ s8 `% Z# R; m4 \set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, U; C4 K: B/ x( e& x/ C! Q8 i0 Q;;
将此次交易的记录加入到trade-record-one) x/ Z7 o0 H# [  L+ ?$ }
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): q2 x! Q% k3 G( m* T) V6 s
let note (item 2 trade-record-current )
: g  ~; \% V7 l  l/ e" ]set trade-record-current
& \; |9 b' `2 q3 W(replace-item 2 trade-record-current (item 3 trade-record-current))
% ?  J8 `8 b% \# A
set trade-record-current$ a7 w$ {+ \: j9 x7 A% g
(replace-item 3 trade-record-current note)* a) N+ a# I3 W

: r5 p' ~4 N& c! J
4 ~' q1 O. b* G* @
ask customer [8 [, d1 a& |3 G5 T
update-local-reputation1 v0 t4 T4 _- h+ c6 k3 Y
set trade-record-current5 {1 c0 j% t5 Y  {. u1 F
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, K3 X# e: ]6 X  Q$ `1 o
]
5 Y$ Q/ L1 t+ c4 |; [+ D$ }5 c. ?( s3 z" ?0 Q; s

5 I& {* C$ {: h. s) t6 F' eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% _* U) p7 h. j
7 L: I* d2 R; I7 ?
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ ~! ?( C1 @! Q6 o: C  L
;;
将此次交易的记录加入到customertrade-record-all
. Q1 X+ v) g4 ~9 |, cend
- h/ u5 ]) H  l
5 D  Y0 i2 z9 F$ u8 @% a) Wto update-local-reputation
  c* e. K1 r$ Wset [trade-record-one-len] of myself length [trade-record-one] of myself( b; \* g9 ~9 x' F

  x& D) y: B( r# Y. N
% h* }$ i; m9 g( H8 x0 \* G- M8 D;;if [trade-record-one-len] of myself > 3

. \3 q# p# \6 w: Oupdate-neighbor-total0 S, M. A7 P# ]3 f( `( Y
;;
更新邻居节点的数目,在此进行7 Y- ~) r6 @/ h, N, X9 ?
let i 3
8 }# ]5 m* F2 d0 L% i& klet sum-time 0
' |- J+ e& @0 @& j3 `while[i < [trade-record-one-len] of myself]
* E2 J% ]4 @+ [, J% l# y% _  b& D[
: @! I& O; m+ Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- A2 `$ I3 T$ V) L  Uset i) u4 r+ ~8 z7 _3 }  g! B( v2 J2 H6 O
( i + 1)

' G! d' o2 ^2 C3 r$ _) Z: z]
  d7 r$ @3 f% Slet j 3
; M. a5 s2 _4 T' [; }7 ilet sum-money 0
% [( {- N# {1 h5 ?' K2 Owhile[j < [trade-record-one-len] of myself]- P( }' j  q. O1 k7 H
[; U: T9 K6 v" {! F# N' ~
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)* b% h# Y" y0 p
set j
( l, w4 `7 n/ B( j + 1)

9 F8 q% M1 Y; u: I2 B]8 a$ R. [3 i7 m; p/ v' ]/ `( c/ C& H5 p
let k 3
) T- L! E# Z; s$ Mlet power 03 a: B  o! v  C  |: q3 ~8 y7 Y
let local 0$ n4 [5 |5 ?; {. W. x% H! a4 a
while [k <[trade-record-one-len] of myself]
9 C# P4 E1 {2 O; q$ F4 ?. _3 M. P[. f/ [/ w7 |! {) K; U) P& G) X% a3 f& W
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) # {: N+ M# e2 t. \% q
set k (k + 1)
$ \% T  \8 d1 \; Z" f, s2 v' S]" e, P' |/ m0 m0 M  L" F
set [local-reputation] of myself (local)
# L3 }( r; E" @. m, ~, nend
( Q7 n" a; ]" g  y: }
1 }9 _0 v6 H/ G9 ?, [: Hto update-neighbor-total
! Y& a  W8 z% \9 b( l  A' r
: R6 Y* w* G# D) ]) _# W) \if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ [4 ^8 E3 B4 g. X
2 S4 r1 U, A% x) A$ ^) G' Z6 Z
* N6 Z* O3 Z9 a4 d9 i( M
end3 J( ^. ~& c/ U/ W5 }  D2 O2 g

! i" {6 d: P: B& y1 |6 vto update-credibility-ijl " c0 k1 y1 |) q. C4 d4 f& Y' ~0 l

* N# e- D! t, C5 M* R2 J;;
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。
, c1 V0 [  L5 ^7 [( C, k& Xlet l 0
5 R1 f7 D" Y/ mwhile[ l < people ]
0 f6 n, o' C& ^& B/ ~8 g6 P) d+ };;
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+ P2 o6 V5 L2 j% U
[5 J& S* T2 p. S% M0 ~/ s
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* T% r$ B, l! K
if (trade-record-one-j-l-len > 3)9 \8 ^% B" a8 f8 M7 g
[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-one0 q9 G/ L) i! u5 T5 Z5 e
let i 35 E8 O2 w& |' t* V+ X' s9 }; v9 W% [
let sum-time 0$ v1 Z3 |( `8 {, f
while[i < trade-record-one-len]# j( N. x, d6 S8 f
[4 v3 \6 n4 b& h. Q1 N
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* c7 ~# Q0 p6 k2 J1 g
set i
, G2 l( c1 _1 N) M  ?( i + 1)
/ E( ^, {: j% x7 [# H& D% T
]
$ E) i( m( _$ A% _. A7 g% `let credibility-i-j-l 0
' b$ m7 `! ?( e3 ?, d+ r, M. h;;i
评价(jjl的评价); |% u4 l, v! G. {$ c0 G
let j 3
8 p" f6 o) j! W, T# hlet k 4
5 k* K/ t( K% y4 ewhile[j < trade-record-one-len]
+ R5 I1 x$ n* R1 b/ m# x+ I( m[! T" D  D( d; l% y7 K- z4 |" Y, Z
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
. E8 h! \9 A2 N% G( Mset 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); l& v% r. F: _+ T; ^
set j9 C3 V3 H! {- T6 ]& @5 J
( j + 1)

: `6 ], Y" K' r' v]6 {% w# [, r6 o9 `( h
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 ))& R' C# e: P: ]7 F' P0 P
( m* W( w- R7 s' g

3 g$ Y9 e7 M" hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), E2 h/ F. r) \
;;
及时更新il的评价质量的评价) r/ O6 B% b  w; o) X, k
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: O& @; X8 r( B$ \1 r! @& h4 K
set l (l + 1)' h* V( k2 ?4 I3 e" B+ N
]8 C# w, G3 _% w- |# g; u* Y4 q
end  {' v) U$ \5 E5 O- M
: P! Z6 {$ R* C7 |% K
to update-credibility-list( B) r, z  Y& s5 t' Q6 y  [, i. U9 ^
let i 0$ d3 G4 L$ t. ~+ y/ H
while[i < people]4 [) K" }0 k" D; Y$ N$ N9 \
[8 i7 n% N5 R) b& t  S  Z
let j 0( Y# t/ }5 b) I  k) q. J3 j$ U
let note 0
: |' O. s9 U. vlet k 0
; b1 o) U7 @$ ^1 {) @# p;;
计作出过评价的邻居节点的数目" A2 D! I( l9 Y; F
while[j < people]
8 B! Z7 c8 n$ j# J+ O[% L2 G! Y8 F, C7 U3 l4 j& @. x
if (item j( [credibility] of turtle (i + 1)) != -1)
. {2 t0 B9 F* D4 k) s4 Z, [: s& P;;
判断是否给本turtle的评价质量做出过评价的节点
: b3 T1 M) C& B2 y$ e; p, D; t2 A8 P$ c[set note (note + item j ([credibility]of turtle (i + 1)))
0 m" a4 A; |, [1 O) g3 d;;*(exp (-(people - 2)))/(people - 2))]
2 d0 `& A- A5 e2 Z# s% Q
set k (k + 1)
0 P6 s3 R3 V; d5 d) L1 f]
9 M7 y5 P, D7 Aset j (j + 1)/ e% s* s; @( M, \1 f
]
, Y5 F7 F8 ^% r, `1 oset note (note *(exp (- (1 / k)))/ k)% N: ^* G. o8 b0 v, _
set credibility-list (replace-item i credibility-list note)$ Y! C# i7 G, U$ x. p
set i (i + 1)4 k* o; L3 q  R  F+ Z7 C$ F
]; L! u) O& k5 \( g' f
end  r- {* Y) H; }5 C
) M& e! V; j( K# P
to update-global-reputation-list* i+ ]8 p+ n, j% q
let j 0
9 r0 C  c' t4 N# K' v1 }. _3 D0 Awhile[j < people]
4 S& g4 K1 \4 t; x, u! J[/ |, S" {# Z( o0 h4 I% r  B
let new 0
. S3 g& H( w/ G# W( J# p;;
暂存新的一个全局声誉2 q% n) [2 S& S% P$ J# @! M
let i 0
; T, M( }/ ~- p+ {' \" f7 ~let sum-money 0
/ Y$ a: M" `% i6 a( elet credibility-money 0
, p9 Z2 M8 V: S9 U- Uwhile [i < people]& E; O/ P; F+ t- ~4 j: R3 ]
[
7 C. h3 t# S. `/ Dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ R' w/ E+ c& s  D5 {/ w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ ^! x' c) R! j/ Dset i (i + 1)
9 T% w2 l# K. n7 y4 o]
# d2 Y- E  c4 _. Llet k 0$ V$ y" e3 J2 G) i. n# s8 N- B
let new1 0* {8 I2 ]: e+ k3 {% U! |" B0 s
while [k < people]
2 O8 z! R) y# a. Q7 j, \[9 R' X4 a9 M5 S% {- o7 \4 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): e  `; `( R# X
set k (k + 1)8 n* u- ?9 A7 [7 s) ]
]
7 V6 Z" @3 v$ u6 w$ o% x2 @set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* s" P. ]2 {8 o: q, @3 oset global-reputation-list (replace-item j global-reputation-list new)
0 C' d& E7 k7 }  J3 o: S3 b" w7 lset j (j + 1)
9 x' Q' d  t! W7 r5 }]! J: X: e# p' `$ w2 G* O6 R+ k- ?( r" Y
end8 ^2 T, [! V3 c& x, c
' T+ X4 O7 M2 }, K; p3 c$ R8 t
9 a3 _$ r/ g4 h1 D" T

3 ?! X0 d# O+ }' N9 ~2 {to get-color
7 V! y/ j* E5 q9 O4 @2 a1 L; G! h8 z2 u5 p# n6 O4 @
set color blue

3 S  U7 K- u2 K  C3 }' \) gend$ a2 Y& q# W. r) r2 p( s5 I8 ?
! h7 i7 N8 m: i0 ~# v
to poll-class
3 T& ~: q2 ]+ Q; Tend
6 `8 y: E+ x6 ~1 z# o  i9 ^/ G: @9 e" H, v2 _1 e
to setup-plot1
  C& ]9 `) [; n1 S1 i0 U3 g; N& m! \
' f) P  _0 N$ B8 N6 ^- o, tset-current-plot "Trends-of-Local-reputation"
2 q1 T, _9 D0 W
) x' c; @6 W+ v+ P4 i
set-plot-x-range 0 xmax
6 K( U" Q. s/ P, p

' q( i8 b* C0 yset-plot-y-range 0.0 ymax
3 {" g% j1 M$ J2 @! n0 H
end
5 n( {0 G; t) x" z4 c/ v
6 t$ t# c* n# Wto setup-plot20 t8 `8 W# G+ t8 X7 C: ?' T
' K" F4 f7 \4 N- h: Z) f
set-current-plot "Trends-of-global-reputation"

, @3 N  c+ G0 w+ Q, s- i3 U5 k; c6 w& e5 N3 f4 N* E! s
set-plot-x-range 0 xmax
" b6 A9 L- \! b0 I9 E
8 r  N! {- q+ h- x9 u
set-plot-y-range 0.0 ymax
$ u8 Z4 q" e& a
end5 ?+ P; `2 J. A1 e( C0 o& V
5 ]8 F2 S  U" ?8 m7 Q
to setup-plot34 `4 {' Z% j+ _% k

5 a1 z# B6 s  ~; j( E: zset-current-plot "Trends-of-credibility"

0 C. C. ?7 C4 w  g8 v
7 D% f1 P% Z- S4 T8 H4 Eset-plot-x-range 0 xmax
" |% I  f5 S6 C% {# @

- C' I1 V5 ^+ [- u' z6 m$ O: J. Gset-plot-y-range 0.0 ymax
7 p" t) {, a" s. ^6 N% \) X  U
end
- V# w* ]1 U- s9 v7 W
% B6 {8 i. w4 L# gto do-plots5 r, k/ Y9 d9 E$ ~7 A% R
set-current-plot "Trends-of-Local-reputation"2 K0 E* |4 ?! d8 Q# ?* a6 \( L( }. [
set-current-plot-pen "Honest service"
8 ^3 V% t& c% oend# u- z- F1 {, u4 q
7 Z; C  x% j4 D' F
[ 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.* D* W/ Q' U( G  r

' o0 d' \, l; C/ N9 y# I6 K. i7 K' y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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