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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: Q3 R" {. b1 I+ P$ K6 Qto do-business
! y* b9 i9 F  d. H, V& f) E/ ], Z rt random 360! I5 g+ l: t. M* e9 S( x
fd 10 B$ N6 L+ \3 ?3 t3 M
ifelse(other turtles-here != nobody)[
6 m8 J0 r6 @# [/ i- p! D7 M   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.% S+ K, @, O/ V; L8 V" d4 n
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  [3 v4 U5 G; k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 ?7 E6 U5 K  c( I2 b1 b) b
   set [trade-record-one-len] of self length [trade-record-one] of self
( w; e* L) \5 L  i9 O7 W5 K   set trade-record-current( list (timer) (random money-upper-limit))0 w2 T$ t7 N' t; H! f9 a
2 `' O% G0 L" A8 E4 X; i. L4 c9 `
问题的提示如下:, k% c) f% m5 c  C2 r4 W, P. P) g& n
) G- ]' T8 r6 Q; B4 k! h
error while turtle 50 running OF in procedure DO-BUSINESS
0 F( v0 v- v; X! a$ Y3 u3 l8 C  called by procedure GO
- y% U7 c% U1 N- \# v( JOF expected input to be a turtle agentset or turtle but got NOBODY instead.
( J. x: B8 y: ^, x# X/ L
(halted running of go); H8 V2 W8 \& I7 _1 {6 N0 z

, g# [0 B4 R4 I6 l( i3 S5 J; Q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~~
! I9 r8 u! t. F! `9 h/ m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1 J2 B2 ~- M4 s2 @& u* {
globals[
8 x" S/ z' a+ v; Y' f1 C! M4 i# uxmax
9 E2 z" s: Q9 D3 Cymax5 c% w8 [1 R& C8 i7 a& r5 @( F" F
global-reputation-list# V  t/ W: B5 I% U
# M2 z( m$ T# l" [& U4 N
;;
每一个turtle的全局声誉都存在此LIST" i+ {9 [, x! ?$ C% _% V. }
credibility-list: a8 O3 c' f0 m: y. a( f* C
;;
每一个turtle的评价可信度
5 K+ x) y1 z- lhonest-service) n' v9 M/ ]1 |: C! |" `" i9 S
unhonest-service
! `: F5 T' J$ |! o# [0 ?% z/ L& B2 A' koscillation  E7 [* n  Y. G; M
rand-dynamic
* E, l. r4 |) S( b]
+ B. }8 ~* l9 q% h
4 j/ f' c4 w$ }2 n9 F7 Cturtles-own[# v' |; N/ }  }$ D/ z9 X
trade-record-all
, O1 B/ u! q5 C/ u9 ~/ V* ]: o;;a list of lists,
trade-record-one组成
6 I3 T7 T, u& v& w" X- I9 Strade-record-one
& v/ R" z8 K8 I2 H( o0 A;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, j* i- x6 Q/ r4 m+ s
0 ]2 c8 D, u; g2 F2 e9 M' P0 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]]
' K/ G7 w3 w6 |8 \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]
' J- H' f! H, T$ A3 p1 \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) w0 s" ^3 s! s8 S3 O
neighbor-total, l( r3 Y: V  W2 U
;;
记录该turtle的邻居节点的数目5 B$ P0 S* R) H) |2 j1 W6 H4 e# o
trade-time
/ m" {0 l6 t) m  t- N, {3 a;;
当前发生交易的turtle的交易时间5 }9 R) U3 U; \- J2 f, a4 A) _
appraise-give
. y; }+ a8 t3 j. H  A1 c;;
当前发生交易时给出的评价
9 h2 J6 N( s% x( ]9 `6 B( Q' o( K. xappraise-receive  @* c: x$ k  V' F3 {6 a
;;
当前发生交易时收到的评价4 u* T( H# K7 i+ h; Y
appraise-time
( g: x' m% p3 u' G: [2 {( b, T; |, x;;
当前发生交易时的评价时间
- q- b" t  U. C1 @; }8 q$ e  Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 e: n2 K, f7 `5 K/ Dtrade-times-total
& s6 n; a6 ^% _) S' w: d;;
与当前turtle的交易总次数
# O* K9 w; w4 ]8 k, ftrade-money-total
' p- L) ?8 j% h; C- m- h! w;;
与当前turtle的交易总金额9 R$ }0 H" _2 k/ I, U; C
local-reputation+ L! \/ Y$ @# d6 B1 N
global-reputation$ V4 K- |4 k( C  s' _8 J7 `
credibility8 z* X4 W2 e  `' ]
;;
评价可信度,每次交易后都需要更新. O8 k# m1 L1 B  e: r
credibility-all
* m2 o/ O2 q4 a1 K9 y' Y% B  L;;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, L8 y( f7 v1 ]
4 U% y+ d& C/ F
;;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) f* m4 m# I- z  f# h# Q1 m7 A& |
credibility-one
* D% Q4 y/ G7 f+ N2 z& `& p;;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
* k$ E; C& j0 R0 O# y9 Bglobal-proportion
1 l! B" p2 R  w. \, U. a4 `5 o* Jcustomer
4 a6 u! k) f  R/ G: h- Tcustomer-no, }1 K" x, k* G: h# F: @% b
trust-ok0 t6 w( o+ Y3 E5 N& l
trade-record-one-len;;trade-record-one的长度, K, z) d9 n5 G5 e" G0 ]/ j
]
, q6 J, r" t9 s2 @; Z* d" A0 k. z2 l8 G/ U8 D$ L
;;setup procedure
3 s: T" U0 _7 n! f# L8 L( }% j# k6 u8 n7 z5 a  s
to setup" F6 ^& N' \" m

. i7 q$ q+ V$ k+ I' Kca
4 _# Z, ]% f/ `1 X. J0 ]& R5 k& A
$ n" L! \, P! l( z
initialize-settings
3 {9 V% W8 u" ]9 B9 }4 y; i( P6 W
: p! d5 e* Y. X( {( i+ P
crt people [setup-turtles]
! O* q" Y+ @, P2 _/ a  s) H
3 ~# v0 r8 }) d
reset-timer
& K, `8 c: R- }0 L. U2 j+ x
/ [, R0 V! ^* O. k5 [
poll-class
: ]9 k$ ~% a) |; R; C/ P
7 k& K0 A; Q3 t4 n2 m5 S/ h- d
setup-plots
9 {( @% n- U& a- m/ t7 l: V

; d8 y8 F$ Q0 n3 b. i: M7 N/ ado-plots

" s2 F. _9 H) E# H+ Z" Uend
6 P( h) y3 ?! C- v0 X. A/ b) D* I$ `
to initialize-settings
. g' y  k) k* q$ W
$ d/ ?, y5 e/ e, Aset global-reputation-list []
( |& Z9 {  T% M" z
" ]8 Z/ i# u2 ~. _9 ?
set credibility-list n-values people [0.5]
, V- P: P% g( g$ G

+ l; q: Z+ {- P$ t: vset honest-service 0

# Q, z, }& {1 w- D4 ]" X" d, e7 q6 m, t6 b8 d0 s1 N5 E0 z+ j
set unhonest-service 0
1 n3 b. d+ _4 D1 V' N; I

* |: y3 I7 [) i% nset oscillation 0
* h9 p7 a$ n% i2 Q

- m3 e, I1 D  e5 Y" ?  T$ aset rand-dynamic 0
* o+ a7 M  y0 X* ]0 `; N+ T; ^
end
0 B# j- f' \7 ^& w7 Y. M
( z( o* K% H) n7 j0 k- T" J& [to setup-turtles
4 {6 v& F# i/ Q: [! p; zset shape "person"
/ M! n; R8 Z9 e! b, |' hsetxy random-xcor random-ycor& k" Q7 [, Y/ F) y+ n6 G3 g
set trade-record-one []- k5 M4 E2 M* I# d( _2 m" P

4 H7 |- Q8 F0 j* m8 q: d3 Jset trade-record-all n-values people [(list (? + 1) 0 0)] ; l6 S# D$ }& j# L3 z  u; l/ l* u

& K( j- ?8 T- `! F  s( V7 b+ }set trade-record-current []: R6 a- O( R7 `: Y
set credibility-receive []
1 c* U# c  R! I! {" C6 Z0 yset local-reputation 0.5
0 B+ B/ f4 G5 Fset neighbor-total 0
: b! ]+ i6 L$ x) Uset trade-times-total 0# `& \6 U; Q8 _) x
set trade-money-total 0
, a# v: @' U' u9 M$ e, O7 lset customer nobody7 f2 m$ F* A% B/ V
set credibility-all n-values people [creat-credibility]6 J% S& l* d5 P" N
set credibility n-values people [-1]
. Y2 n& _; v3 n# r/ w4 Oget-color5 e& C. A8 f# O, p! z! F8 ~

) {1 S* y; P0 ~: N9 o( Vend
2 T6 w5 h9 j) f: `) T1 j. P
4 |' q( u" P' @9 D  w8 eto-report creat-credibility
* X* a" S$ U; Q* z( i/ d4 ?2 lreport n-values people [0.5]
) Z5 W) _- O- Q9 M- Pend
9 p* I2 @! m) v3 b) T6 V. V  F5 h9 _- b, q( s
to setup-plots
% q4 f) A& {% ?2 E$ Q  w8 F  E" D" a- N  k$ p  I
set xmax 30

" R1 G+ M2 D+ w2 f8 J7 P3 ]) K; C# z. ~$ V) [% U2 M( s
set ymax 1.0
  N% N) V/ H$ k8 G: p

( \% o5 Y. K9 u6 ?! d& C3 c1 kclear-all-plots
7 n& P9 u7 q# {7 t& m* Y' ^

( C, E8 J6 W: dsetup-plot1

5 R1 M7 \1 X: V3 F' b2 s1 W) S3 k" F$ U8 h) c1 R7 l
setup-plot2

+ V7 N6 q! U/ Z1 h" f0 e7 q) S0 t. X2 p8 Z6 k; G8 N2 i  C
setup-plot3
- _2 w& L1 O3 r# y
end
; g/ h( c  I5 v; |
( [! \" C# P2 D) C;;run time procedures
9 n) i+ \  H) w( z/ N: a+ F
: i( X0 n+ y9 s; m- z$ ?1 G& o+ pto go
  _; @) l# s. u7 N, l  U1 p, ~. M7 W% G! O7 g1 F3 L8 z" i
ask turtles [do-business]

8 g! {# P, b  Y  o- dend
. c% C5 ?  _2 }9 g0 e6 S) j: J/ m& U: |4 i  H4 M9 ^0 F
to do-business
1 U6 P( e$ F$ f2 \
& g7 m+ X% |" W
4 i* h: s: b  j+ ]1 r
rt random 360

/ C2 O) ?9 f5 l
" f: r' b* L: T6 Ufd 1

" s1 K7 m- H* w+ y- ~* h
  q- N) M/ _8 |8 m6 K8 {) Gifelse(other turtles-here != nobody)[
( B* R0 N- V% v0 N4 U
1 v1 y% R5 X' a, h, G$ ~+ F) p3 f
set customer one-of other turtles-here

, V0 ~8 q  G1 C2 C: m  y+ O+ x4 z$ r1 G5 Z( U( S
;; set [customer] of customer myself
# ^$ V4 ?% ^+ T5 |1 \% b

: a! o; F/ X3 j% u1 |$ s0 T5 Bset [trade-record-one] of self item (([who] of customer) - 1)% c/ m) G# w& S# ?9 {+ p9 P
[trade-record-all]of self2 t4 G2 S" X! k1 f, X  F& ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* @$ p, a0 V& z
7 z  q1 e  |8 B- k! u* j* _$ _4 cset [trade-record-one] of customer item (([who] of self) - 1)6 f) ?" @4 Q& @: |: {' E. I
[trade-record-all]of customer
) R( y+ g6 m# I7 T9 m; K5 U6 d# U
4 ]! @% W# b% E' U# S0 ?* V
set [trade-record-one-len] of self length [trade-record-one] of self

6 m, l2 r5 y* [% B: }0 s" D. z$ Q2 F- e* h; N
set trade-record-current( list (timer) (random money-upper-limit))
) W% g" a( Y2 J9 D
+ R6 n1 s/ }5 H# S
ask self [do-trust]- H- S7 _$ [9 b( W' P
;;
先求ij的信任度
) V6 G! T( Y" ~- ~- v' z2 C  `- J0 z6 r! L4 d9 F& p6 V
if ([trust-ok] of self)/ O: {( d1 m4 F
;;
根据ij的信任度来决定是否与j进行交易[
1 u4 G# K- E* w9 N  V2 M/ _* ]ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 H2 b3 B8 c, K5 E( J
7 N  `4 m2 I5 S$ W[

! E& g$ d9 Y/ `) i; A3 T
6 x1 A  q9 N4 u' M* tdo-trade
! M  `) \( D/ A3 V% a2 w* ?+ d

1 T8 j) n' @0 Z9 e8 j  }update-credibility-ijl
" h9 l$ ^6 J9 v0 g' x% p, ~

3 Y: X2 q2 ]) f" d/ w5 qupdate-credibility-list
6 _# Q, N! S) g7 z: f- P
! R. P1 `8 q5 ^4 k+ [& k/ S
3 T4 q& K1 U. |  P3 _4 D3 M  ~
update-global-reputation-list

2 p* D. O% G; n0 S! V
* g4 g. \  b/ U2 X0 Rpoll-class

6 t; s9 l9 c3 b2 b
5 h) u" U- |; o9 p( s4 |- t. [9 |get-color
! j$ Y# W" u# S5 K' _5 d% ~8 k
: m% e. I1 f4 q! F- W+ Y
]]
7 m8 K& o+ U- \- j# W. a, |8 m) L# \! p
;;
如果所得的信任度满足条件,则进行交易# Q0 t0 Y8 c$ D1 w3 B/ w
- t9 w* V8 u7 C. H
[
7 ?9 S; k6 w! ^2 l7 t8 r. [
6 f# }- f! A* z" j8 u5 k
rt random 360
# K/ G! v2 Y" [0 ^3 V

9 Q& s% u7 r1 X# V; |! y) d, A) xfd 1

  |# w9 s4 A1 m
8 r- ?1 U7 {5 M8 ?( z1 X# @]

" Q3 F& _# [: P" N) F- ]+ ~' [
& T2 s% |( i9 B7 @) cend
5 J+ ]& S9 \0 _1 y0 g+ r8 l

/ D7 ]% t& }3 s& yto do-trust
0 f4 h3 M# c# d) n& a7 jset trust-ok False) {$ S# S" V8 T2 i3 r" U

$ C! x1 n2 I) R( M8 }
3 Z+ ^# o7 }* ?" K8 ~4 x
let max-trade-times 0
! @8 ^1 Y+ l1 a1 A5 M0 mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& ~0 o3 D- v; a: ]3 U  k* rlet max-trade-money 0
9 v! k1 }1 {4 U9 C& dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" y6 i! T- ~' Q2 B' n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! f4 U( _7 \- z. g  b/ {1 O) k# J& s% F; m& S9 F
; ]$ {" O3 T9 R- }6 _: Z: M3 [
get-global-proportion8 n  |- t! R% Q/ [- t
let trust-value
+ s( i! @2 ~  Jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

. j0 t. P- Z2 z7 x5 xif(trust-value > trade-trust-value)
6 w9 x1 z, X' x1 m[set trust-ok true]
4 }2 J2 G+ w2 v* Q* q) C9 F% Vend
3 c4 j: P* d- @9 W
% [0 k- }. R0 ]5 O8 G( ato get-global-proportion$ y6 C. w3 @: a! z2 R# ?( O
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), T8 J; s% U3 B) h( J/ A! U. H
[set global-proportion 0]
; p; X8 l5 T* H$ m0 C( y! Q0 \- p; J[let i 0, M; z& H  J4 y( ?" N
let sum-money 00 \% c( i% j9 i3 m9 J
while[ i < people]
: K0 w- V5 p0 W4 p' H9 Q# J[
0 V) M# O7 b! t8 e4 Q( \if( length (item i' y' C. D' |, V( t- q" b
[trade-record-all] of customer) > 3 )
7 J! b1 T, ~1 J4 w& g  ]
[
% q3 q) x1 V- V3 c* J1 Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself)); G8 s5 q/ A& `. g4 F; Y
]( u% F, I* U/ w' ^% ]
]
0 s2 l6 Z/ U; i4 ?9 {let j 0
; U4 t/ L$ \( k( t: q# Blet note 0
  I" I3 y# D1 G9 ?+ Xwhile[ j < people]
2 t. B# G1 ~* v4 H2 Y$ k* F: u[
) x0 P1 b5 @$ I! P7 Jif( length (item i
( k' l! J7 l1 |  N[trade-record-all] of customer) > 3 )
) ^  A% q" y2 X( [4 l6 n
[
, l+ M% U% t) Q7 Z8 f6 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) z* D' }' |7 ?. ?
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' j* R( T% V& g+ x
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 K4 y9 c/ T( R  b$ _$ h! S3 P
]
0 H  ?  P8 i1 D]
' O% c1 k% p, N2 d) d' s- w/ L3 T) `) {set global-proportion note$ E) o& `& V4 ?1 S+ D& U
]2 O$ [  h$ E8 v2 m
end
( Y" G! o3 u3 ^' m3 n& J3 G9 ^3 |
% F# M7 U, x# xto do-trade
, C  b* j% U, B2 T;;
这个过程实际上是给双方作出评价的过程
/ y3 i. o) k- u4 p1 M  vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 Z9 Z2 ~1 ^% I$ G! e' D: |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ I& v0 \6 v* a* P+ @set trade-record-current lput(timer) trade-record-current
5 r* {7 w% s3 B0 f  Z;;
评价时间% V& [6 [8 i* D8 j: a, S
ask myself [
' e9 Q! a6 X% {& e9 I1 j! Yupdate-local-reputation
; C. `4 u% d6 Y- o$ Pset trade-record-current lput([local-reputation] of myself) trade-record-current
; Q4 r7 N3 r# }& h& |3 y* x# ?]2 n; \7 [6 o2 [, P) g  Y: l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% h2 J! V) _& A! w9 B# e4 w4 e
;;
将此次交易的记录加入到trade-record-one  _7 m  ]! H0 h8 y' y% @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 {& e% y& `& p7 o/ H' [
let note (item 2 trade-record-current )
# ]3 ^9 L7 n0 b2 ?& p* [2 \% l! Mset trade-record-current3 i! l$ Z, H" ]1 r4 h, X. U* b
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ n7 W4 q7 g6 o7 I& W1 ^0 Mset trade-record-current
$ ^4 S& f1 i+ b" l& Q/ D# @+ T! G(replace-item 3 trade-record-current note)4 n4 u: H% W8 F: b* y6 e' S1 b. Q

6 _4 P' Z4 B( \. K" S
/ [* A2 c% v! ?. H  n  ^+ x7 A
ask customer [
1 P' @0 ~& ?$ qupdate-local-reputation. I+ i/ y% @1 J' l% d* Y1 y2 C$ \2 z
set trade-record-current
" J# v7 D$ U8 U6 G% e(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- s) s! [: y7 C+ q) @6 Z]
( k% G+ c8 l9 X; |. E/ P
# X7 h2 \  W8 S! N

- P" X2 y) L% r$ v/ K- [2 A7 lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, V3 z1 d, ^: i: ]% z5 B
: N( S2 Z7 _- Z1 ]
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ `* \" ~7 K3 n. k1 U% x6 R
;;
将此次交易的记录加入到customertrade-record-all
9 b- m9 r" l  a+ i: R0 V# eend/ y1 D& H0 r9 q8 k
" H4 @5 z; O$ f* _
to update-local-reputation
5 \+ o  Z5 h2 P5 Uset [trade-record-one-len] of myself length [trade-record-one] of myself! i: j% b/ d, I9 e3 R# s/ ^
$ c  L% ]- c/ y# K( Y6 Y* t
& I* [" n& W* n( p, g# A. t
;;if [trade-record-one-len] of myself > 3

* `/ V2 e4 b, e% b! m4 e& Y7 r5 }update-neighbor-total
7 Z0 R/ l# d5 n  X3 [( _;;
更新邻居节点的数目,在此进行
4 d7 J0 H8 v& jlet i 3
" o1 |  b( N' t; s) [; u# Llet sum-time 0
; x5 X7 Q3 G0 y5 [5 Iwhile[i < [trade-record-one-len] of myself]% S8 r4 B0 g+ g9 b  ]
[
) f. [" S: C0 [2 Zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# F3 M9 \+ K) d' X6 m  ]
set i
* R, b# q' M# v: R5 f9 U( i + 1)

0 l& E- C: x" m, Y  o9 O]) B+ l2 Y1 @7 C' J/ x+ i
let j 3# k' }- ^9 t4 u2 |2 q0 F8 S: E
let sum-money 0* B0 F% y0 e5 k4 M( B( ^  d
while[j < [trade-record-one-len] of myself]
9 b* O; L+ F# H; k" l5 t( L) o+ h[% u& A2 e  J9 R( J" j1 m
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)
0 a: _" H5 {$ j" A( ~set j, R4 {4 A4 J1 P2 v, z
( j + 1)

) \/ d, b( U5 g: x+ B4 P], t6 \* S( X- ?! `) P1 D9 c3 q+ b
let k 3
, K9 p- |+ r9 Z2 k% F7 _let power 0
  ]- ~8 R( ?7 o; }8 C; alet local 0
; u$ k' R' b0 mwhile [k <[trade-record-one-len] of myself]' w1 K5 o" L0 w3 D
[
, g$ R" x& R3 N; y# E5 F9 xset 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)
8 d  Z$ E2 |3 i8 K( e- o$ pset k (k + 1)
; p4 J& r  {" ?# J' X' n7 y]
2 B( A; q4 D. K+ S3 S$ ?* o, Mset [local-reputation] of myself (local): N7 p7 C% \$ N0 g/ D' \
end
8 W5 p: {" I4 [3 s+ i0 U% d3 B4 U( G0 ?
to update-neighbor-total
/ Z3 d* Q0 Z+ \+ U4 M6 D
/ C% G6 X* h+ }" Q8 M# p5 f7 ]if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; K5 h  C1 w* t0 y! i
1 l; S' e* y% q0 ^1 j
' h; U' O# V$ J+ {% U; [3 p
end
, d$ t( h" T8 Y' }& q' G
& H% L$ g4 S# X) y) Y: rto update-credibility-ijl
5 A8 s8 L8 u( }7 A) f
# Z% A8 c. f$ V6 P* P;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
1 S% E( F5 h8 L3 \. U  e5 X( E4 Clet l 0
* ~( M% m! ]! o/ Q! P5 ewhile[ l < people ]
+ A* N; p5 {8 K0 D7 z; E;;
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# k1 L7 v3 h2 L1 \  j
[& `7 Z. n& m- A
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 ?% B0 g3 F" k- J1 O' S
if (trade-record-one-j-l-len > 3)% ~  |8 B7 `& X# y5 T& |( a# W
[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. X* H$ p4 A9 {% P( N
let i 3
! [. g  |( i# Z* C, ilet sum-time 0
, c: k2 P, b) K) u# dwhile[i < trade-record-one-len]! ~5 x0 b8 R2 x1 g9 a$ h
[. l! P7 b, X8 Q% F
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 y; V. m4 x1 u" ~
set i
: F" c: v) ~5 z4 h: X+ V0 ]6 ?: c( i + 1)
4 a9 T9 ]" g7 P9 t$ A( S7 m; a
]
: a8 P! W# `6 g7 J2 i  c2 r' z3 `let credibility-i-j-l 0
& {- {% N2 p' O) a, T;;i
评价(jjl的评价)
, P( C: S) h( e( Elet j 36 r6 d9 j) p" C" k
let k 4
0 g/ R$ t1 ^5 c4 s7 v: jwhile[j < trade-record-one-len]( o* O7 R3 H8 G5 R" K7 T  J( l6 k
[6 t5 l0 S( ^% c6 l
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
! M; f+ n  v0 Y! Jset 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)  @  F" m7 v3 B" r6 R
set j% S6 P  Y  G, L3 s8 C* m9 v
( j + 1)

9 C( Z  l, P4 X2 k]
4 ^( U  F3 B0 A: Bset [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 ))
5 b: c, V: n. T% U) D( A8 U5 T, _0 l. M! a( z" g
- H' H6 P7 ~( }: v5 H' [
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 A2 T. s2 w- v+ J" x/ F) d6 ]
;;
及时更新il的评价质量的评价
2 F# y8 `! c5 b! bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! m( a$ l' n0 V" O: |& }set l (l + 1)& D" ?  c  U2 z" ^2 `+ M) M3 h+ C
]) F* ~* s$ }8 f% s! `, r! v& P* c' j
end: ^% g# Z- [( p2 y: F9 j' h

( z' z, O" P! A% b" Mto update-credibility-list
4 U6 C; ?& j# K% P0 |1 {; Zlet i 0) _: \. N3 n) K4 e2 X
while[i < people]: p  U$ L$ u$ I. P
[: G$ m/ m3 ~4 I: k: E( m
let j 05 ^0 a) z5 U; I) T8 Z
let note 00 l9 i4 c+ V3 q$ M( s; L1 V
let k 0
/ ^1 J* w( C/ T8 R;;
计作出过评价的邻居节点的数目4 K8 @/ p9 t! S" k* n- I, S' c' @( K
while[j < people]/ v( d; ^7 u7 w) t" m' k" O# w
[
. B3 `# ]. K# Mif (item j( [credibility] of turtle (i + 1)) != -1)6 d1 I6 J. ?  J1 X; ~* {
;;
判断是否给本turtle的评价质量做出过评价的节点
+ d6 u: G3 |% W7 e  v1 H[set note (note + item j ([credibility]of turtle (i + 1)))( v) Q! @# P$ B+ P5 D6 V2 I$ a0 a7 P" [
;;*(exp (-(people - 2)))/(people - 2))]
2 m* p9 e+ L( W' U+ G! j
set k (k + 1)
0 S7 U3 }0 r3 S1 X5 }% z]
# F- `1 ^. L: d8 d# Wset j (j + 1)1 r# x2 V5 |; l( @6 `; M* [
]7 j: P8 D/ ^9 N( K, k2 J
set note (note *(exp (- (1 / k)))/ k)
- h2 m. q8 l6 jset credibility-list (replace-item i credibility-list note)+ |( s, Q  p! f$ i! [- W
set i (i + 1)
! _8 z& m& X2 g5 l! V]
) d8 Z7 e9 J7 z# K0 Qend9 O4 H; ^8 O- N' n

+ }8 F& s% I8 I+ ?! f; {to update-global-reputation-list8 i3 _- A" z$ B: M! n/ \
let j 0+ \" d% n1 `( |' `/ z' |7 d
while[j < people]+ s* |6 i2 E& y; L- g; r+ N% ~
[1 A+ f) A8 a+ ]: {* D# t' K! j* B
let new 0
: v7 p# g0 c7 y  Y! d;;
暂存新的一个全局声誉
0 t5 B4 g6 i, v1 B4 slet i 0
* I. C2 p% L- L( h1 K5 Plet sum-money 0
5 B0 K) @1 I9 C/ j# b% Rlet credibility-money 0
8 T- E' n7 t& H) _6 qwhile [i < people]  D& A# p: J9 T) r0 n4 R
[7 N% X+ a9 ^4 Y; E6 _  X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  f3 X) e# ~0 V* h: s" D7 \7 H0 n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# n& n8 S! x2 r; S1 \
set i (i + 1)% ]: B9 k8 B; ~1 i
]
* q  I5 Y4 F+ V; z! }3 Glet k 0
) G/ O% ?# D& {0 klet new1 0& n. W/ m- t' o3 ^* B9 h+ G; b
while [k < people]
% m) M6 q8 J1 {2 b[
8 p2 _2 a" N& r$ I+ e4 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)1 Z4 N, F6 ~! t- R" b. M
set k (k + 1)( B4 S" _& u# u, v5 `0 x
]+ T. J3 G6 U" e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 w, j0 w: L1 ~% y- x/ O, [0 j7 s4 |, Cset global-reputation-list (replace-item j global-reputation-list new)
# ?& ]& g: I* z$ ^# N+ vset j (j + 1)- g- v# K, T& t
]
0 f3 \1 [" T  Xend
) G  a1 j9 V! e
8 e6 v8 Q, Z' [7 N" b3 F. C
( `2 z+ z5 x' i$ u+ J3 [0 {. C. m# z& _$ L# H$ {/ u' r
to get-color: i$ m5 W# Y( v6 s" [

4 t0 B! W* l/ f6 qset color blue

. @; W& [! J( p% N! `9 Xend
1 Y' `' I1 F4 R! A1 n. A; F, o( E3 z+ |0 n0 D$ o
to poll-class
% C5 `! x( ~6 _* \: Fend
) b# k6 \% I1 m" j0 R
  d3 h- w4 }, e6 bto setup-plot14 F) T% s+ \! {0 U. t4 `2 u
/ n6 ?0 w! K2 @' S: q0 }
set-current-plot "Trends-of-Local-reputation"

; G" G* r. Q$ A! A& F# `
( M, e2 V( f" d! p& T. A6 wset-plot-x-range 0 xmax
$ b, C0 H/ |. x: c( }

: e$ c! b, |" n" c- \$ E$ oset-plot-y-range 0.0 ymax

8 a" S8 f. w; R* `) O4 r% jend
" k' o( d$ _9 r: Q- Q' ~  d- A
+ o& A$ N! y$ Rto setup-plot2
0 t4 A  b/ v2 i5 k+ c. w7 \+ p
0 u/ R% H( @: b) _% P3 G" d2 Mset-current-plot "Trends-of-global-reputation"

0 j7 z" a* |5 Z4 b  _8 \- ~: w9 m5 R9 y
set-plot-x-range 0 xmax

1 A* T0 _4 Y! V. J
6 U4 m) j3 l) y7 {3 |set-plot-y-range 0.0 ymax
7 o+ p! a8 N) g
end
( P) d  n- k& |' k% S* C  M6 m, Y* w5 [8 s9 M
to setup-plot3
* i8 E" ~5 ?5 f" e6 F; ~6 V$ A; [7 v: l  k0 f
set-current-plot "Trends-of-credibility"

5 Z; m2 u8 g" @
4 A, k% }' N3 H  Q! S$ Oset-plot-x-range 0 xmax

- Y. X- b9 W! H
' H, T- K+ c; u1 {3 u5 e; xset-plot-y-range 0.0 ymax
) S$ ?% }  @# T2 R1 U. H# x. a
end
. p% Y: R3 O% U7 L$ A
- Q# W4 n7 f- Xto do-plots* o' ]" Z0 z5 o* B# j; s
set-current-plot "Trends-of-Local-reputation"
8 T4 H- L: b8 \' p) nset-current-plot-pen "Honest service"
. e* @( Z' R( z+ q. @end
: n+ L1 u  g, D) k, U1 F7 ]5 i$ Y* M
[ 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.; A( C0 ~  z0 n* W
4 b  S# l& G4 }
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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