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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:
& H3 l/ f) N6 R7 P6 Y- \' |to do-business
% O3 F. T! |  t6 u2 Z0 A rt random 360+ S$ z# N  m+ W
fd 1
5 [6 P3 g: M9 X5 f/ n6 V$ t) z: E ifelse(other turtles-here != nobody)[
/ f3 L0 M1 W, ]4 i+ 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.0 Z& E2 x3 g, I% K0 R: V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- @4 A) R& v9 P! ~$ I3 v) E9 B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 a9 n7 f' M4 H. }% a+ l) V" f   set [trade-record-one-len] of self length [trade-record-one] of self
3 Q/ p& k1 Y. _8 z9 S   set trade-record-current( list (timer) (random money-upper-limit))
  F" m0 c, v) v# i' r/ T5 @! q; r6 z
问题的提示如下:
, H$ Q. `$ ?' s: z, [& R0 q
$ f8 i! _: V8 t6 Kerror while turtle 50 running OF in procedure DO-BUSINESS5 y* d9 }$ ~% z  ]
  called by procedure GO  b6 T6 M; M  _( @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! {' Z. V) W) e9 x6 i
(halted running of go)
) H: b% [3 k2 [' a" i5 p. S) \7 j
9 A) l; o: O6 H1 o; c" {+ i; L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~~4 Z1 q# d8 n) ?; y; `6 a
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; \$ {% d2 h  R' B
globals[6 y* D5 r' B, U* ~
xmax
1 m1 [. ?+ h1 o; r& e8 Y: x% j/ jymax3 n0 e: h; o. k8 v; F* u# O
global-reputation-list  [: y# L4 I# y

# I1 V' g% g8 ?, U: |, F3 G8 e9 f;;
每一个turtle的全局声誉都存在此LIST2 O& y! W. R2 [2 ?: {1 I$ p" V
credibility-list
$ @; N% S: q6 p  k. };;
每一个turtle的评价可信度
' f# Q" k9 ?' p4 _! l8 r8 mhonest-service7 H% U" k% H5 g: g6 h* Y; k$ ~4 o
unhonest-service
7 V+ X6 D6 D- {1 g7 Yoscillation( S2 O, d8 `- J
rand-dynamic. C. }2 b' E1 e) x, I! y; m5 A2 q
]; ]4 i& \1 O+ x! ?* L
1 e0 ^. {: L6 B2 M5 F
turtles-own[! Y% b4 D) R- ~0 Y( c
trade-record-all
/ s0 l4 V8 W5 `; v6 y;;a list of lists,
trade-record-one组成* u- C0 x2 j( m- W+ S
trade-record-one
, I# O8 w. _& z0 n- C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: c/ s) g7 R- q  K8 E  e2 }
- a3 f; s# ^1 M; H) @;;[
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]]* f0 y  J, R! j) i
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
$ i$ v4 M3 z) rcredibility-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list9 W; T/ S! V7 G& T, j
neighbor-total2 H+ F' z* I5 ~) i. D/ J
;;
记录该turtle的邻居节点的数目
/ S$ V" _! a+ F% h* Rtrade-time
- Q3 u" W1 u* W5 c- R2 `$ Q;;
当前发生交易的turtle的交易时间1 |4 o1 V8 {/ H! C
appraise-give
: F6 j# C5 _: X: d; s8 }& H: v;;
当前发生交易时给出的评价
/ E* }1 o2 `2 n% G' kappraise-receive2 T1 j* I0 j; S/ L+ |: \# l% P
;;
当前发生交易时收到的评价
1 [4 M: Q* n( Z# iappraise-time& V& t# B6 B' a
;;
当前发生交易时的评价时间7 f5 ~3 C  x$ R+ m& r0 T* K
local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ @1 l/ \0 E& W& N, v
trade-times-total+ v( r) c- m/ U7 {* m
;;
与当前turtle的交易总次数2 c: Z0 i- s8 P# b) \2 `! I+ Y
trade-money-total1 Y+ o6 ^& h6 A- y1 I+ `& K, x
;;
与当前turtle的交易总金额
9 }7 r! r. m  m# J; P& jlocal-reputation
3 R8 D, j' ?. t, W7 a" W. Bglobal-reputation9 Y0 Y, k0 U: h6 J8 B: I
credibility
* b. R0 {8 ^) M, F# B/ q3 f: x;;
评价可信度,每次交易后都需要更新4 ]+ x/ S7 w  B" Z2 W
credibility-all
# S: \) k, ]! z1 z& N;;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8 S) x  k7 c2 e7 r
& A( t9 ^. L- t. H1 _: A0 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0.5
" V# X' j+ u2 O2 ^4 X# {credibility-one1 c+ d$ h3 r- L) h
;;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people7 A/ e* @: B2 R  R: c
global-proportion
) B+ D6 |9 X2 p0 k) `* Kcustomer
- c/ k- A' c0 m' |customer-no* J" N2 p1 n( O  i2 |* ]- P
trust-ok
0 Z5 k) w! \$ C' H( ~trade-record-one-len;;trade-record-one的长度
( a" @! b) L, V6 n]
6 v- s2 T+ O  K' H2 U/ @" U/ O; M. b# M  e* Z- I
;;setup procedure
; M, f$ D9 L# E+ }" ~+ y% C' H9 H8 z) u, N$ Z. H1 Q- _
to setup# m3 a; u8 s1 m. J* F
! b# T$ P* d# K; ?0 y
ca

+ K0 z# m0 |7 z3 i$ v0 K
4 `8 I& Q, r! v2 |  F1 z4 |1 Vinitialize-settings

) ^- ]9 d( a0 b6 N3 A! ]# O' J" c# Y, \2 ]  g( q5 P4 m
crt people [setup-turtles]

/ l6 `$ ^; z+ R$ [3 a6 v; ^: w/ R1 C* Y4 H8 L6 ?- a
reset-timer

5 m5 `6 F% q; ~1 G# \, Y
$ ^8 ~4 O& ~% s" _6 vpoll-class
; A! t" F3 E/ F/ ~/ f$ N
& \4 i# C/ q! Y! i: t0 O
setup-plots

7 G  _" Y* g+ O" X
/ I" r  q& Q5 \" B) bdo-plots
0 x3 p' C3 o2 F5 f: g* ?- A
end
9 A4 o* t' E, O+ i
& w& `  m% G2 g2 Fto initialize-settings1 B( r4 J7 S: [. T

. T5 b3 u/ v1 t1 x- Z& I3 r8 }set global-reputation-list []
& X: w/ A8 g6 n& I' V5 C# @
2 ]( r; I. h! y9 a& k
set credibility-list n-values people [0.5]
9 j9 t7 y% N4 b- e8 T' ]& R2 t
' ?* |2 W) G: u$ ]! W! F: a# o
set honest-service 0
( v# x( D9 k2 o) E- L4 K! `% b
; i" {4 h6 i# s! B
set unhonest-service 0

# K/ g4 L4 J0 I8 G' a: W
% _. Q  L! V+ Z" ]set oscillation 0

) Y1 u  m& i( M# f; D$ C+ e
$ r; J1 z8 r% U# B7 b: Fset rand-dynamic 0
& D0 d: m1 P6 S' z5 Z
end
. c* o) M  G8 W% g7 ?  Q0 R2 M6 G9 X; X
to setup-turtles 8 M! Q: l4 Z0 Z- D& k$ J
set shape "person". ?9 d  p/ }. E/ |* F$ ^
setxy random-xcor random-ycor# _3 Q+ T# k, H$ e0 I5 [+ ?: V* R
set trade-record-one []7 `* a4 A' o) ^8 K" S( E

0 T7 A: R) N' T1 [0 r' a4 r/ }set trade-record-all n-values people [(list (? + 1) 0 0)]
  G6 ]' L2 ]2 ]# A

0 W' A, p2 _& h- M7 [+ @* p' Dset trade-record-current []
; B; v- Q% |; o* S3 y1 dset credibility-receive []
* W9 I9 z& E& Y& Cset local-reputation 0.5
7 p1 ?6 ?6 r$ ~) p1 j: x$ aset neighbor-total 01 D& h4 {+ C+ q( u" I( N0 O! c
set trade-times-total 0/ [. n% T  v  E( u% k0 M  X
set trade-money-total 07 M" T! e' W" f! R. _
set customer nobody7 j+ ^1 g* M! ]  Y& M7 `
set credibility-all n-values people [creat-credibility]
2 q6 F3 ?1 Z( Hset credibility n-values people [-1]/ \- O! y; ?" U0 n$ C5 S
get-color' W# w% N7 D3 ]1 M! G

  b: `/ P* B% y% V2 b, I5 [end* |$ M) q, o1 K' _2 k9 B0 v% A
  t& t8 m$ l" V
to-report creat-credibility/ A) Q6 {. d2 s2 a6 m; Y5 z# U
report n-values people [0.5]
& b' C: I7 l/ H* n7 B4 G9 T4 _end
' C6 f* v6 z% a- U4 X6 [0 u. }7 j9 C( K' M9 ]
to setup-plots
' B. b$ F' e& j, r4 a: ?  S2 I3 G* ]3 Z
set xmax 30
: z0 D  a6 z2 t/ E
& ?" Q& I& [. ]/ P3 o
set ymax 1.0
1 M0 |7 F$ A* @8 Z3 ^0 P

1 z7 @* p1 k) Lclear-all-plots
" A4 l1 ]/ G4 I  \$ {* M
7 J" W2 P& y% [6 |
setup-plot1

8 s/ O0 H. E! U% B5 U
/ Q1 b" D# X6 T9 o8 ysetup-plot2
+ B: ^; s" c6 J" \! m- y; K
- z5 _* j! L. e
setup-plot3
* M9 }: l, G3 b( x
end
7 e. S' U, g7 Y4 d) P' O* o8 n7 d3 B1 ]6 _  R9 z
;;run time procedures- u9 F4 J: z  \; F

/ v) I6 g8 L0 V, G  n' D' ?* ^to go
, R; E6 U/ T( J( y" R7 p7 B; K  f9 [$ V4 p3 m5 X
ask turtles [do-business]

/ d* j+ H( r2 q/ rend. V8 [$ Y3 f7 K& U% ~. f) L- N& p. I

3 Q) ]: V. i* T& w+ x' Nto do-business ; b0 m2 v' r. r# ^) |; x2 ~2 [& G
6 R# J1 g: |) I/ Y! p: ]# q& @: D
, G* |- V1 D' u6 G, B
rt random 360

  i5 E1 `# ^1 }. S$ E4 C1 e, a' N9 ^8 O- F# e( R
fd 1
& X* c; x0 A, |9 M- q. X

3 Y) E. ?$ S: S! c' Iifelse(other turtles-here != nobody)[

9 i3 w/ x+ m! t& j" H+ T# S8 w) A
5 ?: a; Z4 Q3 a& S6 f$ w9 c) pset customer one-of other turtles-here
  x( C7 o6 g2 O1 {
% N) d8 y* x/ [, r
;; set [customer] of customer myself
% }9 }, }4 b+ e* r& T& t
+ i% u+ D; ~3 h/ u
set [trade-record-one] of self item (([who] of customer) - 1)
  |. f0 Z: a: a! t$ w' L1 v$ F5 F, ^[trade-record-all]of self; W, u7 p- w# d6 Z4 O; B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 t' U$ B/ E( O$ p# l% d/ K0 J$ ^, U$ s6 j  ?4 H8 m. y3 r& q3 G
set [trade-record-one] of customer item (([who] of self) - 1)
: G. I% l+ R/ ]# r# N[trade-record-all]of customer
/ S- j3 c3 a1 e" b
+ }6 q/ Y, c7 m) f$ [  D
set [trade-record-one-len] of self length [trade-record-one] of self

( J$ e: g" L2 P1 `3 ^; S5 }8 W4 M$ x! a, h$ d+ L
set trade-record-current( list (timer) (random money-upper-limit))

3 I! K5 F* }* G9 o6 n9 t( Q* d; [0 v6 `( m; U; V# a5 A* @) Q
ask self [do-trust]* k# m. x* C5 {. g' F
;;
先求ij的信任度6 j) t/ D9 A4 H3 C2 F; I8 }6 A2 x
5 V7 L0 z) ~7 |6 G2 c* j
if ([trust-ok] of self)
# U$ w0 X% A5 c) R, S- S;;
根据ij的信任度来决定是否与j进行交易[  a. L: c1 G/ ~/ E
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) e9 y+ N3 b. {4 {( u& _( {7 G
0 K) P* d7 f, h% s. c[
# z- S5 f, q3 Q4 t9 c; L

' X; D( o9 j- b0 o  I% Y2 a* T$ ado-trade
/ J% w- j) ~. k5 ~' T4 M8 [

$ L% n. c& a2 W* }2 iupdate-credibility-ijl

7 z8 F8 p0 Y  [' M$ A+ h& L' d& p2 u  K1 V
update-credibility-list
" k, y" |+ Y7 Y) }# e2 D

/ x/ u; V/ ^) j8 a% q6 I$ u% }2 a! g2 z! R
update-global-reputation-list
! e3 m' r) Y) I3 z8 G2 R% A

# b& W* a& a' M( }poll-class

7 i: Z, d5 @; y2 Z
" \! t5 _6 R3 n/ \' lget-color

6 u; e' A% u$ ]3 z: V3 w! R
8 C; A( n0 ^* [5 k# J1 h6 f8 I]], a. U( W/ t/ n' E7 \+ v/ W$ F
0 d2 V5 d7 l/ ?4 Q& d
;;
如果所得的信任度满足条件,则进行交易4 B$ l9 c/ \: ?* L0 s! M) ^- v
4 ^2 J  I6 I7 K" B. d4 R% x
[

  L# ]$ {1 N' h: B8 k- h8 O
" c  U: `9 p/ j1 B( J% grt random 360

+ W4 L9 k8 d8 f0 z2 A0 F/ _5 U$ P3 r# |  D% q
fd 1
* P4 _  @/ k3 Q& s

. F! h( F, ?& D9 h& O. Z]
- [& o, L7 L' ~1 o; H. M
$ z0 l; V. P8 n
end

/ e; Q9 p% u& N1 [1 ^& f# D0 o/ X+ ^$ D  s$ K) t
to do-trust & N1 e* K% E. v7 k
set trust-ok False
. u, T- P* o! j- ?  i4 _
: }' ~" S8 L5 C) D% u

8 Z- x0 A% V; |3 h5 `8 |+ clet max-trade-times 05 X0 i0 _& P( @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 e' x  N4 R- L
let max-trade-money 0
0 n* ?& L8 h% ?0 h! sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- c) _( S* ?; L8 o5 U
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 `) K- ]/ [% Y

8 u! h9 o+ H; I. ^

# X( a' N5 q& S/ G+ K7 nget-global-proportion) V; q) q7 B% T  r/ F' G5 J
let trust-value' C+ v# _% N9 h$ w3 B0 n9 S
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)

; m! @, J- F8 u9 ~3 r, [if(trust-value > trade-trust-value)
5 D0 B* O' H8 W5 l[set trust-ok true]5 W* ]- G* c$ m+ W
end
. A; X! u! }$ U# z0 K
5 E/ ^- G; Q+ C1 A* q5 ato get-global-proportion
) E$ @" K' W2 kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ G3 h" {5 v8 T* {9 Y% x
[set global-proportion 0]! R& E" N7 `# m" s5 g
[let i 05 O6 s" X! K/ R2 p
let sum-money 0# I) @8 o. _& y: ~9 d1 b" e) `
while[ i < people]6 o& b8 J5 J5 y0 p9 |
[
) F* J6 V6 n4 [" Bif( length (item i
1 D4 H7 a& k3 C8 j  u( s[trade-record-all] of customer) > 3 )

& J6 C+ A" t9 B8 F[
# P' C- `* p' C) Q( U; Y$ h8 l7 ?set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" k* J+ ^& o" B8 t]
1 Z1 L  a! ^1 e8 b]
& F! d" _9 C! v- }9 o- alet j 05 ?3 _7 X  N0 _9 U8 l' \
let note 0
+ m9 @9 q! D* v, @# D; |4 G& ?while[ j < people]
8 G& Y' I- L, ?% H* y; E) [[0 l& ~; F9 t% b! n
if( length (item i! F! w3 |- Q" A; f5 u
[trade-record-all] of customer) > 3 )
# g4 s0 a  n* H+ v* U7 M! ]7 ^
[
+ `  y8 b) _0 p+ D6 j( Y  Y; ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! y4 [/ Q8 T8 m; _' z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 Y9 K$ f$ A! f! |$ z! [9 O( ]7 E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 n+ I) j; i9 ]' [  d6 b6 I/ T]
8 X& {6 l4 _% N  W6 t9 W* h! Z' g7 u]) {9 C/ L/ |: p# u/ {# l$ V' u* E) R
set global-proportion note
& r; G$ l% F% V]
( _5 _0 Y# ^$ V4 ]9 o5 i# M# p# eend+ x  r7 F- {. e4 P3 w
- S, e1 N5 d. E5 x7 i0 y, |3 T
to do-trade3 n- l5 W, z* E5 H. s0 p
;;
这个过程实际上是给双方作出评价的过程* r) ?) o, u8 t4 g. b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' f  ]; F; T) d- p( l) e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' I2 i8 u2 }' W' n8 V3 ~7 cset trade-record-current lput(timer) trade-record-current3 c8 D' _8 s# Y$ v( V! [) V0 K( e* N
;;
评价时间
! W! b- O5 O% x5 T0 ^9 _+ V' Zask myself [9 R& c1 @2 y9 N" |
update-local-reputation' f: ?6 o+ k  s7 n% I) M
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 v6 N4 T- |3 k- U; w4 l8 k]
5 s, Z8 Q9 p9 w1 g: n8 O: v1 Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ b5 p8 D9 U0 I9 y: u. L1 o& I3 [8 \* [; b;;
将此次交易的记录加入到trade-record-one
5 F: t6 m5 ^& v, p1 }+ v- Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ i9 [2 o2 p' E  w, q  E8 F: Vlet note (item 2 trade-record-current )
3 T# v: n/ H% e7 `set trade-record-current% L/ b6 M" n$ z  J$ T. {
(replace-item 2 trade-record-current (item 3 trade-record-current))
% _" v. ]9 ?2 V, @% {
set trade-record-current/ ?5 R: X6 i$ j/ `7 x% c) |
(replace-item 3 trade-record-current note): u$ A9 a- }$ U# X1 t& A& e
& L* [# r6 A: w, k% K5 Z" ^
1 Z# P9 N, h: m3 e& Z0 A4 D" ~
ask customer [. C  j3 [* w8 t6 ]& e" p+ ~1 j. ]/ M: i. U
update-local-reputation- ~+ O9 {/ l5 U0 _
set trade-record-current3 v: Z/ X4 a3 k, v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: l# d; i0 {( k1 h
]
8 c, b$ Z4 M0 q) v- L9 {" k. }% Y( W6 X( H) S+ _' T! F/ i

4 v7 F# @& |9 q+ F+ ]+ ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 z: o; S' v3 N8 Y1 k
3 H- Y  e( W, h1 P! P2 w# p
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, ^+ ^- C5 x/ j: ^;;
将此次交易的记录加入到customertrade-record-all
" T) d: w3 s1 i2 I( Cend( O. C8 C3 {% i& t
# D0 k0 W# z- w9 x: x1 v8 Z" ?$ p
to update-local-reputation4 j* l' M' s) ]6 a
set [trade-record-one-len] of myself length [trade-record-one] of myself
, B* l; [+ x# k( H
% `1 W: D* L8 k" E  H" x" }. Y! p6 }- a! Y& |/ N$ r% M
;;if [trade-record-one-len] of myself > 3
' X* v6 ?7 @- ?- d" N/ ?! {! U
update-neighbor-total3 B% v! ~# T, [& m+ Q8 ]- V: `6 r: A
;;
更新邻居节点的数目,在此进行
- |8 s  U5 J  ~# _- A1 O: clet i 3, N1 J1 y! R( B6 r5 c# ~1 `
let sum-time 0
) Z. E; K: @3 O  @5 T$ E$ ewhile[i < [trade-record-one-len] of myself]5 O5 J$ v) }/ Y- K, M
[- k: w+ p7 N/ E2 T( a8 e
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" S: k+ ~: S6 X- |set i
7 H" M+ {/ i& g( i + 1)
, b( K7 m2 {! k
]
0 r0 B9 T8 P% F+ i- x8 k5 Qlet j 3
3 D) F0 n$ A  h" B; @( v/ e4 `) e8 jlet sum-money 0
+ F$ y. l( N4 l9 }; L  gwhile[j < [trade-record-one-len] of myself]% N7 n' w' y" W0 y, O
[# h/ }, `3 S. X9 P2 @
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)
4 e' A' U' V0 Gset j6 S! Q6 ~* |3 G* [* J+ @
( j + 1)

! `2 F6 k; P8 i% S  L2 j3 M]
9 K# x( T0 T8 [" V. Zlet k 34 I( d- h2 C  J( N" V- v! ^
let power 0
) U- @1 {. o0 h  X0 ]8 D" b2 Plet local 0
% g. l  p* p* ewhile [k <[trade-record-one-len] of myself]
2 P$ A. c. g( B) X( E  A/ ^[* k* _: ~+ t) S1 `; t& h
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)
( V. Q& h# O" ~2 L, Xset k (k + 1)
, c5 P- V# y* V6 A4 d]* i# h9 \3 `6 E+ l% B
set [local-reputation] of myself (local)8 h. z# v  K6 b2 ?+ P
end
% o) U3 l* d& T* H) B8 _4 c$ V; F" Q7 y' O$ W0 u( ]2 r" i2 }% t  }# @
to update-neighbor-total; B, ]( `2 h4 f  y, D) ]

+ g: T  C' U" e1 d7 zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- _( Z* {# ]+ T* L9 _
! h5 c" J; t% h2 H3 M4 @* P: E

& c, B( P9 ^' {end- Q# W: R9 _4 y! Z+ R3 ~2 K& Q6 l

5 S2 c, p& `" Xto update-credibility-ijl
7 j. u6 N" S: P& F7 f; V/ E' Z' i8 V" o5 v4 i" P- X5 m2 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。
5 |3 `# R0 _. S7 d( V( jlet l 0
4 x+ A% O( m: S5 gwhile[ l < people ]9 G7 X6 s0 d6 a" r2 I3 i
;;
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
* V3 {+ [6 T* }# D3 h, k[; ]1 [4 K# J* F# [
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 E6 j! z8 J7 w+ S9 ~3 U& r2 N" iif (trade-record-one-j-l-len > 3): z2 D$ @, S: |& M  k7 Y! O
[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' c2 M' _% v+ ~' q0 |
let i 3
$ Y2 n) F2 p" F" ]9 o% T) a# Xlet sum-time 0
6 S- Z5 k7 `5 Q: {1 Ywhile[i < trade-record-one-len]
% K" K% y5 i7 ^: i  U[" f# b3 }  k* m4 r( o3 [+ t" s
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 h  ~% ~% Z- A- a- m3 U! N# |set i3 `! X1 o' `  Y' b
( i + 1)

& t% l2 X  w( ~; l* y: X]4 m3 |9 y! p8 \: S4 x# y
let credibility-i-j-l 0, a7 M3 l( Q" s( |
;;i
评价(jjl的评价)
: W" o1 P+ A; @# e8 C) f: ulet j 3
$ H8 P+ ]2 g) l( r8 f) O' ilet k 43 k+ t/ Q# n4 A' ]  A# z2 |
while[j < trade-record-one-len]9 ~* V5 w- e8 o$ t+ x! y
[1 n8 r/ M9 C1 Z; C0 ?- p% |
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0 Q7 \; e) @4 `
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)
  C  S) o- O1 ^" k7 F+ b- xset j1 B: t% ]5 N* a# v" r
( j + 1)
3 ]( M0 d8 k4 Y( ?! }* U2 l% o
]
3 n; n' a' E8 }* P' f  W3 I% qset [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 ))
  T! ~6 {% S  V
1 n% b' l1 `6 o& s5 q) U% C
# |$ A) B: W- Z6 ^2 \
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& J6 a: c$ X8 @! b5 A
;;
及时更新il的评价质量的评价& w2 _# [) b. o& n6 ?4 `' x1 C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ h+ R( Y: g6 m, N% @5 i7 W
set l (l + 1)+ r0 @$ b. ]$ |- G4 ]/ q, h
]; V( y: l5 F; N0 h$ k9 J5 ~' ^
end
" u* K. d/ v, f5 h; @1 G
  {8 q1 j/ d, Z; D2 g7 Bto update-credibility-list7 x+ P  |$ X7 [  v" y) K, S$ T
let i 0
- `3 b* n0 U! z+ Jwhile[i < people]
- J6 M& ~, h, r+ K, \2 J# o[/ O' g5 p, b! U" L; u* `# H+ e
let j 0
5 q$ a3 u7 R: F" }' E1 Ilet note 08 f- l! D. _, v: h8 x
let k 0
- ~: ]' h1 B6 V0 A' b;;
计作出过评价的邻居节点的数目
* P! H! P0 _1 o& B4 Rwhile[j < people]$ _/ x5 _" r7 k9 |5 O# ?; Z% j) o
[
; i& F% E+ o) `4 }if (item j( [credibility] of turtle (i + 1)) != -1)) a3 R4 V' \9 R2 K+ I) v
;;
判断是否给本turtle的评价质量做出过评价的节点
0 u0 y; l% u- P  C& q: @8 S( [[set note (note + item j ([credibility]of turtle (i + 1)))
8 _+ f6 k4 V6 p* i/ Z) u;;*(exp (-(people - 2)))/(people - 2))]

7 t2 P+ f! r) Z' Bset k (k + 1)! O8 f) K! S7 w5 ^
]+ @3 S% R3 F2 P/ D
set j (j + 1)( Q( q+ O4 ]" F9 {
]2 D- s8 @$ B5 U% |' g
set note (note *(exp (- (1 / k)))/ k)1 f1 ~# O+ v7 w( Y6 a; h( G8 T
set credibility-list (replace-item i credibility-list note)4 k; C) p& R% l* W; l) m. w; r
set i (i + 1)
. p$ t4 n- n) W  q5 G+ D. J], s8 B$ N$ A  F% [# ]* L) p
end
, e; k' u( r5 `: E2 N$ Y) B
5 x/ [6 ~1 t. dto update-global-reputation-list' l+ V/ B' T% [1 }1 [! M/ I
let j 00 P/ l. |% P, c/ f6 U
while[j < people]! ]- m! N- b7 U6 k5 N$ z
[
( v! Q) ^* P4 W% G) e1 plet new 0
+ m) \0 T5 a% S: \8 p" `5 s8 T) i;;
暂存新的一个全局声誉3 E3 B: \( X  e" L/ q$ g
let i 0
- {* t# w& S% T7 S# c7 p- ]* blet sum-money 0
4 c" A5 K$ E; H% u; Olet credibility-money 0
+ d5 F5 U/ x. j% dwhile [i < people]; D$ ]' }5 D% \& I
[+ w& E5 ]  b7 z7 T4 d
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  F/ W5 \2 C3 C0 q- {; n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 M) ^' J' a- nset i (i + 1)7 R1 P: t4 [5 F) p/ U" I
]- f7 r6 }+ ?5 j6 w- @0 T/ }
let k 0
- [" U: v- W5 R% ilet new1 0
+ p& P7 q5 Y$ {& H7 w+ L8 I& Gwhile [k < people]
; P) Y5 u7 j0 f7 e! o* {2 W9 G# V[  U. U& H5 l% c% ?2 s- E
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)- A" N* ^- F  d# K! Z
set k (k + 1)% Y% H/ `6 ?" a! p/ E
]
: _) D2 n; G) V' g1 Dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; S& a* F+ B# E/ i# g" Q% p3 C
set global-reputation-list (replace-item j global-reputation-list new)* s: j6 V6 D2 i- d1 j; B
set j (j + 1)6 r# V) j1 |+ h) }7 _/ R  M. }/ C: d3 x" Q
]3 |" t8 P5 |5 `/ G! k5 j
end: t2 M3 b( a! J

  C5 m" k: s! v. M% F5 g2 @* Q/ t4 m' U3 ^- o% Y

  t" d* L4 j- l$ i; F; R" o* kto get-color
# b; s. R  y& j4 D- E) a
# s' d( T; G3 ~; K0 Iset color blue
4 P% q) ~# C% }- H. z7 v
end
& A; k9 y7 v8 P5 l" T3 Y9 D; S& H) `! r0 W4 H
to poll-class7 f+ A( c, _+ @9 a( e) y
end! G5 a) h7 `8 G; S- [5 x* `: o3 l

9 H: A  Z* e8 eto setup-plot1
  V6 g( K+ g0 s8 z9 S
! z& V& _5 V; V' Yset-current-plot "Trends-of-Local-reputation"
/ T9 e" o# x* {" Y: t- g: K1 J

6 ]! V- o" |: f* {( g. w& Y1 tset-plot-x-range 0 xmax
! m6 P, w3 q  B" e

) y; b/ s3 ~2 J! K- r/ A: r& Z, j( ^set-plot-y-range 0.0 ymax
3 X1 l, e" P' {
end
/ T& J" J1 K* C' c; g" `. Y+ o5 B, e5 I; V: b; i4 m
to setup-plot2
; |" k% Z5 X5 ^  l; K8 C3 x: ?
) o' L" ~' \% j  P; mset-current-plot "Trends-of-global-reputation"
$ N0 t: a6 f, p% E9 Y; ]4 c

' t4 K# I% y7 h* T6 Xset-plot-x-range 0 xmax

9 R6 E* q* m- z- B& Q4 ]% c* K* ?0 i# I* B) e/ j
set-plot-y-range 0.0 ymax

9 w2 a3 j+ g9 Z* r/ o" J$ Nend
- R2 h/ W: Y/ V9 d3 w) E0 h# C  f3 M
to setup-plot39 G: n3 {9 M7 K8 }
6 v3 O7 P) ~5 \) o
set-current-plot "Trends-of-credibility"
9 |7 v" F' l: v4 H6 ?
# {% E; }- E7 p& ?5 O; F" A/ a  |" [
set-plot-x-range 0 xmax

/ y/ g7 p& j% H7 t: s0 g0 ^( ?' r# |
, z. M8 V, a2 X& Sset-plot-y-range 0.0 ymax

2 I6 M* N4 u6 t$ q+ y4 nend2 D9 a2 a/ D1 v7 \, x
5 e& |. d" w; ~; U+ W# x. }5 {$ d
to do-plots
; M7 C3 u9 ~- Gset-current-plot "Trends-of-Local-reputation"7 T- d; U  S# L
set-current-plot-pen "Honest service"8 P+ O* W2 @! t6 f
end
8 x# Z. w0 a4 e5 }' v3 M; i2 }' _0 |+ g4 f) U
[ 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.
" Z8 t. h  D- ]. R: d, q: @
, g: B$ s% k0 o5 v9 C& T6 a8 U/ [5 H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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