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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:; I2 ~9 k& ^' E
to do-business ' Z" }' y! Q- ^2 f) Q! S# c3 A
rt random 360  X) K0 x, p/ H
fd 1
% u; E3 k+ m) w8 x7 K6 Z ifelse(other turtles-here != nobody)[
2 m: k0 f9 s" J* ]" H   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.
5 B9 g! q1 y" k6 Q* }2 S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- Y4 t( {& S( v1 N- G3 `9 h) m   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 `# x" N4 d! e" X! W7 v9 Q/ q1 e   set [trade-record-one-len] of self length [trade-record-one] of self  f+ N0 K" @& l& @7 K
   set trade-record-current( list (timer) (random money-upper-limit))
$ L# _& ^, i1 U. a6 b! j* r. H7 ^1 w; ]& u8 ^$ q
问题的提示如下:6 L/ u/ u  [; n2 b( T) A

* A; m6 m6 _$ F$ Cerror while turtle 50 running OF in procedure DO-BUSINESS" U0 o6 O9 u- e# q+ S
  called by procedure GO5 U" d8 W/ t& P6 Z3 q3 G' f2 i' n
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 I, J* u, d7 m2 H
(halted running of go)* Z* ~$ x2 d0 A7 y7 @

' U2 N4 H3 C2 B" r+ c0 S( e  c# t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~~+ C& ]8 c7 [4 |& l8 n1 _# E. Q: `* \
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
" o$ B& I' w- ^& Q( o$ ?) Dglobals[! u1 ^4 Z) ]7 ]5 E+ J) {
xmax
* q& O  C1 n3 ]+ z2 E9 S# ]* tymax
. J4 |) i; b, b" E, tglobal-reputation-list
9 H( N. ]; l+ q" ?+ f
% H6 }& Q1 s- d;;
每一个turtle的全局声誉都存在此LIST$ f/ c" n4 C9 P8 w) I% O, @+ _
credibility-list5 p$ e( L) y! ]# ^. @
;;
每一个turtle的评价可信度. A% }0 }8 T+ L; ?, @4 u
honest-service2 r3 m0 d' x" |! j7 z
unhonest-service; t  H# Q* g# I! O
oscillation/ ^8 K8 h4 b- t! v6 |
rand-dynamic5 Y( d8 o, D2 s: b" h' g
]
) M& R: w8 A. _" y9 n- @1 k; ~/ v! ^+ a; I4 P
turtles-own[
& S0 W; w, c/ ?" G; p: z# `' Itrade-record-all4 ^  N, _9 z- g  b* i* w/ |
;;a list of lists,
trade-record-one组成
9 b6 }4 G" _4 E: l/ `6 D5 C( _trade-record-one/ M% A! W8 w+ C0 d: j, v6 Q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 D8 j% l8 x4 }5 L- e

# R7 k' J0 a0 ?7 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]]
. v) e0 N. ~/ k* Xtrade-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]; u& T) W: f" F3 T
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$ H8 @$ d2 A5 k
neighbor-total
: n4 j7 C, t8 @: _& h) M/ \;;
记录该turtle的邻居节点的数目
2 u! A, Q& [) ?trade-time1 w1 S1 }+ m5 q
;;
当前发生交易的turtle的交易时间
, h; c6 F3 R$ d4 p; d/ F! Aappraise-give+ F2 L" Q) F, \" h* y* K+ E
;;
当前发生交易时给出的评价
  z' v' |3 t" d1 {appraise-receive! W( x" e0 Y# i: C
;;
当前发生交易时收到的评价
1 d" F( h& ], N5 v; ?6 e4 Tappraise-time* k' H$ X3 y  W- i$ f2 K' Y
;;
当前发生交易时的评价时间
/ ?8 S  ]  f: {local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( V" V1 q( I8 L& x. o0 itrade-times-total
5 d/ J: L8 l( \: y* ~; L& W. [;;
与当前turtle的交易总次数. k% |0 e2 |9 A3 W6 I! C1 g
trade-money-total: j; T4 F6 v* R1 A' |3 t
;;
与当前turtle的交易总金额8 l5 _3 U7 i0 @1 {: p- I% ~' c
local-reputation& d4 R* ^0 T. z3 _
global-reputation5 f( u9 l6 H9 e9 ]  p( f
credibility7 {6 Y# k; n( E, A$ a& q
;;
评价可信度,每次交易后都需要更新- k. \1 k! O. U; P5 k4 `3 z
credibility-all
9 S+ h' Y) ?+ R/ {;;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6 J& [4 \) b/ V( A( E8 E6 `

  R/ L4 C3 w; O, `+ A* f8 D;;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
: D: n! e9 a* t/ hcredibility-one% V0 }: {; y2 ~% Z; F) t
;;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
0 I; |0 x) r- @1 I6 rglobal-proportion
8 W$ X; w8 Z: d: rcustomer: c2 Y$ A# Y9 g. Y
customer-no1 I' ?2 W7 ~3 B0 I. ?& P
trust-ok: N7 j9 ~" |# P. ]
trade-record-one-len;;trade-record-one的长度/ S5 Q7 n) |* d: l) y' {" {( J
], `8 m" x$ {0 ^+ Y3 B- K. B+ i
+ @0 V$ M/ Z  u! R+ P8 c3 q
;;setup procedure
% {* h% F: B2 h/ k/ J7 j- J7 e( \7 B) \' B; w" d* ]( Z
to setup
8 `2 S; @: V! K8 S4 Y) D
9 W( R1 X) C3 s2 h: y# _; nca

( n3 f. t% f3 I. F. ^! ~5 d4 z
5 Z0 Z9 l0 G4 V. k, ?$ finitialize-settings
3 G0 E% b, [# `: ^% A! }

, }; [" a9 u9 b4 q& Y* U! Ycrt people [setup-turtles]

; _9 @6 h: e8 c3 \0 A- Z+ D: J) S& [- ]+ q: B
reset-timer

' F# j  |- J( g0 a4 }8 ]) w* ~4 q" p
poll-class
" A- |; B; `) q( p2 i. s+ [9 a/ b7 r

$ d/ U- d* V+ t. _setup-plots

) {2 J, [3 L; @+ `" W
- o2 L8 K! t- z. @do-plots
0 a% J2 N) I$ P# d3 b9 f3 T
end
/ I; N( I8 x6 C) N1 r: r& s* r" O
2 T8 S) D% T9 eto initialize-settings
7 j" L: C. N. m9 O' Q
0 ?% x: X" U1 a% v- Z$ {/ Q. rset global-reputation-list []
- y( t' X1 z/ F
% i2 x! Z" I0 u
set credibility-list n-values people [0.5]
* a: t8 R% j$ N
) i) r; |; k( T7 |* m/ ~; P. R
set honest-service 0
9 C: I  e. ^' O4 G

7 Q: y+ F0 D0 ]& Uset unhonest-service 0
& _- _+ }0 [7 I# k" Z4 |( O

5 ]3 Z) R% z7 M; ?8 @9 r% J# Bset oscillation 0
+ H4 N# Y# b1 Y+ @; N: _7 P# S5 z+ r8 f

/ K, {$ g6 a- o0 Aset rand-dynamic 0

" o: F2 m! O/ V& r4 Z& a1 Dend4 Q8 ?4 F4 E% k9 e$ f" v5 M6 L* l$ I7 [

% q7 G. r% |4 _( N$ C  Kto setup-turtles
& |) F- b) B' C5 Z" bset shape "person"& W( L7 H' A* n) e
setxy random-xcor random-ycor! k* g9 G( W  x4 A: y
set trade-record-one []& U9 _4 o. J# z
" i8 w, e$ ?$ M! Y: Q0 r
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 u4 m/ E6 X8 o( v" e3 I8 ?" J
2 B6 V$ r9 y+ ?8 j1 f' M" u: N9 ]& X
set trade-record-current []8 Z- B$ Y* a: V5 ~7 \/ N8 w* E- ]
set credibility-receive []! H  F/ \6 G6 {/ B8 U3 ?
set local-reputation 0.58 V' Z/ M2 y& c3 H
set neighbor-total 0
, Y4 \! @- Q/ K* Fset trade-times-total 04 Z5 m. P% t8 y
set trade-money-total 0
7 k  z" ]( [9 d7 P; g' ?* X% ~set customer nobody) g5 g& L/ W) p3 v4 G& E
set credibility-all n-values people [creat-credibility]
' Y  {7 `- ]9 w6 r! bset credibility n-values people [-1]
7 B0 g' h6 X! A0 Eget-color% z' {9 G% y: o! ~" g6 S$ V
3 h% M$ l# ?% `% x9 [
end' @" N" w/ c8 u0 [: `! n! G7 p
0 o4 T6 L% S7 N3 N$ E7 R) L
to-report creat-credibility; I9 N7 q5 [* F. z( g
report n-values people [0.5]
5 u# I* \8 y- p! f) tend* Q8 c# s, J# E0 y$ v4 |! X
3 B5 B# v2 g  b
to setup-plots
# d% @4 m! a% O2 v
' |2 n/ I2 r  \3 f2 hset xmax 30
6 Q: ~6 n7 [- p# ~. J' T  a

, N* l  z+ C8 u/ Vset ymax 1.0

8 q/ W% k7 s8 L7 C/ w
2 f: w3 U/ c7 i2 B* x! @clear-all-plots
, M* b% T- }$ f

% i2 q  p4 h3 Jsetup-plot1

. h: _! k! l. `9 W9 }
$ a( R) T1 K1 gsetup-plot2

: d% h0 [' H% b  q, @/ ^+ I
4 U+ x; k8 w/ X0 n2 B" Nsetup-plot3

% T& g9 ]* W: g1 }  S1 Y/ ]end9 }5 ?" \; d. J4 J7 {, u" Z
2 J4 R3 B4 N) C
;;run time procedures% C7 E7 |/ m' J- s( M+ i
; ?6 T4 |! D2 G) L: k
to go- t, G9 u$ {5 v6 C

* r8 s& d  n3 \; r* a- u6 Q* l, Cask turtles [do-business]

. N. ]$ m5 D& a7 x/ _8 [! R1 Mend& F- w5 D' c- I5 k9 I  k/ {

; \; ^8 |6 Z8 `  y/ X0 Y& eto do-business 8 l" l( j6 w8 i) X6 z: A9 c
+ w  m/ V6 X( m! _" E6 C
3 {1 h4 Y! {! I% v* V
rt random 360

6 f6 l8 ?! [2 v7 o6 O# Q" D* W! J3 H  j/ B( }# M4 |
fd 1
4 l5 o+ I9 a5 M/ T
% V) P" L- e2 t- L* ]5 H3 ]$ ^$ s
ifelse(other turtles-here != nobody)[
* @3 a9 y2 i" u' t5 M, _+ A. w" b

( h) _) N5 I) p% u* \9 zset customer one-of other turtles-here

3 _  F2 @2 P1 j& H6 m
% @3 i$ e7 ]3 ]  {8 a- i2 h1 q6 l( S' c;; set [customer] of customer myself

6 D; j1 U# T8 M3 t/ U  K
* ?9 H0 s9 x) iset [trade-record-one] of self item (([who] of customer) - 1)7 W( ?% R' @5 g
[trade-record-all]of self
$ A7 D6 X: a( O" F! K5 a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ j4 `: q! {1 x. K9 `8 V. S/ F* r5 A0 a# n- \
set [trade-record-one] of customer item (([who] of self) - 1)  z! V9 |/ [7 J1 j6 }
[trade-record-all]of customer
$ O/ c5 y' P  E" h- i( l" q
# h4 [  J7 |5 q# m' |& w1 \
set [trade-record-one-len] of self length [trade-record-one] of self
! m. e" Q* ~6 F$ K# P

# D) U! i. _! Y  u5 p3 b6 Tset trade-record-current( list (timer) (random money-upper-limit))
& x! Q) o" `% ~

5 E. Q! G$ O: y% \3 V- I  Mask self [do-trust]& `2 z7 `7 k- K7 v2 E2 z
;;
先求ij的信任度, e7 Q9 l9 q1 `( e+ H

- X) j2 s9 p- |: ^, J8 y$ wif ([trust-ok] of self)4 D* l* @. Q# v0 Y
;;
根据ij的信任度来决定是否与j进行交易[
- p: q. O& W7 g8 B9 {+ E- Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& N( ~% f& V( t2 b8 p4 W' a  L$ f
[

1 x5 [5 k4 m, {
3 {% S* J* i5 k, Q+ u2 Sdo-trade

' W4 T/ l6 \! N+ r8 i5 A; T6 U* L( x2 B/ v+ v9 x2 X, T; D
update-credibility-ijl
4 Y3 Q! _+ l* g" [+ V0 [/ V# N, a

1 m0 E# @) F/ z# G8 a. oupdate-credibility-list; P, p1 w" d8 `

$ c, D( ]& S6 [6 n* J9 W
; d0 ]. x( H' G# w  @4 G0 Qupdate-global-reputation-list
* W  P6 n2 R6 ^! o

+ K) x$ D9 f' p9 V/ @" h- ypoll-class
; D- K3 s3 D$ [( ]
+ y( U5 O) N3 O% W- j; n; q& n" n
get-color
6 @0 {; ~% {0 k0 t8 A' y/ n% H

& }. r: t" b( j) b2 J3 l6 H+ e]]
0 W7 X7 x: |& z8 @3 h# S! r3 s1 R1 n
;;
如果所得的信任度满足条件,则进行交易: ]8 |9 P$ ~2 a! @4 R) F  N: f
9 o* @( }: Q: M9 V
[

# g1 {; y; Y5 I6 b) h9 _$ B, g) U/ ?! B+ ^5 \4 R3 R
rt random 360

5 x  @, v/ m4 P- Y/ U9 b, @
$ N8 T0 b- k8 o& J8 w1 p5 Xfd 1
" k% q' @. i' z/ P  A: _

& w( C, s8 {6 S0 L3 []
% b6 o' @- c, O& @  D0 _
! A8 m2 j/ n2 F8 `: ?
end

% x, K9 |4 B. |$ @2 N9 o1 u0 q" S# d7 ^8 }: D0 m( c
to do-trust
; h0 l7 {. P, m: S' a+ q; y: t. dset trust-ok False
, Y1 ?4 p! X5 A, t$ i/ a+ e
- N0 n/ v+ J1 r6 E1 }4 J% X/ J
4 x0 ?9 [+ J( t1 q6 t
let max-trade-times 0
" v. ~6 `3 P( y/ M! Nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ |6 e3 I8 o; I. t( U+ _" Y' ^( K
let max-trade-money 0
) s: V) s2 W8 z8 e  Z& |9 A' N: cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 c! e" ]% C& f' x& P+ L- V8 q) _let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 ]2 }9 b$ f" f- J1 U+ L

, j5 f; i2 e% Q4 t

& i- J" b, |( [get-global-proportion
+ h# m2 J& D0 W" z: plet trust-value$ o4 P" Q8 O# t- f. y
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)

* a4 [9 @. `7 F: Fif(trust-value > trade-trust-value)6 {8 ?6 y* }# I! g* _5 D) W2 c" L1 o" e
[set trust-ok true]3 f6 _8 g% G3 |/ S7 b3 x
end
3 Q, n; b# `, G5 f/ ~8 ]  t" g/ x+ P% Q/ i# J2 Z# ]
to get-global-proportion
1 D' N0 ^* ]- ~! n3 aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 R/ w) [4 q+ I. R4 I
[set global-proportion 0]
- r, y* r* E6 ]' n  f0 S5 Z( _[let i 0
+ ?  Z" X, U- g, m' Llet sum-money 0
# R5 Y+ U9 p( X0 g- S! lwhile[ i < people]0 Z' ~$ W' J% }
[! B7 ]3 [, J5 U' E8 ~% s1 Y
if( length (item i
% Y6 Q2 ]0 x; _& D4 A  E[trade-record-all] of customer) > 3 )

- J2 w9 M: {' y' x* \# l[
. s0 R9 q" F7 U4 b$ x+ o9 Q; C; Gset sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 l( U! x- L- l6 Y
]
' _! X: {; u1 m% }" U9 {( y]' L% E! y4 C4 X  _, \9 Z
let j 0
( r, r8 Y! S' p/ ~let note 0: }8 x: Z/ k% a/ |3 K
while[ j < people]
1 A- R. }  z' |5 n+ _) t3 f" u6 u[- }% F$ K3 {2 P# N( |
if( length (item i: v" q, M) N' t& V6 @& L
[trade-record-all] of customer) > 3 )
. ]. {6 v$ ?1 g8 l3 ~* s: i* v
[. O. c$ F% y3 l/ }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& H4 d# g4 A- Z9 d: |: U
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% a. s' Q7 E; ^. R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ V" \1 c- }) ]% q1 U3 G]
! f7 v' [. _; W" K3 V. B0 Y]' R! {5 M! M- y7 ^
set global-proportion note
4 U9 I5 z: V4 a5 y]
  ~; V- s7 H0 d) q' e2 s* H' H( Uend' S: C: Y0 ~3 ^8 x7 o* e+ ]

) W; W! ?! X! V, Y8 A  |$ o5 N9 n5 vto do-trade0 v3 |1 g$ \. D2 Z1 @! B5 `$ L
;;
这个过程实际上是给双方作出评价的过程/ }; i. i1 M+ q7 I8 ^+ \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ N0 [6 \1 r+ [8 f+ c3 C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 Q/ ~# B" S- Q  f
set trade-record-current lput(timer) trade-record-current
4 V. o! m4 n% ~6 r5 B;;
评价时间2 Y! z1 f+ ?) j% S
ask myself [
/ `! }. J1 a4 b$ T0 \; Vupdate-local-reputation; C; x- @6 ~- O7 v5 t$ V' h, n
set trade-record-current lput([local-reputation] of myself) trade-record-current2 I' j2 T1 [' k" `# P
]" W& f9 O* q: N7 s( P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" s( z6 Z( {2 d4 x/ |& d. ^
;;
将此次交易的记录加入到trade-record-one
8 y* H7 l" A* @. @6 n' j) Xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); I0 r0 j0 o9 P( J) ~" |" p
let note (item 2 trade-record-current )! Q! c# Y. v. t# Y
set trade-record-current
5 Y0 `; ^! S3 m7 b(replace-item 2 trade-record-current (item 3 trade-record-current))
$ M- _/ D; ~  a" X1 D1 o
set trade-record-current9 ]! R  ~- W; H
(replace-item 3 trade-record-current note)
% |3 B( K+ p% d8 a4 Z: Z0 }! z
/ t9 B" x8 Y( z- D  g( O
/ I4 }5 m3 l& d! W& E& p8 A6 e
ask customer [
/ n$ x! n% e4 D0 _update-local-reputation
$ Z+ A: o$ m& b& V4 u5 Zset trade-record-current( _" w; }5 k& ^- \0 J6 x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. G/ B+ t2 u* T8 S' M! u+ h4 _8 c]/ y. E. |: K' N

4 A! L" j1 e  T

% X8 ~. {( j7 L  xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ {9 ]: G: o9 t
' S- n- T( S3 q& ?/ g2 e* `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% o: K' Y0 l* N- L3 }
;;
将此次交易的记录加入到customertrade-record-all, o6 @' f( e/ M0 S: j! {
end+ H2 Y9 z4 h5 d  G9 [/ Y! I
+ j! q' s4 I" \3 N! E
to update-local-reputation8 M: w) k: O( f
set [trade-record-one-len] of myself length [trade-record-one] of myself  v# o9 ?7 J% K6 Y% G% ?
2 }) O6 z# `1 G# N

7 Y1 J" M) u( p: l* F9 v;;if [trade-record-one-len] of myself > 3
3 _; N$ j' `1 |7 [: m1 s" C
update-neighbor-total
9 c2 b9 |* a0 y3 M* Y;;
更新邻居节点的数目,在此进行5 {: [8 [3 F3 r2 {) [' S+ G
let i 3( P. U7 \: ]' m
let sum-time 0( H+ z: H. b) d2 s! E; Z  V& _
while[i < [trade-record-one-len] of myself]4 k8 f* m9 Y, x4 @% F7 X( B9 p8 N
[: E" I% b& n% ^( |  d
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' _6 W+ x$ c, ]: s, D" Rset i- y2 {+ _6 f1 ]- r
( i + 1)

9 o* G0 V; E' H# d% r! O]; ?0 t- q5 q: E" ?# E1 }/ c
let j 3
% E- q6 d7 G& G$ m; ]let sum-money 0
" n/ d# s) L# s; P" H+ mwhile[j < [trade-record-one-len] of myself]" q) k2 k) i* k1 ~) m# t+ n5 S
[' Q2 J9 _: l% ?# l: A0 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)
) P: o; C, J9 Rset j
+ \. F/ M/ w8 [. A0 e7 J8 V) }( U/ X& y( j + 1)

- A: h; z# O; \& T* x/ d7 k]$ m" N. g# ]3 [. S( @% J
let k 3% g# |' x4 E; u9 t0 {
let power 0( C) ?0 l# X* T/ }$ H
let local 0
+ O8 w3 b# Y, |( K+ v. }while [k <[trade-record-one-len] of myself]" H" ?' j5 V- `. g! K- \( b+ W
[/ U1 p, d6 I% S! v; o
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) 3 ?  m8 f! e) z, `* X2 a( ~. V
set k (k + 1)
/ J& e. N+ o. k5 k1 q' n]
1 ^) t  f0 t6 _8 I* `set [local-reputation] of myself (local)
* I$ l, D) F5 U# Gend
) j. q) b2 S% H; w5 b# o
, L% e0 ~3 x$ f5 q* qto update-neighbor-total8 E1 [7 e( e* v# Y

! @8 P6 ?% }4 d% u( s4 vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 ]! R9 M3 o9 b; i+ u8 V" C: f) f: h. R# L! S8 E
; K, R2 B- X, w
end
$ \) {9 H8 X# ^5 R2 p  E( N, y! p$ \) I  p% W
to update-credibility-ijl
4 c6 }  R' C* a# |7 }3 @5 _
( ~; D  @6 m4 }" H/ v. v3 g;;
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。# B8 C* o9 x0 X9 g* l" I. @, c
let l 05 ^% y/ l9 h5 N! q2 t' [
while[ l < people ]; ]$ \; R! ^  x& \* o
;;
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
& O# x5 k) t3 y3 e[
4 v& P! q" R- ~( Tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 ]; b! M# Q+ R
if (trade-record-one-j-l-len > 3)
: F+ V  V0 ^! L  A. T. d8 b7 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
. V" d! W( V. V' _  Glet i 31 R* Q6 _4 r5 l0 [" d& S
let sum-time 0
# z, H! _. B8 rwhile[i < trade-record-one-len]8 ~- t. [7 D- t" g) R2 }$ Y: K9 S
[* }) x5 L& P* f" |* O* m& {# R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) w1 n6 r4 J0 Y* B
set i: y$ v4 G& u: m* l; X9 V9 c* R8 x1 A
( i + 1)

! ~# Z9 C7 p4 B]3 X; V2 {) h; _' ?3 z
let credibility-i-j-l 0
8 j6 {, P( N8 C3 \; v- f& q9 L, |: j;;i
评价(jjl的评价)2 P$ _/ g1 B" K- A; o2 s1 l: m+ ]
let j 3
" m1 E9 G1 g; i+ @# _( llet k 4
% P) ?9 B5 S3 z4 l$ lwhile[j < trade-record-one-len]
  T8 f0 c2 A  P6 I$ s5 {[4 F5 g+ {" |+ [+ {
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% ?2 y5 t1 M5 q& g
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)
' B) \7 r( |2 ~" L+ H; Aset j; z0 w$ d% B  f
( j + 1)
( M) m; B. X/ }4 l% R% K0 x/ J; O
]
% C; {2 W6 y( j' a) b# nset [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 ))( J4 |  a; ~/ A

$ V# O- Q( _( t$ S  T0 \, X
( e  b; D# Q* u5 U, D2 P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ f/ `5 g& F+ }6 p$ w' v7 M
;;
及时更新il的评价质量的评价
+ D: Y; H: U% ?' y" zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 t8 m* o% p, `+ {* B" r
set l (l + 1): B( T7 C' @! r' J- L% U5 G% z6 B
]
$ n  c1 D+ z& ~5 lend, r& Z3 e. v; M3 J

( x, r0 _/ f$ t$ {# O+ Rto update-credibility-list0 ?& `, _- i* L9 s7 v3 j
let i 00 F* o" Z* V& d: H: e% X7 n
while[i < people]
, _3 S* A: W) H8 F; B[
0 j) ~- B/ p2 ~* E" x# Qlet j 0
7 z' g# x8 P8 P* E% Slet note 0
! _/ F5 d8 H6 z+ r( ?' l: mlet k 0
8 t" Z; b. J; O! g;;
计作出过评价的邻居节点的数目
8 i* |9 K# |5 S& k' f, P! {6 S6 c" Zwhile[j < people]7 v# S1 c- Y7 i0 |) G0 o
[
7 L  _& I! `1 E6 D$ \% o/ z* H: Jif (item j( [credibility] of turtle (i + 1)) != -1)
# z& O. u% I$ n9 S* C;;
判断是否给本turtle的评价质量做出过评价的节点
& o) C; O/ _- l[set note (note + item j ([credibility]of turtle (i + 1)))2 n9 T7 e7 F0 e" f3 k
;;*(exp (-(people - 2)))/(people - 2))]

. `  h- ?: n, Q% {set k (k + 1)
- g3 I; s" {5 w& O" I6 x8 K8 ]]& K( v. x: D- n/ w2 g
set j (j + 1)' h& {/ [- I, a# Y6 ]
]7 |! K; ^( k. t: K1 B
set note (note *(exp (- (1 / k)))/ k)
7 E6 y, ^/ L# X9 Eset credibility-list (replace-item i credibility-list note)& w/ Y" p, X' A4 h$ B. {
set i (i + 1)6 ]% {* P% y, U7 y; T- O
]9 c! e, |* h+ H. t; f! J! V; c- _6 G
end! d1 e+ f0 k* F& S# z+ [- l- r  s; S- F

4 ~4 p& L1 O# F( rto update-global-reputation-list
5 y/ A5 D2 J2 |7 C/ h( Y" Hlet j 0# O( I, w. `: v+ \( C' x4 }2 m
while[j < people]
0 B7 p+ m4 y7 ]$ v$ ~7 p[& I2 L( a7 Q/ G* `" ~7 u
let new 0$ \* k' K2 m8 j
;;
暂存新的一个全局声誉( o5 R9 p/ M6 m. m1 X
let i 0
3 h6 {0 }, W/ X) dlet sum-money 0, u& ?# W' v( ^1 d: x) m9 a/ {
let credibility-money 0- w" v3 L7 b) {- a" W
while [i < people]
+ Z# p$ z' A' X[) d+ n' _1 @. r3 j* \: J
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% o) o% b; N7 O2 R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 C, \( r; o6 `& q8 P% e8 y! ~# Z+ E3 fset i (i + 1)
. J4 Q- s! z% g4 X2 v]
+ B3 A4 p; y' Q9 i. H4 N; \let k 0
# q5 }2 ~3 y0 C3 p; p5 c8 qlet new1 0
2 t- N& H9 a: N# X) Dwhile [k < people], Y0 n* k4 u  Z0 `0 b
[
# M" w: P: D" Q' G3 [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); _, \4 ?1 L9 [5 r: m) b
set k (k + 1)
* Y# e  [5 v! U  {% u/ R]2 \  Y/ P0 o4 |# T; I* ^* O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " r) |( Z2 A! @0 i" H$ Z3 [
set global-reputation-list (replace-item j global-reputation-list new)
- h& O4 N  E- ^; W- h$ eset j (j + 1)
' f/ f1 j9 a) s4 l7 d8 {5 _/ I]
& w- G; Z; \- W4 {end
' B/ N0 E; V. h) I4 q. x, U2 u! }0 t; w$ B2 S1 A
* G; }7 V2 P: t

. t' i. t) i3 z: }! r- \& Rto get-color& w) |( m: A8 `' g
3 G7 u/ y  p- P; V% H+ g
set color blue

( |8 P) ~2 [& A) y; D7 I% Rend9 i( R( D3 o9 D4 t$ S

5 a& Q9 S: K5 J- }9 Jto poll-class
% T2 _. K$ v4 s' vend
, W0 w$ \0 k& h$ i4 r9 C% j& @( Z, c! ^  X
to setup-plot1
- A5 R1 x- U. V1 K3 e7 N# w$ d0 E2 W4 J* }9 c
set-current-plot "Trends-of-Local-reputation"

) g! u( A$ v2 v% L; m& P1 n$ \( Z3 `& {/ J  k
set-plot-x-range 0 xmax
" _0 X  n6 R) O" H/ E  p# V" V) v
7 N: j7 C' {2 n
set-plot-y-range 0.0 ymax
5 p! N* P" ?4 `. j; Y
end
3 m4 M' v4 S7 n; i# }  ]9 |0 e$ B2 o) U
to setup-plot2
2 l( A8 [* o* J! G$ P3 J+ L$ b4 {" e
set-current-plot "Trends-of-global-reputation"

2 e$ I  J9 m& e
0 N. M- E8 x; K3 Q* Zset-plot-x-range 0 xmax
7 x- C; R9 T* t6 M  ^

* l4 B% x, L8 q8 Zset-plot-y-range 0.0 ymax

1 }/ r, u0 i5 E4 H) \( lend3 H: T4 U% w( F( k7 Q* l
+ H- S3 a. _* g- @
to setup-plot3
$ L/ Q+ [. x. E4 R5 `
; y/ d6 y1 T: l) a+ k. ]set-current-plot "Trends-of-credibility"

& |/ G0 l9 w+ Z0 _" {. T
& w  M$ i( D0 y( \set-plot-x-range 0 xmax

' D5 h) V* T. V. p/ ?7 C# T: ~; q3 C4 w
set-plot-y-range 0.0 ymax
' `4 X8 z6 b5 D4 Z1 R
end
. [  X7 G9 O- k2 ]: x! L6 o  Z. U7 H* a! s) x8 H9 |
to do-plots
3 g' H( k( r$ Q5 w- `set-current-plot "Trends-of-Local-reputation"7 y# A5 `5 d2 r; I! ~7 v
set-current-plot-pen "Honest service"
( |0 k- a! _* zend
; E7 [2 C! Y! n* ^1 P! X, Z$ W8 U0 b$ @* o" e! _9 K
[ 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.
, O( f& @; ]" c4 W1 P
+ _- X$ d# j: B( M5 p2 V3 |  u- t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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