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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:, J) Y0 s6 {, w+ v) w1 F
to do-business " [( ]! S3 t9 i6 i( E
rt random 3603 L2 w2 S; m9 x4 e
fd 14 e6 E: ]/ J3 [. A1 L
ifelse(other turtles-here != nobody)[9 G: [) b/ d5 b, ?2 b) n% {
   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 D; ~3 u& m" }: i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! s% l5 l( f* ]
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 \0 W- o3 B  K7 L8 h8 D   set [trade-record-one-len] of self length [trade-record-one] of self) @7 s& ]$ F0 E9 o
   set trade-record-current( list (timer) (random money-upper-limit))9 j& R+ u/ C: p% q9 m! C0 V
" ^) ]' \; d) X* i1 W; J+ E
问题的提示如下:
" j/ W( f$ E) C- G! e0 ~. e: [; h/ z3 @  n: F" M
error while turtle 50 running OF in procedure DO-BUSINESS
$ K$ J# f- H1 p) C4 z" {8 Q  called by procedure GO+ M" k0 y7 y' `. |( c9 O9 [
OF expected input to be a turtle agentset or turtle but got NOBODY instead.# u" S$ K1 G7 J# L4 ~# N
(halted running of go): N5 J. u) {/ \7 h

, S% e8 R/ ]9 s, i' L( E+ e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~~
; J+ |- t1 m1 L3 V: G5 c" f0 Y6 `- o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
, ~' w3 ?3 x& f2 vglobals[
& k$ u. W$ C: t5 a  b, Z8 vxmax; H" t) @2 a0 U" W# P0 C* J
ymax
, ]6 K" s5 s! g* p  {  P/ Gglobal-reputation-list. x% J7 @; V* T

! \7 F/ ^* Y! a$ X7 K; P3 f;;
每一个turtle的全局声誉都存在此LIST
% L! k  d* f8 E- S/ M- y8 lcredibility-list
1 O8 X+ o, A) a9 G  N2 U;;
每一个turtle的评价可信度
7 U- [9 m' [- B6 ?+ Y1 mhonest-service
) c+ x) b$ b" Zunhonest-service
. r6 C$ O6 F* Boscillation
0 F& K9 x% g3 f  X! p( d& Srand-dynamic; D5 }4 q) ~+ {% D, h0 G
]
& O2 F1 {% B! W4 {9 |1 _3 z& \1 _5 n2 m% H3 H0 L9 |1 j
turtles-own[
7 |0 O7 T3 R9 mtrade-record-all
% T2 P  N: T' I% h4 j4 a;;a list of lists,
trade-record-one组成( O6 C/ ^4 M& K" @2 O+ N+ }
trade-record-one
* D' q0 p5 F: k& J" h+ ^' u;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ D) o% m9 a1 A+ }* ~
9 N# Z0 G) @  f8 |
;;[
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]]  r; n% x4 f7 S3 s( k: M
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]
1 ~; m: ^5 V1 o. Tcredibility-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
0 S: C8 z1 D6 i8 z$ rneighbor-total
. S/ j" }* ]+ P( |;;
记录该turtle的邻居节点的数目; u! P; x5 [* t7 K
trade-time! s- v3 r. T' m4 v: S5 i% L+ ]" @
;;
当前发生交易的turtle的交易时间
6 e( g2 q3 z3 T) Q: Bappraise-give& M& S, |. y5 x& Q+ f; B
;;
当前发生交易时给出的评价
8 a& [! Y" _# {appraise-receive5 A; \. M1 g$ Q- ~) M6 A4 u
;;
当前发生交易时收到的评价
3 A1 c* {# d' p& Jappraise-time
4 j7 u: O3 n6 i' y0 N% d;;
当前发生交易时的评价时间$ q: D4 I, W  t, O; ^/ k0 O/ V
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 c8 X7 F& n. q/ L6 N5 u. @' Itrade-times-total  c6 k1 z: h  C0 U" b
;;
与当前turtle的交易总次数
% z) p; i7 ?5 m8 P" R6 \, gtrade-money-total, |( U: M( |5 p
;;
与当前turtle的交易总金额  G6 }- R$ o* {5 _; p
local-reputation
6 }( p4 E" H  U3 E1 ]global-reputation
; X, A, O1 a9 i1 E! O4 scredibility# j4 a  B: C" ~! h
;;
评价可信度,每次交易后都需要更新
% z) p) i1 v% L- bcredibility-all
; L( ^2 [7 ?3 C# k# R5 R2 X/ k; B;;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9 K' Y' o$ U+ p

, U$ O  S( O7 z( T3 C- b;;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 N9 m, G9 ]7 w" A" Z! r
credibility-one/ A) g/ E. e( e1 ], _( 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
! C& \; {* t' q( e. N( mglobal-proportion
& X! r4 O2 e6 `customer; I/ }+ C; [$ o3 G
customer-no$ @) U# g. X) G7 T
trust-ok
# k! z; F2 l/ q9 Btrade-record-one-len;;trade-record-one的长度
0 }" i9 L9 m7 g]+ ^  c5 A3 R+ T( ?* O1 y4 Z
# g( B# f  R+ D7 {3 D+ N2 j3 j* t
;;setup procedure
! ~) i, t/ ]1 o3 L1 I1 ]( m) S+ \7 k
to setup$ N& P" d2 Y6 y5 W# ^1 B) x7 U( A: {% L# R
. x7 J5 a3 T) k$ a. U  B$ ^, J9 v
ca

& D  o0 P2 P2 ]
) ?: J. v) q, y, e# p5 ~9 l" A  Vinitialize-settings
9 @/ k8 u  Z) C7 {( N1 V
4 t( z$ `7 L6 I- X+ r/ ?8 R
crt people [setup-turtles]
& C2 }4 e, \0 e  l4 |, ~
2 O/ L( B- Q0 ?8 o  G; T% k9 A+ Y
reset-timer
5 b- |& J, G6 s4 X  x3 i
( L2 ~2 Z8 J" R8 S0 b& X' B+ N
poll-class
5 _2 p; Q- ^, x% o# q4 V9 I

) X0 D& M% T# r2 f4 vsetup-plots
# ]' U4 p+ k, W* c. O) C! p* V" H: o
% P. o4 ?# R0 W  b0 U! S; ]
do-plots

; v8 \; M4 p# N4 W+ vend
, f% m2 t/ P+ ?6 W( \$ Q( Q  m1 s: w- f' S
to initialize-settings
8 y1 ^4 F* a: C6 C& ^) B4 O0 n
set global-reputation-list []
+ _6 c. Q7 O5 w

3 J  Q5 Z4 H& h, mset credibility-list n-values people [0.5]
4 ^5 z" Y& H" ~: D

1 }: G% W- V' Z. Tset honest-service 0

) O; V- J8 `& |' j; k1 ^
  X1 Z2 w0 E7 o3 c; k- l6 dset unhonest-service 0

5 L2 K) @; u, h$ h* t2 Q% n) X/ S: g) _+ Y$ Q! n$ m
set oscillation 0
- o; }+ z$ C, `' w4 r% C8 ]
/ b, s1 \0 J7 u6 X, h& C& F
set rand-dynamic 0

: Q" M, R7 ?. ?+ Q, b% Xend
1 n; j' d- c! \3 l: E5 x0 M) J
7 {1 q5 p- @- J- \to setup-turtles
$ f- o6 d& H/ c+ xset shape "person") e6 t! P, I! U2 T% u5 b" b
setxy random-xcor random-ycor5 l, d, i( L" N7 T3 S/ \" ]3 ^% l
set trade-record-one []9 o8 B  v/ X5 R; l  w
$ s' [1 Q: q* Z( b8 T  O
set trade-record-all n-values people [(list (? + 1) 0 0)]
( q: l6 x; ~& X( I9 d: m  O" `

/ l! I4 E  `6 C" Z' W! |  y/ [" _, nset trade-record-current []! ]$ l7 H; c3 _5 e9 }
set credibility-receive []) i* N4 N/ D  r
set local-reputation 0.5& W  P8 }5 M* i  y" `/ A# p
set neighbor-total 0
5 Z9 L; V$ l0 ~8 Q6 f# |3 l8 m3 O3 ~5 z1 Zset trade-times-total 0" j- x3 a% r" ^3 F" ~. G( {3 `  f
set trade-money-total 0
$ d$ f2 v: U2 D9 W, Aset customer nobody: O: _; y0 y" Z
set credibility-all n-values people [creat-credibility]
9 k  J( O) R) e* ?6 |3 L& Yset credibility n-values people [-1]
2 y! w) \& z: dget-color
. Q# Y6 H4 y# R& I" g% c; j. H% \! n

6 j# M' Y: d( V2 x8 [end
* b( k9 A  y' ?1 g5 \& r* F
! `  d* |2 A8 v) C* o* q; Wto-report creat-credibility1 g3 Y! G4 p, b' p) y8 D# I) g
report n-values people [0.5]; W2 ?& M! x5 U! C! F4 O
end8 H9 W$ ?; e1 x4 `9 W7 b% Z
( A8 w/ J# ], u3 W; W, a2 i; h- Y
to setup-plots
. C  V1 a, O$ A+ `% @& Q& P9 W" Q5 H: q% k* X  Y
set xmax 30

- U+ j5 Y2 S: d$ }7 k' v! Q  b! e
set ymax 1.0
# }! @- M* k1 z$ i
$ G. ]0 h* B  h- j+ W3 X  @( A
clear-all-plots
  U" {: O4 E. `" `

, m+ v. R, h& D" a; y, a5 T9 D6 Y* U. Dsetup-plot1

4 K" ]2 m  Q$ Y5 _  n3 b1 a" F- o2 P' m  k: E) {3 X* H
setup-plot2
! D" f( I( D+ f! q0 l
0 P% [9 [  p% \( J# A
setup-plot3
% Z0 v1 i9 Y1 `9 E. z" ]5 d* Y
end! @% r: j6 J( j) J
1 ?- u4 _9 S; q# G
;;run time procedures
& k: F* K5 i& t# O0 l5 r
" r* g5 P1 `/ F$ r0 ?to go
- L1 }8 Z* @, ^0 A( Z- F' J; E, Y0 x7 B" b
ask turtles [do-business]

% w! A; b0 @! P& lend! X, ?! F$ e3 z6 r

+ p6 r% }* j$ q: tto do-business ! W* T. D: b7 Z  }6 D: ^" M
; `3 g2 K' O& d9 Y; A% u. c

# ~' d1 X; ^9 t* t( |2 krt random 360

2 o$ K1 p9 a  S, N7 i. h
' t3 L& i' r9 Y: d2 Zfd 1
7 @; x) Z/ m5 u; U
# |$ n* g3 C8 p0 Q, {
ifelse(other turtles-here != nobody)[
) |. x4 ^- F" o( m5 ]8 x/ q
/ ~# d, G, C" a! `
set customer one-of other turtles-here

! Z, t7 U: _7 R
3 _: b4 V0 |- \, D2 u;; set [customer] of customer myself
0 a7 x. D; W8 o

. S7 V. m3 G3 m3 Uset [trade-record-one] of self item (([who] of customer) - 1)( V: [5 R4 ^. e4 [
[trade-record-all]of self
4 |3 m) r" P1 i& N+ R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ |/ l3 u6 ]  f
' W- A7 d) v8 H2 Xset [trade-record-one] of customer item (([who] of self) - 1)
, q& Y5 a& b8 O: t$ a5 I$ U[trade-record-all]of customer
- B( _/ u8 }8 A* H' I
4 w7 X( u0 a7 b; O
set [trade-record-one-len] of self length [trade-record-one] of self

1 ]9 x% g/ u9 U% s: S6 M/ ]/ [+ c; |
! g' I, F# n: `$ g9 H1 V# dset trade-record-current( list (timer) (random money-upper-limit))

5 Y4 i+ y3 q1 N; m! c  p6 P0 k+ h  W5 s- G6 Q  T" \
ask self [do-trust]# S: S2 G; s4 p& n
;;
先求ij的信任度
! {. o8 E* x4 X- o2 M# a4 j3 w
0 _5 ^4 j  u' Vif ([trust-ok] of self)5 w3 f4 r2 f- x* K
;;
根据ij的信任度来决定是否与j进行交易[+ s% s- \6 `6 D% }% R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ u1 C0 Y: a, }" ^
3 h% V6 u+ L0 V
[
5 O2 `2 U. ~4 b+ L. d3 R4 o; `
9 n, P: N: y) e2 I; J9 Y% E: P5 D. O
do-trade

( j7 S% N1 J$ f! B3 g: p1 y. Y, t6 N8 X# ?7 E) a. Y0 x. R& E! w1 d
update-credibility-ijl

; S0 v  v1 l7 w% \( W% @& x5 g' _% ?" T! D
update-credibility-list- V( `+ x% j8 Q
8 {% ~6 v. c4 J% Y+ `5 S3 R
- W+ R  e% U, K, F& b* g8 O3 {
update-global-reputation-list

2 `$ [4 e+ u7 z% K3 Z2 U, L2 e: U' v
poll-class
1 P2 e: z: J9 ]: R

2 p* y5 U  R8 Y2 u3 Pget-color

7 l9 _" R0 ^  x8 f
2 j% s. O, N6 j  x8 K]]
0 P' g% {' |" Y3 e6 p* t# k2 L6 d( f6 f0 G; `
;;
如果所得的信任度满足条件,则进行交易
- X" ?) v& `. w$ q# k
4 D2 t$ v' q! v( O[
. v% k% D( x3 o  w: F3 w& {$ R

( o( ~: y( _4 qrt random 360
4 ?( C+ }0 `9 V  E3 X' r

$ p0 `& {( U! R. Qfd 1
, h) T  m6 x. d! @- w- _% E

( y; m, I, o: T/ `& s6 \* }) L]
2 p) v) r% w8 x4 J
8 G4 p7 P  t6 \
end
* n6 F0 W0 @  q$ ~+ \

, \/ ?8 w& y$ U" u! q2 sto do-trust 4 T  c3 f" L' l! h4 V
set trust-ok False+ y' v  v9 X( a; n% F

. d9 U0 [8 `% S8 O. G6 Y

$ H" P3 f. _2 i+ V" m% }- q6 Olet max-trade-times 0
1 C2 d2 A7 U! N6 S1 R6 p5 d& Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ ?# m$ `0 b, ]$ S8 f- nlet max-trade-money 00 C# a- S* R0 M& y  z' Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# x$ k' ?4 i0 t" i8 E; J* f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# {, Q6 v8 x+ |8 V) D% i3 O! e+ u/ N! o% o, ^0 [4 Z; H6 T( t9 _
0 A- [- V# b* P1 A0 L  U: x
get-global-proportion
: l+ n7 w5 r# i8 }* \& |8 Ylet trust-value
7 w9 M7 x) m8 D% clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 S, f, S  `8 o5 {( F, l1 `if(trust-value > trade-trust-value)# ]  R3 a" B: k: X$ O8 o
[set trust-ok true]
) F, s2 X( y6 `( P: J* k. [end5 L$ k( m" ~1 W* R" ?6 w+ T

. ]' T: V8 g; yto get-global-proportion
) C0 K+ x9 e  {: \4 Y) zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# S' @" a: L( c# T" I$ W# [[set global-proportion 0]% t. t$ c* e# B( Z
[let i 03 f2 i0 X# v6 n" w4 ^
let sum-money 0
6 v& ?0 E0 K: ?6 c% g6 }while[ i < people]
+ Q, U2 K0 H" ^1 p[6 l+ R: r9 b6 i9 G
if( length (item i
/ p+ ?: `7 |& L; t7 C$ K[trade-record-all] of customer) > 3 )

3 O% l6 y( v. b[, {, s% _' Q$ M5 r1 d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 D5 k: ~  u! B) a- \8 |]8 g% g* ^9 b: Z4 I( d6 t) `. K0 L
]8 s# I; ]( _) U
let j 0
# [2 @4 q0 B; u1 ^8 M) Wlet note 0" b( g( M2 k  {/ y( M; s
while[ j < people]
) Y; |1 Q- p! J3 N6 ?2 `" C[
* N7 y% B4 @* o) ?if( length (item i+ ]3 p. y9 w/ q+ W1 l2 k
[trade-record-all] of customer) > 3 )

- \7 U8 e" U0 T0 Q& R0 L! [6 V7 u[
& E0 O( S2 L% i7 Cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" p1 G* M( ~% _5 _/ h7 ^
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ U8 m4 x) v9 K7 C9 E, d. S8 b6 R! {
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ ?, |. T2 n8 K, }' ^# o, }]
7 |* Y. G8 }  ~7 `( H]
; X* `( w% w( n! lset global-proportion note
' }7 H8 H, z) x1 ^! \- P( g& g]: H& ?( x& T6 N# X* x! a
end) T7 }7 T7 n; x  u# h

+ n# s3 G+ ~& W: {! O8 }# i2 u. h$ m9 Vto do-trade- e- [, h6 i+ d8 f
;;
这个过程实际上是给双方作出评价的过程
8 e& P8 ]0 |! ]: K0 {& zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 v" d" M+ f% g$ w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- j. F: J0 a8 @1 a* y
set trade-record-current lput(timer) trade-record-current
, V- ^/ v$ o' A* b;;
评价时间
5 h3 Y0 A+ `9 A' Q# {ask myself [
! |1 D5 W2 `5 o6 R+ t  Bupdate-local-reputation& p: {) q! C4 c$ h- [$ t
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 K0 \) j+ ]/ R$ A4 c& l]
$ J9 o/ d  y! H9 mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  m! J' P/ ?2 u2 b4 f+ g! T# z;;
将此次交易的记录加入到trade-record-one  J% J: B; ]! @% [& \! u
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). d( M" @9 \8 L" F/ T+ A
let note (item 2 trade-record-current )
  c) Q+ `. b$ k- h: ^) `/ Y$ |set trade-record-current8 [" ]0 I% T0 R% r# \' x- r: D5 Z
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 p* j; n9 `4 D4 N2 uset trade-record-current, w+ V/ o+ ^2 O5 U
(replace-item 3 trade-record-current note)
! _6 ]2 ~$ K1 D6 z& Y" R9 S) z) N* H' v" a) C$ V( n

0 i7 j* E9 d2 |/ e5 jask customer [' G% w" t3 z5 E4 M! o+ H
update-local-reputation, o0 r" d" w/ T, V9 P* f) i4 C! z
set trade-record-current
3 ~3 N+ z* e0 `(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 J! o" H6 s$ V4 p7 {
]
, {! y, T5 n, P7 V7 T0 E! e
* I7 u0 j! x3 O5 B8 d3 ]) b. @" s" C
4 t# s9 O1 d/ y+ J) R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& ~0 ]; u3 s( K- Y

2 }! a; J7 i4 ?8 N% r8 S9 jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); H, o+ {* L) ~7 R
;;
将此次交易的记录加入到customertrade-record-all
7 e3 v9 d9 n* u' l1 k5 }9 {/ `end! b  @  L- M6 V3 M, m
/ D8 d: N1 a8 A. d7 M  k1 v
to update-local-reputation
1 |: l1 Q7 n6 {" Gset [trade-record-one-len] of myself length [trade-record-one] of myself, j7 u8 p. N" c3 s

& V; F' k* p& l% C) e
/ n9 r, y& U7 w+ Z6 Z;;if [trade-record-one-len] of myself > 3
2 C* ~5 p8 x# i6 }* z
update-neighbor-total& J9 C$ @. B5 {" r2 w
;;
更新邻居节点的数目,在此进行! M- P  t+ _. ^; C
let i 3
. Q; W3 F4 [8 mlet sum-time 0( Z* J- C& C2 g! T% ~! @' }
while[i < [trade-record-one-len] of myself]2 k4 f  n8 d! U# H+ T% \
[6 T- Q( c* ?/ ~, i2 d% y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) O% i" Z3 x6 s; Z2 O
set i
7 j9 x, c1 s. \7 r1 q: P( i + 1)
9 J. t' F- n$ Q
]
0 w. l! }/ S+ @0 n9 ~' x1 @let j 3
* |9 s+ ~# M+ K1 wlet sum-money 0
" f9 T8 m( `1 r0 S+ D- L  f8 Ewhile[j < [trade-record-one-len] of myself]
1 x! e3 ]1 v4 R6 g" H2 d' k[; h' Y" U0 B6 L
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)' ]* S  A" q/ u
set j
* s. v  r4 q  }4 c8 }( j + 1)

3 p" }% m! u8 ^* c, z1 h6 n/ \]
! i( b0 O! ^- O( d! o4 _& hlet k 3
! ?& z  F, ~& c1 l/ P4 jlet power 0$ r' \: X) `2 ^% s, Z
let local 00 t+ F) l3 U3 z6 Y: U3 y$ ~" t
while [k <[trade-record-one-len] of myself]- k' p- C3 f2 S& x
[
* |% o4 n$ Z9 v; z$ v) G+ zset 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)
5 {# s( p+ ?7 _4 F6 A: x6 v; Nset k (k + 1)
; ~( Z- a# k0 C6 W]
: _3 O$ [, ], E2 x0 |7 }$ G2 e5 Mset [local-reputation] of myself (local)! y) z. s# F6 b/ l' c# r: q. D
end
7 K  z: T8 q% c) a9 r/ i
& N. t8 j6 _- e* U! Eto update-neighbor-total% l* @  x; ^# x4 a; j0 |1 g9 u9 o
) M' b+ Z- i+ h4 a' C# `+ s
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, ^/ V! u. U, c* R$ E5 ~; H& b( R: x" i, F
  j8 o2 A4 S2 R6 G1 ^* R
end* Z  _% ?0 ]- p; d

. d( C: s% ^; m, N# a+ ?4 Y, dto update-credibility-ijl   ]+ x& n9 E( g  b# \  d

# x# \6 g9 C  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。
+ U# w+ P( J6 q7 clet l 0
2 i0 l& ^' k$ I- h' p+ I4 Pwhile[ l < people ]
, e  k4 Y1 a) I8 v;;
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- x8 V. L$ S# e% C% z/ Z( r4 G
[* f) R% a' }' [  P# p1 X( O/ B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): H. M  Q7 C! B
if (trade-record-one-j-l-len > 3)* }! y& e7 U8 f; A' r: N
[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
: ~; o% `) `' u# |let i 37 l) u# n' w2 u& r7 P/ \3 o7 W
let sum-time 0& z! y8 k- I" J
while[i < trade-record-one-len]6 d+ ], [( \  M
[  G8 R. B# M. ~, n# E& U3 F& m5 e
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& Z" Z& e4 [( m8 {0 c) a6 G
set i. g# l* f/ M$ g! j
( i + 1)

2 J8 Q6 h7 r! ]" v; Q]: ?3 Y3 T/ U8 J+ d6 ?! u
let credibility-i-j-l 0
, d* J/ X8 p$ K7 };;i
评价(jjl的评价)) z. g! X5 U( A5 O( z0 y
let j 3
* K. F6 F2 v8 x4 Z0 X' {7 R+ Xlet k 4
; d3 n5 k/ r9 \0 y+ twhile[j < trade-record-one-len]
  e3 b/ _$ n/ I6 V0 R/ y[8 H, S3 p8 A4 k: e5 S. m
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
7 o; n, W8 g# x% m4 gset 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)
. n, j& M3 y$ S6 X" ?- o7 t. X6 wset j8 ]$ A- `# _5 I0 W2 l* r# U1 ?6 U
( j + 1)
1 \4 E: n1 r6 x" p
]
& Q) M, [: |% F, g7 S5 r( Lset [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 )): P( A# x8 K3 _2 H3 S& ^: k+ Q1 B9 w

6 A. ^/ C* p# L- i1 R6 d6 Q
2 _, _* j7 Y5 D, p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 j3 ^' x  r  ?/ ~1 t' X;;
及时更新il的评价质量的评价0 _: J5 y" e$ v4 c. f6 X9 r; z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& X* c; q7 E7 F6 c, ^# i# E; h* s
set l (l + 1)
0 J" a& E/ o( k) i7 M' {]# Y: p' e8 i; G0 J4 W& R
end
" b' u: Q& U" d* C- m# H
% \; u" h" S- L0 v* \4 `' pto update-credibility-list
3 i' Y0 }  U+ O; g+ q( M6 Clet i 0: _0 n& `* a( @0 y' R9 i0 o
while[i < people]
& y  R' g2 M' A  s4 m[% Q0 P6 ?# y( n( f" w5 T9 v
let j 0
4 l/ \! @1 v8 X$ f; J; f/ nlet note 06 L, a; d8 z8 p
let k 0
7 a& c/ {/ Q& R$ w: x;;
计作出过评价的邻居节点的数目
; ?7 x" R' @4 W6 Swhile[j < people]1 {+ T' P/ X) {2 ?' J/ A+ l
[
6 x" |; a# g- b1 N5 j, Xif (item j( [credibility] of turtle (i + 1)) != -1)& Z4 x9 V5 y% K3 Z( P* q
;;
判断是否给本turtle的评价质量做出过评价的节点
5 S2 A+ g6 C9 e[set note (note + item j ([credibility]of turtle (i + 1)))
' @' g( c3 Y: i3 ^) F0 t;;*(exp (-(people - 2)))/(people - 2))]
6 _: D4 z4 B9 I, T' ?
set k (k + 1)) I8 Q. f7 b3 \% b
]
2 k7 b1 t+ v. t3 o3 r& Lset j (j + 1)3 O; ~7 F0 Y, L8 T- a9 Q
]
) Y# j5 S# \. W" t* Aset note (note *(exp (- (1 / k)))/ k)2 J* z/ m3 V1 C; `; b
set credibility-list (replace-item i credibility-list note)
, O1 }; B0 ~- B' C& |set i (i + 1)3 p( {- [( d6 d8 B
]' y4 V2 u( V& o- \; i9 ^
end0 i, \% g7 s+ Z, D. h
( n! G8 p0 S  Y( O) E
to update-global-reputation-list
* I- Q9 a9 _; `$ K4 |let j 0$ k% K7 w0 j" M* ]# P9 Q
while[j < people]7 b% A2 q9 N+ P
[$ Y) ~6 v' t% B9 r/ s, H+ g
let new 0
6 N+ H# O6 y: \- N2 o3 F6 V;;
暂存新的一个全局声誉
7 ^) c: N; c* {let i 01 I$ A3 ?! R- J3 _
let sum-money 05 a. D" T9 M% O; ^7 N' A, p4 ~# w
let credibility-money 0
+ e' `% b2 V5 @( |( S8 S. xwhile [i < people]9 p$ H. ]1 S7 T& ^! @# Q
[
; V0 d' _; B: ~9 cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 _/ M0 h% f7 I$ s9 I3 T2 O7 yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% _$ {+ g* g* B& j5 Qset i (i + 1)' P3 N' c0 X! n( x
]) H( I5 z4 z4 x
let k 0! m6 ?% t6 {8 g1 H2 a  y
let new1 06 }; s' t: \  M9 h  o5 t* r7 T
while [k < people]
/ Y( Q" ^" q; f4 X- `[5 r! h) o) z0 V6 L
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)
+ U4 I0 l2 o8 l( f3 L8 v+ v; wset k (k + 1)
" q! R9 x1 \- ^- |! E]0 A7 @( W  m+ H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 t& Z  `  z+ y. e+ K8 u6 K
set global-reputation-list (replace-item j global-reputation-list new)/ O2 d6 C" j' w* h9 i
set j (j + 1)
: C1 u) F  c& y2 c]: y; n- ]) D8 G3 ]
end
4 w  w! m, h# D9 ?* ^+ ]
+ K, [0 F$ n& V
) ^! f. v: t, n1 w
+ t. q' B# l8 |  vto get-color) C: v# ^6 A6 w/ o* q  _0 m2 b7 Y/ j
) ]1 i3 W/ E2 b' g/ d* ~
set color blue

* Q5 {  B* h, e8 v7 Y" S5 eend
8 h% b0 I9 P1 i6 W' B$ `# y5 X; y2 t1 `4 m: B9 w% {5 b
to poll-class
! P* Q6 ?, H9 s. [3 |4 Nend' Z" i# Y( W: Q% Y( S5 `( H" _
  I% a7 Z" L3 Q) e2 V' w( {  y
to setup-plot1
- w5 w; o3 c. n" c& h
3 F+ C" V0 [0 m9 H9 e" ^! @set-current-plot "Trends-of-Local-reputation"
$ Y+ g9 u+ }; m

0 r( `3 I9 f; W4 @  y* gset-plot-x-range 0 xmax

: o! a% I# k9 s/ c% _$ T  F, O' W* R7 x$ b0 k
set-plot-y-range 0.0 ymax
% b0 M$ V: Y, R- S4 q' q6 M
end! Y2 y- W$ t$ B+ n# {: S& Q# x
4 [* s, g( i+ S
to setup-plot2
3 {' t2 A1 Z: ~" |
' L# ?+ ]8 n% [4 Y( Vset-current-plot "Trends-of-global-reputation"

, }7 ?* s6 z, {& T" Z
2 R3 w1 L- m$ E: f; @set-plot-x-range 0 xmax
8 F4 u6 X- c9 l0 |+ M, ~. n) P* q% y
4 Q$ Q& B' L+ V; a
set-plot-y-range 0.0 ymax

5 w# C2 R& n4 K$ f4 o3 e5 ]end. T9 h% d8 v1 T, ^3 E

7 x% r6 u: f7 }& i3 {to setup-plot3
# L' B+ V" ~5 Y, d+ g2 D2 D  B: V* H, r5 G  q* F+ k) W
set-current-plot "Trends-of-credibility"

+ B  z( _- v' o7 i5 G$ X
4 @5 `1 K9 U& p1 y2 t& [, ~set-plot-x-range 0 xmax
6 o! d* |& B( `' W& S% D

& N) w5 H: D8 o: Z3 B* S( ~set-plot-y-range 0.0 ymax

8 g4 h( g7 @( Zend
& I( I* `: I) M  c: P  W3 m6 t6 \6 |9 R% m/ e2 C
to do-plots- i6 B) e2 H' B# Q# `
set-current-plot "Trends-of-Local-reputation"
/ v  z  ^, m2 D. R3 lset-current-plot-pen "Honest service"
* l, o6 r* Q5 s) Hend$ L: I& ?- h9 a7 _* q5 n3 I0 @" J
1 S' M" R9 J% D. T9 E- V
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
8 ~# N# _# f* m9 ^
) f' {7 \) y+ n( A+ _4 I# m' n" G  K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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