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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:9 S! ~- s  v: |* }
to do-business " B. S1 Y$ H. T- Q- \9 x
rt random 360# u  [- p; r" L! D- ]* i8 G
fd 15 y" X3 o' M- F. N  d! i' A: v
ifelse(other turtles-here != nobody)[1 \6 s  J8 w; E( n, ^8 X
   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.
& p& C( U) ]) U- k1 ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      {/ \' ^6 h5 d
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" [  {9 i2 P. I# H, a9 {% j   set [trade-record-one-len] of self length [trade-record-one] of self
* P& f0 n! V) g6 U! z) v   set trade-record-current( list (timer) (random money-upper-limit))& e  [3 O; C7 S( f$ C* @, d' j
- }0 i! b& H% R1 A- u/ S2 x6 n" w
问题的提示如下:8 y$ |3 x" j" D) l! {

5 Y2 _  \- U9 [) perror while turtle 50 running OF in procedure DO-BUSINESS- m* A4 s0 M2 s# \3 N7 R
  called by procedure GO1 w1 y1 Q. t$ o, J/ D8 k9 d
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* B3 P+ Y0 l  \, \
(halted running of go)4 d$ Z5 i# O6 `; u

. p2 n/ n' ]: b- g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~~& s0 l, d0 ]+ \: B
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/ N+ N0 D2 O2 J
globals[
2 o' l, X8 h5 i2 Q% d7 txmax
: }4 {& n- @0 A& I6 o& g' Aymax
+ A1 V* Y5 B) Y& Kglobal-reputation-list
; W3 K6 S2 r" m9 X1 V, _; K( g! A+ y. G$ a( Z) K
;;
每一个turtle的全局声誉都存在此LIST
. T) H6 i' X( r1 dcredibility-list. x3 j1 e; Q1 {. l+ O, B
;;
每一个turtle的评价可信度
" p7 d, d, ^% ]( `honest-service
; R5 v/ P% D7 _0 A9 Eunhonest-service
9 o: S" p& A9 y% m1 qoscillation% C( T( p) `! Z6 a# |* p  K
rand-dynamic: K/ x" F% e! V9 w" n% ^
]. k- d- c% F* I7 U# b

. @' z  t' T! e$ Z3 N5 f$ n3 f7 i" Dturtles-own[
! z% G' _- `& Z9 U3 K( T1 i. ~8 Utrade-record-all4 S* G2 D2 R( i1 ]# i, p/ ^- ^8 k
;;a list of lists,
trade-record-one组成* s6 v* a! r/ _, `$ r
trade-record-one
# u  d+ ?  h7 r# F& w+ p;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. _& e% I7 |; }; s$ U
5 k2 o9 N6 f! y; `1 l;;[
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]]
6 O6 ]) I. b1 v2 Y" itrade-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]. _" c/ @- @' a; {1 @/ J. c+ i1 L5 P
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
/ ?1 v2 J* \: a' q& L8 L$ fneighbor-total5 |' H' w: t6 R6 u. H  W
;;
记录该turtle的邻居节点的数目
% ~7 J3 a6 M, T) d( ktrade-time2 \+ [; a' f. N# @# G
;;
当前发生交易的turtle的交易时间' n; F. [1 G) X* J+ m4 w' \
appraise-give, ?; n) O* z5 L0 O4 P/ H9 N
;;
当前发生交易时给出的评价+ t' X; u4 D7 j) E% Q0 ~
appraise-receive, z% ?  o" O3 a; f
;;
当前发生交易时收到的评价
. c* r7 |' p3 l. j5 Y( t+ W, dappraise-time8 p" A4 E. z7 l, S; Z; t4 _
;;
当前发生交易时的评价时间
/ e5 Y3 c, v4 {; zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉: W2 D, `( w" p0 h) C
trade-times-total# U6 q! u) o7 X1 U: t( O( M4 j& {4 @
;;
与当前turtle的交易总次数
/ @7 q0 e% X4 wtrade-money-total
5 z0 Y- s6 F+ n& ]1 v6 L5 E;;
与当前turtle的交易总金额* x) M) K7 Y& ^" @* f* g3 |- c5 {
local-reputation
' _; \( J# S) G+ T8 oglobal-reputation* V- {; N. T2 W3 g
credibility
( `# l' x% u; I7 K* G;;
评价可信度,每次交易后都需要更新
* f  N2 w5 b* h! s8 z5 A$ X! x- Scredibility-all; d- j" F& T! 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
) \, v. K6 V# W9 \1 j8 P  @% Y# P
) M; C2 K) H. T8 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
3 ~' q' Z: `8 {3 {% V& ?credibility-one- k; I" y- @" C6 ?4 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people5 w7 Z/ m/ u" D
global-proportion
0 p. \5 X% [2 o. E" Rcustomer) b) V! [+ ~$ n. J' M3 H0 s8 i# U% u* W
customer-no/ Y0 `" c" q, R# Y
trust-ok6 B4 L! ^0 \9 I$ f
trade-record-one-len;;trade-record-one的长度
. a* W$ K2 e. Q$ S]- E0 d6 k& b- N' y9 ^3 T
5 H8 Z6 N, X, m2 h+ d
;;setup procedure2 l* h( ], n. M+ X

3 S# o$ j& t  X% gto setup  r5 K. S9 b3 g$ f, T* V
% g+ s: J: M7 m1 s. ]
ca
9 \! \) e( J- K" t

1 m2 x0 k3 s6 V* m* ^4 q7 I$ X, tinitialize-settings

9 V7 W6 m0 {3 D2 Z$ Q( V$ n& L
, A5 {4 Z8 v' m7 @; ncrt people [setup-turtles]

' q. k/ O. D  u" O8 s% T5 P4 G
. x, m2 B/ Y0 n" I$ t8 v& w2 z! k% Yreset-timer
4 d' _) w  r; o6 H1 W( _
* ~4 a, f7 A4 A% C
poll-class

7 @  ~" N6 s: G: N6 v# ]( ^, C3 a* \; m7 X% w
setup-plots

1 j) X5 r! n8 \2 K$ x5 U3 G% X- ~! L; x& m  s, ]
do-plots

8 F( w+ h' m" u9 x+ F. Bend
/ Q4 ]5 ^3 O) \9 e" V0 W  `# g8 m
to initialize-settings' e* O5 c/ z% I: A1 O. g
, [7 c" {8 L" p! A# r
set global-reputation-list []
2 b3 T5 u% Q) C# L+ ?$ g2 k& [8 @
1 {  v9 W" T: y5 C
set credibility-list n-values people [0.5]
4 ~- h/ P% ~! u* G' Q) Q8 I7 g
) o/ a% }4 E. U1 _+ }  E
set honest-service 0
: H" n8 o) {  D( Q' G6 h$ y+ H

6 u. ^* o5 d4 g) H+ W9 }) n% V4 zset unhonest-service 0

7 H$ O0 n- ?, u& ^  c1 O5 k& }+ C  I, b* w# `% E" B6 _  ]) N
set oscillation 0
; S4 B4 e! b# o3 w% d
- T; g) |$ s- t9 U- R
set rand-dynamic 0
# w6 O' i4 n$ v( m9 ?$ t( X# ~
end
5 ]9 T& ~" T5 @  j
; n& r% X  m, |9 Y6 ato setup-turtles ) H/ ]4 j1 F8 V! y/ W! Q
set shape "person"! T; ~! O) R9 N2 }8 E( i: V
setxy random-xcor random-ycor4 ^) n/ _! {6 V
set trade-record-one []
/ c$ }1 |3 W9 ]7 t+ x- `  Q- q

, ]# Z' y1 p, ~  }set trade-record-all n-values people [(list (? + 1) 0 0)]
( [4 a0 B! p( E* h2 o5 ^
- T+ u$ c. k  [  h1 m& C
set trade-record-current []
; g& o4 ]; ^: D2 C$ E2 Dset credibility-receive []5 w  `1 l" \: a& V
set local-reputation 0.5! k  H( l8 h$ Y$ W$ l  B
set neighbor-total 0/ P/ r& q% O) o. y$ b6 E
set trade-times-total 0
! z4 m3 x# D) j* Q% Tset trade-money-total 01 w4 x) a, N; i' {
set customer nobody
7 v$ K3 i8 z7 d! t7 xset credibility-all n-values people [creat-credibility]
+ M! Z9 E3 Q; Nset credibility n-values people [-1]
0 H0 T6 D) U) v, q! x& D+ nget-color+ [/ i+ F8 C4 ~5 X  M$ }
- R7 N* u* {& W9 k6 O9 w
end3 k( x1 d/ v/ i8 A' @7 g

4 ?9 ?6 A/ X  F. s+ q3 _7 w2 Ito-report creat-credibility( Q9 V0 O6 s' C* D
report n-values people [0.5]' X9 |. k" g8 j( ]: ]" H
end  q7 [! h$ t$ u6 \  f5 ~
, c5 d9 ]8 l. f# U- F0 }
to setup-plots! f( \$ v, O* P

* O1 |9 V! C! |$ r9 pset xmax 30
. [; P9 s3 u' \

/ F+ V% O( f6 j# V  s8 wset ymax 1.0

3 ~* r% y7 Z" r& m9 u* h/ \3 T
( M$ {+ q" l# E* m+ o+ mclear-all-plots
3 `# F9 @; l5 s+ e3 ?

( X/ O9 ^- d! @$ q( o+ gsetup-plot1
+ q9 I- U! T* F1 i* K

3 N, U+ k  ^6 q/ W/ Q5 usetup-plot2

* M9 S8 K! Q% X7 M+ j
4 C/ N3 Q6 F$ l7 L2 F" y! |setup-plot3

4 j3 `9 Q  g8 _! A' l+ Z% Hend; ^1 q* W( R1 D

* C: O+ F( p% b! P;;run time procedures( L" F; \  y7 U3 w
: _3 r. n% A5 U+ ]( S' U3 i* ]' a/ |
to go
8 l; r* x, h, z3 V3 g5 f5 _8 Q, f2 @( c7 w1 F: o3 x
ask turtles [do-business]

8 Q+ w! n4 Z1 Qend. R2 k0 a$ Q  L% L2 N

) X. p6 Z) K  G, sto do-business 2 `. ]6 p  @& F9 C& ~/ w9 j
! ?, P' \4 k7 k* t% ^5 p
! l5 L4 m2 x+ Y
rt random 360

" q0 H, P' F) n7 w$ G8 J/ M: z9 c. |, l! _
fd 1

% ?$ d0 [9 B  c8 l4 e0 j! v& R
$ e( Y2 F) \: [ifelse(other turtles-here != nobody)[
2 |' k" H  V% _5 Z, _: x0 J6 W

* T7 b4 Y7 k. U* Wset customer one-of other turtles-here
- @% n: O/ x+ q5 |6 H6 ^

6 @- B2 x7 }4 h; C. y) N, r;; set [customer] of customer myself
3 i5 r. o5 x* v2 p' ~, t

% ]  q9 k6 L( n1 qset [trade-record-one] of self item (([who] of customer) - 1)
) f' ]$ d7 D) S. L( _( _[trade-record-all]of self5 b3 j; x/ E& j/ ~- C
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! W% R' P* O. u' a& y

2 Y5 N, w# Y5 eset [trade-record-one] of customer item (([who] of self) - 1)) a2 T9 K" w0 h2 m& ~/ V
[trade-record-all]of customer

/ N  a& u/ u/ h4 X9 H: B0 ]) Q& \% A/ y7 L  N% K2 N: w2 ^1 ]6 e) V+ C3 U
set [trade-record-one-len] of self length [trade-record-one] of self

; ~/ b, b) o) }% ~* t5 v4 G* h) Y$ W) z( m6 y
set trade-record-current( list (timer) (random money-upper-limit))

7 b. x( Q% ]# \2 s3 @
6 p- N; j% ^+ f; O- z7 H3 @7 _ask self [do-trust]" R4 G# ^  [5 t" r" d
;;
先求ij的信任度
2 w7 s. B9 b& j, R; n3 g- `, O* n4 k: r- d) W
if ([trust-ok] of self)/ ]; ~. A- |1 }: @# k- z* G
;;
根据ij的信任度来决定是否与j进行交易[% Y& F' K6 w1 n) b/ f- Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- J. H8 I" K4 a1 X4 R% V, F* n
. c, \) F0 H6 T' M3 E[
: y4 a% O0 r3 ^6 P0 V6 W7 e* |
1 j# G3 \! E" E* f9 F, _
do-trade

: p: J5 l; p  A( A' A2 u- s2 |  q) m0 e+ E, W
update-credibility-ijl

. x0 [6 }: v; ^  F+ }% k8 M% M1 ]7 {
update-credibility-list" v$ B- ?0 O2 j1 B! c. n5 l

3 A- k& \/ [: s  c- |! k4 D# M* x% }% z! ?3 f$ t1 z
update-global-reputation-list
+ c' D- r* P; N

0 N  v" i. E5 h4 r. l8 C" `" Opoll-class

# m/ M5 y2 W  |1 ]$ X! ?
" e7 P6 m' A2 A$ R0 f# Uget-color

  h6 O* C( y. I$ u2 i3 Q; [( t: c' C  ?# h
]]
1 i* [$ D# B+ j: z$ J1 U: n
& f3 c$ T( E: [3 p) p;;
如果所得的信任度满足条件,则进行交易0 J( V1 {$ {9 q6 [
, ?* m# c" t; t% A* k$ L) n
[
6 E7 e- B1 D3 ^2 B7 E7 K
2 l# s6 y; m: G6 u
rt random 360

+ @! Y. f4 L* d0 y) m5 [7 d1 y' F7 D: h+ \
fd 1

; b+ _9 s  N( e6 y+ q* p  B$ [  z- C" G# t% X& n0 Z4 h4 B8 q
]
0 u, z! |( ^/ _% r

- }# B* T4 |2 s* q0 \( ?end

) O# r3 v. X: y" O
& n7 c8 t7 T. O! h2 W0 \& w- s- Nto do-trust
' P/ y* V- q5 ?! P* ~( Vset trust-ok False4 L* B# y) x( S

! v; @! i0 D7 R) |( _1 L. c8 }# P' V
0 ]8 R6 c" b  k# J8 v/ q2 c
let max-trade-times 0' E5 E+ C* Y1 ^" ~: N0 N9 Z. l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" o5 k% ~6 @) k! B1 x/ klet max-trade-money 0: B$ i4 w: X) B: Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( f3 Z0 Q9 X: i" K+ w
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 e% R) i* A% T$ d  j& z
2 a/ P8 [- \+ G( q% d9 ^6 r
3 p- D0 X* v* Z) o
get-global-proportion
: S0 a9 m8 E2 W/ Slet trust-value
) F* v3 h( z  P7 V/ flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
4 C7 R) f  s, l) }: G& o
if(trust-value > trade-trust-value)2 H" r. Y' s6 j" i  Y6 C
[set trust-ok true]
* L) m4 ^" i) k3 _( cend
" }1 Z4 k, j6 I) I6 \
! ~/ b+ q3 c7 ?+ l4 Ato get-global-proportion- S- Q: b) V+ L9 [4 s  Z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 ~* C& n! _0 S1 E- N[set global-proportion 0]  A& w/ n- z, o& q
[let i 08 U. I+ y* R/ ^0 ^
let sum-money 05 B, K' o& p: n
while[ i < people]
5 j* ^0 x; s+ I[* L# j  ]/ c3 i, N0 R+ V
if( length (item i6 `" {0 ~  \6 F( W
[trade-record-all] of customer) > 3 )

; u/ V" i1 n- q( t; s[" q) H" z( B0 j) s2 J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ A! f  `: l) d
]
* X) R. k1 B. x1 X* d$ a]
6 j" J& `- O* M+ w% Z) ulet j 05 T5 [9 ]+ ]% S* f
let note 0% ^: e( x7 J3 L7 E( |- h5 S0 h# n7 Q
while[ j < people]
* \2 S9 w& c  P, b- _7 ]- K6 b[  u9 _# _1 d% l2 R2 a$ `4 @
if( length (item i
0 v  J7 f  `, |* |5 i[trade-record-all] of customer) > 3 )

; M8 k7 g) g: v[
( w. @6 S! n+ v3 [( t! F1 uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 w; Z$ n3 h* }8 A" d% |" w. a4 Z1 x[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, b# B4 h( j. R6 `5 u" @  Y% x[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 E" W) Z2 ~' I; }7 u
]. W8 B  |# d. `  W1 F
]( t, o. Z/ T; k' f* W
set global-proportion note0 s6 m. w0 H2 f3 ]# S9 V* S
]3 s7 x2 [" e  I- \
end' G0 M; ~( j) v& u7 U! a

6 N5 ^: A5 s4 E9 G' k: ?7 j* x1 mto do-trade
! F- l% M4 s# u- Y2 G( p6 e;;
这个过程实际上是给双方作出评价的过程. r) ]( d, ?) z, @$ V7 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: t$ v& Y6 s# v6 x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; ]2 S" e" d+ k" ]3 dset trade-record-current lput(timer) trade-record-current0 J& C4 i! s1 U& Q) X! F; L
;;
评价时间
5 F, }" o3 S# b" n4 I; ^ask myself [- c+ C  p. L3 k7 O/ G" ~
update-local-reputation$ K- W2 c0 O, v
set trade-record-current lput([local-reputation] of myself) trade-record-current4 M  m  L* l% y4 J9 q5 J0 P
]7 P- u, Z7 W5 _+ a2 Z. r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ I7 t5 u5 `( w;;
将此次交易的记录加入到trade-record-one
# p" R* S, r; n/ H% }1 Yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' B' ~9 J* ?& \- ]6 nlet note (item 2 trade-record-current )2 M; F6 ?$ V2 \' |7 ]
set trade-record-current
4 N* Y7 x" q8 @' T. o! f(replace-item 2 trade-record-current (item 3 trade-record-current))

3 t9 c! P* S2 ~' vset trade-record-current8 V4 ^1 Q; i# O! G! \
(replace-item 3 trade-record-current note)+ G8 m6 h% s/ n4 C' e0 Y4 ?  T5 ^( s
1 j. o$ d% E) Z& e; P

$ e2 q# ?5 @+ f( l$ x" ?; xask customer [
3 D! J6 l+ i$ @+ ]update-local-reputation" q1 o! \3 ^! X( a
set trade-record-current. ]5 F. O$ ?" I3 k! n
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( t! V# D3 v. l4 T
]% a+ X6 D# d2 u' [
9 K7 W+ l2 ^- Q3 ~' J' s' }1 h" }
1 J9 X2 H  w* s' n6 D; n
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- s3 c) \# O/ ^) F& I
+ ?2 I# {4 o* d; U# ?% P% W" j! H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 w  }0 D2 x! ?" e- v( y% V;;
将此次交易的记录加入到customertrade-record-all
) X7 I. k) n! G, N8 L, Y( [8 k- V6 m5 iend- {0 a/ Z2 e. `6 t* J# D

0 R. F+ }) q9 L# u" f7 ~1 U3 g1 ~8 c5 ?to update-local-reputation
" U  p7 J8 |9 j9 g0 Z) e, Bset [trade-record-one-len] of myself length [trade-record-one] of myself2 K) A! ?+ o* W& Y( `! _7 c

  |; ~0 l1 ?0 |5 y( E! v5 u8 q2 ~- [
;;if [trade-record-one-len] of myself > 3
& t  F  L/ ?5 s# d, W$ l
update-neighbor-total
7 [) d5 Q) k9 e, h( o# I;;
更新邻居节点的数目,在此进行
1 A+ Q8 \. X! s' |" R7 ?6 ?) o0 Elet i 3  ~( L" v8 o5 W! v
let sum-time 0! J. {, B5 J) @1 X! j# x' h7 }; p, {
while[i < [trade-record-one-len] of myself]
9 H3 z6 C1 Y& J4 V[
+ f7 r! d+ ~1 k; N2 fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 s" z5 O5 `* T; X2 g* P
set i
: z9 W2 Y0 Q7 p( i + 1)
) c& o, B/ j4 p4 D; U
]
- T3 E2 s- n% Y5 o( L1 ]let j 34 m3 I) _" H& w7 y1 ~% {
let sum-money 05 s' H; w; J5 u4 t
while[j < [trade-record-one-len] of myself]
; N/ t, m0 [; c/ P$ U, ~1 B[
! n( ^% J+ Q+ [7 m2 p+ O7 \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)
5 x: j( ^7 n! N2 {6 w3 n8 Z! s+ Uset j
4 p2 M' ^& l9 c( j + 1)

; t( k7 M5 K! |0 [6 D& K]
( |: [8 U0 g0 d8 O1 alet k 3
* j8 e  x0 ~" J6 N; e8 ~' Flet power 06 \) G6 \+ I, R: I- w
let local 00 I& s, A; \% E) {$ B2 ~& T
while [k <[trade-record-one-len] of myself]
# V% {) \9 Z( W" B. `: N[
( @& {& s' |# |- F) ~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)
- U+ t7 X/ q: y: Sset k (k + 1)5 s+ U/ p# O) X% z+ h: r) X
]
1 u% F9 @4 _; s) Tset [local-reputation] of myself (local)
1 ~9 ?* |! z' j$ Jend
/ U; J& z' L2 Y& T! a1 I- N3 O+ W" |7 l8 X" k: w, Z
to update-neighbor-total" E5 G0 ~5 _- t+ ?. W& x7 J. @0 C
! V( O/ A3 B7 `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( s) M9 {' a; R5 @! c9 O$ l; r  @% z- K+ `! `; _) g" `0 t% `2 Q( \) `
1 y: Y! N6 b) x- [
end
7 G. p0 x3 }; M' t0 `7 W. K9 n7 D2 d' M4 p
to update-credibility-ijl - A' F' c/ J' ~

% p+ z! q: g6 v" l9 d, ?;;
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。7 E' A+ s4 ^2 v
let l 0" B" x* ]: o: l0 V1 C" p
while[ l < people ]
/ p) V5 }: y# G9 i8 G;;
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
0 k# I/ j# M. ~; S( v0 T8 G[; l- N- _. u1 ?5 @
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 Q8 x7 e" n5 i2 W: Aif (trade-record-one-j-l-len > 3)
0 s( U7 _8 M9 f5 J, _9 E[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. l% B* _' k" F' v$ z. e; Z$ C7 W0 w( _
let i 3
" t4 T1 @# S9 Elet sum-time 0
. W+ {; J  n2 g% q5 Z* g7 t+ Nwhile[i < trade-record-one-len]4 |! A5 P; ~, ]2 h& F! R
[
# j8 _% X* n" @) |* o) Xset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: G9 m+ g/ ?7 y4 d) \! lset i
: P3 ?; i* t5 J. e! P6 V( i + 1)

& M$ X; y! j7 k7 h; k. K]4 ?( T+ R3 p1 D
let credibility-i-j-l 0+ g0 Y: z, `+ m0 z
;;i
评价(jjl的评价)6 F) z* E# _. ?2 E6 F: ~1 d
let j 3! j1 x$ O& T1 E# O+ D& A
let k 4
; c. B. P& [# C: {. |3 H" n% R$ ~while[j < trade-record-one-len]: p3 J/ {9 l2 k& F8 X. g. m; b3 b1 T
[$ z3 a2 Y8 e/ u- P( J* I& K: n
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
$ g+ n- r2 k: @& `# {4 A3 j3 Nset 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)
9 Y. P$ c) X/ e4 L  xset j
( W& W8 A8 q1 e' H5 M. \% c3 c( j + 1)
( }; U: @1 D/ ?8 p
]8 I# M& s: g2 J) n
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
( Y# c! \! ~8 Y& P7 V. Y% v/ A: X, ?0 `+ B5 h* w. f
0 A) V6 T$ N% m3 C+ ^- r3 J2 `" k: t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! z$ j! N) M4 @;;
及时更新il的评价质量的评价
3 P6 b- Z5 F4 Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" k  z: K( L: @$ s! L+ y% C. Vset l (l + 1), K3 y& Q, H. t* ]' ]
]6 Z% L2 q  v" t# N
end
( [1 L" C& z% r% A8 \4 d) H: m5 y: o
to update-credibility-list. C- Z! U3 _- _/ E% y6 U  ^
let i 0
) b) Q7 x7 H, U& lwhile[i < people]0 O1 Z4 B, C2 r, k5 f. @0 k
[& p2 l# ^; L8 `- P; _
let j 0
: ?1 a. B* {# Z- z: \# i" dlet note 0: F" F) Z. ^" \
let k 0  N9 d! P; b7 b8 O
;;
计作出过评价的邻居节点的数目' O3 u7 V& O3 e0 L1 `: G5 ~8 s: z
while[j < people]! v( z% c) @( K; A( G5 B" H
[
' f: Q7 u' ~8 Z, m- M$ V+ pif (item j( [credibility] of turtle (i + 1)) != -1)
9 a; p7 I5 R+ P& U2 q& z. s;;
判断是否给本turtle的评价质量做出过评价的节点5 q* t0 d! z2 O# F4 d
[set note (note + item j ([credibility]of turtle (i + 1)))
) ^9 w+ E9 l" h3 }% i;;*(exp (-(people - 2)))/(people - 2))]
. G9 v7 U, v  s0 q' P
set k (k + 1)
  a, P" Z) u8 e1 ?! s( K]
9 \5 O4 ]( H* K  Iset j (j + 1)7 u* O$ z7 n+ p* J) r
]; ]; @! y9 R: p' O' G. }
set note (note *(exp (- (1 / k)))/ k)+ f2 P! e0 }! M% L7 W1 m
set credibility-list (replace-item i credibility-list note)
# E* L/ J5 G7 J/ uset i (i + 1)
6 a: L. U4 l# G: b2 A]9 y. @. l& x, P
end
; E. Y1 H2 z2 j2 L; h; G/ u. e) I' c2 }. y: F
to update-global-reputation-list% l  r% v3 |% u2 X, _5 x
let j 0+ C9 W4 v+ ~0 f0 v  Z! z
while[j < people]
: t, e7 y9 X8 t+ S7 }  I[0 H: y% b  O) A$ f
let new 0
6 Y* c. H6 Q4 C5 v! `, i% ^;;
暂存新的一个全局声誉
$ A; z7 d+ g4 n% J; R/ A( Slet i 0
3 E6 s5 Q+ c. A4 m0 R; j! Ulet sum-money 0; E5 K/ U) r$ s* s, P  [
let credibility-money 0
8 B( L, p8 i6 h. _while [i < people]( B* c& A( w- o$ P* L: T( k8 t- n; \4 a
[
. l1 O  {' s/ Q9 j/ `2 zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* w1 q4 M% a3 Q( n' N- @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% v9 l! P. W* {# s  aset i (i + 1)7 e' O, S( a( I! |3 w4 ?. ]
]
, N8 Y# S8 c" c$ G# ^) [( A; jlet k 0! K9 C: X. [- X5 r; C
let new1 0
! C$ y' \; y# fwhile [k < people]
- W0 t' K0 L& P- w+ w6 Y. V[
1 H  {+ C9 h0 X8 }+ t; _set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)  e# ]: E) V1 P- Y0 O5 M
set k (k + 1)
9 I9 S, t3 a- Z/ X# w$ L]( v; c' ^/ X0 A& J5 B! F
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & q( @. v2 r7 E) L  ~" l( q
set global-reputation-list (replace-item j global-reputation-list new)" s2 K( e% M! s+ W  O
set j (j + 1)
; R5 J- l; s; [: r4 {& B]
) I; s. Y9 G& s  `end
+ D7 T" z1 w. [+ i
/ z. H5 L) Z; P" ~" s$ q
$ E0 o7 ?3 ^+ ^; \9 W( l) T
3 f  K. r$ X; ?to get-color5 [7 A5 e( H4 t* f

+ d+ t2 b' F. I1 L$ z2 R: mset color blue

6 Y6 N- s& h* _4 p: yend
2 L0 u( \( @7 m- |! s  e+ h; x- \# {9 t% T
to poll-class; k. k# @. R( ^' [' x: ^$ |
end# N0 S+ `$ c9 Y! c+ @

. ]! _5 X& S, r) u7 |# zto setup-plot1
' c$ ]9 S1 R" b0 |- n9 J9 U# A2 p/ l/ x9 L) Z
set-current-plot "Trends-of-Local-reputation"
4 D: o/ W7 Q7 Z) b! W( C
) y4 i$ u& `! ?! [' l  N$ w5 P
set-plot-x-range 0 xmax

) H9 a* p  X5 D& e  ]6 ]
! y, a- b6 a1 M* k/ @, |, T0 ^* Aset-plot-y-range 0.0 ymax
2 H( J" w+ x- b# x9 J
end
( N& [/ P6 [8 w! \
/ g" V: }& q& O- t* c# P9 Mto setup-plot2$ c+ ^( w: q: l! y& M7 B* ^. e
9 h; B6 ~1 M$ B) |2 f
set-current-plot "Trends-of-global-reputation"

. ^0 @7 ^7 D3 p2 @7 L5 C* l( {4 U) c
set-plot-x-range 0 xmax
) T6 H) N2 g# k9 C3 F5 P7 E
! S% P) v% |; m  f1 ~  w3 h6 t
set-plot-y-range 0.0 ymax
+ P4 b$ b% R( A, {
end2 [7 _) W4 M. \& Y

$ z7 z# l4 C9 T( H0 Fto setup-plot38 F3 E" [& D* M
" ^! r$ V4 S9 G4 @6 R
set-current-plot "Trends-of-credibility"

% S5 G% ~! i- |8 M+ o( U; G& G" l. e9 Q5 l! d
set-plot-x-range 0 xmax
% Y2 O* y' \; L( ]) ?
* ?& H, R8 v: P5 Q0 [  V
set-plot-y-range 0.0 ymax
2 j  q' F( t3 R1 @! B# i0 _
end
3 O7 }% ^7 d: d0 i0 Q
9 n2 x8 q$ r- g9 P( ]/ Lto do-plots
. ]2 @$ f) u2 Z1 H# J5 |set-current-plot "Trends-of-Local-reputation"
& ?: |2 ]# E) e/ s, qset-current-plot-pen "Honest service"
! z2 u! o; i9 f/ ~, Z# x3 eend
) d" i$ V" k6 l& R" S2 F+ y- z. y  ?% w& s
[ 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.
; V) W# C; X' d+ j; ^1 i5 w( M( {9 P* B; M
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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