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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:
7 i/ S' ?: {& ?  p& U! V6 c4 C* pto do-business , @9 ~' J  E$ Q* I1 O
rt random 360
8 |" }$ T7 v# f- W fd 1
+ o( v. Z2 U$ a+ S ifelse(other turtles-here != nobody)[3 C2 q9 A1 Z4 o( P1 ]+ T  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.
& T* y# x8 n" L# _/ ^9 L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 M+ E  z6 f' i5 G   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 N+ }2 |. r( G3 b( v% ^   set [trade-record-one-len] of self length [trade-record-one] of self
: H  `% Z+ D& Y: O. A' `) D   set trade-record-current( list (timer) (random money-upper-limit))6 g" X+ P" r' Y( {+ a" _3 _8 D( O. S

& K2 w: T) ~  p7 U$ d5 Z! \问题的提示如下:
* b- ~% K9 X% Q( `6 @
1 p) o6 T3 Z2 _error while turtle 50 running OF in procedure DO-BUSINESS
0 g* E# @* `  I( P3 C  called by procedure GO& k2 O, H7 X( J9 K/ K3 }/ _
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 x: C  P1 z+ O* J9 C
(halted running of go)
) i5 u7 [( b) t. Z4 R
6 x; B, i, t8 K: l+ c% P( D2 P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~~5 b( O9 A5 p! e
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. ~) V" ]6 D* L6 g3 Q" P6 G
globals[" S- u8 B- W7 F3 D) ]
xmax6 Z# }4 T! f  q7 I* A9 H
ymax
% S8 i* j9 I  H" kglobal-reputation-list6 ]4 L- R) l* g/ i8 Y& E
1 J% b7 H( F7 t9 @: S3 P( o: r* }
;;
每一个turtle的全局声誉都存在此LIST' k; \* M" z: z0 F
credibility-list
( m# N# q1 e# ]: A;;
每一个turtle的评价可信度
) p! k# E' R  Q$ _: D: R, ]honest-service
: `0 |% x" s% Z9 A9 [unhonest-service% A& ~# J( @4 `2 l+ T1 b$ n& S
oscillation0 L, F) ~3 }  @; M
rand-dynamic6 r; ~0 M0 E+ e1 _0 q
]4 P! \6 a* S" I4 m$ g5 x" v& o, l
/ Z# p& m0 O; a
turtles-own[
/ K+ F- M- I# ?, [: etrade-record-all
! U' O9 Y4 P  C) Y. P;;a list of lists,
trade-record-one组成
" }% e/ Z* \6 }5 ~# itrade-record-one5 k- S" K3 j6 B& {
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& t1 i; K' s7 d7 n) {8 e
. `% f3 a8 n' {- |& ~
;;[
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]]
* u8 {( H4 D; x6 r* utrade-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]
2 p1 }2 [6 S& p" Dcredibility-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/ Z1 _) ]1 {. c9 ?  Y% V4 S
neighbor-total2 t" Z# B; I9 Z( X
;;
记录该turtle的邻居节点的数目9 F6 ]) x& g: Q' o9 W3 i
trade-time+ s6 b7 i0 k8 U! h8 ]
;;
当前发生交易的turtle的交易时间6 n& {; U0 V1 {" x: Y) ~* |
appraise-give' z( m5 U( l8 @7 f
;;
当前发生交易时给出的评价" s, K) B, @! O4 A3 m/ Y$ l
appraise-receive0 h: q" b8 D0 s1 L
;;
当前发生交易时收到的评价& z( x% v( f! M( h" U# I; V
appraise-time
# @+ n: Z3 I+ q3 F, K;;
当前发生交易时的评价时间
2 h" d& ]/ |& W- {local-reputation-now;;此次交易后相对于对方turtle的局部声誉, q" |; F7 m; T7 G( P% l( v4 D
trade-times-total9 z  M+ s3 k) k4 G. ~# L8 i
;;
与当前turtle的交易总次数2 ]# ]* Y5 M) x- `6 s( Q4 ^) I
trade-money-total
3 a5 g: c& x4 A! u3 k) L;;
与当前turtle的交易总金额; s& o- r8 }0 B" W5 l
local-reputation  [1 V7 w3 Y; @
global-reputation
$ N. U$ I# z# q/ }credibility
' ]8 ~( `, d- F1 q* J* X& x6 C;;
评价可信度,每次交易后都需要更新+ ^! J* }# J( z& T8 C
credibility-all- [1 w; w: e# O( }
;;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/ z5 h. [1 \( @$ x* ^
- q( w  ~3 u& P* U0 c
;;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
2 W2 ]2 c: f" V! x, H( Fcredibility-one9 C  M' I; S7 T$ V
;;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
4 k9 m6 z' z  }% b6 {/ K% e7 gglobal-proportion* U: `8 C7 k* A
customer
# D6 @5 x! P& z& x" k/ J. \- Qcustomer-no- Y+ b! d% F1 u% }' ~' u4 k6 S
trust-ok
# d# L- h+ s  m8 I8 ~! e8 htrade-record-one-len;;trade-record-one的长度  {2 X; a8 H9 x' ^
]
+ Q8 P' T5 f. j0 _! C' \
! v9 `2 y  L. g;;setup procedure
* g$ l) A$ s7 {1 ^1 }" C1 P1 \' b+ P, H2 \, [: y
to setup
) U- o1 G- h  V$ i" i: Z# B6 s
/ D) }* @& g3 g( T8 |# \2 U( nca
, S2 b8 [  J- [6 i
% y% N2 }: g+ G% g
initialize-settings

' I: @, B" j$ ~3 e( S. x/ m
# K; T9 R( C8 T* L3 A/ @crt people [setup-turtles]
  [& D$ s) ~1 V8 ?
! J  R0 a) [0 e( r0 I1 R. E* `; h
reset-timer
" G; r! g, f8 m& a+ i$ q
) \* ?% F/ J$ H
poll-class

2 \. Y  o0 j+ T; k, R1 i
& M' A( |, N; U+ J6 P0 r2 O6 usetup-plots
% B' S* Q9 G, a3 z9 z6 U8 U% c
7 l: b: S/ `' O/ I; w  g
do-plots
2 Q" q9 a$ z0 \$ ^! n
end% L1 a2 \" Q6 r. ?

+ i4 `% H* F% b' ?8 ]+ Sto initialize-settings# \2 u9 V. Z! ?* K
4 a1 v; L. M1 j# ^' `* Y
set global-reputation-list []
! Z: \& }+ j5 w; C6 T- h
& k8 n" R- |! j) ?' r
set credibility-list n-values people [0.5]
. r( I4 {# k5 e3 b7 t7 q5 w4 T

4 R" N# q0 T  m  ~. o0 iset honest-service 0

0 @+ S1 v% U8 D) [, S* @8 v' s8 N( ^1 o1 d
set unhonest-service 0
; K# k: K" [& W2 C+ m/ M8 m1 o' g
' Q% @- S( s% b
set oscillation 0
3 H( j* ^# G5 _
! V2 L' p% B9 n  g
set rand-dynamic 0

: e! s1 s( A3 \end
8 v& C6 J% ~- V( U
. \# ?+ R) U2 Y5 q; sto setup-turtles
4 H  T9 u  M0 p' qset shape "person"
1 X! Y2 J  O& U9 C! ]0 S  @* }setxy random-xcor random-ycor
( P: }  }6 l1 \5 F% t; g. @set trade-record-one []
* ~8 T9 t$ n; q

% ^* g% N' L* D4 B; ~$ |set trade-record-all n-values people [(list (? + 1) 0 0)]
4 [3 y( D( c0 C* o2 h

; I4 r; p( P( M$ w& e, l7 Xset trade-record-current []
. F" ^* V7 I% ?% ]3 oset credibility-receive []6 I8 ?6 k( ~8 y) Y
set local-reputation 0.50 G1 ?! d/ P0 @. B, f$ |- H
set neighbor-total 0
2 {# z- a! Y1 Q" U8 t! b' a* I4 R6 \set trade-times-total 0
5 Y; X0 m' @9 v! i' jset trade-money-total 07 B" U& R" i) H7 Y# A
set customer nobody
0 Q, O$ c8 S- z: Z/ Rset credibility-all n-values people [creat-credibility]" E6 m0 @: D* }! j3 U2 o1 g5 @. F, i
set credibility n-values people [-1]
! p* H) a0 `5 Y7 |$ p% {get-color
/ |$ i" f! `  E1 r. p
8 r9 ^9 Q( a! F9 U; @/ X0 X3 W  r$ M
end) i/ i' s  w0 J- _' H1 \  ~' ~
+ i7 @! |7 g& R& d6 l
to-report creat-credibility, ]: D# t: [4 O# R9 N' Q
report n-values people [0.5]
. l- v- q; v8 T& Iend# S4 G, d9 D, Q% f0 ]

* e4 |0 N* K, Qto setup-plots/ U8 U, j  M0 ^. O9 [% X* m6 {+ T$ D
& W* A! F" P, W* C
set xmax 30

" H9 r7 ?) r: \5 k! D+ x8 x
4 f& [2 _' v( K- jset ymax 1.0
! |9 f3 P) F6 M2 I. @# s
. ~. s- B- g4 `+ {& k: s  P4 Z- G
clear-all-plots
  V+ O! I5 u5 M7 N9 l, A" Z8 g
0 e8 i8 T! h! z6 h
setup-plot1

# z! z3 G  ^5 V+ r+ ]
* S7 A4 V) Y, Y3 w* n9 ~setup-plot2

% H  \: p! u4 |0 Y) d0 X/ F/ l0 V, A7 \) S1 i
setup-plot3
% u7 S' K1 U6 T1 B
end
' G: Y1 s, e9 j2 t3 v5 }6 C* r+ B7 z* U/ m& [
;;run time procedures
6 C$ K5 q7 }3 ]2 Y9 G
/ S6 Q2 L7 @- O# B# K! ?to go
; j+ V; b- w$ }, x
6 p+ Z, O" ]! a  U  D5 f9 Jask turtles [do-business]
$ T* X  k& m: T" X3 N
end
" g* D' J2 B4 u% `
3 F9 w# A6 N" J. y$ `/ n' r% Q: {to do-business
* ~( G! v  |0 |+ K
. i8 P% g5 _, e: K; |* m1 m) A: E
8 f$ r* s- j: A3 e- F9 z6 R8 O
rt random 360

6 u& j' n3 c2 L3 I& q# q6 w# g+ f  Z- Z# {4 a( G' ?: G/ z
fd 1
( B2 B$ @. _1 {
- @, B6 J' o6 z8 M3 l
ifelse(other turtles-here != nobody)[

. {: [0 }4 c! ~- d* d$ R# I- t
6 {' I% n/ B- t: k5 k, U2 Qset customer one-of other turtles-here

: i  N* {3 Q% c" L* \- v, S5 ^% s' N
;; set [customer] of customer myself

! G) c8 i: {" i. @6 J( x1 p! O' Z/ G6 ~, Z
set [trade-record-one] of self item (([who] of customer) - 1), b7 S( u5 a# n) c6 q
[trade-record-all]of self- w7 Y: ~4 d$ w' [, ~/ K, y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* |: W# q7 o+ G2 M; i" A* L/ U
" z) ~* _+ L+ [2 ]2 R, @
set [trade-record-one] of customer item (([who] of self) - 1)5 j9 W6 K  ^( d) D* l, q  R1 |
[trade-record-all]of customer

; L+ q( G9 p. n' v3 {
+ R- f5 W: z+ \# q6 x1 B) u% U4 iset [trade-record-one-len] of self length [trade-record-one] of self

% I  e9 q$ v9 `  V! v+ E
- u# Q8 s8 l1 B8 J1 U, [1 v% uset trade-record-current( list (timer) (random money-upper-limit))

, ~; k* C3 {* e" x. h
( B  x3 I/ c4 f8 `2 @( Xask self [do-trust]
# @) l5 z7 U# a  y5 M/ `;;
先求ij的信任度0 I, L( [2 x9 L6 K, d) _

1 f$ ?6 L( O+ cif ([trust-ok] of self)
/ O7 H! {  M+ ]+ Y;;
根据ij的信任度来决定是否与j进行交易[, K/ Z' w& k4 [  Y9 k& G" j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% D2 b" [. b: m) d

4 n1 k! n9 ]* K+ I( k0 z4 ]8 z[
2 t/ Y" j/ E, }9 _. h% M) |

% N! h$ e# b: A" I/ d+ z, x3 ldo-trade

' n* ?& Y: ~2 R9 z' O1 W' S+ `2 m! ~/ \) u, ~0 w6 K0 G
update-credibility-ijl
: _4 G* a% O' D$ u: G' M$ v& W3 H

" J( T% B+ t5 a9 W$ f; t& jupdate-credibility-list
: g% L( E* ~( t& R

$ `/ i' d: f( |: [% f5 I% r7 m4 E; t0 m2 o0 {2 Q" W( {
update-global-reputation-list

5 _: S. ^' Z& _0 S$ P1 ?; J7 u+ o7 K- A
poll-class

$ i5 u2 {" [# \: L4 x9 ]
; j; |9 {. M, T& ]& B8 M5 V* ?2 G" wget-color

; ?8 I. ^% H# E. q" t1 Z5 L
! `: r$ C' j: t]]
3 ^. w' l( ^7 E3 F# S
- Z- |3 D: J" V; V# o;;
如果所得的信任度满足条件,则进行交易# s3 o( {. ^7 W( U  Z2 w% v

; V- |2 r$ O5 t$ ~[
: M! m+ Y; b# w5 u$ C! \

) V2 F3 }  M$ X1 \# T" @3 crt random 360
1 P5 B# d7 v" S* i+ X. N

6 o# j& w6 f% h1 j5 Sfd 1
' v+ c/ |: R) L, {6 v% I+ [# l# V

+ f/ z/ n/ b! x0 []

& f, F% C- d6 V( X7 R
) m5 r1 D2 ?. bend
/ L1 w0 M* H3 w$ [4 U- x
8 I: z: u; y2 J' d5 M$ {
to do-trust
! s9 l9 E; ^! sset trust-ok False+ Y- c2 P% c2 A) ?9 v" Q  r, |6 E

$ e( w, z& L7 ^5 b) n5 M1 Z

6 N* y  }+ Y, F# D- Wlet max-trade-times 07 X( f  C& Z0 B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# p# Y+ T) G$ T' Ilet max-trade-money 0
6 {5 n3 i8 n+ Y* z/ m7 I5 fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 S5 C# O% m2 L# ^+ @* ?0 F% g  G: [
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 V2 x  U$ d+ u" s" E$ }& q, b6 N0 G
2 b  D# r) z( _  V/ Q5 ~
get-global-proportion" R' }( i/ L+ n9 P4 t* J# q0 v
let trust-value2 r" J$ L/ ?; i# k: W8 Y+ P3 ^( y$ k6 J
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)
: D$ Q) f% E- q, ~! n5 A* w
if(trust-value > trade-trust-value)7 v4 m$ k/ v; [: \9 D2 Q! y; C- F5 [
[set trust-ok true]
2 w" M( q  S7 Z, Q7 K' }2 e/ @$ mend, [0 O) q* U6 {" `+ ~% _
& {3 a% s5 \0 t4 C! H3 O1 d6 O0 E
to get-global-proportion
  W) e, x: L1 p4 `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! Z; a. C3 k9 p  |
[set global-proportion 0]
% Q+ `. u8 ~3 W[let i 0
" A2 |; x# [1 blet sum-money 0
* U; o; g6 |! k9 Lwhile[ i < people]. ?+ u1 M3 E0 }  a+ R
[% [! t4 P4 Q$ V1 {" S1 ]
if( length (item i
3 Z9 b( K" j: \* \[trade-record-all] of customer) > 3 )
  V) K! w& v* f% F, v) W+ y) [
[% C6 a9 y) V$ K' r; Y' R
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" M9 a" o5 |$ ?0 _
]# ^6 c; l, S# c5 M( l& P5 W
], l6 Z: |' y# }+ j: L; V5 D) ^4 O
let j 0  S3 e9 h& `+ l  o4 P# |( X
let note 0
  v2 f7 Y, p0 p6 H6 Z6 ~while[ j < people]+ t  v8 `+ J( z+ j
[4 Q4 I/ x& T8 S" U8 G9 x
if( length (item i; s* l* B) }8 O9 O  |9 V
[trade-record-all] of customer) > 3 )
# V: {+ T" n1 D7 L8 Q, n
[
3 x* o$ L/ P: Y( Fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" {% U, K) o$ O$ q' t( _0 I' L[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* [3 p% W# ?7 A$ l
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- e3 B4 [( C5 A& }]
, ?) I+ [: `0 o' f5 M]
! t8 o, c" y) [3 I2 ~2 rset global-proportion note9 Q/ g- B/ K8 F# U
]
0 z, a% [, v. @' |. W7 pend
0 s4 u( b$ {6 a0 K+ l  C4 u
+ A3 l2 r% y' bto do-trade
% x. Y7 z# b3 p$ Z1 e- e;;
这个过程实际上是给双方作出评价的过程
* B7 A% f/ J2 R. N" S5 P$ Y2 o2 fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, m% Z  g; l# I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. }* }( ~, h0 s% ?* jset trade-record-current lput(timer) trade-record-current( l8 R0 @* Z3 V" D+ [  T
;;
评价时间7 a' L& v5 r+ h0 E; G1 D% o
ask myself [
, l3 q" f! k0 h( m$ k" gupdate-local-reputation
* D- }* U5 p5 vset trade-record-current lput([local-reputation] of myself) trade-record-current
6 P! o% K# }. ^1 W3 ?6 U# N/ P% B]7 t' x& J. t# k- X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ G' ~6 {2 s5 B7 O* j;;
将此次交易的记录加入到trade-record-one( P$ J% G$ _9 I1 U! a, c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: ?3 z' R! W( Z/ Plet note (item 2 trade-record-current ); {( `5 _' m" S
set trade-record-current8 o* W/ x+ g0 }( M& |0 f2 l& A
(replace-item 2 trade-record-current (item 3 trade-record-current))

# B/ k: U3 A* k# Q$ O: wset trade-record-current
7 ^7 Q8 h$ Q" u+ a$ l(replace-item 3 trade-record-current note): O( m  F- ?+ a! m

2 G. t5 Y& M' I0 T$ [
) R+ `) Z' C% F. V+ @7 T
ask customer [
1 Q+ z; B+ q$ f& \8 |; r: Nupdate-local-reputation
+ \, K# {! E- Z- |! }% A: [* ~- b0 Hset trade-record-current. M4 L9 N1 m; D6 k/ G& L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( J' M& I6 M; D- Q1 E- |' D
]
7 [+ M2 J1 I  r3 A4 i$ y- W8 C0 \5 Z2 J

/ O9 V( [5 s3 G/ z* Z  T& nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- g6 G3 ^; V) ]' {8 w( y9 U$ e
9 z2 l+ R6 I8 b$ @
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 s0 R4 V1 k- Z7 i# w
;;
将此次交易的记录加入到customertrade-record-all
3 Q' E. G6 U9 g# E$ i+ }2 Nend
; h$ x, a- f5 w
7 l( `( q& ^- a( Uto update-local-reputation3 b/ \0 e) z( s, g% Z3 }+ S! i
set [trade-record-one-len] of myself length [trade-record-one] of myself
7 p+ E0 a1 X! B3 }+ {0 e& ]& }& \& Y1 l4 H
8 _  L, e9 ~* F0 T
;;if [trade-record-one-len] of myself > 3

5 m  [% _2 R. {7 r: Z6 iupdate-neighbor-total. b# Q% g# r: e& n4 t7 m
;;
更新邻居节点的数目,在此进行& h0 O& Q3 [. p" y9 O
let i 3
; E* {& B# X. Q6 Qlet sum-time 0
' e2 e6 r2 X; U0 zwhile[i < [trade-record-one-len] of myself]
% ^  Y1 A5 F& ?) D& [) H* ~" Y[
0 r, |2 y1 f6 q3 N# o: t; hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ K+ K( \9 p% y$ @. `  \
set i
/ H& b# I5 D$ P7 z7 ]( i + 1)
% {" c* o$ c+ d8 G6 S& w( y! n. p# Q9 k
]
7 c2 c( P8 q( W- V6 `) U- J; Hlet j 3, K3 i7 s' F& C- J+ ?# N% l
let sum-money 0
& c! f8 \5 Y) A1 Mwhile[j < [trade-record-one-len] of myself]
' a9 n) z2 s& G" w6 {; j* _[8 y: V( d# |, e$ j5 z
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)
6 B7 _" c3 F% ?, Eset j" N, z+ I" p3 f" [
( j + 1)

* [  q  b& a* ^5 p- }- p) _]
* n1 M2 N, Z4 M" B( B6 P: Clet k 3
) h! d$ w3 v& P0 vlet power 0
9 A" D9 ~8 z; X8 G$ {let local 0
- I: A9 u/ u; }  Fwhile [k <[trade-record-one-len] of myself]
8 D% A" v$ R. M! `* r[
3 v# T" z3 q6 X' P( H* W5 r8 Iset 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)   ~: q3 j+ K6 }& V& F  h
set k (k + 1)
0 L4 L$ u1 \1 g3 Z]/ c. P% g5 R) P' _( b& a
set [local-reputation] of myself (local). ?2 I% e8 y' f7 t
end; R) ^3 v4 b6 c7 q2 y! U- I
0 ?# }9 Q! y, u5 B9 L+ L
to update-neighbor-total7 q; Z4 l# I5 F7 L7 }% q
& a/ |- M7 J# x3 H, X+ F
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 w: e7 b$ @* B, I$ Z9 j
7 _3 S0 j% _+ ?2 I& h' i  O( I: ^
& p% g. i$ I; e1 X0 @& B2 S1 A1 l2 p
end; u: _3 Y6 ~: }# o5 f
* q' L6 V8 T/ b
to update-credibility-ijl # N5 m- a/ U7 C0 }0 h

  D, O) w. \6 V; q;;
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。6 j4 `5 p# U0 x8 t1 ^1 G
let l 00 a, `  f. {4 d6 j) p
while[ l < people ]% s8 R6 m& i( ]9 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
! r  \) F1 `8 h[& l" _: E- J) a2 u  ?% k- h2 V: ^% ~
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 B( y& l( s- S& ]1 Pif (trade-record-one-j-l-len > 3)
6 O2 Y. F" C8 r0 J[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
8 D3 ?* U3 j( Q( ]/ M* Hlet i 3
" ~; C2 N1 x6 x3 C5 Dlet sum-time 08 x  q4 g8 O( X/ F$ W) M; ~% J# @
while[i < trade-record-one-len]
7 `  W. O5 z$ N$ m9 ~[7 ?$ G0 Q" g" {+ ]/ x* e
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% X3 K2 i' l0 ]0 u9 b: p  ^set i/ o4 Z/ w4 x9 b5 O/ g- u; J
( i + 1)

  l1 O/ f1 L4 D]
4 N6 i' h1 f" \# ?9 m7 U; I1 glet credibility-i-j-l 0
( F9 c0 u- H% O; ?& @;;i
评价(jjl的评价)
( N6 t2 A4 K( t) a$ ~; ~. elet j 3, f) B" _$ ?3 j0 Z4 P& Z5 R$ i" i- T
let k 41 t0 d9 k! G4 L* y4 N/ m
while[j < trade-record-one-len]
2 ^- c# s' J1 t9 {) m- z8 ?[. c! ^$ z- X+ d, s
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
$ L" Z# C$ D4 M2 j4 J# _" vset 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)% \6 S' U" J$ m) Q3 h
set j3 J) g; e3 N3 l, o. O" @
( j + 1)
+ \  Q# t) w# E
]6 }+ C3 i, k$ r$ C  L" a$ h2 s
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 ))
8 [' F1 u. t8 R8 d
9 I9 V8 ~4 P: r( F. C
% P" H$ c. n) a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 S4 K0 }& R6 p, ^! h
;;
及时更新il的评价质量的评价0 P# V+ {$ f8 P4 r( G/ I8 N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 F% x$ P+ a2 W' C1 F  w
set l (l + 1)
+ S2 g' Y8 D6 @) I]) z+ y) Y6 j1 C- q6 t3 e  T
end
& [# S) A6 K7 t$ w/ d* y& Q" T' n6 B. Q8 k
to update-credibility-list6 b  U/ ~4 [5 Z1 n1 m
let i 0' r( r8 [, N. D  x- f0 k) |
while[i < people]
" R6 f/ G& g7 R) Q) a/ M! h$ z[4 {( T/ P. t5 P0 W
let j 0
, n- C+ S/ H) i- D+ Xlet note 0' M$ \1 X6 y; _: O
let k 0
2 \0 A: @) D' B1 S/ u  L# u0 \;;
计作出过评价的邻居节点的数目# C5 X, a' ?" T
while[j < people]8 ~0 y8 Y! e* X, D* s) u2 t/ u
[% E6 l8 M# l, t: f
if (item j( [credibility] of turtle (i + 1)) != -1)$ v4 v, o( r+ {" s6 Y, a; d
;;
判断是否给本turtle的评价质量做出过评价的节点
0 v+ v: H; @3 M( p3 @  @[set note (note + item j ([credibility]of turtle (i + 1)))
+ t, W! _- v# c6 n0 f, s8 D;;*(exp (-(people - 2)))/(people - 2))]

, R1 r) U0 q5 Z9 N# Mset k (k + 1)
/ x* n* A# {: p. Z! h, Z& Q]# g! ~6 F2 i$ K- h
set j (j + 1)" }; Q3 x3 I8 O" ?8 A) z7 B: m
]
) I! l1 i( Q; Q- Jset note (note *(exp (- (1 / k)))/ k), [. e! Z, n  h! o$ z! H) N
set credibility-list (replace-item i credibility-list note)
( \9 o4 k% [0 Y# B- fset i (i + 1)5 {8 [) d$ E4 ?' P* g
]+ }  n. x$ J6 J4 Q! q6 p
end
" k1 A* r% P; g8 Q: c- E0 [, V2 ]1 b$ k
$ G; X2 E) A$ J- Q0 ^2 o7 C1 ]/ l# ito update-global-reputation-list
+ S2 S, U/ L8 [9 X8 T& }let j 0
% p/ B/ Y3 K% d7 ewhile[j < people]0 n7 e7 b$ e  s% g- Q  ~( b  n
[+ F# x. y/ [& F( H7 S4 [( o( Q8 |
let new 0* o: t2 e2 W/ x' K$ c7 \
;;
暂存新的一个全局声誉6 F3 G# a( u7 k3 c6 E6 H
let i 0
! ]7 h6 O! K4 D; flet sum-money 0
! x" W9 ^1 E9 M2 ~5 ?let credibility-money 0
  v8 g% M+ `9 u- n# W! L/ {, x- m& Lwhile [i < people], M0 ^! f' d0 t/ ~3 N7 m  }5 ?
[0 \" U: k( T. Y$ L3 ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! |! M# G$ v/ K8 t& @
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); }: e  W$ l% u4 i7 w- u
set i (i + 1)
; M: E) w; R, w/ n. v]& v% ]- Y9 ]  t/ @6 `% u. [0 R2 w
let k 0+ R: y4 t+ H; V3 O4 S
let new1 07 s, F( _/ P% h( p8 ]3 s( g: _6 O" t
while [k < people]' y) _& Q5 k2 K$ ~, R( m- b& N
[* U+ q! S$ I' O1 }5 k
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)
  a3 g) Y6 N8 Y5 E! l' w: j6 E7 aset k (k + 1)
$ O  h4 f0 D0 f! R( t9 g7 `/ }]' ]$ d" p, o1 A9 H7 g3 z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( P7 p& \) O3 r1 h4 G$ F7 C0 p, E
set global-reputation-list (replace-item j global-reputation-list new)
1 A; A/ R5 |% wset j (j + 1); Z+ t0 O! m6 E7 g
]
, Z/ @! C: x/ x' }7 h7 b/ ]end
) L) \: c) a* M8 d; _. W: R. V. ?( G! {. D4 }

. i7 K8 R. @9 Q* G' @& B8 s2 |" t" X: N
to get-color! c  h. _. f9 d9 }

7 Q3 T0 J- \+ v$ w( M; w! fset color blue
- W, K& ]# e/ s) T
end
0 l: g! V5 M1 n3 B% l6 c* g4 E! T: R: n. q
to poll-class
) l3 t: _/ Y3 J' R$ o( k% J/ wend
' F. `( r% [' E9 w, A- t4 q
8 K  ^: o+ k: cto setup-plot1
0 _: {" [8 p* T1 i% z
5 u2 W, J! D& v! V$ jset-current-plot "Trends-of-Local-reputation"

8 H. ~7 a& y* V: a3 v; H% ?7 d3 U, k! R* ^" ?
set-plot-x-range 0 xmax
7 c0 T' W0 ~5 \1 n5 q

8 e, z: g1 Y. U& I; G0 a  Yset-plot-y-range 0.0 ymax
, q5 L% C/ }: k$ O
end
2 k9 t' e; [( F) @, M. U% q' W; e0 ~* V% Q) b
to setup-plot2' \$ N9 n2 u) k
$ n8 m$ ^" R+ A  Z5 _- O' t9 q) @
set-current-plot "Trends-of-global-reputation"

8 w) i. B  ~- Z! y9 j; |, I
* Q5 {9 f/ L4 w7 g: H- Mset-plot-x-range 0 xmax

5 q, s+ _5 ~0 u  [( v( S' P8 a* @  F- G, V
set-plot-y-range 0.0 ymax
" I7 C! r. ]* A' O
end; q$ T* y# o: E/ c" }
# U5 {7 l, b8 h, ?% s1 L. \
to setup-plot3
0 K  T- R$ A% K* I* v5 u# d$ s. J5 n" }$ J$ W
set-current-plot "Trends-of-credibility"
9 j6 d" P) {7 A1 ~
6 B: O5 e+ x' m' T1 E' d6 C2 C9 I
set-plot-x-range 0 xmax
( G: ?9 t) ~  m
# `/ r8 t4 d$ d$ A( y, d
set-plot-y-range 0.0 ymax

( N$ C# E; z' ]8 S; S6 w" cend
: m0 A+ E8 V! Q) j5 \! t8 a
! M' _0 f# t% g# R: M! |, M0 ^to do-plots
; A  y, P0 B. G4 Yset-current-plot "Trends-of-Local-reputation"
: _: i* }1 [4 C' |set-current-plot-pen "Honest service"9 V, W, c& Y' N' j8 o' {
end( s, ]2 Z* v  c/ W% V# R: [

3 d7 I4 c6 Z5 R/ d* G9 b7 t[ 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.7 f; F! O: B2 `

9 x' u7 b$ o3 }) m, g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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