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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:
6 G" R( _' Y$ Y; p3 t8 }to do-business
8 ?- A; i/ h7 X2 U4 L; H8 U rt random 360
; |4 Y: ^3 }* B; ~+ Q( B fd 19 I8 D6 r* [4 B+ ^2 X" n
ifelse(other turtles-here != nobody)[# @# C& x2 ?' K2 ?" L( r( C' E# p) X: v
   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: D# R$ n# I4 [
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 w( m4 u5 B2 ]6 {" k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  f  L: V+ U: ^   set [trade-record-one-len] of self length [trade-record-one] of self
  |+ _% g+ q6 Q% d: U   set trade-record-current( list (timer) (random money-upper-limit))
& R  U$ D0 ~% c7 X- [% R. X8 E
# x1 e1 F' S7 Z2 ?# g  ]. Z! c问题的提示如下:
5 M% C+ _, r1 w# r, p# y% i, A+ w7 _) n" J6 H! H' _! i+ {
error while turtle 50 running OF in procedure DO-BUSINESS. H2 N" A) r) Y% f
  called by procedure GO7 R- |# r5 I. p" w- X- l' n
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ c! ^! H. f, p: C$ c" x& m, `2 V* K+ g( m
(halted running of go)
' Z. u9 Z9 ^  }2 c
, h9 [  M1 U" ~" `0 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~~
0 x2 u; y* q4 \% C3 H; V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7 x2 H% h! ^% n+ C2 @% S
globals[
- `7 \% |2 ~. @xmax
. A+ l; l4 k+ T" @* Wymax
& T0 u! i/ O7 B& W5 W4 M/ Zglobal-reputation-list8 B8 ^$ s( r) f! F

% L, M2 a+ D! k& {;;
每一个turtle的全局声誉都存在此LIST* ]2 [! @+ |4 H
credibility-list# b# ?; z, u+ d8 c1 E8 R1 `5 t
;;
每一个turtle的评价可信度
6 u4 g: X9 s, O/ [( @honest-service
1 ?) U# y6 a! @% g  m6 ^unhonest-service
) `7 ?  F1 \" V: l0 X$ q3 qoscillation
" x' `. W% ?( S" Hrand-dynamic
; z. g+ P. Z1 ^& b9 ]1 @% T7 v' H0 M]
; c$ p' R0 S) \' t% A$ h% y" n* w% L. B7 }  ^
turtles-own[, w% m4 V$ q: o% O7 A% M
trade-record-all
0 X& f3 j0 d. C" o) i& {;;a list of lists,
trade-record-one组成" y+ v8 t8 Q% w9 C6 G1 O, \
trade-record-one
) w2 q/ g& s0 A: g, \% i4 i;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 K. a* J9 D; X! k( L) ]; C: r3 |
  a) {( q) Q) k3 {- e1 ]
;;[
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]]( ~+ J: D2 H* A( E7 ^
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]! X( s3 c# L- c/ z6 N
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/ `. q* i2 Y% D" B8 k7 q# f
neighbor-total
& d) p9 }2 m1 X3 b- v3 i4 u;;
记录该turtle的邻居节点的数目
* [' W# e# U8 U1 A" a& Xtrade-time
9 q6 r4 b% k. p) X' b2 D/ R9 A' w;;
当前发生交易的turtle的交易时间
! Y8 I% K$ ~* cappraise-give
, e) _4 W% W( E5 D! s;;
当前发生交易时给出的评价* Y4 i' Z6 a- w" w" d) L  m/ K
appraise-receive
) @  ?0 a, Y) i7 D3 I;;
当前发生交易时收到的评价9 U' S- D( `6 Q; x
appraise-time3 z8 h6 x  t$ r- o4 ]: J
;;
当前发生交易时的评价时间
- s6 F7 X) l" l2 s6 slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ Y! L. P1 I! b* t; Q+ Dtrade-times-total1 l; c' ]! k. ^! G1 e
;;
与当前turtle的交易总次数
. @: A" ^8 `* utrade-money-total
4 J# t5 {$ y+ ]7 W4 @;;
与当前turtle的交易总金额
9 q3 G$ h  ~8 e% b0 U. ?2 ?! ~local-reputation
* ?8 T$ l/ o; ]4 x! ^global-reputation+ k+ C% z0 }: z/ Z6 E6 E: ]
credibility2 i1 o, j; Q2 ]4 d) Z) z! o4 O
;;
评价可信度,每次交易后都需要更新
  F& d% w: B4 {, x1 Ucredibility-all9 x$ e6 U  [% a8 f! s" u% ^
;;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
4 j* V, I) U3 \* `# b% l) ~$ d9 r! s8 l: U
;;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0.54 {; k0 W" L' W* j& r& \% Y6 o
credibility-one
7 H/ Z6 Y0 T- b- i, o4 F3 C;;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
( n8 a, F$ ^) R$ n; Oglobal-proportion6 X, k' N6 P$ D
customer
- n6 l: L* t0 k! ^+ rcustomer-no
( L7 ]. ]  j6 C3 r) Etrust-ok+ ?- I8 k9 S1 w( o/ `
trade-record-one-len;;trade-record-one的长度% v, Q; c) c' B) E4 z0 E# D
]
) Z: W3 y( I5 C& C9 w9 N0 C" F! d6 C  F% A$ d% D& A: n9 J! E
;;setup procedure$ J2 X2 y; i  Z

% ?6 D! G3 u% R' |! H0 ~to setup
8 @7 v  `7 U2 G5 }2 {% L# r) F6 v6 \
ca
+ o. N& ^9 V2 J( A2 N5 S% d/ @3 N

6 r/ h) q9 C* m% i1 tinitialize-settings
7 A. X/ j9 P/ I
0 y4 I$ K% o, h7 V4 ^2 M
crt people [setup-turtles]
1 Y, U( I+ s: u& \! k: ^
. H5 U! {7 B3 z9 c
reset-timer
2 B. f- h* X8 ?, |$ l$ b% a8 C
9 a1 `, g; Z( `
poll-class
' m1 T. v- ]/ q3 A: T; b

& x- f: I0 a" U6 \3 x; T( ?; Dsetup-plots
; q; B) j' E8 `! _; X1 V+ G  |

) i$ y! v: v) @do-plots

2 c. ?, V4 \2 ?# j: lend
& X. a# |$ p3 M3 n- M& a  a" v/ u* Q' n3 C
to initialize-settings' Q- i' Q" ^: P# U2 ^  r

3 J' w/ b9 Z9 pset global-reputation-list []

8 Z" r) r8 k7 ]- \! M" ~" o. n8 y, o+ r, M- c7 M
set credibility-list n-values people [0.5]
8 a3 W. \) K1 ^4 h1 }

# c8 A* \3 G" N$ ?set honest-service 0

+ O; |8 o# k' S3 F. U% j( G/ B# H% B
set unhonest-service 0

# b$ I6 n0 V) r
7 }: J1 v/ L3 `4 `8 |set oscillation 0
! l  z' b& M/ g+ W* Q

/ I$ H7 X& S& b: T, f, h. w9 A! sset rand-dynamic 0

1 O% E- j; r* z5 i8 c$ \1 l1 Dend7 d9 _; v# `# T: \& L2 ^
/ b6 _* M* J( d+ ]& X$ L  E% x
to setup-turtles
) t2 m& t1 a( `5 kset shape "person"
1 v9 l& t# y2 R, C& X* Esetxy random-xcor random-ycor
, r! W( D- Q; f( dset trade-record-one []
" F1 ]% S$ A' o1 }3 J2 D" I
& L% I- S% o+ b8 |/ L6 `& ]
set trade-record-all n-values people [(list (? + 1) 0 0)] & k& E  k+ F8 F: M' c

6 [6 r! w! t/ q+ I- A9 E, |* [set trade-record-current []# {5 z) W3 r( v6 ]# ]1 i
set credibility-receive []
/ ?! N: k( g' z. f" Sset local-reputation 0.5! ^6 w- X: o& H( }6 o2 L- s+ L; D
set neighbor-total 0
- y' X8 q; x9 _! |4 g) F, {' @set trade-times-total 04 s! y( k1 |6 i7 t
set trade-money-total 04 R6 K. d8 j6 l3 @) D+ K. h, X/ w
set customer nobody
* B9 j; ^" G7 Zset credibility-all n-values people [creat-credibility]
6 y2 P& e, p+ d6 X' Bset credibility n-values people [-1]
8 A9 S2 _% s1 kget-color1 H% U2 b. |, a' Z) c; F; h- _$ J, E
# N- Y* j- b2 V1 d; w5 }
end
( j4 z8 Z9 a& Z" L! y0 L6 V; @3 W6 I' y5 K* W6 _
to-report creat-credibility
* p% X4 F- V! M) ]$ Hreport n-values people [0.5]
% ?& |9 z3 D( P* _6 oend% C: ^$ c  a" k# x

. r. ?# [+ ~9 @8 P; p6 k* r% Bto setup-plots: T! l1 O' H3 D6 `' `' S4 K
9 H% J! X8 C5 l8 x: Z. D3 s/ a) L
set xmax 30

: a0 V& G7 S0 T  E4 V* Y; T+ e/ c$ O% _3 E
set ymax 1.0
/ F- g8 I3 }% b

" i: e% ?9 H% w1 L1 }clear-all-plots
" f! V" I: y8 G4 \
5 z2 M. ~* n. r
setup-plot1

8 q; s" f" j8 f4 o3 w# I
% j# m- l' C, Z# t6 M" Osetup-plot2

6 Z. v+ q7 `, W. ~) D) {1 P0 f0 f& H2 ~- n8 ]. a4 N& r) E
setup-plot3

: V& v; \, e# ~7 F4 P, v% Lend
4 k7 f( e: B  A: |; f
5 \: T/ L* }2 ]* i; {;;run time procedures. F' A/ E2 ]3 V! z

$ R" o' M0 D; v/ M/ s9 hto go
7 O/ Z, ?& i- ?
: Q) v8 c& `. T( p& Mask turtles [do-business]
0 l5 f% ^" T3 Z  D& A' B! s
end
" R$ r& Y( q. F, _$ V/ C7 V& @& J) g$ S$ }3 d- R
to do-business 8 o0 q9 k+ o) W$ X. ^0 ^+ D
) O- w: M: R( c* q" c' A+ u* [1 }& B

4 _4 Y7 ?% D0 Nrt random 360
" D4 u' v; O- ^- Z3 Y

# s, U% }. u  u2 Afd 1

" t3 y+ A  _' A  L0 F$ g+ s! U( k6 d: g1 N
ifelse(other turtles-here != nobody)[

0 `% |. F4 |* g- m9 c; {* m2 X* Z! Y! V* G9 G) R
set customer one-of other turtles-here

5 K( F/ G* A! b2 y
' x; w: q0 V! v7 N7 n;; set [customer] of customer myself
3 v  X; T( o4 ]* M& g9 h( B

% j9 l  }. T, C6 Kset [trade-record-one] of self item (([who] of customer) - 1)& m0 q5 p9 E' p8 g: F" l
[trade-record-all]of self+ [+ d( L: i# A
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" d9 H2 b, }/ U6 W* v3 ~

) t8 ?" Q; Y& z: @; I! ]# _7 y3 qset [trade-record-one] of customer item (([who] of self) - 1)$ m, [$ }" z& q& t: ?
[trade-record-all]of customer
& ^( `4 l; z0 J' W& x. t
% r$ X$ ?: _$ \8 A9 O1 p. g
set [trade-record-one-len] of self length [trade-record-one] of self
( ?, g6 B- `- f# c' c
' {4 L3 C% p* j9 R1 P
set trade-record-current( list (timer) (random money-upper-limit))
* a4 [5 ^, ]' b4 @3 j
! e1 F$ I3 G0 a, M: C9 N" z
ask self [do-trust]# {. f7 b& k4 \, j4 G! k, ^  m1 S
;;
先求ij的信任度
6 y5 l) y2 W- O+ t8 m( x1 C
0 S# s- l4 e/ V' ]if ([trust-ok] of self)
4 Z. \; K" w9 r2 D;;
根据ij的信任度来决定是否与j进行交易[
& ^) _, U  x( ?, R3 j& Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- a' X% I) n3 C; H
8 Z* ]4 y5 |8 n6 Q; `[

; Z6 p2 ]  z" b4 Y& `6 q4 X$ s! O6 e% o6 F- ]
do-trade
4 k, @2 H0 S7 ^  k

. a6 c4 ]! t4 c$ V# Q8 O1 J9 {update-credibility-ijl

7 R5 i% ]- t* o8 O) _& S
9 k2 d6 O" i5 I) uupdate-credibility-list& w  R: q9 n& d: [" h" K" z6 D2 z3 U) e

. `; L/ G+ U* ?; J3 L+ k/ |
9 C7 P+ u* Q$ T0 H6 Y! x' _! Xupdate-global-reputation-list

, k9 j, {- n% c; |# M5 D
& \5 @$ H0 G0 `0 h0 k' d, Zpoll-class
& N" m+ y& _: r5 ?

1 K: j+ D  v8 C# H$ W' aget-color
% t. F, I/ {3 N- f/ B

% _( _' H' {  L6 c4 f$ s]]
" K( V7 s3 \' e) L, u8 Y
3 f7 [% D1 V, O8 G;;
如果所得的信任度满足条件,则进行交易$ {, ^6 j1 g% Q. Z& L! g6 }* p
( A- ~# T7 w- u- G2 x4 I" x
[

) v# U/ @, `: b. ^# Z7 u6 E) }
( J5 z  S/ y' Qrt random 360

+ K8 R, h- C2 u+ k6 y
8 f( n4 X3 I) u/ N/ O, t& afd 1

9 x# J8 L) A+ U; F# N7 V. r" t( I
]
4 V/ \" h( c% G4 v4 _: ~

  g( T0 V3 O# J7 z! Q2 H# n" Yend

) z6 ?# D. z4 C: p. S) U' Y! k
to do-trust
6 `5 N; A$ t+ C! kset trust-ok False
5 U: o2 }  {* k  z7 J! H. K+ D
" p4 i" e- Q9 b6 M6 ~" i; S
7 b; O8 I7 Z6 ], y/ a9 d
let max-trade-times 0. b! Z  k# r  r! G% N# |& p8 V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  F& B) H8 h2 Z* P8 Z  s
let max-trade-money 0
- f2 m3 d$ y5 g" f# Rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( Y* }$ H/ y+ plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); c+ j; Y. n% [" x0 J- a

5 I: `1 G$ w" B( r3 a3 m
% u9 ~# P: V) t; d+ r
get-global-proportion
6 X5 q# ]2 d* C; d; _let trust-value
+ x  u- ?1 w% ?0 f  Z/ `0 elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) F6 T$ w- h4 uif(trust-value > trade-trust-value)0 F3 h% f9 u3 K/ r/ E+ H0 @
[set trust-ok true]
7 A! K; c2 E7 V! f) O3 [end" [2 s! N) m' k% m

9 Y) R% s. @* v8 U3 ^0 g( T5 oto get-global-proportion
7 F: T+ f% r+ A) t7 Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); H. h) K3 N: i0 ^6 H6 C
[set global-proportion 0]
! D/ ]5 k: F/ V3 s5 Z; p+ S[let i 0
7 M7 [+ M" W3 @6 w- {8 ^let sum-money 0* |+ _4 v& l+ K7 W$ K' \
while[ i < people]
) a" k8 n; `0 T% N& `[
6 T' V, P5 h* D& r, B2 Sif( length (item i7 }' `" B3 q5 H$ `8 y) Y
[trade-record-all] of customer) > 3 )

  n/ C$ `4 y  S1 W! g[
, q% K: H' M, O( rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 S0 o6 j' x; ^! L3 ]) H6 D; t9 q]
* w' h! U( B& \7 n  t5 @0 G* Z  r]1 u6 x' a! ]! G4 F% C  h% G
let j 0; R; f% A/ y3 x% S6 x8 C
let note 06 _7 v, a5 g3 {
while[ j < people]/ g1 m. O* G  s& a, D
[
/ A& n7 n6 u& q% i& Yif( length (item i; M! C6 x2 |/ u* q  N  l
[trade-record-all] of customer) > 3 )

9 V) Y) M: B4 h$ y1 ?, [8 j& ^[1 k( P9 D: I$ f( n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). r2 ^, h$ u6 m: d8 T  r# v: P( \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! e( h! N- u# B- K. \  l' P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 c  F" c$ U$ T& {3 p]' W. B: [' t' t4 }) l( D" p: A9 y
]
) f% o5 X* C2 f5 A- Aset global-proportion note1 y- _! L2 p& g" p2 F, v6 {9 @. I
]% j% P0 w: t7 \! z
end" `" [3 w% w+ `
& e. I9 f; ^' _4 v
to do-trade
, ?9 G  G0 R8 S;;
这个过程实际上是给双方作出评价的过程, J  d0 O! b# u' o, P! D3 V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 Z& s, t' u+ p) `) P8 m' cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; o1 Z* w$ k  b: P+ aset trade-record-current lput(timer) trade-record-current
% ]& @! F! J3 M) D. @;;
评价时间
4 ?4 i* n1 U1 o. ?+ \ask myself [
- L# h$ T# J9 Vupdate-local-reputation
$ g! G+ E# m+ X+ [/ Z) lset trade-record-current lput([local-reputation] of myself) trade-record-current' p3 o/ o4 S- @
]
4 N4 k+ t+ T; W: B+ zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 G8 s7 d) B; `$ F; l$ G4 v;;
将此次交易的记录加入到trade-record-one6 A8 ]% L# h. Q6 b- ^9 e" N* e; A% S
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. Q) p" R; k1 m5 I6 Flet note (item 2 trade-record-current ), A1 n  N2 V* W* H
set trade-record-current
1 O7 B" u- t) L0 }0 j2 N* d(replace-item 2 trade-record-current (item 3 trade-record-current))

! t) @9 S" b" B, O4 Aset trade-record-current2 i7 F& V; e, O- Z# h3 `+ E
(replace-item 3 trade-record-current note)- `/ [" `$ j1 Q2 }( G4 d- {) t

4 K# ?# z  P0 B4 b
; o3 m- |% R) T. g
ask customer [
2 f: S6 S" K' C. _update-local-reputation
8 ]! a6 j/ ^) I7 d, y  {set trade-record-current$ r# h: y! J: t( F; v0 |
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* o1 @( T/ u( b* ]7 B
]) j% D  b" o5 _8 f
( ^: u7 G2 W+ |  s
  y! C  V( W/ k; B* X$ L: v
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! ^+ M! T/ S  C2 [# J
6 H* j8 Q+ K! e+ M( K1 X5 ~& `; [4 g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' g+ L+ j3 z& u;;
将此次交易的记录加入到customertrade-record-all9 R. v) L% d4 X* V1 D. S
end
9 }9 e% f- ^3 N% t3 L& ^3 w& a9 g" e- Y
to update-local-reputation8 r+ h3 E. v" @2 p' C* Q/ s
set [trade-record-one-len] of myself length [trade-record-one] of myself
! n  l4 B# a9 k3 Z, h" ^) n" n2 _, \8 P0 l

5 v) ~" i8 [4 l! \6 G. W8 t;;if [trade-record-one-len] of myself > 3
# z& y- B: X1 M! ?! f
update-neighbor-total
6 |3 N+ u/ z9 f- i;;
更新邻居节点的数目,在此进行
! d0 z* q/ d' y. T% [let i 3; }" Y/ B1 W& N) G4 p
let sum-time 02 G5 J! G# C0 W$ t1 }8 x
while[i < [trade-record-one-len] of myself]
9 t( n; O  O3 X! V4 t% E$ ~[
8 f* R' J9 a0 G4 _4 C! rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 r7 ~. o7 t1 s7 H" p
set i9 Y# z" i. K0 F& E
( i + 1)
5 T4 x& w: p: Q. Z
]
) \) C* \! n  L, Flet j 31 r5 n4 B! z9 h- ~3 F1 s. u# [
let sum-money 0
7 e7 q7 L' j, @while[j < [trade-record-one-len] of myself]1 l' Z1 t3 P3 |- l" R/ M
[  n3 X1 R* M& j2 l! W3 s
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)
1 z# I  v% m; X' G1 Uset j! R% [2 c3 w; U
( j + 1)

; R. x9 ^$ b" e* E# ^1 @& c0 w3 {]1 V& Z3 q- Z! }2 l2 p2 ~1 Z
let k 39 r3 ~' N" s# n' P5 K
let power 0
9 x+ D2 ^+ y5 ^9 N" L. `  Vlet local 0
- }5 l4 N! U( ^$ y7 z. t: T- kwhile [k <[trade-record-one-len] of myself]
: {8 U! C- u5 f, K[
  ~9 H" ?3 J- a: eset 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) # b4 f7 s7 i3 m3 j* s: C/ |3 B$ D' ]
set k (k + 1)( r2 ~$ G# b+ I; V  H; `! m- W& g
]  F7 Y5 D5 E# s- e  U& E
set [local-reputation] of myself (local)
! `- {$ }  R) t* T" aend$ D4 D8 y) X7 q% s. X

9 M7 a  d1 H) g) P: i% S& u3 I% E' Bto update-neighbor-total
8 x. e5 g, r9 r7 z# X
( y2 G, T5 \* `3 \if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 k4 [( c1 _8 _" C$ u- ?3 V$ ?
1 F( Z. z1 b4 G! J3 Q1 H9 B4 C

9 s+ J4 Y* }0 S/ x9 n# n# E& Dend* I) o  f* t! S, n  H8 i0 b
5 q( J% `6 q5 r( @8 k  f
to update-credibility-ijl 0 m% ~2 k( d% ?  a6 n, ^
8 H9 N+ b4 N* 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。
* r4 ]1 ?" g6 S* |. m+ _. m) i2 z9 plet l 0
) D, g# k/ [* ^6 t3 @# H& ~while[ l < people ]
' I1 z- N) R  H8 Q5 g/ i;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价' h7 P1 R& |0 O2 e. a
[- P  Z7 m0 E9 }$ F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 ^0 b1 X- v6 B: Q% F9 iif (trade-record-one-j-l-len > 3)
/ b2 h; R1 _  X8 p" I  V6 _! 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- j# D/ e5 Y0 J7 j$ {% F
let i 3# [# ?* a" x! Y, A/ H
let sum-time 01 \, |2 d1 U/ i4 o$ k; R# p$ l
while[i < trade-record-one-len]/ R: y" Z( I4 Z7 a; [3 M8 A
[7 w6 r* c# O; ^- j2 Q( R1 F3 Q) o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 b& [2 {4 {  P
set i
/ X1 V% w! D( @# }. K0 ~- T( i + 1)
; I; g4 G+ e1 E5 Q/ r  f+ c
]! I6 I1 C0 Z/ z6 l7 i+ D
let credibility-i-j-l 04 A& b- j9 L0 ^
;;i
评价(jjl的评价)
- ^9 V( d$ k0 g+ Ylet j 3
9 x4 X% o) Q: wlet k 4
* {2 x/ j0 O. l- i# g! awhile[j < trade-record-one-len]
* p' J" [8 c1 b5 `- N[
- l/ C8 G' m2 z9 E4 q8 p" s% m% gwhile [((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
' a' O: m, e( U( O2 x& h' r9 qset 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)
" E; \' K& t( S& Q5 y; ?set j
, h( ]2 J+ h- z+ w( j + 1)

0 X1 K" W8 t+ i]- b2 e' J3 \( L4 i# u( G
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 ))% x' D: |5 X" `& \" I# q$ H
1 W; z4 z3 I1 b5 K0 H( Z: M8 o; @

+ A! S0 I- z. I' Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) \& r6 `7 Z9 J- V0 h;;
及时更新il的评价质量的评价* V$ y; `# W* e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" \3 q) n* q5 `! W& ^. Eset l (l + 1)
" }* n2 v- N- q9 j/ Q' [+ O% ^3 `], @+ e& E0 Q' G+ L: E8 P. j. Q) J
end% C1 t4 Q7 g0 R# V7 `

" `; T; K; G2 X, b7 wto update-credibility-list. W( t& A+ x) j) d: ]
let i 0
; O. m" k5 J/ j& S* D4 S7 G. A; owhile[i < people]
5 L) ~& j) s5 [9 }[
4 G+ I! ?6 i4 t7 |& ~$ b' z" y( zlet j 0
) e/ _/ t; h3 @( k/ s) Slet note 0
8 X$ E8 E8 ]2 W. H; y8 \) ilet k 0
6 k5 T2 M# l/ ^% g;;
计作出过评价的邻居节点的数目: [# x8 Y" H/ n: t) e/ C" V1 j
while[j < people]
: J4 h0 n8 I0 o0 M% K0 U[
& a3 k5 B" J, R6 U/ T6 @if (item j( [credibility] of turtle (i + 1)) != -1)4 u0 j/ h# `( g9 H5 z
;;
判断是否给本turtle的评价质量做出过评价的节点6 D2 X* {" ?8 a0 J, J, V
[set note (note + item j ([credibility]of turtle (i + 1)))& }& T0 X' ?! B/ E
;;*(exp (-(people - 2)))/(people - 2))]
* N: j# k. z" E; g3 l
set k (k + 1)
- c. m+ r. `5 J* a]
8 F! C8 _2 U) o: R  {set j (j + 1)
) C/ y* m* O( R5 D, U- _; {$ R5 m5 R]& ^9 x8 g$ l$ L$ V3 q; N4 O( ]
set note (note *(exp (- (1 / k)))/ k)# h: @9 |* B: H* k
set credibility-list (replace-item i credibility-list note)9 ?' k/ G  _8 m5 s! v- C
set i (i + 1)/ F8 X) z3 M/ u' q1 v. r6 i# x
]7 P: {3 Q% L8 [3 R+ I
end
- x2 j# [/ D. N$ c6 N) R- N% N
" w5 D! e- ~2 z5 B: W0 W" gto update-global-reputation-list* _; H5 c4 Z: D$ g+ ]6 J$ o
let j 0
  p3 ~5 d6 l! t$ ?$ R* F9 rwhile[j < people]
$ [* P1 ^  _& j7 q0 N/ }' ]: @[0 H. j5 S) H; W  R  L
let new 0  W' j5 s, }3 y3 b
;;
暂存新的一个全局声誉
! Y, D* s) u" q. g4 D+ C" Rlet i 0" i! h8 g8 |3 E3 H5 [6 O  |
let sum-money 0
; T4 F! ?. z9 Z/ W0 {9 vlet credibility-money 09 j! |+ i: b+ A# E
while [i < people]
  W5 ~, C0 a- M2 o) U[
5 _% O# A& r- M' H6 Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 d7 R6 K/ [6 B- n% o/ {- Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% w& a6 q* R$ E, S
set i (i + 1)
- X9 b8 p; Q) K* ]1 y$ Y]. T+ A: i0 ~. j2 R9 H3 I/ S+ [
let k 0
1 s! ]4 x( M9 H' [- Z, r$ I/ Mlet new1 0
- y( V2 c) C, T" s3 F  ]9 @while [k < people]
6 N% O5 k1 l* p1 ^/ U[7 p" f. X  R' G2 D
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)2 c6 t- t0 b; i; O) h6 J* L
set k (k + 1)* l! n, u2 B9 N4 `& r, e
]+ \2 k+ {  ^) D. Q- @5 X+ a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % r  n/ e( y# s
set global-reputation-list (replace-item j global-reputation-list new)4 \" z/ {: v2 m5 D5 o: |1 g1 U
set j (j + 1)
9 Q' e+ Z2 x/ X0 Q: n# i]
+ l) W. l( @3 g) c2 S) N1 @end( e* N; ^1 m5 w$ B! B- [
* y& I5 [4 ]  W+ M2 H0 V5 ^

6 I* u3 j, |% _6 e- f) p
, s- }$ ^$ ^8 W- t) ]; Q8 w6 cto get-color9 C$ k6 F$ q* f5 V( T+ K
  W" k% v2 g/ _9 i; c
set color blue
# Z3 r2 [$ k3 c. X( G4 W
end$ g! J, w2 h3 C4 N' X3 L0 D$ V

. ~3 {  c8 m$ q& Rto poll-class
5 e' @0 T; B2 {: |: I! h; D  u& S% Hend
! D0 b2 r5 A+ G: g( W7 k, u% `, p$ y$ K
to setup-plot1
1 f* f6 x; s3 E. m: S7 B/ S4 Z( _; a! H, r5 d( j
set-current-plot "Trends-of-Local-reputation"

/ a6 `3 f$ c4 c9 O, b! G/ c$ _$ N# V% Q7 u+ J' D3 v# L8 J
set-plot-x-range 0 xmax
1 x$ I: |9 C& L( T6 `; q& \7 T4 G

7 A# ^) ]5 R* Wset-plot-y-range 0.0 ymax
: M- i- M2 O- b4 c3 ]& |% G  W
end
  l! y8 c& b- A& T. D* D, j) G- _- ^: S" q: x) W0 W
to setup-plot2& t( F3 L9 c; u3 g4 A: s. n
% R( m" o) I. Y: f
set-current-plot "Trends-of-global-reputation"
& ?: I, ?4 x$ W1 c% h

. Y  e( i* j3 s3 [/ g( E4 fset-plot-x-range 0 xmax

$ ]8 B, c3 |4 c7 Q8 q* A9 r& \, `) i2 k& q9 |! W# F+ t
set-plot-y-range 0.0 ymax
! Z  i# z  x. r1 w
end
* i; ?7 P1 c. W/ j1 ]" K& B
. M& U% r/ Z# d7 y- {. G, oto setup-plot3
$ Z8 r1 I' c  j3 B$ N' i
3 D( W* c* @' [, V! w) h( p2 kset-current-plot "Trends-of-credibility"
4 I) P2 b$ k, S2 E- _

% e! K, d. e. T9 M1 Z" bset-plot-x-range 0 xmax
% u* n* k+ F% R$ s
# ]- ^. q8 L$ P1 {" q+ J+ \
set-plot-y-range 0.0 ymax

$ @) _: t# w1 B* \& R/ I: ]( I: nend% p& w8 ?( _  J8 @4 p# E  D6 `' I0 }

- v# Y! ~/ U% F8 Oto do-plots
7 A, X1 P1 w7 U" J3 rset-current-plot "Trends-of-Local-reputation"" E3 ]: p/ W  A
set-current-plot-pen "Honest service"
5 M; H- i  [3 m6 send/ I1 @( S6 K/ C$ ^* o

2 c( G" |- ^, ~' ?$ S1 G* \$ l[ 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.
! @5 J) u5 |: H, G: Y) h% a+ c. a% x: ?* t" N& P' h; g/ e
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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