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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:' Q1 d' V( H: p) h4 L
to do-business
" u" T6 q% l- k1 R rt random 360
8 r: m! a$ `( R4 k- l3 H/ ] fd 1
/ }7 J6 E8 M; G. s! a+ ] ifelse(other turtles-here != nobody)[" n# l/ o4 B7 K; c  \5 p7 q
   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.
9 ~) f/ ^2 U, q, s( i0 `9 m8 D   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ L" P- @6 u4 d- t% \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, |" s. m) [/ l& d6 g4 q
   set [trade-record-one-len] of self length [trade-record-one] of self0 o8 l# {$ I* a+ `) v4 v3 a' v
   set trade-record-current( list (timer) (random money-upper-limit))
/ |/ Y) l  o8 e4 @& j9 I- V# {
! g$ A1 [, r3 C+ p- R9 [. t8 G问题的提示如下:
3 ]% {! P1 Q" a  P3 O
7 t% }+ d# r) B/ }& J% S8 q4 Jerror while turtle 50 running OF in procedure DO-BUSINESS* S4 f4 t; [) X' [: i5 n/ u5 W
  called by procedure GO$ @) w; `/ w4 `
OF expected input to be a turtle agentset or turtle but got NOBODY instead., q6 s4 b1 Y9 `' [6 O/ X
(halted running of go)
' R3 L2 W4 k9 ]) h% ]/ H2 E# @% t' M# X. P/ q
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~~
: ?* m% r% [% y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
$ t8 G& M: Q2 ~, H' rglobals[
. c9 s) t1 ]( l+ T6 f% O* S$ G, x: lxmax
. [& C! _  c8 `( @3 W  X% ?- d& m: jymax( v  k- L  L) F" S+ j) F; @
global-reputation-list9 n: {$ O2 q1 v5 [- {

9 C' ?* W6 T6 D1 f;;
每一个turtle的全局声誉都存在此LIST) R, Z/ p# a. m: |3 b  z# ]- H
credibility-list/ G( `5 ]3 t2 o! P) s6 `5 J
;;
每一个turtle的评价可信度
0 K: q1 S2 K* E1 J& X# Ohonest-service
) X0 X8 L9 M6 f) w+ A) @" q; Sunhonest-service) u8 x  {. E( K& t, h4 [
oscillation* K3 [* D, M" Y8 |9 x
rand-dynamic
4 |. P1 G! U1 |" L! ], y]
  D& D+ N, R* E$ q) E! y- I; w. v% T4 y7 c! g/ {' `- I
turtles-own[, ^. B5 v0 p+ z8 d
trade-record-all6 _' J3 L) U- E1 t$ U8 L9 ?
;;a list of lists,
trade-record-one组成) Y& U$ k2 T, X/ _) f/ ?! E0 W' c1 B
trade-record-one
2 x' A3 Z1 Y$ K+ f2 G9 m;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) ]' y) r+ t& K
$ I+ [2 ?( l. s7 r8 `
;;[
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]]* Y. `! H1 ]+ P/ {! f- z* }
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]
, `* W; L+ {& x9 F+ Qcredibility-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& W2 W8 u2 v& u, h" J9 X' Q
neighbor-total* W  j1 |/ U; g- ^
;;
记录该turtle的邻居节点的数目8 E6 ~( t, c  u
trade-time+ {1 r. W3 I( d$ H: g. q3 d) G& ~
;;
当前发生交易的turtle的交易时间
$ I) _" Y" L: r" zappraise-give
7 R3 w/ Z; f/ r6 J' q0 ]. Q;;
当前发生交易时给出的评价: k) K2 Z5 F. C7 [/ X4 R- L. l
appraise-receive
, Z$ D2 I8 y+ ?& |;;
当前发生交易时收到的评价4 K/ B5 S3 o; o2 ?
appraise-time! b/ r! s9 G" X- d" O0 F
;;
当前发生交易时的评价时间: |7 Y4 J2 `; r9 l, E' v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 d8 W" }" Y1 d4 H4 D0 J. b
trade-times-total3 Z# x- l' u, o# _7 `; ~2 Q6 A
;;
与当前turtle的交易总次数
3 q" `) ^4 q, `& Y# i* }  P- t% mtrade-money-total
! p! \, |6 A* n8 S;;
与当前turtle的交易总金额" Y) f# u; d7 t! u, F
local-reputation
2 \, _. c. z  ]5 aglobal-reputation
+ F9 b* t- ~$ f3 ]credibility' w: u' ~0 g/ U4 ?5 h: \
;;
评价可信度,每次交易后都需要更新, i* g1 P" Q8 e5 c3 _3 n
credibility-all
( O% F2 x  b# X& _. Z* e+ }6 ?;;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
$ w& I+ f- x, T7 C6 j" ?( Z1 c
/ I7 G0 Z3 N0 P; W* h3 q;;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* _6 C# Z2 p1 l$ K$ ~. t
credibility-one
: @; X- Z+ [3 H2 `8 {/ G;;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  W& j3 F* O/ A! s/ h' c7 S+ I
global-proportion8 C0 |: r: X# D9 n# E2 o2 a
customer
/ |: }: _7 Q. R6 ]customer-no
- Y1 J) S% N3 }& J5 ltrust-ok
' b& L3 J6 j$ b0 Z+ x! ]  `trade-record-one-len;;trade-record-one的长度/ _7 H, E$ P: i/ l% A
]
; ]4 X# X& V: ?9 L, [% O$ L) B/ B. L9 D3 e+ G
;;setup procedure2 S5 b' D7 _$ [% x9 ^; O
, M9 S! R7 s! f8 R
to setup( q  V& t: }* n% i+ Z. B6 X$ x
* r* N3 g8 K4 m  X: e+ q
ca

: }3 Z5 `2 f" R( B3 J' X* K8 N* U) R2 D- f: M& S/ V, k
initialize-settings
) S7 _& A, n) a% P9 h6 Z6 r
# n; \1 k# m0 C4 A# F3 r4 d+ |
crt people [setup-turtles]
# e- N- ?$ g/ c; J& ?% }3 B$ F+ e
( v  E# K# [3 X8 h+ j! u" U
reset-timer
* g2 ?2 S6 d5 U$ K* \* ^* H9 L6 }

: ?' k' _, w' j- ]7 qpoll-class
* d/ P& p! j/ y

" G6 h* _: a* J% j  fsetup-plots

% K2 U$ I1 E, j6 s3 B0 j( V) I8 d5 ~" |& ]* d$ ~
do-plots

. R/ U2 p0 w8 m6 \6 R& wend6 t9 P7 R' X& A

) r% n6 H7 b4 Y! N+ Z" lto initialize-settings
4 s! T) b* b! o- n9 l
+ H" w4 N: Q, I& G3 I/ `set global-reputation-list []
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$ X6 T! E: h( ]8 q! {. w
set credibility-list n-values people [0.5]
- D0 q% a2 j4 L6 R/ D/ x

7 r  \  n" E; c! g7 p$ }set honest-service 0

# p: R! @8 u% U4 {: O" c) w( F) J: E" ?; r/ O1 ?- r% K+ X9 {* [7 u
set unhonest-service 0

: T3 z' g$ H0 i# V3 e$ \5 ]1 q
: I# F& E7 V1 e8 B# [# f6 n; T9 {set oscillation 0
. |+ ~* H  X1 C
4 Y1 }8 [0 T- O9 S8 O  B5 l
set rand-dynamic 0

9 W7 I+ z3 D* o# |6 p4 nend
5 p  W1 O4 G# j7 U& \7 d/ F+ x, [2 \% \" ~7 \/ Q
to setup-turtles * L7 a" f# ^) S) h, q$ F$ N
set shape "person"
+ g' v) L+ V5 Qsetxy random-xcor random-ycor
+ ]  c, k5 f8 K4 oset trade-record-one []
. x: r9 Y2 K0 S6 @  b" B
: H; V9 f9 `7 x; j2 T
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 `2 ?- N1 }9 d1 y' {  h
9 T3 g4 y0 P" P# r* K
set trade-record-current []
* p1 B* ~! Z! o( K0 }' ]0 I$ yset credibility-receive []# q- g  U1 |) e. T" O8 w3 H* m  `
set local-reputation 0.5
' P9 m" l! i( M0 G. Oset neighbor-total 0
( \3 N$ d, ~5 S' j- i+ o% ~set trade-times-total 0
/ j% G& l3 k# G0 |" W, ~set trade-money-total 0+ B, b4 K) r5 J% L
set customer nobody* @8 u2 d) ~; e; V* r  ?
set credibility-all n-values people [creat-credibility]! N9 S1 C1 ^  G3 r5 R$ z
set credibility n-values people [-1]
. u, f0 c! O" T; v+ a! tget-color5 V6 g$ u$ l6 K8 ~
7 `& p! h/ R! L1 q3 H/ L+ ^
end
9 R8 i6 t. Y3 t8 ?/ O- f' z; Q$ `, _3 u! F4 e9 A" M) Z
to-report creat-credibility
% b  g) {: E# F! C/ u0 Ireport n-values people [0.5]+ \8 D( A$ W; s, w9 J
end
# S% u! p9 E% }' L
2 y! @+ }" s) p! gto setup-plots
. d3 `; m" Q2 Z/ u4 }  J" j( Y1 ^5 r* I' K
set xmax 30
* H% d) C( d8 U5 j9 a

% a+ ^0 L$ q  l% E# }+ Aset ymax 1.0

$ c- Q) w' ^- O  }, I* q7 _, |. y& J; D2 p) T- q  t8 `* i
clear-all-plots

* _, N/ A6 O# j1 G. P/ p
% h" v  |9 ?; |  r, G2 Wsetup-plot1

/ r7 F- {; `4 R. E
, m; J7 b9 j. h( b( V' R- X. j( Hsetup-plot2

% M) l2 W3 o& ~& W2 R9 a  S. R2 J. N9 H# A; H. ^) b- N
setup-plot3

3 D- Q% a& r5 u  Oend
; N% v! H) m) g8 X' {: Y
5 d8 s# F% p  }1 H/ c" Z* j;;run time procedures
/ _! Y; q$ V9 G
: P! y6 s% o" j" V/ A8 H; i/ Eto go* b$ z0 e. ]) I% D& W- O( s+ u9 A
5 C* n& V" e, e8 o
ask turtles [do-business]
& n* \8 D& M, W# o) k- @5 w
end" O0 u% W, [: p& F( D

% F& |0 x- e" rto do-business
  J7 d0 s5 a- P7 \# ^. U+ l( b

% F1 t) S* F/ E6 q5 K: F* u3 Y% G& p( g- d1 X
rt random 360
/ V9 ~$ x8 g& p( Q. {' w/ _# h
6 j% ]5 \" l% W3 ?6 Q; v9 i3 n" b
fd 1

! c, G: f- P4 J1 c, v0 i7 K2 |! L( C, j
ifelse(other turtles-here != nobody)[

/ [! R/ }, k1 E8 t8 E8 q/ L) n7 f' \8 ]2 C- X: V% v
set customer one-of other turtles-here

; Z9 ^) ^/ Z8 S9 @  G
3 I/ ]% m7 Y) Q9 e; @;; set [customer] of customer myself
; D$ _$ C$ p  ]- t+ E+ f! c9 A

" o& L( n. i0 s8 N- Dset [trade-record-one] of self item (([who] of customer) - 1)
2 }. j* Q# {1 n" p: ?[trade-record-all]of self
0 g$ L: |1 {& H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 C. Q9 `/ O; s% X5 C2 r+ {* S  e

) i; n% S4 n& ?* vset [trade-record-one] of customer item (([who] of self) - 1)
& y6 l+ b$ [# h( `( |[trade-record-all]of customer
( T. {; V5 T; b

1 }" y2 q% k& ]( Wset [trade-record-one-len] of self length [trade-record-one] of self

% y3 O" E! t% C4 ]& p) R1 O
/ w3 s& ^7 q# Xset trade-record-current( list (timer) (random money-upper-limit))
4 ?% p- E1 T* _8 `* z& p5 a
& b$ s( N  L) o3 |* Z$ O* v
ask self [do-trust]
4 N- V8 n  |2 E7 c+ X0 P;;
先求ij的信任度& T. g) ^( a" r
8 @+ q7 G4 h' ?% f$ Q' j! I5 l/ d
if ([trust-ok] of self)
  Z2 P$ a* F; N2 j( P' d& x' K" z;;
根据ij的信任度来决定是否与j进行交易[; u) {1 t, L' U
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 U- l  p. G+ N3 t+ O) r% C, v2 ?# G* g0 q1 R
[

/ F7 l( s9 @" h$ F& D; s7 M, Q- _( F/ G
do-trade
* a1 Z9 Y/ m4 z1 o. I3 _
; e7 C4 z, m7 \, X! p' x% \
update-credibility-ijl
& A0 W9 f+ N. ^. Z

. S; B3 c( p3 wupdate-credibility-list! ?; E7 ~0 A  A4 z

. \; g: M, y( }% z
' b) m5 o! E) Aupdate-global-reputation-list
( E4 D& j) ~1 R" M
5 g8 j% {5 o. l3 C
poll-class

6 @5 x9 T- n% y" F2 n
7 |- @9 F& h) D' [* x2 O: b/ Wget-color

) _3 V0 ~' Z. |5 k9 w
/ a& }  a4 ~6 L( N1 v/ `]]$ _+ q$ s* ~" ]. W8 k" i. d+ q
1 \: o$ O7 N" }- u" j
;;
如果所得的信任度满足条件,则进行交易& Q- J/ X0 h4 k9 r; I7 _- d
3 L' o' ^: N- ~+ ]8 J* ?
[

/ w- F' f4 }/ n$ h. E+ }, t
3 Y( A1 P  p: `0 T( ~rt random 360

" Z- g9 o$ \4 `5 B9 D+ m
9 _" S5 o4 c% mfd 1
* ]/ C4 t* I% o/ d+ Y+ a- o
1 e2 z- q+ _* K/ y
]
$ |$ z0 r# g+ ^5 G; e
* S: f" W) f5 V, S0 S
end

& b: d- L0 F! V: Q6 c! w. `! c; {4 K
to do-trust
0 j1 B# V0 `/ |' s( f5 bset trust-ok False# J- W! Q+ F) _; }

# e# ^6 I& M/ p. T1 l0 s2 [
) D' U6 l* Y' U6 C" |# V
let max-trade-times 04 _9 i& Z* P# f% i8 i, g' `& n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ c7 Z. V6 X% L" A& @let max-trade-money 0
2 S- O, Z: j' H6 jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( E& Z8 C* ?8 d; s! Q5 _* |2 olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 k1 l( t! h' H& G: g
, J: R5 G+ p+ P

' r: j# B* x4 h( h9 `* V' Uget-global-proportion5 V. v+ ^) ^* K0 t# C: ?) {
let trust-value
2 `$ u0 q' c9 u1 c5 H7 b* d" X* Ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- a2 b7 ?. [7 j# t% F) z2 Tif(trust-value > trade-trust-value), @7 X' {4 W! |; P$ Q, w8 f) |
[set trust-ok true]( C7 z+ p8 N" }* y" Z* r$ V# T
end
2 S/ P; J! R! M3 D9 [) K
6 b. f0 |; F* e! s+ Gto get-global-proportion" b* K# O8 K3 f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). v6 p4 \$ o& d$ W2 [$ a
[set global-proportion 0]! Y1 q1 |2 r% e& [
[let i 03 W! U. q% u/ q. X- h, E. O% E
let sum-money 0, ]9 |. p& |( N4 o% G) t2 L
while[ i < people]
) m. J. ?- L+ J5 t( x  Y[8 |3 }0 o+ c/ m
if( length (item i
. u: a4 G8 I! T  U[trade-record-all] of customer) > 3 )

" M& S, v8 W0 E' N% J) V% U[
; V6 S! \( R. g9 Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ Y" [3 m6 ]) {]/ [+ ?. x) g+ Q. j
]
8 n; i5 ?! |3 I) B6 O5 clet j 0& {: @! l6 j) i/ W; Q5 z6 {2 S% R
let note 0# H$ g& k  C# G1 ]$ I
while[ j < people]* H' F: \4 o: S/ A8 a
[
/ G8 e" i( p1 Y$ ^if( length (item i& ^% l2 s5 i8 i2 n! s
[trade-record-all] of customer) > 3 )

2 t2 E1 r& Y& V: d8 Y, S- h7 C' t[8 {1 ]% }/ U8 X. E5 t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* i3 \& T5 X! ~& G* U$ m8 b[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 \1 T& |2 J" T- Y5 M8 M[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% |6 _) C4 y! }. u- J
]# h, L# e) x9 b% Y% T( T
]. C1 E/ f9 R) ~
set global-proportion note6 k, S6 j& U* h  @; M* b! ]
]
% J8 ]' M, G/ f9 _( d9 W; wend
- D! }% U$ {1 D+ @  }# c
" S. y* H% Z! Q! s. G/ V* U! Nto do-trade% s+ L  i" ?2 g
;;
这个过程实际上是给双方作出评价的过程
! J+ ?  |( D$ t- f4 k* yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* n: a+ _9 `) R, \3 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 |( ^( V) l( k4 i( S& {
set trade-record-current lput(timer) trade-record-current' d6 C4 S2 F5 y
;;
评价时间
' D. A9 l* n, ]) ]ask myself [/ e8 M  l5 a* `  ~- K: Z/ d) c
update-local-reputation" a- z/ A* U: }; M, c- i8 X& z0 r# Z
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 i2 Y8 R! H( u6 N  }* b4 ~( `]
/ o7 p& i2 D7 V! lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ m4 A7 K! o0 s; N& m
;;
将此次交易的记录加入到trade-record-one
7 H5 N7 ?6 q& _; xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 n; r6 _9 p0 A5 z* B8 Ylet note (item 2 trade-record-current )! H: Z) {3 m4 t2 B
set trade-record-current
" k: k. u5 k! |) B(replace-item 2 trade-record-current (item 3 trade-record-current))

3 S: S0 o1 s; w% v7 M+ H. Wset trade-record-current
' {. @  @# a4 j# g* ~( M- @(replace-item 3 trade-record-current note), M' `/ a  k* q# {
, k! @. P  @& m% Z

6 A! U3 B' ?! j( e9 A/ gask customer [( O; P7 P: S3 _8 s0 b8 K9 _
update-local-reputation
: f0 b" ?% [! \5 g: B4 B0 M3 Pset trade-record-current2 `, ]! z& S, C
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ V. @3 l" I% T) c  E. b* |]) b' R' |1 z8 ]! X: v
; p) e- b0 O) i' g9 D
% h% q2 O( \0 G' e( e: y0 q( ~' Z2 X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ k1 Z* s; i# D( H% \: {4 m
' e* a: }* N. _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ m  N: X/ c7 G5 W! Q+ _6 g" w
;;
将此次交易的记录加入到customertrade-record-all
' |2 p1 Q) G$ V, I) l- t5 ^end9 Z. @' |1 _* C5 ?4 J4 i

% c# c, }, Z7 k5 D- ?, G, `2 pto update-local-reputation
: ^0 S) M6 h4 y6 M8 jset [trade-record-one-len] of myself length [trade-record-one] of myself- Z9 Y: f9 U' n& i

0 U2 Y+ f4 L. g4 u3 L4 _3 D% I
, w! E, B8 o- ~9 K6 m: s5 S;;if [trade-record-one-len] of myself > 3

! P& N: q4 [; vupdate-neighbor-total
, W+ w1 ^4 n* P4 v) H  @. p;;
更新邻居节点的数目,在此进行; A/ N' k4 K& L
let i 33 R, |$ c- e, L% F  C
let sum-time 0
, T2 L; R$ ]6 |# }' vwhile[i < [trade-record-one-len] of myself]
2 |, [( H3 Z" ^2 d- X% q1 O[
# d9 P8 _) ?: u8 k3 }7 \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# z2 r. L/ f5 `; }7 o
set i
# I1 o* L5 b" W- N, t2 o* N( i + 1)

$ h7 {" @( Z8 B]& b7 `- O! b7 b- a
let j 3
7 F3 y; U# y- alet sum-money 0  E+ A2 g7 Y0 w+ `) J+ {) G
while[j < [trade-record-one-len] of myself]$ e: N5 d6 G6 @  W
[
* D4 Y( ~/ v. z, {) R; Jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( L1 {; [: e; R. A5 |0 ]9 F# w8 r
set j
1 _8 y2 S! t% ?1 T8 U8 V. P( j + 1)
2 ~% H4 \0 w/ N% T! w2 v
]
/ v0 N; d& O' K, Blet k 3" ]( ~$ N! U# ]( `+ o+ @
let power 0/ W( [9 d0 C  a* n" h. D
let local 0: Z$ e" P! Z. R$ u
while [k <[trade-record-one-len] of myself]" C) t5 N$ h# Z. r
[% g. r- n* V* v/ h2 ]" P1 W" u
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)   x& e1 g# X: r1 t- n+ ^. P. G
set k (k + 1)
; w* V4 z; C2 |2 K9 m]& C$ O  a6 ~" r- y
set [local-reputation] of myself (local)# p6 w2 n3 v* H, E* O. S2 r2 Y8 f1 V& _
end: B) n' ]  K6 f( s. P4 _

, H, U: ^) _% D4 j; Qto update-neighbor-total; K! i3 H! G/ [/ T5 _) }7 y
+ E6 p. z# G. L" p0 E8 `5 x) L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& u4 S7 c0 [7 {+ |0 G) h1 P  p
3 a) U9 R& @* r4 j6 k! @, t; T& V# D
. Y( m0 J9 r% L" k
end
8 m# r$ g6 v/ L4 f% ~
; O* f% l( L3 g" ]) S; Qto update-credibility-ijl ( b" f! A* [5 \7 v3 |$ N! Z

/ S) W- W/ `: ~3 `;;
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。
* W: p) g. d+ Ulet l 0
" Q! Q* m$ A; @4 q! B$ {while[ l < people ]
; W" N3 g+ N- }/ e. h2 x;;
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
5 z, z2 b) I, B* _% p* G! C[
, e! \  y8 w/ `let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ e  f- s1 Q/ T! qif (trade-record-one-j-l-len > 3)% W3 l! p8 ^9 D  l3 b
[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  C7 \5 Q4 h4 q4 J" E- U' ?7 t
let i 3
- L% I% z6 ]+ ~1 m) o( L# olet sum-time 07 D+ @& t( F$ t8 S. X, q& B
while[i < trade-record-one-len]0 s( v; v) d' ]# ^& j) [
[2 t5 a9 I5 D. R- o0 [" X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% u* X- G0 W2 N8 T9 T+ Fset i, F* B" O8 d, D- c4 O& d" q8 S
( i + 1)
: }0 I0 D5 @/ Y/ C' b5 f2 W
]
9 a# F0 P. C8 G" C5 t4 G8 @2 y- P  Klet credibility-i-j-l 0  i6 V; w  u" j
;;i
评价(jjl的评价). W/ {5 l9 G1 p/ N& U& d
let j 3) ?4 j) t8 F4 ?
let k 4/ u  b$ j7 k" ~3 p0 B% w- p
while[j < trade-record-one-len]
! c5 Z1 c" e6 d2 V7 f2 O- y[6 j! \/ w2 S0 l8 E) c5 [6 |
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1 }  `, v. f' N$ L; b' @
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
5 {! S7 T( D- _0 x+ nset j
7 `1 X$ z, S) r% V4 p4 l: `( j + 1)

4 H$ I3 q2 r7 X8 e$ M. e]/ y5 O6 p; V5 Z- F
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 ))" V) |3 q) E  U1 l+ }
  S. C% `& s% h
  J" Z9 F9 g/ k" J
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ [' F8 ]0 L$ W
;;
及时更新il的评价质量的评价
6 X  k* h! p4 O# }4 @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) \; N8 e; n" V0 u1 eset l (l + 1)
0 Q: c4 F) }" r6 V! E3 []% _* _' d: Q1 u, @
end$ Y6 z) u" W7 j% ^  f8 f
) b8 }" `6 v% c  q; a
to update-credibility-list5 {( Z6 T, X5 U4 m" P6 s/ O
let i 0
5 P8 z+ i1 O& n/ B$ B1 Fwhile[i < people], D* X$ Q& L6 h2 P8 y
[) e4 e% J- [" J5 I0 _1 r+ I' L
let j 0! D( L; B( i4 b6 d0 c4 G! s
let note 0
, H0 s& b2 X  }" t! L2 m" p5 slet k 0$ H% [7 m% {8 Q% T; I3 d
;;
计作出过评价的邻居节点的数目- q4 n9 {2 g) R+ t8 b1 ^* E" B
while[j < people]
+ Q$ d8 g6 S$ k[! |% O! y; b; L. |" n
if (item j( [credibility] of turtle (i + 1)) != -1)
9 E) F0 ^2 l9 S' `7 k8 T3 Q3 `;;
判断是否给本turtle的评价质量做出过评价的节点' n! p( D& K+ G; L& w; w. G
[set note (note + item j ([credibility]of turtle (i + 1)))
1 ^" _( L, x( y;;*(exp (-(people - 2)))/(people - 2))]
) F; L. ~! k' g+ u& l7 U+ X
set k (k + 1)" [2 ]5 f0 z, G- r
]) z  D9 {! h, V( `: i
set j (j + 1)8 Y3 \# A; P& @; K" T4 f& ^
]
) N# v, t& M8 _5 [' a% Bset note (note *(exp (- (1 / k)))/ k)
/ t8 g9 N4 U; J' H/ jset credibility-list (replace-item i credibility-list note)" m! j5 V, {' z# k& h8 i
set i (i + 1)4 ?5 f& c$ C) L# v& l
]) U. f$ {; H  J2 ^# H4 D
end
! k2 n. G4 j4 Q2 Z) X# n& z
# i, |( X1 ~$ H/ _4 K4 j$ Cto update-global-reputation-list! x( o# z/ M+ d% }" ~( T
let j 0
$ m6 k$ O% l: Cwhile[j < people]
) B3 D! z4 ?4 k9 i& B/ i2 R# Z' f6 e[- @6 I6 m8 @4 e3 w  Z+ J3 O
let new 0( {4 y6 |7 G' x; X& J9 A
;;
暂存新的一个全局声誉1 N3 ^% }7 P) l9 L
let i 0* N" _. B; B5 V8 [9 ^; q
let sum-money 06 l- S+ {8 \/ f
let credibility-money 0& f6 K' S( y  G0 w2 J! e
while [i < people]
% i7 L- y2 K! _) H6 v[
7 L; e9 p& ?$ n) i. A6 Qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" C  A- _, [' h- i. A! A3 Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 o1 [; b& v/ A: Qset i (i + 1)
) [9 Q7 N+ |+ r/ b4 n0 k]  f5 @4 H% u( w2 V+ t6 E' Q) O8 J
let k 0: t/ Q* g) F, _
let new1 0
; \& a1 H$ S) I/ w4 Pwhile [k < people]
' E3 \- C. Z4 O1 d$ I[  ^* b7 i/ ^$ t* {$ F  H# P6 C
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)9 V  U% m1 b. G% l+ ]
set k (k + 1)
5 [4 c* g, X; U- A, }! P]$ b' |" W  g" a7 H5 c
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 Y5 n8 j9 R0 N* E9 \0 p9 J* Pset global-reputation-list (replace-item j global-reputation-list new)" }0 _$ O4 E  X/ X$ h1 x' s1 z" p
set j (j + 1)
: I9 l/ d2 i5 S]
$ }3 X" `6 j+ U! q1 b' r7 d1 Tend
( q! E& J* k3 G# e* y/ T) s8 d) C' k  h- e3 k
0 |' o3 }( H+ y0 p& L  |" r
" w3 ~: n. I6 v& s  G
to get-color" `; E+ i$ a' B, G/ l9 U
7 k* @' S# U7 ~6 u* ?2 M$ [
set color blue
, S  E  a* `) p9 Y
end2 |/ N! o% n9 v0 }* i1 g

7 h2 \: S3 B5 [7 z4 x( I2 Rto poll-class
+ |4 p0 V# j9 u2 aend  _6 Q5 X& g6 [5 p2 r: L/ s

; R% U% w7 A7 \( x# kto setup-plot1
9 @) T7 i0 b5 y: e8 Y$ o
( G, [  h$ {9 cset-current-plot "Trends-of-Local-reputation"

3 B9 t! l: m) u1 I* e  k# R
8 p. Q1 F. K# i3 J/ nset-plot-x-range 0 xmax
% u) R( h6 u) J' H% {

5 N- g3 {- u6 a- z5 ^set-plot-y-range 0.0 ymax

+ ?. V1 h/ V" x) R; |end' m4 K9 S& a/ P# B! k5 J* F7 Y' Q, f
1 S9 }; y: z# _
to setup-plot2
, P7 W* @7 p# V; r: c* N. D4 v
& K9 t# J. u8 t3 q( C  @7 G2 z# uset-current-plot "Trends-of-global-reputation"
( z1 r; S7 q8 U: M2 C: P

( i0 m1 K5 v# R' T1 _set-plot-x-range 0 xmax
) W3 U' z  _2 F7 }' h5 ~

$ @1 {/ s3 T0 r$ Y; ^set-plot-y-range 0.0 ymax
2 n+ l4 q1 I3 }/ |( s% N. ~
end$ J7 U( O0 b5 Z2 F& k8 R  J

" i% N  m/ c) D" g* z: h7 H4 tto setup-plot3
# d/ m) p1 y: Y7 T" @3 v3 y3 B9 S, |9 s7 i0 X
set-current-plot "Trends-of-credibility"
( }8 Z" q- ~, R5 q

2 W& @; F9 o! m9 k" g2 @set-plot-x-range 0 xmax
9 x2 O( w2 q9 b# Z' w

0 V* |. W* o: Dset-plot-y-range 0.0 ymax

" W) T* {- A. g$ hend" a, v8 C6 a$ r, `% H' l2 D
* A% ?% K" A0 ]7 N8 K; x5 n' O( p
to do-plots) v( z) S0 C) N# s1 A8 d
set-current-plot "Trends-of-Local-reputation"( t% W# J' Q, K/ `, b. j) v
set-current-plot-pen "Honest service"
% c( W: r+ Q3 j6 Uend
; Y% E+ R8 F, \$ k5 @- J  t' {  U9 t' q+ @% S3 M8 |8 E1 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.
& A7 J7 D* H3 n
; r( Y0 K+ B3 {3 M' c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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