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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:) g& k+ p0 c. q+ |! d; h: S
to do-business
; r7 R0 x  q; a! |1 i! D, A rt random 360, }% T* _6 z2 z3 v
fd 1
& \' \- \1 _1 }9 v5 h$ _ ifelse(other turtles-here != nobody)[5 H+ @6 Z; P, I
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
5 l8 ]  c) O% E! O0 I& U5 P   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % |& g/ T. [+ x( p5 U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 S0 I* q  h( [7 q   set [trade-record-one-len] of self length [trade-record-one] of self
/ d' z3 r8 I, }. j* A   set trade-record-current( list (timer) (random money-upper-limit))% y$ v6 ^. M! O1 m: r
# |' A* N1 r. Y4 Q
问题的提示如下:
* e/ n0 O- }$ I8 i: b4 e  [5 X" M$ Y% V0 v. i# B; `6 h6 z# n9 e
error while turtle 50 running OF in procedure DO-BUSINESS
* g& T/ z1 z$ w' K0 V/ d  called by procedure GO4 \! W3 x. D3 l* Z6 ^  y3 }2 V
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* O: k) J. u9 y
(halted running of go)
1 n, J9 u" p0 r( J7 Z  z+ Q: x. j& @
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~~
. T5 o1 a# U5 W7 c" s/ X; E: d$ v( Q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* I! ]* y/ b! Q( r9 p3 S! i. i
globals[1 R: F. ^: F/ y% _2 C
xmax
, I1 R- c! k7 w$ Q/ }/ e( ~8 ~; rymax' \$ G; M8 _% x1 N) [4 J
global-reputation-list' J1 f2 V, I+ R) s7 ?! y, N$ E
5 t/ w: W0 n% ^1 a& A$ D1 e
;;
每一个turtle的全局声誉都存在此LIST! Q. j2 q( A% P: s& p6 e" ?
credibility-list
; u5 V2 ~) z! A1 `. S5 H! P;;
每一个turtle的评价可信度
/ p! E0 q3 h, L* ~2 Zhonest-service
3 J% w0 P4 t: }$ |$ _+ J5 xunhonest-service
) R$ U6 z" u$ G) H' Roscillation- \' U* S. M* H% t2 V
rand-dynamic
& h" l5 W6 ~7 t  H% T]
% t, g/ W, r' S" |9 I' M
+ d% u1 q5 E3 Mturtles-own[
& w, H! h  M3 L% M; Q. btrade-record-all/ k% b# @6 j9 \" A/ m) i
;;a list of lists,
trade-record-one组成
, z" N% N/ b; T3 gtrade-record-one
: z/ i" `8 K5 @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  o- ~! `; b; G. x; M3 W! n

5 U! D0 {( J) L. t, y  b+ r;;[
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]]
* }& O& E4 V5 _% [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], m. C( O3 M. w& r3 ?0 _
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( d, H- s" vneighbor-total' b) m6 j7 m# `. b8 l; B- \8 t8 Z
;;
记录该turtle的邻居节点的数目
+ Y& D/ l, b5 O# \% htrade-time$ H6 n. ~8 Y* ~6 S8 d4 T
;;
当前发生交易的turtle的交易时间
% i7 y4 w+ C( Z: `0 Fappraise-give( d" W% L9 o; {. h$ D6 t4 G( x) G
;;
当前发生交易时给出的评价
! m, b( a9 f1 u% W* @8 y" N; ^appraise-receive
3 T9 g' n  \! Z4 Q- V- Q2 z, N;;
当前发生交易时收到的评价$ Y9 q, W3 r- [& z
appraise-time
# y1 b6 [4 i/ ~/ S# ];;
当前发生交易时的评价时间3 n1 H* _/ W+ h4 c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ j# Y7 K& w8 |  z5 }trade-times-total
* J5 U/ U1 e! \$ j0 S7 E# F;;
与当前turtle的交易总次数
2 C; `* h* e! l- Vtrade-money-total
) p3 z0 P8 }3 r0 c2 O. x1 C;;
与当前turtle的交易总金额' ]( j8 Q- ~) q2 b
local-reputation
& Q0 F" \; a( ^& G, v) f7 I  B7 Rglobal-reputation+ @0 E0 D" m- N
credibility
0 c3 T6 q$ ~4 l;;
评价可信度,每次交易后都需要更新
+ h, Z; Z) O/ k' M( Q% |/ u9 mcredibility-all& n( p8 b* Q4 t& q, m* B
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
# ^: V; A+ Y! @( a7 S9 h3 P8 n7 p( }/ q! |: p
;;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
( M# T; a1 \# ]4 Y8 g" a% ucredibility-one
! @7 w# i; ?/ q;;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
" G& M4 }/ g* [, I4 ~9 ~! o8 j/ R. i. \global-proportion
0 F- e4 ?& E, V& Q( [customer. A; b( K: D9 k: ]0 G1 M; t5 o
customer-no$ l* B1 K7 f5 V6 l" _0 y( U& w8 `
trust-ok9 A2 ?, U7 \; B  l
trade-record-one-len;;trade-record-one的长度3 z- N, R7 F' ?+ k( R5 o- p9 M
]
/ x# j4 M! v9 O$ f8 _. v7 a5 `" Z3 O% Z
;;setup procedure
/ O* b6 K. a7 n! |
( b1 N  a8 }1 _7 }; nto setup# G. T3 J% ]" K( w0 {
, u+ D3 T5 O4 @( O. D
ca
+ |5 Q: h  t* \3 y' E

3 L7 W9 ^% D$ w# }( n" oinitialize-settings

$ l9 c; \% C7 |+ m4 p0 k+ v
8 X4 L# O2 P( P' Y# y  Dcrt people [setup-turtles]

+ ?" [' o6 H; F4 W; @, Y5 v, ~& j% N) w* b3 O
reset-timer
! W  I% h& K; d  Z
' O. d0 t8 b/ O- z
poll-class
, b. h: p4 v8 w

$ g; t: I. ?0 F' t) {" j! j9 W% V# qsetup-plots

* m" ]/ D& P6 ?- _$ y' {; t/ h% ~; \% h
do-plots
7 [& B0 _+ B, _8 x& n9 M
end
1 x9 u" J  a( L- U0 @+ f. Z* a( S
to initialize-settings
$ r( L, d9 h5 B
- p/ R7 i) g) U. [# P8 }2 Mset global-reputation-list []
8 q) {* t+ @& ~5 C# W
5 |6 s6 m3 C$ n* t4 {
set credibility-list n-values people [0.5]
, a, U7 o  k. y/ o4 e: |3 m
$ Q  B; W$ M& F
set honest-service 0
- I& O& F& }) F* K

1 s& ]7 h+ M9 e3 Iset unhonest-service 0

2 ^4 c# c0 M# T2 I8 {, D0 g
7 X( L# A- U5 x% c" eset oscillation 0
4 s# o/ e; Z5 M2 M% V

5 w1 h: o9 w5 t0 Oset rand-dynamic 0
  |# p4 G! z5 ?
end
4 K4 T: u  m7 J4 K* `3 g. @
8 q/ k  \, P- h' ~  bto setup-turtles * A; w/ P% s. {* I
set shape "person"
, Y. B, S2 K" q* x1 B7 }; `setxy random-xcor random-ycor9 S/ n7 e, v  Z% {) W# k
set trade-record-one []' L. N- f6 u0 V3 `' ?

" z2 n* D& U; I8 A9 iset trade-record-all n-values people [(list (? + 1) 0 0)] * t1 }0 q5 q1 v7 n
& G4 e  h/ ~; }
set trade-record-current []
% W+ d5 J: _* \. o5 k! {' E# X& hset credibility-receive []; w% H2 U. [* I4 {
set local-reputation 0.5
6 v* W1 U/ M/ v+ Z* ^) N9 {; ]+ Y1 @set neighbor-total 0
9 B6 X7 f! P6 U0 \, ^5 gset trade-times-total 0! n( v+ m5 {  c) D$ F) v1 c
set trade-money-total 0% R* }6 R- o7 @4 {' E
set customer nobody
3 m" Q. M0 e! @8 L4 Rset credibility-all n-values people [creat-credibility]! A& t3 X; s4 h! q. i4 w
set credibility n-values people [-1]
+ ]6 y( x# x7 {8 c- W. h/ `3 ?get-color
# ]6 i- t! V5 H5 \8 c- N3 o

0 a# w* o- t8 P9 Tend. d; F2 y, o' G
$ M  k4 |! R2 {% @
to-report creat-credibility
5 H/ S% c2 {- M! z, _" hreport n-values people [0.5]1 ^( H- p: \! G
end
$ C/ `. r9 {1 n" V3 y6 Y. J2 p5 L" V
# k" Q4 V) s  K4 K( oto setup-plots
$ U7 D0 F3 j. q0 [& ^) X- P; A! t3 |
set xmax 30

7 V5 z1 q- N8 P2 v5 W8 M3 o- I5 ]. Q' Z4 V% `7 _
set ymax 1.0

6 J' e2 L9 J- q0 m) x
3 y3 S8 j+ _: p+ v; e! @  q' qclear-all-plots
4 d5 E  ^( Z, [

$ G3 _7 X  g, a) L+ o' psetup-plot1

$ t& ^' @( p' Z2 }+ F* H
/ S2 p. k! y! F6 f' Bsetup-plot2
! m/ `1 |9 C3 L: g: |/ H; Z

- W( P, d. T8 [# i' a( Wsetup-plot3

/ M' @0 ]) w! v. x- V" p* Iend
8 v" W  o5 i9 \5 a5 Y; p
& Z, K2 P1 a% A;;run time procedures
8 b6 u- c3 c4 n/ Z
: F' U  h! T& G: Y" {: [to go
5 }2 [6 X3 N5 p: e5 U3 h9 }, s; n0 Z
ask turtles [do-business]

' V. }7 n6 X6 d# f3 o! M+ Yend9 g) _5 s" }, C0 B2 a7 l2 v
5 ?' B# [& V, }5 o% B: x. Q
to do-business , x* ^  Y7 e# {$ H
5 o" D7 C, Q. Z, e  Y
5 T& U5 X$ E5 Z
rt random 360
. g4 s! k- E# Y8 _

+ s/ N6 t7 {7 \2 F* Y+ h* xfd 1

) D! x6 R+ d& O; Q) k
) d" o4 K# z, S  R3 u5 v& _, ^ifelse(other turtles-here != nobody)[

+ u8 N9 Y3 P$ s0 X% b+ _4 H/ c2 m. h
/ Y5 C' p2 r% [4 L3 Eset customer one-of other turtles-here
6 \7 K: ^' ^6 [" O

& s) x! G4 Y( {;; set [customer] of customer myself
9 A( s. V- ]" n/ d

4 L( ]( U1 k" o: @3 G" |  Y; ^set [trade-record-one] of self item (([who] of customer) - 1)
: Q3 D, w9 M* a3 ]. q! Z[trade-record-all]of self* c& j! o- b, S- K' P
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. ^7 `- A' E  V+ K

5 r+ N2 d9 P' D5 R( Nset [trade-record-one] of customer item (([who] of self) - 1)+ {+ M9 K0 R+ F$ n5 B
[trade-record-all]of customer
6 l# G2 ?! h% P/ G2 U$ t
+ }0 E/ A& j8 Z( }: b6 n- H% X
set [trade-record-one-len] of self length [trade-record-one] of self
2 t7 W, v( L$ a/ T+ ^; w

) R. V. [$ R! o) u* }set trade-record-current( list (timer) (random money-upper-limit))
7 K( p6 ?4 p& k; ~5 F
- _0 Z/ R3 k" I8 Y" @, l
ask self [do-trust]
. }' C/ _' ]) Z" o- }3 Z5 P2 ?  {;;
先求ij的信任度- l6 w) o- m! {. k

+ R8 N5 k* n+ Q$ i! k3 zif ([trust-ok] of self)# C, P6 P* z$ d. A" @# \
;;
根据ij的信任度来决定是否与j进行交易[5 B/ V+ r& m: R* q! N
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' S7 A, {& k: `9 c

& u! i  e+ J6 P# e5 ]; n[

. B" N; }0 N) s% V. y; [% Y, c4 x/ W: Y
do-trade
4 Y) L6 {, u+ e) \8 y" n

  P. j  O- J1 G/ k4 rupdate-credibility-ijl

) m% n$ h/ i+ Q" s1 p" c  ]( i% Z! Y! S
update-credibility-list
( t% b( q1 Z% v- c1 y

% ~7 Q/ O5 I- ?4 [& L6 a' U& ~  K  b! s, I$ Y: @
update-global-reputation-list
9 G2 R; ^% S7 g& C# D; L* s

( x7 W  ]  h* tpoll-class

" \) [4 f& p8 M2 B/ O. |( ]! j& t. {% O1 D
get-color

: J  H' x4 k2 j5 p1 k, U6 |; o6 m# u6 B  y: G
]]0 Q9 r5 }, a( L* ~* h1 m" r
9 P# }4 |# h5 N$ ]! q+ |
;;
如果所得的信任度满足条件,则进行交易4 }0 T  X& U9 L' \- P5 t  E- N
* N( g; Q2 L. k3 C6 p4 x
[
) p) T6 @+ _+ p& [! a

( R1 s% Y. R0 J" b6 s' ?! D' U* urt random 360

8 @) T5 C, n2 ]; W4 ?, b
/ j* S+ `, Z2 X4 q, dfd 1

) H! P% G9 T' j6 r$ v* a/ {9 h3 a
1 i2 M2 a' t  n]

$ z7 h. L2 p4 ^1 E0 R$ o" ]" n/ \
2 W' ?- j( u+ iend
/ A9 z- D+ w7 e( Z6 P( z9 Y- q" a
- o5 ^9 ~' t. ?
to do-trust / H. A; |5 ^! O% a
set trust-ok False
5 q2 y2 I( b. ~: U
2 n0 G3 F. g# ~& G! ~

9 S. Y; n2 w6 g4 B6 Ilet max-trade-times 0
& l- F( t$ m7 W1 Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. }% b3 f5 O( E% v; m
let max-trade-money 0* P/ C+ G- W' Z: Y7 {9 c6 S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 c7 I- c# @  i7 z8 Z9 @! hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ k" k$ g8 h/ T5 e  j+ _; p
* {$ X+ G4 G# A8 p( W5 {, Z( l
1 J% t; m: f$ \3 w  i  ]( Q# x( B( l
get-global-proportion  r2 d, k% |+ T* |% E1 w# ~9 u" n
let trust-value3 U  f) m& w4 q0 V( Q
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)

7 u: C2 G/ a$ y$ K2 aif(trust-value > trade-trust-value)5 u8 i9 ]8 p! `* ^) d) ?
[set trust-ok true]
/ K) t% k$ Q. p! Rend
4 L+ W) [- \; H' n' F
. T7 y, I  N+ s" A, B$ G& K. \to get-global-proportion
* g2 M" D2 Z5 o& f- iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ L# Q" |8 h" k/ C
[set global-proportion 0]: m( c7 T0 P0 n) g( Z" E( U6 _
[let i 0
" f$ L4 n9 j/ \$ i, [9 R5 W% qlet sum-money 0( Y7 w- D) M; D! A
while[ i < people]" k! S' J) R, X+ b
[
5 R+ Q6 x8 O; G- V+ Bif( length (item i
. N3 r: T* e+ ^& K5 i0 g3 }; H0 W8 v[trade-record-all] of customer) > 3 )
& j. R# v& `" Q( k( h
[2 h5 U: z* s  ]+ D% H( {( S: G
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 y, }0 A1 C  X! L% O
]: x; K; Z, L* X" y0 i
]  k- c' J# t5 F' [) r6 |, _# G
let j 0
+ h: B+ r4 `% r6 \" o5 |/ M& J% t2 [let note 0. ]/ T7 I4 Q" g% s* C6 m4 y$ K
while[ j < people]8 \* f3 ?* V) N* {3 l* j; ~4 ]+ ?
[
  m% L8 ?0 j3 {) c$ W  g" M, e- P- @if( length (item i
) B2 k) Q+ `% f7 y[trade-record-all] of customer) > 3 )
: h2 q4 q) o+ G$ V: M9 E, ^
[
1 @& H" x5 l- A1 Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. n+ [8 L& `) ?( J5 p: q4 R/ F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 S5 T1 d2 J& @) |8 ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 f, ], `9 j& ?! A]
# n8 ]- o5 M3 t' x7 C: P$ a+ \0 l]
6 Z# T! K9 k4 Z0 E. G4 z( y, Sset global-proportion note' V/ Y$ }, H! Z! \, T! ?, {
]( r' _8 v; |( x; x" v+ C  F
end
7 Q1 P- S% y' F& y: N! X& V: e  n! E: v  y: w/ k7 x: i
to do-trade
8 h2 H: x" u+ X1 y; s5 K;;
这个过程实际上是给双方作出评价的过程, e: |7 q7 Q0 h( y. w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" |- v  p* D' V7 \5 I( h* [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ j$ @' h7 \  c; P" E- O" |- h
set trade-record-current lput(timer) trade-record-current8 V0 k  [/ u% g
;;
评价时间
' ?6 [5 z7 y6 e* J% O- Q( Yask myself [
% X0 c4 d9 w) C+ v. G7 C5 Y5 d. @update-local-reputation; s$ N% n2 k3 v4 Q; v* d7 X
set trade-record-current lput([local-reputation] of myself) trade-record-current
% r* J  x: b" }3 B, m$ t]+ C$ \9 I( j, X/ J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 ?( s! y! L; A7 k+ R, L6 \;;
将此次交易的记录加入到trade-record-one
- S9 D: A- l, K+ Z* Lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' o' C! l6 O! F# u7 j7 P
let note (item 2 trade-record-current )+ ^7 i% q  E9 z9 |
set trade-record-current
; [/ [3 v  c) e$ p(replace-item 2 trade-record-current (item 3 trade-record-current))

) g5 D" Q7 y5 }6 Bset trade-record-current! f$ m$ i0 Y' ]" J% i
(replace-item 3 trade-record-current note)
9 n, f: ?% Z6 v0 A; s/ u* N: s3 ~5 a4 H- @, g  X: }
  }- B# |4 r7 i4 ]  t! u$ C
ask customer [+ r: U# n2 a& T! H
update-local-reputation
" x( e2 F6 L7 p0 e" xset trade-record-current
* D( l# n  e1 d/ D4 g, g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, {' M0 T4 v( d. o- w$ M
], A; o* o; d( o# n, ^3 y

9 o3 ^5 H2 Q2 U# {

' o5 U- H, k" U- e# a" K1 l1 \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 J' l9 ^* X) |8 i* D

) b( \! @# j5 A4 sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 A& R4 @# c4 ~8 P, J0 U;;
将此次交易的记录加入到customertrade-record-all
7 J! L8 U( _; n% b# zend
% B$ \$ g- }! y! R" ]" F
, i% Y' a' q4 h0 B! f. q' M1 Zto update-local-reputation
1 N" Z+ U  k/ Z0 l- @4 F/ Oset [trade-record-one-len] of myself length [trade-record-one] of myself" x/ \0 K4 B1 y
. q- ~0 Z" _4 E  P: _8 K) Y, g) H  R

& m9 o3 J& t2 J0 j) o;;if [trade-record-one-len] of myself > 3

  V; u5 H6 V6 e6 {* X, dupdate-neighbor-total
) F1 i; E$ _5 P: F0 A2 K;;
更新邻居节点的数目,在此进行* U9 Y! ~* |+ J; B1 i" z
let i 3
5 ~9 R2 i- b1 k6 c8 Jlet sum-time 0# B* K) I. ?+ B6 Q. ^- E7 {$ J5 W
while[i < [trade-record-one-len] of myself]+ ~7 `% v% r4 n, v# H; w  d
[+ n" Y+ r, q$ N$ w, U
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* @6 T1 v5 A, J
set i
: W# ~/ j  }' k7 z( i + 1)

% X9 \" O) t" P$ t4 S]3 K" u7 ~3 W4 k/ O* W
let j 3
9 d/ N' j. Q5 v: u( o! \" vlet sum-money 03 P2 w5 T: ^+ N: ]# u0 D
while[j < [trade-record-one-len] of myself]
4 x! U! R9 I  q4 H: T* [9 i+ y[8 B, D" y* ~2 p* [, f, C4 w1 m
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)) _) Q3 c  R. U
set j( V3 D7 t4 o! B0 H% q" N! p; \' {
( j + 1)

: A, J8 H$ x& u2 U" p7 V1 G: r]$ B* M1 ?- j9 x  Q/ M# h  s
let k 3
# ]1 C, Y" X. k; s8 d* E& K( ^" slet power 09 Y) Z. I! Y0 j" u3 [# E* w' L
let local 0$ ]7 a* n6 @; C" \1 ~
while [k <[trade-record-one-len] of myself]
* _6 T' j& |5 u  f. P[; I1 W( g! d8 P) G, b
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)
% R. {: @; p. J0 Z: d. ^8 m7 Xset k (k + 1): T. K! |0 L/ t' S, N8 L! I
]6 Y7 p( e# V* n
set [local-reputation] of myself (local)$ F# F0 r( [% C9 k% P
end( ?7 c) C5 Z/ A! j
0 j  r; A  a& i
to update-neighbor-total( a: e, N# E/ e
1 n5 K. @$ Z. b) s' ~4 C  X- B. R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 O5 `$ e" i' {5 ^0 S' s" |
% t* J5 N$ K. p: }9 I

$ u& _4 X8 X6 k5 u' B! Pend. U+ H# g- @4 M( T3 O
6 L6 ^% X; C7 ^" W" n2 N6 x8 a
to update-credibility-ijl
5 X2 F! v8 ^+ A7 E
# z, g+ [6 f7 @# o# l; H8 t;;
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。
8 E! H! l# \1 M4 ]" O! L) xlet l 02 v; U8 A  k+ \/ n
while[ l < people ]
. y% m! G" ^2 B. r% X9 w6 };;
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
2 k% k7 Z5 d5 D7 n4 m[
5 q' N: f- v" N( ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 t+ B: l( _7 @$ }% I* u2 zif (trade-record-one-j-l-len > 3)& \0 U. E6 f' r6 @
[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
( u# z' z1 G  R  P- Nlet i 35 @9 _! d: R% }, j: n
let sum-time 0
- x& V7 p% d# Swhile[i < trade-record-one-len]" I$ H6 _% D# j' y3 i+ q
[
- [6 ?# g, [0 I+ K$ _  ?set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) X. O/ M3 M. E/ h" H, I$ Z+ o& O9 Bset i
$ k( u' h0 B4 e9 f- T/ E6 I/ [( i + 1)
, M2 l/ H/ ^% C# w
]
! S3 l0 {* Q; Q/ I# nlet credibility-i-j-l 0' W7 Y& _( r- \' ^
;;i
评价(jjl的评价)
! U- W& A* G, \1 slet j 3
0 R  a# y  J; olet k 4
0 e: X% a8 B9 f6 n/ B( N7 Zwhile[j < trade-record-one-len]. C% ]8 f4 ?2 @8 q4 y
[
6 P7 M! g2 G- q& e. rwhile [((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
: L3 `4 `" V% ~5 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)
% c% y/ ?7 B) ^: a4 ?# U5 fset j
5 z; C) I- r) u- a$ e7 _" E$ w( j + 1)

/ K3 D3 ?; L' p$ i6 u]
( u9 ]! y7 t# v2 r) pset [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 ))6 @6 a9 m0 G+ I2 q

7 C  y6 v. Q1 u' a& V: \" m2 b
& l& G2 Y# _7 T  U8 z( Z$ E
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ y$ y/ _) |* |
;;
及时更新il的评价质量的评价
! {. _+ G; ?& Vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 M3 |! c0 A# l, V% n3 H$ B& Z
set l (l + 1); W1 |& H# J0 U9 s; y; N
]
5 z( Z1 U  W* g' b% D, u" Rend) Q4 r$ G2 P$ d1 {! U

) N) n8 [4 p9 g8 D5 Y8 Fto update-credibility-list
3 G( R' s. {- l  f! E! Hlet i 07 E. E$ [: C5 q0 s6 C5 f2 X
while[i < people]& t# G  \4 n$ x0 C( h7 N2 M8 \
[
: ]  @# X1 K5 Llet j 0
7 ~/ R' b* B" x2 k% {let note 0
( L* }- I1 _8 _' V2 C; `# n0 elet k 0( w) Y8 q% ?+ Z% c5 T
;;
计作出过评价的邻居节点的数目
4 N/ e/ y9 U2 I) T/ R. Uwhile[j < people]" ?& o6 @( g7 d4 q! Q4 \8 s$ T
[  A/ h7 J8 s! D' x: C4 o
if (item j( [credibility] of turtle (i + 1)) != -1)+ m7 R+ U$ v" D4 F
;;
判断是否给本turtle的评价质量做出过评价的节点
1 D1 U4 Y5 I. E+ k5 ^' z[set note (note + item j ([credibility]of turtle (i + 1)))
  }5 C; F  Q+ I;;*(exp (-(people - 2)))/(people - 2))]
# k  j8 I1 d* E- o1 C6 [9 h  h
set k (k + 1)
' e6 k5 ~/ ~8 f! r]
" v; D! H6 t  lset j (j + 1)
, U; m5 f7 M' e3 w0 r& f. P: ?& j]
* x; n  f& m! D2 X' ^' vset note (note *(exp (- (1 / k)))/ k)1 u$ h% Z0 |3 y* {/ c7 H+ V
set credibility-list (replace-item i credibility-list note). v% ~% S, Q  ?- Y3 _
set i (i + 1)$ H) P8 y' N. J
]& O) ~& T* @" A  }  h( e' c( V
end
7 Q3 \9 k5 \6 W/ Z% R' M) d4 H6 y2 j- ?8 q7 P
to update-global-reputation-list
  Q- A/ W$ Q( xlet j 0- Y0 j8 B" j  K  ~" `# A5 Y
while[j < people]# o( U# D: |9 L! f
[
$ D* n7 `; f- R" A! u$ \let new 0
' c; t4 r* o6 t;;
暂存新的一个全局声誉
& |0 t: t: D6 p6 Ilet i 0
) w/ E  O: V& `) b  f1 q) r" n6 b& Zlet sum-money 0' n; G& O* r7 r3 Q6 B" V. o9 r
let credibility-money 0
$ {, b% B9 U: ]( Bwhile [i < people]( Q& |. H" S& u* a) k
[
- g' G: M! `+ D( `, v* y' p: uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ |; {+ A- \! O* Q; U! I& h, a7 b
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% e6 k- F( |6 S6 o$ zset i (i + 1)
/ E( a; }2 c2 v) v]
. \5 W" I+ N6 s  ?8 ~$ V) ?let k 0
8 C4 y- D  z* [5 c5 l8 Q4 ^3 C% y7 Jlet new1 0' s% p& X& y  y0 M+ k
while [k < people]
' m6 A" m9 x; s3 B9 [/ F: G; x[
' r! C5 l- C1 D; Eset 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)
- |/ Y* `8 d2 S% {5 Gset k (k + 1)
6 B: ~3 f, n4 T]+ p+ u6 b5 Q, b6 L$ z$ ^  P7 _/ b
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' m( t2 Q' s# n3 ~) ~! F" G% J. }
set global-reputation-list (replace-item j global-reputation-list new)
! A/ F, j7 S9 X) R; Z+ R  i/ `set j (j + 1)
1 M0 J0 l5 b8 \- _4 R]' G7 e5 X/ m" Y7 i, g
end6 c/ ^) ~. E# ^' w' X# X3 s
5 M, ^+ ^( d  e9 Y4 M

, R9 J1 u5 R/ V( P2 K' `# n0 }1 x
to get-color# i; Z) _2 [! y6 ], r
! g) k- N0 ?: H! D  H
set color blue

( O0 L/ h' |/ H$ kend
+ h, v8 D6 B) w; {( l2 @) u& n4 t# Y
to poll-class
5 k, x* {! {% {( \. e5 L7 bend8 o" H; m: g9 ?7 b* r. Y. I/ S- M9 Y
0 U" `- i& B1 M
to setup-plot1
; i) @2 X+ @! E! B5 c! o7 W- z/ q3 L  D
set-current-plot "Trends-of-Local-reputation"

: [4 c3 B2 N8 R$ k, ~* U8 ^+ U6 A6 c2 J' R+ c* }
set-plot-x-range 0 xmax
( X4 F# m( L" f
. h: R/ S! G' [8 N* B5 j7 z" x" ^
set-plot-y-range 0.0 ymax

- w  X; }4 e% e. i; O$ Wend
- h7 |- v  @: V0 `
0 C" l& }4 s- V4 n0 v  ]- yto setup-plot2
( Q3 E9 H% U# \2 Q6 o2 ?' h
0 m9 K6 |- f4 U$ v4 Jset-current-plot "Trends-of-global-reputation"
1 I6 I8 D: f) ]) f0 Z. y

$ G4 {; D: n; X" ]set-plot-x-range 0 xmax
3 |- s% H7 F: {& X! F3 O. _

$ ^2 B" e6 X2 ^set-plot-y-range 0.0 ymax
' |: W3 H) M5 i4 n) j# f
end
1 P1 D- u5 _8 I5 E+ v$ c1 J1 N# J! P4 U& s
to setup-plot34 L2 n/ J( c; ]$ Z5 a

4 f6 j% g: x9 O$ U! T9 w( zset-current-plot "Trends-of-credibility"
# i. _. L, J  z3 T4 N! B8 \
2 P2 t- r; U( ]6 ]7 o1 G4 {
set-plot-x-range 0 xmax
" v* B, S0 R, Z
8 X3 j% ]+ p2 c, ^: u- j$ `
set-plot-y-range 0.0 ymax
4 ~4 o9 A- g* d$ J9 e# t1 g  D
end, H& K/ i" X9 A- K! v4 o' x

0 |+ t& o: m' h! u6 L# V$ oto do-plots
  N% z2 ^4 x; h0 l3 }1 T: |set-current-plot "Trends-of-Local-reputation"
$ }. I$ I( g4 oset-current-plot-pen "Honest service"* \9 H. U$ U; H) C$ P- t
end7 [4 J9 U$ L, L+ g: }
/ M: N. D0 f+ R) o$ e( }
[ 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.
1 Z0 K) X% o0 s& W
) q4 f# R  h# B" V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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