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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:1 G; x$ W/ R- M. T& u
to do-business 2 J% F! |+ L$ @& b- D; ]6 t9 L
rt random 360; D: V- J3 y. X7 b+ e& H
fd 1
+ T  v4 q- J" ^! ?( O2 W* P0 J ifelse(other turtles-here != nobody)[; \& @- D4 ^# v0 W" W- `
   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.* N3 B/ U# t: h6 W
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) O% H& X9 `) r, h4 h) q0 n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ \' z5 P$ E# r
   set [trade-record-one-len] of self length [trade-record-one] of self
! [6 V: l* x, W" f7 n7 c( L, t   set trade-record-current( list (timer) (random money-upper-limit))
& `2 j8 w* F- [
0 i5 x* I. B. E- t问题的提示如下:# p3 i$ C, r- Y
. w/ t2 R1 h) Z8 C. x' d
error while turtle 50 running OF in procedure DO-BUSINESS$ b- E" ^, L' k. X7 |
  called by procedure GO" @2 K) r! k) ^4 R3 M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) A" W% L2 m( [: P: Q: {% t1 o) z- q! A
(halted running of go)% D8 i: E1 J/ q% A  @" H/ ^; R" j% n" D

9 }0 m  i3 y+ q) K1 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~~2 T( z7 h7 C8 m' R" j0 j0 g
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
. |" e: \4 N% W; H8 yglobals[$ N9 \' Z& j$ M9 n( _9 h3 s
xmax
) ?% _5 T; R! j% Y* Vymax
, A: e* ], b3 c+ n0 fglobal-reputation-list
! [* g' D7 M- x' |( ~, C9 N* s+ Z0 q$ f' _4 S2 L/ S$ |* x" `
;;
每一个turtle的全局声誉都存在此LIST' {6 T: y' ?; {' o: K
credibility-list
( U3 I* W0 D* i- A' O# g: v; o;;
每一个turtle的评价可信度
& u4 C4 o( X9 U0 p! @) L$ ahonest-service  W( s: s4 c. p5 o5 w% Z, V& g
unhonest-service* R; U. F) t, t3 x* p/ l+ J
oscillation8 f4 N# p# K/ c, c( ~2 t5 N3 d
rand-dynamic) {% l! ?0 X3 W$ y- x
]' c; M$ \; X+ p6 i
2 G9 b: G7 W; u
turtles-own[# i$ W- l. O3 u6 P9 ~1 P
trade-record-all
, Y" ^1 D+ B4 W5 r* D9 E8 Q/ j2 @;;a list of lists,
trade-record-one组成
0 t; A4 X/ x+ W8 C9 ntrade-record-one$ {8 j6 `+ Z0 Y1 x! e: t! j" |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: r' v' }5 k8 o+ n; F' U) M& F* ]

- O3 q' \$ _& X% w) a! X;;[
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]]
9 d8 P! b: S; L, Itrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
9 y" K' ?* T2 J& Vcredibility-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
9 {! Y7 }  X6 j) A5 Nneighbor-total
$ V" N8 H/ Z% G) w5 b% j;;
记录该turtle的邻居节点的数目
5 b4 {7 n" s% t0 U$ `6 m4 G8 P6 a  ztrade-time' Z! `. ?) ~! S, R
;;
当前发生交易的turtle的交易时间% r: y7 [+ J  ~3 ]6 B: L
appraise-give1 F; c8 w/ G# {3 |+ v5 v1 E; M
;;
当前发生交易时给出的评价
+ J( r# }/ n( b3 p: a" A- D, W- jappraise-receive" {2 G. _( N2 k) L% u1 X
;;
当前发生交易时收到的评价
2 `+ @( S# A( t, H+ H7 j' p. D) Kappraise-time
9 U; Q! I% K- F;;
当前发生交易时的评价时间
2 k( ?: c) A& H$ O8 E8 g8 \: A9 |local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 |( V1 u& I6 v- _
trade-times-total
. {5 `- x7 F, j% X; k- j;;
与当前turtle的交易总次数. W' o* Y8 f8 J1 T" D
trade-money-total
: Y9 I2 `- Z) y: o1 x: U;;
与当前turtle的交易总金额: _9 R+ J: A4 y+ B$ e
local-reputation
; ?3 F7 R' t# @8 {- a+ k" ^global-reputation9 b; S4 R: c/ ]+ m  w
credibility0 N6 p/ b( A1 z/ |
;;
评价可信度,每次交易后都需要更新/ W. Z+ {: p0 I& B/ h; r) `2 V
credibility-all: A5 j9 G- o1 z. c
;;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
8 P/ c/ D4 B3 e; {9 Z1 e  L' M3 D
;;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, J7 L4 P7 v/ C+ k$ z9 ?
credibility-one! |0 H9 w2 [' A: y) K
;;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
% F: L& s4 s, A6 |9 d4 \global-proportion1 ]$ q* e% b9 b) s/ O+ L$ ^% u( h+ x, k
customer
: @& E4 F- O" _9 }- Icustomer-no& w( l: {7 F! p0 D7 T7 @
trust-ok
8 W9 ]: R3 K. S6 R- H) strade-record-one-len;;trade-record-one的长度
9 ^( A# M' w# [. {( G]6 g4 P( t7 b9 G# c

( U$ |3 p! B& D  y;;setup procedure
6 {0 b5 a# q3 n  e6 j* J' x. O+ W7 z- N
to setup* X4 u  h; V5 W1 P- k
  [: m: M$ @0 l) [& m( C2 K4 a
ca
* O4 H5 x8 K) A$ |

1 d% H1 u. B* z  S) qinitialize-settings

" k9 d; H$ u/ u+ T
/ j5 b' _# z* J( h5 Z$ Y; O. D! U& vcrt people [setup-turtles]
( h5 j- i/ w7 o5 ]2 H8 {
5 {7 J) M& W, d9 i0 O
reset-timer

( V* k0 ^# F8 z
6 ]! R- t8 r$ j* Lpoll-class
9 S; I% m: I/ m# j; P+ W

( G9 {5 e& x, w) Hsetup-plots
) s! k" A2 N& d7 t5 v

- Q( f$ C6 r: n0 M/ a% G: xdo-plots
) L, f# e. J' X7 J' u- M
end
+ X2 a& K$ Y( |* o' D! M4 q+ j6 d
( X( Y8 G( t8 Bto initialize-settings" w7 j0 I0 u# z2 j0 w

! S& C9 x" g; n; Vset global-reputation-list []

2 j4 k( a% R2 S1 J. I4 |( u# _/ H! j. X
set credibility-list n-values people [0.5]
" o* I1 f, X& }# ~" k! |
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set honest-service 0

1 k. G8 t4 L# V/ |- g
! h# c5 ^: L  E' h0 W: xset unhonest-service 0

" k* |5 l7 C! O4 V! F: _$ J' \& e* V# E9 t! x/ c
set oscillation 0

: Q/ D! b  N( S) w# k$ r4 i" s3 D+ M  M- Z2 f3 s) {2 _
set rand-dynamic 0
* x: H* i( K0 A" k7 I
end
3 V! I( |( l6 c. z& ]. H" C. F$ Z8 @, A
to setup-turtles
3 {  @# l) s% R5 x0 Yset shape "person"3 I" V. ?( y) l# G: V
setxy random-xcor random-ycor
4 t4 @7 H) o7 a# ]! T! dset trade-record-one []
8 k: b- y/ O5 l9 I+ ?! h% M
- m0 f/ Z5 |' }& r' L
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 L% ]. t% a6 d2 A; e/ e

* A( M- g" `/ T" Vset trade-record-current []) Y: n/ P% ]# Z3 Y9 o* A. g
set credibility-receive []
. F$ ^* w- \# v/ Q( vset local-reputation 0.5( W& L/ U/ B3 v& l! U
set neighbor-total 0- G3 \% K# ~. }2 D8 W2 b8 F
set trade-times-total 01 k4 p2 |) a) |
set trade-money-total 0% k2 F3 ^2 j5 o
set customer nobody
5 s; Z: l' U( [1 [+ E( v* Fset credibility-all n-values people [creat-credibility]
: k# T% S) z3 B7 D, f! L, Jset credibility n-values people [-1]# A1 m9 v6 {  T* N# a. M
get-color8 T8 _/ h  Y5 ~

$ X) J* M+ y5 H2 gend
/ P2 k$ R; K+ y, O
: Y9 D+ X7 ?/ ]to-report creat-credibility2 I, u' n+ e, ^& p* A- R7 T
report n-values people [0.5]
4 T, p! Q$ R/ O  r& a# Q9 rend
# T% P: p' B+ U! D$ Z. p; @1 W2 }9 @( f: |* O3 X7 Y
to setup-plots( {; r* p' x% L) X, W) D
+ O4 b* k  C3 j* x' R7 y: q
set xmax 30
3 f* j6 O3 D! _+ o: Q/ C( S
* T6 j+ P! U* h
set ymax 1.0
" d8 m9 i. P$ y5 V, T
+ i9 M0 q- H8 F7 S
clear-all-plots
) T% d3 C8 Y8 i1 C0 e4 t
% w* R3 \- p% j
setup-plot1

: R# L: Z8 ^$ Y( ^6 H' q# d1 w) s# D* n, j/ {
setup-plot2

1 ^1 J/ @" [) i3 j# ^" s
+ y' A+ C2 ?2 X# I, R" r: m& isetup-plot3

( t: [# V) |9 D: K  V+ Q' \end. {- j1 G' h3 d; Z* O
9 D' H3 ~' V, l, E+ l% Z% O
;;run time procedures
# _* \6 U0 }' C) \1 ~8 t1 X( O
+ k" r+ X) v5 U) Bto go
2 l) C7 G$ P5 a; R7 U" T7 z% e9 d+ e( v
ask turtles [do-business]
* Y" Z9 n. o9 o
end
: a# o. D/ Z* P) n- D" n! v
9 N( M3 c8 A( w( v' jto do-business ( i) n! M, g" D2 m7 a
% R# i9 o" T4 c

7 j5 h8 {' h1 [5 [3 d& Ort random 360

$ N; T, ]0 U8 t9 P1 J0 E% {* X2 E7 r, k& o6 K  q1 H( H
fd 1
8 t5 c$ c& Z" ?! i/ e; g# B- u
& i( @& l( ~" Q- N( M0 T' |
ifelse(other turtles-here != nobody)[
* _8 V1 {' e8 ]0 c/ a2 }: ^: N

+ S5 h' Q" x7 b& Aset customer one-of other turtles-here

% N' h2 x; M5 j& K- n- }; ~* r
' E4 A2 N: m" ^& b( V5 T# ~0 ?7 T- r;; set [customer] of customer myself
; ~* c. X, ]  p8 y9 X+ H
! F; e  G3 P. I" Q4 K
set [trade-record-one] of self item (([who] of customer) - 1)& C5 @2 y7 L$ p
[trade-record-all]of self
5 V  s- R/ @( q$ p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  G, B/ f$ v7 g8 R1 [: ^/ j6 Q0 W: ]9 K" b  e7 Z
set [trade-record-one] of customer item (([who] of self) - 1)% m  ^6 c0 g  {+ ~/ I  `% [
[trade-record-all]of customer

2 h* P0 Z! G2 o, X9 R
4 Y9 s* Z9 e; L1 B# zset [trade-record-one-len] of self length [trade-record-one] of self

" S' R' X* E( H1 \4 N
& z1 O6 p8 l5 n" |$ I7 Uset trade-record-current( list (timer) (random money-upper-limit))

  n3 ~) v# c* B' E0 ~% W6 l! E% h  _; ]
ask self [do-trust]
7 Y5 B+ h& U0 \;;
先求ij的信任度
( _4 i/ {, V% w$ Q% ^: k( f* e1 i9 q$ @6 s
if ([trust-ok] of self)
9 r; A, E) D% ^9 w2 i& q;;
根据ij的信任度来决定是否与j进行交易[
. \8 E8 A6 [+ c: x2 L. F: A5 r* cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' c$ E- a6 f" C9 [& v
5 T' |. N/ J  ^' p. t5 D! r- N
[

* T8 P& O  T  i( U8 f2 c) ]3 F# M% o# Z3 c' B
do-trade
# {) G& x- g4 Y& F' C' [
" N& {0 P4 V! x6 q* m
update-credibility-ijl

* b$ l1 q' K9 q/ b5 P* s# z! R- t, I
update-credibility-list* ~4 \: j9 Z7 d  A

% |5 t* d. w$ X1 S: S6 \- O8 `; S4 W  T  Z
update-global-reputation-list
) f6 c7 e$ `) Q8 {/ s4 W  T

0 n- o7 J5 a  T, Ypoll-class
# A5 N6 @7 W4 t* v& F* b
5 ]3 X2 P" [( e( w
get-color
1 Y+ \4 B# a# `& H7 \: D

" g0 Y# ?! S  C  {2 p) ?% e* M]]/ w! Z/ b. }$ }( w

6 U( k2 y& t1 G- R5 q;;
如果所得的信任度满足条件,则进行交易
$ x3 B6 o! m% G. \* }
& g; v- b+ M0 `; u, j[
  _2 P7 i# a7 d
' `0 r8 q, ?; E6 r
rt random 360

' c! _; D+ t6 `7 _& I' c" z. K9 Y" _
fd 1
9 ~3 t3 n9 i) {# `! y+ i, z7 F

. W3 G1 C- K' P]

) V* X" l" x+ @. m  Y) n* s1 u  ?. v0 S
end

8 e1 R* g/ ~! ]5 L, L/ K
7 T# u8 {# t5 C' K3 r1 s9 Bto do-trust 5 g- D9 _6 [+ b  ~9 u; @: T
set trust-ok False
' `; |& w0 @! C2 I! w
1 {8 ?+ O* \+ f9 s; M: ]" @3 B: ^

0 Y5 O9 c# T$ N" z4 H* xlet max-trade-times 04 F! g- Y( m. H& H+ M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 m+ d5 {7 q3 q6 z7 E0 g5 v
let max-trade-money 0
( {# D' R( V4 I6 Q4 lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* P2 v: Q7 h/ l# |
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# a, i/ x$ r* r
$ G1 f0 Z( t$ s$ S' `. T& Z

/ @" t) Y# o, J$ i( U" [( _get-global-proportion
7 q% [) ~- Q% v7 R8 H6 Qlet trust-value, {, U4 P. @9 P9 [
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)
- i5 }- V6 c5 a5 {
if(trust-value > trade-trust-value)
4 I% Y% e/ k, J! ][set trust-ok true]/ y& J8 k# C. S8 Y
end
6 S( O& j0 e- Q4 b* z( z8 {
& f1 O7 S) K: G% X! N3 m1 uto get-global-proportion) k) @. Q2 O$ i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 n0 g/ V# U% H7 i2 T. V5 d9 Z1 c
[set global-proportion 0]
2 H: K' U8 A( P$ E2 g% Q[let i 05 g: C# F1 g2 m5 K4 t4 F4 q: }
let sum-money 0
2 U9 t2 a- r- X( L8 T- gwhile[ i < people]
/ `" Z; o# |, ~[
% A: F- X9 L7 q, r  sif( length (item i
2 ^# a* R3 y: s+ `1 S+ Q8 ?/ K[trade-record-all] of customer) > 3 )
( @4 Y( {' W2 `- n0 H
[) {4 W, L; N% p0 E' U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) q9 W' O7 D2 J) {. m# g2 [, e]
/ F- A; d4 v4 y9 C# q3 d]  }4 Q  t# Q! {0 Q6 Z
let j 06 O& a9 r* l8 Q. p( }/ V* r5 }
let note 0
( F, V( `4 U& ?! D6 zwhile[ j < people]
" k: U* ]) ]7 u1 E) V- {[" L7 f# D! i- d; \" P* h
if( length (item i4 `+ h2 F9 ]! }' k' g
[trade-record-all] of customer) > 3 )

" ]! }4 L3 ?0 U2 p[9 O: Z9 Q5 Z# B) c+ w4 ~/ E, e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 _5 M2 z9 |' ~# [. \, u[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- P. R3 P  u, u; {+ `5 z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' w2 R6 }) ]2 J]
6 H4 T# k4 {0 U/ F5 P6 \3 J2 \]
  Z( n; I9 o  Y( S1 sset global-proportion note
! `# E: B0 s5 u, }, b1 [- ?! Y]5 R0 F( Y0 h  `$ F; t1 n3 l
end
  A$ Q/ Q' L! b5 s1 K: C8 b, ?- [/ a) z# E3 l
to do-trade% m; C( Y' D0 o9 A' \( m
;;
这个过程实际上是给双方作出评价的过程4 w, ?2 Q/ F, I: @4 z" }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' I6 M# h, P6 ?% r: O3 X. I3 a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. S7 R  l: j' }0 B2 R7 @, \set trade-record-current lput(timer) trade-record-current: N  v2 ]: k  R0 K  v
;;
评价时间' `/ D6 R- m2 g. J8 @
ask myself [' J/ D! o# A7 O& k; ]1 D3 U
update-local-reputation
" c" r3 c: x0 F% Uset trade-record-current lput([local-reputation] of myself) trade-record-current, s% }4 F" G$ I. w% O( ]5 y3 `8 n
]; s* Y: M% h7 w2 t# |
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# P$ h+ M% I: E2 c5 U" F( u;;
将此次交易的记录加入到trade-record-one
9 k, Z; }  K0 G7 Mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 ]/ F8 {: ~. G* glet note (item 2 trade-record-current )  W% q, t' Q: Q9 M) d
set trade-record-current
; e4 U' U# W) o& i2 e9 y( z(replace-item 2 trade-record-current (item 3 trade-record-current))

5 S5 `  ]! b' a/ W! F3 E7 J* [' \0 W% Kset trade-record-current
( o6 c  M' ~) X(replace-item 3 trade-record-current note)
4 d8 ]: k7 e& _$ \/ [0 N2 k/ ^; ~/ h

3 V/ m* f1 v% n( V4 Yask customer [+ k+ [1 I5 d# N- I
update-local-reputation
2 I4 o4 k# ]4 S; mset trade-record-current& F2 _' h: U" f5 g7 \3 R
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 K! f6 t4 a& f/ f9 |
]) N# C1 t" N9 U4 r
- M- Q) h/ S9 ]

% c8 u* n8 U! K9 H& w% pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 r& P0 ^0 Q7 y1 M5 p

1 ~: A; u$ X5 f; d8 L% Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 p4 u0 I6 [. i. D& F;;
将此次交易的记录加入到customertrade-record-all
$ h: z# }, f# Bend4 V& j, y+ u% B. v+ j  {
8 b* w& b) {& x; K. z- Y
to update-local-reputation
; u) ]4 z# T5 }3 J0 ^$ W, uset [trade-record-one-len] of myself length [trade-record-one] of myself
" e7 j1 Y9 \0 G* r9 ~/ b' K
. ?0 K9 p' E  _! `% n9 O& [. |; s. o; ^
;;if [trade-record-one-len] of myself > 3

1 Q! R4 |& x/ D" n. hupdate-neighbor-total
& ~: k. A4 i$ x  s;;
更新邻居节点的数目,在此进行
% a+ b  o1 U# ~; b% m( f+ |8 ?let i 3
0 M! k$ K- @; ]  x% t$ blet sum-time 0
6 K/ X6 j+ }0 @. Nwhile[i < [trade-record-one-len] of myself]
8 a9 K0 l- {1 @) A0 J* X[
9 d( t3 V) e# U0 ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ E4 a4 f9 C/ a  g. U4 ~: f; s) h& l( [
set i
6 z! P/ t7 w0 l; Z  M( i + 1)
7 L* {' a4 W" Y! x
]. y, M( W" v* O; l+ h4 e
let j 3
: `) }# }) z5 I% d. Q7 Q. r8 _3 r7 jlet sum-money 09 J. @( A1 O$ \; k
while[j < [trade-record-one-len] of myself]
! g$ a: i" p4 U0 p6 W[
$ p2 E1 R- X$ L' n- ~( Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! t5 Y5 w* j7 c. |3 S
set j
, e3 {/ h  C/ ~- Z' i& z( j + 1)

% r+ Q1 ?( ^8 L7 U]3 P( v# O0 }' e# ^. y
let k 3& N* ?( D% P+ _, ?- C# x: G
let power 0
7 G1 j: {* U! p: @$ e. mlet local 0$ j4 a9 l% M) a0 ^
while [k <[trade-record-one-len] of myself]* T% y" H" [1 d6 o% c0 e) S
[! H8 v+ d  y  f" g
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)
+ m* y) b$ R: v# gset k (k + 1)
/ ?: {2 j6 ?8 M9 |]+ g0 n+ g5 d& P- y6 q, j
set [local-reputation] of myself (local)/ P* `0 w# g" [7 t: a
end: h( T0 h0 H6 I1 z
8 m* |7 \& Y1 D1 R* M& a
to update-neighbor-total  Z2 w: G9 D" S/ V' H( d/ o

' T: ]+ B' ?& c# f8 Z7 U+ Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& s% r: M& a( U% E# r' W& S5 w0 e3 y& B4 {* `
9 X* Q* M+ H( d7 A" n  N
end
6 r: c$ k' R. m& D; [7 n
- Q. U! o4 i  c( Q9 T# b" Mto update-credibility-ijl
0 I% _' J& E3 m! U" [5 U" A6 @( y% j
;;
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。
9 d8 R7 K% b7 E% vlet l 0) A5 O% U7 Q5 D2 c+ s( n1 \; Y  s
while[ l < people ]3 f0 q( N; C; `' C
;;
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
; j" [: F' Q; Z, \[7 `- h# x! r7 P/ E5 ]0 m; m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 e+ ]3 j* Q8 X+ u7 k, |if (trade-record-one-j-l-len > 3)
7 _, m% l% k& ]6 A[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
4 S& j! Z2 G* @+ [2 \let i 3
( z# `; D) P! Y  t) Vlet sum-time 0$ i8 ]0 D! ?' ^( o7 v
while[i < trade-record-one-len]; z" C- w, e1 \- @
[
: w1 S. ^* F1 a* T' Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( J! q% M, U5 B2 `) uset i' W9 d$ K4 D1 }+ |) \
( i + 1)
) A; U* ^- p, g1 l8 b
]
7 s9 K) L8 {4 L" g9 ~/ n! Slet credibility-i-j-l 0
% z; ?/ W3 @6 u- @  J2 g;;i
评价(jjl的评价)* z5 R0 V! W; K( }  q/ a
let j 3
6 N9 |/ V; e. {! O! Vlet k 4. `" d4 i* y2 k: ^* {8 U! M1 p
while[j < trade-record-one-len]
$ f4 W: Q  J- i7 ?. u. _8 c[
. b% U1 ~* V) h7 R/ _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) U/ f4 n) {. [) D5 E2 T  g4 W
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)
' B& Y" P* V" q3 P' T$ v+ Vset j
4 @( C/ I& X# x( j + 1)
& T& ^% H  p! Y9 @$ ~/ x& ]
]8 z1 O9 V! N# y6 \! V& R
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 ))6 M' c! n6 B9 `  h7 `

: _- l3 Y& @& h2 C0 ]
& ~( V' G8 b; ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* s" j, v5 o. d, m( C* G- A
;;
及时更新il的评价质量的评价
+ b9 A$ b2 p* Q  ~4 fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 l1 ?5 o; k& L8 ]# Q8 j8 {
set l (l + 1)
1 x& ]2 z& u0 [3 `7 r2 d& N]
  ?7 a& b/ B& K2 v( tend1 Z& k2 }- ~% b# d' |" L& R# c
- N2 }! d7 t* e) v' E
to update-credibility-list# b! z: o0 F5 N# x1 i5 _- O$ d
let i 0
) S% R% }( I( D( }& `, z4 \5 @. o5 Jwhile[i < people]: Z5 z$ N0 b' b" G; g
[: W# s! E) ?$ ~3 c: S& r7 A$ h
let j 05 J/ ]3 v4 B+ a& O' R- e; |
let note 0! a. f+ ?; U9 x: f2 G0 e! T
let k 0
' S  n6 l1 e: ~) }( `$ D$ {2 U4 `;;
计作出过评价的邻居节点的数目( p* J1 ?: m% R+ _5 H
while[j < people]
5 s$ B0 b: S$ K- ?[
5 h) S' U5 |. ~$ ~if (item j( [credibility] of turtle (i + 1)) != -1)
6 ]3 r0 p/ M! V5 t;;
判断是否给本turtle的评价质量做出过评价的节点
' ~1 T9 h" c/ V6 P. T[set note (note + item j ([credibility]of turtle (i + 1)))) C. O* [( }# k, l
;;*(exp (-(people - 2)))/(people - 2))]

: i, U( @2 j" u8 X. B) uset k (k + 1)
4 r- g2 K5 `7 t# ]7 R1 ~]& F' X: M9 M  W0 ~
set j (j + 1)& x  i9 l" K$ r$ ^3 s# e
], Y) J' q( I, X# p8 ?& O/ q' C
set note (note *(exp (- (1 / k)))/ k)
! N& i5 M% o% @# s! rset credibility-list (replace-item i credibility-list note)
4 o# E, v* i7 q$ o+ iset i (i + 1)5 A, t/ S% _4 O4 }
]4 ^' {) D, J- W7 E. q) S/ p
end! X) n( A% P, {9 v6 r6 K
4 V; d. z' b8 h
to update-global-reputation-list& D) n7 H: o, g. O0 m
let j 0
2 L$ J& H0 u2 ?. s; n5 Xwhile[j < people]
2 I7 L4 T# X4 V/ J[$ N$ X8 `9 D; j! u
let new 0' \6 q2 V4 g' i- L& A
;;
暂存新的一个全局声誉
$ A! N9 {  A! x  B$ E5 E3 h" Hlet i 0
' K* @- r/ z7 `. Alet sum-money 0
" m8 s4 r% i5 @4 R  nlet credibility-money 0
/ w- D! R$ S! t2 F6 k3 u5 `" vwhile [i < people]7 \( ^5 C" D! C. A7 A4 n; v0 H$ ^7 E
[( J5 `' z: o4 d, J" c1 [; Y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  p2 _1 I$ \# H& |2 ~1 P2 a0 t& ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 e& U4 x* z) O
set i (i + 1)
8 W4 ^8 s3 L: R+ z]* J* l  L: j4 m0 V" K4 q+ x
let k 0% i+ h4 |) l+ Q: A# \
let new1 0( A2 F0 ~1 C7 F% g) q0 S& z
while [k < people]3 e1 @5 R+ c; }7 b
[4 k+ E0 ?8 D8 j& o( d% l
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)
- g3 C4 r8 X2 Hset k (k + 1)/ u4 g% W- ?* t' E2 Y0 Y* _
]) i4 p" d$ z8 Q1 R8 E! d3 H, Z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' a0 n1 o( r8 t8 f+ \; _' e
set global-reputation-list (replace-item j global-reputation-list new)& \% [- l. b7 R6 }
set j (j + 1)1 W2 c" u7 o; m. `' n+ _
]
7 u3 G0 T+ A! a1 k+ y: X) Rend
8 Z8 ~% h3 h! T" v$ q" L. J
9 j, Z# f1 [8 n& {
' u7 G3 }. }5 |- {, _5 I. B% q) ]* D+ p/ {* D& Z, m
to get-color: j0 _% }" Y1 f

  _1 \! }" j7 M7 f/ N' s$ oset color blue

6 X: G5 J5 i& C$ W1 }  }; lend
- A% Q' X3 `/ x8 E5 H, Q% F- R: {& \( \& v5 A. [, w
to poll-class
, g' d8 s5 x) }6 \4 X- _end2 T5 Q0 h! S) _9 X5 b9 ~7 b  |6 W/ A

1 K" r# F$ Q* t3 G6 ]to setup-plot1
0 B* T/ |( m) T+ d1 P; i
0 C: O" O2 {' e' G  S  jset-current-plot "Trends-of-Local-reputation"
3 M0 t4 [4 ]/ V3 P
1 H  }9 I" F2 l/ Z
set-plot-x-range 0 xmax
/ d) \4 d$ n6 M3 T. c- a& }& v

( B1 O9 c- A. {& w) v: G$ zset-plot-y-range 0.0 ymax
* Y. u0 S8 h# w
end' ]: W  ?4 e: G3 v) ^9 k
. ?' U. A) R5 x4 r, s: K6 L
to setup-plot20 s" o1 N' a( x. \! x

" H, Z9 q4 ^1 f8 sset-current-plot "Trends-of-global-reputation"
/ H% u2 C$ B" b0 ~5 T

# J  V( r; e6 h5 v5 Lset-plot-x-range 0 xmax

6 U- @/ J% X- X
+ o7 d9 J3 M& t( `6 hset-plot-y-range 0.0 ymax

1 C0 ~5 C9 ^. ^4 Y7 Xend
+ j  }3 p: w: V2 L' V* |! W' H. ^3 v
  @: N( B! ]) W- i  wto setup-plot3$ y% U/ ~3 x/ U6 l0 t; q/ a
$ d- @' B( V  B9 B
set-current-plot "Trends-of-credibility"

' b- V+ _0 u, q6 I! v  Y: F# i
" a" ~1 \* F- P  Q% Iset-plot-x-range 0 xmax

  x9 m4 E# G: ^. j' c/ Q: O6 F7 O4 R9 @) M2 r  I- }
set-plot-y-range 0.0 ymax
1 P) _0 S( T: L3 N2 e$ N2 W/ f
end
  P7 w: T  S- j9 |( i+ p# @
: S; x$ `( Q4 b' y5 lto do-plots
4 Y8 n# X3 K) T  Lset-current-plot "Trends-of-Local-reputation"
2 l. |# ~3 p+ e9 d  a$ k6 [/ R2 H. pset-current-plot-pen "Honest service"% y) Y# d, }2 ], C
end
# X. @1 t5 |' a8 Q+ o9 Q: L3 z. ~. P+ c3 Q
[ 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.
: s- G% t; ]5 k% T7 a; C7 m: }9 l/ K0 s, K
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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