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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:
* d2 l, s+ w: u" |to do-business 2 }' d/ S3 X) ~5 K  V
rt random 360
* G% k' a0 L8 x1 l fd 1
2 A0 Q! h+ F; r4 V. T ifelse(other turtles-here != nobody)[
! K" ~8 j  ~$ L1 U   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.
& h9 e6 a% j8 @! {- h4 p2 M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 D" y. a$ ~) Z( p) M( i" f* S
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 I$ I: y- S% b0 n- C& i& e   set [trade-record-one-len] of self length [trade-record-one] of self
. H; p7 _4 k+ R' L. L0 I* l* d   set trade-record-current( list (timer) (random money-upper-limit))7 e5 K$ t  L- n7 a, f6 N1 x
0 s0 ]7 u8 S6 {/ P' h5 y8 S" i
问题的提示如下:
) ^* g. F2 k4 ^3 X* M( v% T# L! O+ {: y$ a: S
error while turtle 50 running OF in procedure DO-BUSINESS
8 _% _7 n# n* f, g  called by procedure GO
% M) {4 C. {8 D* uOF expected input to be a turtle agentset or turtle but got NOBODY instead.9 @, i: |- m8 d& B# g; ?$ s! z. t
(halted running of go)
7 D( s$ `# c: p: Z2 Z, N! q
5 e" |: o" X* f! O: g这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
5 g, Q; |1 `1 D+ o7 l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2 G) a9 K, @8 O8 ?2 t6 x2 z
globals[
+ t6 X: s) F8 Yxmax
* n4 K2 o. D) D, |7 V, V; Tymax
6 b9 ]" [* A! }0 Xglobal-reputation-list  R  C4 @; Z; {* X5 @" m& H0 h+ Q, T
! R7 h  Q: n( G7 c' m7 O" \6 I
;;
每一个turtle的全局声誉都存在此LIST
, @4 K7 I3 n5 xcredibility-list4 ]2 {( y$ t/ c$ O
;;
每一个turtle的评价可信度
& M3 }3 k) t7 `0 N% S- Y7 {: qhonest-service
: [& |- D1 W9 s! Z, L! m8 Bunhonest-service6 M, E" i9 [- M
oscillation) j4 N* @; j8 \3 V7 s7 J5 O3 [% k' z
rand-dynamic
, Q$ G3 J, G, M7 V( U$ G]
. Y& e1 |6 U; }4 Y+ T! H, e0 L7 C$ M. ~* `* I( h6 @
turtles-own[
3 k. X3 h1 \( h8 V: |7 \trade-record-all
8 U2 B* I  z9 K, ?;;a list of lists,
trade-record-one组成
0 L; j; `* O) J- R. ~" w9 htrade-record-one( J8 X/ m+ Q3 u+ _" |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" E! H6 w  |; @+ `8 ~- u
' H- p  p( {8 V$ m# J;;[
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& {/ Y/ k& f, U% U# ^4 I9 utrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
) R! R) M# b6 p* }% 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
% I7 ^/ C8 |! K9 J; {5 n. Z2 mneighbor-total
' W- V7 X3 N- {/ H;;
记录该turtle的邻居节点的数目, n( l9 f: K  h) g, H( C8 l. J
trade-time# D: _+ j. X6 {" `' z) F  y
;;
当前发生交易的turtle的交易时间
) h+ U8 b+ K1 F$ g5 ^/ Y. _$ z4 k% }appraise-give; K1 |5 [' q5 y1 j, F
;;
当前发生交易时给出的评价$ }1 R9 e; X$ L( x' V4 G
appraise-receive
% E; I$ `0 W9 R- J& v& V  k- n& Z. u;;
当前发生交易时收到的评价
8 T6 B$ z  g; M1 wappraise-time
9 c. V% L) m: l;;
当前发生交易时的评价时间. w% V. |+ B; |8 \% l# D" |( {
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" G! ?" l6 @) M& Q7 n" @0 s
trade-times-total
" L  D+ \8 S% e$ J. m;;
与当前turtle的交易总次数
/ g9 }! I' w' J; R. N( \trade-money-total
# c& L% g* X  X;;
与当前turtle的交易总金额* h" y5 Z7 s, B* e
local-reputation
2 r+ [! @$ j8 _  h4 ]# L) l6 Vglobal-reputation
6 [) B' r/ x& O+ p0 @credibility
  Q8 v0 ~/ n" e! |& Q;;
评价可信度,每次交易后都需要更新0 Y: I& \  J% W/ |* m2 Y
credibility-all( N( }' C2 \" O
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
) R! Z8 Z  d& j- F5 ?, {5 H( S, ^0 ?8 X5 Q; p9 e
;;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) q& a9 s2 A0 y" ~% Q
credibility-one) t+ [' h% ~- }) W5 K0 d6 @( 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people7 Q! \5 m( G5 S2 H. B' R8 G0 Z
global-proportion
5 @* ~% U# K5 V/ h* O- d& n3 scustomer2 r, z* ]; T( x' q
customer-no2 B& k% C% p$ {2 f$ o
trust-ok
: E9 _+ E. @/ w  U0 g& E$ Itrade-record-one-len;;trade-record-one的长度
- t3 _7 R( a6 b8 B]
: p; z7 k# W' R* {
) T/ i) \& j' P( h; k1 N;;setup procedure8 ~, n% L+ U8 s: r$ h
2 e- z( b2 x# t5 G
to setup
; _* \3 \" ?  f, w, a: u% \4 D/ k; }# }& k  k
ca

& B; _4 ^( g/ Y6 l% _
$ p6 j' r# z0 W; Dinitialize-settings

* S+ W3 ^. ]! S! y9 v  S* t: [9 R; w$ Y1 P  u5 |% n* a6 F$ o0 M
crt people [setup-turtles]

0 b8 G% b3 C5 U5 M  b' }- r7 C, C% ~  \7 \( Z0 G: A7 o
reset-timer

% ?8 l0 z) r8 |) B7 X& S
- r6 j. L! X7 h4 e! v3 s* ]- k* Q  Dpoll-class

0 f0 @  \6 a& Z! ~7 z& I& c" Y+ H4 n0 g
setup-plots

& u2 R: K, l8 _' V+ i  J. i! E3 D" }: n  {
do-plots
+ |4 Z( ^7 K. H  z% b2 ]
end
+ u% ?1 ]% @$ f
$ z  Z5 u/ m) B' \to initialize-settings+ u: z) M" y, g) V$ ]/ f( U! I

& ?( t/ U" O; p7 w3 w& ?# {% sset global-reputation-list []
- b1 r4 [% Y$ L/ P' r' J6 u- H
! z) M; f- F$ ]5 I( U5 z2 |
set credibility-list n-values people [0.5]

9 _0 o7 i$ v' G- j9 X: R2 }7 i% A4 s, _  b9 I
set honest-service 0
: c' O+ s/ V5 \7 t
5 h0 I3 X  W' U' m7 m
set unhonest-service 0

- X" k1 A: e, ~  Y3 a
  \$ i7 E$ q7 b6 X7 Wset oscillation 0
# J* _( C, u9 ?; O5 O, ]- y5 `

- y! |7 y4 x3 t- l6 nset rand-dynamic 0

  X0 P8 I* {; y+ v. C6 V' u: j& tend
. R) S5 o, h- ^8 v
( X9 N) K! `3 f' V; Eto setup-turtles - d' n9 Z$ ?0 m( ~9 h7 z
set shape "person"
3 |, r2 s, e8 q$ s" N1 ?- csetxy random-xcor random-ycor
8 A& `4 W2 E2 D' ?: Q  X7 A& ?set trade-record-one []
8 [  v& f% C- E/ R# @! T6 ~
( H& n: j% t; B/ ^  o; @
set trade-record-all n-values people [(list (? + 1) 0 0)] : d3 z0 U! V& @+ E: B
& L& B, [  q% l- ?
set trade-record-current []; E, d# ]  L! ?# P
set credibility-receive []
" l  R' K% e1 s  i9 Gset local-reputation 0.5
2 L& ]0 r& N. f3 R" g5 o/ O% Fset neighbor-total 02 r, M" d0 q# s' [
set trade-times-total 0
! L1 Z- C8 ]) _: R/ a  Tset trade-money-total 04 {1 z5 s5 O( L1 |) n( b
set customer nobody% T+ a% B% o" o/ p* f
set credibility-all n-values people [creat-credibility]: b. w) s( d$ u8 ?  N7 I
set credibility n-values people [-1]+ g0 y6 W. D' N0 l% |' @. x3 Y+ Q
get-color
7 j% ~" k/ f: i9 G6 \

" {0 e% s! A7 l' J1 t& Xend
; E8 i; n6 x! {3 `6 r# {: |/ b7 Y' S5 o! \/ y' c8 W
to-report creat-credibility) e7 _5 Z8 i8 S7 K4 f, s" ]
report n-values people [0.5]
: H, G4 d0 ^+ Q2 {end$ A" Z) R' [/ O0 Y# ~4 E
) _9 _1 p) I  M4 T1 ^( _1 ?& V
to setup-plots! s$ T5 d# t$ I' W+ k9 m# v" k

; C6 j3 }, }4 {% U+ z: R" V7 xset xmax 30

3 S" m3 M% v  L5 y; ]( R
1 Y0 ^7 h5 l- l  j' `/ Aset ymax 1.0

9 ~: j/ A, h; }$ t0 X- z3 i' Y* c5 B, t6 ^8 h  Z, B
clear-all-plots
# D  x7 s& z. e$ F1 s

2 ]+ N8 P/ r. |' f5 k0 q5 V3 esetup-plot1

( |# E8 h* l$ r  e" U  f4 F
2 q9 H% x& W) x4 D' msetup-plot2

; G  }' ^, B7 ^( k( b7 @. S; q3 E) S# G/ U! ]( f3 {
setup-plot3

/ E8 e6 ]8 _# O# n- g% Oend& D# A/ n% w6 _- ?* B- V' Z1 E
7 S/ E% ?+ }! H$ u3 J' j7 ^: ^: _% L
;;run time procedures
0 {! w  B* @3 f0 W" \. i
7 k6 D" a* j% Hto go3 j' g: b/ h! h% H& n3 b
" m6 a# @/ o; L* S/ |
ask turtles [do-business]

8 I  i% L% w/ l* Bend; m+ e; a$ B0 b1 W

6 o! Y- V( }) {8 Pto do-business
) J1 z4 c: X, t0 j" j+ C

. l; K1 e  i8 t5 s! r3 }* C. [9 N, K3 M( ~! Z# q  r8 V
rt random 360

3 [# N! R: u) m
: d7 _- s* e4 n5 p3 _  j. Ffd 1
7 v# X& ~: I3 t  l- Z

6 D- }: S$ F9 `ifelse(other turtles-here != nobody)[

  a- L! B" i& }! b. s
% B/ s- n; L- z: u* V1 K  V! Mset customer one-of other turtles-here
  Y$ A1 t0 H! Z7 l! x' l% d& g: \

7 C8 S0 j3 I; }+ }9 _' o;; set [customer] of customer myself

/ H5 X$ K7 q# ^2 K" n4 `2 p! U
+ r1 U0 b  |. _; ~+ l% p/ {3 g  i. Fset [trade-record-one] of self item (([who] of customer) - 1); M7 `7 q* r% V+ H1 K) \' H
[trade-record-all]of self
, g# {2 P1 }( c! y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% t% J8 x+ M+ t' ]' f+ S, r4 d$ w/ d7 X5 g! D7 N
set [trade-record-one] of customer item (([who] of self) - 1)
' L% p, b: q) W$ I( d2 J: c[trade-record-all]of customer
& O: _$ h. M, L2 {" ?: E. w
2 S( B* s4 U- j) w
set [trade-record-one-len] of self length [trade-record-one] of self

' |. V! e' C7 E! f  d
, C$ w/ i+ G2 n* D: \( J/ i! |set trade-record-current( list (timer) (random money-upper-limit))
2 V/ d  u; m* d/ |1 y

% f0 r3 i" s) A1 F; t" ^! bask self [do-trust]2 H: Y6 {: n, f3 i4 T6 \8 D
;;
先求ij的信任度
% Q8 l8 M; e1 o% l5 f2 `2 S% |  G, m. Y' O; `3 x" z3 u5 I
if ([trust-ok] of self)
3 e; z  q5 j- U7 ~1 o1 X4 K;;
根据ij的信任度来决定是否与j进行交易[
/ ]  \! O, a/ x/ p, Nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, t+ y) ?. U- W& _# A. l
' K+ r+ o/ j8 ]& L, O4 Q[
# I' R1 C, L5 G4 u+ @9 U

9 K0 z# A# G- w# L5 V4 Z$ pdo-trade
9 q! t, x" E7 M. C$ Z

# X# `# @4 X9 V& R" Bupdate-credibility-ijl
2 L$ X2 Q' e6 M9 T
* N* f6 `2 A6 r# q
update-credibility-list" i; q$ Q0 r8 }0 N" Z
& Q: h4 u: K# A1 V5 Z2 K8 H

! \  d9 j" l' _5 W/ |% @$ Pupdate-global-reputation-list
# P& g0 j2 d3 j

" x1 ~# e" h( _  N5 `$ @6 epoll-class
8 ]( N+ p$ A( h" V- h# s
+ J  L% v9 }3 j. v0 @
get-color
  Z* B, [; b# Y/ [, f4 k0 X# p

3 G, ]$ u8 f: H2 w0 K]]4 V" ?) @' z$ Z$ T' ]
# c) ?- }5 D, f/ m
;;
如果所得的信任度满足条件,则进行交易
5 t! t( e5 X! t+ y/ V# I$ {. \% h4 {0 D; [0 g3 S; x# g! O: t  H- j
[

, j8 s0 {9 G: ^2 M0 N9 J( k
" K- ~. ?- q6 S. L; Prt random 360

% c( n" S" ^5 i: `$ ^3 Y
8 P9 [* h/ F0 c2 F7 D$ mfd 1

2 M( X1 m# o. q& h7 s
+ t8 g/ H! N) R& S6 U# K# d3 L. s  `]
6 Z& N% B$ p- p

8 m! C) F7 `6 G% a/ X1 z: \0 W( A! n" Fend
/ N- H# s1 h2 m/ M- h* ]
9 J9 Z# p" d( W" S- O1 {* |
to do-trust ; l9 \* j/ w1 s* q
set trust-ok False
; z5 n3 C- I" {- C* s* J  z
2 D1 e" v& E6 G7 T
% P' a) }8 e7 g& z) Q
let max-trade-times 02 X7 O8 Q0 `: ]" S4 D. }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& q; x4 ?3 ], Rlet max-trade-money 04 Y0 L4 ]( t, t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ U$ g3 r2 q, w, L7 m  Q& T! plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- H( b  Q$ r$ l9 [6 }2 y

: e" j6 v, w7 Q8 l7 I

5 J  U% n4 `9 |5 K0 {- c+ dget-global-proportion
4 F$ n: W( o3 Rlet trust-value4 Q9 H0 M* g6 I! n  v
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)

; m+ e& M  c6 i% [) n( O3 xif(trust-value > trade-trust-value)
5 t5 K6 Q( K" @[set trust-ok true]
9 E4 f% l* C* p7 n! Pend
" H  n. A4 [7 h* |  E) O* K7 N( U. B' ^  @2 t3 G7 }: O
to get-global-proportion0 Z) f6 B6 s& j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 `6 p( H9 O7 C+ \[set global-proportion 0]
" z1 d9 E: X/ c: P6 |- r4 Q[let i 01 c1 Z1 I/ ?' K5 [
let sum-money 0
% w5 w3 t, d' vwhile[ i < people]
( f- E( c" [4 R, Q[: z* g3 V: e; }: e4 J4 {" ~: {0 A
if( length (item i$ Y4 k$ C+ L8 L
[trade-record-all] of customer) > 3 )
3 z& @3 y3 W+ a  j& |
[7 C$ m2 W- ]: ?3 k) s& S
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))( l3 t! j, w, `" Y" A
]
) y5 Z7 w% h0 H! n5 I+ j]" ^7 i; ~3 x* T, R6 |3 j
let j 05 |. W2 f  Z+ v  n" {- D7 C: Z
let note 0
" x' x+ s; F' ^8 }' y' g8 Zwhile[ j < people], A6 Q  `( f  Q& C) ?. [" f
[; c/ U+ i# U) E
if( length (item i% s& N, ^% u9 `* @' O/ e! X- W+ J
[trade-record-all] of customer) > 3 )
$ y, r/ Z0 A0 l8 s% r
[
; x" N! Y& p& l1 k0 p0 u" l/ m. Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- M& M9 i/ g/ J+ o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( r2 @& ^6 l0 e7 A% \; g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 K6 P& r* R3 T
]
3 }; C/ j$ i; r5 X]
6 N) c1 O+ v5 cset global-proportion note5 U- B* ^+ D! k. C4 y5 A
]4 ~! V' {5 `* i( j
end
7 A. Z; p) R# I/ L- l6 a+ d. M! I/ w( V( P  A5 ^, x( y
to do-trade
2 m4 O9 L1 Z) u( R7 B! p( Q;;
这个过程实际上是给双方作出评价的过程
9 K( W+ k% Q0 G0 P1 P: Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 `7 n2 ?  ^, _) Z+ M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) r% }' A6 ~# R8 o1 Dset trade-record-current lput(timer) trade-record-current
. N  ?3 u. @# h2 w;;
评价时间2 j' m, R$ y: s* ~6 h
ask myself [
) a5 _. M6 r" n. eupdate-local-reputation
: ]& L; u! Q: H( F5 [- x# }set trade-record-current lput([local-reputation] of myself) trade-record-current+ z3 O1 i7 {: \6 s
]
! }: p) e6 C$ {, z6 @; x4 Bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ a9 P8 _. t) b# m;;
将此次交易的记录加入到trade-record-one; u  U& M8 V5 j1 R6 V$ [
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ A. ^) o! g1 P" k
let note (item 2 trade-record-current )
% B2 H2 _% B' _: t+ H6 J$ Bset trade-record-current$ j/ x3 |3 A& L
(replace-item 2 trade-record-current (item 3 trade-record-current))
& V; R2 p- `3 T
set trade-record-current
! F: |# O3 R2 U(replace-item 3 trade-record-current note)' }. C" T4 z# l
& r- p' a& G4 x2 Y! {
2 g% X, U+ R, [& {4 r4 E% m3 Y" S/ ?
ask customer [
( N' Q% t$ s) X5 I! Vupdate-local-reputation' b2 J, a5 G- Z. J9 P8 c, Y
set trade-record-current
4 \: r. w) b$ y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& j0 x, b3 ^& R]
2 G4 J- o. b" J' N+ k2 f
  W  q, y' f: q' L$ O9 s
/ U8 Q! V: h+ Z  D7 |
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: R: \* j  H( z: K2 o. t
. O# y  q6 i) g: ~% |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ z+ w1 L% {/ r8 D;;
将此次交易的记录加入到customertrade-record-all( C0 ~( I8 a0 ?% h% t5 {. g
end1 S  u1 R% U) X4 Q
9 `2 {4 {# b& b1 E
to update-local-reputation
' G% Q5 ]/ Y3 N4 r( u& i) wset [trade-record-one-len] of myself length [trade-record-one] of myself
% f8 g# a4 k8 }* {1 G/ `! }# i$ E% c" w$ H9 q1 A" K  {9 Z& U

: i( f, x. }" ]) X/ r3 _;;if [trade-record-one-len] of myself > 3
- N0 D! x! D3 ?6 l1 g4 }- y
update-neighbor-total6 i8 |/ H9 T5 j, a% q* R( m
;;
更新邻居节点的数目,在此进行
6 A( Y( Z, w8 I9 |) ]  alet i 3
1 y/ l7 ?0 T# ^" ~/ b: L6 D6 \let sum-time 0
1 V% |$ I; z% l" n* ?  {1 ^8 _: w2 ]! uwhile[i < [trade-record-one-len] of myself]
# B9 a" x7 r+ _; \( q[2 [5 t9 j( P3 X- v6 B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ d7 @1 c  J( b
set i; d  F4 X9 u- ~- P" H& t
( i + 1)
( q: w/ O  Y, L: Y
]- ~3 j, ]8 O: k' g+ _3 O5 o
let j 3
+ m' A2 `# B& U4 llet sum-money 01 D( Z8 r+ S. k: l' @
while[j < [trade-record-one-len] of myself]
! O0 q! X9 f' U/ u! M! K; R$ C: Y3 T" a[
0 K, ?  O8 l! ?0 kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
% a: Q( P+ W# `  J$ t( s7 L' l  Lset j
  ~$ N% _$ [- X# l. A  W( j + 1)
" j, x! r0 b/ f; j; d6 ?
]8 e+ R3 a3 j( y" Z3 \+ ?- |( w7 ], P
let k 33 G0 R4 o% v/ N9 U, x
let power 0$ M/ d# |$ c  h0 g9 s( P- h
let local 0
5 G4 J7 G1 u7 G4 @- iwhile [k <[trade-record-one-len] of myself]
" L9 _& |! {5 D9 ~[9 C) ]5 C: F# z- H# g: ?- E5 I, f. F: Q
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) 7 M8 ~) R3 u) J+ k5 e3 {
set k (k + 1)
. q% d; B& `+ k  O0 @: `]
( o3 V/ z: P" J8 {0 ^. tset [local-reputation] of myself (local)
2 U1 R7 R+ M% G  z% r* {$ N7 Hend
9 d1 E7 a( p* A. n" E+ G) U" Q: f, ^, s
to update-neighbor-total0 x  h" R+ v) w

1 Q. A2 E; ~2 Y! z: nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' X4 s& v8 {2 L; F2 P- [2 L% m
3 ?% X* u8 o2 z* }+ Z* y: v8 x" x
! y' q! j" e' a% H# i
end
  z$ D$ T' p4 s& Z
9 ^. C6 l; x7 i; lto update-credibility-ijl . V) G+ ]% h) L1 E0 J9 [3 {7 J

6 s4 [+ A  e6 j8 M/ _;;
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。
3 O, Z0 A& S2 q8 g! Zlet l 03 K5 d7 Y. b3 P+ v0 ~
while[ l < people ]( ?5 l# w6 T/ J9 w
;;
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
3 O' Q; B3 Q, X[* U; v& t/ s- N; f2 m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). |; H9 K. p$ @7 @
if (trade-record-one-j-l-len > 3)2 ~( F$ C" C% P$ H
[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-one1 R5 r- A2 V: L2 r' n1 J% ^/ Q
let i 3
" S* b# p& L9 Qlet sum-time 0
+ Z2 P3 I+ ]* d9 ^* k! q1 f" cwhile[i < trade-record-one-len]
# N9 {% `! I! {9 I8 M6 R- j# c[
2 y7 T% B" s6 W( X, @. [; T' tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 S4 q+ j, m* e1 k2 Fset i
. w* B6 h. @' l- L/ j# G5 M; V( i + 1)
, y. P% o- L( n2 ?2 }- v
]4 @# s5 [( l: i1 m9 Z
let credibility-i-j-l 0' K1 ^1 ]; Z* F: |4 ]6 r
;;i
评价(jjl的评价)
) ^" q1 X( V8 nlet j 3
# Z  h$ W/ ?: n* `8 \1 \( ]let k 4
8 D( \6 k# n+ e  R; f+ u' bwhile[j < trade-record-one-len]
  x' @& z" F) P1 B[
5 g% L9 _( y7 ^4 B% N' Awhile [((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# w& U- t  ]& ]3 U7 u( k$ O
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)
4 R' L3 o, m  I* b, F2 E9 T; e) g  Uset j
" [0 w3 t  j8 r: U# v9 r( j + 1)

/ X: y  N' @/ {( A: m0 g0 f# ]]
0 L" A( f2 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 ))  z1 ?% ?7 g6 W( a9 W  N$ m

% w3 {3 Z9 z/ d" _/ L
' ^$ P8 c7 h4 \" y- }7 [% r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; u8 d9 j: O7 [& y2 w& H4 U;;
及时更新il的评价质量的评价
9 ?6 J" X; @! k3 s% T3 gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 L3 b, Z/ {" L" xset l (l + 1)
7 h7 F3 `0 l, L$ M' T, _1 J]
' w1 i4 M- o# ~9 Q6 L7 Cend' g, H3 }5 u5 ~# b" h0 I

* E  n1 \7 |  t% _8 u, N1 h) ^to update-credibility-list
7 e8 D9 I1 Q& \4 u5 U. Flet i 0# E  f; L5 r9 u
while[i < people]
- v. o5 `/ v& S* V, V* ~; F0 u[6 Q% m2 \. d) L# n( s
let j 0
2 i" `, w+ g9 ]& D1 V* H% ~let note 0! d1 x+ D* c0 p, g' t2 @
let k 04 {! h* P+ G+ O, V" i
;;
计作出过评价的邻居节点的数目
) f  s$ ?! T  _# m  [while[j < people]
9 W% W9 r( ?. p) y) Z[) N0 c4 v$ l& O0 h* q9 t
if (item j( [credibility] of turtle (i + 1)) != -1), ], ]9 J: W  A
;;
判断是否给本turtle的评价质量做出过评价的节点9 g! R; G5 |; E9 z
[set note (note + item j ([credibility]of turtle (i + 1)))
& N! k, P. ^; _; u;;*(exp (-(people - 2)))/(people - 2))]
2 D+ e0 S) K) [; M4 R
set k (k + 1)
/ s1 N% L9 m0 k9 B! K]
) g: K6 {+ A, c! y% J$ Uset j (j + 1)6 Z! ~% u$ R1 w, ^
]1 R5 Y, n+ L& s$ r# P2 [' a
set note (note *(exp (- (1 / k)))/ k)# w6 ]0 |+ I% ?) e
set credibility-list (replace-item i credibility-list note)$ N4 k* J( x6 ?, H
set i (i + 1)
, U: d# m6 q9 P3 x: Y' U. X! C]
+ [2 }# i& Z; h; e* Rend# O) W4 h" F2 I+ u5 v

8 _+ I) e" T7 m* ?. Rto update-global-reputation-list& P6 F& y, H, X; M2 B  V
let j 0
( N6 d; |6 t+ Bwhile[j < people]! v5 Y1 w* d0 y2 k0 }/ [# T3 q
[% t! V* ?( d7 O$ G, t! Z
let new 0; G8 w0 K4 d# m7 @
;;
暂存新的一个全局声誉
  q8 p" o* k9 }+ ^8 Olet i 0
  M: ^# m2 e& b6 I4 v& z9 L' _, L* X0 Rlet sum-money 06 D5 V6 @2 F5 b* R
let credibility-money 0
% D4 m# B6 @, ?0 G0 {* f* Awhile [i < people]+ x' p" B6 P* ^. v5 ~, v* o
[2 ~) h. T2 i5 O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 F8 ]* c1 a* W  g4 r  Uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" d- O) r8 J* m$ D0 W0 c  @- z
set i (i + 1)# p: ]5 I5 B1 \, R4 s
]3 @. w9 k' r) |
let k 0) f% F1 E  Q, o  h+ E5 e6 g
let new1 09 ^) s2 \" ^$ N0 `+ G
while [k < people]
: F+ k+ m. p) b. M[  [& @; E1 Q. w
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)
# p, V" s& P2 p; iset k (k + 1)( i' S+ l+ p3 T" S' O: _
]
) K0 Z* W% F' M+ [+ J$ Z! @5 Fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ l0 `$ T) q2 T9 B7 y4 t7 \set global-reputation-list (replace-item j global-reputation-list new)
$ q+ E3 @2 _; k  M. a4 }set j (j + 1)/ {' \' g6 ~8 V1 g! Z3 z- v- L
]
5 ?, }4 A: x7 }0 Kend. P1 r1 K% X. N* a6 s! y

0 _3 f+ M7 N; M0 y6 \: o  p) r( x6 d9 Q3 k! W

& m0 b6 ]3 u+ n) [+ a' d/ Bto get-color
2 E4 Z, E( N9 V+ _0 o1 p# j1 l
( a% D; w7 }+ `/ vset color blue
" U- g4 R1 W4 D- a
end: P  x7 x) s; y8 v
: V3 u2 d- L8 M6 t( `
to poll-class
  u0 X% J, t* Y. R0 m; ?1 Send
. G( b9 ?/ h) n% A
0 Z8 @& R. y5 o# F3 Fto setup-plot1! V7 F* t! B6 D( O

, v2 |+ d5 Z8 U) i. r7 g2 ]2 k0 Nset-current-plot "Trends-of-Local-reputation"
6 v8 E) K8 T/ R: z$ L3 Y  h' W/ O
9 M3 b+ n$ d- U' M& b, U
set-plot-x-range 0 xmax

1 R6 [$ w' `9 V: T; W2 w; w- m& X* O% \
set-plot-y-range 0.0 ymax
* k* w* [+ W; w: ^% B; g
end' o/ s9 G6 v! y. r
! U( [  i7 p/ f
to setup-plot2/ g8 x5 ?% A/ z/ Y" M  M/ r: Z; E
  Z8 D' u5 C0 v8 a( ?- I3 b
set-current-plot "Trends-of-global-reputation"

3 V7 R3 G+ f1 Z8 Z/ D, X- H$ y' w: {# c+ \8 w5 t* _
set-plot-x-range 0 xmax

- r4 E/ S! \3 f5 k, F9 s- p6 L5 u
set-plot-y-range 0.0 ymax
1 |4 y$ ?+ f) e5 d- x
end5 S" {: N8 U" L; B# |: E+ `' x" Z# J7 ~
, Y, [# S& t+ K/ l
to setup-plot35 m8 Y+ `' e5 k# Y* ]( s
! Y: n- l& @' S1 S' y
set-current-plot "Trends-of-credibility"

0 C7 ?' s0 f# I+ ~# Z: {
% y1 D$ q+ ], B, {' Pset-plot-x-range 0 xmax

" D& o& u( [9 T6 r: T9 `) f/ C* N( w4 l2 F
set-plot-y-range 0.0 ymax

% i9 q" C$ ~. G% Q+ a' lend* O" R( P5 y5 ?& V! c
  z: k2 U8 i! ~+ u$ [
to do-plots
8 P6 w( f+ A0 Wset-current-plot "Trends-of-Local-reputation"! y6 r" M$ @0 k# E2 \8 a
set-current-plot-pen "Honest service"
8 {# n; V8 Q0 C% Z7 Xend6 z) p- o* `( q- e3 c$ ?

1 C% f. B% g! x! j+ f[ 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.+ z( [9 O# n  Q& a- {! f

1 B+ i* r" ]: d2 j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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