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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:! j( g2 o5 X* x2 C' K
to do-business   K  m  f* p5 u) x
rt random 3604 |2 o% M2 w9 t% r6 {! Q
fd 1
* g; @) o, i( d. B' t7 e) v ifelse(other turtles-here != nobody)[
& K+ \) `7 U/ _& G   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.% @  J5 \, U3 m9 N: P% ^
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & N, {/ I2 J/ A7 w
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) k, p" o5 c" J- E( K   set [trade-record-one-len] of self length [trade-record-one] of self
7 p( M5 p' k( y( o& i4 p, S   set trade-record-current( list (timer) (random money-upper-limit))# l) f! G: Q1 X3 P- a8 b( f' r2 |1 r

, i; C9 F1 U# d问题的提示如下:
, e, |- G: G0 o  e; f' r3 `; d5 a3 ]: l3 Z. p# f/ T( G
error while turtle 50 running OF in procedure DO-BUSINESS
- k7 x: @; G# i$ u! |. b; O  called by procedure GO$ }' j' O# R% i3 w9 T! t
OF expected input to be a turtle agentset or turtle but got NOBODY instead." N& o; @3 M( [0 F9 M9 Z
(halted running of go)
; l# x( q1 w; E+ O2 ?5 [, h% @/ `( A9 O5 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 k' V  t% g8 |7 ?; h" W5 f. Z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
/ N3 h# x1 P$ `% lglobals[, d1 n% x: O8 U' R1 z) ^3 t
xmax
1 K1 R- N: G9 \* @7 Nymax& t% V7 R7 \6 {  m, k
global-reputation-list8 Q2 E' u1 R2 }

6 ~5 T8 a" J" r3 _; E$ i2 I;;
每一个turtle的全局声誉都存在此LIST# w8 I# W! C" U% M' C/ ^1 q
credibility-list
, h1 r( ?' q+ J6 o9 R4 W$ Y# W;;
每一个turtle的评价可信度. s3 A6 p# A; p: g
honest-service9 J; c7 {  _2 c5 v+ b# W
unhonest-service
: t2 z, |" ^+ T2 Toscillation
5 _- [( |8 _0 E1 b6 Z/ D6 ~rand-dynamic
: `4 z3 j, ^5 Q; l, D]
! N* I2 g2 R# `" `% ], F
: _1 E2 H: T, e9 m& _9 tturtles-own[
, w; T7 V4 v5 }- ~! r& jtrade-record-all( }5 L8 ]% l: ?6 E( ]
;;a list of lists,
trade-record-one组成
) n( y  j1 P0 D; d7 Strade-record-one
$ n: r8 t$ F' D: f" ^. P;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! J& q& B8 T' b% H! f2 R
( s6 q5 q- q* Y9 R1 ?" {5 B& P
;;[
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]]
$ b4 t3 X- n# y/ m* u1 t6 |3 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]
! \8 l* t: m9 kcredibility-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
4 k* M$ D+ f2 a, Bneighbor-total
' f2 `1 [2 \1 y. H$ L+ r+ q;;
记录该turtle的邻居节点的数目, N" S/ E5 r* v9 K. H6 F
trade-time( ?( n% }' B  S5 y6 o  h9 i, H
;;
当前发生交易的turtle的交易时间% b$ Q+ ?- v- Q9 y/ a* V
appraise-give. o1 W4 y  ~4 j( W" B5 E8 G- ?
;;
当前发生交易时给出的评价
; z* g+ y  m2 A% F6 [, {" S) dappraise-receive$ L* w5 N) y6 |2 W
;;
当前发生交易时收到的评价
" n2 c' s# C, H5 U% `appraise-time
( P0 L& a6 _4 @% n$ e;;
当前发生交易时的评价时间
5 i& \' q5 q( z' S9 zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 E& N, J- j$ |2 K2 ]
trade-times-total) g* D5 z1 ]6 U+ {. K) b
;;
与当前turtle的交易总次数
2 M' i5 ?8 ?$ G( D1 D- \. otrade-money-total$ c& `2 v, s  ?6 N
;;
与当前turtle的交易总金额' p1 k; i8 m8 B2 p/ A5 O5 V
local-reputation
  I+ P. V7 g5 v7 C* w, ?global-reputation
6 {2 k) H' Y! S6 p/ J0 E8 Q6 Gcredibility
, ]+ m9 H1 o3 L5 I# z;;
评价可信度,每次交易后都需要更新% @. |8 N8 T4 b) p, p
credibility-all
6 J( l" o. P5 J;;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; p- R+ D. S5 ~5 K  [9 J

" V. y' K0 {6 o;;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
3 c; e  M+ N, d0 v3 A1 wcredibility-one
+ }9 w/ G# N2 E( v9 n$ Z4 K8 ^;;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) r& p9 }8 l; K
global-proportion* J) x4 R0 S  z- |
customer
* a$ Q) f$ y& I* _6 O0 N- scustomer-no3 b+ y0 w% s/ ~9 A* e
trust-ok
. u8 K( ^5 m- H" [trade-record-one-len;;trade-record-one的长度( ?! W* O' E2 i1 E7 i
]9 F* D( U% r) A$ @

/ P3 \" o3 p7 ~, ^$ {* Y& X% Y;;setup procedure
2 V# ?8 k$ J5 [( G7 c: N8 C2 Q1 d5 z
, f, k* r& z: r9 S5 _! ?9 e* [  Gto setup! ]  k) X5 u( B
" Z: j0 e' h5 n7 A
ca

; {- ?# g1 l, X$ @# j/ a3 E
3 z7 m$ M1 u5 Q! ]/ ]initialize-settings

* ~& d- p; e' L( ]
0 b1 U: \6 ^' V' ?: F5 v' _crt people [setup-turtles]

$ ?8 W" v3 J1 c* r7 t7 U
0 v6 Z: P3 E0 X( h' @4 ereset-timer
( ~- _; |2 x1 q1 o5 R

, b5 k( A' z* P& |% @/ R6 k& Cpoll-class

  h8 x0 @. C# b  m# X' p' V* ]9 G7 O9 z+ @8 D
setup-plots

1 b7 i* R) b, o2 q8 R, Q7 |1 a, a) Q0 o  _* X, a
do-plots

8 m4 q' E9 e! {* Tend
4 G" Y2 l5 S! N5 M5 q2 Q" n8 ^( g1 w1 b# P% O. z
to initialize-settings
; q4 _+ T7 P6 Z  H" Y: W  {
$ h' O5 J' W4 B4 h3 o9 Z, {set global-reputation-list []

2 w& z, f2 T2 F6 R  B( T! t# I$ A" I% x! v' r7 J
set credibility-list n-values people [0.5]

, b; n1 J/ M6 R4 H
; r$ l6 u; m1 a8 A: L  Yset honest-service 0
; e. \* Z! K& n# d; E
' q1 s$ s" T. _9 J9 H  y+ n) L9 V
set unhonest-service 0
! t& D! R+ t/ w& s+ X3 N

; U! [# E: A$ _7 _% ]3 d* n. Bset oscillation 0

8 }( G8 p! h- e! p# c( B( b
5 F- z# X  i7 ]* x: @3 uset rand-dynamic 0

( ?- D+ Q6 Q$ k6 H  ^2 L; F6 D9 Y6 l' vend
1 M4 X0 ^' n5 B; r- C6 x4 o
+ J1 p$ X( k# [+ lto setup-turtles + R4 b& P' P2 p5 b
set shape "person"
' Y9 {, B* x. J% D: isetxy random-xcor random-ycor
% F& c2 ]3 b2 S& Zset trade-record-one []
+ R9 r, u* n0 V( p

# O! v1 n* j" k0 `6 c/ i% o) Aset trade-record-all n-values people [(list (? + 1) 0 0)]
* n8 W1 b& X2 Q0 E2 r) i

6 F0 G0 _5 a0 U; D" a0 qset trade-record-current []2 [0 u8 \( H, l: Y  Z9 D0 n
set credibility-receive []
* U4 ?+ l$ Q( J- y& M- f% Nset local-reputation 0.5
4 O1 \$ `% o2 K; a0 bset neighbor-total 0
& o1 n7 I* @# m  t# ~+ a7 s0 g5 ~set trade-times-total 0; [9 E; b) z) S+ r
set trade-money-total 0
6 `% Q+ j4 l" hset customer nobody$ d. G# a4 v2 A, S
set credibility-all n-values people [creat-credibility]& U, P' k) q- p+ l+ @
set credibility n-values people [-1]" i, C$ f9 ^7 y( \6 |% u8 {- X
get-color
5 t$ W4 z8 W9 e- a' z7 v* e

9 _+ l$ g. ]& Q3 h+ z9 Q5 L+ I) V% wend6 p4 Q5 x; `# ^0 t( M0 z$ J$ S- b9 T
* @$ o4 J) n4 \
to-report creat-credibility
1 Q( ^3 X3 \1 i3 |+ f2 \- A1 oreport n-values people [0.5]
. i' Z0 U8 @" v# Eend
3 w2 R1 F' Q  O2 l5 n& O& Q9 N
$ R9 t% i2 B* h% R* o9 K5 yto setup-plots
& M" j7 B' ]; P) s4 p$ W. S) _+ P4 b
set xmax 30
- z" \5 f  b% |9 I" H: c1 l

, j$ u% Z$ G) Q/ L) k% ?) \2 qset ymax 1.0
% i8 u" a6 \. z- F
$ u) ~" g5 a0 P
clear-all-plots
6 A$ U6 G+ y) M- k$ \

2 g5 e! r' j+ w6 J; [- k- Wsetup-plot1
* ^( t7 @8 b3 S. v
  @: P9 ]2 V" M$ I9 Y" k) C' ]
setup-plot2
0 l# k! j1 q# A$ h$ ^
$ Z% G* B+ k& K  f) A8 z& y: }: o
setup-plot3
" u- r% W) y8 W2 @" \& L) @3 b
end
) w" z* \8 i1 a! i% Q9 T6 d9 |* b' L8 @% x; ^' k
;;run time procedures
+ V4 y* s1 t5 `# g+ g. b' V  i' \) N
to go, B, N1 V7 e6 @, Z

/ A' A7 K: y' F% D+ n# Yask turtles [do-business]
/ V. ]# b  `- h
end; }  x' }& g) z* |( ~4 Q" E

5 Y9 {5 v; c" T* O- _( hto do-business 1 n7 `/ T* J- M

8 }2 t  |2 z6 S, S, K/ M/ R$ ~4 d3 E$ I
rt random 360
. F$ V3 A  U9 d

0 m& a! q. N0 Pfd 1
. W# o' ^( w0 M& m
) S3 T- k# L  Y7 j
ifelse(other turtles-here != nobody)[
  \' q. v4 j' X( C
& T0 L/ V, `5 x. |/ X
set customer one-of other turtles-here

$ g" P0 n7 N- w6 h8 f/ o$ h4 H2 [
;; set [customer] of customer myself
: Q/ n: G5 q6 S  p/ ~3 W

8 _3 U6 l) i( H& bset [trade-record-one] of self item (([who] of customer) - 1), f. w% i+ R5 s5 f
[trade-record-all]of self
9 R& _9 X$ @; y& ?/ \/ m7 w: @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" u  M) \: }( e6 a* c" m  ^$ ^2 K" V
set [trade-record-one] of customer item (([who] of self) - 1)
" l* j0 c( F3 v# o[trade-record-all]of customer

& i2 o& H% k% q# u  D+ x. Z+ P1 n' k- B5 z$ |
set [trade-record-one-len] of self length [trade-record-one] of self
/ l; Y3 v, \' l5 a+ V3 @9 `
. A+ z$ B: o' @* V
set trade-record-current( list (timer) (random money-upper-limit))

2 c6 a/ C4 @0 V3 U9 }- i# K' ^( Q1 b  @: r# K
ask self [do-trust]- R  y" g; T! N# Z( Y& V- Z) f7 u! p
;;
先求ij的信任度
, O4 u) X9 p3 r) f
4 D- v# H' W6 N# aif ([trust-ok] of self)! u; E1 a6 L- J
;;
根据ij的信任度来决定是否与j进行交易[1 A7 M' k3 J2 }* k( O7 m0 b
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ f6 ^/ @6 L/ b: N' O# G' Y
) t; \# {+ V) y[
" K9 N1 s! s* K4 B* C
7 o( I6 Y% @3 b' ^% v
do-trade

$ z* Z. S9 q1 J; M0 y4 d* i
" X2 S7 ^6 P+ [) oupdate-credibility-ijl
: l4 A/ B% M1 {- E$ c# m/ C* m6 u

! ~' q# ]; c  Hupdate-credibility-list6 q, E( V' |! ^0 H* ^

4 M- _; ?! q7 Y
5 C: [7 `8 ?" u' L, [update-global-reputation-list

8 @7 l5 B. d, l- P; r- h' x* |) o+ h1 o. P
poll-class
& ]8 H- U3 g! N: ], \
& l# E- u0 s/ @4 F3 w
get-color

& C3 j+ l9 a9 J2 q/ j; q
2 f! E! t/ F3 s" m]]& f- F( g8 w: c- h  k

( m7 J1 Q9 E5 V; l;;
如果所得的信任度满足条件,则进行交易# d+ h% ~0 s4 {0 T: x, e1 v

& {' F2 `: p) s) e3 {9 u$ x% f[
( W9 [* E3 l6 `7 W, z  I1 U
# e3 V; r" c4 L: ^1 E8 i+ \2 `$ J8 v
rt random 360

' Z: X! v1 G1 u  L, Q5 l
( a+ f! k  V# c# t% K$ c& z1 _fd 1
7 }& i: }; C9 U

( U) O, @1 L3 v* B0 a: g8 }]
7 c& S# e+ Q; N/ {3 m; {! t+ d
  D% o6 a0 h. ^: D4 I$ {
end

1 {' I, y5 z1 W6 X9 o# n
1 I+ B" y; f4 @to do-trust
1 [9 E- ^9 w7 E; Tset trust-ok False  j4 \$ r1 O& ?3 J5 f

0 R; P, T" s" o1 F6 y' r

, G9 I9 o! y) Z% W9 M! ilet max-trade-times 0  |& A. D4 @5 S1 M  h+ ?  E1 }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- k& ^4 K$ k4 ^/ V' Ylet max-trade-money 0
! S9 c* L9 C1 Z5 u; bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; n* E6 w' v+ R8 a
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) {- B: m- @1 w0 P% l! M
4 l+ w7 U; O* K  j6 N- e

* B+ r9 ~, r6 O9 Q5 P( ~get-global-proportion6 n' ^+ x" f) l1 l4 |5 b0 p
let trust-value
' h' J$ N# H8 q1 v. plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' w, O4 s' y8 Q
if(trust-value > trade-trust-value). @2 V( @. o' R* N7 ]2 }
[set trust-ok true]/ T6 G& x7 `$ M4 O
end
, g, f6 d& g6 z
' T, L  D) k+ ~5 pto get-global-proportion
2 k, t2 j. X/ o" ]; ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# A- t7 N( R5 D' F( Q4 x[set global-proportion 0]4 x6 \1 M5 Y; q
[let i 0
/ r0 I+ g- s) ]# P2 Wlet sum-money 03 A( }5 I( S6 R2 M* [- h+ B# {
while[ i < people]9 f( k8 _9 B6 q# f6 c0 S
[' x6 f: y! M/ L" l
if( length (item i
0 J) T' Y+ Q* _2 {, G9 r0 w[trade-record-all] of customer) > 3 )

! [; U4 w( b; S  ][( `  _, W7 p3 P- k% p3 e# b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))' K. @. h! h* j0 h
]" {4 Q) G8 M! H
]
0 n. \* G3 I' @% Y% M4 ^: g" R: vlet j 02 @$ o2 T% h: \, w$ O
let note 0
! ]- X: F# ]& E8 e# |) n  jwhile[ j < people]8 @# O+ v: \/ i: E
[
! ^- j+ O7 d7 C  Pif( length (item i
3 Y3 }/ T0 `8 C+ h[trade-record-all] of customer) > 3 )
! k% R1 \0 X0 v6 \
[4 U+ s7 V' B" b; S& v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; d5 U1 c- N2 Q6 N& v1 c" @, c9 M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 t8 j/ Q+ x) ~! L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. V2 w4 U; n  ~/ _, t]9 C  e- t5 e# m3 [  D$ I
]
6 d: ~: o/ B( b6 q9 x* _set global-proportion note
- L5 Y  [2 Y6 G. r, C1 |]
7 e6 ^( r: O" L, A( Y1 {end
- G3 ^. f& q9 c5 e( {& o8 _) H( V# }" F! ?1 s- Z% j% M
to do-trade& d8 M) ^/ C0 p
;;
这个过程实际上是给双方作出评价的过程
, y$ S& W# v1 {' Q6 d+ Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) ?5 V8 x. d9 f1 M* H9 Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: [  c$ q. _( M  b6 nset trade-record-current lput(timer) trade-record-current
- P& p3 E1 k3 f! U9 K# |8 T# q;;
评价时间
" @- L+ a1 ~' Aask myself [
: B! S! ~1 ~1 h  I$ e+ D/ c$ `6 _update-local-reputation* h% _  o( K- {* j# J
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 K" G" r6 `: h- N, P]0 R+ F: |' S: Z1 @, ^& ~- u" o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: i: R* Z" ~$ y# O;;
将此次交易的记录加入到trade-record-one7 N% h4 A# C! R0 @% \+ o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): M: U# j4 `$ S6 y4 b. O
let note (item 2 trade-record-current )
, w" W* a. X6 c: u8 f0 R8 Yset trade-record-current4 H- G2 n) c+ n
(replace-item 2 trade-record-current (item 3 trade-record-current))

- x2 R; E7 L! P4 N0 Z. a8 e" \1 o% wset trade-record-current) m+ \8 f: O3 K3 a
(replace-item 3 trade-record-current note)
: E3 ^, _! R' l1 }& `1 v' x7 R6 w2 }/ j9 z5 m9 _* |4 g
' D4 c' F/ ]; P+ _9 q* L. ?
ask customer [
! [4 C, c1 @: w* g. C* R- Uupdate-local-reputation
: P. h8 H/ b) |9 F- X/ Gset trade-record-current
, {  P: ^9 ?( M(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' J+ o3 V- T, H
]! b$ E. s; L# ]" F; Y4 V

# |2 M$ v" G' m- E! [( p

5 ~+ q' z2 q& w; vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& h: o' b  `) b3 K7 ^9 j# Q
- o$ |) t/ x0 y2 q' n
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). H9 R  t% f" ~6 f4 k" i0 m; R$ h& L- o
;;
将此次交易的记录加入到customertrade-record-all
0 j: [& X# W' s+ [) c( ~end0 R. P1 q3 h; Z$ Y0 ~! ~, t
0 R- @0 y# u, N+ d  i! H! B
to update-local-reputation% @1 D7 Q5 F/ H, E  _& z
set [trade-record-one-len] of myself length [trade-record-one] of myself- J8 v7 y' ~2 Q2 f$ N# _' ]
1 v  p: I, C$ J. S5 |

( A7 H* M$ s9 k+ q& t;;if [trade-record-one-len] of myself > 3

, j: t1 L4 W" r0 p4 G7 Gupdate-neighbor-total
" x* _( b; o4 b$ y6 F$ b;;
更新邻居节点的数目,在此进行
! ?* `  d8 i6 g) M' w2 Vlet i 3+ R) {3 `+ m# h( p! S1 E. [  x
let sum-time 07 j( e) I6 Q" P8 N2 f
while[i < [trade-record-one-len] of myself]
4 ^1 M" R& J$ D& |[2 U* {/ w+ r8 i1 T% I2 @9 N
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 E$ g: _& Z2 d* \4 bset i
" Z' Y5 ~6 n3 d1 L9 ^( i + 1)

' X$ I- T, p# h' W. E  Q: ~) {; }]) N/ D+ N  X" p8 x% R& X7 k0 z0 o2 V
let j 33 q1 @- c2 f  \5 |
let sum-money 0( v' ^, Z. C7 h, R9 R
while[j < [trade-record-one-len] of myself]
* i- f' ?9 l$ |[: D# R( T& @" `
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)* l3 w+ E6 n5 |2 @9 w
set j
- K2 m4 W. l' I2 V3 r( j + 1)

; |: B, \5 k5 f7 O& ?3 []* w$ h! V2 V; f* o6 J: E9 M/ Y" `
let k 3
2 E2 \' K; S+ C& b. I1 H6 `5 ~let power 0
$ z7 z2 ]2 x+ [& W( plet local 0) Z7 p- x1 v  r: }: ^4 W) N
while [k <[trade-record-one-len] of myself]
  G: @. ?* V* |8 M+ ^[% X! Q2 [8 |2 a" Z
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)
1 X$ p" ~( A$ a. |: P" X$ aset k (k + 1)7 l( R# @( Y1 K8 _) Z2 k& h0 ^0 r
]) L9 V3 r+ U$ `- j( h
set [local-reputation] of myself (local)3 m  O6 Y0 |5 W# @; N2 ?
end
3 v: o) ?$ k7 A; \8 }
8 q0 h. v. ^( w4 N* Q) [/ Z+ ~to update-neighbor-total, n/ y" J4 b6 F: V1 ~1 \6 @
8 {0 e( z+ ^( a3 ~, b0 t* d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( D: ?) C  u. f: P
7 w; M  e& t( Y2 k7 F
, \; {: h/ v# Q9 y4 Y- a; N- j
end
: ?$ ~7 _5 p; i7 W1 L
# Z4 L" [; i& J# Eto update-credibility-ijl % @$ I( b5 o, @! Y( P  U$ f9 I

+ ?0 x+ v+ H4 G6 o;;
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。7 m8 }* h& k% V: B7 z
let l 0/ G2 p& }* P$ h7 _- E3 W
while[ l < people ]
7 m; b1 f  @: C) u% l; X( l8 X; A( z;;
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
8 d1 Q1 n$ z2 Y0 \3 R8 k' @[
3 ?- p6 R6 f% Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ v& F: ~! E. bif (trade-record-one-j-l-len > 3)
- J- x. C; @. ?0 Y+ T+ S[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
- N$ ?1 I+ c, E# m) ulet i 3
0 v. z4 p2 `+ ~$ W! i' elet sum-time 0
. T3 v. D, ]1 P" Y# s# c1 \while[i < trade-record-one-len]
7 @$ C% S5 K# |5 D8 H4 E[
9 _3 \% I3 k" `) j! D' y! m# qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( f7 e0 F# x# D2 P$ ^! nset i& S. V! F& u; J4 T4 `& l' u
( i + 1)

, L) k0 r( ^' r- c# j]' M9 C  d6 ~+ Q. D" X# e# [
let credibility-i-j-l 0
- p& m  i! _# H- J7 [;;i
评价(jjl的评价), I7 h2 S9 ~! b/ w: P2 |3 n8 _
let j 3
9 f4 r: {: b4 C) x, [let k 4* Q3 H$ f6 e8 _+ F5 E! p
while[j < trade-record-one-len]/ }8 d. P& e' a6 H% O- A: Z/ d1 g" Q
[
% ^* D1 R' f, N* `3 _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6 H8 O7 c- X+ _
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)
8 j; |; Q" J' E9 T. Gset j3 ^+ q! J. R% i* Y/ B
( j + 1)

" `5 {+ W, L& t- H% O  Q% j' B4 R]8 B9 A4 n' b9 m- B2 D
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 ))4 }) ^& a2 M) S7 o" t- g/ t

; e+ A' w( c- M7 X# I; g

1 i: N& @$ h7 R  W  Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; l: o3 T& ]# }9 Q6 i;;
及时更新il的评价质量的评价
  ?  B& l  V+ r0 dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! x! v5 ?; h0 ]& |/ U
set l (l + 1)
% q  l+ Z4 I) l! R]5 b  R! m9 c3 `& }1 S7 G
end6 F- L6 C5 t  M0 g( D

/ i3 _  j$ q7 P! R( S  Vto update-credibility-list
" I# D& M% H3 e6 R) v3 D+ |& mlet i 0" d$ J( b2 m* L, m" Q
while[i < people]
6 Z, ?0 u( C  m$ y) @4 N[
7 {# r5 H  `1 a* v' M! Flet j 0
+ F! A& r% K9 N/ ?! Llet note 0
9 L# W; f" i3 A7 tlet k 02 _& O5 s9 T( ]& }2 D; o4 v
;;
计作出过评价的邻居节点的数目' Y1 s4 Q5 h/ l* `7 Q0 ?
while[j < people]
: R0 k$ g$ `+ K! u[
0 r1 s6 F( {- d, g( g1 Y2 Xif (item j( [credibility] of turtle (i + 1)) != -1)
* j9 q' O' n' y1 J0 h6 i: H7 A;;
判断是否给本turtle的评价质量做出过评价的节点
+ @- S5 x1 i0 z% Y3 R4 K[set note (note + item j ([credibility]of turtle (i + 1))); E  q5 K% s: ^6 d2 o0 n- X
;;*(exp (-(people - 2)))/(people - 2))]

- f: i  _3 ]* L) j0 w( K( g. ~set k (k + 1)7 |5 y7 N( }  |! k- Y- ^
], M2 u3 d9 J) x' c. @
set j (j + 1)/ r, u- U  h* V0 j
]6 Q* `+ e# W+ T( V( v
set note (note *(exp (- (1 / k)))/ k)& n, ^3 }5 W+ h- s4 ~7 M
set credibility-list (replace-item i credibility-list note)' ]# u5 U* C) C- `1 e% t, s
set i (i + 1)+ D5 H- q9 ^3 f* |4 l7 I
]5 S3 o% q1 |" r! ?3 @% i+ U
end
. D# c+ N, d9 ~
- @) {- _! M) d  p/ tto update-global-reputation-list0 y( H1 F9 [7 B/ _4 ]6 a
let j 09 J, P" A; j- Q( i: Z- \5 ^: W
while[j < people]. @5 h/ ^1 G# w* }6 n8 ]' U
[+ ~+ z4 A. S; K/ g' e# _" T
let new 0
: l+ c5 s) n1 m;;
暂存新的一个全局声誉
4 w# r4 B: U) v' Flet i 0/ V$ v2 I: q4 _) R+ G
let sum-money 0
" K$ I( u; Y+ S$ B: a- Y& N/ j2 x1 Klet credibility-money 0
; I  Q( L3 {( j( {; `0 S/ V1 kwhile [i < people]( f! t$ \! A% H3 G9 o0 s
[
0 \3 o7 w- ^  J  v: mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ R% K- g' f, M$ ^/ L+ R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 P% ^9 Q( k6 b! }( f6 M: \2 ^+ N
set i (i + 1)
4 E/ Y3 K, D) B# j) R3 D]9 S' G/ X+ z" V' t  X* w: D
let k 0* N# y3 ^  Q, _" S7 @! J
let new1 0
- g: J- ~# |. u! ]' e  r: Ewhile [k < people]
( k& V8 p8 Z. H6 V6 T, t) p' a8 u4 V8 `[
# \  H' j7 h3 [5 @+ W; nset 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)* f* A8 Y. b* z0 R0 d% b3 f
set k (k + 1)5 ~; B$ h* K( t' A
]
4 t, ^& V5 M0 c8 _# f3 Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 y& p; |. L* W' I5 j; x' K. iset global-reputation-list (replace-item j global-reputation-list new)
3 I% [1 ~1 F; H( h6 B! jset j (j + 1)
9 t5 j  W3 R: l4 P1 W# J& f8 z+ {]# f- t, V" K/ [! K( ?& R
end) {( Z  w% {1 x( R) Q# d: H  E. I5 @1 x

- }' Q& D/ {; g9 H1 @( j+ e/ p) [( B+ p3 `1 c9 H# ~" p0 B

9 [. g# {4 t* \: R/ D3 dto get-color
3 q  \& o, d. Q5 G7 a4 c" Y- T4 U7 F" O2 X, _  ^
set color blue

5 \0 G5 E/ k5 m9 [8 T6 T, }' Bend5 \: Z" k, A: M$ D2 Q4 O& b% m: K

$ N7 I% G- a- }6 Z- F) Wto poll-class
5 Q# C" ?# A5 s8 U9 Uend: E; \/ j3 D# Q9 G4 E8 a+ M# K4 ?
7 H; q. n) h4 |4 C" P7 u+ G
to setup-plot1) k2 s; }2 R3 c  }  d

( v, d; V% y! `5 y; M* Bset-current-plot "Trends-of-Local-reputation"
8 b" E4 ~1 O( ^  T  D
- U6 A8 C5 B7 p7 h2 I  z$ t* j
set-plot-x-range 0 xmax

1 X) s' C; `1 Q2 O
3 P7 C* b3 h) i0 Y7 |9 h6 `set-plot-y-range 0.0 ymax
& h6 j7 q, x# b
end
( J; i  Z9 I, z) W
2 B  u% @$ @3 ^to setup-plot2) f( @# `. U4 ~/ j4 T0 S0 z
1 X9 X$ _- {: o0 b3 E0 I, \4 g
set-current-plot "Trends-of-global-reputation"

9 i7 T% [" w- U: f+ N2 l: }- i# S/ E1 F" r6 N5 y, q
set-plot-x-range 0 xmax
9 I% |0 @, t) C4 q! @  {3 G+ [. o. ^

0 I( k& y$ p+ l" l$ L4 j: \set-plot-y-range 0.0 ymax
6 C6 W5 W# _5 y3 P  v+ @: s2 c6 D
end4 Q3 d# J6 {) M. ^' z

4 B$ j8 u" e  m4 }- cto setup-plot3. O/ ^. s3 K8 N, y+ z

3 i; J; Q4 R  t9 a) @set-current-plot "Trends-of-credibility"
  Y; q: y) L" A) z1 |2 ^* x% a4 Z
' i" l& T, G) ~' u5 F, a, D$ T# r) P( e
set-plot-x-range 0 xmax

8 f. g" c; P: i# F8 ~6 l% k3 F" s: c1 G# [. }; f8 Y8 |4 ]; Z* \
set-plot-y-range 0.0 ymax

4 n9 I* ?9 D* g# h" N7 d7 i% yend
& f4 ^. t5 }* z8 R* }
/ d% n1 s% o6 s1 t) k& N8 wto do-plots7 j& r; b, H' O) p0 D6 ~
set-current-plot "Trends-of-Local-reputation". d  ]+ [# f' X* U( J
set-current-plot-pen "Honest service"
: H/ K6 g. q9 N* @. J7 `end
) n2 k5 x2 n) O7 Q1 K5 u5 U* Y& _* e. v$ h6 ^# M" _
[ 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.2 T5 f% o, X. Y6 x

- a2 D( {, D. p+ j/ w* d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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