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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:/ `* ~8 a9 J( B1 D: e
to do-business 4 I( Z" B; Q; x( |
rt random 360
! A! p5 _9 E+ M7 A4 Q& ?  m fd 1
% @. ?( a5 R6 }* ?6 l ifelse(other turtles-here != nobody)[7 A6 O4 M; l% i  k; O- l+ q' X, @
   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.
  U7 N9 N; C- x7 D# c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      O4 K  T* ]" S9 o9 }
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# G8 i9 F2 j; g' Z
   set [trade-record-one-len] of self length [trade-record-one] of self- B# T; B1 V4 b5 C* n2 R  E
   set trade-record-current( list (timer) (random money-upper-limit))& B3 l/ R0 Y' y( h

  f! P6 O/ @6 C. g问题的提示如下:6 @6 d6 C2 U3 g. a

. G; T. c: k; }3 O* P  herror while turtle 50 running OF in procedure DO-BUSINESS
* o0 D+ k6 X+ V: S' J4 C2 w  called by procedure GO
/ a7 u- S- ~% N, {, i; u# i# POF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ m# R7 V" w+ w, t# U
(halted running of go)
; b% h% t- Z4 J3 M! D+ b; x* B- S8 m
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~~
3 i, `. w! s1 l! n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
+ B/ `2 @8 h. }) a" _! ^globals[+ x5 L/ I% t) W% y, [, {" k
xmax
5 H8 |, _4 U8 K- e5 Tymax
- w9 U: H' m/ r' D  D: ^1 |global-reputation-list5 M  k' H( A5 y" M, D' g4 i
5 N5 n2 s% N, {; T& Z2 G* g
;;
每一个turtle的全局声誉都存在此LIST
# b: S; n) G4 p( ^$ V+ V  p- |+ }credibility-list
2 I; h( h+ O5 Q# m;;
每一个turtle的评价可信度# g$ H3 q1 A/ r; A8 y0 ~3 c
honest-service- V+ [* ?7 `2 `* L4 S
unhonest-service
  O8 C( l  f2 B: D, C) i7 j: doscillation
8 u2 L' K3 g9 d' _5 l7 l" |. qrand-dynamic+ k) Q% {0 i* p- ~; C; @; j
]; c2 c9 N; ^: E
' M& n5 M5 A) M" {. m
turtles-own[
6 O1 o+ s9 q, o/ ~trade-record-all  G0 e) ]# m6 |" F: F; q
;;a list of lists,
trade-record-one组成
+ \0 C/ y9 |8 f7 s- Otrade-record-one( u5 F: }1 `" l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 |* K2 {: `7 S, `& f

; M9 g& i' ]% Z* 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]]
1 u' Q9 e: p% h! x9 x0 A* Dtrade-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]
' Q- {. @( K6 E% W# B( T4 Dcredibility-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
) Y# ~/ s  G3 B. Mneighbor-total
7 x/ [% H: H0 U) C+ {' x! ];;
记录该turtle的邻居节点的数目
$ G, I$ M0 t3 j% xtrade-time
% E4 s# |& K6 A& v;;
当前发生交易的turtle的交易时间  X: g/ w- @) Y% }
appraise-give  L6 B* q4 _7 P2 T
;;
当前发生交易时给出的评价
5 K8 g8 I1 B3 h1 c! y8 B" [appraise-receive
5 z5 z3 ^; R+ Q: D;;
当前发生交易时收到的评价$ E, m6 }. W5 F5 ~- t  j
appraise-time
* [/ f0 i$ e% v7 e% M;;
当前发生交易时的评价时间
4 I! u% t; h) a4 Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 V/ A. j! {0 D  U' P$ Gtrade-times-total% ~3 j( e3 ]: p. G! m
;;
与当前turtle的交易总次数6 ~; T- T7 U9 X4 w8 H4 w
trade-money-total
1 k: K3 _) l2 C1 K0 m' W7 M9 l;;
与当前turtle的交易总金额
0 c4 M; {, A3 y# m% d9 E' G$ O: |local-reputation& T' m/ N5 K" N* c3 {
global-reputation
: k  R' U$ d2 ^5 O! C( qcredibility
. q" f! z$ c4 j: D/ d$ C, x# H;;
评价可信度,每次交易后都需要更新
& D# L1 c( M+ z1 zcredibility-all
: A  \/ b3 H( d# r% 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
  e& Q% W0 m( p$ f" X* F7 X7 I7 V1 {- q$ _
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
' m& P0 l+ P+ l: n2 M! Wcredibility-one8 r8 n/ s( g9 O/ R; N
;;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& o2 y% d! H5 a! y2 u; S
global-proportion$ }) Y1 X$ K% i: f7 k; F
customer' E9 D/ `' ~% `$ B8 X! z
customer-no
1 ~4 H: i# N7 qtrust-ok9 u8 H  t  ~! t1 |
trade-record-one-len;;trade-record-one的长度
; e) i% ]) T/ y) K8 j]- v* d" e  S1 Y
: P7 X1 \" v' P& F
;;setup procedure7 l! u0 s5 e, a  }% B' V

' ~$ b# a/ X1 n5 `- k: Q. @to setup5 i6 e2 T2 a5 k( C- c) T

* n! X7 H# V8 [  n+ }ca
) ~4 p3 R: H- D  b. K# S$ x, i& I

  @$ J4 g) u% c3 f) Y; _initialize-settings
" _. ]) |- m7 w" F0 I1 i3 G

+ S% A. f5 |) p8 z, E5 i( m( ocrt people [setup-turtles]
+ D- ~8 j9 o% Q! a8 n

5 g( j7 i( e& }' D! V( yreset-timer

. h1 Y( T  P- f/ R  k/ Y4 R( q. r" U% J" I
poll-class

7 C9 R: i& D# B9 P! E. |# N
1 C7 B6 S6 F# {setup-plots
. R- }& t4 g: e% f( [& G
2 G* {( X3 u" A3 b
do-plots

& B+ d) a8 O/ N+ Y+ P, ]end& f; @# P$ V; C9 P1 u7 H8 J1 P
' Y3 c+ y# d  h' n; D: F
to initialize-settings
' f/ N2 k4 V, s9 t$ b3 {, B4 h! h/ A
2 z: |- _, Z: Wset global-reputation-list []

, a1 I# J/ N4 `9 [6 Y' t5 b8 ~# t$ @) c) P! t) m7 u0 f
set credibility-list n-values people [0.5]
0 q- Q$ Q: D. T/ Q' a2 D
$ D/ n2 i$ t3 R- q$ l
set honest-service 0
3 P$ g' v. p) |' p& |- C' ~& v/ N
/ L: ], T; O: t& O
set unhonest-service 0

- h0 I2 f+ E: H1 i& m. b6 X+ q5 G$ J1 }: W, V3 q8 d" n
set oscillation 0

9 t) S* d$ w& X- o: d) u4 C+ ~
" |: n! z4 f: N) a& ~set rand-dynamic 0
  v9 U. ?1 }8 i8 g6 A1 D
end% m8 U8 {: P1 k$ V. i0 ^

/ O( ?* T7 G( l! d) x* Cto setup-turtles
9 w" W1 _: [5 s- ?2 |set shape "person"  l$ m/ \9 |0 s' f" C
setxy random-xcor random-ycor
0 v/ ?- F% p* [( Pset trade-record-one []
+ O8 I6 g7 K& h& Y: i3 F

# r! W0 E/ `- d1 t" T6 E) Y6 |5 `  r3 _$ Kset trade-record-all n-values people [(list (? + 1) 0 0)]
) l/ M5 x8 R2 n. w+ ?( F' Q
$ s2 d) N" ^( u6 s/ b( y* E% m3 d
set trade-record-current []
- S5 ~8 S6 e% J! eset credibility-receive []" {- x; W1 m; d- \  V/ {. {
set local-reputation 0.5! H+ B/ d% E: f% R
set neighbor-total 0
* O% ]4 a7 p( Jset trade-times-total 0
1 p# T9 M* h% Oset trade-money-total 0, _# Q' O! I3 t6 p
set customer nobody
5 N& d; x5 P3 `set credibility-all n-values people [creat-credibility]
, d+ c9 s3 o4 v- uset credibility n-values people [-1]- y8 n  F0 q8 F4 _
get-color, J  u% V5 m) Y  o% t/ X$ b
: n0 l/ c; [8 R$ M' W+ C
end
2 q$ S" }" Q2 Q% G2 h) M
: t6 i4 R  a0 |- Z9 Hto-report creat-credibility5 i7 n. D0 H. A6 M( x
report n-values people [0.5]3 ^6 S' E8 h+ d! ?) [9 R7 e9 X
end, V% C) s  U5 L, P+ W  p' R
; |" \; I1 @9 x4 i0 T* X4 a
to setup-plots- T  a  ]9 e6 E$ `- X

+ M6 G$ L# e9 V! n3 O4 Oset xmax 30

! G. [8 l6 s) Z4 O; S7 ?' z+ d6 z; X$ I" @) b& _: ?3 n. ^
set ymax 1.0

1 S. a6 e* i; O* ^7 _
- Y6 T! Y  @3 Y( J: c8 Sclear-all-plots
1 ~2 p8 h0 x1 O, p$ L7 \6 R- O. C1 u

2 m( a% P! a+ f8 ssetup-plot1
' S! ?" y8 U- J+ }( B
* v' g9 ?: d5 J
setup-plot2
3 n2 i( r$ _1 ~# R$ \. ^: P4 u$ K

# _. M% b7 m# V0 Zsetup-plot3

* t! q6 N: ?5 u% D$ X* {9 d$ e' Oend1 _% B* C4 B; m# h8 ?

! d. [! T8 Q: i+ F  e;;run time procedures
% V* U2 Y3 y# l2 p- w0 r- ^& r6 u0 c
to go( V1 n- J' l! I" W' @; H

0 ?2 L! W4 C' {ask turtles [do-business]

8 x% ~7 e- j9 k% Vend
& x" {6 }6 w- S9 N1 S
) O' o) m) T! l# a+ j( V6 q9 a! Kto do-business
- |( }( p5 O- E- p! i. f/ W: i

. i6 u  U6 |0 @; f/ z. B
+ N# u. ^, T  R" X8 W; prt random 360
% }  p0 b" d: a5 m' I; ]
% p+ F# h9 M. t, y# q% [" c4 ]* m
fd 1
8 ~, J1 f- s" h

; D0 h% Q; L/ `0 Hifelse(other turtles-here != nobody)[
6 R5 K3 K3 L# [, q7 V" U; y

  s* `" U7 M* Y, Kset customer one-of other turtles-here

! o* t# c# r+ W8 \0 a* B+ L+ l! v$ m, N3 c" k; Y- g
;; set [customer] of customer myself

' y6 V0 N+ r' q, w/ h: p, e
7 V/ n, a; A0 w4 r5 u9 {! L! R" hset [trade-record-one] of self item (([who] of customer) - 1)
4 C2 r- C1 O& [+ Y9 j% U[trade-record-all]of self& d5 O& P9 E2 o+ ?/ z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ q9 ?) e- X( W+ Q9 x8 N4 Z% a
. L& d6 b: ~1 R
set [trade-record-one] of customer item (([who] of self) - 1)
$ Z7 a& R4 R( U2 G[trade-record-all]of customer
: T4 u- v5 s2 i' K6 L' u8 u

$ v/ ^7 O( _$ [3 }set [trade-record-one-len] of self length [trade-record-one] of self

6 g7 X- f. \, T- d( s& f% l
) d6 c3 J# ]+ _- q( Qset trade-record-current( list (timer) (random money-upper-limit))
. q3 ?9 v6 i" b
3 q1 p0 ]- b8 n3 A
ask self [do-trust]7 `$ R$ Y8 [6 I
;;
先求ij的信任度
4 N$ M; O' U5 o" Q, z* y! u
- b6 e5 e  p, ^4 Tif ([trust-ok] of self)  W3 _) r1 P4 d
;;
根据ij的信任度来决定是否与j进行交易[% i' Y% b8 E( ^' @- s9 s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 @' t9 H4 B) P+ K  W1 ~1 Y" J# S* D( A/ V/ y
[
; e' |  H, {8 c$ n2 A

6 L7 u7 _( a4 d6 t3 Fdo-trade

, f$ Z# `( U) s2 \7 L( i
' \$ ~' f) ?0 D+ Iupdate-credibility-ijl

; I. U2 m' g$ O% J% k$ t+ W8 T4 {' D& `5 `
update-credibility-list6 m' T) n5 J7 X$ a2 Z* M, B
7 p; g  j& U& \
; o" ~0 G- k/ L7 x/ I5 y" Y8 i
update-global-reputation-list

5 G+ G- K) A/ C3 ~9 N( z" c4 e2 ]
* o. M( A% Q" s0 o/ k' q$ C- {  dpoll-class
, H: Y. O' u; u% e* Z% s
  S7 Y6 c9 y( ~" }3 u( ?" j( @* ]
get-color
& c1 K" H, _  n. h
  q+ _) b7 g4 y$ R8 @
]]* q5 t6 C& w# x8 a2 p' R

( l  m. ~: g6 H# f( o+ ?;;
如果所得的信任度满足条件,则进行交易
3 |$ l8 n4 Z3 y. Q7 J0 h% ~
% V: Q, a  a# ?! u[
" k4 I0 r" o( l" z' u0 M

# x" c  z- V0 t/ z8 Hrt random 360
/ U, u; s. Z* A( p' m% O0 l

0 S4 L* x1 J% }& D0 A6 Ifd 1

! k* l% D+ e0 D; ]* H- n, K6 S* q6 G  b5 Z) z7 j
]

2 g3 k# S5 e' q5 D! z" W* i/ [- Z
end

. M6 E9 d# ~1 h, f! ~8 `2 }2 @! i
$ ?+ P$ v5 Q+ u% c  d$ gto do-trust
  `( N1 |# e% q: |2 Mset trust-ok False) s+ B9 _7 ~* l$ Z" C$ [

0 D" c1 B4 I! ?

; G* W/ _  v' |let max-trade-times 0/ U2 s4 ^; P* B( K/ @( R/ v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; D) v* {* Y+ y
let max-trade-money 0- o  w! F. o% n2 C3 ^( \4 [$ n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  B0 S$ V& @3 R  X3 r
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 W& V3 ~+ j4 \( H& p" v
9 r5 K0 N  q. ^7 e6 ~

9 _5 d3 e* q8 z5 ?get-global-proportion+ a! h  U6 K4 z( u+ r! B
let trust-value( n4 ]; L% A" 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)
: @2 t$ |0 V; J6 s7 O! u
if(trust-value > trade-trust-value)0 i- J$ K* l9 P5 z, B9 i: Z
[set trust-ok true]
$ ~+ i7 ]( j& J4 ^! Z( pend
0 L" R* D/ A* J5 J6 r4 o& g, X! F
: p  O! E- u  U2 M+ Ato get-global-proportion9 Q$ p4 f. f( [+ ^0 g+ T
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 n3 k+ _% u, C/ a- l[set global-proportion 0]
. B3 t# G& c- \8 \4 y[let i 04 v7 z1 U7 y3 y: e) n
let sum-money 0
+ p6 Y% m5 m0 T7 G+ x8 dwhile[ i < people]& u4 D# @- O# n9 j: N! N9 R# Z8 M; R
[
1 b- @; S% w6 I9 }. h) qif( length (item i& N% r2 P) [3 G* w7 p# b
[trade-record-all] of customer) > 3 )
) A6 c2 f( P! l9 F- f
[
( d3 E# @) V2 m  V# Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))& Z# Y* A- @8 C8 b$ O) C
]
" C) J3 U2 C" S$ F' X9 W7 m]: n. a, Q( b0 W: T; [5 Y
let j 09 T' c' z  d$ @9 e
let note 0. c& G. y8 d) ~
while[ j < people]
* S2 K; N% {( j" Y8 i[' A, n: m( D: O! q9 ~* _5 D8 H4 h
if( length (item i, O& q$ F9 y0 b5 s! g5 O* p; s. k9 Y7 Q
[trade-record-all] of customer) > 3 )
( {3 x  x0 |1 J8 ~+ z7 a9 [
[! H0 P) W9 {( H  o* l
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- F6 h5 h* [" C+ N& S
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 p' r. ~/ P1 q, G- H% R4 a0 ]9 d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" T* R1 N* }: n1 [
]
) v" n( B) h0 E9 Z0 e! K- b% b]
% p2 o0 T$ y. z8 G& r4 f' x$ h% wset global-proportion note
! w4 _# w! e" j8 a]
7 n  e6 K5 a4 f; y7 _. k+ v$ x$ iend( S# U" C+ m  G0 ^2 V9 z, P

; s3 k5 M4 i+ [! C0 @- rto do-trade) }- x* D/ A# E9 ~
;;
这个过程实际上是给双方作出评价的过程% J/ S) c1 r" }& u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ x% h3 {7 Y6 |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  m1 p7 I! }( ^1 S6 Bset trade-record-current lput(timer) trade-record-current: q3 f! @" m, _
;;
评价时间* h$ B. T+ c4 }' @% ?4 a; \
ask myself [5 f, _" q/ a, C/ w5 K6 Q
update-local-reputation) Q" |* l7 a% b# v
set trade-record-current lput([local-reputation] of myself) trade-record-current3 Q# c- j4 G' J' u3 e: Z" r" O
]
" G0 M1 b6 `' T1 pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ @# y* O% N! g/ l6 h: {
;;
将此次交易的记录加入到trade-record-one
% o. U; x4 Z" Y) a9 J0 G" I: {! g* w" \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% U8 c8 |3 e" b9 H. h* S+ N
let note (item 2 trade-record-current ): {+ b! K" V0 Z: W1 ~  U, ~
set trade-record-current
& I6 u/ f: S  K" U(replace-item 2 trade-record-current (item 3 trade-record-current))
' X: T9 v. u4 G, X/ T" A' \
set trade-record-current4 [' f# @. T+ ~/ Y( ]2 E
(replace-item 3 trade-record-current note)
+ t8 Y. }: l1 m
4 _5 Q; t  Q* {# e9 N3 ?
& C0 [; V9 E; n; {% i  n  v
ask customer [
* r5 i& w9 ~/ }update-local-reputation
& X! J! s* x5 H$ g# g% |( O& l2 |set trade-record-current
8 l% r1 Q. ~0 d1 w% Q6 @8 a4 G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: C% t* t# B) U1 ~6 K0 q9 b3 |
]
5 [1 S* L; w' n7 M. i8 l+ B
$ J: w8 D4 }' l8 |

$ S0 O" p- y, Y% Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ T; [3 U- R4 v2 [
$ u1 e5 C& e5 N6 e9 H1 O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" e, q2 N+ K( k" U) u% l;;
将此次交易的记录加入到customertrade-record-all
3 E- I" [7 F4 v0 I& p  xend
/ M, r/ j" g2 A1 E# ^/ A
- f9 w' \5 h: s0 `: d! r8 M( Ito update-local-reputation* ^5 ?( [# c: [' b# S
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 G; ]3 I1 P0 L$ C+ x  `, x6 j, v, ?5 g) F, ~1 z) _$ Z

8 d% J/ M# Z- q) w;;if [trade-record-one-len] of myself > 3

1 x: u6 O" j' gupdate-neighbor-total
5 G/ _# B5 a; S* P" S4 ?. @;;
更新邻居节点的数目,在此进行
" I% d" P0 q9 z, ?let i 3  s( i. k* J! h3 q/ T: x, E- J
let sum-time 0) y% g0 F  l6 ?! A% x" f6 }) v
while[i < [trade-record-one-len] of myself]
6 E$ b/ R9 h  V" }+ Z2 ][4 U# B* E4 p+ w" y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ h* L2 ~' U2 n! a9 k9 uset i
1 g' N1 `. y5 a8 l5 o( i + 1)

) L9 M- M% @7 x& b; N1 e! U], [1 R+ O! U2 z7 \$ l" W7 p* s) G/ E
let j 3; A! }3 {$ L9 \: ^4 ]/ I4 ]1 s
let sum-money 04 V9 N" O9 G# h9 n- D# I- y
while[j < [trade-record-one-len] of myself]
: S! _8 g% U' T! g* k1 M[
% ]; R- @, h- C1 ^7 e. i8 c- Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
* m* [+ A- ?% r! c# qset j
- m( S8 o/ @7 e4 K  F& D5 H( j + 1)

9 s) B! Z% ~! n# T! |" K9 ~]
) L, P- z3 ~9 a' [+ v& v  G' flet k 34 N) N& h% ]3 w0 y6 k' b
let power 0, x" c) m% |8 o" T; G
let local 0. Y1 v1 _; D+ L! @2 H5 ~$ @
while [k <[trade-record-one-len] of myself]
. }, v" _' U, l% @[* w' }/ a8 q0 m  k, E* D( S1 u! h! 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) - ~' f9 o. U& x; b8 ~
set k (k + 1)9 k0 Y1 B4 i3 @: m% r* K, Y
]
) J, V$ Q6 Y. c2 K+ _/ c( eset [local-reputation] of myself (local)' @6 z0 s7 C  U! G) U9 L& p7 Q' _1 y
end2 P6 J+ t  V* R% B7 J/ K) ~4 ^4 `  N

- [3 `5 j; y% G# k  Pto update-neighbor-total
+ ^2 g9 x$ T; h: Q1 O4 o' n4 m3 q; k0 b" F
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( j  E. V+ Y5 i$ _
8 o$ A) [; W: d* J; R' Y

2 o+ a2 b3 e% W% @/ K5 S9 ]/ n3 P1 zend
4 i2 X6 G2 o1 s- N
3 q! Y& Z. r& ~2 B$ B2 Xto update-credibility-ijl
0 U/ S( K& L4 N. j" p! z! V3 G4 N* l! l) W2 [1 _
;;
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。" t1 J7 t2 a% T6 C
let l 0. B1 w% m$ w  h7 T3 E
while[ l < people ]; u- M# S- e7 i8 j" z3 P
;;
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 B. C" ?8 g' C2 U1 Z[" ^7 Y0 g! t8 Q5 S8 t( R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" W) e2 f, s9 t5 f. K* [if (trade-record-one-j-l-len > 3)0 N* K) W4 r1 F8 R" v$ ]
[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. D! @2 f9 m# k: f2 g! F
let i 3
" z" n  p$ G! o# P, d0 f. @let sum-time 09 @3 Y% P: @+ h& S5 G, t. n* b6 Z
while[i < trade-record-one-len]8 h/ V# o+ t7 i
[
+ S! s. @4 {% [  A& G! {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ R8 Z+ P  \. P$ e, k9 l" \! ^
set i& _/ J. F4 N2 J* a$ |" _' j
( i + 1)

/ W: {6 ~  C# U% _/ I7 P  }]  X+ s8 d% m% e, m1 D8 X
let credibility-i-j-l 0) [, I, H& b1 I, B# _
;;i
评价(jjl的评价)' P! E* ?% {! h# O9 c: W/ h9 n
let j 3
2 Y+ I6 s8 X2 T5 U  N$ Nlet k 4
" X" l# ^4 T- A3 w0 g9 pwhile[j < trade-record-one-len]" \8 f/ I$ D4 W
[4 i; z" p4 c, {3 B6 k+ I, v
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" p& A9 d9 u! P6 {* T% Jset 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)0 m+ D) {7 h  q& e$ F
set j. [/ M" ^1 D1 D
( j + 1)

! x5 U. w% r! G: V5 Q]) H3 ~5 P2 S& D$ q2 ]! Y! y; M: s
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 )): ~: i* P* [# A' F' r

) w$ X- a5 k1 C# |2 H$ d

* @/ W7 W* D1 J  p8 nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 S  W' R" f$ J7 N8 q! t;;
及时更新il的评价质量的评价5 g/ v" O) R* h0 D7 l6 W# c
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% g! u5 T& I/ y# d  H. q! l+ v
set l (l + 1)
! ^- }- s: u; h]4 F' h' I# Z; {
end
# t6 c. Y" c5 Q+ A9 l- @( w  t
: [7 `# [4 I/ o2 D7 M' {to update-credibility-list. O  p# l1 S9 d  w# H
let i 0
/ n  b* i3 G% l' J2 [while[i < people]+ ~0 H* d7 I( `7 m
[9 Y" I$ c/ m# Z' @% g' X* M: a
let j 0( Z, U6 I# }4 R3 x" D+ a% Q
let note 0; a1 j1 I4 w  \
let k 0$ @% b/ L7 p* s/ M( f
;;
计作出过评价的邻居节点的数目
/ K8 D0 I+ d; [( [# E: Y! Awhile[j < people]
" ]8 r* S( c. b. e; K# y[8 A& _6 [% S* T8 z
if (item j( [credibility] of turtle (i + 1)) != -1)' t( X2 A# E0 ~9 n( h. l  I' h
;;
判断是否给本turtle的评价质量做出过评价的节点# s, P) P7 T' o- j4 O6 U
[set note (note + item j ([credibility]of turtle (i + 1)))+ }' U+ J' B- ]
;;*(exp (-(people - 2)))/(people - 2))]

5 v9 r, y3 X9 x  C, I) t& I# fset k (k + 1)  i$ J% z4 q7 g5 q' k/ b  u* f" |
]
8 N+ [% t% t9 g+ b. B8 P: xset j (j + 1)& }% Q9 o) U$ k- V
]. q1 g8 j. m8 C8 y. E8 j# G% y  y
set note (note *(exp (- (1 / k)))/ k)
8 ]1 Z; m: \: B. aset credibility-list (replace-item i credibility-list note)
6 C5 Y8 L$ X; U! {' u$ [set i (i + 1): I& @; D3 [3 Z6 }
]# n, K# Y* P0 m2 I
end8 S% H4 z4 R8 ~
" j% l/ C4 {/ F2 N
to update-global-reputation-list9 I3 n! |) Z  I' b
let j 0
# X7 ]7 p" @# e; }' j- R& Xwhile[j < people]) n; i) f# I8 K( n1 M
[7 {7 o7 D, M+ J
let new 0
7 }- J% n' l  `9 q6 R3 Y;;
暂存新的一个全局声誉4 U+ L; D$ V. j# G3 ~) L4 Y; [& M
let i 0) [* w1 z$ Z$ `" `" F0 `
let sum-money 0
# b0 [" G6 Q: S( _let credibility-money 0
( @) Q: I& D0 q4 a8 ~8 r+ iwhile [i < people]
1 W4 A8 m' ?6 ?! P! ?* I$ `# E[
" ]. O, B# Z! v+ S# u+ D7 ~* iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( K2 J5 K; v& l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 j0 ?, `" |; E: A, L, R1 J- Cset i (i + 1)
# \3 O: K+ J  z7 T( L. m]( {1 h# n) H: R" Y7 m
let k 0* m" m- L. @" e7 ~# x1 h" c0 {
let new1 0' R8 _! ?' ?/ ~
while [k < people]
) r+ j! ~/ Q" \, E6 e# I3 Z[
' T7 @/ r" }& G  R5 Y0 O! Mset 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)7 d& }3 I& `$ [# |) b
set k (k + 1)3 l1 l! j; B- t2 k; |" {
]7 L2 L, R, Q8 t& m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 d# j0 V" {! ~2 P# R
set global-reputation-list (replace-item j global-reputation-list new)$ ^/ j4 K' S  l8 \- G# c$ ^
set j (j + 1)8 R( M( E, O0 W- H1 Q
]
" {* x9 c( T6 e8 [end: y( a, m. g! x# p* K) Y

8 t# _8 R4 u$ z* @: M- b, f/ S! \4 `, Q4 X
# H  ~- r! ]8 L+ g/ o& T) S
to get-color& s! L3 k4 I/ e6 e
& B+ o- J2 J- q8 Y$ H$ T
set color blue

2 d1 h6 _( U% i$ Q# U" [end
# a/ n4 {3 Y& N
% e) H$ p2 U+ wto poll-class
2 Z; n* H) K% W/ O# j  yend
2 P  ?5 v9 q* O. X
. ?' ?) R2 _6 }+ b- |1 Xto setup-plot1
! C9 J9 X# D6 @2 [, x: j2 |7 |4 B9 e1 J( }' \* K, Z- e
set-current-plot "Trends-of-Local-reputation"
# p$ s; }0 ^7 q6 N! b' f

- h+ t6 r1 e& q& O- jset-plot-x-range 0 xmax

- }) }: B8 B- i/ d4 o6 E- E
7 A% _5 h$ k7 S7 @# u+ m1 T' gset-plot-y-range 0.0 ymax
$ N  |( {3 d4 d+ n: O6 K' K
end
  a  ~7 @. o, q6 m
  [( X! G4 h* Cto setup-plot2, B. f  }" Q2 t; B. C% D
# u' }  `- u9 e, i
set-current-plot "Trends-of-global-reputation"

9 q5 f9 B  u0 b$ O, Z* I
$ p4 T; D4 r. x# B  fset-plot-x-range 0 xmax

! n# j1 t7 q; V+ @  I7 |0 a  r% b$ d
set-plot-y-range 0.0 ymax

& I: J3 z0 K$ @8 i( T% Uend
" w( x  s5 }  @/ f. S8 W; Y+ l. k/ O. }4 M4 U
to setup-plot3' I5 I5 e5 \- o$ e
5 Z; \' }5 S0 E. F4 q4 M
set-current-plot "Trends-of-credibility"

. q+ I; C4 j( S3 g1 C$ _* P* W. M' s9 ^( S' I
set-plot-x-range 0 xmax
; K* A2 I, ?' t# w2 C) n$ ]* w
8 z9 b# g) G0 R2 s, J
set-plot-y-range 0.0 ymax

( _- v6 N8 s% v+ U% S# z& Aend. X7 |  x: y4 x. T! Z5 w! I

  ^0 c5 ~7 q7 o( H; C3 yto do-plots
, t  d& a! V- Wset-current-plot "Trends-of-Local-reputation"5 Y7 r5 ^* O" E, @" Q
set-current-plot-pen "Honest service"
$ M* b+ C( ]: Send& ~- g" @0 i2 O# Q: E4 x+ c
4 v4 a5 R, @) S2 H
[ 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.' K; ~' n0 n- v! e; Y- ]  X& z

$ r. z0 P# }% E9 F6 m  ]$ o) w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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