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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:0 j% _3 p  w7 ]5 S8 C
to do-business ' H5 ?# M  |2 c- |  O0 s+ i
rt random 360
% P8 l: ]8 R& D1 k' { fd 1( d1 h. j- M! P% X+ S
ifelse(other turtles-here != nobody)[  x! G. c8 _; a8 b
   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.. Q, w* ^9 |7 ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 ?. F+ j7 N; }. _+ R, \; l   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* J2 ^: `( Y9 b
   set [trade-record-one-len] of self length [trade-record-one] of self
* E+ R( O' S2 |/ Y. |2 V6 Q& e   set trade-record-current( list (timer) (random money-upper-limit))
$ P: F, R$ V; u  H8 `0 x
" _3 F% W* F: U: {9 e' ]/ y- X问题的提示如下:
9 p4 O. a1 g0 ~9 e0 W4 F# y" O& a
error while turtle 50 running OF in procedure DO-BUSINESS" M: g( _/ w  |4 Y+ m! }8 a
  called by procedure GO0 P" S8 S/ h& X4 N; u: B% y- l; f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  @8 s* x! M% \- J- p
(halted running of go)
. K9 d- b3 Y/ H5 D% v1 N* f+ O+ o: J$ Q9 T
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 H+ M& f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
* S. N7 D  i3 S9 \- ^globals[
% R+ j3 y8 ^/ S' N! ]- O: \5 Exmax
' e! b& h. I% ~8 q9 c( w5 bymax
8 [( V$ J, w  x5 X) kglobal-reputation-list0 [& q0 @7 r3 _. Y
3 d6 |' E1 G% A
;;
每一个turtle的全局声誉都存在此LIST
$ S1 J  k1 R  D# x3 Mcredibility-list
0 p4 D9 i! g4 G# P& h6 ^) z;;
每一个turtle的评价可信度
$ W$ K! t4 Z$ u6 Shonest-service& Q5 @" {/ {- e
unhonest-service) h( L+ |3 T' v  N0 y) s
oscillation, f; [2 N# c. x$ h3 O4 \
rand-dynamic
* W8 h/ T8 `2 j: v8 V3 K; M]/ Q4 O7 ^4 t& m5 i) l0 i
7 L4 X6 Z7 [* Z6 y  ~* ~( e, G
turtles-own[7 z7 m$ U0 F+ V/ ~$ k4 Z0 d
trade-record-all+ P4 `. B' H6 N2 e
;;a list of lists,
trade-record-one组成* D% C+ r/ q, l/ T7 R$ Y6 @: P
trade-record-one2 V8 \9 O$ S( Y( |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 m5 b, l* j7 _* `/ Z, W% O: E

" }( e' s! y6 Y. C' {;;[
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 w% U. r8 T. V; j/ T. F6 a
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]) @% e2 h6 q2 \7 W- ]
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list3 h9 Y9 V; e- n3 F& o& w) ]
neighbor-total" P7 r9 A# g7 H
;;
记录该turtle的邻居节点的数目+ _# U* n  I) [1 _! g
trade-time
: g5 l. k) ~; h. ]4 ~  d2 B! b  B;;
当前发生交易的turtle的交易时间. S' J) A' v2 O
appraise-give
1 o( o) o8 Q, K% d;;
当前发生交易时给出的评价) x3 k, E, w6 `4 E' j7 o/ M
appraise-receive- x& y0 s/ K" U5 A
;;
当前发生交易时收到的评价$ N/ n8 z& g. w4 w' S$ y; n
appraise-time
* m1 p1 {8 J* r3 S- ?: ~;;
当前发生交易时的评价时间. d. a+ Y/ H2 X3 W6 j: o) y! m0 W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% r, d6 k8 n4 c3 L* b% z5 q
trade-times-total
- e8 o5 z# M* @;;
与当前turtle的交易总次数
" N3 p5 }; z, c  j! mtrade-money-total$ D+ m/ G: i) r9 O
;;
与当前turtle的交易总金额
% W& G$ B& D& n. A$ Ylocal-reputation5 D7 D8 h% N5 b0 }  k
global-reputation) F5 b% A" P' v6 k: @* a7 j3 R
credibility
6 M0 G9 L: m8 j+ i! Q+ P1 h$ P;;
评价可信度,每次交易后都需要更新+ T1 s9 r4 V8 z: J# @
credibility-all
+ }, @0 S- N. w! P" ~# 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
3 D& e" F/ @6 H
2 f' w  e6 t% J, R;;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
  S7 ~, N  b9 W/ p+ j) Dcredibility-one7 I6 Y1 x  z3 o2 @
;;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people0 y4 {4 c; K+ r0 ?$ v; G+ t+ u
global-proportion5 U3 C1 Y4 S1 |$ v
customer
& O6 f+ p& N: G3 g2 ?  h: }2 ncustomer-no! c6 Q. F) F4 G9 V2 v1 t8 V
trust-ok( T$ m- V$ G! _6 H( U
trade-record-one-len;;trade-record-one的长度8 J. \: |$ |4 v; [
]! _; Z! ?$ o8 N: u! R7 r/ B

/ v4 V, V) l, k6 k+ ?;;setup procedure' x# i* I/ ]9 g

2 z% h& i$ \; Fto setup6 Z5 G2 U# B9 a# p- {7 U& _  h
; y" {3 o1 ^* a2 P0 Z
ca

; I) c$ I) ?2 F+ @' q6 y/ G: n$ e) ?
+ [  w! L3 e8 ^) k$ dinitialize-settings

( b1 N, K1 ?- H0 B. G& y, d5 _, i! y7 j. z1 y# _( t1 a: R
crt people [setup-turtles]

. d' D& Q) p/ e/ o+ l
# x3 |" s* }9 K0 [  L2 creset-timer
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2 L+ V& v# b& r& N$ u! }! v+ B
poll-class

) f8 }4 A8 f0 f/ z2 _$ V% V6 H+ @/ w' g
setup-plots
* @! l0 ~2 v$ V8 ~( C. D
1 q2 B6 \! ^) C# |( M
do-plots

" b  k/ ^7 x6 \6 Z5 [end& a- @1 c  X5 h: S; I7 I/ A
4 |1 }* H/ K3 U3 A4 c$ j
to initialize-settings
& P) O3 ~! r$ b1 z
( X% ~. |: m* D1 nset global-reputation-list []
$ f% g0 {) ~1 r4 D8 j
% C% E0 c& Z  p  `( m
set credibility-list n-values people [0.5]

# H' {( Q4 Y: F: N$ p
# ]& @; H% B6 Q) W. ^' _6 m4 aset honest-service 0

1 m; S" j$ K, F" i8 V4 m3 e/ z& o4 L% P+ S6 h( V
set unhonest-service 0

8 Q- `+ ?4 R2 G! i3 t& D- k
* w: H; U5 M2 E) @2 iset oscillation 0
& ~5 q( L7 O1 Y/ W5 p  j* S

& O8 W4 C+ ^- O$ j* a3 X1 Jset rand-dynamic 0

3 W1 u3 H8 S& v+ F& fend
: w3 Q8 d+ q! I, |* [" h5 V2 n5 H) d/ o2 M" |# Q& X( Q# D+ C. u8 N
to setup-turtles
; Q8 h' a5 ?% M8 Y, @% ]( ?& tset shape "person"  ?* U1 R" e& k$ t0 f
setxy random-xcor random-ycor  y  i/ [( G# N* [9 ]
set trade-record-one []
% z( m9 w, |, h; r2 h3 j
; o3 L( Y( b3 T! q  m4 v
set trade-record-all n-values people [(list (? + 1) 0 0)]
# g. S/ y4 w7 P7 Z
! j% m& W: }) q2 u- T
set trade-record-current []& D2 @: K8 K' r; s$ o+ V
set credibility-receive []
# B  [; ?) E; z# [) ]set local-reputation 0.5; T% ?8 k: I- B: \$ Z* f% d1 H# y
set neighbor-total 0
- L4 T% W; ]% U& I' r# a& w0 Pset trade-times-total 0
/ Z( {8 X4 T& f7 yset trade-money-total 0
  d3 m# v; z9 C  `$ Q- p. ~7 Lset customer nobody7 s6 D3 X( x3 m& R/ p7 }
set credibility-all n-values people [creat-credibility]
! E4 ?  d! D5 }1 l3 ^5 mset credibility n-values people [-1]
' Z. W- [! y" {get-color% z4 l$ E, X2 _6 P. N
3 k2 b% r0 p/ F1 i. H7 r. ^2 j) E
end4 s. n& e" k' t$ @8 @9 D, Q

' j! |' x# _* I. [4 H8 Sto-report creat-credibility
" H7 y9 l4 ?, b/ i, T; M& F$ }report n-values people [0.5]$ o& D/ Q' v) o) C( {# c7 g
end
% s. `6 F7 y" Y
7 m) G5 _/ [. }, _, }: J" uto setup-plots+ {) w: |0 ?. h0 o/ f3 Q2 r5 {
5 f7 i% p. ?3 X% c
set xmax 30
7 _0 `8 G% ?5 T9 d2 ?
' q0 ~* ]5 M6 W' ?
set ymax 1.0

; r7 e  F, r: p( _. Y; S6 t% J' n6 v
clear-all-plots
7 b- O( K5 }- {5 E& q* {

/ e+ i" h1 x( }2 W4 F- usetup-plot1

! d, H9 t3 w" m/ y9 C  I5 I5 r  d; O: ^
setup-plot2
$ i0 h9 c1 `- [! l; ]7 M5 ]
1 S( Z" n5 d; w
setup-plot3
; R. t! d8 m! U; W) @6 [* r8 q
end
( }6 G2 T" z* O0 N# }- a* r6 D- @6 L! G  g9 O9 t- H
;;run time procedures) u$ H5 I7 Y9 R3 L- A3 K

) z. A# e2 w1 F+ b! nto go
! L1 X; k. T5 {( k) l$ j9 P3 h( ~* b* ^, U# A3 F0 m7 ]
ask turtles [do-business]
6 H- b! Z: F; a1 H( w/ F9 y- j
end5 W" \; b8 M0 N
$ V" \$ a# `! `4 @! x* m( C" u
to do-business   R0 W6 y" ~2 Q8 ?9 M
; P7 N, E2 S6 P+ S( B

( Z. Q) k, ~/ U% Srt random 360

8 U6 j8 _/ p, n- Y
( K. ]( _+ w$ n/ Q7 n/ J- Ifd 1

7 {  B" u* w. O5 G( D- S  u5 Y7 p  b! L1 {" u7 k: r
ifelse(other turtles-here != nobody)[

0 [; R6 u( g3 t8 |( U
" H% v4 s: l: i* g3 O+ Kset customer one-of other turtles-here

+ t1 u/ {5 S: _  {1 C0 [3 J/ ^3 C; `7 d6 |6 R: ~
;; set [customer] of customer myself
, \/ M) D9 V1 e2 X6 V- m* t
5 W9 W6 C0 x" ]5 B; B' k" s
set [trade-record-one] of self item (([who] of customer) - 1)
9 \% C, Z' r) Q[trade-record-all]of self
! |% B6 o; f8 }) |! n( i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 H6 j. o* f" C: m$ F& p3 s

9 x/ g3 b9 ~- b5 U; X. c7 oset [trade-record-one] of customer item (([who] of self) - 1)  n+ V! H0 F8 F. M- F. Y
[trade-record-all]of customer

$ s  P' q2 Q* V2 Q; b6 ^/ k9 r# `) m7 e2 I, d  `( \! V/ E
set [trade-record-one-len] of self length [trade-record-one] of self
& W% v3 |$ V# f! A7 b7 m
1 V' ~2 p) |) ^# S1 X0 ~0 x
set trade-record-current( list (timer) (random money-upper-limit))

, Q6 N; x7 J& `- G  S) {$ x2 H! b
ask self [do-trust]
! S+ O1 N! }7 Y# y: U; \$ i* R;;
先求ij的信任度
9 Y4 M) H. Y' m9 D8 B
* O2 [5 t) D1 s2 ~' t9 \if ([trust-ok] of self)
* D3 E7 \( v5 c( \# _  ?1 F9 h;;
根据ij的信任度来决定是否与j进行交易[
- p/ R# f' L1 N; aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 ]0 n' H$ u& N9 S7 v4 H. _' f& Y9 s+ x
& e7 q, Z/ b5 D: ~/ e
[
* n$ C% V" N* I% b0 ^0 s
( a4 c: c: {, T8 W; }
do-trade

8 v/ ~% ^6 E  ]$ F* U7 N2 ?8 k2 t2 ?% W1 v9 T
update-credibility-ijl

6 c9 t! s0 O) K# T. m* m1 p  K, I+ p6 z2 j+ w# h7 a+ {9 i
update-credibility-list; [+ N6 j. {, ]% A- E. ?# x. X
, x+ c6 t7 m9 ]3 I" ]- i

$ i: d1 \0 H6 W+ b3 wupdate-global-reputation-list

/ [5 T. Z4 b# x0 P: }; k
' g) U$ f$ U8 R% Wpoll-class

' z& ^# `$ N" T6 c9 D6 o* G/ d: C4 B3 m4 m% j
get-color
0 {, [+ `/ d0 E" A+ |

; w. ]8 p2 c6 s% X9 v2 ~]]1 Z2 S# N$ l; f6 M9 c* w( w8 K/ S: A

0 F: x# c7 b# _' x* L% w+ C;;
如果所得的信任度满足条件,则进行交易, V- `9 I, m4 ?6 ~2 g+ P( }) G

! ^+ @; M3 |, x[

  M% S4 R, g9 X- p, N
+ k) L2 K. x; o2 \$ M! z3 t: Vrt random 360
5 d  o# G" L6 s# [, o: f
& p9 @% `6 A- D- ~
fd 1

5 d4 B. L! _7 T$ s& c) U! F9 t8 _1 \$ F7 F( x
]
5 l3 p- U0 o' L

8 R+ P/ x  w5 W; [9 M/ ?9 Dend
; T7 b& Y# T4 r$ `: J

; q0 v. S' T. @! _; v& y1 }" @to do-trust
% W6 X2 |9 Y6 A/ D& ]. o. yset trust-ok False/ `- z* ~" N# |" P, ~

$ |2 a! I2 S3 I! ]8 h

/ v( |$ v3 V5 _. l" }. p  Nlet max-trade-times 0' G6 G# t, O) J) t  x( D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& V% {6 ~/ O& z+ `- s! K( {  l
let max-trade-money 0
* M6 Q- Q2 M% `3 }2 uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* q- y' N2 ]8 Z  ?& {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 o! X$ U# a. y0 G( t0 Y) w# c+ M: l
: x: w6 R$ }3 x& q1 A
get-global-proportion
1 l' h" f( P& P- |0 B$ T( B9 D  ]3 }let trust-value. G6 Q" @5 V! G3 B  M
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)
. ^& w7 ?2 {1 O1 i7 K
if(trust-value > trade-trust-value)1 U6 l2 z7 K" e7 y
[set trust-ok true]
9 M% h+ {1 C. [7 ~" tend
" s" K" e  @# j" \7 D# Z* J: ^# T4 L
to get-global-proportion' A/ t7 s) n( Z$ s# Y5 f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" e+ T. P# l& b1 U9 {[set global-proportion 0]" _+ c# O; M* ~! Q1 y! r% M
[let i 0( U( W% F( w0 M: Y! h; k: q
let sum-money 0
+ y/ b% ?1 e5 q$ m1 [while[ i < people]. }, c4 C. Q! ]' S% w
[
+ d4 R% }: s* }& ^- |if( length (item i
, _% {! f' u! ~" l[trade-record-all] of customer) > 3 )
" c, T* \& J5 |& B8 |3 Y9 {
[; J9 _0 I- a; T6 m1 ~
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# [$ j2 b+ P/ L- X) _5 i]2 j  g9 Z4 [, O1 M2 ~5 E
], X$ U0 z) L! m& [9 p
let j 0( V) a3 r* h  S7 P& r8 S8 H' Q
let note 0
- |1 x$ A/ q. @# gwhile[ j < people]6 y8 z! t6 t$ D- N6 W0 Z
[! G% i( c0 l3 x
if( length (item i
" N* |1 H; O! F0 q* L( Z[trade-record-all] of customer) > 3 )
! y" a- f7 l# H, _
[
  B# P, A. I/ ~1 v5 u' j( aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ b. ^: w7 h0 X& Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" I1 c. U$ Q% i# q/ }4 `
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ z" x, c7 Y  @% k+ `]" D4 s* d; H1 ~0 r. \: Y0 \
]
# W6 S5 M; N3 D0 jset global-proportion note
5 o& A% p8 o+ K: d. {]
7 G9 i9 I% m' Eend" K/ r8 [' y4 N/ D) }2 x3 b$ W

' e. w. c5 ^+ D) @' ito do-trade
3 @7 Q$ ?3 Z6 \- |. y! @4 t;;
这个过程实际上是给双方作出评价的过程
  ^4 i. m1 _. u( E+ ]( @4 P# |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 ~$ z4 V0 b8 q6 |5 v7 n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ N! Y* y" h* p; T% mset trade-record-current lput(timer) trade-record-current
* W, f; k& b2 `9 I;;
评价时间, Q. m2 r. p' p8 n: K* f
ask myself [
" M) I& |( {  S# W7 Nupdate-local-reputation
# ~3 m: V3 p; l4 e, iset trade-record-current lput([local-reputation] of myself) trade-record-current. {& c4 Z: `7 h: b1 F$ _3 P/ \
]3 R2 h+ F8 C7 I$ e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 g1 }1 x) w" }- c& K3 e
;;
将此次交易的记录加入到trade-record-one# S* F' W0 L" |+ e# U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( e/ i% a. j: z2 \  {+ N$ w
let note (item 2 trade-record-current )
) [% g7 V% B+ f* ]. G+ i7 Pset trade-record-current
( P) C6 T9 v  i(replace-item 2 trade-record-current (item 3 trade-record-current))

9 O/ Q; M/ l3 A$ e/ |9 Aset trade-record-current$ X$ ~& T" \# r. g% c- h! P; C
(replace-item 3 trade-record-current note)2 X0 t! `* l  D: V
& E9 c; Y8 s* A& k. [7 d! ?
  B% w( B' M0 s4 M. d( e3 k
ask customer [# B  y0 b$ o- l' b5 C$ j8 o
update-local-reputation+ f% W  Y, Z0 d$ m0 {$ c  m
set trade-record-current5 s, `8 c; M1 B* p! e7 ^
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& L: Z) H2 B6 E+ ]
]
# |+ V$ l. ^7 J+ z7 X
3 W( R0 f! a* k4 ?/ i
9 Z: m7 w: x+ Q$ \; q7 u1 c1 s  t0 H7 D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" y' Y" K8 U) h1 U6 n
, [4 t$ o; ^. e$ Z2 y0 J4 U
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 ]9 t- Q0 |5 u; ^  q+ e1 [;;
将此次交易的记录加入到customertrade-record-all2 T. k8 z- Q8 m) e7 ^
end
: }1 V' E0 U3 N1 a4 m+ a! X/ x: y- O2 b
to update-local-reputation. G  r( X. A; l  V  c
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 Q7 w& f; Y: H7 j& N2 f1 t& r3 r3 Y7 n  X* }5 v, ~3 W
# R) i- ^  R% o  E
;;if [trade-record-one-len] of myself > 3

; {  I6 Q* {& Q& V3 B* T+ T/ ?) Hupdate-neighbor-total
! T8 }: @! l; u+ _;;
更新邻居节点的数目,在此进行
7 [5 K0 U8 L& C$ Flet i 3% A1 \2 G2 y7 j) a& P7 s
let sum-time 0- d* i) R6 P! D' e& a- W: U. ^
while[i < [trade-record-one-len] of myself]; H. h( r+ X$ n  V. N- w* ^1 h
[
/ }4 `9 S& [, R+ T( mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 ~% o2 v/ x5 y5 J6 Y
set i
1 ]8 [: O; N8 f# u% i" Z( i + 1)

8 G/ O/ F9 |0 L+ K' v]
3 |# {6 w# m5 d- e6 w' Ylet j 3
. S/ a  D# B* Z1 tlet sum-money 09 \) n0 t. l$ g$ O
while[j < [trade-record-one-len] of myself]4 Q( R4 `5 `: O, Q! A
[. j4 @) @- @. b9 L
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)
2 g7 h' n+ Z. Y: @0 p- n% lset j
- w) s( U& N+ \, O3 i( j + 1)
: g1 I( f9 l: T7 }, c9 }
]% l6 L% ^# t) ^- J7 @6 M8 Z% |
let k 3
$ ~: ^& Z& o- n% \6 a" qlet power 0
/ }/ T2 [5 K9 t7 qlet local 01 ?& I0 O' h3 W, r+ r
while [k <[trade-record-one-len] of myself]1 q! x* l5 n- X! a
[) k5 q) F0 T3 L( j0 O
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)
. G) @1 n% t. H2 o6 p4 Cset k (k + 1)
% t9 i: A* F9 H( l' F" t7 ]]
$ d0 ^* t) _4 pset [local-reputation] of myself (local)+ M& s9 B+ e, O8 G+ ~0 Y" j
end8 h; R/ K( J1 N% ]! g4 a1 b. U

( V! g/ f/ n/ V2 ?0 k0 _+ G, nto update-neighbor-total5 e3 m% U( {/ i  d% Q

4 G6 f, c/ K" J! w! [% }; ]if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) x$ q' T8 K( Q/ q" y  }

$ ~. x& A  x3 g9 w- {* j5 @: M$ j1 K
+ O8 c" V1 U( I3 y  _# j
end
' o7 k$ @  Q, Y+ a" [( q) Y6 a4 V; r7 L( ~# b8 M
to update-credibility-ijl
# ~5 U4 b- ~" a, f5 Q
+ W- j- s  A$ \7 e) ?, K3 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。
  L) A+ b3 e' M1 L4 I# D1 ulet l 0
& Z) N0 ~- r, G# P& C8 X. ^' z( Q" Qwhile[ l < people ]
' P) N1 o: E7 l7 R;;
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 l7 {2 p- A, ^% L[; g) Y1 ]' I: n6 g% N; i' M
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 ?' o- T# x$ H8 Z1 e
if (trade-record-one-j-l-len > 3)+ w9 P7 {- P- n& E2 _3 }
[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-one5 u- I9 {2 G+ G- `8 h8 p8 M/ \
let i 39 ~* _- S% u: T$ n! h7 s
let sum-time 0
$ E+ d% q$ \. y4 P& kwhile[i < trade-record-one-len]3 z: S" n, C- L6 Z# X8 R' H
[- M1 f9 M+ _7 C! q; x- @
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) D. x" e- L- C' f5 Q# f, q* bset i
$ H2 u5 O5 c) s$ P3 P- x# L  F( i + 1)

& F/ u$ s' V! I& `2 A) N. ]]
% c  U- g- M7 I) n* hlet credibility-i-j-l 0
5 s  x% q/ }. Y;;i
评价(jjl的评价)( Y# B% _. D( }, g) ^
let j 3
& f* W( t) H# a/ Y/ jlet k 4
: r& ?# e1 P6 s! p. X( [4 c+ Ywhile[j < trade-record-one-len]
! Y1 I7 b4 c% b+ z9 s  {[
$ h; {* @: _/ _! E, Q/ J) K% kwhile [((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  q' q" k$ _& \& \9 A! 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)
/ R+ m) O7 }; J8 G! `5 K! dset j
2 P0 N3 I7 k4 r8 J! g) B6 q! G( W( j + 1)
2 c3 x2 P4 g3 M! Z/ K6 |. B
]- w6 A7 v/ p! ?9 U* R$ u; T
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 ))
- t) v( V) N; h2 Q; J6 E
# D, J  u8 a7 ~) h

* g) S( G% E3 hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ M8 h* J( j6 h' I4 ?+ E# |% g
;;
及时更新il的评价质量的评价
: l4 @* F( H. q6 F/ qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 }3 _4 H" k8 a3 B$ V5 R0 z4 L: b
set l (l + 1)+ W" G! Z) s  z6 Q; J/ I
]; x" F. ?6 R- h% c* C
end4 }6 p7 a- H( t* m" R

; R" K# j! Z; yto update-credibility-list
3 L( A! P. x$ u. ?let i 0* g" x9 s8 B" ^9 u( `# q! o/ L
while[i < people]
" F" i0 R0 ?6 h. J" k[
1 `- D  a6 d' plet j 06 d; U7 l7 V! `% l8 p! I
let note 0, V( q: G: Z; \# Q" |4 i
let k 0
/ c# t; K4 I  V% ]& v;;
计作出过评价的邻居节点的数目
% P; d: a$ r9 J- s! lwhile[j < people]
: E$ b/ S4 j! g2 ][8 H6 ]6 t/ I; a" D8 |, x1 }" s8 a
if (item j( [credibility] of turtle (i + 1)) != -1)2 w6 P; @9 s. G  t) F
;;
判断是否给本turtle的评价质量做出过评价的节点; K( N2 O0 u' D' B
[set note (note + item j ([credibility]of turtle (i + 1)))
& j9 {7 d# N0 ?- h3 ]# c$ R;;*(exp (-(people - 2)))/(people - 2))]
& r$ t. h" H  H: T) L7 Y
set k (k + 1)
. j) f1 Y) L; N! t$ \) s. G]
; B* p5 C3 _% H' W) eset j (j + 1)
9 j+ R* U; k( J6 n0 O" ~- z1 M' o6 B" N& w]
2 q8 N! O+ P: P6 H. t: Wset note (note *(exp (- (1 / k)))/ k)* w$ V1 {+ R- t( W! b4 G( A, Y" _4 @3 C
set credibility-list (replace-item i credibility-list note)5 }1 Q1 n1 T3 z; O5 ~% W; }3 E
set i (i + 1)
# e; k/ K* B% L]
& J: E2 y% \1 ?- Bend# n/ _4 \7 ]' D+ ]% B5 l

$ M7 v, l- N5 p7 _1 L) cto update-global-reputation-list
; B. J& F! a. J- I) e' z# hlet j 0; Y; e7 n  w: {1 ?8 d, ]
while[j < people]# b& i/ z2 U( A6 E' A1 v6 Z. r8 \
[
1 g3 h% ~, Q2 L$ Q* dlet new 0" J) o/ H& q* I5 @( G( y' J4 Y
;;
暂存新的一个全局声誉  [1 n; S( z! Z$ c
let i 0
- D5 R0 m& Y& Y3 Q( F& E( M3 J/ jlet sum-money 0# T( P7 @1 V3 y7 f- f% L; D4 m
let credibility-money 0
. ]  w) i! {% q, A. _# J$ Owhile [i < people]
. m2 x+ @0 \/ H0 `[9 S4 c+ U) ~' V2 i& `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 D7 u8 @- K, U4 N: d6 u+ ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% d( S7 Q% E( nset i (i + 1)7 r. f0 D4 @  P  A) v
]
1 X# b! K) T( dlet k 0; d7 x: V, [& E$ N4 }$ h& ?, ]2 h& E
let new1 0
& A, H; Y- z2 |( a- B) N+ t0 ]while [k < people]2 f7 r4 x3 k5 K( a, G& Y
[- v7 y; t  y( ?' ?; J( d: g8 X
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)
4 i4 G( ~. ~1 O8 @0 {4 j% a: [9 ]set k (k + 1)
+ V5 B# d& z+ C/ C]
, f" q( B$ u: j( G. d1 S3 sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 a: t- Y" t8 P2 ?" p. E
set global-reputation-list (replace-item j global-reputation-list new); }" J8 F* l3 ~' p
set j (j + 1)" D% K! y; `- M. x
]/ G) `" P3 j! ^; t# M
end
; K& a0 r& G9 T6 C# u
* p# f5 W& u; q  Y" g8 |+ C9 K! W3 h: P8 D! x8 t  l5 _" r" v& B2 c3 a

9 w. \0 t6 Z7 _% \8 a5 h) q7 q1 \to get-color
7 K1 I, M2 r" o! x( @- L
6 H3 J0 `9 R& e2 c  x$ F+ X; sset color blue

2 z8 m7 b1 I/ Z, fend7 ]' v! I5 x2 A* e1 G* x
5 R: T# }9 {, m) H
to poll-class! `1 q: w1 F8 w. U5 T- r. k
end3 A( \* U$ L! K8 m  b

6 \4 T' w: _& {* k6 s' zto setup-plot1
, l" Z( A* v& e& h! W. c
. C. B1 H) F7 o# @set-current-plot "Trends-of-Local-reputation"

/ ^+ B3 V/ x. }$ C
' M: Q8 V$ _1 X; }' Q# A2 |set-plot-x-range 0 xmax
' l+ q) r3 m. B
8 V+ I! K( J5 o& j4 e) f2 i8 a& `
set-plot-y-range 0.0 ymax

$ x6 p6 A  u: h; A' x- Send6 C% r5 K- N- V1 g
+ q' z7 j, F  L  m6 X0 L: R
to setup-plot2
4 L- J, w% l7 @- |7 u% C6 j; p; _
$ {! W* U# F# t* X/ K; I' Nset-current-plot "Trends-of-global-reputation"

0 S# _: r4 f. \6 |' u- y# t* k3 |" _" k3 a0 l
set-plot-x-range 0 xmax
$ }) q( S) J! b+ V
9 b: Q! h6 u- L! R0 e
set-plot-y-range 0.0 ymax
0 d9 D# {2 N( c
end
, \$ r( S5 d3 `) Z8 B' T( T3 m. O; R7 x2 p: |" P8 H. P
to setup-plot31 l: T5 w2 y4 c( R3 V. ]  z* h
5 s# l2 {7 U2 u+ z2 j2 P& N+ g
set-current-plot "Trends-of-credibility"

. z! a5 b- |1 Y: q0 z
2 F0 c7 H; u& k/ Aset-plot-x-range 0 xmax
) X' t0 K. \, w2 {

4 j- k  i! J! W* t6 e2 b  Eset-plot-y-range 0.0 ymax
5 T+ b' ~) |4 K* B* O3 Z2 s
end
& A) l, U: t* e" s0 W' u1 R; \2 e. O- s; O
to do-plots' u% v9 T, e- O8 I
set-current-plot "Trends-of-Local-reputation"
& d; Y% `$ O) D  E' O0 Sset-current-plot-pen "Honest service"
: L' W4 J6 H9 p) w( {end
( ]) c; I  R/ k% `% i
9 H8 J" L) V" 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.
8 ?; k. m4 @4 z% @
- j/ j# P4 ~) E2 C2 k5 s) D! 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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