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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 V4 O  m$ w$ u8 j. Kto do-business 5 [  L/ P  m5 m) j0 t
rt random 360
- R3 m/ x3 V  {' b fd 18 T2 A# E$ R9 P  l9 F+ N
ifelse(other turtles-here != nobody)[. ~$ B( I5 v8 N8 W0 ~& F
   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.0 Z2 x+ @) k1 r$ G3 Q4 j9 i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % n/ N6 U/ g5 L3 f; W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  a% n5 G) i) N- z- u0 g) K
   set [trade-record-one-len] of self length [trade-record-one] of self8 B1 Y9 j$ N, l6 r+ T+ b1 Z
   set trade-record-current( list (timer) (random money-upper-limit))
" B8 z/ i) ~% O  K" q2 ?) h* d5 U3 y* |
问题的提示如下:7 T4 \4 ^, L5 [) x! s# V0 m; q
9 `0 s3 O2 E! ?: r( E3 G" M7 N
error while turtle 50 running OF in procedure DO-BUSINESS) Y2 R0 ~5 c  p% Q4 a& E/ q
  called by procedure GO
4 W4 T2 A, Z# [0 Q2 h  F3 rOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 y2 u5 A) I9 A0 }. }
(halted running of go)# r) k7 D3 N! n

8 B0 B8 }, g" l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~~% O0 v0 J! k! m* z' H2 o
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教- e" w# s  S) Y. E# A, i* H, |
globals[! ?7 k: r7 E! V3 O, t& O6 B
xmax- g; w* ?7 a8 L$ ~. k: v; q
ymax
- L1 D/ R  q* S" h$ I& [. \global-reputation-list  {7 R/ Z0 j% i+ }
3 [! B3 K0 ^# V3 O5 Z- }9 H
;;
每一个turtle的全局声誉都存在此LIST
1 Y+ n7 r# Q7 `2 C7 d! y2 b1 ~% `; Ecredibility-list9 o8 Q: D: W4 A4 `8 g
;;
每一个turtle的评价可信度' i: w6 l  w* z  e4 t
honest-service9 V( F) d0 m3 L) \
unhonest-service
! M/ k0 G+ N2 `0 o' r5 t- loscillation
0 M4 P8 T1 \5 {0 }% T* Vrand-dynamic
* L5 G) E+ q* Q9 T* U]6 \4 P# O3 q4 s: }/ z0 `
) K5 m2 O5 }: g  l
turtles-own[' S4 S5 k9 U+ ]3 Y3 Q. \
trade-record-all1 l+ d0 E& M7 E) k( Z( m
;;a list of lists,
trade-record-one组成% _( T0 {! q7 B6 N7 e
trade-record-one
: }$ `) T$ y! D8 k" }& Z8 U0 V5 w;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- R: X% _4 Z3 G) o" v* Y
" i3 A* B! j4 Z1 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]]
  [8 \# s- y1 q9 S/ e4 o& 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]# h: B; c- M+ O2 d
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list$ f6 ^* y8 b0 y- e& b
neighbor-total
! P+ y, y$ q. l+ R- h;;
记录该turtle的邻居节点的数目
/ k6 E/ O1 k' j3 X" Z2 {4 Xtrade-time# o" @! S" _6 F
;;
当前发生交易的turtle的交易时间# \: E; y2 C9 V  v  [# Y
appraise-give
6 d! B) E) ~' T3 s, Z;;
当前发生交易时给出的评价  m* M4 {* U. Z  T8 b4 ^
appraise-receive8 c' A5 C, I) g1 `  j
;;
当前发生交易时收到的评价  N, \  s/ Y$ S) C
appraise-time$ [1 N. C1 O7 f6 O: u$ r4 }
;;
当前发生交易时的评价时间: r: P, e5 g" Q6 t+ O  l( C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 ~) ~0 S( e/ P" S9 etrade-times-total
* a7 [' ^6 U& x# i, s' L;;
与当前turtle的交易总次数/ ?$ F9 T& i9 ^1 l7 e. J3 u
trade-money-total
) Q, b* B, a) B( ~# F;;
与当前turtle的交易总金额
7 q+ q. z' x& x& S8 N$ Clocal-reputation
3 z- Q6 M3 S; C5 Yglobal-reputation8 A, r. E" n9 f- G
credibility
, G( B" d8 c  Z) G3 g;;
评价可信度,每次交易后都需要更新% q. h; n  M3 _  N; P
credibility-all% w6 V$ Q! s+ p; z
;;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/ M- S6 o3 f5 R9 O
2 A) |0 {3 {3 X8 T( i1 R; n/ h
;;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
# }& [' R& D& f6 ]# \7 d6 D: ?- qcredibility-one
/ O; J. S8 C) f7 R;;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
( z! C- ^7 M+ f1 \. P, oglobal-proportion
7 W5 C; O. }/ pcustomer- D- ]2 F6 v9 f6 k3 I# R6 B1 x
customer-no0 L: c& b* c$ u. W4 Q
trust-ok# w# ^3 N# J4 i* h- s, X2 X
trade-record-one-len;;trade-record-one的长度
, T5 b% l; g4 }" N9 T6 r7 B]$ a, P4 j* W' G

3 n: ~* P7 @/ h;;setup procedure8 _' F' l9 y; h/ j: p8 u
8 |% Q# ^7 y- c6 F# [4 E
to setup
" R% r' W. f$ d& J( r) T9 F+ ~' g4 j3 G- |7 I9 x
ca
) r( A$ b& q9 l1 ?  `/ W- u
0 y* b3 l/ J, F8 K% I' I
initialize-settings
2 c- k1 f& o1 ?- W1 }7 s% a0 w2 m
/ j$ R1 M9 u, p7 K2 F- g, b3 [
crt people [setup-turtles]
  u! k0 @- U4 p
, X( p" D+ d1 w. K
reset-timer

+ ]8 E4 e' O$ a4 m6 b, o; l& [. U# E6 \& z
poll-class
6 v9 o# Z4 {4 B
3 A" f% S: W  \
setup-plots

: a9 k$ u0 q9 w& D
0 |3 c/ e3 Q8 d$ A( |9 ddo-plots

- H7 Z- M. l+ S) l5 xend, }3 j: V6 l+ w9 K! y% U/ N; E

2 C, X( `- x/ P, c  C) W) hto initialize-settings
( ]7 t. O3 a& q6 Q
. i9 s" Z5 f# }: W7 h5 aset global-reputation-list []
8 E' N( ^0 _, {! j4 l

5 E* L/ \7 c5 ]! Bset credibility-list n-values people [0.5]

; ]% w8 H6 t# I$ o) i* o2 e/ O" \( k$ U2 k
set honest-service 0

9 q2 a( ^$ J: Q8 g3 n
2 v4 o) ?1 `( eset unhonest-service 0
1 e% o+ s: {; t3 G+ j3 d
6 Q7 \' Q% r  }) s* v+ s
set oscillation 0
. J5 Q+ @5 F# D( e

0 x  @+ [  r) ]* ]  R' Qset rand-dynamic 0
9 ^) P7 u- Z6 B( d% F9 n
end
6 A4 @8 ~5 z! L$ m, y3 g9 r) V5 r) ?6 s$ o, A" U8 Q0 q: D, R: Z. H
to setup-turtles # J, m5 p& ~/ @8 A
set shape "person"
7 x3 n3 V( F7 \/ \/ g0 c. [setxy random-xcor random-ycor
" l3 J% |; N  w' B" N+ Oset trade-record-one []
$ K- G  y0 G( V& P+ n, ]
/ L1 q* }% W5 I
set trade-record-all n-values people [(list (? + 1) 0 0)] & h$ J1 ?0 y4 }1 r

* z/ |# ?% ^, Hset trade-record-current []. x8 Q: l+ J$ B3 @0 q0 j
set credibility-receive []4 |" z4 z: z1 A, ]) i2 ]
set local-reputation 0.51 w" ~" y, e& r5 A3 t
set neighbor-total 03 j7 L* ^6 S, e7 I; k& D
set trade-times-total 0
5 n& U! I/ o6 [5 |set trade-money-total 0
. W. L- R" O$ h, I) u2 k9 e3 {# o+ Cset customer nobody
5 {9 u% k  ]4 F! ~0 eset credibility-all n-values people [creat-credibility]  S+ A6 e2 S4 g2 P
set credibility n-values people [-1]
9 d. `+ x/ x2 T6 p5 {/ D+ nget-color
2 x4 P9 r) t4 F6 Y
, S3 V/ A3 e1 |. P5 m. }( z$ a
end# p6 k# s4 l( [9 g9 s
& o+ M  {5 s3 [
to-report creat-credibility
1 i# k: I$ i- u; i7 Q3 Greport n-values people [0.5]( }6 m, [+ |  q: _" p+ i
end- g- V, P$ w* [; |2 X: |

. Y/ P8 Q1 P% W% uto setup-plots
( m( M/ x. Z* s& g' o; ~% A+ a
" o2 b9 Z" M6 @set xmax 30
2 u) D- F& f9 c1 I" j% v# ?

1 g6 W2 G' A$ E6 z# s; cset ymax 1.0

) I  {6 Y  ]% v7 _; l  P! B% I4 t3 r+ U$ l0 D
clear-all-plots

6 q+ w0 j4 x0 S2 S' z. Z- K2 y6 H& `* v9 t$ _: l0 X) h* }0 Z3 S
setup-plot1

* Y$ p9 ~. Y  b' [
7 }# F% J% P1 S$ O+ Bsetup-plot2
6 l  j3 Q7 ^3 O3 c: j

: Y# k9 E* I3 m5 Q3 {& gsetup-plot3

3 Y- p( H9 ?9 U$ F, fend
; h+ i) S1 a( z( m$ @) B
8 K( Q) T" S  N( C;;run time procedures% t# n8 h$ M/ w# N' v$ Y

+ J9 A5 l+ Y. Zto go  l: v: ^4 M1 T# ]5 m! f& ]

' V! ?9 S" ]/ \9 h8 |7 n9 {# W0 lask turtles [do-business]

  j- r) }- {9 T, Vend2 N" j# m9 B6 l- c  s! @* T  k
9 x7 _9 ?/ e0 K
to do-business
1 @" Q; S! i+ i3 z6 ?. k* A+ r

$ a0 ?8 y% e2 n' T2 p- {, `: ?7 Y8 s; }' Z' b0 D/ A# w: y" I
rt random 360
( q4 J- a& S& K$ S5 h. ?7 R  W' J( O

; k8 d1 L' B5 b" H4 pfd 1
! f, R; A3 u6 U' \6 Z' v
9 P# j% r* h) O
ifelse(other turtles-here != nobody)[
5 l  f& o8 h, i4 m& u' |* K6 f/ X
0 L7 W/ U% a8 Z* U
set customer one-of other turtles-here

, G1 F7 Y. V# |& s% \( p7 ]/ C6 H6 F! j& S
;; set [customer] of customer myself
6 }: O5 N$ ^: {  r0 \

9 F' E& W8 z. @, o( eset [trade-record-one] of self item (([who] of customer) - 1)6 p$ m( M* s) x8 Y# p: l
[trade-record-all]of self  M6 t1 z% q+ o1 ?) B8 F5 b
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, a0 f' y, I3 i2 r1 X
9 e4 [* R) i8 F
set [trade-record-one] of customer item (([who] of self) - 1)3 W6 E) w1 j% `3 X! `' E
[trade-record-all]of customer

; Y0 M8 b# N. o7 q/ O
6 k! I9 ~* [  @3 D0 G' ]2 Fset [trade-record-one-len] of self length [trade-record-one] of self
& r  J; Q  Q: i

* r2 d# I5 z# W) a% Fset trade-record-current( list (timer) (random money-upper-limit))

) y& z# L7 s1 l4 y: b5 Y5 F1 H* B; P& }: u% @4 Z
ask self [do-trust]
7 g0 m$ @6 @  E;;
先求ij的信任度2 @8 j6 a" A; Q/ r& J6 ~
; w0 i& w& C( W* N
if ([trust-ok] of self)
4 |/ Z! [8 j! h( v7 D;;
根据ij的信任度来决定是否与j进行交易[3 _$ c! w5 D) K( ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. L. F7 f6 ]2 C: ]* l/ {
! _" z2 }5 E6 E
[
/ x: b! W7 v9 G+ ?/ x2 x7 v2 f
0 _9 k$ ?/ B( R# }, N+ n) j, z3 `
do-trade
. V1 b! v+ a3 L& V9 s& z4 m: J

  `! o$ ]! J& f2 @update-credibility-ijl

' F4 Z! `1 W; w; [; r; z, I3 V1 k+ _( d$ F" X! f& v: K
update-credibility-list+ M9 h  ]2 i: E: A; l
8 p5 p3 N  W+ Z
; \1 G. R5 S' _# E* I% O1 ]
update-global-reputation-list
4 N" k( S) L3 J* e8 W/ A

/ z5 F  j) _+ {0 A4 m" Tpoll-class
* ^4 V5 ~+ L2 T4 ^
# Y. t) w8 i; g+ C; T2 J$ B5 L
get-color
3 I" u8 O( G+ K0 Y6 Q7 d& S

) i( f; \7 |1 x4 a( Q  j]]! O/ z% \2 Q$ i" E2 I' O* Q
/ ~1 S9 G) Q. j% @- e! ]( ]" R
;;
如果所得的信任度满足条件,则进行交易4 f  I4 l2 e) Q) @+ z" ?5 E

+ A, {, [  L$ r6 f1 n: E[

1 Y$ s; c! M# M( n7 W2 n! j
% f$ a9 B3 s+ O( l7 i! {rt random 360
1 I# C6 x4 t/ d3 D0 I
9 j! [8 a  x; g# m! R
fd 1

* m% f5 {# X* D2 Q  u+ }- n: g' N7 E* C8 A- P$ L3 ^& y5 i3 h
]
6 J- e2 n; N$ L( {; q
/ m6 v, _+ q; ]: x
end
- T' [. P3 X2 M2 B: @6 }) d+ s
& B/ b( s" P) r1 F
to do-trust   B/ G6 T. ^  [2 _6 V5 \  Z
set trust-ok False+ b; a; g( ^  |9 }/ {

4 Y; v* _( L" c4 Y
+ u5 w8 b0 g1 N4 w% J4 I4 t0 T
let max-trade-times 0
+ f; R8 f! @6 S) r1 h3 Hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ o$ N/ n. M( n, V% f7 Z" ~
let max-trade-money 0$ ~  N; x/ o) J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! L4 P9 d. r0 L( v, i8 H1 j
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). o7 d0 x, y6 }/ B" E

8 u* {2 W$ r) o5 c  Q

0 }" Z: s" f1 K& G/ gget-global-proportion
9 U) n% i$ F: Ylet trust-value) N* r. Y( A+ m5 u6 A
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)

, T! \( c" ]( k* G# n& aif(trust-value > trade-trust-value)' j4 Z3 j, w  i8 [$ @' B" s- V
[set trust-ok true]4 Z$ W6 V* W8 N: X# w
end8 ^& h, G" Y5 _7 y

9 Z/ G( p" m8 X9 Xto get-global-proportion# I& d) b, R  z. \4 s  h& r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* y5 L/ L! Z+ @: N8 ?; z2 Q4 v[set global-proportion 0]% g! B5 B  n) R2 E' @/ m  x
[let i 0
) i& D! ~- [  klet sum-money 0, \/ n* U( d8 o6 I9 G$ C) M7 x& K
while[ i < people]3 l& d& Y4 W2 }. O: u
[
5 s$ X7 J+ A$ ^% Q3 b! i% E9 Nif( length (item i
' I+ {; e- G9 H[trade-record-all] of customer) > 3 )

1 @* T& h* g) V8 m  g! R[
2 D2 M4 T1 o2 P# _1 eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  R6 o9 _( C9 R* N+ w) E
]+ h3 y# a/ `1 N( H# n- ~
]
. L. |) w3 E  `% @5 Plet j 0, o9 s6 j5 b# X
let note 0
; w" L8 \: N! G& R" a% N5 F7 {while[ j < people]$ W4 g! D3 I- q$ _
[
; B% G. D+ x  Nif( length (item i4 i2 }& G  ^  Z4 _( X. Z9 ]9 H
[trade-record-all] of customer) > 3 )

* B/ h) X" q7 M; b' W: a[# J& n( d( S2 y5 ^: p
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ v9 C/ j8 `- L7 k7 _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 R* C3 F' h6 h/ A$ y! [+ k* t[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. `! j& f$ I0 {/ N8 i7 k]- L; b) A: {8 C
]9 Z3 A. b; e  U( d8 D* S) L
set global-proportion note
  U  W1 A# P/ I& n]! B( X& X, o( v7 W
end- r/ M: @1 q8 F. {0 d

6 @* ^' B5 s0 t2 f% x  y, c+ Ito do-trade
7 U9 ]- o  c( b( r1 d8 r4 ^8 P;;
这个过程实际上是给双方作出评价的过程7 Y2 Z0 r8 P& ^, e# B  M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( _2 j; N/ Z7 R  o2 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* m/ |1 t: h' q8 U7 yset trade-record-current lput(timer) trade-record-current# {0 H4 A, T1 T" R
;;
评价时间, E/ b" |+ H/ x7 L. @: e; S1 n
ask myself [# b4 E) Q/ t0 C/ ~; n1 a" q, U
update-local-reputation
. [$ G# G0 \/ yset trade-record-current lput([local-reputation] of myself) trade-record-current
" J( f" V+ D$ p]
6 k) A" `7 J( g/ zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ `% P5 p! u6 p- \" f! {* v;;
将此次交易的记录加入到trade-record-one  m' T7 V: i' c  e9 z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) Z6 f" H# D7 R2 Q' Xlet note (item 2 trade-record-current )9 W  l% ?9 j: M; U! Z% y9 ], i
set trade-record-current
# g' J' [* X6 Y. h7 a  ](replace-item 2 trade-record-current (item 3 trade-record-current))

4 V. v2 u4 T8 bset trade-record-current! a6 ?2 c1 I& O, i
(replace-item 3 trade-record-current note)
( d3 x+ q9 E% i+ U5 J$ b9 E! n& m4 o! `: z+ O# q3 L+ [
8 l. d7 l& U# z% [
ask customer [
2 q8 G! n0 g* Tupdate-local-reputation
5 l8 S  u4 v) L8 G( Wset trade-record-current9 ?$ v* p9 r$ E' E1 F+ \1 e
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% C& l% B( @3 s* w
]
; K  Y: {& i2 W% X* m0 A7 y  G8 r% O/ \3 ?4 ]6 H

8 ^9 {! }% V3 u( ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% F4 U+ A  F& t. _! Q

: V, y) n( E* E' w0 _+ Oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* J' j/ {) h3 n. Y+ S  U. d6 z; n
;;
将此次交易的记录加入到customertrade-record-all
4 Q) T0 X" s, I9 R: y4 Tend
1 ]0 x3 ]$ S. q" s
7 L) ]6 f& F4 h5 Y+ z+ E+ Wto update-local-reputation0 M' u: v  i' }9 u6 a
set [trade-record-one-len] of myself length [trade-record-one] of myself
* c! J8 V$ |8 C" ?: g
" U" f) f# i" L& V4 L! r, ]
+ `: G% Z8 r8 q+ n; L;;if [trade-record-one-len] of myself > 3
) v* t4 _, J. k& F  c( t6 O- [
update-neighbor-total# s# N6 A' C7 }! L" S5 [# ]- L
;;
更新邻居节点的数目,在此进行* y; t1 a- z6 [! [% U
let i 3
  V. h& W* Q5 olet sum-time 0
% V; n  h9 W6 v! o/ ]% iwhile[i < [trade-record-one-len] of myself]
1 l; ]5 ?, b* x6 e1 g5 w[
% f9 ?) U+ b$ o9 U2 n4 Qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ j. F0 c9 B9 ]; J- K/ X* D0 X/ Wset i
8 m# L5 u* y9 C' w/ V' j7 k% e4 e( i + 1)

% c+ i  e; Y: n( N, R  S; c9 g% B]
! X7 N1 z: o; V) ilet j 3$ J, z, l$ s  U' t! j. l& m
let sum-money 0
: C% w4 N' V. o( Qwhile[j < [trade-record-one-len] of myself]
8 y% N0 h/ i9 p* {) c[0 f* w  r0 {. y, a/ L8 n/ l2 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)
+ D% W; H9 a) j3 o. u9 _set j
$ Y+ H) Y7 P2 g2 `( j + 1)

; X# j. m; O4 a8 o( [( m( p]
$ e, x5 G! }4 ^+ Ilet k 3! F. U4 s  \) q! k$ M$ k# L
let power 0
: h* ~+ s7 _; q/ Tlet local 09 }0 _6 f. ~( x
while [k <[trade-record-one-len] of myself]3 e3 d2 P/ O' v* F2 U' x, n
[0 z" W% r, o4 Z- p7 ~# E
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)
& l# V/ A# [/ r! Q; L& p, g8 vset k (k + 1)! V0 B% K6 k! L' i
]% }" y$ E$ [: y. @$ a
set [local-reputation] of myself (local)
( [* C6 c% |; N# Pend* @1 e5 F; B" ^  X9 ^5 i$ @0 A

& S5 K* O  `4 _! O+ tto update-neighbor-total# |7 P0 |' x2 G! D) m

8 [, {( ^5 A8 h% x2 l( B) Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 T$ _. e# m3 n2 j! m( A
/ |: N. m/ t% K

/ \9 v& p  }8 Q8 V( ~9 Iend
- i) [8 c9 l8 Y) n8 E2 w( b% r
. U, o7 B7 F; a, ^$ @. vto update-credibility-ijl % \* M$ I6 a& T8 }" m; f  [
! ]+ }8 B: k% \2 A: i3 |0 G
;;
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。
" k7 ?/ [7 A$ s% E7 N! A/ C# Elet l 0
  J( c' |  _% ^/ cwhile[ l < people ]# p# z7 |3 M0 g- C! p$ x" Q0 J
;;
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
" [" T7 t1 G/ ?" f" c2 ^5 a$ v[. L7 }$ g0 [* t' i6 k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) h# U" ~0 P) H! k8 qif (trade-record-one-j-l-len > 3)
" Z7 K$ z( z: h: l# g+ u3 T[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
/ i( Y/ F1 Q6 Qlet i 3& i9 N# N" @) q4 g. z
let sum-time 0# ~9 [1 v, i4 `1 Z; |1 Z
while[i < trade-record-one-len]/ S3 d4 ]1 E5 x- E4 R- L
[+ Q9 B% V8 g* }6 L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 M+ Q2 A' H1 z
set i
* I* {/ m8 x; _* o% M% K( i + 1)

) c2 ^1 R+ A: u* J3 G3 r]/ L: [) x+ m' r9 w2 L, N
let credibility-i-j-l 0+ L- j1 x- F6 |* {0 k. Q
;;i
评价(jjl的评价)8 n" m" T1 q( ?. m) H/ G
let j 35 L- J( i3 T. n- R; n
let k 4
! y' T& w- v8 O4 Awhile[j < trade-record-one-len]& V2 Q5 H. @( f$ X* ?
[8 a4 i4 [+ q& L( I2 j9 {" i, k
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
9 ~8 C! Z: M. O, _' Gset 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)  p& n* C( L* S3 B9 I2 Z% F
set j
7 e, T( H( f- i5 o) F( j + 1)

; w2 J2 h6 d9 n7 v% Y]' `/ \' y( w( N* m7 V
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 ))3 N3 p( W+ \' C5 V# A0 f
; [% }  v; d+ w* t, R1 D0 N

1 e7 h1 j) Q  q% a1 w4 P! ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): c' `! R" x) \- S! N
;;
及时更新il的评价质量的评价
* ]9 Z. o' n+ p" y& t( Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 {/ ]5 B9 r: G$ ^0 j/ ]
set l (l + 1)- g2 N$ Y' e: p4 C/ I8 g
]
& _# _2 R0 e3 O- Z4 u: `end& P- W" _% w7 x* @4 X3 D1 x6 l# f+ e

/ o& G4 K% ~7 Lto update-credibility-list0 k* o6 D5 W# \
let i 0' M  j1 q. a) h' g4 C; q$ V
while[i < people]* ^+ @: T$ u* x+ I9 `
[# ~* u, b) l; O1 L# p
let j 04 Q) j7 ]3 r$ Z6 T* d
let note 02 |% R1 Y+ l; x) T# [! J
let k 0
: K$ ]/ j, G# o;;
计作出过评价的邻居节点的数目# D+ n6 _& y$ ^) `1 j
while[j < people]2 X8 @8 ?! [* X4 r9 \( K& @! E5 t
[! _6 ^  M# l9 r" N0 ~
if (item j( [credibility] of turtle (i + 1)) != -1)
8 R7 g8 B) _7 Q/ E9 h;;
判断是否给本turtle的评价质量做出过评价的节点1 t0 P# E0 \+ W5 u
[set note (note + item j ([credibility]of turtle (i + 1)))( l) `/ R) L+ C+ ^, b' J
;;*(exp (-(people - 2)))/(people - 2))]
& `+ b3 p4 m/ L9 ]' y
set k (k + 1)3 a- }; `; [4 V( b. h  E
]
& U2 i; ^/ t' f% xset j (j + 1)" w9 Q' V% V9 f% T7 J, }
]& a( H4 ~5 u5 A1 |* a
set note (note *(exp (- (1 / k)))/ k)0 n: U' W# F; E4 p0 J" d
set credibility-list (replace-item i credibility-list note)) C( p7 Y$ B4 }1 u" q
set i (i + 1)6 C% c% t$ D  i* a! C0 L, z9 O
]# T6 u0 P+ `5 v8 B" G
end% h7 ~2 v, ~& |- H
' |4 ]+ c/ h* F# _6 b
to update-global-reputation-list
- `/ \+ _0 C$ A' a( \* ulet j 0
$ {) l! h8 \5 ?1 n: i/ h" ewhile[j < people]
% f0 G  f) _2 B[
& P6 t3 k# g* M. S4 ?let new 01 P: S. ]9 x: n) `4 B
;;
暂存新的一个全局声誉# {4 X# _3 z- Y% s9 z6 }  L9 b" d
let i 0
" L: [7 H" P6 l  f: vlet sum-money 0# `' ~$ S7 w! x  E0 {8 ^9 ^/ @
let credibility-money 06 }% ~; \. W( l8 g1 G
while [i < people]5 R' r! u0 W6 ~9 E  k+ V. G9 t  @
[
# z) j5 G$ A/ Q) bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), k  j/ M" A) j0 f8 h" _
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! y3 q- O) h0 E6 U# l' Z0 P& O% d- U
set i (i + 1)
, W3 N; n# q* N]
5 \3 K& S6 o5 Ulet k 0# o9 ^9 Q% _: ?
let new1 0
& P7 i, R) W# V* A4 Pwhile [k < people]  {: \. b. K7 l# a, ?, ?
[
1 K9 {* u8 O! j: @! 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)& M% x" B& j* C* l% a+ l
set k (k + 1)
# o" N# E7 x1 t% V5 K2 x4 W]4 \  P; m# C" j
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - ^6 T+ p4 u  ]1 j0 U
set global-reputation-list (replace-item j global-reputation-list new)' h7 R) A$ F  l9 j4 f$ @
set j (j + 1)" B# C: Y, z/ a. l7 U
]; K7 T/ t) M2 L: ^% G
end! L1 t1 O0 l. }( f1 O
3 |. ]; q. X! c8 V" A

+ Q7 j! i9 X: t5 f( C; ]
" W: G/ C3 K1 u- qto get-color8 l) k& _9 |/ P, `+ f
- o, h6 r+ G( E' T7 I
set color blue
. k, s1 O+ {9 n: z
end' [. o' `9 T2 p

1 ?" C7 K* w. b! T7 \to poll-class
, q; p5 i! j' N+ m3 a/ Q' a' oend
. q9 u& S  F  Z; c1 c9 h, W) P4 P/ B" u6 j5 G
to setup-plot1
, J* B: U- Q, e$ g* l$ u
/ B& J( ?4 I/ b- e- C8 Q1 Zset-current-plot "Trends-of-Local-reputation"

' w8 J) H+ b: I9 i( I
7 v- E% `+ q) m; H4 x  n: H- Nset-plot-x-range 0 xmax
0 a( J1 u$ o& Y8 ^, ?" `
/ `+ ~" Y1 W3 |, h$ b# W
set-plot-y-range 0.0 ymax

7 k7 A! J1 l% V) I. D( c; vend
3 u8 u1 x  m: U; w0 l) X5 x1 y6 n3 Q7 y- Z/ s4 e
to setup-plot2
- ~/ Q; }& e8 ~1 Y( r4 a/ h5 L2 G" h( g) W% u' \. u; n9 F1 t
set-current-plot "Trends-of-global-reputation"
4 J  d) }' l7 P
! E6 R  W/ i: K5 ~
set-plot-x-range 0 xmax
) L/ X1 T# W! f& K" ]
: |- s9 B# y/ M
set-plot-y-range 0.0 ymax
8 e$ t! j! }9 b/ Q) z: C
end
2 k! C2 j+ z0 S8 O" t. e; m! z. l! R2 Q
to setup-plot3
# M  h/ }1 Q! o( j
. u4 [: x) ?, y( X( Oset-current-plot "Trends-of-credibility"

) t* i3 O! J. E3 Z, X+ d7 y0 W% N4 C. u2 P
set-plot-x-range 0 xmax

. j$ i2 c( j7 y8 Z: @* O
3 b/ B% ~/ P' M$ u3 l$ |  k+ Dset-plot-y-range 0.0 ymax
/ L( \+ A& W( v* x6 C
end
* S, F! Y$ H  f8 H6 m
" m& W$ E5 {; n4 J5 t) R; {to do-plots! C2 p" A7 B8 h" t# Z. Y
set-current-plot "Trends-of-Local-reputation"
# y/ b; E$ y( O8 x  V8 B4 A/ jset-current-plot-pen "Honest service"
7 K  \2 }, G2 Dend
+ P: Z* b, L) e* P. k
/ {2 P6 j* ^# o* w0 m- Z' C[ 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.% p) H# E  w4 r  `  B3 h- i
: H  m5 Z3 Q. ^
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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