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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:; D9 g8 l/ h* _; H# n
to do-business
; h$ Q+ W# G- E4 \* F- L7 J rt random 360
: r$ r0 E8 z, G$ z fd 1
7 x  ^  M, H6 t ifelse(other turtles-here != nobody)[  `& _( Q- E- E# s
   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.: f6 S4 R( ]" D) \
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 i1 g1 }$ h& X; U! g
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# c; `' `8 k: O" P: s   set [trade-record-one-len] of self length [trade-record-one] of self
" r5 @) ~& g" h9 Y   set trade-record-current( list (timer) (random money-upper-limit)); m  U/ x7 f; {3 p3 Y0 x

4 C( W: n! q( R/ {9 u问题的提示如下:
7 T. N4 g  m' @; A! B0 f8 b2 G9 f5 y" v! ?7 S8 `
error while turtle 50 running OF in procedure DO-BUSINESS
% t/ S& K( S; K  called by procedure GO
1 n: ?+ r- \/ [. JOF expected input to be a turtle agentset or turtle but got NOBODY instead.6 U  h: b" W- q% c$ [1 L8 L
(halted running of go)0 r7 C' F, X$ }' T. _* p
: [" \5 Z& Q: D0 s3 c
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~~
( B: Z; e9 H: f$ z# c; t- I  M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
& W3 \4 |5 [0 D! S; _( tglobals[
7 s6 ?, I7 g4 v2 X6 Txmax- {* G8 Y9 r$ y; E" y
ymax
1 V5 r! i& d- p4 qglobal-reputation-list
/ g1 S4 l# L+ ]3 l9 g+ b8 G1 e; b+ l5 p* G) z. |% H& B
;;
每一个turtle的全局声誉都存在此LIST1 D5 o: h& p: B1 \4 _
credibility-list
. B# B5 I0 {( F# g) v;;
每一个turtle的评价可信度
; a, c/ K8 U* ^  E& vhonest-service
# M: n+ [$ o3 U0 I8 @- Y# Runhonest-service' d, g0 q- T# {8 @8 }" l) x
oscillation7 c" g6 J4 m% y( e% i
rand-dynamic4 x3 }7 K+ K. t+ t" D: x7 G
]" M- X2 J  ?) X1 Y1 u6 l
; z# K; U* [3 x) Z8 c; J. A; L) g
turtles-own[
  d8 G- x/ X) `4 v! Q1 H; N2 |trade-record-all  x) L: N8 A  K: X9 I/ j* ~
;;a list of lists,
trade-record-one组成
8 K( ^2 \; S. D) X# `trade-record-one/ L* T3 R: ?: B3 M3 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6 B! ^0 y9 q$ H) u
8 G. z+ y. u7 N
;;[
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]]
  T, e4 _3 j/ Y4 i2 v, ]4 ytrade-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]
0 `# H: J' S4 r, I* n6 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
6 b1 ~4 Y: G: y: i, J- p: Oneighbor-total9 G1 e  y, k/ v; x" {# C  `
;;
记录该turtle的邻居节点的数目
' t% S" Y( B1 N$ }4 etrade-time; R; x: _, `: U
;;
当前发生交易的turtle的交易时间
7 I; d# l% \5 p7 j, W* [appraise-give. H2 c- n& n8 T( S; M
;;
当前发生交易时给出的评价
+ u7 j* w" f. Happraise-receive/ _5 h( _* G. Q5 L# _
;;
当前发生交易时收到的评价
* {6 Y- C% [9 G+ k: D8 w6 Sappraise-time! Q  d" A3 O/ v# L. x8 [$ A
;;
当前发生交易时的评价时间* \7 C2 F( Y. N! v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) q- O! _' h% ftrade-times-total: a; |" \+ {2 u1 x. t
;;
与当前turtle的交易总次数
( K: P0 n* P! [6 N" _trade-money-total
6 Z/ B4 }: {0 S2 @% h;;
与当前turtle的交易总金额# Y% _/ p. y$ \" `
local-reputation
8 ^; P- @+ g. c7 W* q% Cglobal-reputation# ]0 a: B6 V* P8 ]7 T) v, J
credibility8 X' ~1 e3 n( W. J& r
;;
评价可信度,每次交易后都需要更新3 v7 G6 n9 v2 P; `1 g
credibility-all
1 C0 d+ K/ c3 _;;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$ Z. q1 |  m% X

7 _7 r( x8 `4 }0 Z7 A$ q: v& E;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
! a1 y4 W9 r% S" ]* U  D2 t' g' ~+ P5 Icredibility-one5 I& k$ z, ?4 d: Z$ l; o4 z% Z
;;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
: k+ W4 \( ]: H0 h2 ~: o' z  J. m& I$ eglobal-proportion1 G3 G! p$ l! y+ F
customer2 S/ G% X* U/ u  D
customer-no
1 f/ W5 U( g! j; Qtrust-ok
) A- F+ a9 z2 h  v4 Htrade-record-one-len;;trade-record-one的长度
$ L. l, u$ }& }9 z7 S]
2 g" V0 q/ O, ?! I6 m) ~5 j$ f
;;setup procedure1 x2 L! V  a+ r7 @/ l% `; A; v
0 s' {  m1 r) v% H- m9 q5 `6 W/ S
to setup! k3 ]3 }- L; U/ n; s: C
( w0 V- {- U- j% e
ca
; W8 @! n& c5 Y9 Q/ w' M- u. r, u2 v
& e# F, w- Q- S  ~2 a: G& q& Z; Q
initialize-settings

6 P4 u# p! q; t/ m
! N. t9 o/ X8 A1 T2 \. {0 Acrt people [setup-turtles]
& d4 _+ c- W1 R/ y! b6 u6 D

; p2 j) D( J2 {2 i/ Q6 y3 \reset-timer

" `  E& Q% ^& k8 t/ Y: a) a, n( O9 d; |& ?
poll-class

% m$ a0 B# O: @7 L. {+ `2 K$ C5 }* f) E. i; {; \1 i
setup-plots

  o. O0 E6 M! ]1 z2 G, G* t6 L5 i7 {& s# v) a* _
do-plots
) z) C" @. r3 H# F
end+ \' L/ l1 w' m! z6 e9 L& ^

9 a+ \" ^9 _% Z4 n9 A- Dto initialize-settings
/ U6 j& |( u4 f: X; n! \; y+ M0 g1 U; ?
set global-reputation-list []
) G9 R! r' ^8 i$ g

& E8 M5 z1 U; a, eset credibility-list n-values people [0.5]

2 E$ h! k& G$ {# m$ ]7 {2 t
1 g# _2 m5 J; L& ?/ g' Rset honest-service 0

9 I1 y  \0 N# |, ?5 s0 m% |
3 V8 V/ Z- z9 M. O% Gset unhonest-service 0

) v$ o0 x# }& l. W- Z
8 K: S$ `7 N* q9 F6 Qset oscillation 0

1 @0 ~0 h3 z3 t* y7 |; k0 \3 ?3 b! O6 B" N, C) c
set rand-dynamic 0
4 ?4 Q& y; r7 C. `
end* H: c* ]- R+ f/ ^( E
: j2 ]3 \1 s1 |
to setup-turtles
& }% d- m) y+ J7 j; A5 p, X6 Jset shape "person"
# d) Z9 A' N6 a1 M, Jsetxy random-xcor random-ycor! }+ y- U! k* N: _
set trade-record-one []
4 P8 e. ?8 b% U0 R2 q" B' K
; v' C1 c  i+ _) ~' w
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 t  p0 m& N5 I' b0 S/ P

7 [8 P# [" k5 u* O) s% f, C( _" i: |set trade-record-current []
5 c: _. B% i" B/ r6 Q' n4 q$ Yset credibility-receive []2 r" a& W4 }& F' L) ~9 b. |+ J
set local-reputation 0.5
" q! t2 |; ^9 H5 H6 Eset neighbor-total 0: Z2 Y" a: ~9 ]% M) Z  r: A3 b
set trade-times-total 0
( x' L( U7 r) F& l7 C3 V- L! `set trade-money-total 0
# I$ ^0 u; ]) t8 L2 y' x; \0 h2 i- jset customer nobody
4 r4 _+ ?- k1 c% a& \0 M1 @set credibility-all n-values people [creat-credibility]1 @8 c" H9 w' _& }
set credibility n-values people [-1]
) }6 |) X8 O. K" J' O2 p3 qget-color
$ n0 t2 _. ^; ^% d; Q
0 u, I# a3 l4 z5 o; j) K
end
" i' u) }$ O- y8 j  n+ I4 X
! D3 p/ O7 K( W5 Fto-report creat-credibility$ p" e, v- M* ]' B8 F" A$ U
report n-values people [0.5]
5 e7 L& V9 o2 h* e& ^/ hend
4 ^0 q  G7 L2 m! M3 _7 z$ E% ?
4 T+ Q# i: g7 v+ ^( f4 Ito setup-plots9 Z' e  \3 n9 g0 \; r8 J# I
2 X% ^5 Z, z: |" \) K7 e
set xmax 30
1 x/ x+ E6 t& E9 w" l

% k) D1 T% ?7 X3 V3 x( jset ymax 1.0
3 U/ w  E9 R) z4 u' J5 }

; Z; [0 `6 [% D0 |! Pclear-all-plots

% i+ T3 `: J! z& Y% ]8 f* |; f- `/ h7 W0 ]) y1 x
setup-plot1

7 F& r; x5 H8 u: `$ ~7 r! k* U7 L4 B8 h4 K' C$ ^
setup-plot2
& R, O9 z0 v8 D$ n
% n. P9 j, H( I  X; f- K5 ^
setup-plot3

+ d( i  ?5 }5 H3 oend/ c7 |' J4 C: j  f) K7 S/ R

: h7 x0 n3 j& {' Q- t;;run time procedures
2 p4 S& {5 Y! N& |) g! O. Q+ G, ^) ^& n. C, S: O
to go
% l; P$ `* h4 I# O. V7 @8 o6 J% L5 w& Z: a
ask turtles [do-business]

: z' P+ n- J/ N- `9 A  Gend
$ J2 b4 F8 x0 ]% \" ~% g
8 ]5 s6 K& K" ^$ I) Wto do-business
1 }3 G; g1 B# V1 X' Z' T

. t- Y9 V1 l" x% M) H$ q0 M% F
' U* }1 k- _6 R1 [2 f- B* M( w4 irt random 360
( D: p0 Z+ i" f- t% ?2 A# B) n2 f

  J1 J  }4 f0 [3 efd 1
7 ~, }( ~1 f  V2 n: `! P

; ^1 C4 N9 N" Z0 T( U; x5 Fifelse(other turtles-here != nobody)[
1 s% |# x4 A# m8 l5 {

9 j4 b1 n0 |7 B' Rset customer one-of other turtles-here

2 {6 f9 L. Y* z  g2 J: {. C$ Z3 e+ w' I' v7 c7 k2 {
;; set [customer] of customer myself
. t- k' M8 p" h1 p+ ~; U
4 X: T9 a2 b5 P4 _
set [trade-record-one] of self item (([who] of customer) - 1)$ \9 W0 A$ U0 h7 Y$ l/ X2 I  m! Y
[trade-record-all]of self) ^$ b: u% y) w' ?( g7 Y" x
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 }% N$ A3 y8 L* d  W

% o+ h  e8 Q3 t3 A) m4 z: @set [trade-record-one] of customer item (([who] of self) - 1)( F# c9 S& j, @# D6 `6 k3 k' G% {
[trade-record-all]of customer
/ m3 b' d) B% @1 Y4 M& Z& i
3 k" K" s( C* R
set [trade-record-one-len] of self length [trade-record-one] of self

+ Z; Y$ i. S! R' Q; h5 L
+ [, |: x# |& `set trade-record-current( list (timer) (random money-upper-limit))

8 A3 c5 w: Y0 C2 z! ~! v# F" H2 F7 W9 Q3 y9 e
ask self [do-trust]& E; Y/ \! Y" w$ \) K
;;
先求ij的信任度
* m9 N) E2 d3 g
* C+ X) y" B0 c: f4 iif ([trust-ok] of self)
2 X# _- h0 p  g+ C;;
根据ij的信任度来决定是否与j进行交易[
- V) r/ D2 ^& S% R# `' c, c. u  Sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ J" @* S8 j- N9 J. H) H) F+ {: @- @+ T  \
[

, b2 v. e" V+ e* g# @& ]2 S
8 q* ?' Q" Z; B* I* a% Qdo-trade

( g7 N" d1 {' Y3 S) r. J" r- z# A( o) w, N  u4 `2 l$ Q6 |# Y
update-credibility-ijl
. ]+ h; N5 p3 H7 g

& K- v1 V- t% r7 ?9 xupdate-credibility-list2 R  G% W; L$ {

2 |! R$ ?: d( @8 s
3 g6 Z/ O" o1 |3 P6 j0 yupdate-global-reputation-list

9 j; ]( V/ N9 f) F2 E2 v0 z
" l: h' J4 S9 P5 ?3 Upoll-class

, U0 A; n( j  Z) d* l  Y# F0 s
) ?8 C8 Q2 B9 i# A" ~% k4 i$ vget-color

  I5 H$ A% o- ^6 S( Z1 O" z# z2 j( q, Z. s
]], |: {0 @4 X, O4 E/ \
, d$ j: x: y  w6 A9 A- D
;;
如果所得的信任度满足条件,则进行交易- ~, r5 ~. ^: ~$ |/ ^7 ]7 X3 _

* e9 I# k9 ]! b0 C[

8 E) F+ i" T" {- C% G/ s2 Q8 Z1 V* _
rt random 360

+ R/ D. L1 S: g# J9 L& E
2 e5 c8 V, `& T+ m. Zfd 1

/ V8 O6 k: F8 R6 H- r2 |# Y! Z3 r# A
]
! d; p  o" G0 u) K
+ W, ?% X! d; B! n- i% [. }
end
- h5 H( P+ Y9 U9 ~3 D

2 ^# G% T/ L& }! u) {6 ]0 Wto do-trust
2 u2 ~  G4 A$ f( L. D6 wset trust-ok False
1 c% z& O* |& N& ~; J. s$ G0 B, r1 y- O
2 R7 s( \, t  W
let max-trade-times 0" O8 x! }( o6 A) q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ k$ ^8 M; B* ^' x% O" {- K
let max-trade-money 0
; @" W- `5 O* u3 v. Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 X& p8 m: b$ Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 E/ L/ N/ e2 a5 c( }; S
+ s5 E0 [# y. K4 b
5 U$ [! N! J/ f
get-global-proportion
. Q9 l  H0 V; S/ U$ Clet trust-value' `6 U6 X2 g, 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)

+ A+ z9 v0 Q; _6 q$ Sif(trust-value > trade-trust-value), L& K; \' I6 {* b* x3 d$ }
[set trust-ok true]8 C1 L* h" {# f4 ?! `8 q( q
end
1 G7 U9 l/ x; n& u& t( [9 w) k) _1 _; c
to get-global-proportion0 g# m' V  g- q1 g, Y0 E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 J; b* u. v$ L0 _1 G( F3 G% r
[set global-proportion 0]) ^2 V  h' y3 M: p2 Y
[let i 0
" X& b: ]3 ]2 W: S1 wlet sum-money 00 w5 e; B0 Z2 m( }5 h
while[ i < people]
( {" A7 W' Q# |! D[
+ Z# N7 i8 `, c, |5 B4 hif( length (item i
7 V  i% K' G  R; p7 R[trade-record-all] of customer) > 3 )

& `, V% f; ~8 U9 `# R[
3 D& p1 c9 k) |* \: cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" a, L7 k8 ]+ m1 b4 d
]
4 T. x2 x/ v5 i6 @$ h7 {]# I& C7 X) F! G- [$ z' h
let j 0
; y# C+ u1 r6 [3 a, p8 Mlet note 0
' `( z) F% Y+ y/ j$ ^5 |while[ j < people]1 B% E. x% H# g+ W1 P
[
6 [9 {  T1 v" n. T, Hif( length (item i
' f- X+ M  ^- ]" X9 K4 A& Z[trade-record-all] of customer) > 3 )

: i1 V: F' x  F" w6 c[- x! o. u3 c( T9 G1 T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); S$ E0 a0 j, R5 K: m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ B* Q3 y5 `: ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 r, i, [3 N5 u9 y$ b
]
* k! I7 ^4 u# J- O5 b9 ]  }; A]
) q  s1 G% G- R, ^  Cset global-proportion note
9 R. m& W8 V7 U7 i]
" _0 V6 u/ A' [& O. ~8 Zend  M& ]) Y7 k7 ?& u9 k3 i

2 u9 `! r$ G& Q1 U6 kto do-trade
6 R+ K: M+ J  `  d$ w6 I: \;;
这个过程实际上是给双方作出评价的过程* R" P- g* R% M7 m8 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ \" ~' H8 F. p* _; P" L8 P1 G9 S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  b' i5 Z9 c: j4 p# `- Aset trade-record-current lput(timer) trade-record-current
0 I; `7 J, I5 j( t; t0 L, x;;
评价时间( t4 G& [7 \; P0 t' ]
ask myself [
8 U- @. q1 x% C1 [9 h: ~9 Yupdate-local-reputation0 |4 o1 j% P' J; R6 }
set trade-record-current lput([local-reputation] of myself) trade-record-current& f! w. s) b! C6 A
]
' E+ O0 J, z8 ^7 z, v8 Y  L1 eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- G1 l( |9 J# y2 M& N" |4 M$ t
;;
将此次交易的记录加入到trade-record-one
  k5 b6 B$ T0 D7 W+ Q% C6 Qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ ?2 ?* Y5 c0 Z* ?let note (item 2 trade-record-current )
3 B$ R) @1 R' T" H* e; g7 Rset trade-record-current: l! C- i6 f9 K4 z3 B
(replace-item 2 trade-record-current (item 3 trade-record-current))
# t) s8 E. S5 o6 L2 O1 F3 N% F
set trade-record-current
  Q2 m4 s0 B: O& S(replace-item 3 trade-record-current note)' a* f: F& R* Z
2 h. n5 e5 O- d/ w

$ J) _. y' D: c5 u! Kask customer [! L$ L% w7 b: p3 t
update-local-reputation' C; V% O/ Z. ]/ h+ K7 n
set trade-record-current
$ l2 a: ^. k0 N3 k+ k7 J' L) ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 v, k" ~6 L6 l9 w: V5 S& S3 ~
]
) v. N0 @, p3 Z  i. U; P( V( j1 b! F
5 U2 G6 i, ]8 E" b' @7 x0 K/ l
7 {; t9 o9 K1 {' X  y6 J- c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' a! {) O- q& O6 j# c% E- J4 o

, N# `3 \2 T) D$ t% U, N) }set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% x- N& {" [. z# Y6 J. l
;;
将此次交易的记录加入到customertrade-record-all: K6 K, V: k8 {5 X; `
end
) T% d6 P# B$ _0 ?$ B! c  r3 w7 d! M' i/ Z
to update-local-reputation
6 M4 F- a- t5 ?# Tset [trade-record-one-len] of myself length [trade-record-one] of myself
6 S, O: l, O! L# l8 n6 _+ N. \. z# ]3 G6 ~6 y' x

  S4 q6 w! I7 ^# V  Q;;if [trade-record-one-len] of myself > 3
' r2 H4 b7 p8 |$ i2 P5 O; K
update-neighbor-total5 o8 Y; [7 S0 E1 n4 u9 ]0 y
;;
更新邻居节点的数目,在此进行. Z6 N, i) X4 P, h+ T
let i 3
' W# S4 M: [  Vlet sum-time 0
5 B1 c9 E* q9 e- @: i5 D* uwhile[i < [trade-record-one-len] of myself]" s0 f# i7 C& X* U
[
- y  U8 K9 P* Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), S5 v+ b- c2 |( G  m
set i5 W8 g% p4 m+ m4 D
( i + 1)

' T& S3 \9 A2 B: B4 D2 _) T]1 b- L1 A) f6 B7 j3 g& j4 }
let j 3, [, O3 X1 A7 n+ O: M- r( i: \
let sum-money 00 y' @8 }& t0 C% ~  ]
while[j < [trade-record-one-len] of myself]- @" ~5 S1 T1 h& y: h/ |
[& ~! V- g; v- T: C5 k) I
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)- `/ Z* C' j3 S7 \3 c+ A
set j
2 @+ T3 O& h3 ]& C1 }, L. Y3 w( j + 1)
2 C: k6 ^. a. x- L: l, p
]
: Q# d& E) q; `+ O2 {let k 3
" e6 |9 F9 D7 k# \+ g0 I/ ]4 a( R! _2 @let power 0) J% P9 k( X( H% w4 ?
let local 0# y2 N+ v+ G/ D9 O4 x
while [k <[trade-record-one-len] of myself]
* m$ e# G- W! B  R% o- n4 Z; o[
: l  K# b& n. @0 U$ t  e" lset 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)
+ p+ c( X: }: y3 X7 U6 kset k (k + 1)
8 J+ Q6 c1 ~6 ]& ~]4 V+ d/ z. T# y
set [local-reputation] of myself (local)
: e( d  ^6 }: }& K  N  Y' o1 Xend2 H  K# U& N8 a* @* _" S: }; T3 y
$ C6 G5 G5 d- B3 v7 e3 B6 {2 K2 m
to update-neighbor-total) j3 O. a" {  T! B4 s

) C. K7 A. _6 _* L+ r. \if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; c$ y4 x$ |; |' {: O2 m$ ^4 f* v: N& U; c

5 F; X: y' c. e8 d# xend
: {; s/ F' f8 ^, [- f2 q3 t$ _( ?8 ~# b% z+ }4 ~/ y+ p" ~
to update-credibility-ijl
/ z0 s( `. r' g9 D$ H. F" O! k
, r! t$ A$ u2 M7 n3 |;;
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。
, i& U4 q9 A$ Mlet l 0
# G7 A) h/ n2 c; }4 Q$ s, N' N3 Owhile[ l < people ]' h4 d0 n+ g! f8 O% L4 [
;;
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( H/ j9 g+ w" R9 f8 c
[$ O8 U; ?- {* S! T3 t! v" K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- C) B' ~+ c1 D/ l
if (trade-record-one-j-l-len > 3)
) Q5 v: T- l7 E2 ]. l- j6 a[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-one9 N" j" C5 N' L8 T9 u+ A
let i 3
7 t4 i  t& k' b( d& U0 s! blet sum-time 0
1 Y1 t. N6 L, C6 Gwhile[i < trade-record-one-len]- N0 A  i. d4 H# h  N# r
[' T) W: a/ b/ ^/ ]4 y9 S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 f" A* W0 L2 v6 J! G  T+ S# [set i* o5 `  Z# @$ d
( i + 1)

1 a& n& Y: Z  s3 R# @]' N, j" [$ |1 \' h
let credibility-i-j-l 0
6 a1 U( e0 Q# F% d* Z;;i
评价(jjl的评价)
4 A/ U2 D4 @0 h, x/ h# rlet j 3
: ?  ]3 C2 ^2 Ulet k 4* j# S1 r, w& t/ x) O8 O4 ^1 v
while[j < trade-record-one-len]: {3 r' D) ]* }
[
+ G' h$ o  b& C& L4 }8 Gwhile [((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 N8 H# X0 k. Hset 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)
) [: y7 X; w9 s: \! p" g- C" hset j" ^# h0 ?  i5 L  ^! N
( j + 1)

! q% `* N/ B4 y- |5 j3 y]/ L. j; D8 y: `+ f6 m
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 ))
$ q* s' r1 L: I: i- E2 n4 H
2 I$ ~, q+ p0 O& u& ]
& o. R7 q8 B( _$ {3 K# T) x: Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& y% l" b9 {" p5 r: `  D
;;
及时更新il的评价质量的评价
9 ?5 ]- F& C$ W& zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- w7 r5 C. k5 s4 _$ B$ n1 `4 _4 qset l (l + 1)- Q4 e7 `: Y2 t# {0 U
]& |; L# u* Z$ m
end7 e) n" X/ y7 N$ G

7 N+ m. P. h; \' _! o/ Mto update-credibility-list  D! W" x' G. _$ D; p
let i 0: t0 J% t4 j& Z. l0 c% M( b7 I# N
while[i < people]
$ ^) k2 `! L  Y( l& T! m[# V5 U, T4 a6 ^3 b& q
let j 0
7 ?* ]5 a3 W0 B4 A# A( O& nlet note 0, q/ T2 g: r8 D. H: L
let k 0
4 I# y6 Q: V2 Q* E; ~;;
计作出过评价的邻居节点的数目9 J. c* ?0 v4 s. F, O
while[j < people]0 t4 x4 V6 C5 _0 y' S# r, y5 |4 V
[
; x4 X3 X0 p9 D/ F: R. }+ n# X# iif (item j( [credibility] of turtle (i + 1)) != -1)( f; _4 l# V. O9 w
;;
判断是否给本turtle的评价质量做出过评价的节点
+ O- h5 E6 x; L5 P" H; ]6 m[set note (note + item j ([credibility]of turtle (i + 1)))
; M$ Y2 k( \& b* r;;*(exp (-(people - 2)))/(people - 2))]

* _- [% o: f, o1 oset k (k + 1)
' K. u' A0 ?; n% b]
* D/ A7 F* P/ b& {7 ^set j (j + 1). O7 A( g+ r, h4 H3 t+ O9 y
]  \6 z% {1 T# W) X
set note (note *(exp (- (1 / k)))/ k)
3 A, Z0 U) g+ F: P( }$ Tset credibility-list (replace-item i credibility-list note)
5 p1 D% L+ J0 S1 ~set i (i + 1)
/ ^1 A! Q9 [% Y5 ^  \% q]" @- a' g8 j* e% r9 |) K
end! S2 y8 \% l  V3 y& K
  ^1 K6 {( C( [* B! |
to update-global-reputation-list
4 i6 z! i+ c1 N, N. Ylet j 0
& i. M$ Q+ H0 m: |; j& L5 o+ i5 f% Hwhile[j < people]
0 y/ j" Q9 M, ]" G, {0 k' E[7 x# A0 R9 O1 D6 O
let new 0* T) r2 |6 H0 t% M: _7 b6 ~
;;
暂存新的一个全局声誉
  l5 u: f7 B3 t  Flet i 0
& e7 ~5 j/ a4 K+ A7 E; alet sum-money 0
- Y2 h0 B5 t* e4 s0 X1 ~$ [) L5 clet credibility-money 0
5 M5 G+ @9 O4 dwhile [i < people]
9 Y( J& x- ?& N0 E[
$ }7 _" v( r" v$ `' y% N6 l% yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' b4 }- h. p* j3 O/ i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# c5 _  D* \. b; Wset i (i + 1)
/ J- R# ]5 E: `, \- V$ |/ P]6 M8 W  t3 B/ B, \0 A3 [
let k 0. A7 c8 S3 @! \+ \  L3 N, N  r/ Z
let new1 0* W6 ~" n" U' J% C+ x6 J
while [k < people]' w  V  t6 [* N. I' F
[
0 B: z2 d6 T- B& Q( {! J" 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)
! a# y, P/ ~' r- Pset k (k + 1)
/ l3 p- x0 M! E* G! v1 g/ \]
1 g& @' L, k  }. A% bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: j* l, c  p5 h; kset global-reputation-list (replace-item j global-reputation-list new)1 k/ L, a8 Y$ w2 n, ^
set j (j + 1)0 D* [* y0 ]; a: E6 R$ U
]
* b! Q% z# l) u  pend+ f5 |3 ]! K) X/ \/ I

) T/ i$ I% {7 \. |$ u% x  w8 j: Y& @2 i& M8 w5 w- c0 ?
; R# E& Z; e& T5 N$ _
to get-color
4 O7 k! V2 t! K' S0 {: p2 [2 ]
; ]5 s. ?0 ]  s) K/ zset color blue

+ G. f  X/ I# ~6 |9 Uend; S. E" K% h5 \6 ?0 [
3 Z. s/ @. P) F/ ~: ?+ F
to poll-class6 e; _4 A2 h" X; M
end
. Q  s% \! [; q: N- g6 P- Z
; p2 a& \2 J' ^" S! p; Mto setup-plot1
1 c& M5 {" t3 n% T+ a, _
+ o( M/ E5 c3 U6 ^set-current-plot "Trends-of-Local-reputation"
5 ]6 K, F6 u# F- N. J- p

4 D6 k* W- Q- U7 ~( {! B7 \set-plot-x-range 0 xmax
/ H  x, f% ^; v1 x

  S+ f, y5 H$ }% w( V# Kset-plot-y-range 0.0 ymax

8 U' H- n& n6 ~/ g8 x1 Z: Z" |end4 x1 K7 Q5 Q2 D1 E3 ^' z

/ o- N2 m: |* ?* R" r* hto setup-plot2, ]7 [' V  c% {+ a1 v8 e6 \

0 S9 O& w! k4 f  {4 qset-current-plot "Trends-of-global-reputation"

! V+ J6 x2 z9 @0 {* q% \
7 y. x, \) f2 P! Jset-plot-x-range 0 xmax

, f, Q; `- x* O' p9 `" P9 d. c. L
6 J6 J% J6 u3 n+ w- b, Zset-plot-y-range 0.0 ymax

' @; t/ a* d& L# ]; {0 O" Dend; v9 a: K+ i, t8 P, t9 z, h
" ^) k! g2 H* z
to setup-plot39 u: r8 r9 v. y5 w2 i9 L/ t. A

( A& V1 \% |' gset-current-plot "Trends-of-credibility"
5 f8 k+ A8 L' F# h& C2 T

& h! l2 m- @- q. \/ v  x) pset-plot-x-range 0 xmax

8 P9 B* s+ D. Y! ?, ~# _" c
* J% |/ V1 A% w6 K9 z2 J; s# zset-plot-y-range 0.0 ymax

( `$ C3 B) M3 f1 Iend' O' Z) N; R0 {2 V
% s# [9 d5 I/ \: g
to do-plots/ g0 `( Q$ F7 R; K+ j% w- D0 g" H
set-current-plot "Trends-of-Local-reputation"
1 F, `- ^2 ^: q1 gset-current-plot-pen "Honest service"$ P- h# `$ z3 U9 j- p4 z
end, N9 p! |8 F3 t* R: j1 ^& M7 d

1 Z- K" k: A2 B( {3 n! C  r; y[ 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.
# G; x3 S/ J) n3 V: O
" M) f% p& P' V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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