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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:
+ O/ o" D( J5 J. s, Zto do-business
' y; K0 w* x, R. z3 J4 n2 ~* n rt random 360
% ?7 i# L& X3 q' o* u fd 1
! D9 {9 g2 x# x( m" Z- k9 h ifelse(other turtles-here != nobody)[
# |: h* t" d! q4 _! [3 {   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.
8 S+ X  ]" D2 f; l   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ J2 A- W4 E4 g9 T5 W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& s: D' N3 G( g- A! p! u# C$ }! F3 e
   set [trade-record-one-len] of self length [trade-record-one] of self- E! F* o- d9 \3 Z
   set trade-record-current( list (timer) (random money-upper-limit))9 c0 I4 r) s% m# e2 h
5 G3 i4 K9 U7 t# g  B
问题的提示如下:: B: f# Z! O, T( q

5 k3 b, k9 [5 J5 |' \$ Aerror while turtle 50 running OF in procedure DO-BUSINESS4 o2 I  I* P( `2 u
  called by procedure GO3 q  @: @2 b* e' T+ `; g; g/ O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 }7 r% i0 j. a+ w
(halted running of go)$ p4 A; m+ Q7 z6 P8 J; D

5 }$ v* {5 k+ K' k& `& O9 U- N& u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~~
0 a# S3 u  g5 f' _! w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
+ Q6 b9 N& s# w! F5 Y; a0 s. O9 `globals[5 @" E& W+ e$ r8 z+ t
xmax
& C& S* v2 \: I8 M# J- [ymax
, i$ Q" }9 o1 ]global-reputation-list; @% C4 m  a, g& }5 I

7 \5 q7 ~* g3 g;;
每一个turtle的全局声誉都存在此LIST
, x2 I6 p6 m9 d% S8 Y; W3 ~) r+ X5 lcredibility-list9 r% j: d0 [) Z8 C6 f* Z* E' C
;;
每一个turtle的评价可信度
5 l" X* F3 x; S1 S" Zhonest-service
3 u0 O( ^- w1 |/ u7 Q! p6 d! C7 w( sunhonest-service
8 a2 P, D" e9 p6 c* s# xoscillation
& E" ?5 B5 E  I6 a: \$ e9 q" ]5 ?9 Irand-dynamic
6 r7 ^8 x4 ^& A$ A4 ?], W2 {5 s! ^) v) h% p: `4 u

% y. C" ?( A; |3 [turtles-own[
, Z' h0 U! b: v4 Strade-record-all
+ j; ~( ?- i% ~;;a list of lists,
trade-record-one组成! v4 Z. C4 k" d* D9 p1 C
trade-record-one+ x# e- B) k( ~
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" K2 Z3 p) Z8 i1 {% \5 |0 {2 B- Z% [& @

: d6 x# S! k' S;;[
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]]
' Z5 o. ~1 \$ e. e# e+ Htrade-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]4 h9 N6 f! p$ s! S
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list6 y' |, p8 \5 Z/ {, F/ ?
neighbor-total
1 n: ?( b7 T$ U' y+ V& k$ |;;
记录该turtle的邻居节点的数目
8 a5 @* I, F4 `3 Q" |1 qtrade-time
' U8 Q6 d  G. y% T, y/ X;;
当前发生交易的turtle的交易时间
* _& X1 M+ g8 N0 R# F* U9 H- Dappraise-give
0 q# ?# \3 L# e0 ~5 L;;
当前发生交易时给出的评价9 e2 e( H0 k( ?- C: ]( e1 y5 i
appraise-receive! f' w" r+ }6 v
;;
当前发生交易时收到的评价
' Q( Q4 h( g; a/ e3 w1 U- Aappraise-time6 l; B) S1 F2 l7 J* _  n7 B
;;
当前发生交易时的评价时间
, v( d% [7 c7 V- l8 flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉, P9 h8 u6 z/ {8 ~- `2 ?; s
trade-times-total
: H* P4 R2 T4 K6 U2 b;;
与当前turtle的交易总次数8 ?# u. g2 z9 }/ M
trade-money-total
* _7 u, E, ~  m. K8 K;;
与当前turtle的交易总金额
8 A3 N. M7 v7 q# Flocal-reputation
/ i; l- P8 Q7 ?) H! i1 oglobal-reputation/ H& w% ]% t7 }6 o, O
credibility
8 N5 X' E% M. G" t4 M2 W% O7 N;;
评价可信度,每次交易后都需要更新
  A6 c! |/ r2 g8 p) Z9 m. Dcredibility-all
( p& F! f7 X# e$ J7 [' K/ x8 J& q8 J;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
- u" x0 H$ p& x  M5 F9 r& ]) R) z# e1 q+ @/ D+ F" h9 b7 k
;;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  H- X9 {  I8 l
credibility-one1 C4 @; m% H/ \2 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
+ m; X: |1 A* ~: l9 w9 ~$ L, T$ C" fglobal-proportion( _' j1 `/ l, h4 g
customer' J* s& Q: k7 E) F. ^* M
customer-no; i: ~. r! M0 b) T
trust-ok3 D. D0 }. R' W' ~  Q: e1 X
trade-record-one-len;;trade-record-one的长度, F6 \, [7 l' ^
]2 N8 @6 G% R8 q9 I, @+ L& P

* m# ?* h1 }  Y5 C" v;;setup procedure
# F. `: e( y+ b' O5 S  ^8 G  W6 H) l$ @
3 X5 |# `0 N- s0 N2 Y) cto setup
! o5 H. x, B+ }2 g  J9 z# Q4 j; ?9 l2 m2 k; @' ?1 b1 c+ i
ca

$ Q" W, S4 b( Q- V* ^! w1 E, Y* m3 L9 N+ h9 ?
initialize-settings

' ?% B( r3 G( m& g! p9 z4 p; t: W& W6 B  K" }0 K& `
crt people [setup-turtles]

4 {' U" w4 g* H* i- P5 L  k
% A% q6 E% v6 Y; E5 R2 Wreset-timer

6 }$ R; G9 @4 w" b9 P1 K; ], A  l0 [$ N5 X) u7 l
poll-class
3 M1 ]% f. ~) P+ A; d: ?

. q% p6 l; E9 ksetup-plots

( I( Z/ z) \6 J( i8 w- C; d8 P. r/ }
+ I7 L. N8 P( _9 f2 Edo-plots

1 I7 O4 ~7 S4 f. H: u6 oend5 L1 y, r; L2 a8 n8 R

3 V" {4 h1 k5 D3 T8 T( xto initialize-settings' l2 T7 {0 L  ^0 W

( f  ^8 P7 Y& V1 `set global-reputation-list []
3 L' V" G, j- X3 S7 x

/ g( ^; a: X/ ^# `) Rset credibility-list n-values people [0.5]
1 @& ~; q4 N3 l

' M/ S* ^# J% _/ J, h) r+ Uset honest-service 0
9 ]/ @4 G7 U9 O* @
, X5 I& S4 o2 X7 D, s) _4 q
set unhonest-service 0

4 f. ^: G0 `- i! N2 P' C6 ^$ O
. b# }: y% d0 K5 I2 o2 ^' Dset oscillation 0
7 D5 l4 h) M: b8 }  o% R4 o+ ]/ J. W. T
1 U5 B, x2 q9 o0 E
set rand-dynamic 0

' D3 l+ U4 @! D. @* [5 Z& n. u3 @end
/ G/ k  D, M0 d# H  @; _% P4 @1 ~' w& w! w3 W8 |' O
to setup-turtles
# r  q! y% {8 t- h8 ?set shape "person"
# Z0 b' S# l. x3 Q0 n% I/ H# ?setxy random-xcor random-ycor
# a( c7 X9 d, D* x" ~3 f! t; zset trade-record-one []
5 Q, g+ {$ L- l1 t
% l  e$ X& p% C$ u2 P, W5 {
set trade-record-all n-values people [(list (? + 1) 0 0)] : \6 a8 `8 V6 P) T* D; o
" {. L+ \& w  l# `5 K
set trade-record-current []
( K. X7 S: V7 I; ^0 A% v; Qset credibility-receive []* f% a% C+ c+ F
set local-reputation 0.5; j( J8 [+ I& M; s
set neighbor-total 0
, e( ^( g. |5 U& S! x5 hset trade-times-total 0
. q' H8 |$ m0 G/ ^5 Bset trade-money-total 06 N, J; W6 B+ ]. t
set customer nobody: Q0 g6 \- `% S' P# H9 b& K- K- X
set credibility-all n-values people [creat-credibility]6 H- D. N9 b/ ?( `) A8 v
set credibility n-values people [-1]1 i1 r( g3 x& M' W4 P
get-color. E+ L: F# r0 ^# ]3 q5 u0 p

& S8 `/ f% j: P8 T" lend# W5 l9 S/ ?  u4 x5 Q8 X0 k$ o  o

5 U# r+ J" Y! x0 v4 ?! y$ ?! Wto-report creat-credibility4 t: H5 s& s- Q6 }7 r- q; o
report n-values people [0.5]5 B9 v1 @* q  d* v- v' d& X# n
end0 l: M0 R2 X+ |0 a- h5 j4 [
7 d! x* B# O! U5 r5 {
to setup-plots
5 W1 S& r$ s, p; K, z- a8 E, i; S- L( E
set xmax 30

; p2 Y8 N) e2 u
8 D" x' B( [' e9 C8 a* Rset ymax 1.0
1 l* h4 K% f( ]- e3 ~) j
* i8 o5 n; |2 p3 r
clear-all-plots
& J0 z5 k5 j. ]2 p
( w; A# h, i2 t
setup-plot1

7 D% d  G1 N( x- d% S! v- h4 x$ Y* r3 m) U1 }
setup-plot2
/ r) l# b* ^& D5 ^4 W- d* ?7 n
' S' U! D- k+ B' X/ x7 _" W
setup-plot3

% h! N1 U3 E3 B6 Q! vend% D8 o) u3 G5 N

8 J& e' @* A  W& Q7 h+ K;;run time procedures3 n+ N9 I/ @, f6 _7 a2 o. l

3 v0 ]) s, q1 i: R% z1 B1 _! P3 Cto go
" \8 x; \9 s/ N- D
/ H/ k& R6 i5 Y, X9 [ask turtles [do-business]

" A/ |7 B2 ^3 M8 ~  _: v1 yend6 b0 ]; o2 P2 J

. c8 n( q8 w/ o; sto do-business 3 d) _6 x& u  x+ u. {

! G' ?% Q- M' m$ `1 ^, b9 B, v3 s4 L
7 v$ @: w" O' b$ mrt random 360
! F% C3 b& Y, p. h$ g

0 {% l( d/ b) n: Qfd 1
+ k& H- s% X* _2 ^

/ |3 I7 y5 r, yifelse(other turtles-here != nobody)[

% t1 x7 R7 n4 X1 p1 q& H
# Z2 B, W' i$ m4 g+ Z; y7 H: gset customer one-of other turtles-here
7 \) d  h8 }4 |* k* j

* m: J7 U2 B: t. U$ {$ ~/ i3 g0 Q; o;; set [customer] of customer myself

1 U$ f0 _+ I0 u6 o
+ i  V% r: [3 @$ E7 dset [trade-record-one] of self item (([who] of customer) - 1)) ]. |- B/ {% D
[trade-record-all]of self
0 t  _& ^, B. C9 C9 ?  ]" @! t& @# Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( O8 a2 |, m  O5 |- K& k

- z/ n  U' _4 @set [trade-record-one] of customer item (([who] of self) - 1)
5 q% X/ ?8 D; g[trade-record-all]of customer

3 o9 `  X  S1 `0 w8 k. B2 [  m& V! A8 V8 N
set [trade-record-one-len] of self length [trade-record-one] of self
$ O6 _. Z  q2 y- `7 d
# \. B, Y& _7 t9 b8 A
set trade-record-current( list (timer) (random money-upper-limit))

! J% c: T) U. G3 X  u' @! s' }* ]4 f/ s* ?3 i; `
ask self [do-trust]+ V0 r( }5 e/ V$ d, Y
;;
先求ij的信任度' Z# c! }) V$ x$ f
9 x; G$ a) E# }3 ~" Y7 ]/ h
if ([trust-ok] of self)+ X8 c2 K* c! d& l
;;
根据ij的信任度来决定是否与j进行交易[! C8 U, m6 m) c- i5 W( c
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 w9 E5 R' w: c/ g& E- p& g9 z

" O7 a+ k0 j2 p% M; h$ b2 ~" x[
, M9 v1 W) `2 I! I9 w3 W

1 g8 ]$ l+ I% k' d% \9 H$ Tdo-trade

$ s+ R5 h7 J- d( r* o7 \/ b9 |/ _; s5 N0 {  L
update-credibility-ijl
& f- Q# ]! e, n9 O6 x
' d3 Y2 `! @( X! a3 F* }$ u6 r3 b% S
update-credibility-list
+ a. _7 L) u3 X2 _# h" H2 U

6 j) c* W& ^+ }" p1 J# y0 ?
4 \& @4 l' h5 R# N  G. }update-global-reputation-list
7 ?) B; D# i. {; e! f& |& _+ u
1 u' w! B( {% @- C- I9 b
poll-class

! h5 q9 S8 J8 s) r  B5 e& H6 i3 t4 J; b2 G, `  @1 k7 S3 D, D) b% ]. W
get-color

2 ^1 ^+ y4 A' l% S6 H9 _2 ^$ D
; V$ A1 P: A* O6 J]]
. p5 |+ C+ d$ C1 |1 ]
" ?9 [$ o8 I3 E;;
如果所得的信任度满足条件,则进行交易- K  i2 W2 a6 u! [$ q. M( J" j( m# o
1 `% W7 C8 }- P
[
# J2 G4 L) @, n3 A+ e9 A  n8 p; I

8 O% C# N' h+ r9 F& {$ n. }8 nrt random 360

3 u1 o- [, y% q
7 n; \; \' W5 ?& Z, C; ^" J  Tfd 1

, j) Z0 [6 T( k2 T. W+ ?, |: ]# p% L
]
" M% G4 \% H5 Z* b4 b

# B3 D- j! g- b+ N. G4 T3 T3 m& m% ?end

$ {- V, d9 U# U# ]& H% E; p" h
+ h: q' c( U; ]9 x8 Wto do-trust 1 m2 [0 G) E+ @: k
set trust-ok False+ L$ x' q  T* G6 q# j& a  V

. d4 w* ]3 {; _  k7 [( \4 J
: X! a+ B+ l2 ]( K
let max-trade-times 0
# v4 F  f1 R# m5 R" ?3 gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. ?! [* T, X0 m% a5 ^
let max-trade-money 0
5 `* Z# Z: ]6 [: F: g$ c7 r( l1 Kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* A' u/ c! H+ W, j, vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* L, _" G7 Z1 o! L4 I" {& T

7 n0 n# \. ?* z

5 Z$ p2 A3 L$ ~9 M/ cget-global-proportion
% b7 n; o( {4 ?let trust-value, H6 `: q! q5 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)

# `3 d) t- R% H) e6 N3 Aif(trust-value > trade-trust-value)7 Y( F- g4 x* I2 y: V3 ?& }
[set trust-ok true]
3 v- I% p+ q8 b  B( [end
) v  I: U2 i( I3 ^4 Z9 Y. t( R7 s0 R. Y0 \) i% B  [& N1 Y8 G& g" U9 n
to get-global-proportion
0 f1 p* g% ?+ i, u# j0 P0 H1 Mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. ?# Y* P" Z6 B[set global-proportion 0]4 ~4 @/ C4 g! S: H. k9 C
[let i 0; j) c7 L' N+ \. `. B
let sum-money 0; T0 L6 v4 C: U) e" d
while[ i < people]
. V! b" f1 w1 Q" v1 \6 p' Z[0 j- o1 Y$ R7 Y: [0 V& ~0 i
if( length (item i/ n- T0 @, D# G
[trade-record-all] of customer) > 3 )
$ V5 G' I; f* c9 P6 Q
[' S, x" V0 p) l/ w5 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ [& k/ g( I0 p6 O; n1 o; s
]
: O7 ^0 q- ~/ X% S( T* Y]3 N2 `* I" p7 p9 V0 t1 T
let j 0' b4 W: H7 D; @* U: w. o
let note 04 N- P" U" N& N+ g% Q
while[ j < people]; Z+ x6 M/ m2 D; i' d/ f
[  }1 h: U$ X* |) @7 E
if( length (item i; X" R7 @/ G; E. q5 i3 \
[trade-record-all] of customer) > 3 )
; \$ I$ n' M) w% N0 G  c0 @( {
[
# }  V7 }7 p7 B. t- z$ l! kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( M# i& h3 P$ ]7 W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. P- S. _4 O6 q- E! ~1 r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& a2 I% ~4 ]6 F# P6 u: `* E]5 }, L/ t, v4 I
]
) M0 B- ~: ~9 J: d4 sset global-proportion note
+ T/ Q3 Y! g3 D1 ]6 `]
  L7 x: n# n) [) v) S# y% }' t  jend  ]. Y4 D8 m1 f0 r4 W
6 g/ b# |' d3 o  ^
to do-trade
% k# [, @9 P. e5 G4 t;;
这个过程实际上是给双方作出评价的过程
+ \) i3 d' R' S" aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ k$ S+ H$ p5 }  Q" D) `4 i! p+ y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: ]; O6 B4 N1 w& {9 o1 Lset trade-record-current lput(timer) trade-record-current' y5 R' ]7 c4 p
;;
评价时间7 b$ I& n/ Q8 E
ask myself [
- }3 n- W& o( K  J  Z3 ~update-local-reputation5 Z" A, j% g4 k' n! k
set trade-record-current lput([local-reputation] of myself) trade-record-current
- N/ |, v1 x" |/ l]6 k+ s  ?  B: y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, H8 i/ `# _- }, i5 V. {
;;
将此次交易的记录加入到trade-record-one
7 e* o1 x: h- U6 qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 D7 _5 r( y* p9 a3 W6 Y4 dlet note (item 2 trade-record-current )1 |: x; y/ X* S3 [1 l
set trade-record-current) }: h8 {9 b* {0 \9 a
(replace-item 2 trade-record-current (item 3 trade-record-current))
: w5 s6 e! p/ w& j$ ]  p, g
set trade-record-current
6 C. r" U/ E) w2 c6 l(replace-item 3 trade-record-current note)
- J! G) J! a6 p. d5 u
5 L# N) G* Q2 ~% }( A. A: K: o
# L. |% z! C: p+ \9 S. Q
ask customer [
3 w3 Y4 e# w+ z! Yupdate-local-reputation
2 o. J% t& J, I7 D0 mset trade-record-current, k) s6 }+ _) h& M
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 ^+ q1 K/ k5 L) l3 P( j( u
]4 f" e3 `4 r2 a9 Z

. F6 ^7 M6 g7 @; N
8 r6 l/ r: b- m7 R, B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! b; z4 z  `: z* h; o# V5 o# n; \
" n5 n4 F; z0 V, d: V: G% F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% ^5 {9 {$ G6 [4 F6 Z: H, |
;;
将此次交易的记录加入到customertrade-record-all
) @$ _2 }0 M- h& A( g) E' F; {% nend
4 U- d4 `8 r3 X( N4 c
; u/ C* [% o8 {3 v5 jto update-local-reputation$ ^$ G8 n0 o* B9 F2 B8 V- Y+ j
set [trade-record-one-len] of myself length [trade-record-one] of myself" ?/ j( F. H% |
: f; q) M8 u0 G$ Y9 b, [& ]. C

9 m) S/ W% K# Y9 _;;if [trade-record-one-len] of myself > 3

7 Z2 P5 u( D1 A' b, y+ }, h0 a+ k$ C: Wupdate-neighbor-total
0 l, U, T: T; m9 y7 }9 t;;
更新邻居节点的数目,在此进行9 E: a* S) b" z4 v& C# c; P
let i 3& A- e& B- P% N. r' Q
let sum-time 0; o" X/ V" l  `' l6 w5 c( w
while[i < [trade-record-one-len] of myself]
8 v5 d( u7 ]3 V' Y[7 s0 k! s8 ~4 Y/ t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): h: Z2 E9 X5 g5 e! _
set i
1 A! g8 w8 F; q/ k. y( i + 1)
% r1 ^/ M6 H& }9 g
]
! r0 R- {# q3 U3 E) X' Ylet j 3% A2 C! r4 d$ T3 @
let sum-money 0
. E; V7 @$ q' n. w$ \, M! s4 Vwhile[j < [trade-record-one-len] of myself]- b$ J2 [8 U# b0 _# A( `
[
' @, p( J" Z3 Oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! v4 {4 u/ A/ D
set j
3 d  x$ L, r. U+ M* d( `$ Q- C( j + 1)

5 S) U& O4 `! i% o]5 O8 r% R0 Q% D& Z# d
let k 38 R& w3 }& l. r( c2 }  Y% V, c
let power 0
% H% e. p+ M4 olet local 0
8 Q8 y. {$ [5 Y) N  u# mwhile [k <[trade-record-one-len] of myself]
) d) \5 c" [5 X# z9 n+ r6 m[
& q  t6 Z9 ]2 R' a9 kset 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) 5 i' o2 K$ \1 F  V/ u3 I
set k (k + 1)
2 M1 ?$ a+ o# X! N3 P/ u9 a]4 w) {- ^6 _) k$ ], f
set [local-reputation] of myself (local)/ ?) `  e) a6 W0 y9 L% Z
end9 u- F0 E, }7 Y- u$ ~' \) l

3 p( j# E; Q, H1 x. P# B6 }% Eto update-neighbor-total
& Y4 T! _, l; m/ t* x5 A1 s
+ }$ a: e/ V: F) k; xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ |. F0 ^" M2 ?6 q4 z3 U

% M1 X4 @1 u1 `9 T
3 O9 F4 E2 K4 e6 T0 h
end
$ |8 \5 X# h& `9 u, k2 _# ?
3 `2 m( C* j& `2 tto update-credibility-ijl ( C# F1 K' }8 p6 v

1 e* x# j6 p# v;;
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。  z/ t; q9 f9 @; v
let l 0( x" d# {# q# `: ~" I% c
while[ l < people ]
( [; N" Z+ ~7 @/ v  O) |+ ?# };;
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
+ O- R" d; k/ F: d3 Y[
9 e' N5 R4 }7 K- P$ F$ b1 flet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  l5 ~1 B" ]1 {$ d: i2 d
if (trade-record-one-j-l-len > 3)
2 F* t5 l2 [3 V  s9 V/ ~4 {7 [! b[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
. i4 j" ~$ A& `7 \: ~' N4 wlet i 34 j+ p+ i* @) b. ^$ |# E" j. ~
let sum-time 00 a' [4 ?8 V: _
while[i < trade-record-one-len]1 [9 Y( F$ i  g6 s" Z2 s; Y' q
[
2 K6 q8 I& [9 \9 Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ F8 u1 a3 D# C4 k
set i
( B  e3 C" a3 s6 \( i + 1)

: t6 P+ k8 C4 H& e]+ l6 t4 H6 t3 o, Z0 W2 b
let credibility-i-j-l 0
; t. X! @$ L: v% f+ m;;i
评价(jjl的评价)
) S, Z6 J+ W/ }0 D) a: glet j 3
! F  u" |/ J) d0 plet k 4
- C; S9 }! k3 ?$ g2 N& o5 twhile[j < trade-record-one-len]$ C( P- Q. \5 N& ?- D6 i1 e9 \+ Y' ]
[
4 m! ?  x/ H  R; fwhile [((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
8 W/ x: J, ^. V# x6 M. P  vset 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)$ w3 `) l9 T4 Q* E
set j% W' k7 P: C8 Q6 s( |* U
( j + 1)
: B7 ], N" X* t6 }$ ^# q6 B% \
]
7 b$ T! I% F; q9 y. yset [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 ))
7 X0 j, X! R+ A$ B& T4 J$ y3 I' h
/ c+ y1 I) M$ k" \% K3 i
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# n4 @7 Z6 J6 b- B;;
及时更新il的评价质量的评价
+ ^' [0 u4 x  w9 n. g' mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! I( k2 y0 E  }7 U2 wset l (l + 1)" Z! L3 F; o# g$ t/ F
]$ u. ^  o9 u, P7 {' T% c+ p' [
end$ t! m: R3 ^( v: }

9 I8 S; K7 k: p! T0 z3 ?to update-credibility-list
) _( u" D+ P9 l! o1 F1 v" y1 z0 clet i 04 f" v' F! i/ X$ k  F) R9 _" x
while[i < people]5 \  K, {. P8 X5 X. j  K. ]: U
[
2 q  e7 n. p: f8 ]$ `let j 0' s' z$ M" n0 q3 d. M. {* \
let note 0
6 Z4 l4 B: g* M* m6 x) w4 P8 }let k 0
  Q0 O  ~9 D8 d' `- d. Y! K;;
计作出过评价的邻居节点的数目; L6 u8 M( L  S3 E7 o1 n
while[j < people]
- o; j4 v2 e& h  e$ P3 ~[
5 t' J, t. v6 @2 g1 |7 l+ wif (item j( [credibility] of turtle (i + 1)) != -1)- g9 Z8 B2 B# J' S! E
;;
判断是否给本turtle的评价质量做出过评价的节点
3 Y% a: y% y$ h) o+ B, k[set note (note + item j ([credibility]of turtle (i + 1)))
: [: M8 h% C+ {4 r+ K;;*(exp (-(people - 2)))/(people - 2))]
5 x( B1 ^) F) w; h
set k (k + 1)
  o+ C$ z0 L) O* p8 J7 W* R/ T]
' v- f/ h* {" X+ i: \set j (j + 1), B. u/ B1 x* s' [; q1 ^! z
]6 x6 I& Z! w' M  a% l- R
set note (note *(exp (- (1 / k)))/ k)
$ B" m9 @3 @4 o" @; ^set credibility-list (replace-item i credibility-list note)
: m  V8 Y/ ^+ V" mset i (i + 1)5 L' y/ j1 }* \8 ?' G) c
]
9 X' T8 [- p; S- J$ E7 Gend) f" K1 s6 n$ k2 s
' ?5 j* L- w6 I  a, j0 D. w8 ?% V
to update-global-reputation-list
! \; y  }" `' W/ Vlet j 0
6 D8 _- F/ l7 g5 pwhile[j < people]
0 ]3 d0 X. F0 a2 B- p/ z8 s4 V# x[
4 P/ |1 d; s4 v" `1 \let new 0
; V; f1 M" ^2 w) m+ z3 J9 w;;
暂存新的一个全局声誉3 L% t! _0 [$ {' V- `
let i 07 @4 `  q7 x* X5 [4 n* f" }. L2 t1 q, h( h/ a
let sum-money 0
3 ~( j: Y; x$ X" Q/ olet credibility-money 0& l  U$ D# ^( s; I
while [i < people]
$ Z; h  w% }& p- t1 L1 o* i[
4 V$ {  Q- r5 L+ P5 E. Rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 Q+ D, c( W* z+ t* }! ]
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 m: w, y2 `, }+ I
set i (i + 1)5 H: K# `% B+ G8 X' {: ~; Y( o
]5 Y5 E$ L- k1 D! ^' G6 ]6 q* u
let k 0
: V3 Q' I6 P2 D5 J1 Ilet new1 0
' I0 Q" w- S* V( fwhile [k < people]
# d8 a3 n# M+ o$ z  ?' |[
7 R# [3 h+ R+ C, U( _! Bset 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)
0 ^4 }$ o! O! G; \* ]: ^$ `set k (k + 1)+ c, ^6 K% b; s) u' U+ e6 j4 B
]
1 L" d# L2 o; T" aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: l# ]. Z" `0 jset global-reputation-list (replace-item j global-reputation-list new)2 K+ l( a& k& s6 }
set j (j + 1)3 H9 ]0 I7 g; T6 z  v  T
]" l$ d. R; b1 V0 I
end9 {+ K7 t# ]' G8 d7 J0 i. t2 e
4 S/ Z; a' K. F, `( j

2 r5 O3 H& |  ^* \5 t9 L2 w) f5 h; @6 S+ f7 ]
to get-color  O/ j. d% d# C8 e0 U
. U* Q7 s# \1 f- r1 N
set color blue

, b% X& u% n3 Kend
3 Q) Z2 ~8 h2 G# `! ]1 c
- m+ `; A) V: ?9 Jto poll-class
0 Z7 j: u6 }2 Mend
6 A/ R% D* V; l6 S4 C- |1 E" q; z; _- h( ^2 Q. W& [
to setup-plot1
& t9 c$ N  F% C! j4 v+ e, d
+ ~8 t+ m3 q% [4 v. H0 C* L3 oset-current-plot "Trends-of-Local-reputation"
5 b7 _( c( y( Z, g
' b. D; ]% k4 y6 A
set-plot-x-range 0 xmax

5 B" U) i. X0 A% Q% j/ [/ G6 d7 Y7 l  J
set-plot-y-range 0.0 ymax
0 t2 e; ]! n5 ^1 J$ ?
end
: a  D  d9 i4 o4 i
/ f, A2 m" G$ a% i* P+ Uto setup-plot2
# ]5 b# `8 W& ]4 S$ t, g! b% g3 s, j: ]4 z7 ]4 H
set-current-plot "Trends-of-global-reputation"
. [. Y1 M- G( _# ?6 `. o
/ C0 a2 f0 A  O1 N5 A/ y2 i% `/ ?
set-plot-x-range 0 xmax

# N+ K7 o$ w: G" G( H/ {& ^
% i6 Y2 S0 ~; b% c: H1 m0 k$ T: c/ pset-plot-y-range 0.0 ymax
8 v6 l9 e/ C2 ~1 A
end+ x! x) C) R* R$ r

. e& D: V' g- p4 d4 i2 Y: zto setup-plot3
+ q2 }& O  m! h- m, B/ x: Q3 _6 _) W2 W  y7 s8 x! w
set-current-plot "Trends-of-credibility"
0 u+ q1 z4 O2 z- O% R/ _+ S
' z+ s) w2 v1 ]. A. M
set-plot-x-range 0 xmax

7 P. |0 u* W( e- D  J/ x* y' i+ u5 f: c6 b3 V7 P9 Z
set-plot-y-range 0.0 ymax
1 C5 i% s2 m( ~1 j
end
4 m6 X( H; {# [. E/ o$ `& \7 d9 v. z, V3 O
to do-plots  _* M/ A1 @/ K4 T  d4 b4 x2 x& j
set-current-plot "Trends-of-Local-reputation"
" V' m8 G* }9 i& U% W5 t6 \, T$ F& \set-current-plot-pen "Honest service": W% i5 ]: \5 S# C* A- f/ z9 }
end
/ |2 f& `+ `- d$ S. d1 d6 y$ T1 v8 b
[ 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.
: ~& R. c. H; |0 K: \6 K0 {; V- p' `0 }: P7 Y9 K! E* j% t* i, G
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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