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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:
5 Y, K; ~; W4 D& y# \to do-business
: F( v) U: q) a4 }+ b rt random 360
3 i' N+ b  Z- _ fd 12 j2 n0 c- |7 X* A
ifelse(other turtles-here != nobody)[, J* I' P( Q' k
   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.& B8 w0 c& \7 A2 y9 T& q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( d( a0 m6 \* l' ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 N: y1 U- o; _/ A* H8 d7 ^. l
   set [trade-record-one-len] of self length [trade-record-one] of self2 B6 T! s1 Q' ]1 J
   set trade-record-current( list (timer) (random money-upper-limit))
) F. h+ L6 t! u6 A4 y* j' Y* I* r: R  `
问题的提示如下:! x$ {# X: A  ]. M9 O+ B

& M! k0 ~9 Y3 g! Herror while turtle 50 running OF in procedure DO-BUSINESS6 k  `& [+ P) P( [0 V9 n. D
  called by procedure GO
6 d, O5 @& R" c' W/ }OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  W2 y; W% e8 u+ w: R0 m
(halted running of go)4 S6 T9 d! M5 @, }9 l) }

. X( C; j6 i% g2 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~~
7 ?6 N# s& L" e' P! ^) Z- N0 {5 t4 @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
! C' l1 j8 u9 J0 A4 d9 j8 V+ jglobals[. r: {1 Y8 P8 }1 R
xmax5 I6 C) i' a+ ~: [
ymax
( k4 n7 ]3 E) c! B$ }/ _global-reputation-list* n5 e3 e6 f( z; ?) L; q
9 @4 g3 o) j  E9 S9 @
;;
每一个turtle的全局声誉都存在此LIST
, L4 V$ G7 ?: }credibility-list
2 d! B6 X7 `3 c& z;;
每一个turtle的评价可信度; {' O" O  ~0 J9 ?' H
honest-service& B3 k8 S- h% V5 D9 p, g+ V
unhonest-service
# h2 ^& A- t, c3 Coscillation
7 V( |/ J# v) Jrand-dynamic
( c) l. Q) _2 F( }]: ]# N" G9 v$ C* e, j$ [' I9 ?/ s

) L& u0 L: A6 S3 Q$ `, b) Hturtles-own[9 q" t+ c4 d8 _3 H9 v1 j
trade-record-all" [& g8 i+ r, w. h4 i# E# T
;;a list of lists,
trade-record-one组成0 l  G# |7 B2 K: g1 `
trade-record-one+ ?4 q. L' }5 |7 W+ X0 ]; r, @8 @
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, x& R. W4 e0 @  y* Y& V
# L- r0 p$ J3 P8 u7 \  U2 `;;[
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]]
. `3 j$ A3 Y7 X/ D- u8 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]" Q4 ]; `+ l; {# _
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list9 M1 y. _2 L; V% H
neighbor-total
, ~: Y$ P5 O# Y+ ~# r3 a;;
记录该turtle的邻居节点的数目# G) Z- c3 q) m; g: _! t
trade-time
( D8 @* r6 C( j4 u0 P" x' A% T6 S$ z;;
当前发生交易的turtle的交易时间
: e' l  C' q1 ]8 ^9 A! A; dappraise-give
8 x$ v$ K% O8 t+ B! l;;
当前发生交易时给出的评价* _, x4 L/ r) g0 X
appraise-receive; b, S9 z2 p; D! G! F
;;
当前发生交易时收到的评价$ u, D- N8 q" x3 O9 n
appraise-time
" i7 W2 t) w3 H2 \' V/ n( |;;
当前发生交易时的评价时间3 ~0 t; i! f$ T9 g+ t' p8 i4 D/ s
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  G) G' ?  {" }  ]: F
trade-times-total
% U7 ~4 q  D* x1 H: R) v' W5 s9 ];;
与当前turtle的交易总次数
2 [$ k2 h" O2 S- U: b- d% p% `2 Ytrade-money-total
9 B! Y3 q" G* q. t4 _% J;;
与当前turtle的交易总金额
+ \+ _6 o9 M5 hlocal-reputation
7 n. Z: H) f# }. Oglobal-reputation
4 Z+ F2 @, |# `# Vcredibility
1 \8 o* }' n! O;;
评价可信度,每次交易后都需要更新
8 J+ V/ H4 j! I1 H: T* icredibility-all
- i) y; N1 }: W;;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
, a* i3 @/ \+ y8 S9 u8 D* s5 `: ^& D
;;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
0 Z4 L$ r4 L8 k( X) }credibility-one/ Z/ ?4 I$ a( b! E8 I. L& L& T
;;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people4 }/ L1 a6 J5 R. Z; C' s) g
global-proportion
: Q) ~7 F6 Z1 h0 q8 `! Rcustomer
% R7 `8 _9 z4 a- W' j: n  jcustomer-no
9 ~9 t7 H5 c; U1 t3 w8 Xtrust-ok
6 P+ ~1 Z" G# I% i3 Rtrade-record-one-len;;trade-record-one的长度0 Q1 j7 X8 w; T* g$ z% z7 N
]* ~' W/ C9 G5 `

+ T1 s7 Z: U/ [9 N8 q;;setup procedure
& N) {7 n5 p) T7 ]5 H9 o  z/ b* ?. [- D" O& V
to setup
( o# _- f0 b; K4 l' s8 P3 k% I# s. w+ S$ F( }- I9 b
ca

0 e$ C' H' y; G  h: B2 W/ ~; F; k/ h9 a- `5 @
initialize-settings
5 ?7 Q$ \) a6 e$ Z9 e! `, @

- @2 N; c, j" Q/ qcrt people [setup-turtles]
9 C+ S1 }* _1 a
8 W0 g8 k0 ~& x) b" _" k
reset-timer

# X0 ~' j% n& Y8 e* q. m* U- l0 }; e4 P( s: B7 a4 J( L
poll-class
6 h2 e, c4 B1 j7 I$ b( a) x% g
% g7 V: ?, a1 r8 e
setup-plots
, g4 l8 f/ V% L' N0 o0 ^5 Q

/ j2 J" o1 m0 H/ \$ Odo-plots
8 l  B$ V! g8 T$ q" q8 p3 G* |( m
end
  _% x6 t9 G4 C% y5 G3 z) m
, f' v( F/ r8 T& m* z; W- xto initialize-settings
* @# C- F7 M7 [, D. k& C4 ]" B, {! }, G$ X  |* O1 B- L
set global-reputation-list []

7 t0 h0 W2 d- q' C' @
) ?. I6 |0 }' V! b8 fset credibility-list n-values people [0.5]

1 J' J. O  v, V  X
+ y0 E! I7 d( G( Z% fset honest-service 0
. k9 G! l8 r/ T: h9 V0 W- W0 j
! f4 y  P* p* s% E
set unhonest-service 0
( `7 o) |1 c  A1 k5 h
: W9 c- x, E0 b7 K1 O
set oscillation 0
/ {5 f3 y5 Z) {  l7 o4 H/ h7 O

& x8 U; Z5 o: ?/ e1 gset rand-dynamic 0

% e  J! K( a# a" Bend
$ @0 W6 J% p4 s
; S& \7 W8 L# d, X( |to setup-turtles
  _& ^& T5 X! M+ \set shape "person"
3 I# @+ k/ V8 b  I4 @# @setxy random-xcor random-ycor. r) \; l( a: p3 b
set trade-record-one []
' Y2 M  H, I5 P# r# {! }
; Z% S* B/ \' z1 x
set trade-record-all n-values people [(list (? + 1) 0 0)]
: O0 r, S3 m" K$ s
0 I. r6 b" a& K( n/ e+ ^7 A
set trade-record-current []5 ~: V; ]. Y2 s. W
set credibility-receive []
* z6 r4 e+ N; j7 j" ]& hset local-reputation 0.5
0 L# E  }3 V" n2 ~set neighbor-total 04 S% K2 }! f" s( ]+ l
set trade-times-total 0
9 i; {2 {/ ~9 R2 f- Zset trade-money-total 0
+ D; p2 S! |5 A5 h, S4 Gset customer nobody1 A( t! Y# L4 N  V
set credibility-all n-values people [creat-credibility]' ?, b3 P: i# L: V( Z
set credibility n-values people [-1]4 U: I; D+ R/ J2 x. r% \# ^6 N) d
get-color
8 S7 S/ e4 |9 J/ M

6 z7 \. x8 ~1 mend; Z5 W7 s1 o* Y( L* j
# j% Q0 R1 |/ N
to-report creat-credibility
$ [0 c6 |' t5 X3 |report n-values people [0.5]2 P8 v6 \' O/ W: W
end
! M7 m& |: U& J5 R+ q- k
: Q' t- U  z+ ]) ?- R4 s7 N: Rto setup-plots; z9 G; a' ^) C% A( f8 f& @! [0 D

0 O' x. k! U0 b$ K4 u9 fset xmax 30
2 y. _) X' K! |" i! P2 O
' h4 h2 ^$ d. V- \. r, j) d
set ymax 1.0

0 F! w% t, ^$ R, n/ p) R
; u# t; }8 t" l3 Sclear-all-plots

4 ]8 }: C1 e, H; i
. [& C' C' Q* p& bsetup-plot1

4 @: ~, \- N( M/ O. K# p9 A6 F  D# X# n$ C) \" F' `% g
setup-plot2
& O2 x# S$ A- Y3 }" y2 W

* |0 j: f' }, {# I# J0 tsetup-plot3

$ K0 w! P4 R4 V" ~% d5 Y8 o/ I% n4 lend9 h' ~/ Z) _. ]* p) r1 A: j. N! n1 r

& n0 |& B/ P- ?1 f- @3 B  O: u;;run time procedures3 a8 Q# x2 L: g% I( V5 m

7 ?; X% I+ C% z7 [to go
4 T( K$ \2 ?" [1 U  V0 p6 c0 j0 z8 n+ D
ask turtles [do-business]
$ u" {8 h  |5 ?* \0 o0 w
end; C$ k& {/ w8 s# X; F# @

5 m3 x. j1 O: M1 p, n1 hto do-business 2 R: T# b8 T/ |
/ J; _' h* k7 m  v- k/ D8 C

( Q4 H" W+ a; _; b4 e: Z9 lrt random 360
; Z0 P7 p1 Z2 \7 G+ Z& X
& C5 h3 M1 ?; ^4 s
fd 1
6 m7 k8 U/ d  G4 s9 z4 n* Y! D
- p- N/ I/ S$ Q3 S5 y( Q
ifelse(other turtles-here != nobody)[
, |% f& Z0 v3 g7 t2 g% P8 A9 P. i

" @$ [4 y3 B  U. k* O+ Bset customer one-of other turtles-here
" b) _, e2 O7 Q4 E' ~' l

' l& C) n( I2 V8 w, M, m;; set [customer] of customer myself

7 v- }( K! K9 Y/ A' v. w
$ U/ C5 H! o+ q4 {1 w* o8 M# Eset [trade-record-one] of self item (([who] of customer) - 1)' ?2 K' I( E0 j% ]9 {
[trade-record-all]of self
; r; Y$ Q& c1 X* N;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% q! `' ]; r6 \5 `

" Z$ P8 {% B' g' S! t" ^/ P! l1 V8 G' Xset [trade-record-one] of customer item (([who] of self) - 1)
* Z/ w, X: G0 s6 g9 a& j[trade-record-all]of customer
- V! w  P8 n, {( O/ W5 u

- F; T) I0 d) m! i( Rset [trade-record-one-len] of self length [trade-record-one] of self

4 y* p' n, n+ y4 o0 O$ O/ `+ d9 C2 E8 w& W7 D0 X4 F
set trade-record-current( list (timer) (random money-upper-limit))
' p% T+ `7 _# \6 ?$ x7 p( I
. o  h7 }4 I% I
ask self [do-trust]
; v( `) C  {. f& A3 q0 V9 l;;
先求ij的信任度
- v' ?8 y% N) [7 c: W* n( A6 W. K( ]* ~
if ([trust-ok] of self)
+ Z) F" c2 \1 F3 ^4 L;;
根据ij的信任度来决定是否与j进行交易[
9 E, c0 N1 w. Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! @6 I0 D$ F3 N9 t. l5 @( H, D' S/ f( t0 F
[

( |+ c/ l  l5 w) B  n9 R$ v: i  L- x7 r
do-trade
5 w  i+ E- `1 s' u6 A; E
: S  ?4 O$ e: T6 ]; B& \
update-credibility-ijl
  s; t3 ~+ K6 k. N) J+ g

9 C: W$ G9 w+ C9 u/ {" V" ~update-credibility-list" L# u5 d" T$ B% [* @
6 k1 E8 d! k; `, r' l

) I+ F4 y% S/ l9 W" Tupdate-global-reputation-list

6 a8 |% R! _$ `8 v: n/ K
2 U$ o8 l2 O6 e& |* f  Bpoll-class

. R  E( i& q! ?) R5 b. s& k% V  p7 ?2 {/ x. {4 _8 @3 v4 ]1 G
get-color
3 g: i% [0 p% B; G" m

2 }8 b$ W" M9 ~0 G( @1 Q: A0 A% w]]5 u7 q0 f9 _* C& x9 Y- h# m! ~

% r% p! w$ X# ~# t4 M$ }3 B. j;;
如果所得的信任度满足条件,则进行交易
/ l1 _5 B5 U' Z* \/ ~7 [* S
! S# q, T. R3 \$ ?5 m* U% a; A  Y- H[
* F$ ]# D$ \& @% D
( V6 B- {( i* [- F  A
rt random 360
& ]+ u/ J$ B! P& S

& p# G% |- `7 f6 j' x0 pfd 1

; Y+ F4 R9 p) s* m4 O' ?
& Y& f$ L3 _3 L4 r% o% W5 Y5 V]
2 ], r( ~4 H1 s+ q. n8 J

6 g* F. g, h6 X: H. ~end
, L- _, j" w! ^1 [

1 m5 @$ m! f0 q7 L( t! u& |7 P0 Gto do-trust 9 ]8 _& o9 d3 V1 A5 ?
set trust-ok False
, w: o& p( c2 c# c' a- I
/ I  z. [; D! j. G0 f) {- k1 q: W

. ]$ k4 Z- u, hlet max-trade-times 00 A% G: F9 S* B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 ^& g0 q) p* y5 D7 Q8 T7 K( T
let max-trade-money 0! O; p3 \- ~; X4 t. v# x. A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ K; a9 u+ E1 f0 m! q; m% y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ @' {5 B: ?% I% Z

) J9 a9 k- [6 [2 Q& c* }4 \; v7 `

7 ?$ _; Y  P. z0 x3 i2 D1 hget-global-proportion8 l: R; R" o1 O& n: ?, X
let trust-value6 n! Q: h5 F( z& [* h! A5 C
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 V& |: u/ N, M4 a! Oif(trust-value > trade-trust-value)$ R: [1 e; i. O: D+ J5 s4 }& f
[set trust-ok true]
" M  u& s' n$ j* w. \3 `end9 y1 h3 n/ j' o. e

7 ^* c7 f$ C# |4 `1 g) [8 s7 Gto get-global-proportion
+ X* ^0 J' i. S/ Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# u2 X3 p3 x- S+ M( f- N8 t) \$ o[set global-proportion 0]
" L9 P1 c, V# ~/ }% c[let i 0
+ d, o5 ~  o* k5 zlet sum-money 09 c6 {) T6 {* _" d9 e  _
while[ i < people]
9 n/ F( e6 }' F+ W) c[
; c' c; S# V$ y5 @if( length (item i
9 J' z- n8 [5 a% P8 }3 h[trade-record-all] of customer) > 3 )
* H4 E6 _* Y* Z" X" L+ q
[. t+ W6 Z* I1 t0 G) [% p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 l1 Q$ T6 B0 h3 R2 e) x]
) o6 ~, t. a. m4 X6 S$ z, R]3 e! m  K9 t; U7 O
let j 0
% u! g* F- T: l4 v1 X& U7 x. k% K% Tlet note 0
% X; Y. g  d1 y: p4 h# vwhile[ j < people]
; g8 T; r6 Q( k[
8 r; }( V# v1 L( e" Aif( length (item i. n- A, A/ @0 M- |6 _+ V; w2 Z& E
[trade-record-all] of customer) > 3 )
" T3 l- J/ z3 l- I; `: l8 j( a
[! I: Z$ i' b' \: z1 o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) m, ?- |8 u* x9 d& [4 K
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 D& z9 J; ]4 i# K[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% }+ K& u' b9 k* u, n# I5 |3 F
]
, ]3 F( X* V' F  z2 ~& q' ?  E]2 S8 s. z( T) `# Q$ l, `
set global-proportion note
2 S+ S" M" W; N8 g, a3 R% m/ O3 @3 X]& Z" a* z* [8 b1 K
end
; h* Y- R% P+ M! N
: P1 a* e' D3 E; X! eto do-trade
2 ~; c& f: u2 T, S: z;;
这个过程实际上是给双方作出评价的过程
) t( S% I" w$ Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 p2 x0 E; ]8 \  [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- x6 N' ^: _) y: N9 }1 J) ]7 fset trade-record-current lput(timer) trade-record-current
# O2 i3 ~! f/ G9 l;;
评价时间
5 E& e- f  L- V3 c/ ?8 i0 x! Gask myself [
6 j5 t" u9 F) M+ Xupdate-local-reputation
. m1 A( @% _6 \5 f+ jset trade-record-current lput([local-reputation] of myself) trade-record-current3 H2 }. m8 c( i+ L/ ], _0 N/ u
]
) ^4 [) _; K% L  nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; f) y3 y1 g' F/ p& b8 T/ E. J
;;
将此次交易的记录加入到trade-record-one
. B% r: f2 K: G6 D( j% cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) {, u3 F; _, c; {- ^8 f; Jlet note (item 2 trade-record-current ), [* H' j2 I" f' O
set trade-record-current/ Q( i* H3 R3 u, K3 _  _
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ m# H% J0 R) k( U% m
set trade-record-current6 S! e$ b5 M! l5 @
(replace-item 3 trade-record-current note); T' d; T' t( ~/ I+ O

$ W' ?) n9 V  S+ l( q" Y

' Z. ]  I9 b$ W8 w- g. nask customer [
! `0 h5 l5 T% X% x8 p5 ]update-local-reputation
6 {  ?/ G; h) ]* k, u# vset trade-record-current
& `; r0 l5 H7 j" Q  q' v: R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ d( N' Q9 u" o& W/ C% w  J5 J]/ M: E# m" Q+ e$ }  i! `

, Y3 F3 i9 D' G, q7 w
3 X" F9 j% ?! j
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 b" ?! S4 J" ~8 F" K
4 m+ {- b1 x8 Q- p
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" v! T' \8 T! }9 x, D+ i/ _. G;;
将此次交易的记录加入到customertrade-record-all: X  ?) T1 e# r4 X
end: |4 x# F, `* }7 i5 `
; P7 h2 ~0 b& [/ o
to update-local-reputation( Z  {) ]+ K& ~5 u  |* t
set [trade-record-one-len] of myself length [trade-record-one] of myself- h8 p! B6 Z8 U/ z4 \! t' K# ^

% ^/ d3 u# W  g# `; ~* v
; |! r2 B4 i( |* o0 {;;if [trade-record-one-len] of myself > 3

) R% K( Q& l! t% m! k- Zupdate-neighbor-total
: e2 {! a* o0 r# A( s/ q3 g' j5 K;;
更新邻居节点的数目,在此进行! P7 P1 g0 }; M
let i 3% N( @1 b/ U- @4 M5 F7 S* B
let sum-time 0& D' H" h) ]) @
while[i < [trade-record-one-len] of myself]; @' i5 j' L# r$ a5 v4 ?0 h' R
[1 H4 V: A6 T% S* N7 `/ B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 i1 K# x- }& o" E& j/ Q& Kset i4 o, ^! Z6 u  W
( i + 1)
& Y, n, T7 R- P) x+ s
]
0 S6 L9 J1 F0 _9 p7 H3 S5 i4 jlet j 3! ?( B0 x* x+ v& Z
let sum-money 00 F9 v# i1 R4 v. g- P8 i4 L3 p% z
while[j < [trade-record-one-len] of myself]
- S2 r, S3 V; u3 O5 b[: f" _! Q0 f# c3 I3 p* D% Y
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)
. x3 [  L0 B, F6 n- p5 yset j
1 F/ y: g# y- F. a% e( j + 1)
( U: h4 V; M  p3 o2 Y2 g+ w& [
]3 i; d4 j9 J) w% Z  Q" R# J
let k 3
+ A: g) }! ^" T( j2 |+ xlet power 0
+ k3 Q: v2 u' `% `let local 0
$ G  L( {7 J. ~; a5 d7 U& Rwhile [k <[trade-record-one-len] of myself]
. f1 [3 p& T$ U' W[
( m9 I2 s1 O! e3 Rset 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) 7 K4 n* M+ l" [
set k (k + 1)4 p" S! x/ P' }; G! ^: _
]
: H# f' Z- O; Xset [local-reputation] of myself (local)
5 M' B( R+ l- yend
# ?3 C/ s( o' S" e* A. M" D! n+ a1 J/ H8 x! J' c# C; n$ x
to update-neighbor-total
& s' M0 ~" Y0 D+ {3 U# F" ?) X6 f  ~8 Z) L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 n8 c& @0 h$ O* I' [' D9 V  d0 `  v8 Q- u2 L0 w6 l- u# E/ A+ J
0 a% N8 }( X' ]% `8 i
end; l5 i: k2 h. y# p

0 y) Q2 Z: u# v+ }: J% {to update-credibility-ijl
& \- s$ k+ l5 {/ d" t0 w" \+ J6 N8 N5 n& i) [- E' w6 |
;;
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。2 k3 W9 Q1 h! w9 X1 i4 B5 y
let l 0& k# ]+ y, p6 `# {
while[ l < people ]  u  C3 f% Z, k. ~4 x
;;
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0 D4 t4 v4 _1 u6 }
[
. P: S3 H+ S0 D, O; Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) t( U2 X, E# @& F
if (trade-record-one-j-l-len > 3)7 C; J; R- y' Y0 }
[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
& P, O& {, _0 k6 y) Q5 K! Plet i 31 U) q8 M7 a* l. e) r- W9 j4 o
let sum-time 0
" A. S5 j9 B" l7 hwhile[i < trade-record-one-len]- y, r" ?, \9 U! d  j
[
* o# D( \' ]- o: B9 ?) Gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 r' L. ~/ d3 q* `% H
set i
# H$ Y* r7 T0 ]0 f( i + 1)
2 n4 m' p& d6 `
]7 k% X" ?  X  Y! A  G5 h: w
let credibility-i-j-l 0" u4 Q" v5 y: j' o. v  x
;;i
评价(jjl的评价)0 D0 Q1 w/ L' @" x2 f6 A
let j 3
3 T$ R: D. \1 Q( Tlet k 4
% d$ P3 Y1 [' o- E' W2 k( L7 g9 twhile[j < trade-record-one-len]$ J- _( N2 X+ I3 M; L' V& I0 s
[+ F3 r+ t  Z+ y0 f  e
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
" b: E6 F" Z, v5 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)9 K- Z# `0 O, q: a
set j4 S$ T( E& A& Y' e
( j + 1)
8 u5 T2 U3 L2 t! O$ I
]
* s( \; ^  [( F1 X: @: s6 ?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 ))/ V" ~- C1 A) n& i

8 r; J. b2 M! v4 R% V" o0 \4 x8 e

% Z$ C) h( B. u: |6 g# U! Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 ?0 N+ T, }+ c6 K& };;
及时更新il的评价质量的评价
6 c1 G+ u9 x7 A) g  Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# c; r4 N! {) o! T4 o
set l (l + 1)
- }5 J8 u6 D' T6 b& g2 W7 ^# ?]
( G5 V" T& N/ qend4 P9 O4 l. D1 O0 H/ U
# j! S! Y) X4 l# \4 D6 z+ v& H
to update-credibility-list: H' S( g- g; ~+ j7 g
let i 0
/ \$ R: f6 ^7 S- z- E% nwhile[i < people]
! A  b" j  ?. \8 J& `" r  w[
9 R7 _* a0 I% V7 elet j 0* d( j# Q; R  {* e9 S3 f
let note 08 g  K0 T: [* u3 j
let k 0
- M/ E* ]- C2 R( K0 Z+ C6 e: T( B* D;;
计作出过评价的邻居节点的数目4 ~; H$ \: |, S- a/ h% H
while[j < people]
$ G% s9 t4 A% y  C# S" t[
0 \3 @  l/ }1 Y/ h" \4 [4 `if (item j( [credibility] of turtle (i + 1)) != -1)
+ @; j  A; a' B1 Y0 U- H5 j;;
判断是否给本turtle的评价质量做出过评价的节点, @) M+ `4 k: @' G& Z7 E) p
[set note (note + item j ([credibility]of turtle (i + 1))): G3 Z# E/ g6 M' |& |
;;*(exp (-(people - 2)))/(people - 2))]
. I' l& k$ g4 G- X7 U
set k (k + 1)! m& b' M' ^) M
]# W* k% t- n# l& y9 d
set j (j + 1)
% N( B+ g/ _* l* F- ^( D/ l5 U]
1 r6 c% x3 A% q0 j8 c0 A: s" yset note (note *(exp (- (1 / k)))/ k)
2 T; o/ I5 h8 u# ], D+ K2 h) Xset credibility-list (replace-item i credibility-list note). t# Y  f; J, e! ]" \3 q" N* i
set i (i + 1)
% E/ ?9 o- ^7 x! w" t9 W]& D, ~9 l) O5 M" e. r) v
end
" d# }- D6 g- M4 m" O9 J, R: C/ t: l, s7 A5 Z
to update-global-reputation-list
* p' o, d+ T! z- S/ Tlet j 0
& O) F5 q: k: ewhile[j < people]9 w+ J9 B0 [1 ~: Y* l' R- U, q: r
[
3 U6 x! S5 q: `3 O/ Clet new 0
3 F7 }) x$ |) [! F9 t( r;;
暂存新的一个全局声誉
8 X+ {, y1 D0 m+ _% q* O, Zlet i 0
) ^: o1 s3 R0 y6 ulet sum-money 0
+ J* |$ s$ t9 ~let credibility-money 0! I9 A/ N5 e  M: p, u( }
while [i < people]
8 O( W/ T1 A" U[/ J2 V, c% V' D8 f$ y, R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ S- e7 c1 c- Y0 c* M
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; A# `3 u. r7 `% @set i (i + 1)( h# z1 C5 u! F# c1 V6 J
]) u3 ^7 {, F2 K: l
let k 0
( Q1 j% c3 V) A- vlet new1 0
+ `; V7 x: |2 y' ewhile [k < people]0 D7 P; s& b" K0 c: P' c
[
7 o6 ]8 T; j7 O' \4 zset 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)! W# y6 v! U5 a, Z7 e2 j& g
set k (k + 1)9 T+ _" w# R: b, l) B
]
4 `8 L% f# x; w" e$ {; Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ g+ j8 ^; ]9 y' Vset global-reputation-list (replace-item j global-reputation-list new)% L9 S3 y+ j/ {1 ^1 E
set j (j + 1)( u0 V( i+ @0 e, W% x6 f. o
]
" I& |7 @: Q% z8 c! D+ hend6 P( L; s4 e/ I2 F
3 k/ H, W  i" Y( l5 m# b& ^

" `0 K4 |5 B$ U( q7 T- M4 o8 h; d$ N" o1 {8 j5 Y' f
to get-color" M! [" f( w) L8 a4 _( u! ?( e
5 G! K, x* b( Y0 |# }
set color blue
1 r; _9 b6 `4 v# X: \" s8 I
end. |! c# ]5 {# R: l: t8 s6 T
; b& Z9 @  z: U' O
to poll-class
: Z8 v4 ]$ a1 P/ {7 O% Pend
1 L/ R; X- R7 l7 ]$ E8 |. |* j, z; f; _, N
to setup-plot1
9 z1 \+ B+ N  n  ^4 b! l/ @3 t- G& N5 f6 s( n! ^
set-current-plot "Trends-of-Local-reputation"
3 I" v. k* q4 s3 g+ S* S6 G! a! H

) P! B" u% S: U* Iset-plot-x-range 0 xmax

, a' M) ?& ^# [# _  X" l2 [. O6 W# T6 ]" A& i8 S# p( s
set-plot-y-range 0.0 ymax

5 U+ Y5 D6 A- Z8 P1 _end
3 l. W7 N. v! {+ y# }0 ~
5 V% a% r4 O3 G) ^to setup-plot2
- {1 _- X4 F$ ?" p  H- G, _& h5 i8 A2 `9 P6 m
set-current-plot "Trends-of-global-reputation"

, H  G) P0 J  w
7 H! s7 V* S( J7 }' pset-plot-x-range 0 xmax
1 ~# G3 m; t7 W2 w  g- K( d
/ K  Z! V& B# Q# L
set-plot-y-range 0.0 ymax

5 A& w5 d" Z- ?3 J7 k+ Eend
7 {7 V; y3 U0 S; m& c7 t: e1 V, o& c  D+ L7 R2 `" h+ M2 g- s$ j
to setup-plot3$ V8 M2 C4 d* `4 ^6 e# j# d
! X; ^! `6 D  U7 K* I5 m# D6 {4 ]
set-current-plot "Trends-of-credibility"

. Y2 l" f- ?! C, `0 O, C" j
& S9 O* k6 i4 s/ v" Zset-plot-x-range 0 xmax
. q4 P3 u' K: s) H: J

$ A/ M- D1 z: t! w& eset-plot-y-range 0.0 ymax

6 F/ W+ z$ E7 K; Dend
1 ~8 r, [1 R: |) X1 H6 G6 q: z* A4 l0 R
to do-plots5 C' d1 E0 }2 ~
set-current-plot "Trends-of-Local-reputation"- N% \# |' t  D- c* h8 d: d
set-current-plot-pen "Honest service"
) E2 y) W5 e4 S) wend$ g! k8 E8 z7 t1 J) h

6 l- L. I! s" x$ _% k" O! [[ 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: p. h) R% C# P0 r
& A  }! C9 O3 f; U2 c7 O1 \2 u9 l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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