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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:% w& p$ w; K  e+ g% n4 m
to do-business
# H; m( y& B4 H6 ` rt random 360; M) P& s4 r# [- T- Z
fd 1
. R1 k% Z7 G9 }! L# j: a ifelse(other turtles-here != nobody)[/ `1 X) m+ I# A
   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 b1 ]  o) v) O7 a% i! z2 A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + v1 E( Y7 D$ `4 l! s6 z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ G! {' J3 I$ e
   set [trade-record-one-len] of self length [trade-record-one] of self
% X1 `- z) K* |7 ^, p   set trade-record-current( list (timer) (random money-upper-limit))
$ q' T! S4 @+ Z2 N
8 [" m4 n4 c; e6 w% l问题的提示如下:8 t3 I! j: e7 h; v- L$ Z
5 v9 E5 c  B  B% O0 K
error while turtle 50 running OF in procedure DO-BUSINESS
$ V+ P8 `) C! d, y; m; {- a  called by procedure GO( V3 m" u' m  o4 \( v  a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 P& c) G! M' z5 |5 I  N
(halted running of go)
8 p. ]2 r! G7 i* W6 N. c/ @# H& P. [+ X& a$ h# |" F5 x
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 Z& Y+ i" h( [3 G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
, g5 O! S% u9 `: A, |$ Cglobals[
4 ?; j# l5 ?' {! @& jxmax3 f0 o+ l" G* F
ymax/ ~  v4 T  @; W* Z  M5 D7 @2 s
global-reputation-list
! I' D- O8 Q1 R+ R* B
& ]2 H. l0 y& [8 m4 R% a;;
每一个turtle的全局声誉都存在此LIST3 [- y8 C+ G. Q& C& ]2 N9 r
credibility-list
& J/ H' e" |! l% E;;
每一个turtle的评价可信度
) r* n4 G& S5 Y, O5 \$ q, T' n) `honest-service; ~, K& V- P. k8 N( @( }& k
unhonest-service; ?1 v5 F$ k8 I
oscillation
% Z' g+ O8 t5 t/ G0 trand-dynamic
8 T1 |# n8 `2 J  E7 C! x9 j# y]( O2 E: C! ^1 W2 ]- B' v
5 v: d& q) m9 r+ v' [' A7 U
turtles-own[* t* w& ?# Z# B
trade-record-all1 o# d0 ^9 G( {! g  `9 w$ u
;;a list of lists,
trade-record-one组成1 _' N3 X& R3 B8 H  b5 X1 m) b
trade-record-one
& D0 ?8 B# d1 }3 x$ H;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" M0 s" U+ c4 @4 T& X& v, e6 W' Y& i' i9 P0 U% [* S. l
;;[
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]]
. M, ?. Y, U$ A  w* [trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
) ^* m5 i0 D+ X) O- \) _2 K/ ycredibility-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
3 w$ I6 @/ Y7 Q' q) {& H* l4 Pneighbor-total
. Z- e3 N% s/ w. D1 e" |0 i$ \! F;;
记录该turtle的邻居节点的数目
- w' O$ V& f1 ktrade-time
/ `$ g+ Y: Q; e+ }3 E7 k;;
当前发生交易的turtle的交易时间
/ Y7 V' C9 `9 F+ B2 @  }appraise-give
. @* B) s: {+ ?0 {# d;;
当前发生交易时给出的评价1 w% E& i% |5 P& h
appraise-receive' q$ ]9 q( T( K$ N' ?4 r
;;
当前发生交易时收到的评价
4 c+ v3 F0 y- k$ p, N& Cappraise-time4 Q# R& ]8 ~0 n8 A" C" ^! n: [
;;
当前发生交易时的评价时间# X6 N0 ^% E" u, r$ Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! r$ g: \3 l2 i5 gtrade-times-total
9 j2 k, R: t- E+ E4 s0 T;;
与当前turtle的交易总次数+ a$ u; e$ J4 Q4 F- [
trade-money-total
0 |, a( v( |8 a;;
与当前turtle的交易总金额
* c# L1 e1 p% l9 |local-reputation8 D9 \& U3 C2 W& ?+ f* p$ l! F
global-reputation! r/ s9 l! N# n  Y' R
credibility( ]. F) ?2 G3 g$ y; A
;;
评价可信度,每次交易后都需要更新3 _9 a3 e5 v0 W( w# l) Z
credibility-all
! f! v& [8 Y" d. q1 j+ a: X- y! ?+ x;;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+ X, u) k6 S! b4 h2 r
! |% r  k# R/ [# z( n
;;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
% v, C6 ?6 y+ R8 Icredibility-one9 b" w% A8 j; ?. C, Y/ r7 g
;;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$ y: i! Z: k) U  |' @9 ?& ?
global-proportion0 k  }0 y8 V8 o+ [' z
customer% _7 T1 f1 ^2 h' ]) z2 ]
customer-no
+ K# V! o$ s5 itrust-ok
$ E  t0 A$ \5 k+ ktrade-record-one-len;;trade-record-one的长度
' H; n  h* J* I% F]
, w; U' p8 N5 n' ~( @3 ^. P! f0 [( |+ ~7 V' n4 Q. [& \' M
;;setup procedure6 D5 ?  m# |8 ?4 j& W' H# h

  b& C, n! Q$ i, r- oto setup
5 Z, t  q1 E3 J0 f: \, f& x: N2 y: \2 M, y, z# q. ]
ca
" Y/ A3 ^2 s0 B  e0 s0 D/ M# w
. T; y4 D  n0 d/ ?( |4 S9 ^3 _
initialize-settings
, J+ [+ S& ?% Z1 V% |
1 m  p$ Q; U7 T* y* j5 }; ^. \( H
crt people [setup-turtles]
; C; T5 T& V+ h

. M  W9 S1 Q. A! ireset-timer
' Q7 R. f! i8 h3 u- u0 R
7 m0 e( G/ Y/ L# K% p1 L0 a
poll-class
' }; A6 w6 i6 ^1 D1 U- N
# M, ~) h+ ?4 W0 s
setup-plots
4 n3 E0 ^' N/ i2 l9 t; i

6 o, k* W+ f+ Zdo-plots
; m. G0 _! D' `. O( U  _0 B( G
end) S% N: W1 r7 M8 _; q0 d) Z0 x
0 N' g' D5 K6 V4 q
to initialize-settings" o. Y" e; y! P5 h1 {
' K5 l; R, S: e3 [
set global-reputation-list []
( m7 |; S) z$ d8 v9 o" F3 P( R

! Z" r" @& G% n3 O9 m1 C0 Y4 mset credibility-list n-values people [0.5]
& C4 U; H- _3 r! _9 [1 C/ H3 S
' C. Q6 l1 J8 d' s8 W
set honest-service 0

9 E( n$ g3 g4 w6 A5 O3 ]1 H+ j# P4 R* u. A& W" w( Y
set unhonest-service 0
( ~8 S0 I" b$ n- p% t, e/ F+ m

  P, ?; u5 T! K* B: _& Jset oscillation 0
% K; x/ ?7 g+ b0 m
# N& v* t7 r6 S2 y
set rand-dynamic 0
3 m* e( w$ y& y! Z
end0 \) G3 Q) Y& {8 M: z4 E
0 f7 k( N4 j+ {2 H/ ^3 v1 ]
to setup-turtles
* [  P7 n- S" g6 Aset shape "person"# T7 h( p- D9 F& o! w
setxy random-xcor random-ycor$ i! ]& w/ t! p
set trade-record-one []2 W6 e5 _4 F( m
6 v" t% p, Y' g+ {
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 p5 [  A/ R3 A4 J8 k, ^
* F9 o5 _# n0 ^3 X' j  l& r, \
set trade-record-current []9 v# X6 Z. v' I7 p1 W+ }9 g
set credibility-receive []
, {3 j) A% f) {* Lset local-reputation 0.5+ n" c, V7 x( U: C' j
set neighbor-total 0; m: x. x5 V5 R) z1 I5 G
set trade-times-total 07 C6 n. }& c* x
set trade-money-total 0
4 G9 p: @% C# H3 p0 b  Jset customer nobody+ V3 r, Q8 f1 q6 H1 \$ C! t
set credibility-all n-values people [creat-credibility]1 B! ]4 w9 i8 u) I- ]
set credibility n-values people [-1]" Y9 s; z4 h  J
get-color3 n! D! u9 ?6 z% u5 p
% Y3 a9 P) G$ g' H
end
5 s* Y! J; I! [. V* c0 P' l- s9 T
to-report creat-credibility
) ?$ R$ H1 j) {) t2 [report n-values people [0.5]7 O6 z3 X0 x4 M6 a$ H# X( b
end7 {8 [. q9 C6 Z. T9 W' k

# W. x: x! m: A5 w# X0 ~5 @to setup-plots2 v: K( ]* Y% i  I
3 W5 L( A: [6 d
set xmax 30

. F7 M' D3 S+ E9 D. H  _5 j6 |" N$ ?/ M1 o; e* \+ ~
set ymax 1.0
  j% g2 I- X5 Z' T# M) C8 I

/ Y0 P2 G0 N8 j' a' z4 o5 vclear-all-plots

* d) U" d6 \4 z' I; J
8 d0 K- Y: L; U* y0 b. vsetup-plot1

4 V. P; t& a) `8 J% L) K( b/ h# E$ n2 {( u( o% A; C% ^
setup-plot2
# e4 O5 l+ s: [6 P* F* d; O. }

  E9 k( u% w& h: isetup-plot3
3 u& T' G7 g  ?9 V
end2 W/ z, ~! G, r) ~# I! x3 E
* Y6 \# {6 b' O1 ^  d
;;run time procedures
, [: Z% ]: y$ T3 j. Z8 w! f$ b( k  j# \* x/ q% n
to go
# X  K9 g, d' {; g, q0 A, u* b8 P( `1 L
ask turtles [do-business]

8 X9 M$ Q, _1 [5 `8 Y3 _6 K. eend
; k* H& e; w4 H. A9 f8 W# P6 o% S6 b( V4 k
to do-business
8 J3 C5 P# o: \; }2 t7 m/ O' G
+ t  Z% N  C0 k. v, f5 Y
7 y& }% m) ]5 Z/ ^. d& u
rt random 360

. d8 c5 T2 D! L, L' J" B
6 p  a. L/ F4 d1 b' Ofd 1

$ W8 |4 i$ t; v5 X
- i) g" ?' @; R# x& t( e" B  difelse(other turtles-here != nobody)[
& |2 B2 F& A* X( k
' d% @8 o7 c% b* t
set customer one-of other turtles-here
$ Q4 Q# K: G8 o9 p9 {- E" _

9 `8 B2 M9 O. |' n5 E6 i;; set [customer] of customer myself
! I8 I1 U8 J/ d, @0 U5 _2 p, o  w
& p& G/ H% I( f: p, n
set [trade-record-one] of self item (([who] of customer) - 1)  q$ S, A( }% w
[trade-record-all]of self- M% l$ i$ ]) Q3 F* ^, ?
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 @" g, q& j4 n; a6 Q4 |# j
( ^" a' t0 R+ X, I' Y* s; I
set [trade-record-one] of customer item (([who] of self) - 1)2 a1 G" c' a7 \2 Q: ?$ V3 S
[trade-record-all]of customer

$ O2 }8 \, _# K! b) `, W0 D
; p) X0 W. i2 b1 z3 }* g4 tset [trade-record-one-len] of self length [trade-record-one] of self

- \$ D4 H: z7 }$ @/ {% L+ _
4 }; F& {. W& P6 Yset trade-record-current( list (timer) (random money-upper-limit))

8 \, q9 U; s$ \3 c* r. k/ X' }7 h3 S" R* D
ask self [do-trust]
* v7 R8 b5 ^) B- x, g" {;;
先求ij的信任度
1 K7 @1 l5 i4 g2 J  ~7 G) i3 F
if ([trust-ok] of self)9 n% [/ m- g1 u) s$ m4 a
;;
根据ij的信任度来决定是否与j进行交易[
* N3 S" d6 t! bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: [/ Q$ |4 u) f; ~. t$ x, y

0 N. W% ?+ ?9 g2 j' c! r[

. a, Y3 J, a4 k/ O0 Y4 L$ G+ v% z- \
do-trade

" ~3 L. {0 K) O, S$ L( {% @% b+ t  W$ f; [) `+ t
update-credibility-ijl
' Q0 u+ P8 L) r

6 X7 C  [7 }7 T9 Gupdate-credibility-list
! F* v& v/ k  o$ \, G. ]
& H- q. ~3 s% s2 w# J1 Y6 r  E
1 |* e8 W3 H0 P2 ^5 M
update-global-reputation-list
, _/ B& k9 J9 k6 o$ O

$ F* K0 A  b2 [poll-class

1 Y' ?) ?4 Y! U4 ?6 G( _- v5 P4 d1 z" e) a  }0 C
get-color

; h- y% B! O: G( a: ^- g+ c1 C5 b% x, j# j& g6 O
]]- q) }* O. ]$ _& `& H7 F
  s: s" A, i' J, c. Y
;;
如果所得的信任度满足条件,则进行交易
" h- G3 R1 }2 c3 r  i/ r. {6 X( `! R
[

+ i4 Q( x0 b# J) p4 l/ o# c) ^6 u! w+ S3 D* o
rt random 360

5 [, z7 J0 ]3 v, d- L" O) \' s; {0 x; E2 V
fd 1

- D5 S7 U  s2 p7 [. S+ f8 E6 O
" {/ C' v2 l: T7 ~( {6 ]]
, G1 E/ j* U2 N- H0 W

; t& ?. f% f& v$ P" s" xend
  e$ \6 b8 b8 \
: l! z, s) t: M$ z: {
to do-trust
( f, ~4 k: `* T! z9 Oset trust-ok False  U5 c9 ~+ \% g& H
* p. G* ^6 |( q7 y/ i

6 Y. Y9 y4 Z# q: |- S& clet max-trade-times 0+ t, _/ y+ W9 q8 J- n% x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 C2 H, W: |5 f" Z- J5 U, qlet max-trade-money 0' s9 x7 {' U5 S' a
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  v$ p* H: K& W' l! |
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 r" M% n3 u/ p; @# v" {! Z6 u! E( Z

* S0 u, X! T# o4 u. s' Uget-global-proportion; s' L" P+ W3 Y7 V
let trust-value/ t% B1 z# }. g( o4 G* X
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)
  F" o' r/ N) I$ n1 V
if(trust-value > trade-trust-value)
+ J7 e  k+ T, C! ]7 J[set trust-ok true]
( v/ n; K& Y# w, f. uend7 b% s) n( G2 \1 |+ M* w

$ k* j3 K& ~7 h, Vto get-global-proportion
# t) d8 w( U3 y- pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 i. R, t, o3 ^5 W- ~& H2 v8 N[set global-proportion 0]
; o" ]) K1 f' u# Z[let i 00 ^, ?6 y& m! m# }; Z
let sum-money 05 b( b+ J0 Z* ^2 J
while[ i < people]. G: F1 ~! T& x
[
! N# T+ X/ ?3 a6 Y8 jif( length (item i
3 c0 {! J1 k4 h# _3 c6 o. y0 T, x[trade-record-all] of customer) > 3 )

7 M4 b# m% c6 l- X1 D[* g8 O* H1 J- w5 p1 h
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ a3 [. s# z( I& Q7 c$ Y
]* W4 k" K: e+ w& Q
]. a2 y$ b, I! F+ d* W2 R, j  x3 k
let j 0
% q4 z0 u3 X8 g# _7 @2 r0 J2 Ilet note 0
3 n7 d* m3 ~8 t' u3 W: D  N0 l0 Nwhile[ j < people]
( ]5 o8 n2 [; a! a$ c$ A; w[( x" d* H  s- L' q) P
if( length (item i
  k' a1 e. r; Z' d1 P, d, y) k[trade-record-all] of customer) > 3 )
* H' g7 K1 h+ Y% C4 T- I& B
[
8 Z' @- T3 v1 ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: _8 o  j& m1 I' n2 l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 Q& O. j! g# N7 X[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 M9 O. C2 B/ A4 s7 x* C
]
$ I( i' X' z- d* ]0 Z8 }% r+ Z]
% Z. D9 E/ u1 {" X9 X- ]set global-proportion note/ d- L0 d' A4 I) Y. a$ Y
]7 a& D1 o+ g" x. W
end
  v2 G5 k, J, m/ j" u
1 ~! i. ~: z7 G, T6 {5 Oto do-trade! F4 }) y5 N! `0 ]6 H0 I
;;
这个过程实际上是给双方作出评价的过程; @. P% M8 r' U4 V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; V+ A) U1 b; [0 T' J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 o! K3 }$ ~4 ?$ P# ^+ B
set trade-record-current lput(timer) trade-record-current& N) v0 r5 e/ @1 h0 ?
;;
评价时间+ C; d6 }& }7 @; ^: |4 M
ask myself [
9 @( r3 t: u% Y  vupdate-local-reputation! V' ]$ D- j  V0 c8 t( r1 {
set trade-record-current lput([local-reputation] of myself) trade-record-current
% ]5 N8 ~' e$ ^' @3 w6 f5 |]
+ |& ^- N0 |. w! n. Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 J. b6 Z' [2 |$ c! G8 K3 P4 g;;
将此次交易的记录加入到trade-record-one7 w$ c6 p, [" {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 @( t+ I; i* e9 a' V& Z
let note (item 2 trade-record-current )9 u5 I, U& F: z& w* _$ A
set trade-record-current
# B& I6 o0 q; T% L, ]4 [/ O7 n/ Y(replace-item 2 trade-record-current (item 3 trade-record-current))
" q" v7 E, p+ y  P: k6 u
set trade-record-current
, H+ v0 q9 R$ H7 P) F(replace-item 3 trade-record-current note)
* D* C: U/ x! b$ z6 c/ ^. O
4 m: _% a- o% p; \5 c# M

+ X% F/ z3 [1 J# Nask customer [* ^) Z3 I7 p+ {7 X8 y7 e. `# Z
update-local-reputation
2 y' ^6 x4 r; C/ c% G1 R9 y$ c2 fset trade-record-current
% ?- i/ p& v; |0 s3 O" D, b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& |7 Q* E1 Y6 m4 z% k]# T% q# K( {8 C3 t' l
! h- G6 Z4 q% X8 E% D- i1 _

3 w4 a- q0 ]+ U* p) O9 ~8 {% Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! _. K4 s9 a& Q: K0 y( l8 ~

* x6 D( r, Z  J& ?set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 y- l5 Y- i. G2 e) Q( };;
将此次交易的记录加入到customertrade-record-all
+ ~1 u6 r) I+ \1 |) V1 _' q+ {end
7 y! ]  z, B0 y# B
" v7 u0 k6 {: f2 }6 d, K2 }% |to update-local-reputation
* d1 R- i1 a1 w4 vset [trade-record-one-len] of myself length [trade-record-one] of myself6 K# \. X8 [+ X

3 Q7 y8 n. o: D8 v1 Z, a, [) w- f* {* M1 \6 |# q% E5 g
;;if [trade-record-one-len] of myself > 3
3 b, W" c7 W0 a; ^# U0 l+ v
update-neighbor-total
* q% o; l( o) r" p;;
更新邻居节点的数目,在此进行) Z7 P. `) m8 A2 e* `# o
let i 38 C! ]( |7 e/ ?, o
let sum-time 0
3 T# v2 m2 a4 E0 W/ o5 Xwhile[i < [trade-record-one-len] of myself]
/ C1 F0 j1 f1 A# P  b  N[
6 ], p4 ~0 q6 [! ]) P5 B2 cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ ~# Z8 g6 k1 Z0 A7 |4 U- Fset i% F6 j$ N9 _, A
( i + 1)

" s" }7 J; R" u+ ?]
+ I# v8 g. {- y; _  dlet j 33 S/ v/ t' S6 p" y1 q0 g, d* l
let sum-money 0
1 v, ~4 k, ~7 n0 |while[j < [trade-record-one-len] of myself]
; G- L- F  M* T6 G, D9 z6 P& v[$ |' c" n* ]0 Y2 [
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 h, A& a& O% n9 B) E9 d6 g5 o, i
set j5 d" ?: b% @* _# B; v. n
( j + 1)

' J+ V6 U* @; g9 C5 n9 x6 I+ F]
. d: |& n; u; Zlet k 3
  M. Y3 O! R7 J* Plet power 0
( h# Y7 g* Y; l$ Z1 }  m0 x0 slet local 0
5 e0 e$ [9 _" v. Z; G/ a/ hwhile [k <[trade-record-one-len] of myself]/ r1 M& ?$ t' W( G- o( @( x9 \
[1 N  Y7 c  ~  O0 D. _% ~
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) % q2 p! F' d6 \7 |. j
set k (k + 1)8 W3 A5 j! I2 N3 g% u) M
]# f- v5 f& ?* ?
set [local-reputation] of myself (local)
5 S6 A6 h" Y. P* [" d* lend
8 l0 l  Q/ E2 |* U1 Y
/ ~( r7 w! y0 f0 Qto update-neighbor-total# b3 @# |* T1 |- |# |

' a3 e: B4 v! S* h$ p1 [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! w* ?4 X/ j$ D: E+ W
+ a5 X  f0 ?, }
8 n* E/ y/ A" `& L
end& e; c! a! O  y8 F  ^

$ V4 i; m! p! k$ L/ h5 a; \5 ^5 _1 b, xto update-credibility-ijl
2 o5 }$ q0 T' Q
* Q+ `, C  m; P; L;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
, \) L& _3 |! M4 D. ]& Mlet l 0. ^. i1 ~7 U* d% }9 {# V  w/ l0 \
while[ l < people ]
+ g8 K- F4 q: `" b+ b0 A;;
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. c/ ]7 T7 ?/ N3 S6 k/ E
[* h0 i2 P  ^# b& M% w* t
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ ~9 n3 u: S) t  o
if (trade-record-one-j-l-len > 3)
3 n" B* u( ]7 h[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
2 V5 s/ y" w- ?3 E. tlet i 3' x3 |7 P( z4 C% u0 c
let sum-time 07 e% s3 x7 ?& W( u3 o
while[i < trade-record-one-len]
; a+ M8 v" t' g[
! P, q% y+ ]  aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, R* z/ ]) z0 S& \set i3 D, W% y) {1 F2 q; J, B
( i + 1)
& D0 K( R: I' ]
]
7 p& @: t# O$ o. O8 Jlet credibility-i-j-l 0
: x9 _7 k: F/ T6 s& p;;i
评价(jjl的评价)
& j- D! P5 i, t: {let j 3  v+ a* [9 ]1 M/ h
let k 4
4 \" x, L. U3 _while[j < trade-record-one-len]4 [9 M$ R& I. C- W3 K. P8 e2 R
[6 b) b: E0 a& b+ ~% S6 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
8 }9 T0 E6 \& U1 Q# b' R8 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)2 o7 M. z3 B" Q7 o
set j
- l8 p. G8 b: c' D2 }/ N( j + 1)

) w* G. c1 a1 W6 h3 H) G]
  R6 Z. z. q. V- |: n& f0 eset [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 ))
" R0 O/ Y. b: m3 V* y: I, N8 v$ {4 }; G2 D
8 i% i- F/ ?: E3 C; X8 H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 Y) }% N! m; l
;;
及时更新il的评价质量的评价
+ y: o6 T; K. A$ M6 v" s, uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' |. d4 y# `' M( Y1 V
set l (l + 1): Q  l& l. a- p! N) |9 T' {
]. S$ A3 j4 {$ \( Z2 j
end* j# ^7 V! E# c# R2 N8 C

' t/ p3 m" Q) ~to update-credibility-list+ H" L: I% E9 B2 o- r2 ?' T
let i 0; O$ W3 z$ `- E
while[i < people], [6 B. v7 F, {) Z+ \2 z! [1 H; O1 ^
[
, L  `4 X: y1 W2 @. w# q2 y) Wlet j 0" S9 S+ k# E- Y+ w5 i
let note 0
. ]4 P; R! k+ ?! T/ L2 Z" O+ z8 V$ Tlet k 0% L  A: m" \1 K8 f3 M' l- G, K
;;
计作出过评价的邻居节点的数目
3 O. G. t, s! A9 B  K% c. h5 ywhile[j < people]$ P. D$ p0 `+ f
[
3 Q) @6 L' P* l9 b  I* Q4 j9 E+ q/ Lif (item j( [credibility] of turtle (i + 1)) != -1)
7 [) v) a! g: v* ~. R;;
判断是否给本turtle的评价质量做出过评价的节点
! }* G' @1 V3 Z' i3 N' Q) U[set note (note + item j ([credibility]of turtle (i + 1)))
& D% \7 v8 ?% k* P3 x  T;;*(exp (-(people - 2)))/(people - 2))]
" U7 D% D' \9 w
set k (k + 1)# J8 K; g1 U+ Q; }8 n+ R
]0 g  ?5 S( p, m( N" ?5 I
set j (j + 1)
  t* x+ }$ i6 }/ S4 \% ]1 P]6 V$ }( K( ?5 e4 {* j+ o: {" I1 Y
set note (note *(exp (- (1 / k)))/ k)7 g! u8 Z6 C$ d$ k$ |5 E# E
set credibility-list (replace-item i credibility-list note). a6 }" C) L  z" W' a  U
set i (i + 1)7 ?* @1 o" U! s" G
]
; t) P; O+ E8 b' K( k% }end4 |! e' S1 g" j2 j# L* {, d) B
, r! r. g& Z7 K
to update-global-reputation-list
3 h8 t9 T* p$ l, Vlet j 0
, s+ _& `  ^2 N# Jwhile[j < people]
1 d- b/ \) ?4 |" p) E[7 A2 n; f5 k; _& r5 X; V: I
let new 0
1 m: n5 R( x4 U;;
暂存新的一个全局声誉0 [  ]) C$ v6 ?3 i+ L3 p2 Y
let i 0+ Y, Y, j/ c0 z  i- w  U% J
let sum-money 0
( F4 v1 S, S. i- `& Q" c( B' t0 x5 Olet credibility-money 0
) ~2 k7 g. }: W6 ~7 f, @while [i < people]' x! d; a3 A% w" d2 u. Y
[+ V; f* s2 G" G
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( r' ~# R/ y9 c3 Wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) x3 T; t7 G4 i2 |7 u' q$ u% q: t" Qset i (i + 1)6 V. E- o$ |) }7 \. J$ g
]1 X6 V$ L* |# i6 a$ I( P' ]2 x$ g% a, ^  |/ g
let k 05 C" t9 e. t# o2 E
let new1 09 M3 b1 P$ `9 O1 H
while [k < people]
- S7 @4 `2 ?  k: j# b: G[/ L) f% A/ O% p& g
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
# K+ ^5 @- W5 H5 s; c" M; nset k (k + 1)4 e/ i' o# }9 J6 o+ i) }( W
]! m; k$ {; a0 D. w4 v, B+ Y) J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" V7 k% E/ c" L% o7 c8 j% p* L. e" Wset global-reputation-list (replace-item j global-reputation-list new): X# F  e" A6 z9 c0 n- p8 M; R* b
set j (j + 1)! L% a* P# k+ e$ D8 P6 R8 e
]! }( A- _9 u" R
end
8 N* x* I# T2 I
, ^2 ]! S) D1 R4 |3 f& U8 R# l7 R6 V/ l& p8 }

8 i3 M  V  ]1 r6 V: Z) yto get-color
& Y% t. q- o' c) j/ K
3 T' m8 G6 w3 Dset color blue
5 U9 c% z+ e- P5 I' r
end! T/ f* {1 q& y# C

* A/ k: t( Z. K8 q7 R  z% zto poll-class
: Q; u4 q2 @5 B1 z& l% }8 o  Z! nend
1 J4 z& \$ c& k+ m: \4 e# e* k# l
. Q! K6 {* N# F4 fto setup-plot13 |8 _4 s" g0 v8 c8 ?

8 O+ S5 j7 k+ R! |* lset-current-plot "Trends-of-Local-reputation"
2 I; i/ q5 J. G3 w( @

& C6 S/ [6 ]" a' S0 V* nset-plot-x-range 0 xmax

* P* Y5 m$ _3 F7 \/ f5 B3 |5 H! _& g
# {) F! w: B, r. F" o2 ]set-plot-y-range 0.0 ymax

  C, i4 f/ d2 {6 O" }5 b( F! Q4 rend* }- ~' P: ]% w& ^
- O+ h, o- T: o: V
to setup-plot2
0 i, r' Y) _1 M5 Y7 r) O8 g2 k
( C) S( D( _4 uset-current-plot "Trends-of-global-reputation"

- |" |. y* u5 b5 v1 w+ [2 J: [: `* Y* ?4 f9 v  q
set-plot-x-range 0 xmax

; Q( L6 {  l- t% Y3 [! g) H
+ s: n' m  E% R1 B1 _+ \& m2 Pset-plot-y-range 0.0 ymax

4 M8 x9 {' p- X' a: xend# X3 M& q, T2 Z% \* z( l

, w! d, `- L( E; E1 M: J9 Fto setup-plot33 T: f5 ~% U( i4 |# B
. b- {; l1 ^% S3 j3 E8 O
set-current-plot "Trends-of-credibility"
- h( ^  ~9 k% H! T: o' P  u

* I' S4 D6 _5 U+ jset-plot-x-range 0 xmax

2 Y- x4 n$ _$ f9 F* P% c$ b' P, G3 Y: _6 j" r) m0 n( \
set-plot-y-range 0.0 ymax

4 C7 M- q& x3 Dend2 l. h/ Q& U; U8 f$ Z
1 ~$ g2 d2 J* F% r
to do-plots% H  y( B0 G1 c  x7 }' H
set-current-plot "Trends-of-Local-reputation"
2 W1 t  k" d6 F: v, Eset-current-plot-pen "Honest service"
; O" ]( T# Q) c/ j  Y' Tend
2 j) s2 K4 B: Y1 B3 K' M1 J: 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.
) f, T1 A. S1 A, a+ n6 A% u! U# S. e
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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