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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:7 v- I: s8 Y9 k, N3 S
to do-business
& e0 U1 k0 s) @8 Z rt random 360
7 t6 ?6 e6 i3 ]" q" O, J fd 11 m( E$ L: S. \4 p
ifelse(other turtles-here != nobody)[
- B4 m7 h3 f4 c   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.
5 Q  g4 ]# d+ @9 e, q: L3 D* c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 h* l& S. G' D6 O4 O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 |* F$ T: G' {1 d( J6 J  J( d   set [trade-record-one-len] of self length [trade-record-one] of self. M$ ~5 `' ~; t' C: S3 N# _
   set trade-record-current( list (timer) (random money-upper-limit))
& D8 {4 m7 p# u: h" a/ k; `5 e( E" [2 ?
问题的提示如下:
- r7 O- n3 l8 J3 m% q& _; g
0 f. D, U5 S1 `+ X- Herror while turtle 50 running OF in procedure DO-BUSINESS/ D" ~( Z; c- a, J/ C* x
  called by procedure GO
# W7 x; ~6 b5 {( AOF expected input to be a turtle agentset or turtle but got NOBODY instead.
) ~$ c* t# m$ l7 d  |2 {" i
(halted running of go)
: c" ?1 A  |# E+ |/ D, d9 N8 G3 n; G  i
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! u1 X4 s
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
' C2 _' K6 _% r* K  _globals[
6 r* E% k. Z8 {3 Y' ~( Nxmax: _+ F+ r; {( U- m; t% O
ymax/ q5 ?: o8 R3 p: I  O
global-reputation-list
4 G3 v& o' C" e* c6 X
( Q$ [4 r8 t) K! J1 j;;
每一个turtle的全局声誉都存在此LIST
- u3 M' i; |- t0 Bcredibility-list5 i. M+ ~8 R! Y
;;
每一个turtle的评价可信度* k0 b  b1 f" [( ]" l
honest-service
, l( V# [" _( Wunhonest-service( h7 s' Z$ Y/ G( K: j/ G2 y
oscillation
. v, u" _# o# K+ g$ Z, G5 [rand-dynamic6 J0 P" F; D1 K8 M) x% O, m) o
]
1 L% b. i5 _7 z7 N. |* _3 n8 M: a1 r% Q: v% ~3 k) C
turtles-own[
7 N! R; c$ C, X. A! Otrade-record-all2 m% g7 P1 p* v% s
;;a list of lists,
trade-record-one组成" T: m8 c% Q5 e8 M0 B* V
trade-record-one/ W# b) B( S  L/ ~
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- z" V' ^7 M/ t( ?! e, z
4 V/ ^$ J' J) f;;[
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]]  A1 ?+ l- x9 {! B3 l3 S
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]
( z$ ], L, e* J) c. Ecredibility-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& c3 x7 v. j. Z1 c9 J  y' z3 E  Q
neighbor-total. d# p( ], W) Y$ t6 {* y
;;
记录该turtle的邻居节点的数目
6 H4 Q4 ?) v  n1 y* gtrade-time7 I- K7 b2 E8 Z
;;
当前发生交易的turtle的交易时间
  x+ X; \8 e1 ~% |& W0 sappraise-give
6 }% I" M% P8 S5 I;;
当前发生交易时给出的评价5 b, _! c/ X; t7 g2 y7 Y$ R
appraise-receive7 O0 h) g" n6 h
;;
当前发生交易时收到的评价* |- m* d4 m  W0 m0 z
appraise-time! @0 ?! I% Z; u
;;
当前发生交易时的评价时间# @2 n: Z7 f+ _0 ?9 r  I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, e5 I# Y& q9 R1 N, ~
trade-times-total
& a$ L3 O8 {2 N+ u  X;;
与当前turtle的交易总次数: n0 \! I+ d7 F) F; {& Z
trade-money-total  a, T' \; U- A- j: N0 M
;;
与当前turtle的交易总金额
, J; K6 Y5 {+ ~. Blocal-reputation
3 `/ j& i" s5 V$ O" h2 yglobal-reputation' s( J0 D. n6 ^- Q
credibility
* {* q8 y& C# z! F, m;;
评价可信度,每次交易后都需要更新! a! `8 H/ j, o
credibility-all9 N+ f" T8 Q  J* D, U+ q
;;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3 \: k$ _  T+ [* ~% J' a/ E
8 b' r1 V4 I1 k+ U3 \  I0 X) H
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.57 t1 N1 y0 b* q1 p8 k
credibility-one: O2 y8 u5 O9 m3 a1 K& D
;;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people3 u# K$ z. r! U: t7 o. q
global-proportion
% E- N* `) M: E* ~$ Q# lcustomer
. s- m( H- y- H9 Q: c/ y9 hcustomer-no
7 A! F1 p$ J" R- Ytrust-ok/ v  h' r( G* r0 k- ?; p) K, W
trade-record-one-len;;trade-record-one的长度
" N9 h# V5 r: B  j]" f2 F4 ]$ A$ k9 b! D6 D$ x

4 M  {/ J' d8 D;;setup procedure5 G$ ~, {- X5 u9 S0 M% |0 G
* h5 W, q; _6 ^  Y
to setup
$ |& M& m/ P' X1 K0 ^1 o
: g7 d. m. s4 L' wca

: e7 r8 g$ S& R# Z( _# S0 f, f0 a6 Z7 s  L4 r: n
initialize-settings
! e7 L* \; g& K$ k

- W  X" d; a0 x* U/ Acrt people [setup-turtles]
" `  z; j5 o9 U% I9 q

& P, B2 B& ?0 P( Ireset-timer
: k/ z7 o& S. r, |) A

$ O& d* N/ W6 @, W& o: l* N; zpoll-class

2 T3 \7 Y1 }9 V  U9 h8 D8 b! n7 `9 `$ S
setup-plots
, V6 o2 h1 _. |* K

1 y; A) H: E5 {do-plots

* T+ K1 l- q' B, F$ Oend8 n7 ^5 D, q2 F3 k1 h
( {. n+ b( L, a! i' D8 V
to initialize-settings" w( Z, ^1 S! i6 d

  m: h4 k! a8 K- z- Vset global-reputation-list []

6 K3 L& W- b9 h$ K* ?, g8 [4 K2 d+ t; U% ?
set credibility-list n-values people [0.5]

6 D+ E6 G8 E) Y" e- w2 P, z  H
set honest-service 0

8 c0 [: H" \# s: p$ L
9 e$ F7 B4 J, q- ^7 W2 |" ]3 aset unhonest-service 0

! L2 A; Y  w4 y( f) Q! W* S
4 q% u' t4 e7 o" Z2 k1 Oset oscillation 0

+ O3 H2 ]5 c% w3 ]1 T' v! H$ }/ a4 d. X
" f  B) x" P4 i$ Fset rand-dynamic 0

6 h) N/ o3 @" J* n* o5 S7 v6 Y1 aend
0 w) u0 U# e( e* {2 w
8 [' w8 f5 q0 Y+ n! Sto setup-turtles 2 M) Y" p( ?1 J* n: ^! B% J' C
set shape "person"
: t* @. w* L; I1 Z& [setxy random-xcor random-ycor1 m* L7 K5 D. k8 m; A8 S
set trade-record-one []
' w; M' G; A6 I) ], ~' R

8 J3 s0 a( p. ]0 u) Gset trade-record-all n-values people [(list (? + 1) 0 0)]
; b; x0 _. r( s$ E2 G9 D, t

$ |  K7 z! m2 N0 R( c3 Kset trade-record-current []: h% J) z" J3 Z' j6 U# @; \+ ^  ^
set credibility-receive []- @9 J1 v+ T( E; M- B
set local-reputation 0.5
, y1 H& d* Z+ q  t; z) f1 b9 w% |set neighbor-total 0
& O8 C6 A4 c. @9 A1 m/ j+ g; Jset trade-times-total 0) _3 m% G0 b! L/ h3 ^$ t
set trade-money-total 0
. {4 v- z2 i0 o( C/ B7 ?9 i& H% bset customer nobody! K3 y. J* J: s
set credibility-all n-values people [creat-credibility]7 F$ \  j) _* P( S9 @: P; J7 o( U
set credibility n-values people [-1]
8 g# }' O3 [7 j; f/ ^  ?3 lget-color5 j5 v. O3 E. R& k! f6 T0 v
4 P5 y6 z$ l' ~5 w# ?9 Y* B
end
5 k; `, m7 _7 u1 i8 ]: M$ }
2 r0 b0 ]+ ?/ \4 z( sto-report creat-credibility
: Q- Q7 E5 t2 O3 Rreport n-values people [0.5]1 n9 T' v9 m/ [: N" W. `3 k/ m
end1 l: Y. ?$ Y  a
6 ]: o4 U$ i+ G5 {6 ]. Y/ F1 L
to setup-plots
1 V8 Z) h+ v. B
; s1 {0 x, J. W0 s% k9 ^# nset xmax 30
; ]  `, D9 m9 x: _$ z, F* H
& I* [5 [  H# L: l  t& a  m
set ymax 1.0
( G1 d: B. |, m+ I8 f
! A8 @- M+ z( H* R
clear-all-plots

" ]) p& x9 h! d% ]& c& Y6 `; c% l
setup-plot1

/ g! {. Y3 |' |' d6 G9 A
5 t  j6 K7 C: v# Z5 Qsetup-plot2

: P6 N# L, T0 p
6 @3 \6 Y, j; j/ Nsetup-plot3
# d6 Z( q0 A. ]2 z2 C
end' s8 L* h% ]1 d. _0 s  D
, l7 I* h7 u4 ^
;;run time procedures( i5 j# `! k2 [" H) M
  R+ g1 q0 T: }) K; [
to go
: B0 X$ l  z/ t: ?2 l$ K3 i! f- k+ F$ o
ask turtles [do-business]
  d; w  T# r- X3 |. @. ^, P4 S, A+ e
end
+ J# f" e% W8 k  H- ~3 D* _; j8 f7 A5 p
to do-business
+ _  [8 d; Q- `0 w

2 B& p' A0 F9 X. A" @
/ p; r0 \" x1 n; s1 ^! urt random 360

/ e) X5 A# T% E( N1 O5 ?. E+ f
( y3 G: \& n3 R# y, G$ c" yfd 1

0 k# q8 `4 W& i- _. z8 R6 e# r0 L6 h3 d& T8 l* l
ifelse(other turtles-here != nobody)[
/ H0 j1 C$ Y9 l% g6 O  a
$ a% t+ \& V; a( T. Y
set customer one-of other turtles-here

, M$ C- Y( ?7 u8 r" ?6 q, D
* l* h: ^) t4 _& O;; set [customer] of customer myself
2 t2 ~- y2 X) b9 R3 ?1 I3 c. C

. D: ]/ ]' }8 [. w, E/ g" W* Q) K& kset [trade-record-one] of self item (([who] of customer) - 1)* k  `6 ]! N% C- v0 u$ x+ y
[trade-record-all]of self
9 T# B, [4 H1 A5 q  `& c3 P;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ \5 G( }4 _5 ?8 W$ O# C% @) l
8 Q- `: T4 _3 [, o( F8 Pset [trade-record-one] of customer item (([who] of self) - 1)
( }: l; [/ L* U; k4 [[trade-record-all]of customer

0 \$ D( t& w4 b# ?$ b" P) M$ V8 b9 f( n9 e8 N
set [trade-record-one-len] of self length [trade-record-one] of self

& J8 t, k6 f/ l, ]/ w. B) Y5 C2 N) m/ q4 w& m
set trade-record-current( list (timer) (random money-upper-limit))
6 K" N+ o: m  d

1 U, L: Q" I: B# D0 N' v9 u4 task self [do-trust]3 G9 h1 S! c  u" f+ t$ s
;;
先求ij的信任度2 y! [; U! J; \  D+ ^
# j( M. u4 N+ I  n$ J, H4 L% k
if ([trust-ok] of self)
, w0 t: w# k' g) v& i8 U8 ~, i;;
根据ij的信任度来决定是否与j进行交易[0 \8 j4 p% W9 ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  A% u) C. u- p0 L$ G$ y5 k1 ]- o/ S6 p; p7 c( I2 L9 G
[

9 b4 w* o# Y, r8 O9 K3 b
  Z7 M7 a. O4 ^2 a$ m: `5 V0 ~% ?do-trade

/ D3 t) Y: r6 X3 ^. h! x+ i1 Q
9 E5 @9 ^  E6 z% Y' D$ x9 dupdate-credibility-ijl
0 [: G  |- P. ^- F1 J
2 }* c5 Z, q% p
update-credibility-list$ f$ ]7 S! \/ Z
; C. b- e, D0 X

# m2 H, A5 J+ H1 }0 Lupdate-global-reputation-list
( Q8 h9 B5 D4 ~0 D
  Q7 O+ l$ s  y$ i. V
poll-class

$ t, W+ }0 j& |4 B5 `) p) p1 K& O$ n6 [" `
get-color

; k9 X$ o4 E8 ^& c6 H( `! T" c( {
]]1 V) d5 b% C. V7 r- [/ u2 y
0 V8 I2 ]' [6 H! I$ i7 H
;;
如果所得的信任度满足条件,则进行交易
5 }. M9 n- A6 o5 x2 E! K) u. K  h( B' O& w
[
. j; T* z/ G0 F9 m2 Q2 j4 F2 V( s
. `; r8 g! v9 d
rt random 360
. F8 M9 _: w1 f
, O! i- m, c( v+ _& h+ b
fd 1

* c0 m' Z  Q( l8 c& W% E3 @) H# i7 t% Y
]
' ~- ?- C+ }) d7 f! V* d5 i. J/ T3 Z( ~

  Z1 U  K; n; }* @end
3 k8 H" m& m+ ?

3 B* w% S& M9 F/ P  N6 E: e( rto do-trust 2 {& F! m2 g9 g2 d3 d2 }: J* e
set trust-ok False
) O# [- I' _4 M' {4 `( n% E1 ^# O. C8 C3 M0 [. }
+ ?6 u4 U+ v5 N" W) i
let max-trade-times 0
9 V" e3 ~+ x: j4 j; i. Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, l# J1 ]6 Z) l/ J0 F: V' W" u$ Mlet max-trade-money 0
/ d0 `8 O. Y1 p% n8 q" Lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, a/ e. K" U) B6 c/ }$ Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' a) c5 }5 Z- b
; r) o0 b( M0 |& C& G

6 ~! o4 a( g& I, V8 ^5 Xget-global-proportion; ?8 q6 Y: U7 o) ]2 V! ~% F
let trust-value; b9 F9 Z  r8 ~" c9 v0 P
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)

, c1 A2 ]; Y/ l; c% ]3 Jif(trust-value > trade-trust-value)
5 r) @) d% \6 D0 H3 P" S, |[set trust-ok true]2 Q' c; Z6 R( t% r/ B) x, J4 u/ {
end! F  p7 L3 Z# b- o

0 w/ o: V6 R4 s" c& p0 `to get-global-proportion
1 E, s8 d0 g3 y1 Mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% d% |8 y8 i2 p: E( o; w[set global-proportion 0]
7 R4 |2 M% R# \0 D7 l$ t[let i 0
4 ]* R, D4 A' `0 r" ulet sum-money 0
; J: H; G2 t2 m  ^0 n& lwhile[ i < people]3 d+ _# i- Q1 u+ K) K
[
& N6 c* P/ h: o1 k4 j) Pif( length (item i/ @4 D, \2 ^$ I' I
[trade-record-all] of customer) > 3 )
7 j" n  m* Z( z) u7 P
[
$ \1 f, y% m3 p0 [; _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# }4 Z) S; q, C* }* {
]
" r; F# P5 L/ I9 M" O3 a9 R4 v* j]
8 ]- e( s% `$ V8 g. Elet j 0
8 }0 k; H. ~, h* C1 Rlet note 0
' C7 @9 \7 g! r) t5 jwhile[ j < people]5 R1 `# g- |% D* h; z& R
[" @3 N9 K# S1 e' a
if( length (item i
& h! T0 [7 B6 d[trade-record-all] of customer) > 3 )
5 R, y. Q! Z( x" T) U. M
[9 ^7 t6 u- g& k6 C( p& z' y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, A0 O& N7 \9 ^; O; d# P# N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, ]7 o' {6 F3 E) O3 R  F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( ]. A! _  E7 C) v
]0 c  S% @7 C: m# W& m3 H
]
! c" ]( I8 A9 }8 q/ nset global-proportion note
# K0 F( t9 e5 \$ a0 a$ R]5 l6 x) ^5 U4 p+ D& |' W
end' U  U  {3 e- K
2 f. ^. Z6 O, B: ^
to do-trade0 }( e# ~4 p/ y+ r/ n8 M
;;
这个过程实际上是给双方作出评价的过程
5 N. }1 Z  R' \9 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 J5 O1 r; R8 K* N3 X7 Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' v% _' n$ d+ \5 |0 _, aset trade-record-current lput(timer) trade-record-current
. j7 P2 P  f* |& b;;
评价时间
0 D# |, m8 J/ S" Oask myself [# K6 [1 b# B4 P# J& U1 u3 \
update-local-reputation5 W0 p! v/ B& r# ^
set trade-record-current lput([local-reputation] of myself) trade-record-current* f; D" K+ z8 C+ k) t
]
; z8 r8 M& @6 D% L2 C0 I3 C4 Jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 w) Y7 ?/ n1 R7 H, `
;;
将此次交易的记录加入到trade-record-one* u5 r+ \2 Y6 W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 g3 z' t. A* J. L+ N& T
let note (item 2 trade-record-current )
" q) C; d: a: X) B1 {set trade-record-current, V* w. i3 n3 v7 M& ?6 s
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 x1 s  Q# ^: e6 Z; y, p
set trade-record-current
/ p4 p, p+ M/ |8 t1 Z' A; n4 n) H: k(replace-item 3 trade-record-current note)
% q) Y8 L' J3 M" O/ M9 u( b+ p' ]2 \- q. e

3 Q& W2 u3 k% ]ask customer [
( n2 b& |5 L* r% s3 A. X% ^, ?update-local-reputation* ^2 m# ^$ U4 w
set trade-record-current
" v4 Y$ ]& p6 I# a$ U, O* x+ |: |+ c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 s* A0 b) G# i; X0 G2 C
]$ Z) V) Y; ^2 _) q  S
0 ]8 `" f- U( ^: s1 h

7 N& O3 Y$ s3 L0 aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ u- q, h$ I* C  B3 Q% {
$ t, `9 o0 K0 w2 {4 q0 y$ K, [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ u4 @9 I1 W3 u;;
将此次交易的记录加入到customertrade-record-all5 C4 E  j! y1 J6 p- ]+ e
end
0 G* c0 `: s) e, B3 B2 T0 V5 t
/ t9 `. r7 Q, Dto update-local-reputation! S. q0 K) ~5 X! \9 A! J7 F' N& t
set [trade-record-one-len] of myself length [trade-record-one] of myself  R5 c* J( E+ T4 q+ v
% o2 k' j7 ^6 T5 _$ r3 a9 g( ^

0 I9 P' ?7 `  `! k6 L  R;;if [trade-record-one-len] of myself > 3

. n3 t/ c/ b+ Kupdate-neighbor-total
8 \7 e4 O0 z. W3 |, g# a1 o;;
更新邻居节点的数目,在此进行9 d8 P' K3 }/ \
let i 3
3 a. U% b( m! r0 clet sum-time 0
9 y$ o# Z) M  a( ^3 M- dwhile[i < [trade-record-one-len] of myself]
" K% u! a( ]& I3 n3 w. T+ m[. H4 P) j+ l3 u
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 Z; W% v7 q4 V& ~set i" X$ E% F6 C: R/ K7 q2 r
( i + 1)
8 I' M. S2 {# |
]
# }9 A" J* i1 U4 @3 xlet j 3
# R! v! M" y$ _let sum-money 0
# m: A% C0 @( i+ _$ h7 m/ ]0 bwhile[j < [trade-record-one-len] of myself]
: O4 o# J2 u6 e' T: h[' L2 B7 m; |+ a1 _1 ]
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)
* F6 a( @8 a, T! m: F% t. ]) s( _+ yset j
! R0 `+ X& O- n% K( j + 1)
+ s7 H1 X4 E) {, @+ V; |
]
5 W2 x6 j- G3 S' s0 ^5 Z. m0 jlet k 3
% P6 R) y0 s- d8 W1 `let power 00 A) ^- A8 t+ m8 q0 H- Q
let local 0* I" e8 e9 J3 k. d6 g
while [k <[trade-record-one-len] of myself]
1 u3 T# q  E. {; h5 m[$ v7 H& s6 {( M" c3 I) x
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)
9 M: C/ B& O( C8 qset k (k + 1)
! h4 i7 f7 U& y' y) u/ ]]4 D6 n) g" L  z; F' w
set [local-reputation] of myself (local)6 r  _% p* N' S4 v: a6 R8 D
end
1 \% q+ X$ |5 v: w! W7 T+ j& u% E7 b( v& F$ F
to update-neighbor-total
6 @+ V/ e/ \' s$ t
! x- G1 s/ b0 |. j2 L/ F' `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  R6 ]6 T! H- e( \: `; {' h2 `" {( z" ~' s5 ?- F" g

& h( ]) T) y6 G$ g- ~( Gend3 T- ]2 X$ j' B5 v
7 ~: U, V- g4 U" }# X
to update-credibility-ijl 7 Q" y; u/ z! K" j) K
. V9 q4 R& E) J, e/ C+ 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。
, P6 [5 ^) j8 p+ _+ I: a( ~let l 0: M9 r& w3 J5 e1 o& M3 ]; p
while[ l < people ]
! @/ y" c1 ?- K;;
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8 `: x/ w( U: i& w7 A
[% X  S* {" A7 N. w/ O$ K3 M) ~
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% \6 P( @; z; i7 `if (trade-record-one-j-l-len > 3)
' G# T2 J' P/ n% Q( p$ X- G[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
5 Y" _6 m* \" h3 M: I, B& S/ tlet i 3
7 p# k7 l8 }4 M0 O1 |0 Qlet sum-time 0
. V& o: D: s4 fwhile[i < trade-record-one-len]; D5 q' @+ S. R: L& G/ L
[
3 m3 t- e1 c5 C& x* X0 b# G5 Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 ]6 @6 E; `) D
set i$ [4 j8 X$ Z# b+ x1 Q/ o
( i + 1)

9 `! B3 I- Z! A" P% S]% q) f5 ]  B$ C6 F1 q0 h: y
let credibility-i-j-l 0/ u0 J$ V' t/ W2 E
;;i
评价(jjl的评价)
* k& d6 W) s- m" e0 |6 |) M* \let j 3' F5 y6 ^6 R9 l" E9 F/ ~
let k 4
3 [6 r5 v3 h2 m+ U0 Uwhile[j < trade-record-one-len]8 _* c  m, |  Q$ Z7 ]3 O& g, X
[- X% t' k1 p2 ?0 B
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
4 L. U6 R  M0 @9 `1 C5 ?" P. Pset 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)- ]6 {5 P8 e; j  H5 D
set j
, ?2 I7 Z# A! L4 V9 T. I( j + 1)
) }9 [5 N& g- u
]
' H. c2 n: E; X# I' e3 @set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
3 z" T/ n7 ]9 O  j' j2 l: c$ J4 K) I1 Q8 p

  F+ ?1 n# V- \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  q- E6 r6 B' C1 P5 P;;
及时更新il的评价质量的评价
9 s7 t* }5 C1 E9 v% aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% n+ w2 k* K/ e! g
set l (l + 1)$ L& t0 R& k1 e% G& f; T! I5 p/ A  j
]+ ~" x1 t. a3 D; m& H
end
' N, b/ i7 c! X6 [4 A& n1 H% j& w2 `; Y
to update-credibility-list
0 X0 M- m! O( i" I  Rlet i 0  x! b7 H' v" L: p
while[i < people]
. \* d4 o* [4 w1 u" U: w% X- H[- n" z" c7 N0 \1 l: d( t7 e
let j 0
: a+ {' u3 p* l/ W) @! ulet note 0
% m( j9 p- a8 h4 G7 {% m: b6 x; vlet k 09 t1 v7 g$ l! }3 v7 m/ P
;;
计作出过评价的邻居节点的数目& n& F' R' J, Z6 A5 K) I$ i; k
while[j < people]
" I8 Z) @( B$ r9 _[
. ]5 s* M: C8 L: N/ x+ @+ t7 Nif (item j( [credibility] of turtle (i + 1)) != -1)
/ {. _/ T4 }, D;;
判断是否给本turtle的评价质量做出过评价的节点+ z* S( i, p3 `
[set note (note + item j ([credibility]of turtle (i + 1)))
8 F! \# L) g; n% |7 ];;*(exp (-(people - 2)))/(people - 2))]

" _. j3 I8 Y% J5 \7 Kset k (k + 1), ?) Q2 H9 N( t. S* z, f0 M
]" A0 g6 c# `# X5 d' m% \
set j (j + 1)
# l; J6 ~& E' \2 `]* D8 `; e2 k+ U3 Y' l
set note (note *(exp (- (1 / k)))/ k)
5 H7 X9 q" c& ~1 ?) o, J; Xset credibility-list (replace-item i credibility-list note)3 k6 c! D# d8 F/ k: \  U
set i (i + 1)5 O) d, I, M* x0 h, F  E, J* b
]
( |( X8 H9 j) Q) w2 X2 @; {( O$ Z/ wend+ G9 R: M  H: P2 g" a* K
+ u2 [. {/ o5 n+ [! Q2 I( H, P
to update-global-reputation-list
" v& R+ A0 A0 V: Q& H# slet j 0. ?, h* @2 }* O
while[j < people]7 P' b6 j) c' w0 l
[2 c" q& [% ?5 T* \% t: _
let new 0
6 O' P4 [( [9 N* ~/ n; |;;
暂存新的一个全局声誉4 u$ S) O1 a8 j7 [( C, v9 \6 _& b. I
let i 0
/ L+ [# t! ~( k$ M* u1 Flet sum-money 06 e5 U  {: i; l' I1 l
let credibility-money 0
2 D7 e1 D- G/ O5 vwhile [i < people]+ |2 ]3 U# k* S  ]0 k" `/ E+ }
[  B& G* q# J% N4 p
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 x9 j3 D0 @: V/ L5 c' Z9 F7 |
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- t0 R, Q) H  x4 C6 Q! q
set i (i + 1)
# K6 t8 u% s" K! q]
/ L& Z6 O) o9 R6 B' ?let k 0/ a7 S5 o& N' p# L
let new1 0
1 g3 Y" S0 ]9 L# Gwhile [k < people]
( o6 I4 S1 ~" T$ E$ D[
% M% [" `8 F3 [1 j* Fset 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)2 `+ c+ j- ^& }/ u  P
set k (k + 1)+ A  L% O  j  k; c( @- J2 H" c4 G
]7 H& N+ {( k0 t5 k( p* }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! h# I" c: B. V' R3 p8 dset global-reputation-list (replace-item j global-reputation-list new)
# P; v* x1 B6 b6 @( a  g& hset j (j + 1)* q( G) v& A3 K  ?$ b. I
]
& Q" t6 w9 `' C5 q- v$ ^% yend
7 A; T) o; x) ?
4 {  b: E' n+ }2 E! _$ a5 @: m( L: y
: A+ {( ^+ I2 \
to get-color
2 @7 c% Z7 K4 k! L. H5 q; U; @/ s  Z, ^4 e- B
set color blue
: o1 C5 o8 C) X. x, v. @+ u
end
3 I' D  Q" f5 ?0 y1 e5 A6 l, i; K- y4 Q# t
to poll-class) |+ f" p+ X4 {9 I- Q6 G( _
end  X5 V) ]5 y2 k& f  e) H1 X

9 _, X! K7 M9 \( ?, j  G+ I" ]to setup-plot1
9 X' }. }8 D! B6 `1 l6 b6 J
* J4 |7 A/ n% J6 Y4 u& E: zset-current-plot "Trends-of-Local-reputation"
5 {# d! T  s9 l9 Z$ P
! _' Z; y9 J- Y" I4 f
set-plot-x-range 0 xmax
2 l& N  @  q. ~% H

" a+ P3 [5 K1 V) o: b5 u$ h3 p; \& |set-plot-y-range 0.0 ymax

/ q, X+ w! k3 H; Dend
! g) N- Q! S4 b1 z2 u( R* D3 Q
- a* A$ l; W1 q! C7 q0 Sto setup-plot2
/ t9 B( w! ~8 x6 W: k" g: E$ Q# k6 }: E9 g* |) z  d; B
set-current-plot "Trends-of-global-reputation"
0 @* `! t7 m: b" u3 W3 l  b
. l$ h% s6 \& b, n' `
set-plot-x-range 0 xmax
# U1 t! N( f: a8 G( \. M8 M
, r5 l) M0 O; _5 `# e" ?
set-plot-y-range 0.0 ymax

, D9 J6 R' |5 G# tend
, g$ _, E5 f+ ]5 \- w) O
* c& R# V- c5 I; C( u4 p3 tto setup-plot32 v5 _8 M2 W( @( f6 {2 K( H

: r8 h- u4 o5 @4 a6 r, m) O# Z8 o0 pset-current-plot "Trends-of-credibility"

# j5 o, o+ R* t# k7 ~6 ~% r. P9 b3 ~5 g8 r3 x6 U& ~
set-plot-x-range 0 xmax
" g6 z& t+ `% x! ]+ Q/ e
: m) P: K* p6 x+ L2 L
set-plot-y-range 0.0 ymax
1 g' R8 {& Y: H
end
, N4 E1 W0 C9 }  [
+ Y/ f; ~) g9 V/ X7 g; Mto do-plots$ i/ q; A; \7 S2 l: i
set-current-plot "Trends-of-Local-reputation"
' O' i, j% y1 a8 q5 O# Bset-current-plot-pen "Honest service"" d) M7 y& ^. O, b
end
  V0 s/ i/ y' t2 H4 w  \2 M
, N2 F! l' _: W0 }. v! o7 I3 H$ s) _[ 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.
8 I1 E  d3 @+ G4 K
3 Z9 L+ b3 W. X6 n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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