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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:' y' C5 }0 ~% e8 K. w8 q
to do-business
# ^; c4 }" x6 H& H: k' p rt random 360( a: v7 t0 [% u1 [, ^
fd 1
# A' f4 x) H5 L  a ifelse(other turtles-here != nobody)[
, E/ u4 D! C/ Y6 K  M0 b6 ?   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.  d1 ^% i! y' D9 D9 o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! T$ Y1 P* o0 ~- b  D# u
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& H0 g# n- y; t) T2 N9 p. E
   set [trade-record-one-len] of self length [trade-record-one] of self5 k! Y9 W' p. A# }) V1 S9 F& o5 `
   set trade-record-current( list (timer) (random money-upper-limit))
/ d6 o5 {! w0 |& ~8 S/ k, f& C* P8 ?; d- ?
问题的提示如下:
/ ]- {" p5 N1 F6 H7 L2 t5 Y6 r3 f! F% Q6 Q$ Q4 _
error while turtle 50 running OF in procedure DO-BUSINESS1 L) _( t% E) D2 M. I3 _4 d% i' J
  called by procedure GO
$ P# @5 g4 Q0 O! YOF expected input to be a turtle agentset or turtle but got NOBODY instead.4 Y% K: @( `& T8 d0 |& O" H/ W! L
(halted running of go)
9 X' L4 R0 n' P3 x9 B/ H/ [$ d9 i1 E
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~~
8 O% q! e. e0 f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; h4 a' Z  n( ^, }7 R/ z. @9 f
globals[4 f* g! G, a$ ^7 t8 F  s
xmax5 f" j9 k" O. L2 p/ S
ymax
. ?: S" q/ c0 g0 y% _2 k- zglobal-reputation-list
8 p$ }' a* y5 c  l) B; I
  o# o" m4 d% h8 j;;
每一个turtle的全局声誉都存在此LIST
3 F) X- t% R% H3 |0 b. L- ]& J4 Tcredibility-list: G! d% U3 q; I* z, P6 @
;;
每一个turtle的评价可信度
& f( H& I7 ^( w% T+ ohonest-service
$ b- {5 a% `8 x+ g1 vunhonest-service9 o& ~) {* N9 C8 f% I9 w  N
oscillation. n# O1 p" n- `; h: d/ j
rand-dynamic2 d4 E# s+ f; e1 W% |4 t7 |/ N2 m& s
]. u2 S* o0 N# z1 P5 R

: I7 e3 c# U7 j5 k6 R  F3 [5 U# qturtles-own[
* _" W2 z! G# m' htrade-record-all- }0 ^7 g5 w1 V2 M5 m( v- ]9 f, Z
;;a list of lists,
trade-record-one组成
% ?# p4 U5 P/ B* E' s1 L0 k- ]trade-record-one
' T3 x2 ~" r) p' Z% q8 s- Z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' E1 H3 D$ \- B
& x, G3 M1 v0 M
;;[
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]]  q- }+ r$ Q- c: i0 u) @; D5 `( J
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]
! _% M, {  b9 Qcredibility-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% r9 X8 Q6 g' h! G, {, P1 i$ g
neighbor-total* H4 w4 l4 Z( ^& z$ W2 L
;;
记录该turtle的邻居节点的数目# |' W- P2 p0 w0 \2 `: H* z% t
trade-time- u: k8 w* c/ t4 E  ^
;;
当前发生交易的turtle的交易时间
- B/ `1 X2 r" ?% m' Vappraise-give" B9 \! m$ v. P% O
;;
当前发生交易时给出的评价
- E3 _. O0 U. fappraise-receive* U0 O, I: ?3 T% C3 R6 y! K3 n
;;
当前发生交易时收到的评价% [5 K8 y) m! n2 e* E
appraise-time' \& i1 G6 j/ p
;;
当前发生交易时的评价时间% v( O! i) |+ h' m' w* L( |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
  B& Q5 c( G1 G" `* Xtrade-times-total' V; g$ @+ F9 u: a
;;
与当前turtle的交易总次数
9 Z  P4 {+ m7 I# c8 gtrade-money-total! b, {6 P9 |- y% p
;;
与当前turtle的交易总金额
3 t3 t4 d0 W+ y" r" j. Wlocal-reputation3 I- O( y% p. V2 f+ A
global-reputation  Q9 n* E2 {( @0 r+ _: n  x
credibility# b* x  J* ]# h. K4 \- D, D3 q2 e5 g) j
;;
评价可信度,每次交易后都需要更新
" I2 N% d: i, _% j; ]! Hcredibility-all! C; O$ _# q4 V  B5 \% ~- O
;;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
$ Q! r6 `( }1 M4 a! Q  @& ~5 `: a
;;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% \/ k/ X0 r1 C1 l/ T& y6 z( ~" kcredibility-one( L: i; o& |& T, r$ c& _
;;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
( e3 o7 S2 L( Q: W/ V7 ?/ Cglobal-proportion
$ c7 T% [4 J8 l: K1 Mcustomer
# @- S6 K9 @# h/ Ocustomer-no
$ U% _, j7 ?% U2 vtrust-ok
/ i2 u2 H2 k3 f5 g# q: I! q2 [trade-record-one-len;;trade-record-one的长度* ?- b0 t: _/ T0 ~7 e
]
  A. R  S! R2 z/ k/ \, E' f' T/ X  R4 V2 z! E
;;setup procedure- c4 x- D' \* q5 R! J* H( U

$ k* @1 U! l& \to setup
* i5 t3 R3 f; ]- ?7 q3 o3 v$ d4 {: x: s
ca
0 V+ U' d1 f" B( l

: ?$ C) s- `- y" [initialize-settings

, L  q# d* L/ q. [  X& z" m4 k- S! g% W: \. o
crt people [setup-turtles]

  ~% B2 V8 A# M: Q. M! q  u) T, ~$ q/ x8 g+ w) g# _
reset-timer
. P, r. `" M$ m4 `# h

: m, g1 u$ p, {& X1 ^' @poll-class
! T4 B4 Q" D% u, n' ]6 C/ P+ b

% X. L$ j4 h4 {* Ksetup-plots
9 @+ @$ E! q. e& l( L9 \

1 e4 X4 i$ w, x" K# }, vdo-plots
2 a  C# F; V2 R; Z* z3 u
end
6 r' X* p! X: R& C: H8 ~! Z# I
8 k4 a3 O$ ]) \/ @8 \; Sto initialize-settings
: z9 M$ y$ Z' P' B4 Q0 s9 l  n  ?! O% R5 r" h2 Z
set global-reputation-list []

" o3 W" Q8 \5 R% N
' k, p" D( g- ]1 h+ kset credibility-list n-values people [0.5]
, a+ w2 w1 z7 p2 U) t$ ]7 Q
; N; o( n; V$ N9 N8 f) n) \
set honest-service 0

4 W  E: ^/ w, S! J1 z: j3 D$ w0 ~* p' L+ f. u& y2 A
set unhonest-service 0
% J$ H, M% b$ I0 {3 z, C

, r7 Q: C( }' ?) C" K& Oset oscillation 0

( n- Y# x% R/ y. |, F
* ?2 W1 K' {4 J1 d" _6 \  w" hset rand-dynamic 0

' W: U# Z; y8 T8 b$ n5 J0 I6 wend. h8 T; D$ }: V9 Z& C

: _% z/ h( V. |! vto setup-turtles $ [% w' ~+ i9 W2 j) Y  _
set shape "person"0 b$ w5 l- z0 q5 ?. A( I
setxy random-xcor random-ycor
3 U& d. ^8 n' T+ h% z9 w" Kset trade-record-one []
  v& c: l6 W/ J
# J' t" M, d, Z$ j( p2 v
set trade-record-all n-values people [(list (? + 1) 0 0)] $ B# D0 E3 E, l/ F1 d. E, @

) }. ?. F8 K" S$ r+ ?set trade-record-current []5 E( R) \: D! l, R6 {* Q: ~
set credibility-receive []
( n& Q+ m: a2 o6 Y6 Q6 z1 kset local-reputation 0.5) X2 m0 g: h  R4 y- T
set neighbor-total 0+ n" N  e' m2 z8 [! W2 A1 {
set trade-times-total 0
  t- T; p* `1 _/ s7 pset trade-money-total 0" ]; ?8 l$ I) t1 g
set customer nobody7 `$ z) h* y) j; ^1 `; t
set credibility-all n-values people [creat-credibility]3 Q& `( a$ F& n! B, Q
set credibility n-values people [-1]
% K7 L9 Q: a% A, ^( w* X8 t' l; Uget-color, _6 W; C6 v4 v- G9 v
+ N* K  D# D7 [. y2 L
end- V. ]: u, f! u, f9 R
3 t9 Q/ `9 @* M# T7 S9 C" S
to-report creat-credibility2 H3 q$ l/ R/ l8 ?
report n-values people [0.5]- V8 K0 E& ?3 U( q8 G6 p3 H
end0 K$ G/ v3 _( L) N2 C

# {: ^: |4 Q/ l( r6 r) Lto setup-plots
" C! w3 p* h4 v0 s: V3 `# S6 c$ x( W0 Z2 D
set xmax 30
" F& _; |. ^( P9 f+ t* K$ [; j2 _

* F) B! E( ]8 f; Lset ymax 1.0

! }, k+ A3 W; q3 K' g% ]- [0 c7 Q
) @% M; W3 l- q) [6 r7 [9 zclear-all-plots
: C7 M( j" E5 f8 c

1 K+ H* w6 H, i( e& e- Ysetup-plot1
: P% |) e" e& }' a, v0 K* {' k

- S+ q* ^: Y: p" s- H' f( b+ T4 \setup-plot2

1 z; N4 J/ }2 L7 f. f8 _" d- R0 A0 C; ]6 T
setup-plot3
: c+ U& c* ~( b" V
end
0 [3 `: s  I% d+ c: y2 ?/ x; a4 k5 E& y$ f+ Z7 g- Y& y: Q& s
;;run time procedures
" _) o% c! K! W6 x; M' ~7 ~1 F  ^& h2 j. o6 V: B3 v* _
to go3 |! s) f( f9 j
5 S9 B' A' ]9 A. S4 ]" h) O
ask turtles [do-business]
$ |5 R+ b# W1 N' y: ^) g$ K& F
end
8 Y( Q5 i( O0 K  ^
6 R. E  @& G9 ]5 q* h* \. Mto do-business 6 s" d8 r1 j, s5 V
0 ?; m: p2 L% k- j& D3 e5 B

) [/ m+ ?6 ^! r3 a0 ^rt random 360
5 p; z0 f5 v8 ?

, [% V" V$ k, ~; Y1 M$ R9 H4 m' m* ofd 1

" n) s& r/ B' W- L; o/ b0 G  K
7 T8 U$ v- C2 ~8 tifelse(other turtles-here != nobody)[
1 N, ^: R) `, Z. A$ h
5 M$ v( p, x/ u
set customer one-of other turtles-here

8 s# q& m* s" ]$ \# `9 G, B
4 I4 z: q  P9 g, g1 k  |, h;; set [customer] of customer myself

) `# `' U6 \; y: V. B) A
' v) n$ x% h2 Y: a# W# o, [set [trade-record-one] of self item (([who] of customer) - 1)- q$ W2 s2 ^' a) Y; L( T8 t
[trade-record-all]of self, H/ \$ @0 Q- p# `7 D
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 T8 _$ y# }1 ?9 I/ g% ?

0 T9 c8 W/ \# L. a! Pset [trade-record-one] of customer item (([who] of self) - 1)8 \( o+ c! V: b1 @
[trade-record-all]of customer
4 {9 ]1 a; Y1 g1 M% D' k

3 u9 d' J2 v! v  pset [trade-record-one-len] of self length [trade-record-one] of self
9 A& ]0 \4 K8 _4 T* m% U
2 j7 S* U% R/ C( S
set trade-record-current( list (timer) (random money-upper-limit))
# Y# w' [: b% j
3 ?9 _( k- D" }2 w
ask self [do-trust]
% _' }; a% Z, r2 m;;
先求ij的信任度
- |4 ~) G/ B! h' z  H8 u+ `
% s, |2 [3 `* L! E% ^8 A5 O2 Y; |if ([trust-ok] of self)5 c! d5 r- ?2 W) x
;;
根据ij的信任度来决定是否与j进行交易[
0 `1 ]! D% S. z2 K; B: l' p+ f% kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, X2 Q: j  M$ Y1 _5 c. V; B
5 R" v; n6 Y, c) n2 N# o0 f7 L[
$ J, m% h4 @0 j
5 ?! |/ R, A6 _+ F1 n3 `' F! |( r
do-trade
/ B* Y! n8 z) o5 X% a0 }; X

5 K0 D2 t  z7 Bupdate-credibility-ijl

, W  Q2 n2 Q+ B$ z" {8 \$ x9 s) h( B) P+ U- x
update-credibility-list1 x: k1 z5 g5 s- f4 `
) H: y- G' O% Q5 W. D* x+ a  s
& a" ^* X+ F2 _
update-global-reputation-list

' H+ c! t4 z; G' y0 u$ i
1 l" V" ^7 t8 a, @" |5 q; w& ]poll-class

+ l5 |6 e) K. E1 a% m6 c" r8 W1 Y/ B5 G7 W
get-color

6 I. q: D8 r6 P3 W1 P7 u6 E3 u( U# m
]]
, W8 l. a% Y! j1 G) P4 P. _) W  O( B6 a
;;
如果所得的信任度满足条件,则进行交易
, [3 W$ s+ Y+ O9 D6 a( m; f( W- K5 U& S, P2 V' i1 I& ]4 x6 K0 D" h  K& T
[
( }  @6 v5 O0 r/ B
* O4 U$ r! b6 C2 x
rt random 360
6 S1 L  c1 P& e$ m9 C% L$ U

( S7 U8 Q6 L8 ^' w0 lfd 1

- ]/ Z; ^$ L, E) m% s( h" ~  G# w$ n. b  ~( {: D9 |% @
]

7 F9 ?, g/ B% s8 @3 \- Q# W9 `' Z3 \& j$ x9 b0 ?* g, {9 }; A
end
4 Y0 Y0 j- X; Z# P- Z
6 v+ s5 d( _( _- \% E: ]; H
to do-trust 4 a; d/ f1 x; }! ~' ~1 G+ _6 k
set trust-ok False
9 g) }% _( m& |5 u
" n4 }" j; G1 j8 ~9 C) ?

- K5 ]9 v9 y2 ~1 P2 clet max-trade-times 0
: ^4 F" u. ~3 ]( F6 w0 Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: X+ O: h& e& j! N" C* L* A
let max-trade-money 0, U+ F9 M7 f6 D( s1 _
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* {( _1 M' Z; h$ G0 r0 q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  s' B7 \! d; v2 v" O- t/ k" j& x" o

! _7 R5 D4 g+ U. rget-global-proportion
% Y% @2 F, w2 `- s) ~let trust-value. f$ x* V9 T% g) b3 u) I
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)
- y/ ?2 K3 j4 M5 A9 T
if(trust-value > trade-trust-value)( F4 }! s4 G. A  q6 g+ G
[set trust-ok true]
" h1 E2 D- C" R5 a" Aend3 q1 d/ k/ a$ G3 ~- b0 O  u

2 c0 O- P( U" k( Cto get-global-proportion* R8 X; P1 O& d; O. ^
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 g' W/ \* ?8 F* d, b/ Y; ?
[set global-proportion 0]
$ B- _/ f& }0 o0 ~7 C[let i 0
$ {! S3 \' W% _* m, ]5 _let sum-money 03 A7 s- f4 V% \+ j; E! w
while[ i < people]8 F# o9 f" Q: m# t8 \" Q& u
[
* _) G+ |4 L* Lif( length (item i( D9 `' }6 q9 Y' ]: f
[trade-record-all] of customer) > 3 )

5 T4 w6 z' Z6 o) G: F0 y[
3 N1 \$ m( w, s6 r( O" c" h; Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))& ~6 e$ r8 n4 g& F% ?6 B
]
- r9 c; W9 L5 ~5 A]
. U) E$ c# x6 ?. J1 ilet j 0! w: C# }+ `0 O
let note 0
, f% M) j' l% V' g: C$ xwhile[ j < people]; A- B4 T2 D0 I
[
; r' [- K8 ]6 |  u$ O: H4 {# Oif( length (item i. v1 c- j# h( r9 ?
[trade-record-all] of customer) > 3 )
7 y4 L% J4 O* [7 `
[/ A( h- g5 L2 p3 ?3 W9 \3 B
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 \( o0 O& x2 y9 O; l$ c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 B) H. f% ^& D/ O! F% w; Z5 U
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 B3 a* t/ d/ G8 w1 e
]( R8 U; V+ I  C3 V$ H" e+ ^( p# \
]* E) T2 M# d% F% F+ A3 g
set global-proportion note" l+ A/ J. _9 ^! C* j# |
]
5 W* E2 y$ o  R$ y: K; M6 oend! e6 q* v) T1 H# A0 k( Q

. N: X6 J& O/ @to do-trade7 f3 K8 E. V2 [0 F. z6 T1 o$ B
;;
这个过程实际上是给双方作出评价的过程
$ t% m+ q3 o- z2 E& I9 q3 B3 k5 q! X2 Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. d3 z) y3 v% U& W8 G/ d+ yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 m3 r3 u4 }0 ^% X
set trade-record-current lput(timer) trade-record-current
4 ]. [$ E+ Y( m2 ?;;
评价时间
& {% [- s& t+ l+ kask myself [. p3 y9 _# i8 k) O
update-local-reputation1 e! b0 u: N! ]  L3 e" b
set trade-record-current lput([local-reputation] of myself) trade-record-current
' ~2 w9 C9 H' ?  H]
+ y  L( i! G/ S( k2 a2 B" cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. ]& S" }( ]& w) h5 a+ b. w
;;
将此次交易的记录加入到trade-record-one0 `5 H, v6 }+ d. ]/ d
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 y0 f3 }+ \2 D1 p/ f2 Y/ ~8 x7 D, klet note (item 2 trade-record-current )( e3 Z7 F  F% a% x
set trade-record-current3 o* `7 ^. Y& L
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 W& y) J1 y& ]6 Z/ J* ?set trade-record-current3 [, y% s% t6 k& b
(replace-item 3 trade-record-current note)
7 z' l/ ]! o% B/ P3 @% @3 _7 E  e: B3 H

/ x$ z% S; T1 ]& `& K: E3 ]ask customer [
8 n) C" G# e; J7 w% A) Y9 a0 q2 G- @update-local-reputation
  o) F# d3 R: X9 G- V7 xset trade-record-current
: s  \: C( U" O4 d, Q  v7 F(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 q' a2 n6 U+ N4 K) d& A# y
]
% t+ B7 r, y! s2 C
0 f; j% E+ s- ~- r! c* _, C

6 }( U6 Q/ n; y# e, C5 Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) Y) t" B" n! ?/ I0 x/ V
! V4 t# p% L, V
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 d  x  R, H' @  v6 I' y& ~
;;
将此次交易的记录加入到customertrade-record-all6 {2 @% W- G' M( X
end
2 N$ F' G4 e2 ]5 p/ Y" m7 e% p# ^* X5 X7 t& j
to update-local-reputation2 f& B: r/ U9 d
set [trade-record-one-len] of myself length [trade-record-one] of myself* X: P/ \) E0 }3 ?8 y  Z) O
9 H  [6 L* C4 u' Y/ w1 ]% ]" f6 ~

8 a+ B, n* l: y# ?;;if [trade-record-one-len] of myself > 3

5 l% i: X) R% {; n7 y6 l( `" o/ Xupdate-neighbor-total
2 Q  J7 Y9 L0 `;;
更新邻居节点的数目,在此进行
9 L2 D& T& s/ _' d! Glet i 3
7 A* v+ Q' s2 \0 i9 F1 elet sum-time 0
6 }$ J7 O9 o' |( J) jwhile[i < [trade-record-one-len] of myself]
4 l+ D8 Q& p  h; P& h' R. [. b[
; L0 M; t$ u: s$ ?9 Q: W# tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 S2 J3 H+ F6 I0 y# v5 Eset i4 m- X! {& W& r: L) d9 A3 w
( i + 1)

9 i% e% N# S6 v5 f3 ?+ X]
  c$ G) H9 j: L  G# A; Klet j 3
- |  @# l8 B% x- blet sum-money 0% R  j6 C9 T; M  a
while[j < [trade-record-one-len] of myself]  g% W1 E+ J$ f' X, {) E# C
[% C; ^, c7 O8 D
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)
" X! B. \% C1 V1 qset j& O: [. c7 `1 C+ B' p
( j + 1)

0 y1 Z, i0 y" k6 N: [/ S4 N]% |' e1 A; W% N& ~$ A* r9 c6 ?0 O& E6 B
let k 36 o. Q+ F3 O3 c, Z/ X% B9 b
let power 0, b5 J2 L# I8 O) q( i0 h* `
let local 09 e0 m- t1 K/ r- e' \5 V' D/ P! d- l
while [k <[trade-record-one-len] of myself]% _. B' z1 ^+ u2 w
[
/ w0 W( Y9 e6 F. b! z8 B& Yset 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) ( @" z! Z+ B! B4 w5 I8 F/ m. r, x1 q
set k (k + 1)
: m2 W7 L& L0 f  X" r1 ?" {7 v]* r8 J! |* c4 Q# s! s+ V/ V
set [local-reputation] of myself (local)! L& ^* \4 z! c: [5 C6 I1 T; s% Z
end
8 k4 J- c; u' T- ~+ I/ t9 J; ]8 `3 P4 u
to update-neighbor-total
* k/ [5 `5 T- T. ?0 q1 I% X9 f- T# A/ Y1 P5 R+ R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 }$ b; n6 g7 `
+ V+ Q* \% g0 r6 a/ C) p
5 o( t8 a* p: \* @: j1 C
end
8 u; i. w" _: m1 t5 _. o7 ~; s! b) T" P/ i# e9 }: }
to update-credibility-ijl
# ]2 G2 ~- w+ e- a5 K6 Z6 d7 y1 n" @* H4 y( D/ U
;;
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。
: F7 U5 z( c6 n& y7 v6 glet l 0
2 G" u5 N4 e- Dwhile[ l < people ]
, }  A0 k; b2 [7 b;;
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
4 Z2 P3 z# y& T[+ T4 A7 [* o5 y' {2 m! I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 d3 X3 j( H* a7 Cif (trade-record-one-j-l-len > 3)* `2 z- p% Z% T% I4 `9 _
[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' H' V$ Z' h! {5 i. G+ j  o! Y
let i 3
: k1 G4 p8 Q" A4 I& ~1 }- Glet sum-time 08 @4 R. f$ [$ @4 y+ q( G
while[i < trade-record-one-len]
, Y  W- L+ y) I* z# U[3 `% ^  T3 @5 z1 @$ }3 u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" k, N# I' @$ A6 J! V. `set i% W# Q) e9 S4 l; C' V1 }
( i + 1)

; S: [1 v- }6 f( P) c2 t]
- Z6 i, q6 o5 K+ D" elet credibility-i-j-l 06 q$ b6 P5 ]  t! e3 ?
;;i
评价(jjl的评价)
6 J9 v' H9 |) n6 V& L* C5 Vlet j 37 `5 t# `1 P# V$ w5 ?; j
let k 4
" K! \! X8 H' S& V; R/ h: s4 b2 Hwhile[j < trade-record-one-len]
( u( z& a+ `, ^9 z3 Q2 q) N, T[& L6 I8 S0 A) i2 @6 o9 d
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
* h( k- T" m6 d, A0 ~8 h' 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)4 F3 R3 ~% p- O$ j
set j
: e" A# S$ Y: \( ]2 d9 m4 T# ~( j + 1)
) w% C2 v2 ~# ^5 s. @8 T# ?
]6 Z  ^) y: e6 f0 i. U
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 ))) C, n& a( w! c; I5 n
% V; s9 s5 ]7 e& {( y( l

+ g  _3 v& i" W) n: J0 @! d2 _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" Z3 g0 c! B. L/ q' B$ s5 F;;
及时更新il的评价质量的评价2 O" i# ^7 P0 A* m
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 f+ b% M# T2 f8 b7 o( D
set l (l + 1)
, T5 c2 _7 y1 u8 ]8 U% |* l- u]# Z8 S% v* G* _0 z& k/ ]4 e+ V
end. n" o) M6 I+ p

8 U( m2 Z) T  X& Dto update-credibility-list2 E5 h" U6 w5 Z1 R2 K
let i 05 o! l/ M( x& e& @( Y# a7 L
while[i < people]2 ^6 L' _4 B3 `
[" `$ O2 U& R1 H3 F
let j 0
1 g5 m8 G: T8 Olet note 0+ ~& n% j, R3 f: B( L- Z2 `5 u! K
let k 0
( p4 k6 I% a7 [2 [5 p, M  K;;
计作出过评价的邻居节点的数目
& U9 L( L3 H/ E6 e5 \( Ewhile[j < people]; P% g% D; j) P8 |! t; z
[
. W0 U7 k$ P$ t! S# pif (item j( [credibility] of turtle (i + 1)) != -1)
) U. Y) K1 I' D( ~& M;;
判断是否给本turtle的评价质量做出过评价的节点: m  p1 H  @8 s' Q! r! R
[set note (note + item j ([credibility]of turtle (i + 1)))
4 W; X# k" \$ ?3 r; q+ Z$ f7 K;;*(exp (-(people - 2)))/(people - 2))]
* d% J( X: k. g  ~
set k (k + 1)1 p4 |* z$ v" r  E0 N! ?+ Z
]
+ R1 Z0 n' D, F) D3 E' g. oset j (j + 1): @4 A% z% E% v/ p6 B* b- [
]
0 h) b: d8 ^* N% q: Jset note (note *(exp (- (1 / k)))/ k)% Z# c& z) K' z& z* V
set credibility-list (replace-item i credibility-list note)' H' F2 j. B& e0 f# v
set i (i + 1)) p7 i( i9 @" m0 E6 Y
]
  x  z$ S2 M6 Q8 e% N: `5 z" lend
0 v% @: p& S, G' j; v3 e& t
5 L" V  E& |" I2 l2 \; fto update-global-reputation-list& A6 i# B# s+ [+ h: Q) ]
let j 0
! N7 ?; G& E( {! k$ }while[j < people]* i4 f% K0 W) n' z' k
[
# ], @, Y2 j6 W$ z7 M0 hlet new 0# H; A: h, x: g8 K6 ?5 p
;;
暂存新的一个全局声誉
' `7 Z% Z; R7 T( u" Flet i 0
; [+ T2 y& t: Y3 alet sum-money 0
8 R, L  P5 i/ Mlet credibility-money 05 u; }; i5 j  x! y
while [i < people]
" r* B( Y9 X" W2 W' d/ ]2 W[- |: }1 a/ a: g! p: O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 `0 P2 p% F7 G+ V3 _5 z  `( Wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 b. ]2 g, p  {& dset i (i + 1)
, S. j1 _: ^& d+ n! T; ^, i6 G]
+ k" d& E% R2 I: S5 Hlet k 03 U6 ~+ G9 \' d) A0 Z" Z6 z- x
let new1 0
7 w% l* r, @5 r7 u5 ^while [k < people]1 V7 r' H( c: _2 a
[
3 w# t* z8 K: _1 uset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money), c1 G3 N& b$ _2 n1 }2 V
set k (k + 1)/ \- S! v6 \) e- M9 f- o
]. @+ Q% P6 c) L. \6 T  Y3 A- }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" @" N" c* |" \3 }) Aset global-reputation-list (replace-item j global-reputation-list new)( ^/ T; ]7 O+ M/ m5 Q- }% W
set j (j + 1)) g1 [  a0 t; S8 }
]
( e. F3 V' G6 r+ zend
# Y% w/ ~* O1 Q- K1 f
) |' i5 X) ~! y8 v8 l9 h; D4 e
+ Q9 C1 m; P4 k7 r0 t4 i" a! Q  v! N* ]2 \6 Z& y
to get-color) |0 K& {% T8 }

- a6 h  V- }6 Q2 s5 rset color blue
: f  K6 P" T5 Z( J2 p
end
! F( _8 \& v1 u$ u4 C/ a  R+ O& ?4 ?6 q! `
to poll-class
$ Z6 g% f1 g$ ^4 {0 R( S& mend! f  R: F% }) ~- ~8 e, r1 q1 V0 Y7 p

- N$ ~. W3 s; ~to setup-plot16 f3 o) }3 Z8 z, }
  q2 X0 `1 C- Z) ^$ j
set-current-plot "Trends-of-Local-reputation"
- A( ?7 S: ?2 n) x+ _/ J

+ m- Q# S8 j+ {6 q7 x- d8 T' yset-plot-x-range 0 xmax
4 i( \6 V- Y5 I! J% Q% Q: q
/ j7 Q8 u: O- x" B& F$ B$ R. M1 D
set-plot-y-range 0.0 ymax
4 W3 O6 n. ?, t
end
0 T2 ?0 \/ E' i" m4 R1 w
" X' C) b9 T; ~; g/ Oto setup-plot2
* S% O  [  C$ `: v" \
/ f4 o; |8 H5 x. W! lset-current-plot "Trends-of-global-reputation"

2 [$ X, Z3 X' v1 y
/ ~1 w' k" R. q# H3 Y9 q" Cset-plot-x-range 0 xmax

0 Q0 T" l1 o, Y  J* I9 u
# F# t3 c; M6 M5 R& i; ]& Uset-plot-y-range 0.0 ymax

" H. F) ?( |7 k% l/ zend8 a+ k1 b1 R0 I7 |+ K3 v2 {1 \; u
! Z' R+ u! `7 j4 o- u
to setup-plot3
4 n0 n4 _6 J/ w7 H" L" x, z) z' l
  B& o* K! C! ]. mset-current-plot "Trends-of-credibility"

3 e* B/ E& ^. y6 P9 X7 A0 s6 ?9 t6 n7 C
set-plot-x-range 0 xmax

; Q" y3 y: I$ a) w/ c9 `2 L0 [' j* G: c6 s8 y% w  B( i
set-plot-y-range 0.0 ymax
* c6 e9 v# ]* D4 K- u( {( U
end
& ~/ ^8 S6 Y. j' ]8 d# p$ r1 Q* ^+ f, T1 w+ ~& M9 o3 g
to do-plots
- O4 d" g; F1 w% W4 Pset-current-plot "Trends-of-Local-reputation"6 M% N5 x, I% N  J. ^
set-current-plot-pen "Honest service"8 n5 j$ ?* s1 [1 M- e
end
4 o, B) v, f& K+ H: G5 {: |9 R. a) K! Z& E" R- E6 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.
' m& C; f# d# m
5 W6 i( f, L; a# D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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