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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:4 l6 f8 _0 m/ t1 b0 e& |
to do-business
! y" G: }, r5 i5 o% r3 y rt random 360  Q: h% Z$ M6 S9 d% z
fd 1  L7 f% g6 P/ `4 i
ifelse(other turtles-here != nobody)[
4 b+ Q6 }, `0 P' k( u  J6 j9 _   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.
( z* O8 j' G% a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . @- K% h3 y! I4 V5 L: _3 Y- ^
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 l" ~( t! r/ D* r3 I4 t/ S9 \   set [trade-record-one-len] of self length [trade-record-one] of self6 L: \- F- q1 P# i9 q* t+ H
   set trade-record-current( list (timer) (random money-upper-limit))
1 b# Z9 a$ J. g( G0 P1 O: }; ]* F  z* |7 T- r0 u
问题的提示如下:
5 |1 e4 k# w: U) A4 Q$ m( J- ^3 v' |; c7 J8 w3 q: i. \  c6 w. `3 y
error while turtle 50 running OF in procedure DO-BUSINESS6 [9 `( y* Z5 e- D- G9 {
  called by procedure GO
  v1 H2 H& ~2 x) j! z8 jOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 N9 a$ x' _- x
(halted running of go)0 \. b: Q( b; d" E5 N7 T6 n

7 t1 Z; r( i/ j- T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~~$ E& Z, m+ @" a, P# S7 |: T
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
2 \. g2 k7 K4 I, {9 yglobals[6 y* M: r6 ]2 F3 J& O: `, S
xmax
7 w# G  ~. T% n, T6 dymax4 p" s" F4 h$ J* }% j& v4 t
global-reputation-list# ^& t0 k/ c0 C/ S+ N
* r% w- _  {' F' g0 M
;;
每一个turtle的全局声誉都存在此LIST! @! i. S( z& U$ J( b
credibility-list
& S  `6 M3 C7 R0 ~) d( e;;
每一个turtle的评价可信度
/ D$ G- r; c" _' Z* }honest-service
, O8 d0 c' |+ punhonest-service! e! o1 L  Z  d# T6 A
oscillation
3 ], N3 R& H9 q, Y! ?2 ^rand-dynamic6 ~& u1 Q' @4 n$ Q
]
9 B1 C" d4 a6 w+ B2 f+ B2 t4 \1 R! C, l$ K, X" R0 Z0 A
turtles-own[
  X  ^" l  J  |! m/ a0 o$ N4 Ktrade-record-all4 m, h  d) z/ z  Q0 G8 `6 y, G
;;a list of lists,
trade-record-one组成
: B* E- {% F: k  Mtrade-record-one
3 W3 [! J: C  I4 {;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! n. h% D# S5 C; X2 D# ]1 Z) \3 T% r9 b$ p
;;[
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]]
# K5 D. f. h1 {2 `; _( P" Atrade-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]) r7 B9 K* J% ?/ o( z
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list3 C' z3 B& G" x% `, ?; `  x& V
neighbor-total  W% C. v  m1 _" v
;;
记录该turtle的邻居节点的数目3 j' S. x  D9 i) q  o, k
trade-time
8 J; \& _1 b6 e4 U& s;;
当前发生交易的turtle的交易时间5 W' |! x' B6 `# g
appraise-give
' q3 ?6 E! F" L. ^  C;;
当前发生交易时给出的评价
; S0 ~- g+ f, D3 E; pappraise-receive' a- Q, E& b# Z7 T
;;
当前发生交易时收到的评价
1 V: R  r1 R' ^appraise-time
$ X4 c5 o# R1 O* ?- V$ T;;
当前发生交易时的评价时间
' n) Q* w5 _6 s! Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- h, J0 P( m3 F, q) o( \& ?  btrade-times-total) }1 p0 f3 T3 ^: d9 e& k
;;
与当前turtle的交易总次数5 H. }, ^3 q0 k8 {# O+ R
trade-money-total
# K0 }! W& M/ N8 W5 `$ _;;
与当前turtle的交易总金额
6 D4 M4 F5 n: P% Ulocal-reputation5 a6 O- U- A. S0 U6 o. Y
global-reputation
( I, Y9 e* n+ O9 Z. dcredibility+ \8 E7 \( {7 N4 C$ s9 l
;;
评价可信度,每次交易后都需要更新8 S& {* i; F+ ^& S# _0 f) |, |
credibility-all1 n3 H7 m/ }4 S( G
;;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
+ ?  ^/ |( `- E
# y4 P# r) g6 C& _5 e;;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0.59 U3 ^: T- b- m7 B8 \
credibility-one$ U3 L4 ]7 ?" y+ y' g$ @* M
;;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+ E2 ]5 v5 A+ @2 J, r: V$ w7 F8 u+ Q. N
global-proportion; v6 I; _* k/ S
customer
; r6 X# n/ r1 f7 h2 n% p; mcustomer-no9 {4 z; W" ~4 b" O# R( m9 b
trust-ok7 L3 T4 g7 q" D" D( ~3 E
trade-record-one-len;;trade-record-one的长度
: b7 T! a& {; H( ]9 [4 j" j1 F]
8 u" r) s# F( e% k9 o
; }  Q: J: T5 i! t) z;;setup procedure1 x  Y3 Z2 G$ e( u

( i+ k1 z0 G& G8 U" K( fto setup
8 U1 v, C; d" ?9 B/ B! T( t  t4 j6 I$ m1 S, B1 k
ca

! a( \7 H' w, a, `, u; d% u9 N7 d3 F* i  o; w4 j' ^, _
initialize-settings

+ u% Z2 P3 C6 d  U: W, i
7 d  @& N$ |' ^$ H! B/ `crt people [setup-turtles]

7 ~* d7 v: I( ?! G' d9 W- [/ p
. L/ V4 }- S8 j3 wreset-timer

2 J5 }& G( e, Z' U  e7 p
# o( \  n/ F0 s" l, qpoll-class

9 E. F. h7 o5 W5 E$ m3 C) j/ |  T8 j9 z
setup-plots
: x: e4 e8 z. ~; L
; k, V- W6 j: E7 u
do-plots
) _) z5 q9 S/ ~# X' v
end3 ?8 Z1 S, }; R: A

4 O! v0 ^( G7 eto initialize-settings" f* P+ k1 N( u; c% W) Q! f

% d/ y4 j3 l9 V9 ?/ k4 }. Uset global-reputation-list []
0 u! f$ c7 v* u

4 x" l* k! w( U  O; vset credibility-list n-values people [0.5]
) p; w/ a. o7 s
0 U# M3 F7 L- j
set honest-service 0
+ U/ {8 f- X- f& H2 V: T" V

! e5 t) x; N9 T2 o% L# F& Zset unhonest-service 0
5 q- k: o7 O, k2 ^6 @
3 M* d! L# y1 Z* e! {9 X! z% w
set oscillation 0
7 I3 H( S+ Z5 e% T! D* I

5 d1 }2 O( r, j) \set rand-dynamic 0
$ p' ]$ h  P0 c& W2 [' S% O
end3 e3 C0 x1 i+ s( H5 F4 ~
4 g$ }& b! y9 N
to setup-turtles . L# S/ \$ U1 x4 R
set shape "person"9 t) l, @  V. i, N
setxy random-xcor random-ycor
' E  ]# U" j) Kset trade-record-one []; G7 {/ ^0 x' w; ^

0 a; ]% o2 n9 R9 d0 Q  rset trade-record-all n-values people [(list (? + 1) 0 0)] % d! _) c$ X1 `: t3 t, }+ Y. v
$ y6 v4 ]/ Y3 O2 l( J  g% j
set trade-record-current []1 p: c( k" Q+ t6 f* [4 D1 ~3 M
set credibility-receive []
& \2 O& r, K+ K2 nset local-reputation 0.5
- z3 F8 I* k4 @/ I1 Xset neighbor-total 0
2 p, X/ w' H4 @8 l! g) t: vset trade-times-total 0
& K' e+ i) }& ]6 U1 Nset trade-money-total 0
- [! d$ @/ h7 T3 qset customer nobody
$ q; D4 H: U, X% M% yset credibility-all n-values people [creat-credibility]$ ?$ o- r4 {$ Y" \
set credibility n-values people [-1]
3 c4 T  H3 ]" g) Sget-color
0 u1 ]2 G6 h4 p4 x# a: \
$ \( C% w8 }8 ?& z" n+ F, z
end
9 u% E- b. q2 L; U! m" \, `& e! G( L7 v% K, d
to-report creat-credibility
) H0 J8 E7 F) s% i" ireport n-values people [0.5]
+ N( f: d% ^+ d& t9 o: }end
$ s7 a6 \! Z# Q+ z2 s
( h' R+ V2 M  H0 \  s# ?( ^5 Lto setup-plots
% a) N7 _# E8 K1 I5 d; n' T" X% T  `3 g5 ]
set xmax 30

$ _) J( W1 X! w4 W% f  \; G: s( j' d: u* y0 i
set ymax 1.0
: T" A2 ^6 O6 k+ ^! E. K
# V# o- ]1 L# s
clear-all-plots
1 v0 N3 s4 [/ Q$ K! K$ n, n9 `

+ I' N1 ~# s8 r, @9 }4 F) j; `% isetup-plot1

+ e  N! b1 m3 j; q  }7 D! }" v9 x! z- R& }& h# {! r, n
setup-plot2

% [: ]+ G5 X  x. @1 \; f. P+ F& f" ?
setup-plot3

. S! O8 G4 }5 V! \# K6 c1 Xend
% |; ]' q+ i7 d, l+ F. ^+ {
  M; q; e: }+ n, X; y9 l;;run time procedures
$ B$ V, r. |  J$ |/ W8 N9 r
1 B: P; C! x0 e( ]3 M! ?to go
! Q5 t2 U  w7 c0 B$ p( q6 E9 b0 _+ Z% T( Q  W3 B
ask turtles [do-business]

& h# t' a0 \% ^end
" B) c5 T8 {/ A. x0 @7 Q8 V. m8 _- S3 T% I+ r* s' p0 Y8 P  f$ y" _% {
to do-business ! O% `- Z  w) W1 b' r3 l4 I$ B
$ {; u6 R8 x; w/ B
( P+ s( R9 H/ E' m+ u/ q
rt random 360
9 p5 @0 C0 Y6 R9 h: g5 S/ A! ^
' U% d* t$ O1 m( r: _
fd 1
7 F8 |3 X! `4 a: Z2 i- j

9 V" S- j$ b+ v+ V: o7 Vifelse(other turtles-here != nobody)[

& |8 M( r. j& d9 l$ z! h0 r% y- }& A6 j7 G3 i' ]& {% N$ n) F
set customer one-of other turtles-here
; X- m2 F/ U/ N- L9 g
/ W. G1 a% J4 Z8 N- x
;; set [customer] of customer myself
. [0 H  L; B4 d/ p
9 I$ U4 X8 s9 ]+ s* V  w
set [trade-record-one] of self item (([who] of customer) - 1)6 m3 @% l) W0 c3 |% \
[trade-record-all]of self
7 Z! B3 `8 ]7 L5 K3 c: f;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ U% A" @; M" \4 m8 f5 x0 l6 z% v4 q% t
set [trade-record-one] of customer item (([who] of self) - 1)
! P' \" k0 j6 I( J9 K[trade-record-all]of customer

* m; V. c% H, \  u! L; D( |3 d3 c: ]2 p
set [trade-record-one-len] of self length [trade-record-one] of self

& Y, `/ j& d' z9 h0 D5 n0 E5 O, h) k* U. b' f* B
set trade-record-current( list (timer) (random money-upper-limit))

+ c3 p' t: C/ |4 s& s- ]* Q5 b" |1 v6 @4 F
ask self [do-trust]: \- k3 m# T( A8 C& i2 \
;;
先求ij的信任度
) @  I" N5 X2 ]( P4 O' t+ }6 z; T) I7 v! g& S6 `: t
if ([trust-ok] of self)9 X6 s) \; t7 I$ _
;;
根据ij的信任度来决定是否与j进行交易[2 z- x$ z& s% r( @  D1 K) \
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 u& o5 d3 M7 C6 Y  J2 H

! J8 y4 Z" ?, d' N/ Y. N[
4 Z! v6 t& T# l% t  N5 ~

7 h+ i/ j+ {0 ?6 Bdo-trade

4 p: D) V2 `! d4 O
, q+ u3 q0 h- c1 \$ m9 Eupdate-credibility-ijl
9 w' t& Q* E' U6 E

" e& y% B  @  f$ a+ R- e: ?9 lupdate-credibility-list
) l9 J2 `+ A; K5 r9 O' y: i& A: ^
6 R& u- L/ u: D# b

' ^4 |2 z6 m1 r% Tupdate-global-reputation-list
& E' B* w- U& i

# m4 N' n3 S2 ppoll-class

* {0 a* [  K! ]4 u( F& m& @+ A8 b
2 P4 Y+ O- \4 j# Z$ M% Sget-color

- n9 n% u1 v8 _( s4 ]0 v* i8 T5 N3 g- d" i: r  j
]]
+ b; C4 ^- W' [; n0 q: O* W: J$ Y& ?0 v) x
;;
如果所得的信任度满足条件,则进行交易8 N7 b! I# a/ J0 N

; A: x0 ?7 g0 J2 B[

& e: _5 S' c2 S6 Q! q# R# i
! F6 p, H3 A9 z. ]+ Z7 grt random 360

4 I3 s6 y- s; U
' ~% v; t2 @- H' I* o; x) Efd 1
) `7 v! t8 p# ^. f! n$ ^# E

  c: O' H( g+ ~$ a" g* ~8 r  j]

3 O) c* w5 f' }& `% i' L  C) X- g- F$ G, S" ~$ e2 ^
end

: r' ?7 s( Y3 R7 Z0 }4 \0 k2 X% M' p+ w$ j& P+ [
to do-trust
4 p+ n+ e( [9 T0 Uset trust-ok False
( v! h+ X% ?4 M9 }8 G
; [( B' t, e6 |6 x4 D; c  L

  ~6 i1 v" p4 F  J1 nlet max-trade-times 02 |0 W2 |& M( Z; l1 ?" r' l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& B; s4 X/ \8 c1 ?let max-trade-money 0" z' i% v% \) Y( p( u9 V* ]7 W
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ Z# e0 ?+ A) k9 Y" I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 W5 D$ Y( [, {! k+ B

& Q+ R( V$ H3 [7 g
4 ?  `1 h8 `  N
get-global-proportion6 h, s% M1 I# k, j! M9 j
let trust-value
* d4 S7 T4 c+ K+ G2 j1 o  Blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

4 y- {* V; l) i; A4 sif(trust-value > trade-trust-value)
1 m' s8 d! L/ Q2 i. G4 d/ j) J# x[set trust-ok true]  I- t# [4 H  M
end6 C9 r* z; S$ L6 _9 g) l3 [

6 ^7 s! s9 C6 z. Nto get-global-proportion/ l7 e  o0 Q  L' R* m1 Z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 \% I! j2 `: P" x1 K
[set global-proportion 0], Z/ a& V& |; }1 p& q
[let i 0( I+ J0 T+ l( H) }  |
let sum-money 0
: E% [' i6 D4 l0 Ywhile[ i < people]! `2 T/ t% _$ u$ c6 p$ j
[
4 a* B: s% J, k- a2 |5 Hif( length (item i% b: v* }/ c' Y+ }: i! O
[trade-record-all] of customer) > 3 )

+ D6 ~9 d* Z7 }" C% \[
, ^1 g0 |' N, y1 d( T% D6 {set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 K$ c7 c6 g) o7 z7 n* i
]9 O7 P: r) @% ?6 S$ g7 R
]
: h# g4 C- w7 c* Zlet j 0
3 h4 A& y1 t. h* o) j$ b$ Wlet note 0# \' J, r% F2 v; P
while[ j < people]6 `) q; y9 w0 B5 O3 f4 z/ D
[# y; f+ d: o/ [! |4 a( E  m
if( length (item i7 k0 D3 M, q/ w5 ^
[trade-record-all] of customer) > 3 )

* r4 P% ?' T9 W/ E: _: v3 ?[
+ T1 ^, A& q. \! j2 R9 Cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 b9 p9 i! A( {& H" F2 D[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# u4 I  G& `8 p+ H, R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 Q( {- H& V1 o6 J  t% w: T/ w
]5 g2 f" V1 m% ]! k8 o/ k4 M4 Z
]
+ B* L. Z7 l4 f. r0 q5 J. `set global-proportion note- O; h: }# \4 s8 v5 H5 X, [! s
]& p" R: T1 O" v" J+ {
end
. k; s' s  U! r- m5 k. W) v
9 z& R4 i$ I4 m" ^to do-trade3 A0 _) Q: L/ v! D
;;
这个过程实际上是给双方作出评价的过程
% S; `$ H: M$ _* zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% l( y  R8 H: ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- s  H3 O4 x; R& {! ^5 Tset trade-record-current lput(timer) trade-record-current
4 {) }; F$ ?4 K' }- f2 k1 y; J7 {7 h;;
评价时间& \/ K1 A* W! j! A3 e9 K
ask myself [) a  h* U4 S3 n; Q. t
update-local-reputation/ C1 K5 F0 l$ u7 t4 A
set trade-record-current lput([local-reputation] of myself) trade-record-current7 _$ p$ S* a. C6 S  S3 F
]
9 B' L8 L' Q; [$ G7 _% iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% g6 Y: l( U( Y8 b: x2 ?4 L
;;
将此次交易的记录加入到trade-record-one- ]( k5 S( F( g& ^/ i) T+ ~5 e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ Y  Z, D* }. Y* Y! |( l1 i
let note (item 2 trade-record-current )4 E; `0 f! ?2 d6 @- V
set trade-record-current
6 @' a( }- v6 H$ K) v(replace-item 2 trade-record-current (item 3 trade-record-current))
# x% y0 e8 T, i" V" F/ p
set trade-record-current- G/ A$ l/ L$ B6 f' @/ W
(replace-item 3 trade-record-current note)
! H) g6 G  ]4 D! o8 I
7 _5 p. V2 m) F- K$ I' ]; n

  h4 A7 v; j  Y( Pask customer [' h" S7 F4 _9 H1 ?( b
update-local-reputation- P1 ]9 b5 |% v
set trade-record-current
, A- q8 I/ v' @6 u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! I& ?+ I- Y3 }
]' H4 t) I4 q) f# s

  o4 p% O6 Y# l" [
0 o+ a, @  i8 D) @, i; p! W
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 }: m! g9 C8 x
' H* t6 O  X8 D; k
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, F$ Z! k7 {! b" ]/ }5 M  \; F;;
将此次交易的记录加入到customertrade-record-all
+ t' T' D- F% X6 l1 e; b. Xend
6 J7 z1 G6 S$ z; l& U8 \2 @
: w6 F4 y" c4 n; b, Vto update-local-reputation
2 U7 f6 z- G2 V9 k1 A+ Yset [trade-record-one-len] of myself length [trade-record-one] of myself: G' T9 ?9 `4 ~2 E' e

) Z* _# X6 _/ G% t; x- q0 ?8 k  K: N" U9 z
;;if [trade-record-one-len] of myself > 3

5 }1 E7 k) A- a3 s# z: uupdate-neighbor-total
$ q2 |+ j, m- ]' Z3 o# N;;
更新邻居节点的数目,在此进行
# K& s& H  O% G- v$ |$ f  \+ plet i 3
: j- N6 H& ]4 Q/ E' zlet sum-time 0
% q' K; k9 ], l' g$ i9 Mwhile[i < [trade-record-one-len] of myself]
. b& U) L7 E2 S2 V& }' E& X[
$ ~7 D' }5 m0 z- |) P& Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 b- e1 g9 _) ]5 u: y/ N$ f% z
set i; H9 L* L7 F3 b& @$ X, v$ x3 U2 `
( i + 1)

. ~  X( p% a1 e" V  T: Z  j  M]
5 B$ ^  w- {' Y% ]9 @let j 3; m* N: z+ |: W+ ^' b& v( H
let sum-money 0
+ J2 a& O9 Z, ]/ @$ bwhile[j < [trade-record-one-len] of myself]
( f2 ~* ]8 x; C2 n/ U, m+ \[
, D0 l5 P: t* i4 qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 ?; {1 o6 }% g: h: v9 Z5 }
set j4 N: k2 i7 w( D# J' L$ X
( j + 1)
* _% }: }. ]. d
]3 n. |- N% b( ?, M1 e6 J4 k: {
let k 38 Q% Q# D, S" _' U
let power 09 @; p& I" ?' T9 x4 c
let local 0
7 o+ D) k8 b- w% r: q5 N, S" \while [k <[trade-record-one-len] of myself]1 e8 \/ a8 ?4 n4 \3 ?
[* v. U: |) N8 Q$ L( 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) 8 s* `& D9 E# |' S% }. c! @8 K
set k (k + 1)& a& T6 [3 M. X& c2 d
]
! P, Z: z# T+ Yset [local-reputation] of myself (local)0 g5 N  ^% p- `0 D1 T
end
( i$ o6 U/ G, n7 S' T8 N( k( q  Y  T, D; B/ y! ]' X: W
to update-neighbor-total
2 ?" b! V! e* O( N/ L$ G( d( `/ @" v7 k$ E2 u+ y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 B% |& q3 k  \" Q$ x; q; _4 n, {: G6 p8 v$ @

; P. M. C( U8 ?! M  q% d0 J7 yend1 X) m- X# P/ E  w( G0 O6 [
2 n" l: |$ ^) s5 f3 r8 @- \
to update-credibility-ijl 9 ]4 G% h) }4 E
* s2 B1 t6 ]2 J4 K2 C
;;
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。4 P5 p1 p" P1 M, Z6 `$ o
let l 0
. M6 I/ W. O9 R+ c5 D' Twhile[ l < people ]. X4 d+ I8 \/ h$ {
;;
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* h" Y+ @& a$ q
[" F" Y8 j/ f/ Y" G9 c; k2 Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), m+ `# n! ]. U5 |) {6 R5 _
if (trade-record-one-j-l-len > 3)
9 L" D" V# W+ b7 b* N[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
" d+ t' f7 u5 B  L: x( @let i 3
6 ]4 V. F" U% Z8 {3 S: Jlet sum-time 09 t9 g; {% e+ A( G6 [! e& z. Z
while[i < trade-record-one-len]
$ k/ B& N/ D+ `/ [  ?[9 K( S8 g+ U& @0 R7 V1 v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). ]) {% _- M) u9 H9 V" O$ {9 n. x
set i0 E: m* ~& |8 k
( i + 1)
! t& z& ~2 b0 @9 Q. o' [8 I
]6 f2 D' p) B: e4 r
let credibility-i-j-l 0
) Z% b+ e5 B8 W6 y;;i
评价(jjl的评价)3 F% b% S( i- }" m3 s, q
let j 3& }5 C/ p6 O- _9 h6 f! l
let k 4
. f% q2 B- n. W) D) Q: mwhile[j < trade-record-one-len]- L# E& o/ K# O0 L
[
4 f8 m! t! P% J& T0 pwhile [((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1 g. j7 f( ]4 [8 z/ q
set 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)5 Z' E8 o7 l3 T% W" J0 G
set j2 M3 _/ J" ]" p7 D8 e7 N
( j + 1)

- V/ ]4 T: f& |( U]
7 ^1 X7 V6 U, _; v9 l( k, xset [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 ))( r+ U: |: u: q3 L7 L( I1 B
: D  K* \; r1 z5 _, t
- p: F8 @7 F- W$ U( T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  }! l  j! B+ \" w: x# x8 x$ J7 {;;
及时更新il的评价质量的评价% Q) s$ W% y: y9 s7 ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) r* l- T7 ~: bset l (l + 1)7 o: \+ D6 Q& e  V) N. \* b% }) a
]
9 A% V! N: T+ }9 c8 \0 O' l6 t4 }# Oend
, I/ `- b3 I' |$ m
/ S9 S  M7 l" a8 i/ q* Wto update-credibility-list
8 H& Q, H3 O( ?, S3 d9 S8 Ilet i 0
5 v  c/ `+ ~  a1 gwhile[i < people]: L4 Q  h. i% y. ~; l1 o
[5 K3 \' ]0 G1 ~  ^- n
let j 0' u$ u' I' e6 X3 e  O" r- L! T
let note 0
" N5 j$ H- G. r) ?4 e4 D  W. jlet k 0
( Q# q+ [7 x3 E& y;;
计作出过评价的邻居节点的数目; b1 a5 i0 b% w- f, _0 k7 l
while[j < people]
$ p& S  J: O) c9 T[
6 y' X) O& h) z0 W1 d  X& \if (item j( [credibility] of turtle (i + 1)) != -1)' X) L' [1 H2 g' y" s
;;
判断是否给本turtle的评价质量做出过评价的节点& t3 k- d6 j. J# Z  M9 d' V, l4 F
[set note (note + item j ([credibility]of turtle (i + 1)))4 O4 _! I7 E5 }
;;*(exp (-(people - 2)))/(people - 2))]
6 f$ N  [# N. m8 q; A% p
set k (k + 1)
4 \' C/ v4 i3 G]
# N$ {# K5 O- s* T3 e% b' e2 d% I0 Lset j (j + 1)
! d5 u5 V* j# }) L]) K; r! \$ `2 c+ l0 f& a
set note (note *(exp (- (1 / k)))/ k)
) T! z4 l2 J$ ]' ?! v- l: z7 b" z5 Qset credibility-list (replace-item i credibility-list note)& x3 A% b6 N, B; r  s
set i (i + 1)4 ?7 O: O+ U  B: {4 w* @' I
]6 [' B, t2 H2 Y: b7 @9 }- g9 E0 U! ^3 k
end, ^$ k: U" e/ q& ^0 @' P0 L# X
% R7 m/ l' ^. j. T
to update-global-reputation-list
$ O1 i7 u4 o; ]/ W3 \* llet j 0
' M7 q% N6 d6 ^1 q, k. hwhile[j < people]9 B: @9 c. K' M, [
[
6 h/ }  |5 R' `3 t6 ~- H8 Klet new 0
( L2 {& w: _( C  s! P4 U* y% ?;;
暂存新的一个全局声誉
* I* |# ~8 e) R) r. rlet i 0
) O0 a( N" N" r* G8 M: klet sum-money 04 ~8 r& E+ p0 k% g3 @
let credibility-money 0
/ I' N( z* l1 i2 ~. q3 o0 dwhile [i < people]/ j3 x! B/ h2 z1 I; m
[) y2 p( p6 \5 N( L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' P* o6 e7 p9 nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% \" `* V# H6 V" L) `4 r" b6 s9 _set i (i + 1)
( x( m, d/ t, _' r. K9 D- s]4 t# J9 U# b' M  x) \
let k 0
$ s; b. B/ O7 l! U8 }9 Elet new1 0
. P( ]9 B! s  [, V) s5 U. ]while [k < people]$ o5 o/ t- B, a7 d. W, L0 @( j
[
; @- ]$ l1 b  \( l  I" l. }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)8 f4 c$ W* |; O5 p: v! T
set k (k + 1)
1 t$ Y: h  y; A1 f# {; M' E' h/ V& ?]
' {/ K: n) ?) w1 N6 _3 `set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 v. T1 \+ I2 K/ v+ f4 z( |
set global-reputation-list (replace-item j global-reputation-list new)
# f6 P0 a: e, y4 @8 W) `set j (j + 1)
/ v$ {9 I4 R$ U$ m]
+ I) W) _4 z  J2 Kend
( }1 ~, l) k% R3 o/ _; ?0 }% p6 f9 b! p, O  N

( J+ Q4 ~' Z5 t1 W' }
& E% M8 @$ X8 x6 P3 z: B6 I! H+ }to get-color
& V4 `6 B! T0 f5 s
% x/ j: m0 [& f% Z0 dset color blue

1 @  K9 Z4 R8 n# [1 eend, a: E5 U) Q6 H9 x1 f

9 Q0 H) d+ D  O+ D! y) hto poll-class( B% M2 d/ ]/ B. T
end
0 V9 \2 [, N4 Z8 j* q, c* r% S6 N# A% H. E, M6 I
to setup-plot1
9 R: v' y6 K( S' d. J8 a
" J0 X) C4 A5 ]set-current-plot "Trends-of-Local-reputation"

/ h3 R# H5 e% {+ b/ o, R
2 Y! R2 [+ {* k% Q' X" d' Uset-plot-x-range 0 xmax
+ {) \2 x9 |. n  `" d2 P, G0 ^; q

5 d; t* }- ?3 V8 uset-plot-y-range 0.0 ymax
4 r) P' B' d! a: V1 ^0 x+ }9 f
end
9 a- Y% \8 Z) K( o3 k
( p9 w$ D% @9 B- y- D' r6 Nto setup-plot2
/ L1 l) x- `" T- \5 b! T8 Q3 ]% N3 _8 {, [* a$ X  O8 O% L: o
set-current-plot "Trends-of-global-reputation"

3 N- B/ A/ ~0 z/ s: d
3 x: G, C; A, d7 c0 e4 X1 R3 tset-plot-x-range 0 xmax

9 ~6 p+ N6 a$ L0 i# W+ U& N; L' i( g7 O6 U# G: R- [
set-plot-y-range 0.0 ymax

& G' ^0 e9 @  I: ]+ b0 V& qend7 n: f, k; U3 A  p

0 ~! R' A3 ?- ^to setup-plot3
( E, D* R0 v6 i- X/ ?
/ S. l+ N( b, b8 g! Q/ Cset-current-plot "Trends-of-credibility"

" H3 }, A& p3 f& e5 a) x4 j& z/ g
: `5 w( S# P+ y- q4 G' e8 Kset-plot-x-range 0 xmax
, ^- l- r4 W, C7 \
+ z" q9 P" m1 S
set-plot-y-range 0.0 ymax
( Z# [% x+ ]  S$ s' E0 P
end7 r: l+ K+ r7 q- K4 u1 a

  k- V% X! l* k' N1 Hto do-plots
) }; c* q: _. a/ q& Wset-current-plot "Trends-of-Local-reputation"
2 t, N+ }2 H) n* ~set-current-plot-pen "Honest service"0 D# a! Y+ Q) W% r# J9 i
end
$ M( B9 A" `) g" k! P+ ~/ Y* R6 c& P& ?
[ 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 Y. `, u$ J  C# G$ r

1 M- m2 O9 V: \1 K6 q% M  ?' O: w6 \) g这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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