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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:
+ C. ]2 z6 e' W- Vto do-business
" L7 ?- f& N' s  E1 ` rt random 3603 ]1 R8 M1 B9 @
fd 1
* n  M/ @* ?  q* N; C ifelse(other turtles-here != nobody)[
% w6 z8 h$ ]7 y   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.
6 `7 _: }2 J& p7 b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % O* M" }5 [0 z" P# C$ O
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 C' \+ ]4 B; i6 `& c0 f. b! w   set [trade-record-one-len] of self length [trade-record-one] of self; K5 d1 e% ~/ L' t5 X
   set trade-record-current( list (timer) (random money-upper-limit))
7 a" ]5 |+ R1 ]% U0 v% P, ?; o
& B9 i9 B7 B8 n  [. ~6 L; c( c2 \问题的提示如下:. A/ Z8 S0 K( E; `7 X3 ?

# {* s2 `+ u! L1 b4 y- O0 uerror while turtle 50 running OF in procedure DO-BUSINESS2 I6 O4 O. B1 I  S! w8 W
  called by procedure GO: }+ t1 Z! F* l, d$ ^+ S. B, }
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 U$ N. r* U4 I6 W/ d
(halted running of go)
  h( i- ?- u: ~; v$ |9 a# I9 I9 M4 h5 M$ [# K9 P7 m2 x; [: h
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~~
; j+ d$ P" {4 ^8 w2 f4 P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; ~. G0 S* J1 {# Z
globals[
4 r! d; \' {8 L7 O- F) Mxmax7 ^5 D5 w; _' m2 r' I6 I. }5 P: q
ymax
) [8 B, G: V8 |4 W( d' I8 m1 Qglobal-reputation-list
) Q7 i0 L- s1 [- y& L: @' {4 ]" ^; N
;;
每一个turtle的全局声誉都存在此LIST
+ z. z& z2 p, j7 q/ xcredibility-list& `  ]0 r7 }# w( K. e
;;
每一个turtle的评价可信度
! O$ x% [, c) [7 p3 s  n( S3 T7 {honest-service
1 \: b9 g, z- G8 U+ Kunhonest-service7 q2 W5 F2 Q* G* d
oscillation/ o1 d4 u+ A- y9 v
rand-dynamic
0 ]" n' g+ U5 t8 }5 W]4 j$ }/ t6 D. H- l; w7 e

/ {" d6 r( Y. fturtles-own[* @) B' s* c  M  M
trade-record-all2 a/ b; r  c; T' {+ {3 ]
;;a list of lists,
trade-record-one组成
2 y* `8 C. ?2 y4 q. V8 Ytrade-record-one3 U+ M# i9 B8 `7 J/ }
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 B$ E! n3 w- Q& o! D
4 v2 }" z' F4 N8 @" K;;[
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]]: U1 a1 [, d( |0 c! s! }# x( j7 S9 F0 |7 M
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]6 [" h" ~$ ~- D9 [, C2 E
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list
- x3 ~+ a% y2 L8 u6 o* G% Cneighbor-total" L2 h, B+ }' h# |* k# Y2 T0 ^
;;
记录该turtle的邻居节点的数目) @% r0 y4 x0 |1 Q3 H
trade-time8 L& B8 F7 ~. L
;;
当前发生交易的turtle的交易时间' V) x0 J( ^. C2 o6 E3 v8 a+ ]
appraise-give
. ?( ]' W5 E  Y! G! \( s;;
当前发生交易时给出的评价
# R5 P; a1 `8 d: f, _# k) q9 p. Fappraise-receive4 i* e7 S/ ~3 G3 O
;;
当前发生交易时收到的评价
9 R% o5 O4 i( T2 Uappraise-time
* I6 V$ [7 C+ |8 u& Q8 U;;
当前发生交易时的评价时间
8 N; ]: j2 x4 Z, p# o3 t6 alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  ]5 P. i' U% e1 ?( u* w9 ]
trade-times-total
4 C  z4 B0 @+ P7 J7 C+ X;;
与当前turtle的交易总次数
' [# h7 R: G+ _: ~( O% Xtrade-money-total& z" W# [5 P) T9 @* |" \
;;
与当前turtle的交易总金额, p- D) i' S9 \! d5 ]1 |  V% h  ~
local-reputation. }' O% H0 H: C6 K5 u
global-reputation
6 h  W9 W' r) ]- w/ `' r# A# ]credibility
# {+ {* j% k/ y7 Z% o% z0 Y;;
评价可信度,每次交易后都需要更新
9 s) A" {$ E( I* }credibility-all5 B5 ~- _7 K- j8 v; i
;;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8 \( ?& S5 t% ~. l+ ^1 M+ M! Q
, V0 D; l& q1 y7 G; C
;;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) y; |0 q2 e& H: v+ N) ~' F0 t% ?
credibility-one
3 c+ L* ]( f2 x3 k;;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  u# C. m4 t2 Z" s: i, B% r  U
global-proportion& U. R( P. i5 m" P1 v
customer
( G4 {5 g8 ?3 m- W" L9 rcustomer-no% ~( v! S: q0 L) O! G. a9 `% k
trust-ok$ A- j$ v  A8 ]' K* @; M5 A
trade-record-one-len;;trade-record-one的长度
* P7 W* Q' s9 d]
+ a7 n1 T  B( t# T  |* M9 p% @3 W7 m0 r% A
;;setup procedure; r2 K8 A4 r: Q

8 [" x: S$ Y) x( I( h! K. J; Nto setup
. S) B6 ~: r  N8 _6 z3 e
6 {4 \5 b8 g2 E1 z7 sca
: q$ w) _, P0 E, b9 A

8 H- W2 y& d" ~! x" minitialize-settings

$ y3 _4 A  a  Y! d+ I4 ]; F: O' p
& F& D' X5 P9 Y0 ~$ vcrt people [setup-turtles]
! F9 i7 e' F3 L- F; ?
$ J4 ~7 y% W! k, e# o, }6 i
reset-timer
( s& ^9 d+ f- u8 M

8 w9 G/ O) f  \/ V7 J1 w# u- z# rpoll-class
5 ?5 p/ p& y- d% P
0 c; |. E  u0 G8 I" B- L
setup-plots

9 h0 z# W( b9 g2 n+ T" N  t  N& T" p* c: r
do-plots

7 V' `' {2 K) v- W# Rend% o. @3 r, @3 k$ L( G1 e

1 p: Z, {% |* j, T+ bto initialize-settings
' G$ t  o0 @8 x. ~, L
5 l0 b- n) n. C6 T7 J3 vset global-reputation-list []

8 A. X8 S( |7 z+ _3 |. ?& l. @$ X. e8 i# U& G4 P
set credibility-list n-values people [0.5]
5 i; l% G+ v9 j) x

8 V/ m* H& J8 h3 w) x( fset honest-service 0

% s1 k: m; j8 N) C. g. f, }
: J3 i9 N5 b/ C1 ~7 ?' J8 `set unhonest-service 0
* f; J; G" B0 l; K: N5 N% j4 \
! V% E% ]& V& L9 ?
set oscillation 0
* \3 A  Y; P+ _
; P* I: p4 F- L% I# s2 x7 U/ g8 ^
set rand-dynamic 0
& s% z$ N; m- t7 A* C2 y% o4 k
end0 ^) ~* z4 R! z, l6 }

! Z1 V: ]* ~' v3 q6 {0 bto setup-turtles 4 t& P% e: _- j$ \: j9 V2 V: A- g
set shape "person"
1 v- r1 M) [9 [4 \  S$ d+ m) csetxy random-xcor random-ycor" J9 g0 p/ j# @; x( u
set trade-record-one []
' P9 i2 C3 u% C) G1 f
5 ^  ~/ D3 w! L3 @+ z. A( v% x* O
set trade-record-all n-values people [(list (? + 1) 0 0)] : N; D: q8 ]4 {8 H' ]7 G, N

" n; ]8 P9 a$ g# e' G5 [: ~set trade-record-current []
2 u6 w- i4 c3 K$ z) [5 tset credibility-receive []& f' Z' L# H2 b6 j
set local-reputation 0.57 g- D  y$ v) d2 t9 s
set neighbor-total 0. z2 }0 Y9 J2 i5 M) B/ \1 A: s! q
set trade-times-total 0$ ^9 ]0 J9 d' y/ @
set trade-money-total 02 B( x' e& q9 G$ J
set customer nobody
! Z3 d. ?# f: a" T! t; v, Uset credibility-all n-values people [creat-credibility]
- M+ I3 z1 m0 Y/ O5 n4 ]set credibility n-values people [-1]
+ g6 L4 k6 h, b1 K8 N% nget-color0 O9 A/ A. \# o/ ]# Y2 B

& s7 R- x9 R3 w# qend8 x. U* f0 ]) \" U, z+ T! n4 ]

8 b. m) n" C% N$ I& cto-report creat-credibility
0 Z5 Z$ j: w  Ureport n-values people [0.5]/ m" Y& Q3 a/ R  E( n  s) n0 B6 @
end' m5 y7 V- B4 t4 ?

& C! L2 \; S+ J1 r- G* oto setup-plots
- B  F4 K9 _9 J2 I/ i) z; q: Y. G4 t; S6 n2 W$ `2 v5 _% ?& \
set xmax 30
& W& U; E% ?7 R: V3 J" H, ]- @& v

  Q1 a' p4 N# _$ cset ymax 1.0
/ a0 \- o$ k5 [- `  E) L

$ @9 m# P" v. }+ T  h& gclear-all-plots

7 {6 {4 `) @1 i  o) t6 K! F7 b" _
setup-plot1

! o1 B' v5 n3 [9 V& T2 ?, s' k7 A, }# `: ?
setup-plot2
; n& f: f7 l2 j- l$ Y

- f# B: l( t: r3 E" |! A/ ssetup-plot3
( A9 i' @$ H6 m$ c  e. j
end
9 L" q$ ]1 z. n$ E' T1 p
* r, o8 c: g5 H% t( Z6 S1 h;;run time procedures; e6 r* R# q$ w$ x2 t; H

" g$ O8 z3 l) ^8 c+ z$ H8 ]* ato go( c# v8 \8 f$ j( k8 |

4 I6 J  V$ _1 `+ g3 w  mask turtles [do-business]
3 u8 U2 ~, y* I- r, o1 Q) z, L
end: z7 _( T# y2 ?" B7 t) z

2 P& _/ ], P- Eto do-business
7 n: T2 I* e0 \0 `# S" a
" ~- p( j  b8 r, i# b- n: r; K

9 K/ d# k, A( Rrt random 360

  X  `9 T% B# j9 |
) Z, w$ c6 w- L! lfd 1

$ a, K7 f/ @8 V! J0 t( ]" V- z& j& P* i  D3 [
ifelse(other turtles-here != nobody)[
  J  h7 g! m* \6 o1 z0 A2 A. }4 w

5 A( o$ z' t7 R& x) L5 [1 qset customer one-of other turtles-here
6 p0 U9 x. t; R% ], x- _1 P  G

! L' g% U) Q4 t. {;; set [customer] of customer myself

/ A2 J6 Y- D8 R3 c
& Z7 y  U9 v4 h) `* x' ~set [trade-record-one] of self item (([who] of customer) - 1)
4 l, H2 l! T# G( Q[trade-record-all]of self% y* l% E  {0 @, v: Q+ J% }/ `" i
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 K: ?: o- P0 U/ f
. x& w& U: n+ a2 V* w! Z: Y& nset [trade-record-one] of customer item (([who] of self) - 1)
+ t& X( {3 m$ Q: E8 K* Z[trade-record-all]of customer
6 k+ ]( L- a: W# n) K! y
( d  p2 ^/ H: R( h/ j; _! f
set [trade-record-one-len] of self length [trade-record-one] of self

( {( i. e: y, c3 O$ J: W, t3 S" e$ v8 L, |8 N6 {0 `" p
set trade-record-current( list (timer) (random money-upper-limit))
$ B  a) g8 Z" r7 F2 B& N
& f( r' E7 l; t+ u0 q% H
ask self [do-trust]( e3 a$ E- `) H3 \8 M! H
;;
先求ij的信任度
8 @2 O; T' F9 G! a# h
, t3 H( G- n# |( o2 X* Uif ([trust-ok] of self)
3 x7 b- n% c9 k: k/ P- e0 W;;
根据ij的信任度来决定是否与j进行交易[$ e" ?# b, e2 O* O  [: L2 s1 |; Z& s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 \* @! D; b7 g1 M6 O" i, P" A0 s
9 V; [% v6 ]! p3 N[

4 b9 g9 ~& D' ]* f* |& W" o' Y/ \+ l
do-trade

+ Y/ A2 d; d- t) O5 @
4 q/ r: I  ?& x. _8 aupdate-credibility-ijl

7 s, j& H4 q: ~& I, {+ o0 a  u3 p0 R8 |7 Z5 Y+ F- n  y+ a! S, t
update-credibility-list
  R  B: s' s5 I) u1 h7 U8 F2 u6 J4 [1 D
% {# v3 {7 N% X. Q( X7 t: N+ z
& M0 _6 i2 r4 b5 ^* Z% [
update-global-reputation-list

. p- r% K4 g- s, h9 `: W* W% i* T2 ~/ _9 |: k2 H$ |# n
poll-class
6 Z3 ~7 _. X. H: s* H
0 e2 x# g. d5 c" T) i
get-color
: U- e9 v  ^) P. O% s

/ F3 }+ [: E3 P, S1 ^7 \]]
7 T2 @/ K$ T! h  `6 g+ c9 @) a3 e; o! K
;;
如果所得的信任度满足条件,则进行交易
# f- L! V2 `3 C# K3 \, h
' w$ h/ _1 D7 V4 V[
% n( c) ^6 B- }2 P6 b9 W# M) g

! k+ `/ E: J3 D8 f3 prt random 360

3 Y9 q( l9 C/ Q8 L8 O6 @
6 j) ^1 Q3 S6 X% |6 u! ffd 1

9 Z, q2 U9 [& z' ?' C  w% {( z0 @% T2 M
]
  G  n- o, x' Y; c2 N4 b. X, Q( u
$ B* [: ?9 r: G8 ^9 L
end

/ E7 P# z6 `( u# W" L& n5 q& r# V/ t% M, q0 S
to do-trust + C+ K+ @- \0 Q: w
set trust-ok False
. Z5 t& ~4 A! h
8 I" |; S5 S7 P8 \0 g
" T5 i7 A' z* s; C
let max-trade-times 0
2 u2 }( X/ [. Q; ]# [+ vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 @6 J& F0 E* {# elet max-trade-money 0  C" v: J3 Y8 w$ T& `' e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" j, G# h" B$ z0 W: D4 i2 ]; slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
! R" ^- p' b, _1 u9 W
" @: d8 e" x! K- e
6 C9 U8 ]. t  g3 c+ a( M
get-global-proportion
; G7 `& C0 R- Y5 y+ J% o7 Jlet trust-value
4 W) Z; c/ ]! m& @! S, 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)
# a, L" [2 o& ?6 F4 \* a9 N0 Y
if(trust-value > trade-trust-value)
( H0 N' Z! g; i; {" J4 b[set trust-ok true]
4 O) y8 d8 n# o# Iend+ q0 A0 ~- {; m, n

2 c- G. Y8 E( @+ I: Y' ~- Jto get-global-proportion
) A* u' J" u8 q7 e* `5 r6 V3 ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ j+ O( Y* y: k1 B[set global-proportion 0]* A8 P  W$ n0 G% _* w4 B
[let i 0. y5 A* X0 z5 Y  a
let sum-money 08 D, o! F9 v' h4 W) [+ H
while[ i < people]8 c$ n, o( b+ C) K: C1 o( P
[1 h* D& ^( H7 I6 [: h- i3 `1 p* t% ?" ?
if( length (item i0 y6 d& N) A  d4 g; I: s$ T
[trade-record-all] of customer) > 3 )

' }9 h* l' X$ Y$ S& |% N8 B[
; y" E- D1 Z6 z5 i2 R/ h( bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))( c' ^* i' I/ b% Q  S$ l- x; t
]2 V: _0 R0 d4 _2 K* `0 R, E3 Z
]9 g8 W6 Y3 U1 r2 a, e* Y, ?
let j 0% t; j6 d4 V- C2 j* w( s
let note 0" d3 t. r' t+ D/ F
while[ j < people]
! {. b9 O% a3 \+ G6 v! L, @[% [& l$ ]# e% o2 z) ?& I- ]
if( length (item i3 B' q- B7 _& Z$ C: M
[trade-record-all] of customer) > 3 )

" o9 H5 V+ l2 V2 R4 A[. i3 v$ H% Q" E5 R
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 D2 V$ u: q4 H5 Q) H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 }& ]( P+ h7 f  D% N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 ~" ^% \2 d  ?6 c: w% L4 O/ c
]* f9 ]- \$ O2 X' K- Q6 O& E
]5 F3 d1 W7 n- q+ l" s6 [3 p" `
set global-proportion note1 {' a6 h  F8 L* }$ O+ P
]
1 O+ X* m  D7 n: V  a4 Yend
" i2 N+ E4 q9 x. z' R
) F1 F) W- P3 b6 ~) Hto do-trade( X  m. k  k! p7 N
;;
这个过程实际上是给双方作出评价的过程
* ~3 s, y' M5 n, m8 Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 O/ [2 L7 U1 b8 S% [* Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. d/ m  h+ ~7 a4 e" ~, O1 T7 O& I6 i
set trade-record-current lput(timer) trade-record-current, G0 z8 c1 @8 r3 c
;;
评价时间
: c& @9 s' w& h) hask myself [
' v3 K1 j% T* _) A+ N9 \1 U9 uupdate-local-reputation
: L9 _' Z  O1 }0 J/ Iset trade-record-current lput([local-reputation] of myself) trade-record-current1 X& l* q5 b9 P- W, `- U  g
]
  c2 I5 \" J4 D# A3 Aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ p" ?# ^+ o% U4 R3 Y( };;
将此次交易的记录加入到trade-record-one
% o. i0 U9 _2 Iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 L! E& y; c9 L7 d: q
let note (item 2 trade-record-current )2 \1 Y; z6 x$ b) x& G7 ]
set trade-record-current. _* m! ]% y5 X) q
(replace-item 2 trade-record-current (item 3 trade-record-current))

. J: q* x" S3 ?; y: ~set trade-record-current2 Q" _: {3 X6 F0 ~* l" Q7 y- {
(replace-item 3 trade-record-current note)
: i1 Q4 Q5 f3 R1 ]0 {3 {& J( Q" H- F* G" e, ~

3 n: K" A; z- b9 \ask customer [
% [5 d* I2 v' g; uupdate-local-reputation
: G7 u$ I$ M* `5 U- X# mset trade-record-current3 m0 b+ A  J! Z& ]
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; B9 t( }9 M% q$ p/ Z( \
]
* m* _4 d) F9 i0 b' a, m/ L: o% ?. \
. q8 f& e2 A' Y7 _8 z# {* @
: m! Z, W# w6 {0 D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  m: f: m4 [( I5 a) [2 n: F
5 S9 u( Z( g3 W( Q0 Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& I0 r+ N8 Q. T7 \; r3 n
;;
将此次交易的记录加入到customertrade-record-all
  F' E. M6 O/ z: ?: ^+ Tend8 e1 J. D+ }$ `) p! _
2 ^7 S: c! q$ M3 H
to update-local-reputation& j" a9 O# O$ N4 r
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 ]8 j6 t0 _$ t# W0 J
" G0 O8 p1 B# o0 o+ F
, h2 \& l- C8 w, M;;if [trade-record-one-len] of myself > 3

0 D/ n( ^+ F& w, Supdate-neighbor-total
1 ]+ l9 ?( x  s4 Z" w9 h! ~  `;;
更新邻居节点的数目,在此进行
' [5 }& `# |/ s7 W2 ~let i 3
0 i+ ?2 {" F+ D7 {let sum-time 0& |/ s& l5 Z. _; l" R7 X: Q! R
while[i < [trade-record-one-len] of myself], }* s& O$ `3 g  m
[  k5 {' U! B) m1 l/ p1 G! F! h* |+ Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" {* J- [+ H* Kset i" `* o! b- v/ p  @6 c) L
( i + 1)

6 }# ]& `* l' c]
# g* ~  k5 @7 A$ ]let j 3
+ C5 }5 l" |2 w3 \( D5 ]let sum-money 0
! ^; o6 W: j/ k5 vwhile[j < [trade-record-one-len] of myself]: }& V* O8 x; T- G9 x7 Z
[* \7 }" \5 Q: B, `: a9 B$ v- P  l
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)
: F, f+ M- f, ]. X, lset j9 [5 i- e4 Z3 x0 D4 N0 W
( j + 1)
  S/ }' T+ T3 c0 y2 `% o
]
9 W4 M! M* x3 \% |' B( G5 ylet k 3; T" o0 D: A# r1 P
let power 0
+ O1 M. Z2 H0 ~8 Olet local 0
4 n0 {1 J# A1 {- _) zwhile [k <[trade-record-one-len] of myself]
+ k" D) |# b+ m; _7 v, {, X6 c6 J[
' M' W. q# M- T8 I. _  h" |- Dset 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)
1 ^: @. i% P/ `# L% Zset k (k + 1)
8 J8 i. a) m  w2 ?; s]5 C8 Q; V+ e2 W8 E/ h1 p( g
set [local-reputation] of myself (local)
/ S$ W" F. i0 |2 Q1 K' Nend/ ]( B5 n% ]4 m+ ]/ d  @
2 O7 B7 @. Q& _9 b6 Y
to update-neighbor-total% f$ O6 r- a7 [0 e, d

1 i/ d" Q2 E2 F/ A$ X# K! j4 ^4 fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 V' @# p  m7 s" ~" C" r/ J$ k
; c& q( m- k- w! g! e4 c7 {/ [
6 V( x7 B# W! B. D. X2 F6 t
end
' _( `: F3 M7 Y7 {! G' n
6 }- W  p# t' }  w+ ~to update-credibility-ijl
* U" h1 [: i& j& M" I" v+ p* t* e; o0 y7 l0 ]  o
;;
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。
6 V. ?# W. ^: K8 k6 u: K4 i  Llet l 0
) Y/ U. r  `" x! Z% Y9 swhile[ l < people ]7 o" b% c1 |$ @, x$ {
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价% J6 s( c3 V0 ^4 U4 A. {
[) h+ m, _/ F; [7 B9 J
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 ~% t5 D6 L+ A: I$ rif (trade-record-one-j-l-len > 3)
0 v' m* A8 F& G8 y0 f1 c$ J  A. \2 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
0 u8 n, Y7 P$ V  ^7 X+ Tlet i 3
% u! T3 r0 c5 w+ `2 M% |let sum-time 0' w( W8 Z8 J0 B0 @# ^) g& W
while[i < trade-record-one-len]
8 H" f3 A, v6 l[, a' q7 H) K% Q) W! ~7 ^: G5 p
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% h0 V8 C; m2 H2 P+ V. G3 Cset i
# ~$ T* x7 H5 ]% l6 [( i + 1)
% n: K: S8 C8 M* u$ d: _8 J
]
3 Q1 }2 ?( m3 _" W2 }let credibility-i-j-l 0
! Q7 E- g0 o) i;;i
评价(jjl的评价)3 g" a  ?: ?- ^# {( B7 ?. H
let j 3
0 r( c; Q5 y7 H! Klet k 4
. w% `4 p4 |, H  Y6 {/ twhile[j < trade-record-one-len]
6 w7 b- a3 U7 @[
; \& b( M& W; G4 Vwhile [((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
$ w; R7 P( _- i; Sset 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 W% O0 c& y, |set j
) A, E9 b: d0 E( j + 1)
2 J: p+ o* b6 |0 g
]
' i* R% [5 P/ U! A7 O4 jset [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 ))
! p! _: N. n( r- m, k; u
0 q" e2 d# A2 _8 d3 |

# N5 ~5 e; ]5 N6 Z8 Q1 I9 S( Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! B0 \. z5 x+ J% {/ R;;
及时更新il的评价质量的评价
1 w& s$ x/ t& L4 d1 Fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- C5 A% c" U7 }4 k, Z
set l (l + 1)% S+ i" p# q. d3 [" _9 P" \2 u
]5 l/ L: {! j0 K. n8 z; p- y6 p
end
& e2 r( x* s6 d5 i6 p# j& h/ v: l' T! c$ C. T# q8 P4 A" v. l6 @
to update-credibility-list1 H' c2 m+ g% B) e) t% e2 v$ T) y
let i 0
1 G2 k# Q  N+ I/ C# m: ?while[i < people]
0 N1 n% j- j) E7 _& F; a. Y2 r[
9 I9 Y6 J' Y. g5 g0 e+ p: Rlet j 0
" q5 x% q% ^' H+ @% X" Rlet note 0
5 D; e4 t& Y; c( ]let k 0; e% z8 a2 O& X# F
;;
计作出过评价的邻居节点的数目
! Y9 W: {5 `' {+ ~, S- N! twhile[j < people]7 x' z  d: V5 @% g3 f3 u) |
[
+ h0 y( V! O0 W* Z* B3 g$ Pif (item j( [credibility] of turtle (i + 1)) != -1)
* G( y* [+ u0 X& o;;
判断是否给本turtle的评价质量做出过评价的节点3 z( W/ B% {( G; K7 y2 w, S6 P
[set note (note + item j ([credibility]of turtle (i + 1)))* I# F. J' u) I) {" f
;;*(exp (-(people - 2)))/(people - 2))]

" {; x( ?) J( _1 N: \& S3 Xset k (k + 1)
6 Z% I4 a6 F6 i6 S4 V8 d: w]  U  ?/ _" H. U' a, v% ~/ `
set j (j + 1)
1 J8 \) R# ^) J% h+ z9 ~* o! H]
2 ~1 K" y/ k3 T, zset note (note *(exp (- (1 / k)))/ k)7 H5 K( p4 w( {
set credibility-list (replace-item i credibility-list note)
0 c. S6 W7 R/ j' @  tset i (i + 1); o% y6 C& T4 N- ^9 g
]8 U8 w+ d1 f5 z) W3 }
end/ h  c9 i& |# v4 o; |

* V4 K% A7 e1 v8 g  hto update-global-reputation-list
0 H8 W8 |* a, Y- p: K, H. Nlet j 0& `/ D) k# ~. a
while[j < people]9 z' J9 D) [( x4 x5 G+ o, O! x
[! z+ O# A& w0 {+ R2 w# F
let new 0
' w1 _3 r& W& b& };;
暂存新的一个全局声誉! a- V& _! |9 ~. o3 {/ z: d  ]6 f/ U
let i 0& D, x" V5 i' p/ @% `
let sum-money 0
4 D5 Z& D8 _$ d+ u, Ylet credibility-money 09 e8 r" l' Y- U) d+ `
while [i < people]
7 I0 W. U  J6 O# Y* Q* c[
* z$ P" y: X, m( G1 ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) a2 @  x5 Y: R9 J: Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 x" K& A( V2 ~
set i (i + 1)( O. O( a+ K2 }% k( I, J- G
]
, L3 i4 h) q" @& x3 s4 glet k 0
2 @/ \9 M; y8 M3 m; T3 U% Dlet new1 0
: ^2 ^" E/ w- U: j4 V, `3 _$ Uwhile [k < people]
# R! w# W' O% ^/ l: O[$ W) L. p/ C* C
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)
3 C& y2 T7 X8 n7 uset k (k + 1)
6 t& ^8 ^! A7 S. q' ^]
- m/ X6 H; [$ @$ |1 l. d" M& Bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 M" x+ W# W0 {5 h: @; ~1 kset global-reputation-list (replace-item j global-reputation-list new)
. P8 W4 B" p7 K: pset j (j + 1)
* N; N0 R  i+ T& |9 r5 z]
4 n. n2 v6 V/ f+ Q: J3 l/ Tend" d2 |- y4 [' v( j: t3 z

+ f& O8 ?2 h( d: R9 P; V) x4 }1 s1 C* e( [3 u, h4 N
* _  y+ [2 ]% N  e
to get-color
) E) p: m( {, j! {' J
! U4 {( B9 y* ^; A/ Y5 L' F! rset color blue

- H. C! u1 M& H8 [end
, D+ ~# b7 K- m% ]6 ?/ h+ [0 u, l% w# M* q. a
to poll-class
  x9 i& ^3 h( h7 M. Dend
+ c; x/ J0 S8 ]  G' T' R' X# p: s: c( L# w+ g  `" O9 y
to setup-plot1
' n/ M, x9 n8 N8 M2 o3 H
; V* t0 O$ \9 ?* }0 _. ~* kset-current-plot "Trends-of-Local-reputation"

) h; U" p% S8 U" h( A$ H. O3 d" e% V- q2 p- o" h0 a  [" a
set-plot-x-range 0 xmax

. S8 S5 `; m; [1 k
0 k, Z7 ^5 x- V1 bset-plot-y-range 0.0 ymax
% M+ H# T+ v6 J# w8 J
end/ N0 |4 y1 j7 C7 K6 Z
2 k' `1 h" M, r  f6 [, }
to setup-plot2
! d8 A% _6 y5 a# L9 m) K$ C* a1 V# I6 q% c( I
set-current-plot "Trends-of-global-reputation"

1 Y' H' }  E7 T" o* W' {5 Q2 |. u( u% a+ Z( S& \* J3 Y
set-plot-x-range 0 xmax
6 Q+ p6 ^9 T3 u1 Y7 t

$ }2 o9 }' E! g3 W8 k5 Rset-plot-y-range 0.0 ymax
- A# G4 ^3 k: d* X, P# `0 D
end$ w9 G9 V4 [% r- i" [5 @- M! U
3 _6 F" y+ d7 ~) H, H- Y5 _2 e
to setup-plot3
9 E: W! G4 ^+ {0 q, x- Y* S% a  i# [1 }- y  E( l8 i8 O& G0 @
set-current-plot "Trends-of-credibility"
& R2 T7 o7 j7 P0 ?
9 {4 d1 g. G7 Q3 ?
set-plot-x-range 0 xmax
) e: u. N7 n( a0 c9 M

( _% J; Y4 `8 x' j7 D1 fset-plot-y-range 0.0 ymax
' X1 L( H$ V, B
end
5 S' \* k+ a  j! Q( y; K2 s- c2 z; v7 N2 O( S
to do-plots" |# j" O! M3 u/ u  M/ I
set-current-plot "Trends-of-Local-reputation"
/ a' B# V8 d8 Hset-current-plot-pen "Honest service"% |* c; H' a) O+ J0 g9 e4 K$ L
end' m6 U+ R2 G1 i; i- _
. y, g4 A7 o6 S! i" X
[ 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.
5 x; \( g' n5 e2 o1 Q# T4 {& l) g/ r
8 }4 s4 t; r9 Q8 d/ F0 f: \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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