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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 C2 n' ~5 R9 V& |4 ?* mto do-business % A; f4 \6 R5 Y
rt random 360( _( W) _3 o* w# c- `0 F( Y
fd 19 y& v) k  f' b5 Z5 L
ifelse(other turtles-here != nobody)[
7 C2 B7 @& I. E7 D   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.3 L) }, A4 _8 Z0 f9 {
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * d! }. E& v1 s8 J. e  T
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, M0 B! ^) T; i' w5 y* R
   set [trade-record-one-len] of self length [trade-record-one] of self3 v5 P! t% `0 I, S6 I  i
   set trade-record-current( list (timer) (random money-upper-limit))7 L9 @' ]* A! |' j( a& D
: U; ]4 A* b5 q1 u- B8 `- }7 ^
问题的提示如下:
9 y$ B4 D+ E% }& \, l# g0 O% N1 ~  ?# l. V6 t/ t2 ]
error while turtle 50 running OF in procedure DO-BUSINESS
/ ?: G* e7 d" W% I4 e8 [  called by procedure GO
7 `5 f9 H# ?% I# a8 SOF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 u, I" U; e+ \; R
(halted running of go)5 s8 Y7 S7 L+ L0 w/ Z: d  g
, c$ {7 w4 M: 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~~
' ?; k% a# ?+ ~3 E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
$ w1 o, p( d7 _" Q9 G0 `* Qglobals[( O' Z( @' g1 N. R4 U, Q
xmax5 }3 R6 t9 G" }! Y7 t4 U( _5 v
ymax1 |( R9 ]7 }: R7 J
global-reputation-list
3 I! [; ~9 p4 m/ \
* D7 c1 ^7 \/ R;;
每一个turtle的全局声誉都存在此LIST) I) B8 N! _- i2 }5 r8 n
credibility-list
: `# J0 x! |2 j% o0 M;;
每一个turtle的评价可信度) p* t* k& t9 e0 E3 q2 X1 p3 A
honest-service
0 H$ i* Z+ d3 L5 p: Wunhonest-service3 c( g" S' }4 ^) Z* R
oscillation
. l4 C5 L% H! r8 Z8 Y* t& Krand-dynamic$ u4 S0 ?+ M2 M
]
  X' X( B2 n7 E( G- t$ k! I. H7 v; q- [/ I: g
turtles-own[
  I( h/ U8 W9 P, m/ R- I9 Atrade-record-all
( i* d! W0 U6 |& g9 C3 G' z* a;;a list of lists,
trade-record-one组成! T* t- R1 @0 J( H
trade-record-one0 b, j% A7 ~) 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* e0 c# }5 s/ p% i$ ]" X

' o& _! D0 q, K8 e0 L8 L1 v% w; _;;[
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]]
( E2 Q2 }1 Y2 e& Strade-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]
; h$ b9 {  V5 w5 X5 Wcredibility-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
* m4 k" ^& y* u9 z) i  xneighbor-total5 S# A0 w9 L3 E! l! h
;;
记录该turtle的邻居节点的数目! r: Z" u0 u( r7 m+ `
trade-time
. B1 t# o- i% S; W3 b;;
当前发生交易的turtle的交易时间4 w9 M& v: p* \4 T6 p
appraise-give) b+ l0 P7 p" u; f* o( P9 e
;;
当前发生交易时给出的评价% Z; w9 J- l) m; `3 g) i2 k
appraise-receive0 |; D8 m3 l: _6 Q  n
;;
当前发生交易时收到的评价
; M. H2 K3 ]. y% v8 Happraise-time2 ^0 c0 t3 t6 ^
;;
当前发生交易时的评价时间0 D0 l" Z8 L8 ?
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
# n+ O! B  h$ f9 Z! Btrade-times-total1 a$ a, b. _' j# ^: y: N
;;
与当前turtle的交易总次数5 u5 K% L+ ~3 L3 n( u
trade-money-total, o6 d" G; g# V; Z
;;
与当前turtle的交易总金额9 K" v; ~' m/ M" H
local-reputation2 {+ |; v+ {; |: z
global-reputation: ]/ t3 |) K3 _
credibility
: c* N! @8 m* I) M;;
评价可信度,每次交易后都需要更新" ^5 y) ^- ^- Q9 {
credibility-all+ O" Q; i" M+ N, z
;;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 f7 ^/ g$ W5 z% K0 l9 e

+ H& }1 Q; D1 x) e  w/ ]; D;;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/ ?- g4 V* L' [) K
credibility-one
8 }6 n' [' [7 o4 p6 m7 O;;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  {/ I& v& D4 s2 e
global-proportion
- i  ?( q. k8 a( m- l* Pcustomer
4 t9 w) ?, a3 c7 jcustomer-no
$ W0 {3 r8 M- S3 g) htrust-ok
/ p. O7 \5 ~4 ~  I+ ^- i0 Atrade-record-one-len;;trade-record-one的长度
- ?7 p  f/ x4 E]  V: u7 z2 y0 q5 c1 A3 [2 w

1 ?0 d1 X. e. g9 T( @2 [6 E;;setup procedure
' r% e7 S& }0 X& T# ?% C9 u
' r9 T! x9 Z% ~# r$ _to setup
" ~, g. K+ |% U4 v2 i6 x' @% N! q3 z4 D
ca
1 S$ Y0 l1 c& X' U, ~) @+ _$ V
: K/ L, N2 l5 {6 F, N1 d$ P
initialize-settings

& l! i- Z  A9 W% l7 |, a7 c9 @
0 E7 y6 a' _8 V6 ^5 l$ x+ Qcrt people [setup-turtles]

2 l. B9 j7 ?1 ?: c4 \& j; W* T/ W3 I  O8 E7 x1 d& Y( }
reset-timer

/ ^: E5 F2 d+ P- D( R9 U9 b! k+ T: O; A/ Q' x3 f
poll-class
5 H9 U4 @4 ]% k' E3 |/ d' B) u

, c: x" [, W5 B7 _setup-plots

: S; u2 w8 W: }6 F, P  ?! o
" q1 _2 e& b7 n. S' G4 ldo-plots

2 M+ V$ P1 g" F& n% C3 ?  }2 pend" e! X8 p5 G6 p) ]

' n; J2 d3 i0 c# {* w2 ~to initialize-settings
9 u. K, j* i- G8 P3 o2 y" k1 c& d8 O. T6 m
set global-reputation-list []
! T- c5 H  z0 Q: z0 r

- u- |' _( ^. X6 M& L- W' r3 ]set credibility-list n-values people [0.5]
" e2 [2 m3 E+ t
- e( H) J* y, `5 F0 ?' V
set honest-service 0

4 t0 l& K' I. h! u+ e# e+ L- ~6 G- z+ b4 U* Z/ v5 ~
set unhonest-service 0
. q3 l, e& q0 E+ z. J4 I

. T+ m& c( s6 x9 hset oscillation 0

0 [8 U0 i! C# M, ]4 E
: x  p$ ^% M, x7 G$ Y$ ]+ c! @set rand-dynamic 0
+ C6 Q$ v6 A* w. e% E6 F3 ]
end1 @$ b4 B' d% K4 n7 f
7 p0 U, C3 ]1 j5 t
to setup-turtles 2 D( N$ \' J) Q" y) |
set shape "person"
$ w$ }# l5 p% |- K1 Ysetxy random-xcor random-ycor% h% O% _* [. c& ]& e
set trade-record-one []  w2 G5 b& }0 d+ K# P$ i

% e5 o; G; F: ]) Y) I( A5 s; kset trade-record-all n-values people [(list (? + 1) 0 0)]
  o% V+ `4 i3 c
+ A: S% F7 ~2 H' J
set trade-record-current []0 Q% {$ G2 ?% I) A: D; l
set credibility-receive []
% {( j( v/ l: A( W- B" J  |set local-reputation 0.5
* v% {' s' b) C9 Hset neighbor-total 0% D2 X# X0 h5 Y" A
set trade-times-total 0
. f) }8 t0 B' C. K, \6 h) ~) sset trade-money-total 0
0 ~# B; C9 `: X. ^$ c: c# wset customer nobody2 c: t  q3 G7 W/ O0 X* e- `% B
set credibility-all n-values people [creat-credibility]
; O* q3 z5 ^+ ]% B0 \- Bset credibility n-values people [-1]/ N! V# t- @$ l" ~
get-color
% }6 O( U6 K% I+ i: ~2 d2 N0 ]
, p: Q4 Q- k0 R$ e0 Q) X# f. }% H
end
$ A, @3 _$ G- Y& f5 [5 _' q5 y4 ~# g0 I* v" `& r
to-report creat-credibility
3 p4 A  f3 M9 p) {% `3 h' `report n-values people [0.5]: r1 ?8 E- g& S3 L8 a5 k" z4 x% R4 ~2 U+ X
end
- ~+ ~; p6 \" h, J  I
  H5 U3 Q: F3 r7 q! _to setup-plots
* }9 O0 [/ Y# j* v( u1 \; ^& n& G
' g- K+ U, z, N; Tset xmax 30

2 B2 Z# r+ [0 b  ?6 M5 v0 v; O" H8 v  w
set ymax 1.0

: H) I* Y4 D$ Q! [! o  d; c
$ D8 f# Z: F7 {0 e" ]4 a6 K& S& Dclear-all-plots

: w/ D% f, r5 d7 S$ q
8 B7 M6 B3 D) V( B6 u6 jsetup-plot1

2 w# s) A6 d: D4 Q  ?+ V7 U  Z3 J1 K$ a- G
setup-plot2

9 Q; L* D% [8 J6 f7 A# x* f
; {2 p; U7 c: @; r! lsetup-plot3

; I6 U. i1 x+ O+ B5 n* m/ aend
4 ?* k* N, B5 x3 y# Y/ p0 ^2 o. p- c: ~+ u* ?# f# j
;;run time procedures$ [, I( o1 ~$ g1 G& t& N' ~3 L. v* w
0 k; l7 C0 F" s+ I9 P8 A' {
to go" W, a$ w3 _+ n! M1 S* Y4 H+ e

) B7 ^6 C/ Q& C# ^ask turtles [do-business]
5 W* b5 _: }: l) A! E& F8 s: P& X
end
8 z: s* y3 R5 b% f
8 E9 }7 [/ E' C, [; q% h; {: ~to do-business
1 ~6 e0 s- ^' @2 L* G0 @* v+ }/ l
4 K# C1 q* Y. j7 B0 Z

2 e" j2 P; y* ~5 [, t8 U- `rt random 360
/ S. S3 m/ M4 q4 N/ V4 m, i
) f; v% T7 ]9 [  ^/ h+ J3 S
fd 1
$ m7 t! w2 ^' T- |( S% m$ N0 V+ t
% I* n; c- m: I# b$ i
ifelse(other turtles-here != nobody)[
$ i0 n4 u* K) V2 U

2 q7 F! x& s5 v3 w& a# Iset customer one-of other turtles-here

8 l# E6 p5 l% {; l! D9 |: I% e2 Z. A3 }9 v5 h, C
;; set [customer] of customer myself

* e9 D2 k: H3 F' U  B, `& B. [2 ~  k# F. J% C2 T) G  e! }
set [trade-record-one] of self item (([who] of customer) - 1)
8 S+ y/ x$ M1 p[trade-record-all]of self3 U7 ~( M$ @$ s0 L. |' A6 ?: n
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 S5 G6 R5 h' b3 y# O: p5 Z

- V1 Q) _5 e, m. s# Eset [trade-record-one] of customer item (([who] of self) - 1)) r/ m9 a! G- G" ~1 C% A" g! F
[trade-record-all]of customer
! q3 s1 t3 S: e9 \
. d; \: Q# ~3 O( W& \& M" [0 M1 Y4 V
set [trade-record-one-len] of self length [trade-record-one] of self
: ?% H: G. ~$ x" P: k

/ Y. Q* G8 e- D+ y! V2 k3 xset trade-record-current( list (timer) (random money-upper-limit))

  j0 U: T$ G1 e
, Y+ R# u. [  W: Nask self [do-trust]0 }, m+ B8 p3 Q8 e! ~+ B. G
;;
先求ij的信任度
. Z2 s2 s& S7 g$ H
; J* \* N2 V) u6 e; i* }1 Fif ([trust-ok] of self)
0 @! z5 D) j2 t;;
根据ij的信任度来决定是否与j进行交易[% d, R7 s9 z5 ]" m2 K0 S+ f5 l
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 ~' Y& B3 P) {  a1 d: ]' S8 [$ G
, a* C/ S* Z% P! j6 ][

, T+ \# S, t2 h3 u& g
1 Q0 M, m% e& ]" sdo-trade
* h0 Y) z* K' s) A* J1 k7 v

# q& z' G5 g& j( K% Eupdate-credibility-ijl

/ {7 s; C( e1 X7 R/ I& H2 n
& ~1 ~# u5 Q% H9 Vupdate-credibility-list
/ \1 N6 H9 _! l+ M8 f! e! G" e
6 e: |" P8 Q- M& @. ]8 K8 s$ [  p
. W+ J& z. T: R2 M! x
update-global-reputation-list

% n+ W% H  k* C: ~  I! L" m
) v! [9 T4 F  r; W# R1 U3 `poll-class

5 ^; X" ~5 n" q/ s
0 ?# X# L/ m6 b2 C# m0 i  ~get-color

% c" X, w: T. v7 x4 ?  P  d) j9 G1 s2 G3 f
]]7 l# v* t; P5 _0 B* u7 ?
7 u# e+ g5 @  I' ?: a4 S1 V6 x' G0 a7 v
;;
如果所得的信任度满足条件,则进行交易
; t/ S1 U# Q3 R, A/ X# r; I. h1 y1 L- _) U% u  s; R
[
: p9 J! i( O  c# |0 \# L8 V: {4 h

8 e4 d; _/ N5 q; Trt random 360
8 [2 s. F5 r; S- _9 F
) z+ M) D1 n- |7 j  k( I9 i, J* x
fd 1

0 i, L6 {' b, n+ t" H- W* ?* p9 M
5 F0 M5 S, c* _( N! L& A]
; l! y& u# O% P2 L

" Y& }7 Z2 a1 ~1 B0 \9 Hend

4 N' k* O; W2 z) L# n0 I! u2 v! u; D. n1 n
to do-trust 3 q  ?  m) _! k) F% ?3 p3 j; S
set trust-ok False( C" G: @- O7 Y* W; T! \

' `, A! O6 {& C5 D$ G" S  `1 G( o6 u

. j0 H) @6 g; \; Klet max-trade-times 01 `1 |, {; U6 I% I5 e& `( ~$ d% N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% N. _/ R, m5 n  o' F% W! T# Hlet max-trade-money 0: w: P# X9 x* `) F/ t; S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 d1 @2 N3 z0 ?& p" m8 Z
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 ~: D2 V2 ^& c3 ?+ b+ Q7 Z8 Y* R1 I! r' b9 U" O" j; Z. }' o+ C6 A

1 w  E" m  `9 f* c( x: y/ J+ d1 S5 }get-global-proportion
4 I7 ?7 T- D- ]& T' |3 \( D0 M8 T, D3 Jlet trust-value
$ f5 @8 d' D1 f3 A0 A# plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* p& b9 [) j4 n: v- _% R7 F( r
if(trust-value > trade-trust-value)
7 x6 Y' T4 m) `$ d' D; q[set trust-ok true]
  J8 c9 H- Q; y, |/ W9 ]end& e/ D4 _. f3 E4 K
- @+ O' t1 {% l
to get-global-proportion2 c) w& T# S3 \; W$ ]  @: I& R9 V. n1 }
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 O% r2 P$ D) z( y. {) v4 q( p
[set global-proportion 0]
+ q. _$ ~* ]5 i& W3 l7 ^6 X[let i 0
% u* [" m. P1 m! \: f6 Elet sum-money 0
4 z; R- S2 P3 a& G$ vwhile[ i < people]
1 V! M# [# Q7 P; ^9 Q[1 J$ ~6 z; `5 }' h  t6 l  b
if( length (item i
" E; }/ G+ k: o: a[trade-record-all] of customer) > 3 )
, C! q2 r% _% `- k7 i
[( C$ f1 w2 l9 L3 E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! T  Y+ `. P# S- Z- @]
% p+ k5 i" y/ z$ _# C% n/ d0 E]
8 W& m$ e& Q( e) f2 w3 w( rlet j 0
' b. y! `9 h. s% }7 ^# Ulet note 0
( i! J: |9 n  C* M7 Zwhile[ j < people]
; k; C. p( U! s7 u# N6 r6 R# I[
; G, i; |2 t: w) s: ~if( length (item i% b; j, Q# S2 |+ X' w4 Z; V5 |
[trade-record-all] of customer) > 3 )

) l) h* h+ c) U1 c[
7 Y& v, [, Q: L0 C3 E8 p* a9 l& Jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 V" {/ }) |5 R2 V! i3 y: O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 _( T( h( t+ L  Y! ~[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! g, C3 u: T! K+ a  O( `) H
]: l* J+ ]) N. J  |, I
]
. w2 E8 @4 U* [% l9 vset global-proportion note* y- y* T' p* j8 y: x% A
]
6 P  v. Y/ F) c! d. a- Pend
+ c* \: b* _- d6 |9 T3 {- u
1 _' [3 ~" F* g) Sto do-trade2 Q7 u. u6 G& I/ F7 x4 r7 E
;;
这个过程实际上是给双方作出评价的过程2 y# v9 h8 {! @; u1 @& K  Y) l5 O3 Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% E. t+ K. S) a2 L2 ~9 Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' K: |  D6 u, K( _$ E4 w
set trade-record-current lput(timer) trade-record-current
- o7 K% b2 u' g. Z;;
评价时间
; x: n% [" j7 e! ?$ s+ Cask myself [# x2 f, r* D1 Y0 w
update-local-reputation
. M" ~7 A" @6 p# ?/ i* qset trade-record-current lput([local-reputation] of myself) trade-record-current
0 F2 k/ a4 T2 U" {% f]2 @( S/ Q* }; z9 X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- y: e8 h9 ], e6 V) J;;
将此次交易的记录加入到trade-record-one4 A8 f- n/ B4 w1 b2 ?
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ `' A7 H9 m* r+ m. J6 L. d) o
let note (item 2 trade-record-current ); \4 C8 \1 m4 Q! i
set trade-record-current
$ r, ]- v8 Q1 ]2 ~3 q$ O(replace-item 2 trade-record-current (item 3 trade-record-current))

) }4 P: u& v: X" ]; r2 ?set trade-record-current
- d) @' o/ G# W: w# H* q: N1 Z$ Z(replace-item 3 trade-record-current note)+ b5 u; w1 J( g% \: }, x2 D

+ h# T3 a5 ]) X6 G. w

# F! N: ]2 Y5 K0 e+ U2 o( Vask customer [% z( U2 l( P3 t) i2 i: B
update-local-reputation
  j; r1 ^1 Z6 ]  k* P6 c! D/ dset trade-record-current
0 I: ^* V0 y& d/ F/ K/ G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- j+ ~8 p5 D# M$ L$ d
]
4 M' Y! q6 ~3 C* R9 g; I: L7 N
7 }: j2 L" d- p4 U2 @
6 g" j0 {3 m6 Y: \6 {
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ j, N# P) Y+ A9 {

$ S: ~+ W$ D8 L# ~: [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. @" j5 v7 _2 q* C+ |5 Q;;
将此次交易的记录加入到customertrade-record-all2 H: u& H- m; h0 s
end
9 H  G; T/ S/ ]; g1 S. N2 V; ~+ u' R0 n7 L6 S4 r
to update-local-reputation
: s  d  C+ h) o! T6 l5 m/ \  e5 Kset [trade-record-one-len] of myself length [trade-record-one] of myself
7 `* w" h8 \, y$ ]  G
" d. z/ N/ _3 w4 ]) n. P- _# O: n, y5 L6 r( ]% M2 @' t5 D
;;if [trade-record-one-len] of myself > 3

. q. ?" N2 V+ J8 r+ W( V6 ?9 rupdate-neighbor-total
* E) G& R: b( U% X1 n;;
更新邻居节点的数目,在此进行
3 C% J0 v$ H& i) ^% V7 Vlet i 3
2 }; x; ~2 I/ k, {4 ^% Ylet sum-time 0( T  K, q7 I; W8 Y+ K' e
while[i < [trade-record-one-len] of myself]7 M0 t; q% ?; e. T* C$ \
[& N( A6 A0 v9 B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 E2 O7 }' a. C
set i8 h$ t2 M$ f+ @* |4 `# C* {; G
( i + 1)
# B$ u* j5 C" G5 \& b4 v# _
]; F( _* z2 o& v+ S
let j 3
9 o" E5 x- D$ [let sum-money 09 i4 b* p( L* J) f0 k4 O! V
while[j < [trade-record-one-len] of myself]
; m. }: o  B- b+ Z" `% a[8 W: T4 Z4 x( I3 T7 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)
  ]7 u5 {5 H0 ~3 gset j
' K1 i" K& j& V1 W& \7 N5 `3 Q6 E( j + 1)
4 {+ O; i6 l2 h' t9 |. A* A. }
]& e, ?9 ^% p! e0 k6 B
let k 3
+ i& u& d5 N' o. Q  alet power 0
0 {/ q; k% W* zlet local 0
8 T6 K5 A( l  [4 Iwhile [k <[trade-record-one-len] of myself], y! f( W5 z" c" u& {
[$ N) ?# N: g$ G0 B8 o9 G
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) / e5 j7 a, _1 n4 v: c( p  M) i
set k (k + 1)
4 D3 p1 q" Y- N* P( M' }3 P: h. b- e]7 A) `# `& G5 S& ?' Q
set [local-reputation] of myself (local)
8 t& [9 E4 T' L% ?2 l7 Uend% ^( A8 z3 f% J4 C
. w3 I4 C# _. W8 X
to update-neighbor-total
7 s5 d3 `; _% S: z  E: L1 j# W% l' }" k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. `# S- z6 |3 s2 u

8 P9 |2 X8 h# z" Z/ V" y
& S: B3 b* d/ ~4 `8 D
end
. b+ a- T" a# X, G0 T7 N7 s% g  J3 W% {3 F4 v! n
to update-credibility-ijl 5 y/ p$ P/ B5 ]% X( B

: L, n$ C+ ?" j0 P; L* 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。; M" F& o: [' }
let l 0
2 J1 M" ^0 T) ]; `+ J$ C# {8 j% P2 Vwhile[ l < people ]5 J7 a  R9 t$ _" j
;;
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 g4 B+ Z( ?, w8 F[
/ L7 r" R- Q4 F+ g( V6 I" y' S# olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 @9 Y) w# g7 V9 O
if (trade-record-one-j-l-len > 3)1 h( \* R3 E2 O  d% N# I: `
[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  k) h& Q, R+ l
let i 39 i; W( D0 [# @! n' |3 {' e
let sum-time 02 B: ?9 ~% X7 `, v+ }
while[i < trade-record-one-len]' @( S- A1 I9 x! m8 o3 f# E
[8 j" B- @! f( H4 V& Q, B) ]' u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 g9 S9 S  o+ ?
set i
( ]. `9 s- a' y( i + 1)
. K6 F) ]. l% c7 {9 u
]
- ?7 `* k0 y, R! |6 t+ qlet credibility-i-j-l 0
7 }+ ?4 w  S* q5 A6 K4 e;;i
评价(jjl的评价)
2 Z5 ~% p* b) S$ Ulet j 3
: d6 d9 h# L% r9 u/ M  |# Ylet k 4
5 Q- z$ z% N; |. Vwhile[j < trade-record-one-len]
; r" p2 n! }( U[
* J+ i) V3 i- h! q/ K! b" j0 gwhile [((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
- F$ [9 J9 [) x% o' q0 d* ~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)
0 _/ S4 Y8 s2 R; d, [) o- eset j- |- k6 x( _( x5 p
( j + 1)
. z0 Y- ]/ [! q0 {" @9 i
]
* H" d# b9 E: G, h" `9 nset [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: l8 K% X5 X3 a  K' ?
) L( Q% Y/ h3 j& O# s1 v
1 {" W3 P# [8 S
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 p4 T  M- J  |) _
;;
及时更新il的评价质量的评价
) v5 z( V. ?7 S9 a6 lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* u, Y/ w% z; W3 S0 Mset l (l + 1)2 y% e/ Q3 ?: D) q5 i; K1 G
]
' x! [% S* _; y- ^; [  Pend
* n/ W. q. w- \7 B
. U; G. d- E; T# t- f% Qto update-credibility-list
$ x$ t+ K% G5 ^: e1 jlet i 0" k% h+ s* n# H7 ^. S4 o  ?. @
while[i < people], F8 ?9 [- z. H( a  C6 y+ ~
[# s6 r/ a8 K% P% e) ~7 q: s
let j 0( {4 h9 p( @" ^6 r& Q: [
let note 0
% s; Q) n/ S4 z2 g7 qlet k 0
8 f4 U2 O# w6 c- E  t; R;;
计作出过评价的邻居节点的数目! k. i7 F% ^. {3 z
while[j < people]; S  J( C- X- F* \; s
[9 D2 Q' E+ y- K+ p
if (item j( [credibility] of turtle (i + 1)) != -1)
) c& ]" a4 q* E2 N7 ]& Q* B7 ^;;
判断是否给本turtle的评价质量做出过评价的节点
, p; ]. K9 a* J5 q[set note (note + item j ([credibility]of turtle (i + 1)))
5 c/ H. b! g# j6 N! z0 a;;*(exp (-(people - 2)))/(people - 2))]

0 J# f" K; M, O  g. J' z) }set k (k + 1)) N, H! b  P5 }) A! x8 e3 c) u
]+ |& Z. e5 [2 T
set j (j + 1)
. h8 I7 h. s% R7 o, r" q]
! ]3 @+ L; ], e& [9 Z' }1 G1 Gset note (note *(exp (- (1 / k)))/ k)
6 c* A) \7 l, r3 @- g. aset credibility-list (replace-item i credibility-list note). n5 \1 h; r4 ^8 V# X8 R! v0 A6 P
set i (i + 1)0 t$ a9 E. g: r' o' ^5 W
]
0 k5 Y0 Q. _  oend9 E2 i8 L% P4 Q2 Z
: O0 g5 z, Q% \" k
to update-global-reputation-list
7 o8 S9 l; s9 u9 k4 Ilet j 0
# W0 j3 K/ W# _8 B# O8 G. iwhile[j < people]
% V! C' v) |  v9 a0 c  b  B[
/ [5 p7 c6 P7 zlet new 0; n. O5 A. B1 X; K- \) N6 s/ j% L
;;
暂存新的一个全局声誉
! v; x  b5 m9 y! blet i 0, {9 _" a, x9 j8 {, `" U
let sum-money 0
, `% Z1 A: Z$ v7 i# ]- Q. s: h5 xlet credibility-money 0+ ?+ w+ u) C& e+ m6 e: W
while [i < people]
. @' @/ V# y: l' s[7 U- x  K% D& y4 x6 i7 P. j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). j: V7 `7 Y/ H- ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" E' n# w# q# c' y6 }4 jset i (i + 1)
9 @, g8 i- u! ^  i2 i! w* I]! J' \( w* H7 A- A& K+ A  t* q
let k 09 l/ {+ B  X9 x" I- r2 P" Y
let new1 0
- k% s' K' G# O# e5 P; O4 T  Y: [while [k < people]
& |+ R4 k$ ]2 F% D' _& I8 F1 _[6 V9 k. N; N* m
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)
! Z3 N! F5 d# k5 q5 J4 j1 S& zset k (k + 1)  N8 R$ r+ D( J. F! x
]
) \5 }! s& h2 l0 Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 k" E: r# Z/ {( F( b) r! D: c
set global-reputation-list (replace-item j global-reputation-list new)7 R7 w6 v! y2 Y
set j (j + 1)
$ r- Q- V, w2 v]6 |; r1 P# t) ~; F- X) v4 B3 y  R
end- o% X: Z$ H* e

- I, }( r) Q+ I# m/ ]
: E- Z& f- g5 w$ ]6 L. r6 C$ C+ u/ ?
to get-color! {9 j6 `4 a9 l, i$ h; ^
. P. R1 |* S* b* J. x" U( f& _
set color blue

2 G- f+ c$ w9 ^5 e; gend
8 \& T  e& \& w) x* R6 q$ W4 S. S3 m+ {- c2 A1 i
to poll-class
4 _5 J6 P& H5 s+ h5 {end" t& R/ r+ ?- G; E7 X5 M$ c

+ M; y* A: X' @9 M+ s1 \to setup-plot1: T9 n7 P: Z: `9 A3 y8 C
0 d: L! M& O; {" \
set-current-plot "Trends-of-Local-reputation"

. ^9 Z( h" q' ]. W/ y5 J4 V3 i! C, f; i" C; G' N
set-plot-x-range 0 xmax
' E! A2 I" g5 ^, p( ^2 Y- \) k, ~

* x0 [, B. j' U' W1 tset-plot-y-range 0.0 ymax
( A: _9 |8 t. a$ I, H
end
9 }  L. |/ q) V+ d. @: H: ], r5 {, Y. h  X3 M! b6 M2 ]
to setup-plot22 `2 s8 e+ V' P6 K- `
  o1 t: g" ]8 g
set-current-plot "Trends-of-global-reputation"
. v+ @9 |* ?) w3 q

9 d$ I# B' P$ S8 @8 ]/ p6 O7 Mset-plot-x-range 0 xmax
% P% g# M- `7 Z

: M4 }& P" u) @8 P* J1 @* s  w3 v/ rset-plot-y-range 0.0 ymax
2 b. T7 G7 A7 Y
end
4 c* t( m  G1 d/ S  I. z9 ]0 ?" m5 A' W4 }" m" \* \+ A
to setup-plot3  c, y* ?7 \3 {8 U5 }9 W
4 i5 v# g' y0 W4 x1 R4 N
set-current-plot "Trends-of-credibility"
1 P$ `5 T8 ?3 s* B. a7 E+ I  j

6 t2 r" _+ {( C( _# J+ Uset-plot-x-range 0 xmax

' Y; t$ J8 }0 U( G5 S! |2 Z: `( A
/ S$ x% w: p* dset-plot-y-range 0.0 ymax
8 L* v8 |; ]  @# Y) L
end. w5 r) z% ^  d

% J5 g0 {! W0 c- ^( R6 Rto do-plots6 _7 {% R- U+ r: J& i
set-current-plot "Trends-of-Local-reputation". M' I/ c6 A5 K% b# W# \
set-current-plot-pen "Honest service"6 j* A7 M, S" ~
end3 @& M( _5 ~( y* W& z; C
7 f$ l! Q+ N( A- Z5 _
[ 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.
' x/ _& ]# r3 x3 s! z$ e& Z
: @& R4 L: y) u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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