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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:8 Y. g* t) k% x) v
to do-business * [1 _$ b9 B( t* P- D( u
rt random 360- o! H5 a/ y" a+ T- ]  B' ?
fd 1  \0 ]7 d0 W  c4 Y" G' l
ifelse(other turtles-here != nobody)[
5 F! t' P  T" J. C   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
  ]- }& }1 v" e  [# V/ ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; ^% _1 d# H( ~1 D% D   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& y9 t1 U  w# P, j& g4 p
   set [trade-record-one-len] of self length [trade-record-one] of self
# ^3 {! B* x: l/ Q+ ^8 S   set trade-record-current( list (timer) (random money-upper-limit))8 @2 k& O, `8 o* @  o9 y4 r* X
7 i* v, r9 R4 j# V/ I
问题的提示如下:
3 F2 g" I! B  ~% M
; A' H3 x" ~) L2 b) y0 E$ Lerror while turtle 50 running OF in procedure DO-BUSINESS$ ?. ?! c" l" p8 ]
  called by procedure GO2 E+ b$ |( W# N# _
OF expected input to be a turtle agentset or turtle but got NOBODY instead.) C5 y0 a% t" D; j4 w2 b" y# Q
(halted running of go)
$ S7 B: ^3 O9 ]6 S" X% [; }) L4 X  E9 d+ Z2 w1 Z. n
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~~' U% O' d# G! L1 j- e# H$ Y
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
7 z% n. E& `% J2 Z; g" Nglobals[
: J$ |* g2 Q" Nxmax+ X, S; I4 t7 p; N8 w" p% y
ymax
" G3 X1 m& _* W0 p% }) e! C1 aglobal-reputation-list
$ \+ n' u; C% @( G& O' r. `) w; b4 Q  u7 I; ]" v
;;
每一个turtle的全局声誉都存在此LIST
+ u9 E1 N! x$ i0 |4 S; z5 Z7 F3 Dcredibility-list
- u+ Z8 f  R' T# n' ~* _;;
每一个turtle的评价可信度4 ]2 ^' s; e$ N, ]2 e- i0 a
honest-service
  t2 t% M: \9 K. P6 Qunhonest-service
: K0 o) {* Q8 b/ |oscillation
4 R' ?  n- E* C; W: ~rand-dynamic
: Z- F" C$ g) K6 R* s8 ~$ k]6 f4 T3 o' `* q7 I# B9 e

- d4 m2 i5 Q2 s$ x5 Uturtles-own[' E3 t1 D5 A# m" R! e' X, p
trade-record-all+ i( m  ]2 ?) e4 E" S( s
;;a list of lists,
trade-record-one组成
! J9 u' i7 ^) q& Z2 ]trade-record-one
; n% u. a* m; \;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 _$ [  G$ {: ], ?2 O
: N/ T2 T/ H$ j; a: Y5 Z
;;[
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]]
! B! ?+ W% J) L: n8 F. I, ftrade-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]8 `  }! z$ G- k& B6 x
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
! D! c; P' b$ R8 a' k# Jneighbor-total; Y% Q$ f7 y- D
;;
记录该turtle的邻居节点的数目0 H, f; V- H; o7 Y, r% v7 I1 i
trade-time
8 ?: T) g+ G5 U1 b" Y3 W$ z;;
当前发生交易的turtle的交易时间' ^3 N8 }, G- X! k* G$ H' c
appraise-give5 o" G# V& j/ A0 N9 k! x
;;
当前发生交易时给出的评价8 e7 t* O1 Q8 K$ B' h
appraise-receive* B, C8 g, |6 t8 h
;;
当前发生交易时收到的评价
/ P8 i$ t& s; Z8 }( mappraise-time6 b; j9 o$ n) J3 t# g4 a
;;
当前发生交易时的评价时间
" M- f: R, a5 o4 x: A- Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 b. A9 @) }- X, D) Gtrade-times-total
2 e  u, j  _1 h2 t1 {7 A2 Y;;
与当前turtle的交易总次数
  R3 O( z1 A- H# }( t4 ?trade-money-total. d/ d7 E& Z7 N0 z' d+ F8 c' R6 ]) M
;;
与当前turtle的交易总金额
7 p4 W7 `5 ]2 @& g" p- N+ r/ f& plocal-reputation. j6 m, U7 j; j0 L5 c0 H7 J
global-reputation* R% q% ]" i4 p) ?
credibility
. T! X+ P" x/ K) A! P  Z;;
评价可信度,每次交易后都需要更新
! d; [# H, Y, a9 C9 H1 o- Bcredibility-all( Y; }0 Z8 V& e! d( T& \4 C8 }* o) K
;;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
7 t% I3 ?. w6 T. r2 X/ t
: [2 L" L) Y# H- B4 F;;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
# n% r" p" L: J8 v4 u& \: dcredibility-one3 L2 V* s+ M! _" r7 W+ t5 a- u
;;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
4 _  W1 S! J( P1 M) f+ D! Eglobal-proportion# n0 j( y! j" x
customer
. \9 Y( l8 ]" Lcustomer-no
  O9 D: i1 @; `trust-ok
6 {; t( {$ D  k3 Ntrade-record-one-len;;trade-record-one的长度
1 @& B, y1 a2 P' O]
7 N* a4 x" ^# k+ C* ?$ l+ m1 l# }5 L( X9 |7 R
;;setup procedure! x9 [( q' j' ]% m+ `* v

, c/ ~* e6 ]  Dto setup* \9 ]5 w9 M! u8 F3 A+ i

$ |0 U* F% X9 _0 ^: X" A; ]1 ?( Gca

( @. E6 A. z, c6 C! V8 d0 e- [% b0 Y! X9 l
initialize-settings

$ t) n, k  J( `, g1 `. ^! t' L( N- Q- V: ]6 x
crt people [setup-turtles]

2 e" @( e. D0 P# s3 `' q
$ Y  W3 {7 d+ s, ireset-timer

+ s: Q& K  m" o5 D; l% t& c, v- o' @5 E- s3 K
poll-class

) A9 M1 F( x% }4 d7 `% \' i, L7 q* R/ }1 W' b4 p7 D1 [5 L
setup-plots
/ Y% G4 X: |/ ?% A

. @7 ?: u5 F8 J9 _; I3 Rdo-plots
, ?; l, V$ ^* a
end# ^) `: Y8 i  z
) R; P5 V+ N& u% E5 M
to initialize-settings3 b) V; @8 o& G' p- C3 t1 I+ O8 Z
  W' Z9 G; ?% A
set global-reputation-list []

1 k: v  M- }3 v/ B, x1 e& g( r, O1 V6 U: v/ d' P2 _) G+ r
set credibility-list n-values people [0.5]

/ Y) ~7 I. N' K+ r! t# `* h: U# p$ e8 j6 w' u" K9 m+ C' v' O' k
set honest-service 0
  a, G) Y! C% p, S* [

( I# n3 c' u# L- B* {set unhonest-service 0
5 x% d& a, I1 \% U

$ _* L; Z, N. e  ~) ~set oscillation 0
8 X! r' i% `2 ~; H8 b

9 o; Z& ^4 o! R# V- O+ Cset rand-dynamic 0
# [- G4 \. x* \3 ^/ I& b
end" p1 N& U3 t8 C+ t1 w% h6 ?- a
8 p7 W8 p( t) }4 v% J) E
to setup-turtles 6 _# O( F0 R- B5 F
set shape "person"' {7 [4 y3 h1 H/ t
setxy random-xcor random-ycor, H0 J! {1 W. t7 W; A6 F- b9 ~
set trade-record-one []' z6 m! U9 |3 ^6 ^! v

+ L' {3 W: P4 e8 G, f3 j5 y. Qset trade-record-all n-values people [(list (? + 1) 0 0)]
( m8 B- r- @( ]8 x
4 W8 j) o( ?  z- R8 l
set trade-record-current []
- Z: ?& l# b, Vset credibility-receive []
* t) H$ m2 ^( j3 S/ T. ~set local-reputation 0.5  o# e" b3 B# x
set neighbor-total 0
, W; L+ Z! o) i; Jset trade-times-total 0
6 i" B6 o: U8 C8 c! j& O: Z' p( v* iset trade-money-total 0
+ f( A# B* ~+ M4 Y2 h- Y$ B1 A2 fset customer nobody: a6 C3 B' F: r9 Z. O8 Q
set credibility-all n-values people [creat-credibility]8 }5 w" [  B  _- z9 P
set credibility n-values people [-1]
/ ^; I0 ^5 i# T% B6 eget-color- x$ q* d0 e3 c% q, _4 I) z. P

/ x' A* V6 ~5 @6 [" X. Q2 L1 Hend( v4 x1 _7 q+ s; m( y
! \) d7 }& W  ?+ g" t4 C0 J5 a
to-report creat-credibility8 M2 T( r0 E2 f$ f& F5 g7 h2 j
report n-values people [0.5]
0 G4 T4 ^! k& r, i, Wend
3 ?5 g% F# Y  v" x8 ~  d4 ?/ V8 V5 u) c% O6 @$ d
to setup-plots
9 V. v1 J2 ~. e  J  }8 M+ \) s. G/ i6 X
set xmax 30

" F, \( Y  L3 Z
: q4 X) @! M& K- u' k; jset ymax 1.0
: c) s) g7 X+ C6 N7 g; O2 N
2 g3 r5 u: i+ _, `2 Q( N
clear-all-plots
5 z2 P2 O- Z4 X) E' F
7 A' p0 j* n; N1 v$ V
setup-plot1

6 Q8 @$ M/ O% U4 f# J% l6 I4 B9 Y& i4 Y2 U' j) e  G; g
setup-plot2

( T9 v2 c! L* `( ]7 }, m" Y
- ?0 ^6 ^2 t1 N3 u1 z( i7 Zsetup-plot3

! X4 T/ o* q) r6 u0 a% o. N! K. T$ Aend3 x1 H" F7 |3 D5 c" j( s- q7 x) W' ]
* p0 t- V: r- N" ~9 S( g8 L
;;run time procedures
: b* k" H' K- {7 m" H0 `4 M( X% Q  S5 d, {# I0 L
to go
5 M3 {. r9 N1 c4 P, x. Z. @0 b8 }& o9 K
ask turtles [do-business]
9 a7 S, p9 U' I( L4 F
end
* A/ _' j3 x/ Y$ ?3 N* G9 }- e' F: y2 A; E$ {. I' l/ s9 b
to do-business 7 W3 Z- X+ c1 F! h+ V  ]( |4 [

% h2 D% g0 }4 K* Q5 h# x
! ?+ D  ^4 V) irt random 360

; y9 |% G* Z5 R- H1 J$ K* y- G  v
1 r3 l7 x( A/ z3 m% H$ Rfd 1
4 a0 r. N5 P4 N- d, H" j) x5 O

; ]# C, n& D. A* A- e9 J. R# eifelse(other turtles-here != nobody)[

4 r7 M3 f# d$ B# X
- p7 k6 F1 A6 a  Z0 h  Iset customer one-of other turtles-here

) K! e  D! n" `) v; A* X
' O- b% ~  K, Y  q" b;; set [customer] of customer myself
8 [: C8 ^3 t$ h5 }0 O/ v
/ y( Z5 y$ B( t6 Q
set [trade-record-one] of self item (([who] of customer) - 1)
" K0 d# K1 v3 _8 A  F- g) W[trade-record-all]of self
+ R4 u" V- {  K/ H4 l: o6 C1 R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* v! i! v- t$ R/ X+ |9 u: Y0 l0 d0 ]. {) J* M! U- d3 M
set [trade-record-one] of customer item (([who] of self) - 1)
% Q4 V6 c! m6 F* i, ^( P[trade-record-all]of customer

" j# [7 t, t2 T1 n. u% x8 p4 i& }' \; C
set [trade-record-one-len] of self length [trade-record-one] of self
9 Q. P  e% v5 \6 a1 z6 I$ D
, n" z* H- B! @1 |$ g
set trade-record-current( list (timer) (random money-upper-limit))

. x* [, D0 U! S. ~! m% X' q% S, Z& r( t8 U4 Y& p' I( M
ask self [do-trust]6 c9 h* {( |8 L+ W
;;
先求ij的信任度
, q9 p6 d/ t5 X* i
) W" y$ }1 w. u1 U9 ~if ([trust-ok] of self)
* Q1 A) i' w" j6 N7 ?;;
根据ij的信任度来决定是否与j进行交易[
; D' R+ _1 j% Q. ^% N! Y/ Jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 S3 r: ]! h- L
3 ?" b4 k4 Y+ C8 t2 p8 N
[
! P& v2 l  X$ |4 `7 m5 M1 C

7 ]; L$ B3 N+ Q$ _5 ?do-trade
# Z5 d" [9 R  w+ N6 b
6 b  _4 p) v* R* {# d" V1 f1 W
update-credibility-ijl
" [- T# x( e  X) S! k; ~4 e0 Q

3 A9 ?) K* M7 g, ?2 c1 @0 d: uupdate-credibility-list" t- [  Q' L# q: [( i$ }9 h  ~/ v: d

# i1 D1 B" P2 @2 e5 o% _( t
4 j0 L5 c) Y6 w0 @/ Rupdate-global-reputation-list
" l: i' p3 A( \1 @& {  s

3 u7 x' r; `* d$ N( apoll-class

/ Y, ~7 g* x5 ~; o9 g. d8 P6 Q% k: K7 R- _% b: h$ Q1 b
get-color
7 Z+ x2 G" B9 q+ W9 k

# |5 r: D# |* c) X# j  E) U* v]]6 F# Y# o, x" V/ F, T! T
3 ^* [2 ^8 J4 `) f0 [. v/ g
;;
如果所得的信任度满足条件,则进行交易
" y- d+ E/ t! _" ~$ O3 i6 h+ p3 N- \, g0 |6 A
[
( w# ^, x. P" _/ @4 K2 d  B
  \# i+ P) k# o
rt random 360

+ I6 {7 q4 C" q1 z5 O/ V2 Z- l
4 H' y/ b) H8 l; ufd 1

. h' \3 i9 U' d5 h' U; c2 L6 ?6 Y9 ^( \
]

2 G+ W3 R7 C( I- b  U3 _; T$ Q
( B0 {- t6 `" E* l9 vend
; U$ M+ R4 `# u" z% D: x. y* a
% t( ^; }: d" @, N
to do-trust
5 y% r. Y3 O$ q- I, e, tset trust-ok False
6 e9 g8 L6 l' J" Q: M; Y; U: W! c3 ?

% s: `  T) w) o0 Ulet max-trade-times 0/ P  V* F& d, D% l, b& D# R, l4 }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% Q$ B8 H+ C; d  K$ dlet max-trade-money 0
5 T; ]% @5 A5 kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 F; h8 h& x3 s
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 J5 R1 w7 b, n# `
9 B* I# P7 A' a

3 F, s3 k# @! x! J. X9 Uget-global-proportion0 d2 `& S/ a. ~: u: z4 q
let trust-value; }2 \) ~' f/ d/ d+ c, k9 J6 h0 {
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)
3 Y/ p$ v) f8 s. `! ~% x; M
if(trust-value > trade-trust-value)- R. m* E) o# Q7 U, N8 M8 Y
[set trust-ok true]2 w3 o. y" i  r2 [2 y. U
end6 @  H# ?8 [" t/ \- T2 a

6 D# d- ^! H: Y8 K& s/ M, j3 j9 r( [2 Qto get-global-proportion
# x0 \, f* ^$ w6 P' eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# N% N: E- f+ U
[set global-proportion 0]
' `. @8 F* r) n5 z3 v7 ][let i 0
* B* H/ Z2 E) j. q+ c, d. B, Plet sum-money 0  k# f" d! w) Z7 \$ ?9 a) c2 z
while[ i < people]
; s8 w& U$ [8 O* p[
0 p# H! j" K: ^) |) ]if( length (item i7 R% x- q  }2 C4 a
[trade-record-all] of customer) > 3 )
7 K: v0 ~9 G- J  m% Z
[
- I6 s% ^0 G: g. Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- E2 \7 U' L2 v]9 K+ f2 H5 z4 C% G8 s
]
0 i" H6 j7 a0 M  J9 S+ E0 ?% u% q% Mlet j 0  p. ]- _" K$ n$ @
let note 04 C3 o$ s5 \5 m' H' @9 g
while[ j < people]
5 _, B! c' o+ w/ o, n7 a- D[& H" ^5 O: `3 B$ I1 U; l( w6 Q! n
if( length (item i
; s' q0 s& F/ I! ~[trade-record-all] of customer) > 3 )

$ X% o7 P& X+ M7 R. W' D[
7 j; V* {* I# q2 n. m! wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 Z8 W( R  F# K[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 s) ~. ^2 b7 m* w! T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: T5 |( C) s$ l; |( ~! s  G]/ C7 T+ u0 {! p1 X, G
]7 p( o/ `; x2 r$ p
set global-proportion note
8 W4 O. U) D! w6 d]( k$ S4 h! |9 o0 k3 Q9 H8 v, ?/ p
end
) P0 s, }. V, f2 Z8 z- w  |- l2 N, j# e$ z& m$ H
to do-trade+ G7 E' a" o: ^) u% l
;;
这个过程实际上是给双方作出评价的过程
+ w* \5 ~* _8 |; @3 jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 ]+ A" P# \0 [: ~& z6 v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 q, e5 N" r* h+ b9 Sset trade-record-current lput(timer) trade-record-current
* q) \7 @  U% y;;
评价时间0 n0 {( ?* w/ }$ h7 U" @) a* r
ask myself [0 b& E# w% j1 o
update-local-reputation  q2 ]1 `6 ?' K" R
set trade-record-current lput([local-reputation] of myself) trade-record-current+ Y9 T, I6 v& h
]1 C) o  F& x9 Q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 F7 M5 S+ H5 ~' ~6 L2 n;;
将此次交易的记录加入到trade-record-one
9 Q  J% p6 E8 h/ [9 F4 Hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# S+ T, Z+ y2 t5 c2 y8 jlet note (item 2 trade-record-current )% z: A) y& c2 ~* W- F; D, j6 }# h
set trade-record-current
% K) g' ~, `9 s  U8 \(replace-item 2 trade-record-current (item 3 trade-record-current))

7 b% H9 b9 D) u# L% Hset trade-record-current
2 r9 w3 G, S# m9 O: {/ g( s(replace-item 3 trade-record-current note)
; L2 ^4 O' j  [3 R, L: m/ t+ c6 Z5 |: `1 c0 m' L
" U) l$ R2 X3 U# `
ask customer [
4 ]  v% Q9 ?" a+ ?, u: G% E6 Gupdate-local-reputation& C6 ]- d# x, M, E8 K, c8 V( q" g+ P
set trade-record-current' i  d, a+ F0 [$ o; T" `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- H& W" h) ?5 I5 ?5 c' ]6 \: F: l]
8 k& C9 H4 a" W1 f% F2 A$ L( ~7 w$ P1 d5 A+ `5 q9 B: V% F

4 f# k$ M: T' }7 B& i' Cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ U& `- _& X6 D: U3 `6 e
" a, ], ~) p) f! a& m. V
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; Z% _+ Z- Q* ^4 i;;
将此次交易的记录加入到customertrade-record-all8 i+ R- ]& C1 f) N7 z& e! w  V
end
" |: s4 \$ _  u3 M8 x
* D! V9 S/ I( \. Z# F. Mto update-local-reputation3 J! W8 m$ b& M2 I
set [trade-record-one-len] of myself length [trade-record-one] of myself
: g7 _2 b) d% N2 H
, I: ^8 e! B0 i- M0 c- O' x4 D. A+ t: D
;;if [trade-record-one-len] of myself > 3
1 |9 V" u7 w  b. q" _
update-neighbor-total
2 t' i! `: B' j' v$ c# ?" |;;
更新邻居节点的数目,在此进行! n5 C) V$ ~. ]6 j; a. X8 x0 ^
let i 3
1 n* t; Z! k2 D! ^' r, r- ?let sum-time 0. x  n' ]; i$ e7 O- ?# a1 o+ ^
while[i < [trade-record-one-len] of myself], t+ Z$ P: n7 P' J  v
[
1 {( j4 b' ]: \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 h; z7 Q& g( z- b" d1 h2 h
set i  M1 J6 E/ j& t- i2 z- g& V+ T
( i + 1)

& t0 A* N$ s) T]0 F% G/ G) z0 T6 N1 e1 m3 s
let j 3* h" c4 }/ G: |  S9 w
let sum-money 0; A1 _5 B7 c: a4 X5 Y
while[j < [trade-record-one-len] of myself]3 n8 q3 ]1 u) {5 }4 q$ C# U2 G! C
[8 D% m$ ?. N) I/ m5 o5 j
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)
5 b% A$ g  J# A  [: E! Qset j
# J8 z6 p% V' h. V9 D2 G( j + 1)
$ G3 \' ~% M' ]" n* K
]* k3 ^6 m" L6 T! y, a. _& }& u" f
let k 3
, c$ W% d  C, F# ]; Ulet power 0. H1 \1 y5 ]2 U% O" J# G
let local 0
+ i/ T- o" E; A$ k0 W; m( A# Twhile [k <[trade-record-one-len] of myself]
. U# p2 V3 h. f/ h* r" T[
1 J# A4 g! v/ m& D6 [& \, Hset 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) ; r% L$ f" d( w3 Y) J3 f
set k (k + 1)/ ^+ N: v3 H- F& q7 A) j6 f% V
]
) S; S! m  V  w9 [5 b3 k/ Kset [local-reputation] of myself (local)
  n# ^5 u+ k7 _, G% Pend
. R6 Q1 W8 \7 @+ U
8 _, b6 n: V" W+ S* ~0 y5 pto update-neighbor-total
* |0 ^. q4 ~  x0 K7 B3 ?
# u" L6 w6 }  ^6 }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. F9 ^2 D7 l2 j8 O) i4 k$ v

5 C% b4 q) V# B5 i) N! ?3 g
) N  I: J1 h, a+ O
end
  T2 B/ s) {& a; S. X' K. E$ C2 X: h
to update-credibility-ijl
$ V1 L0 S8 p1 a( Q
. N8 J6 Z- e. J) |1 O- n) Q5 J, X;;
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 R& [0 W& K) x- e5 `3 \let l 0
% I6 `$ R1 W+ J' Ywhile[ l < people ]" {" L7 z% s* c, s6 A3 I% D
;;
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
' W3 A- o9 p8 H0 Y[
# |: y) u" }; K7 Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 |$ X) R7 I. e/ X1 w1 qif (trade-record-one-j-l-len > 3)
% t8 V" A, @% V2 E' V2 G4 h[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-one6 E, x* ~, o* V. \: k& \: k
let i 3$ s( v. @  K) T
let sum-time 0
4 n% W) f2 w1 s3 m) wwhile[i < trade-record-one-len]
! v# c4 s# a. G$ J[
; y4 a. M' Q- T+ ]2 rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, z( c1 q% I2 l; fset i
, s) z, m* j# s( i + 1)
; @, E2 i+ X4 U0 Y2 G0 |# N
]
. Y, Y  F% e+ J* c/ }3 W: |  x& m$ `let credibility-i-j-l 0$ v: B5 S4 C1 `' }% H
;;i
评价(jjl的评价)& y3 @( J3 P$ }0 A% L
let j 3
% U0 B/ _3 ^$ |let k 4
1 ]# n0 T7 d$ [4 Y, rwhile[j < trade-record-one-len]% a' j4 C4 m* O- a) `
[
( G+ s, ^, \7 P) C+ v. Kwhile [((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
5 K; l% a/ E. [1 c$ F* D; lset 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)2 G* \/ _4 r+ R- w: |0 U" [& G
set j0 j) y" b) L& W" @% b/ b2 _
( j + 1)

; c6 U/ b  o, ]3 `]
! g9 F3 p, \  S$ U  C9 p# bset [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 ))
0 [& M. X" Y1 a! S
, {  l0 Q" @) s) v8 b6 o- v, I7 y
' H' G6 _9 ^+ X. y# v; e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; H+ E  I6 M7 [/ D;;
及时更新il的评价质量的评价
6 L* i! a- @9 g* p# Q1 \- Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) X8 f7 W2 _1 Yset l (l + 1); C- a7 s5 J; ?; M& ^- M1 ]
]
( ^7 P! Z$ C4 N/ W( M& bend
; Z1 ]# Y3 x/ X3 b  S% C
" Q7 I: N* F4 \1 l& b5 fto update-credibility-list
% e2 y" [. A, b% i8 slet i 0
  [& Y& }( {& U% w: c: kwhile[i < people]4 r  N7 g! D6 D5 X
[% o5 D1 u) ]0 h7 q' b0 p
let j 0
1 U6 n9 |8 Z6 b! M. N# J) ~8 ulet note 0- |. {( I( _" m/ D$ |2 ^
let k 0
! W: p6 H; l5 B% R;;
计作出过评价的邻居节点的数目9 U9 Z6 X) S" j9 g; Z, p1 I) q! y! w- N
while[j < people]3 @* ?1 t9 c6 w
[
2 w; }5 c/ |8 k8 \/ j# h: R; Iif (item j( [credibility] of turtle (i + 1)) != -1)
& A, q7 A/ m: V3 p7 Q& z$ B- U/ b;;
判断是否给本turtle的评价质量做出过评价的节点  _% @( b( y  G/ {3 D
[set note (note + item j ([credibility]of turtle (i + 1)))% D. L% F# i% ^) J0 ]
;;*(exp (-(people - 2)))/(people - 2))]

/ h( G: p, i8 ^$ [; V5 Fset k (k + 1)- O0 q; @( Z1 M3 }& P9 k
]
- j8 e7 U- \  m8 w8 \set j (j + 1)5 A2 E7 [0 Y1 t7 _$ x3 J
]
/ h, U2 t' o8 ^% o) P$ I' {set note (note *(exp (- (1 / k)))/ k)
$ U* m- V7 K; qset credibility-list (replace-item i credibility-list note)
5 m" E) B9 o$ F' x- V; N+ kset i (i + 1)
" r" W+ ?% w4 \2 q$ [  E0 C]6 S% k0 u, e. A& _4 [$ o( c
end
: `' z1 h. C) W( ^8 Y6 m% K& c/ H
6 Q& X8 t  l; P+ Mto update-global-reputation-list
% {$ p, i* _, x: Flet j 0
1 M; R0 ]& y* n% y! X! C( l8 iwhile[j < people]
5 [8 y$ n! U  T: {! L! t+ T[& n1 x/ }5 U& z/ X
let new 0
; s- N7 w! q0 o% r;;
暂存新的一个全局声誉# U( K& z8 @& l
let i 01 e$ c( ?7 j! Z- R/ y1 M
let sum-money 0
  k2 ~! V  o  t4 h: `. Ulet credibility-money 0
$ L! _6 n& X) S8 @" qwhile [i < people]' M/ n% `1 A2 ~, L- I8 K. C8 m
[# S5 B7 D; X; p1 W& ?+ k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# C1 v& `" `" F; q' v6 P, P9 G* S( pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- `3 y. G1 `  T$ P1 fset i (i + 1)3 F6 f) C7 Z1 A* x8 m: O
]
, [" \6 X% b8 o% zlet k 0: a; {% n- s& z% }: D+ I/ F" y
let new1 0
( ~2 r! Q4 J$ u1 M( hwhile [k < people]
" L' P: Z4 q) H5 Y  ][
6 e- S1 O! V( s) @3 R5 Dset 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 i. X- q; U2 _8 M0 X
set k (k + 1)
+ f4 `; _% I8 [' H1 y]& ^( Q5 B. Q3 w8 Z$ C# @7 U
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! B* g4 W+ i! Y( W$ [5 n
set global-reputation-list (replace-item j global-reputation-list new)) z- U% [& E$ {3 ~5 k
set j (j + 1)
$ J! O* f: z0 l4 b6 g]7 I- l( }$ A1 Y
end, N6 F% `: G$ D! u6 Q
0 M% e, u* U8 I' j# N# |
4 _9 D8 a! [0 ^1 v

# F1 y2 i$ {* H/ B1 y1 v7 ]to get-color3 N- J8 I6 V+ F7 B# r

4 {8 X5 K; X( p: eset color blue
) j: P2 k. O& Y
end" i. {2 K5 _0 x' N8 R2 X
$ ^9 P; @! Z- q2 c2 h$ y5 \
to poll-class2 {: i7 r5 l: [* u( [
end
; N6 b' t- R1 y* z& \# M- h' q! [
3 p, H' l0 ]  _( ~1 Oto setup-plot1) `' p6 b4 o- Q7 B- ^
1 c. `4 l9 t7 Y! p6 Y
set-current-plot "Trends-of-Local-reputation"
1 b3 Z; K! s, K% x2 C7 T8 \
$ b8 T, h. i1 n- |5 g# l# S" d- ~
set-plot-x-range 0 xmax

2 v" g  j  [% B$ e: S5 K; Y4 n1 y2 F4 n" `8 j" ]
set-plot-y-range 0.0 ymax
' L, w0 }, H' n. i5 S* d
end1 }0 V! {; V5 Z% U( D9 h& H3 R- i

0 K) W. s  h" Y+ I: Rto setup-plot2+ z9 c! i& k, p$ \/ |+ P# ?
' I6 U2 t+ L8 p  U$ ~, |
set-current-plot "Trends-of-global-reputation"

# |- S- D  X4 U9 h8 z' ^: C5 w, Z7 p0 s# M% r$ T- c! Y( [; H$ R
set-plot-x-range 0 xmax

& h% z& B; u0 T  e1 N8 y. D; t
, t# L1 k: A7 H- z* f. _set-plot-y-range 0.0 ymax

5 o3 I1 L) K- e$ s8 _end$ `9 v, Y, V4 d
5 [/ X$ l1 j8 r
to setup-plot3/ q8 m" R& F' C; l) `6 \
! s8 j3 l/ `0 s3 Q7 K
set-current-plot "Trends-of-credibility"
- |- I3 f% R" }+ n& P

: e: K, U4 h. U8 Vset-plot-x-range 0 xmax
# e/ j8 V0 f8 K' @
6 O4 z) o+ |3 i* a& |# f
set-plot-y-range 0.0 ymax

, y8 X$ b% n' aend
, x- w' S$ H" S- u+ r
: V/ y) [* i$ xto do-plots
3 i. J) O+ v% P, K7 Q* lset-current-plot "Trends-of-Local-reputation"
6 \; Q* F2 j  Kset-current-plot-pen "Honest service"$ ]' @! L1 c% u: C$ f
end
% O5 Z& @0 ?( r0 _8 b: R
; J' c; o" A' N, \9 o+ k[ 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.6 x- X, @+ R  L& I: {1 U' P

0 B! @0 k* h2 y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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