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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:' P% m, ~$ `( t+ [& u
to do-business 1 p" d* p  }% m1 H
rt random 360
& j0 \9 O% x* \: k fd 18 Q! p: j( K# D% Y! |
ifelse(other turtles-here != nobody)[  d9 i- ~+ D9 g  a; r
   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./ Q$ O  R  s; t: s4 H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ G! ~5 Z4 S7 i" M/ Q: r3 O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ U6 ~  k1 {% A/ k+ {
   set [trade-record-one-len] of self length [trade-record-one] of self
2 S9 ?# [) U9 H& `7 T   set trade-record-current( list (timer) (random money-upper-limit))* O! E: T( o; `9 i
' @4 {% c4 @' h; [/ y+ p: X! D5 c3 y. ]1 Z8 v
问题的提示如下:9 }, `' j+ a3 _

& [# [! [0 W1 i& S6 C) u  Xerror while turtle 50 running OF in procedure DO-BUSINESS1 m% f0 [6 V+ e/ g$ S) z
  called by procedure GO2 x: `3 g, U0 Z3 D" v9 |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  S/ v8 u9 B+ }2 U( E5 r! ?
(halted running of go); A7 k& j3 t' V6 l# r

3 h8 a+ X  }( F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~~
: a6 D5 H; K9 V& d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
$ S! Y8 _/ s' N* B7 T1 ?globals[
; r* i' ]  ?- k% bxmax
% l. M& V$ @2 Gymax; A) X) o2 x7 F
global-reputation-list
; q9 ]9 L3 i9 a( }& T9 ?" y& j- r7 O) j+ s0 k
;;
每一个turtle的全局声誉都存在此LIST1 o2 E9 g' w, F# ~
credibility-list
/ v) y: m; I" M. i& u;;
每一个turtle的评价可信度
: ^, f* n) X, i/ ~, w  `honest-service( J2 ]  L; o/ F8 w+ C' h3 }! d
unhonest-service
# N5 S# O" L' v1 h( b5 U! W. H$ |oscillation; J1 B/ {6 K. E
rand-dynamic
- I1 X2 m* C0 w]5 M" C4 d4 g! f0 l2 [$ ?+ \

& [' S+ S* B8 W0 aturtles-own[
4 ?, z5 r/ N1 A% |trade-record-all
* n; g0 p/ P& ^/ m6 ~( f;;a list of lists,
trade-record-one组成; K, U6 |1 @! O( ~. p  d6 N
trade-record-one$ b" u5 e! c! b: K( U
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, Z- t  K8 s7 U+ x% f1 E4 ?" y

5 q. e. g! S( J;;[
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]]
5 y' O  ~* u2 f7 n- rtrade-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 N( j% g% A6 N. o2 D& G# E$ f5 t
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 ^% ~. a4 q7 u- V0 `% a% T
neighbor-total: y) f4 U- {: a5 g3 M" ~, j6 S2 t2 l
;;
记录该turtle的邻居节点的数目( G* Q' I* p( V& L) e) l
trade-time
% J/ _, }7 p- k, g, ?% y* C6 ?;;
当前发生交易的turtle的交易时间
# z! e3 r" T. ?1 W5 v- kappraise-give3 F/ h5 F' o% j1 D* c. J$ @" p
;;
当前发生交易时给出的评价
* c6 B' F* y! _appraise-receive% B* P( ~8 [% A6 P' Z
;;
当前发生交易时收到的评价
( v, N' q4 U# C) {/ j1 R9 Kappraise-time! `3 x' d! R, Z5 [  L3 R3 f+ i8 g9 m
;;
当前发生交易时的评价时间& J9 F. K( O1 [# i  t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' T7 y2 s4 P4 ?  ^; d5 Y& ^trade-times-total& g0 `$ w4 `( I0 `6 q+ J4 v5 H
;;
与当前turtle的交易总次数% d$ q) u) s5 U  K
trade-money-total9 E+ O: I2 \, E- \/ g% B
;;
与当前turtle的交易总金额: ?  y# C5 U+ n+ N8 C6 D
local-reputation# i, |5 P$ @) o3 z2 k# y" g
global-reputation
) D' y; Y" ?/ G( t0 J( K; B1 vcredibility
) L7 _( I* e* i! W/ Y;;
评价可信度,每次交易后都需要更新& X% [8 ~0 k) H  X+ t
credibility-all
$ m; h1 q4 _) m" w' B$ l8 B;;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
  f4 _) L- }- W# X4 ~
  \: J" J: p: q2 N; r& F  _2 U* _( N;;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0.54 G2 v$ z! R: J, l! _, @( s
credibility-one
! @6 |5 q) D! ]1 q;;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# Z5 d# b7 K' U0 {6 {' X
global-proportion; o2 F( U3 q* [4 m! k
customer
" p8 o- w+ `- O8 S/ zcustomer-no/ P/ U, e1 c; U9 F4 Y( s
trust-ok& J1 r  B6 J1 @
trade-record-one-len;;trade-record-one的长度
0 `) V/ Y6 F4 j5 M  D8 |+ @& a]
) i+ |  ?1 X$ Y$ m+ D6 p7 a/ |1 H# G6 B- T8 @
;;setup procedure
% ?' z3 g; e& F: L1 l) x4 }$ m( S
to setup+ _+ V3 W  x0 m9 ?/ N  i0 t: Y
- M: M3 D2 n8 _: Q5 h1 M
ca

9 Y/ v2 K* x$ J2 d! {2 O
2 [5 ~/ U, d- y0 x' e6 Oinitialize-settings

# K3 F& ~* l2 m/ b
9 _- Q6 v4 h$ a* l- \! dcrt people [setup-turtles]
8 d. F. `& h$ D$ q: W6 y+ ^

: e7 G1 ]( u. ]* U" `6 D( ~reset-timer
% N" ]+ O# o) L7 A- s

4 P7 s& h% p, x0 S4 ipoll-class
! N/ y. O$ Y6 A: `# P

  T. z  g( z% U* v" ksetup-plots
2 A+ J8 b+ H: b/ q# c
3 R1 M( Z: _& p% s0 N  P
do-plots
. R+ _/ u/ ~0 Y4 o
end
. g- f% S4 x2 _' }2 Y% h6 p: ~- D0 H
: M8 L: W2 k& p0 `+ D( Rto initialize-settings3 Q7 z+ a4 k) Z4 h3 G
4 x) d) F7 A$ d& B  H
set global-reputation-list []
& v$ T0 ?" P6 ~8 t/ X: B- {7 t

3 _% O( s. N+ ~' bset credibility-list n-values people [0.5]

+ x' p9 L( |6 `0 G0 F* R1 a; Y  r- b# P1 ^, C6 S
set honest-service 0

9 }6 E# d/ `+ |  F+ p
0 ~: G7 s1 v) d; ~set unhonest-service 0
  Z! @0 |1 Y# C4 m4 f* N

- U8 p8 q  x& Oset oscillation 0

: G* J9 C, N5 g$ u! ~# h7 A- Q! j
set rand-dynamic 0

6 H1 z% L4 _! m/ W3 tend
" R, n$ D& \. c
8 a* ~9 a2 J" }0 x6 lto setup-turtles
3 Q# m! [! q9 E1 jset shape "person"
$ M* T( Q' u* C6 C# Csetxy random-xcor random-ycor# K% P$ |3 q5 E8 }3 w
set trade-record-one []
- a! p) w  q& E) o- [+ I
3 K' p9 a) {+ w1 x3 L) }" G, e3 L
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 W! f2 c  r4 y; R) c$ Z# d
' Y( j$ i) F8 G
set trade-record-current []
! [& O" l% ]+ C/ \$ x. o5 Yset credibility-receive []6 H! O& J& Q  `0 R+ e
set local-reputation 0.5
0 w3 g) ~% h: v6 q* F- Gset neighbor-total 0
+ @6 a% x1 M* Y1 V4 p3 j9 Zset trade-times-total 0
6 o; P- r6 d- ~$ A! T' n$ dset trade-money-total 00 k1 j" b# A, u9 _9 U3 u) [
set customer nobody
6 |7 x( x  L( a6 K- z% O- qset credibility-all n-values people [creat-credibility]
0 ]/ H$ |. U0 i- `; H  _set credibility n-values people [-1]2 `. C# n  T7 P! \9 o
get-color
6 w; t2 F- E6 p( d( ?" [
8 ^. m# E2 p" @- A3 @, a8 e" ^  i
end
7 F# i5 D1 j3 w' m+ n8 v* T/ H3 y2 |" p
to-report creat-credibility$ ^: w& D; E% K! x3 b( r! p, d% b8 o0 H
report n-values people [0.5]
' q6 M8 X; T; \( c) ]end0 n! U% N0 s% S9 H9 |- d. k$ Q
! G! g4 u) T2 t1 v
to setup-plots4 ], \. g) I5 M

* d) ?1 g1 D/ x* Z4 Y* Tset xmax 30

3 d* A) }& t1 }+ l- ]5 i$ @5 G% u8 ~3 u! F4 w/ t
set ymax 1.0
3 r/ a, }; N- g' U
4 \; w, G* R1 ^
clear-all-plots
5 ^% d" \$ X5 H& j- H/ p" a

/ J  @, y# Z# osetup-plot1
5 t8 z8 N/ u, F% e
) d" k7 h2 T  h; z8 y/ I1 g
setup-plot2

& b4 a( r. d1 r; l3 R. S# [. G
4 o  g# r9 b& _2 esetup-plot3
* @# T8 r: S( C  n
end
4 d; k( @6 M# k8 k! W* ]/ i* S. [4 i+ }# b$ J  X+ m- \
;;run time procedures4 w9 T) ^& s4 \/ j
* g0 ^- m9 m5 t: F* T! z* l
to go3 W  v: |  g5 l
* `. x/ S% k- S$ b+ R; C: s
ask turtles [do-business]

& c: A5 M5 h& y  [end
5 {- V  y6 f& _0 i7 h( e1 |1 ?4 h' t$ S
to do-business 6 q" k. B; k$ ^7 ?( Q9 V" F/ j! g
# m5 P6 b  @$ s9 k! I- K* ^
; |0 P. V! r) ^5 I9 X2 b
rt random 360
/ o) j9 f- ]1 v/ U/ `, \% x; I! m
2 p9 [3 M# L: Z; S
fd 1
, E+ h0 R  E5 c' n, |" ^2 ~/ b

# S' U5 d6 p5 x; cifelse(other turtles-here != nobody)[
( l3 ]- e, ~" C4 n9 S+ k
9 G0 R% I5 u, R% j3 \2 Q. Y
set customer one-of other turtles-here
& Z5 }0 {5 k4 W: J' G9 y
! N$ @1 k# `$ A. b$ `) Q
;; set [customer] of customer myself

( t1 s) v( o, x! k. w4 r
/ @( e* B/ q6 I  x9 pset [trade-record-one] of self item (([who] of customer) - 1): A5 v- u  ]( }
[trade-record-all]of self+ a! F$ \- f% F8 c( F6 w% e; q3 h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" G2 Z/ d, b: ?" h
0 J# S/ T3 a1 t; }/ g6 _
set [trade-record-one] of customer item (([who] of self) - 1)* C8 _7 y! C- V! p+ T
[trade-record-all]of customer
% o. F. g' R( z  c: w
- V8 Q/ G3 \( ]3 f: ~% s
set [trade-record-one-len] of self length [trade-record-one] of self
2 X  C) n: D  [% S, C

- w9 l0 u6 w$ E: L7 ^" lset trade-record-current( list (timer) (random money-upper-limit))
, h2 s# n9 a! u( ^4 H

; ^/ u" W( o. g- kask self [do-trust]
- \& R6 @2 c- o  E# f;;
先求ij的信任度
5 Q$ o$ X$ [( ^: h4 X6 V" G3 c/ \- h' A
if ([trust-ok] of self)
8 _' ^0 O5 s! d% V5 ?8 K2 R- K. u;;
根据ij的信任度来决定是否与j进行交易[8 r  a/ h: q6 V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ @7 T; n% P6 B' G  ~$ w
% a1 I# x7 a( u, ^[

. g& [9 n7 m4 n2 T; o2 @9 N+ x6 x$ b+ g: |1 m0 o3 k- s
do-trade

+ Z4 X' N& j" w- \% Q7 A9 c6 j$ E
update-credibility-ijl

7 l: R  F* J0 R( J" Y$ x, d" d+ J2 n" N& r+ g! _& z
update-credibility-list
: V2 N5 l9 c" c! P
) R7 ^4 F) D. D/ k  S8 h

, O2 n3 e- S3 ^0 Jupdate-global-reputation-list

6 K6 W) [$ ~. k0 v
* s  y. Y4 m2 I7 I$ v4 [) Vpoll-class
" y9 B6 U* g* N7 Y" h# E0 [  ~

" q5 G) Z& ~$ z- M6 u( }+ yget-color
; f* l6 U. R, T( P1 i

4 ^, j; O+ e# u) Y* m/ d! s3 X]]5 {- X- v& O8 c- K, G

* c0 ?  R: Z% S- V;;
如果所得的信任度满足条件,则进行交易
, H9 n7 p# |+ t
* Q" m) e& V8 S2 e$ m[
1 f! f, G( S. U
6 \( m0 K1 k  s
rt random 360
4 }& A) [0 z) I7 D9 \
! x  l" b% g" U& T
fd 1

( b- ^) L' R% M6 C/ d8 L; W5 V( J# |/ ]# c5 ]
]
1 Q& l" j" Q9 D
& t3 E* u- m0 h" _5 s: l) l8 s
end

+ F+ T& v1 p3 X, X
+ e, D  ~) W; t! S/ ]- B, Zto do-trust . c* n% u6 {" ]
set trust-ok False
9 m" U- B7 i( G; A! B# e
) J$ j/ [8 j8 S( X/ R
1 @3 R, p- l7 p4 B2 B% o
let max-trade-times 0
! Q- x# S2 T" x8 A) k. m5 A8 Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# x( _# z, c2 K( N1 }
let max-trade-money 05 c' I0 N+ B2 Q. u* W
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 [  ]* c  F2 m" F9 a
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 A7 B" H% f  Q$ _- z
- c( ]& t/ ~$ h. t  [) {

: H+ ?" ~9 v8 M' h' Y1 mget-global-proportion
! o. z  _. i7 U4 b8 z- ylet trust-value/ \- D) {. m% e* @) F. {% P
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

$ ?* Y& O# m. a3 Aif(trust-value > trade-trust-value). I, D) a/ }/ X* [$ T/ w6 v
[set trust-ok true]
1 @; @8 [& O# @7 u2 z' t/ eend
4 k! e; P1 `. f
' t' C) B% N' V3 n* ^: ^to get-global-proportion. i3 s1 a- F" R$ J) I3 J, x. c% ?
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  W% }- I/ w9 b) j$ G[set global-proportion 0]. H* \" E6 T6 m! {  O3 j0 V0 D- v
[let i 0# u% C/ j- d8 o! V) s
let sum-money 0
4 w" t& Q! {- t- mwhile[ i < people]
5 r0 `" q. H+ M1 G% h$ l" j$ g[# D  |. s0 A) e5 o5 E$ t6 R8 \8 |
if( length (item i
( k% p% ]3 P6 r, s" U, s[trade-record-all] of customer) > 3 )
" z6 v, J3 n1 i9 }9 G  c2 J& n, E! ^
[; ?' e+ G. L& C+ _: r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); W; f; s9 M$ U7 \1 e1 x! g! ]
]
! C) W4 M; R0 V6 `! \]
: D; n: C) V' Y% Blet j 08 ]' ~( z9 v+ D/ P
let note 0
% b7 F- _* i* S$ n9 @while[ j < people]8 a7 ~8 \+ l" J4 U5 I; S' h, H) b( [
[0 a1 @: }0 O& N9 c. A& m
if( length (item i1 o* v, e/ C& i, g' J" P
[trade-record-all] of customer) > 3 )

* G4 R( t: S& }0 h0 l. Y[
  z& q4 p5 a' D% z9 u" u" oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ G+ r3 w' \$ C0 i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) Q, t: T" T4 q' w3 K% Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 |% c! e' r3 C' {]
8 F: o( g7 W! r+ l$ x: u# H]
, u5 {" F, j. A  M+ L' F3 tset global-proportion note, C( c2 ^% F5 \9 [: {
]
% F* s  ^9 k* V4 i9 a- tend
# O  s8 G: g  M# m
* O. b. A0 \% Q4 f( ]2 f/ G$ j& D$ vto do-trade( x$ G0 r+ Y7 l
;;
这个过程实际上是给双方作出评价的过程2 U, Y& E# ?0 y8 Z5 ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 v9 h& a% ?' K3 O3 F$ m  g* _: `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  G* w( A! l; V  N5 f' Z1 vset trade-record-current lput(timer) trade-record-current
/ s  n5 |: @* ?9 a! c7 K# A9 S;;
评价时间
% q+ z" x! Y7 `  _ask myself [
) J" O7 |2 i! H) W% n4 }update-local-reputation
- p% W$ X% A, w" l/ I9 y* J1 {# c0 Jset trade-record-current lput([local-reputation] of myself) trade-record-current6 k; M9 d+ A* {2 |" ]' S$ A, {7 M
]( b% C, k4 E! ^2 X$ T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 D0 E# I' i: n;;
将此次交易的记录加入到trade-record-one1 k7 C: {3 N! |3 N  O& }' y, Z+ O" ^
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 v* _3 t$ G) D+ v; g% M- \let note (item 2 trade-record-current )
* r: U! ]' i1 p* t6 t8 uset trade-record-current, t* X" d. g& h7 v; A5 b) B
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 f  N# t+ o4 d1 P. T3 W2 Zset trade-record-current
9 Q- H" Z3 _0 M% X$ i) m( M(replace-item 3 trade-record-current note): M& [$ ?+ L8 h& a: C& A6 l

- H) e1 n( A6 _* L' q
7 f$ {2 m& N/ k, ?
ask customer [2 s# G; z0 Z& i' ~) ]) Z- h$ d: n
update-local-reputation* ^' X4 ^6 c0 g( ]0 P% C7 `1 T; X
set trade-record-current
/ X1 ]9 l+ K! z2 H. B2 D* w7 L(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- @- _: `; E, I$ y]3 r9 c  Q1 M& g% ]+ s
. \* d2 ~/ Z0 O+ d

$ U' U2 e2 Q2 }set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 c' y8 u0 {& a; Z- S; X
% K8 d: Y" q; a' k" i0 d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! |- B4 W/ J4 k; E* e- G4 y4 g;;
将此次交易的记录加入到customertrade-record-all3 d, k+ S1 H6 N2 h. Y7 T
end( h" z, g1 K# `2 E7 K

6 H: S0 F( K+ l6 q! V2 B+ uto update-local-reputation/ H$ M% q$ w* T$ V1 i$ |! c  V; v
set [trade-record-one-len] of myself length [trade-record-one] of myself; m( T3 L# {' _7 R7 u
% q/ [- c) V, X( o6 d  D! B5 I
3 b" l1 P% p* v9 x8 F
;;if [trade-record-one-len] of myself > 3

& v! _8 }% u& ?2 K( c" F4 o# ]update-neighbor-total9 z" y" t' C2 N# [! ?/ E+ j
;;
更新邻居节点的数目,在此进行
1 R( U; J; I! y/ Wlet i 3) v/ J. W' @2 [4 w1 w+ @
let sum-time 0
- k* Z3 s5 s: I. Wwhile[i < [trade-record-one-len] of myself]+ X2 @: h4 \6 f; s% [5 ]( ^
[6 \! T( f/ ]# i# @, J* C
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- z' E5 e  w! V* n/ P
set i  I. M  ^- G2 ]+ J
( i + 1)
' C* J; {) [6 E: N3 T6 S3 e0 ^
]
9 h+ a! l0 k  A) N) b0 Jlet j 3) _' U3 G: D; p$ G7 I& S
let sum-money 0
1 b# j2 g( H: C' L" U$ h; K, mwhile[j < [trade-record-one-len] of myself]
, z& Y( f# y$ v) t[
' P4 T/ L% `" s6 T) C# \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 y: H3 |9 a/ oset j8 q. d& M7 I! v3 p1 D$ \' \9 @
( j + 1)
. p8 K5 l; ^/ m. K6 f
]
/ @9 j2 Y) b7 v! b  T* Y5 m( jlet k 3
3 `1 r0 A$ c7 O, C$ x6 o' e) A) ^let power 0: R5 h+ l! M7 @
let local 0
- O2 X$ z; o0 Y/ z0 Ywhile [k <[trade-record-one-len] of myself]
9 u" Y6 C& Y( K5 [& q[$ o/ \/ H2 j. K
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) ) {: h; e0 h/ E4 r5 b0 e4 e
set k (k + 1)
$ U9 u: N! N% k; d0 y" v' c]! \7 O% I6 P8 J7 W' V/ i9 \
set [local-reputation] of myself (local)- ~7 @# p: }6 _9 G8 z
end! ?4 H2 g; c2 N

+ Y0 D. ]" r1 j% M0 tto update-neighbor-total
+ _; q; P( n: t1 a
& W, B$ {% M  Y: ]if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 ]4 c' ]* l! E  E& x9 r
2 `! F* g9 u9 R5 O: q: d

1 `' ~) C$ A. S4 c/ Send0 ~0 |% M' ]9 a' F3 i4 X
: t( Y) g& O% }
to update-credibility-ijl # b) ]: o! I* _% q
: a* w9 C5 l( }9 l% K
;;
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 Z5 W; h$ b9 J+ r8 glet l 0
# j, c8 W2 p* K& cwhile[ l < people ]0 m5 O* l! v# }) `& C$ e2 p
;;
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
. f& e2 H, f2 L) T7 c( Q  W[3 k8 ~# r( ~# H8 j7 ~
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( e7 e% }' t% Z5 X3 k& n2 tif (trade-record-one-j-l-len > 3)
* S/ e4 k4 i4 _+ @! R- ^[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" }$ I. v) P5 _, H: |& ^: h) ?. I6 H
let i 3
$ |* M; g6 m3 G  f6 Ulet sum-time 04 G/ r8 B6 B: R1 e; E6 p8 Y
while[i < trade-record-one-len]
/ q+ r& T- D$ r- w9 O  s3 ][
2 Z% J9 l: J) {8 C! f3 F' y. dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- @1 k6 q, x! B! O) C  |: M8 [
set i
2 h2 _8 C7 [7 n; C* y% ~4 @( i + 1)

9 _5 f# q( B% N]4 n* ?% N6 |* r
let credibility-i-j-l 0
. L5 k, U2 a/ t;;i
评价(jjl的评价)) n% K, l- J& e. \+ `5 {, v. V3 k
let j 3
- i) y2 \+ g$ i8 m5 s- q# z9 f0 w& G; Ulet k 4
2 t! ?1 |5 a) a6 W+ rwhile[j < trade-record-one-len]
/ {; }, Z) M1 Y. U: l' L, f4 t[( Z9 Y- a2 S, D) [. m7 ^6 w; \7 i
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉' }# r( ]- M, Y* u. R2 M2 |
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)
' z$ N" e8 V& A9 V+ S. Eset j* n/ r/ M9 |$ n1 Z
( j + 1)

. M% q* }  T" ~4 ]3 Z]
/ p  n$ i) z7 ?/ ?8 v) Wset [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 ))5 Q5 v* U& W( s

: ?) H' U+ f2 C

( _* D. e: R: @3 `, N6 A! plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: g" E) M4 M4 m1 Y; R% N2 g;;
及时更新il的评价质量的评价
7 `3 ~6 W* s6 }! yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 ]6 ]8 }6 d2 M" y# l* C
set l (l + 1)' w# w* R& R9 ]- h6 s& i
]8 f" }: k0 }( R+ l% I( [* D6 [
end* p4 C' O2 p4 j" Z* v7 X: D1 ]
3 B& Q3 \! A( v/ ?  ?
to update-credibility-list/ n  c, Y' V( e9 i
let i 0
$ A5 \. c) b/ n: Owhile[i < people]; M: O) Y4 p  M2 M: X# h" E
[
- u6 s+ c7 H* G! G! F7 z, Dlet j 0
7 S# e& x: t: a: a# Llet note 0
4 |; t7 l# L7 L. J2 P) Dlet k 0
. z; l; |( a/ ~$ w! k* t" C;;
计作出过评价的邻居节点的数目+ t2 U6 S# m5 c2 {% T7 c' |  {
while[j < people]
% _& Z1 [5 K: W. B[
5 E3 v$ y& G) ^if (item j( [credibility] of turtle (i + 1)) != -1)) L- o0 V5 [: F( X! x& n7 ~
;;
判断是否给本turtle的评价质量做出过评价的节点0 p6 L* P0 ^) f, C* y2 ~
[set note (note + item j ([credibility]of turtle (i + 1)))9 r% u7 Z  \4 A
;;*(exp (-(people - 2)))/(people - 2))]
2 A  t6 s  _) @( t* r6 w
set k (k + 1)4 P" A: G6 `, @4 D
]  H: \! Y: h  Q  r0 Z
set j (j + 1)! d1 [4 o% }' G% [  S
]8 u( R) b" }; d
set note (note *(exp (- (1 / k)))/ k)
: T0 ^+ @- J4 w2 fset credibility-list (replace-item i credibility-list note)) K7 L5 y- @& P: F' |3 f
set i (i + 1)
" q& B, P. \$ b$ j8 d: i]: w1 J$ [3 S8 K; ~7 K. t2 W
end
: g) f: ]& Q/ z. N+ J
8 V$ [- I& c- H2 t0 Nto update-global-reputation-list7 b+ Y/ L0 d+ s; }! a
let j 0
# P8 C* B. A/ M! hwhile[j < people]
0 A" i5 I: Q! f3 J5 N# E  x[. g: z" G7 a/ ^+ _3 w+ s0 T. |1 ?
let new 0
  a& C3 u- y4 x& w;;
暂存新的一个全局声誉
9 o6 K+ e4 a& C& t! y, w9 Qlet i 0
& o! f: i. i, W( z: v  }/ klet sum-money 0# [( j7 P* ~7 M2 C, |) y
let credibility-money 0
" ^4 H! d5 `3 G8 t( w6 w& ^6 }while [i < people]3 ~9 {1 y% Q' W; X: N7 P
[
! t* }- D- i7 }- ?# O' ]5 nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# t! S/ y  q# }) _8 }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ }6 w7 L" i7 Y% ?7 G( U+ fset i (i + 1)
3 o% z+ w0 V% A& h( b6 W]" @# C1 h0 H/ k7 U3 ~! r  V* w5 h# ]+ B
let k 0
9 u" c8 a9 ^2 j7 f* llet new1 0
8 u5 l6 }" R1 v" d* }' V  \while [k < people]9 [3 l) F! @/ o# k/ Y: I! d% C
[7 ^  q/ ~) V2 S5 l2 r# m3 x
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)
( t: ~+ Y! J" D! a9 V& ]5 p4 Eset k (k + 1)
( ^  }7 o" a5 `]
& S' ~" n6 K; n" ^' f1 p5 {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 s$ @: T5 B7 ]* Q# i# k0 nset global-reputation-list (replace-item j global-reputation-list new)3 ]( V2 W! _, A6 m9 M
set j (j + 1)
$ f, T  ~+ B% U8 s; m]8 n% o' c% M: C  ?7 X3 A- u) j0 t
end; f3 H8 f+ ]/ ~5 z/ w# ~

- U4 m4 _( @2 y1 h; Y& ^1 T" u, F( `* o
/ R4 f5 `, F" r& J
to get-color3 g9 {# o; ^/ Q
7 |' E: F' Z! N; I, e/ x
set color blue

. Z) K5 j, w% Dend; T' R! Y) ^6 x8 w0 o
1 l4 _$ _: D5 z+ D
to poll-class
- K' H# h! m9 R/ ]& yend7 P( {: ?2 B. a/ X; ^  A0 ?

& L  v/ B* S% S! qto setup-plot1! }/ o& L% W: h8 V* G+ Y
5 ~/ F$ r8 [- P  ^* i+ x
set-current-plot "Trends-of-Local-reputation"

. C: I. n8 h5 \9 |# x% m2 `3 n3 x8 n3 ^; f8 E  x; e- _
set-plot-x-range 0 xmax
5 ?% U0 f! ?$ K8 p: i8 N- {" q8 t- G
0 z6 f+ r6 h, g* O' ^
set-plot-y-range 0.0 ymax
& r; ~7 j/ T# K4 ]1 l
end
* S3 d+ x) r* F
& S: P' r, n! ^! g+ F" sto setup-plot2' ?: s" V& F0 G: W( m: `

6 W- ^7 T3 U: cset-current-plot "Trends-of-global-reputation"
( ]& p% m  {7 ]& c  I

! n+ C- y6 I0 o) gset-plot-x-range 0 xmax

9 G. ^1 Q5 Y4 g, W" u& ?+ r) V
; ~. z% {, ~" Wset-plot-y-range 0.0 ymax
( a: v- c% @) Z& H
end8 B; Z: r% t; Z8 c; m# O+ d  `

. N, o- A, g5 S% Y1 ?4 Y# v0 ito setup-plot3
$ s) H, L+ j/ s% f, Y6 ~+ N6 ?; u
set-current-plot "Trends-of-credibility"
, z9 A( U& I9 g) u7 M
6 H0 F: G' [  W; Z* I4 w2 t  X
set-plot-x-range 0 xmax
. {( Z' \) P5 d! b

3 ^- t! V) }- k1 G6 yset-plot-y-range 0.0 ymax
+ Q4 z0 L$ H( I% R
end; \5 l% D9 q7 k; o9 g7 \
) x4 j3 T7 `8 @% r1 X3 N
to do-plots0 V# j! D& f- t  F
set-current-plot "Trends-of-Local-reputation"! ^: j# ^. t4 c7 q
set-current-plot-pen "Honest service"( a9 D  b: P2 e/ M/ y& M+ l6 m
end3 M. n0 b1 ~9 S8 `0 C8 o2 c
  G, P9 M# ?6 [' N2 {
[ 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 v+ D$ b; ~! Z; H$ P. ]' p8 k  _* w5 c8 n% e
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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