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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:  X$ B2 K8 P3 T
to do-business 4 Z/ g5 C4 j' Z1 o3 u
rt random 360& i9 x, d  V. K) ^6 q! @0 \! _
fd 1( G' C/ [( T- o
ifelse(other turtles-here != nobody)[# a" k! `9 w( Y! c8 L* 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.
7 c" T' x4 _& V0 Z1 n. |8 A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 k& |3 O+ Q% e) g- O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  [+ s6 n5 t4 d% L- M0 q   set [trade-record-one-len] of self length [trade-record-one] of self
# ~: x! [: f* h   set trade-record-current( list (timer) (random money-upper-limit))
: u. l9 U3 p4 F: \; z
6 g- O4 X' Y& o' L' h! ^$ f问题的提示如下:
8 u$ G# C" r8 X8 ~' }* Y7 p) u1 E" ~+ _2 M+ F# Y4 R' C
error while turtle 50 running OF in procedure DO-BUSINESS
0 Y2 l# ~; |, g" w+ u& s  called by procedure GO: }- Q7 w* _# C; m$ w4 N% _1 C
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 z* L  r! W2 n$ `
(halted running of go)
! g, e0 [: i6 p7 @. w/ |2 R
" ]9 x+ T! G; a* f8 Q  E( m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~~
7 W% ]5 |, }. v% p/ c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# y) u: {: H5 R. R$ R$ w
globals[
) R% b2 B9 m2 M6 l$ G, Jxmax
/ r+ s3 M) j/ K* Vymax
4 w' o8 k+ @$ Z0 Z, ^5 z; s+ Jglobal-reputation-list7 |) l, G: W/ H  r
9 p, m9 G2 E( N( J
;;
每一个turtle的全局声誉都存在此LIST
- ]! F/ r  K9 h) {  Ncredibility-list
+ ?2 i2 E: q$ j* f: c$ s;;
每一个turtle的评价可信度8 g5 w2 X. M5 }( i$ W
honest-service
2 V9 X" a1 z8 ]  b9 R+ X7 _unhonest-service; H; f1 K3 ^+ v1 \! k1 ?% H% C
oscillation$ N: \8 C) Y) Q& X
rand-dynamic
  {5 G6 b3 ^* N- h8 s5 P], s2 N! U- j$ ]

- w3 ~7 g; u2 U; ?3 L& x# _* ]turtles-own[5 Q. J, J( k  z9 B5 Q
trade-record-all
" B- S5 H; q& c9 ]) S;;a list of lists,
trade-record-one组成
5 {# b7 _9 O- B$ btrade-record-one* `* M- |" y* S" {1 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
, m. w: ]9 t  Z' {& C% J% E- \1 p4 J# Z2 `" Y( ~+ M0 }
;;[
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]]
" z/ ?. O9 U& R" [' a+ A: Ltrade-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]
/ w- O$ h& w7 G3 E+ ]8 E+ Gcredibility-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
0 f# g# x# y. M  Y. qneighbor-total: r8 o) m$ A0 k3 ?9 l5 Z
;;
记录该turtle的邻居节点的数目+ ~4 m# K* _  @$ L; L* q; ^  T$ `% R
trade-time0 I! ^! o4 O/ K& `- C
;;
当前发生交易的turtle的交易时间
9 H- {2 [) F$ ~: U( l' a9 bappraise-give
& u; K5 d) @* }6 ^/ i;;
当前发生交易时给出的评价( h4 I9 W6 W0 j% j  E( ?
appraise-receive
9 b/ \" Z7 e( f  E;;
当前发生交易时收到的评价
' o$ Z! B$ o; vappraise-time5 s7 o" M) h: p4 v3 c
;;
当前发生交易时的评价时间+ N0 L4 r6 ]: E  O' y) P6 H! }
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( S/ g. ]& g3 Y8 j+ K2 @3 ytrade-times-total7 g+ G; J4 R& X0 \; i
;;
与当前turtle的交易总次数* L8 {; q4 c( V' s6 t) D
trade-money-total# F" |; A; k+ y9 F, H
;;
与当前turtle的交易总金额" T/ t+ B  c: T) m2 Z# X: a2 v
local-reputation
9 _$ B+ b2 q& qglobal-reputation/ w  I/ I( ^" k% m# P
credibility
: n: [$ W/ }; N; r* {) o/ f6 a;;
评价可信度,每次交易后都需要更新' P3 s' k# u' V
credibility-all
8 x8 s2 y% Y  Y" v;;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9 F2 X6 J* l0 I' E, J

4 {7 t, `9 F4 ~2 ^! h) b' [% W;;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
# l  P3 g# L3 W' e9 r& Xcredibility-one
3 _+ f# e$ G; M& {0 z! t, ~# g;;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people3 y& v/ K) t. G
global-proportion
) E0 J+ [/ v& u! X/ A( Y: _0 e# d3 gcustomer
* l2 u8 _2 v5 E+ D7 }customer-no% b  p. o& _) _
trust-ok3 g" E2 i: d9 y/ d2 P4 C. U
trade-record-one-len;;trade-record-one的长度/ e9 p4 n9 J0 `! j* F
]
6 d) m; g5 h/ t. N
" c7 p$ |" G8 M; I$ c' Q;;setup procedure6 M; ~" [- L+ S) C: R# ^
: e8 K* a( j0 w5 n
to setup
* E! @! G  H* z: |3 P7 M; x# N6 b) _- D6 ]3 v, z
ca

- H4 R; \) k: Y' Z# Z; i
7 a1 N5 ?# Y! Y3 _! m0 m% N0 c* s/ Ainitialize-settings
& }& n" U# M) v

; k' n1 b/ a1 e0 v3 f$ ucrt people [setup-turtles]

3 r4 c5 Y; u% F6 ?+ s. x. R  x5 Z- n  ^/ {: `5 y% C
reset-timer

, L: ]7 v. o7 k" e
1 W+ }. ]4 o1 U- B* ~poll-class

; c# M& Y5 E# S% {( k4 d% X( I1 A# a) s  D4 W: T* T5 L
setup-plots
0 m6 Q7 Z$ o% M

: f! q, R& V3 y) udo-plots

1 n) U. S' J( U  h+ w7 lend5 o% N- p; m+ t0 O3 n+ [

6 \( O& F  M2 I' {. nto initialize-settings" M0 W/ ]. V' h, {2 Q: `; Z+ u/ N

1 W8 v( S! Z' Hset global-reputation-list []
2 s( M  p, i, W

; j+ [( k# A& d4 N) |  N+ S; E# ~set credibility-list n-values people [0.5]

/ S" B5 ^; {0 ~7 Q  K8 p# D
7 E4 i) D# `2 ^7 Z" x/ kset honest-service 0

0 }; u) Y) z# @4 U7 h9 w) q  ~+ V4 F
5 V5 s) d( |( Xset unhonest-service 0
5 o% Z. k& N: \- l! z4 E
2 m# q0 @4 V0 v# g+ Q' p5 c9 @1 f) C& d
set oscillation 0
# r% j8 d6 d# q3 f# n1 v
3 @$ c# ~+ g8 M7 y
set rand-dynamic 0
6 U7 v5 n. N1 p2 h, }9 g
end+ v5 _! |- M0 n/ I
% i+ [+ ]" r/ _. T( J, g( R% Q
to setup-turtles 2 g6 s# o$ D1 w3 o/ r
set shape "person"
6 e. q; a0 D- Z0 J+ j  Y* `setxy random-xcor random-ycor
3 C, F: X& U, zset trade-record-one []
- F: n5 y3 U; E1 B, J# @

! S/ h+ F3 l: A  @set trade-record-all n-values people [(list (? + 1) 0 0)] , P; R4 A9 z7 A2 `* [4 Z

- p! t4 q! S6 S' O3 w& \' s4 sset trade-record-current []8 c) t( B1 [: C7 w
set credibility-receive []/ }* p9 g8 F; [9 {$ R' @% j; O5 P
set local-reputation 0.5
) ~! Z5 s$ {  _4 ?$ bset neighbor-total 0! g+ ?" u8 |1 l7 w2 V
set trade-times-total 0
: l) _( N' d- q: h' U6 yset trade-money-total 0
. A3 a6 g6 `- ^set customer nobody
, j% s2 E! P3 h6 c# {set credibility-all n-values people [creat-credibility]
4 T& H% ]6 q" ]set credibility n-values people [-1]9 U' x$ U' k7 @! b$ s; Z
get-color) z9 s" }" m' Z

* p& j) z# L: r% Zend* R! m' g3 B$ m. h. g

8 w; J% u; P  I. x- Zto-report creat-credibility
! H6 U- N1 f2 B5 B9 w2 n6 @  |# {report n-values people [0.5]
* E+ a3 Q2 M' T" aend
0 l" _- t! O, E" G1 r% \  H+ f4 Z1 J  X+ I- s8 Y
to setup-plots% Y, }3 p) _+ s/ C% S# x

6 ?; [( V7 j! S% Q! Lset xmax 30
0 q. u, h! Y2 _, l" ]
& n! R* V- k4 h. N4 y6 W
set ymax 1.0
% _" D9 a3 {0 U0 L: M, z' @' ]

, _' S5 ?1 J2 Hclear-all-plots
7 T# f& [0 v. E/ _2 V- {1 r

- U' H! [7 X! ]. ], Osetup-plot1
$ M- G7 R, s! {7 x( B" E

9 Y0 `5 N2 i+ z- D9 G& vsetup-plot2
: r2 N! n+ p4 P. S  |/ v% h  V
/ g+ R" {0 e# y. j5 C
setup-plot3

& c0 g( ]% Q/ tend
3 C4 D/ O- h0 T5 ?" e1 ?: u, l2 w! R, F7 d
;;run time procedures
+ F7 A" e) |7 I. q) F+ m' R8 v% P2 N# _: ^5 d& g, m) t* c" \4 Q7 q7 ~
to go! R8 T8 a& x' m7 G/ q

7 L4 ]# G2 f' s  g. {  }6 Dask turtles [do-business]

( H1 R* m$ R0 U" Rend
& b. V4 `" ]# x0 b6 H/ @3 N
& j6 O7 p5 k% [0 d) _to do-business
5 a- T* Y  j* d
, w- v& X6 P' @* }) @

  \6 {- s( A* @% @rt random 360

4 b) ~% V( V$ s4 D8 F' r8 K9 f9 e6 V. |: P
fd 1
7 d2 v6 m' s) l
. u6 h7 w$ \6 G& I" R4 L0 }
ifelse(other turtles-here != nobody)[
8 z; [+ }- D9 Z4 Q7 s. C6 C  v
/ h, q) B5 ]( \& Q# e. j) w
set customer one-of other turtles-here

8 j* p  F% j, e0 u  N1 ^0 l( Y2 M7 y' d4 ]
;; set [customer] of customer myself
! d  v, R- X. A  e- t' P
! K7 C9 A: o8 G
set [trade-record-one] of self item (([who] of customer) - 1)" X% q& z8 z6 i3 u0 z
[trade-record-all]of self
+ N$ l5 H2 W/ U5 F/ p  o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 \) x/ ]' ^% p8 v

$ x. `0 _+ y8 Q8 m# C3 Z- Cset [trade-record-one] of customer item (([who] of self) - 1)2 R0 n5 l' h0 \, q* u
[trade-record-all]of customer

0 _* _, g# z5 v( e" ^% c7 f: w/ E
! p: K2 T" ~. \1 C/ _set [trade-record-one-len] of self length [trade-record-one] of self

; ]; \( ?1 M/ s, g
$ A  i% g5 W2 U/ Z  F7 Z2 @3 |' Qset trade-record-current( list (timer) (random money-upper-limit))

! V3 d' r; x; w
7 L. _9 b& Q$ g) P& @ask self [do-trust]* l% H& A2 M+ [/ |$ P/ E: e8 n# F
;;
先求ij的信任度
/ O" H; k  ~  _* Q9 b5 u! a2 o; Y
# g9 F( T' b  y- H' P" X7 jif ([trust-ok] of self)1 G+ f  t* p5 P9 L; \( ?6 T
;;
根据ij的信任度来决定是否与j进行交易[
: w' C( @1 E  f, A, mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 }% d5 d5 j1 J$ D/ a( D- G

' Y4 Y# M$ Z9 K+ {$ @7 x/ J[

! P  H6 m( T& z7 m# O' J$ k+ A) i5 |% [/ f3 O( B' c" H7 E  n
do-trade

; J7 _) k3 S4 Q
6 B. K6 P  g( J% i! `update-credibility-ijl

5 @( i: H0 N; E/ U4 m$ }/ Q
: M7 v' G- h' U: m9 e2 E9 }update-credibility-list0 U; p: C* O# a( |: l

5 k) J% Q5 ]- H" X1 f
3 q7 V7 _  g  N+ tupdate-global-reputation-list

3 W# j& ^3 s8 \& r/ _- K
% L) X( }! ^: d4 }0 gpoll-class

( \# G' a& s3 x0 m& P( m  r3 L7 Z' [  o# U5 M6 [6 M" c4 O
get-color
: m8 x( ]/ Z# P+ j+ x# {

5 j; O3 l* |2 `7 w: t]]
9 Y% C( D0 V' R& b* o# Z6 [+ s1 o$ y3 D6 t
;;
如果所得的信任度满足条件,则进行交易" |. j2 ~6 ~3 N: h1 C) V5 e' F
1 G) ^- v3 i8 K
[

2 U* E! Q4 t7 g, D. x# d9 v% p, h0 D
rt random 360
3 h1 `1 @5 T5 r

1 y$ ]8 I7 P, n- {3 u3 I; sfd 1

+ m$ R2 Y4 R" }- Y5 [! Z& V0 i6 f2 |7 a+ c
]

3 [5 k+ @+ j* B; r
" U  u. ]" R$ `/ K- yend

! Q  a, Y4 o/ x, L9 I
7 y$ {/ I/ U( Pto do-trust
! v, ], v2 {4 h1 F. O% Qset trust-ok False0 E0 J/ p" o) R6 w$ I  }( u# ]

. I7 d# P, _3 d+ ?% \

; O  q" f! B- I1 S, J1 }( _, N8 Hlet max-trade-times 04 b% a; w: ]3 y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& J0 O# c6 V! m
let max-trade-money 03 `6 ~! ^4 S4 l+ z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 J* H' u8 l8 H2 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))
) I) c1 c, V+ ~  Q; N0 y2 r0 e4 O& j0 X( ~/ X9 L! ^
2 n4 g+ u" c8 I  ~- X# g
get-global-proportion
) w# @# a  _- a6 I; zlet trust-value
, [9 n& r; ?6 r0 O4 Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' T1 R1 b6 b! s, x3 P' r; j
if(trust-value > trade-trust-value)
+ M, [8 M- a; ~3 K( v: w; G( ?8 ^1 [[set trust-ok true]
" \, {' c" m- c, l  W/ W0 D& jend/ v9 j5 \  w! T' A. c' ]. ~# R
3 w/ [% v: B* v) {
to get-global-proportion/ ^' V; c( f$ H) F: m' E7 o! s- l# D
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 ?: l; }3 j( b. Z1 z+ h* Q0 }+ D* k[set global-proportion 0]; d% Z9 d8 M" g' e
[let i 09 M# v& B; [% W  Z0 {/ ~
let sum-money 0
8 X5 \: I% ?8 t6 J% ewhile[ i < people]6 L3 p# O, P' ?7 X5 ?: x
[. h9 M6 V" ]" ~& H3 y% b1 }
if( length (item i: `, H* m6 Z3 `1 Y, A. Q9 E" x
[trade-record-all] of customer) > 3 )
6 M5 P6 _2 S- i; w- Q
[/ s9 ^2 H8 s1 @( e$ g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) @7 x6 a5 m2 C1 L0 t
]# r9 M9 i8 X7 y. e5 |/ }0 D7 O
]8 ~( V1 S9 f3 I
let j 0
6 C2 H3 i0 w( Y6 a% a, Ilet note 0
/ Z6 q4 N/ p9 I, U) J) mwhile[ j < people]
$ G" J: m# k: @[2 G8 u8 I# p* [' M; M# t; C( L
if( length (item i
( l) `% A# ]0 Z" z" w[trade-record-all] of customer) > 3 )

( L8 |/ Y% w9 v# w& x5 |8 X7 O( I[
( D1 s6 B: |+ Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' S! p7 B7 c7 ?& D; Q! C0 z( g1 w' L[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 E- Q/ I8 u5 `& s; u" V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 o. I. e0 ?+ S  @) I# G9 ~; a]  b, _4 R# r0 \5 E
]
9 z& |1 W  K0 d" q. @( D1 Sset global-proportion note8 ]( t1 h6 `  w. P2 F: P
]6 ~. o# L7 k7 |& a0 [
end( ]5 I9 f4 S  A3 T' {2 D! U. m* s

/ z1 `& M5 R. g" r1 oto do-trade
) S  w: `# J7 A) I;;
这个过程实际上是给双方作出评价的过程
, b+ ~0 E3 ?$ X% F1 b4 X/ s) Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ Q+ n' L7 U2 B. T+ Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: u* R  E# F6 ^. C
set trade-record-current lput(timer) trade-record-current( H& b/ `- x* E- ^$ O
;;
评价时间3 c. V4 E6 b% _. M3 b* S
ask myself [
( p: j8 G! G; x6 \update-local-reputation6 R0 g/ p4 N3 G- W! X+ M' ?. m1 ?5 F
set trade-record-current lput([local-reputation] of myself) trade-record-current  B2 U8 R9 u+ k, @+ J
]% d% u* O9 c2 p$ E
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! W% ?8 l! |6 ^9 o8 o5 h( L; T
;;
将此次交易的记录加入到trade-record-one9 W/ K3 w' p9 V% A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 m9 O) ^- n6 J7 }
let note (item 2 trade-record-current ); _8 m, F" I# C: [
set trade-record-current3 D0 I* D/ }# S4 n
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 d( J* [$ O2 w: G) _* g! I. B% B
set trade-record-current" O" ]7 b1 M( J! C
(replace-item 3 trade-record-current note)
$ U2 X; i2 {! c. i& K
% J4 T9 S" T7 O  k  D. [" {

- B$ J- D3 @- M- Zask customer [
! X. ~8 J4 [' v0 j* [! ^! ]! mupdate-local-reputation
4 L' T8 W1 D! r$ J! ]  n1 p( L" nset trade-record-current
" D' F7 w+ |! s. V/ i(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 }& s) e- ]% V7 t3 k]! {  y( I# F, v9 E6 Y9 q; y7 w
5 n8 R; k& `4 `, v+ Q

7 i5 I: `& O0 z8 s& S; l8 k) F, ?set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ n; N/ S2 W% o- Z0 @  x+ d

# F4 Q9 }9 e7 z& i5 L0 G$ d( Zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 I/ I8 a2 `# C5 {0 d6 X* t% G
;;
将此次交易的记录加入到customertrade-record-all
4 P* D$ }  s& F6 j; \end
, u% q* r( `8 P* I  u& }' R0 Y
( c( b+ g5 f! w' xto update-local-reputation
1 `* b8 O3 S" E. }$ _0 v* G& {% z0 xset [trade-record-one-len] of myself length [trade-record-one] of myself
$ H: E& e+ n# v: q& f, b! Y) N5 ^. N- u" z1 E; ?. V

, F  ^4 {+ e5 n2 T& c3 j, d;;if [trade-record-one-len] of myself > 3

6 P3 g7 j; ]0 ]" o, P9 b- Vupdate-neighbor-total3 A6 s& W" [- r! R1 O9 W: o
;;
更新邻居节点的数目,在此进行
+ c' Q+ |# @2 k; x- M8 k- ylet i 3
" c5 E/ w4 W- d& qlet sum-time 0/ A: F% Q; c# b( t
while[i < [trade-record-one-len] of myself]
0 x. Y6 w! j# M1 B( Z4 c  E[$ D" u5 f/ Y! F! z' O  W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 l! u" T: n4 U& j- d( sset i* T) H. [4 d/ H
( i + 1)
0 D6 _/ e8 Y. i
]
: E9 \, X* G% V' F$ i1 Flet j 3
9 K7 Y8 e6 d! j3 x7 Glet sum-money 0
, Q" ^! P7 p) A  @0 qwhile[j < [trade-record-one-len] of myself]
; H& x) Y7 ]/ s[# o9 l$ p, S% E: g
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)  {1 k; C' W" _/ o& ~5 o& K
set j
. _, a5 x$ g: f! z) }& P, L( j + 1)

& m" y$ p+ c5 J& U! e]  E2 f4 q  s8 g8 Y; [
let k 3
( ]  X8 z( ~: R3 F4 Tlet power 0' m2 e* {: _" E4 R' D
let local 0
0 p( Q% v  W- g  h' A6 Hwhile [k <[trade-record-one-len] of myself]
8 O3 ?2 F' |0 e" N9 d' H  o5 ][
0 B6 O3 B, A5 Y9 p% M  z* s! Iset 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)
* S- y% B: G- Iset k (k + 1)
2 ]( w$ c- X: m/ d0 G3 H/ N4 K. ~]
$ C: h2 D. d7 R5 O& xset [local-reputation] of myself (local), O, H' l- G, U7 g4 B' E
end
  e7 v, y1 ?& E2 }: T- h. a% ~* t. U$ A$ k
to update-neighbor-total/ o; g6 L, V2 Q2 [/ d

, X4 m( j8 a9 vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 [2 h( ]0 j; j+ V7 c. c: q5 g4 I. W. y/ k1 q( ]0 p

$ u( |% m& H, I; iend
, c" }5 d. @6 O* W( l% |/ h0 \; I) J+ I  D; r
to update-credibility-ijl ) m. G1 ?; W6 r, D/ C7 V+ F# ?( l7 I

$ Q8 B+ [3 w  U  h& L# D;;
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。! @! b  V5 A) S3 f3 `9 u  i+ s
let l 0  B2 c0 P, s* @3 b$ y. A0 W
while[ l < people ]
7 {6 R2 ~9 z, N  b, u9 t3 Z;;
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) u- e2 f) r& v- v" |; x% A2 D) i% T
[
1 v- _6 n0 g; l% clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) t  @  Y& Q% m
if (trade-record-one-j-l-len > 3)/ r- a# i; X8 Z$ J  z
[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
# k4 o  o  E8 R" a& Blet i 3
' S# K$ T$ O/ x: olet sum-time 0
0 S$ ]$ N& _/ ]while[i < trade-record-one-len]
, S# D$ U0 T; h( u; v. y: m' T[1 h. A: e" f, S# j0 s
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 j' x3 C$ T! U( _+ Z; eset i
6 ?+ @9 b: f, C/ P. t/ ~, L( i + 1)

' n2 T# p4 v( ~* K]) k( h# n  `1 m* n$ M
let credibility-i-j-l 0& [/ `% ]* B+ @# C0 R1 D+ g5 l
;;i
评价(jjl的评价)
% S- G  O' ?5 }! u9 a5 f! ^let j 35 C! r$ r* p2 O4 [4 z' ~
let k 4
/ |0 E1 X! i6 {) Q" Pwhile[j < trade-record-one-len]
+ O/ [5 r" v/ X3 d' v[
. l( A) w. V% l3 q+ X! dwhile [((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" b1 [- Q! z! b& [/ R3 v
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). M% l3 D' W5 l; q! C- n6 @
set j
$ G% a( C  G8 K: f* `# P4 ?7 N( j + 1)

( ?. I! B+ w7 }2 K]2 h$ L- C# ]5 n! l: W0 b
set [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 ))" [) O3 a8 J2 U6 d5 C

& m8 M* v: n" f/ r  B- \! H: r

+ n$ e1 X, V! ^0 \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% `% f1 r" J6 [$ }  v9 K7 g3 M;;
及时更新il的评价质量的评价
. W6 H/ F& J& V6 T7 m4 C, I: v, xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( ]* [5 _3 y7 D4 }
set l (l + 1)% o: @# C) C/ S2 `" k
]5 M9 x6 F  k4 i/ P. ~; V4 R
end- @  J8 ~4 y# }' _6 E5 s7 H3 b
/ M- y/ B3 d8 z2 e- \
to update-credibility-list
( u, C, r- y; Ylet i 0! C* Y6 G/ V' ]
while[i < people]/ `( D8 P* k* `
[
8 O$ E/ y$ b$ alet j 04 U! Q2 [6 ]% l" _. O. z/ n( ]
let note 0
* L/ a: Q. \% t8 Wlet k 0
) {% ]( y: \9 `6 u% R$ U;;
计作出过评价的邻居节点的数目! @# w( u: i# l; [+ m5 M& D
while[j < people]
5 ]/ ?9 w8 `* ^; ^* B" B" |4 h[
$ R3 r- ]7 ^1 \! o$ V: xif (item j( [credibility] of turtle (i + 1)) != -1)
  a# s8 M4 T  ^;;
判断是否给本turtle的评价质量做出过评价的节点% c- H, C8 R! M; M
[set note (note + item j ([credibility]of turtle (i + 1)))
! c5 t- N3 w- ~;;*(exp (-(people - 2)))/(people - 2))]
& [7 t7 n5 R! O/ D1 i2 T
set k (k + 1)
" E  s2 x$ m# S* G* h1 T0 i% v]
9 R+ a+ R) E; P( R, o& mset j (j + 1): l' F3 D# R5 n7 S' [8 ]7 v
], c1 |% `% v2 T7 G! V' a2 \/ m/ x
set note (note *(exp (- (1 / k)))/ k)4 y, f3 |0 e$ @1 e+ n6 i
set credibility-list (replace-item i credibility-list note)
( O5 g' N6 o, j- f# Iset i (i + 1)
1 g$ U9 y: n0 w( e]- h$ K" m+ H: T9 O, h7 }9 Q
end
$ ]3 ~# g! o4 x0 x* O7 C" S6 L# }7 w' C) M
to update-global-reputation-list
3 i; Y* `3 ?- K5 clet j 07 z% b, g, m* g0 F# x: {  c
while[j < people]- e& h4 ]  o- n" q, Z* g2 S/ b
[
2 m7 s. Q, N6 j+ j# ilet new 04 }/ f3 V( Q9 }! _/ L" T
;;
暂存新的一个全局声誉
8 a, M4 \' Y7 t* G$ d& zlet i 0$ B2 ?$ l4 [9 l3 y- S- n
let sum-money 0
- _0 B2 N) W5 d9 A# ?let credibility-money 0
1 y1 X! {; H! }1 _0 kwhile [i < people]
# l" |5 C5 k* \1 k[
6 m7 ~7 [. O( H5 |' `! \set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  N8 D3 Y! q/ Y# ~; F* O9 nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 X0 l( p8 A3 F  U3 m9 tset i (i + 1)
/ D" S' J: z; n]6 m2 z7 q6 L4 y! x' f
let k 0
8 l$ a8 e* n7 k5 w$ I1 rlet new1 02 g" _( N& @9 t; u5 @4 v7 |0 \# [
while [k < people]
+ X: w7 Z& T, m3 b+ I[
8 q1 b5 C* m: jset 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)* V5 ]; Y) P3 [1 i" @; D% H; z0 p
set k (k + 1)% @1 r5 A" a  w" W: M$ u
]
. i% Y' z4 d+ }6 l- g4 B: Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 a  g( B5 S- G- E" e  Cset global-reputation-list (replace-item j global-reputation-list new)
0 j) `7 a4 F  C: hset j (j + 1)
+ A/ r; Y- f; ~2 d& |]( Z: I$ U, [/ |/ D# y
end+ j3 s! o& T& F! K7 V
9 i# V0 ^  u) s6 E9 i0 t
3 l' r5 e5 X6 J. v
% @$ g5 E( {: O1 w0 W
to get-color
4 a- @# L6 F" f2 j: T0 Z7 m( x  ~, k2 S
$ r/ f' L( |( r9 o  Nset color blue

4 w* T$ |. z/ G5 r( R) hend+ S' f! ?# R* S& {9 l

$ r3 P8 o* @, h: f( k, c( ^( uto poll-class: K  ^, V% Q1 @0 `+ S
end
3 V- v! q% `( h- b+ |9 I- h* x, Z" w5 W& }: ^
to setup-plot1
" J' Y: v6 H' i" a( w# d+ P
& Z( }  U+ Z# g# C; Tset-current-plot "Trends-of-Local-reputation"

/ p3 p2 p# u6 |* T0 F% }3 U% y2 u# ?
set-plot-x-range 0 xmax
! t, o! T8 M* Y% C
, I7 ]0 Z; ], e- A3 J. c/ Z* y
set-plot-y-range 0.0 ymax

8 i( r: `& K% O4 J. h. u. j  U: {end
( g8 x1 ~! n1 ~/ n2 T' H2 i
) Q% x# d4 d* Y8 f! K/ zto setup-plot2) t; N1 M0 ^3 T5 h! n
$ v& s( c3 Z" m
set-current-plot "Trends-of-global-reputation"
1 O' J+ i) J& s6 @* r; X1 ~% h
& p& B' B0 E% D% n% D0 J0 A
set-plot-x-range 0 xmax
0 F4 c* D0 u0 @1 Q! M
6 n. I6 x. k% \; ?
set-plot-y-range 0.0 ymax

9 X- G* h' ]) ?) Z" u5 c0 L! e5 ?1 Vend
# B! D7 s) @+ ^; w7 c' m( p# u: s
4 W6 F8 a7 F1 l, n% `& v. vto setup-plot3; X" H! }+ M9 j2 _

. z6 B+ J1 F7 l! Q. P; m4 hset-current-plot "Trends-of-credibility"

5 \4 j" R( i7 M3 x* b( ]( b  u2 x. l5 t5 v1 X% ~+ j+ M- \
set-plot-x-range 0 xmax
+ I8 o: P* n( G7 K0 d4 L9 Q

6 m5 h! E/ I5 Fset-plot-y-range 0.0 ymax

3 q% d9 O' A+ x; Vend
2 M5 E/ O. p7 E; K/ N" t1 a: S* w3 w3 m$ U  t
to do-plots. V6 z  }+ k8 N; r
set-current-plot "Trends-of-Local-reputation"
* J. E5 z3 r6 ~, N* Tset-current-plot-pen "Honest service"' L, z4 M  y7 y9 }
end4 m: a9 M+ H; X( A* e& G
$ |9 `8 F# W" |/ L4 y$ N  U
[ 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.
( u' O$ c% |; E
9 W* t( ^+ j5 k4 t' Z3 }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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