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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:2 i# F7 _4 b4 n: T
to do-business
4 \1 C1 O2 j5 S" b2 n0 d/ j rt random 3604 i8 r8 @1 ^& q$ F0 M7 I( ]/ r! L
fd 1
. g4 m/ Z& u  ~5 q; S ifelse(other turtles-here != nobody)[& k6 u- a6 J" C2 ?
   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.) e5 N- L/ @6 D
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. Q* z/ i) G0 z: T: ~" ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ s1 p" G0 j+ u
   set [trade-record-one-len] of self length [trade-record-one] of self
5 \% N: ^# L. B' N, s1 G( L4 l) S   set trade-record-current( list (timer) (random money-upper-limit)), w* U1 Y+ c5 [3 d3 `) y7 K

; J* @! p" a+ ~4 O% Q问题的提示如下:
$ B+ @& Y2 r; g6 i. z* c3 J- \' h' r# M, I  g$ H
error while turtle 50 running OF in procedure DO-BUSINESS; \" S4 C9 w! q0 {
  called by procedure GO
5 S0 n. A* x  b- n% nOF expected input to be a turtle agentset or turtle but got NOBODY instead.. n% a# \. ^' ~7 C$ ?' P4 D2 x
(halted running of go)
' b: K5 \9 h, S. q# k- i6 z8 j* @) L! \2 t/ k- v
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~~
/ G, v; h# S$ N7 `8 o( H3 W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2 |' C* g6 E" f: N
globals[
# l! Q# X# ^/ Txmax
, |+ [* d2 N9 ^0 g) J. nymax
+ h# [$ p  d% B8 o( e0 @; [, }& vglobal-reputation-list
" e& S) V, Q, i( Q; Z
8 `3 I8 {* Z1 v$ R;;
每一个turtle的全局声誉都存在此LIST# i, c' R+ k7 @* J! G/ [2 `
credibility-list
9 l% d4 w8 E& Q" S% G, t6 }, n;;
每一个turtle的评价可信度
3 B$ l8 s' e/ `0 qhonest-service
6 [  Q8 x0 K' g6 w# @& L% O, ~- }2 T5 dunhonest-service
5 ?4 [, e, K6 c, U# I' ?3 z9 Coscillation
, O1 P+ q# Y/ \# f" |; Q) Wrand-dynamic9 `; ]& X0 c  H; A
]8 s- B; ?) }1 @* o1 X6 d

& w) R+ D9 Z9 b& iturtles-own[  ?6 N  d4 w& }) _
trade-record-all
, b1 v+ R" `* ^8 V  k; n;;a list of lists,
trade-record-one组成
) o. h  e2 X6 I5 z( }+ {trade-record-one; I# N% u. A/ L' i1 k" ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 O* r! x8 Y; c/ `5 u8 K- v* L6 E8 R6 Q! `% @
;;[
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]]! l  N* e: m: o3 f- X
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]8 N$ h8 s, B, z% Y) {" o+ u
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
# K4 @' K2 a8 L- b( S' Z- i; ?& zneighbor-total( Z2 [8 \6 N6 m9 _* O8 g
;;
记录该turtle的邻居节点的数目2 |" _& s! R- P/ W" r
trade-time
" w" G1 r( C% f9 A3 ?+ ~) u; g* n9 S;;
当前发生交易的turtle的交易时间4 w, j  ]! R6 S$ X, a  ]2 z
appraise-give
! Z+ i; ^5 F. f( l- b; e& f;;
当前发生交易时给出的评价3 Z% J' K* n; A# Q% N$ b1 @
appraise-receive# a7 R, [% ~  d# Q
;;
当前发生交易时收到的评价
8 q) z4 H5 `' P1 L) L; r4 F4 R  Tappraise-time, o+ p/ |3 U) U* C* w  w
;;
当前发生交易时的评价时间" _8 E1 P' b2 x+ Q4 v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ U! A: @2 i" u4 t& i* y
trade-times-total" q; L$ ?2 H) y+ k1 A0 l
;;
与当前turtle的交易总次数& w5 W/ J, c+ ~9 g
trade-money-total2 U* D# g5 S  B8 b$ C
;;
与当前turtle的交易总金额
2 z: v5 ^4 b: c. ?local-reputation5 A0 ?1 X$ \' e/ H  ?# M. S
global-reputation, R, B  t: V# D- X' w( i8 ]. L0 V
credibility
4 }7 c  ]! O7 y3 P! Y3 Z3 u;;
评价可信度,每次交易后都需要更新
5 J/ n5 R. k+ L1 W! R" d% Bcredibility-all! {7 F  B6 S& O
;;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
/ X& V" j+ ~+ w3 f% d) }+ R
- K& K- k/ L$ B* B! R;;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% t& H+ n
credibility-one/ B) Z) u- z0 P. b
;;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
3 B+ J0 o; b& q: r' x1 ?3 Tglobal-proportion% N$ _2 D8 @3 b1 @% ^
customer9 ]/ m: f. i5 t, z/ s
customer-no
, E4 X2 J" p& }trust-ok
1 ]+ a( l$ f: T! V6 [trade-record-one-len;;trade-record-one的长度
" S5 k, d7 x7 p]$ K- x4 U6 o, f$ N
7 X: p5 p4 G/ F1 R5 a8 I3 e; z
;;setup procedure
9 ~1 G5 K2 p7 i# ^4 N- V* n& e; _, r. |7 R1 o% K& Q
to setup+ D, A' K8 z  s$ J6 Z. S6 d
9 A3 U' q1 _3 y/ I3 ]. K
ca
. k0 D& @8 @$ }5 @. G

2 U  R; {, H% O7 ?initialize-settings
" V6 @. u* M$ j# ]

) t2 s: S' S& ncrt people [setup-turtles]

6 {1 u+ t; [% y( ]/ U! S# J
( Q, t! |/ b9 P) e; r; ^) {+ U. f- ]reset-timer
# `0 p: @4 v3 o+ _8 Z$ y
9 T) \) n) c  M+ z
poll-class

& |+ f2 D, D0 N9 ~) h* g: U! T' w, i  B: g. b. w- R
setup-plots

( O8 S& b, s  g3 C' Z! \9 f$ M# a8 R, r; |1 F, V- _* f; i% U, |5 S
do-plots

  @" t5 E1 k# T- o0 rend
* k7 R$ z0 b  O. b, [/ G
; c4 m' A9 }/ g4 Z5 xto initialize-settings
. d7 d/ X& ]- X! `- m% |! k0 H5 s
6 t2 c4 q0 @8 a( rset global-reputation-list []
; e, _, X# e9 C. D: `: Z! ~

( B( x) N9 [% k! j7 c/ t' Hset credibility-list n-values people [0.5]
9 }. r4 F- Z  _+ M& x& j3 D

- ~) v# ?" S( [% vset honest-service 0
7 V2 \- H7 U7 z5 t. h: h
% u7 v$ [9 h; I/ U
set unhonest-service 0
4 Y1 D: L8 g- W' s& {. u

/ J# K. A- ]8 t0 }( j$ Mset oscillation 0
: ?/ h( K( z& D2 O0 |: U4 _
2 g8 z) U0 c& B. D( v! Q+ N
set rand-dynamic 0
* ~. {4 G% L) C* G$ B$ A
end
% a' l5 U2 T6 [8 Q
; ]7 L. _2 t4 Yto setup-turtles 3 R' `$ q# @5 U# ^; _& ]) f- Z
set shape "person"# D/ q1 c  r3 D
setxy random-xcor random-ycor1 v/ P2 @$ h' u+ Y7 f& _
set trade-record-one []
7 L8 \4 U1 x# A( g7 L  F% x
5 B9 ?( m# o# k; X- q0 k
set trade-record-all n-values people [(list (? + 1) 0 0)] # h, ^6 Q3 ~. U+ R. S& T) D5 H4 \$ b
" |- t' g$ N4 t, \3 l' t- W9 h6 r2 C' J
set trade-record-current []& _  y- \# Z7 |
set credibility-receive []" p) |* _" b+ x
set local-reputation 0.5
& ^! `+ x" Y' rset neighbor-total 01 Z; y8 X3 W+ S% B. e
set trade-times-total 07 o1 x( Y: c6 q0 m, J" E
set trade-money-total 0
* p7 _/ C! [& m( \, M2 J8 j6 Z4 O6 kset customer nobody' [0 `7 f% D% c$ E( F) k4 v( M
set credibility-all n-values people [creat-credibility]  e7 b6 n: w# |. H1 l* C
set credibility n-values people [-1]  T, f- L( ]/ k! m+ v4 s2 a! k1 H% Z3 [
get-color, Q# O, l' I2 E8 {5 W

4 f0 T: u) U0 Z) E- u/ \% cend
, ]+ m" X8 u1 w
# f: u  ~: e7 cto-report creat-credibility
" `1 x# `1 n0 t' _/ f  V( |( wreport n-values people [0.5]
, O  n$ _& q( l) _$ w0 jend
9 p: u8 w8 t2 s% t5 B( A) A* L2 _7 j5 [8 ^1 Q
to setup-plots
8 b4 l( o3 w& [6 |- {* i4 A3 {3 J8 G2 A( H
set xmax 30

) y+ x" o# x9 h( {' T) j
& t* n* K( [$ hset ymax 1.0

! [/ `' E, v: E; }
/ u4 e( V, s& ?/ lclear-all-plots
' C% ~" i/ Y7 T) Q  {
; F: i- N; }& X. h1 E! S' M
setup-plot1
3 R+ |5 M9 ]+ Y" V6 d

& h% v; ]. N1 ]- f5 n1 isetup-plot2

0 R6 G  O! X! S) J, v3 C# \
, b* J/ ^: Z3 osetup-plot3

) `2 B4 B8 R7 w$ c8 {& R' Pend
# w) q' @+ |9 z
0 u& q8 `+ S& M. j1 f7 b) ], x;;run time procedures9 m7 |# G' N: I; o" m6 p  i

* r% U: L: V* H! ?1 H1 y( e  Wto go$ Y# H" T$ s1 L0 Y* h; f
, M) \; u' S% L1 v. `+ p
ask turtles [do-business]

- S0 [. x+ L2 X( Eend+ @2 z) V+ K' H, `; r2 \/ G% h

+ `4 m1 p& U, b& y/ D( u/ g' a3 oto do-business
8 e: I# z: Z0 k. \1 \
( a) ]' z3 D/ F$ U( V
, e. v5 ?  X  p  w
rt random 360
5 R3 g& N; ]8 V8 @# B# |" t0 h# W
3 {) Q; M1 f6 l6 Q* X
fd 1
& K- z) j! b' b) i' [
  W' }! G9 h3 E" {
ifelse(other turtles-here != nobody)[
% g  W, p: K8 n# j8 s; |+ H

2 |/ C* g3 ^; B: eset customer one-of other turtles-here
# ^  m$ X% k6 f

- r! h3 J1 W6 ], [% ~. K9 F. O;; set [customer] of customer myself

- e# p" ^4 H8 u! y9 h$ c. `2 G# J9 ?( Y5 U7 ^! H, S8 j
set [trade-record-one] of self item (([who] of customer) - 1)
7 l: ^# A$ ~* R7 s; K- n[trade-record-all]of self. n; y  R; h, Y& l; O6 b
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% S; h7 J6 V6 }+ ]0 Z+ g; m0 ?) P) F0 K9 n1 ]4 F2 Y0 [$ `; L' K
set [trade-record-one] of customer item (([who] of self) - 1)
+ w- _) d7 P1 p1 _0 V2 p5 _# D/ _[trade-record-all]of customer

! |- Z' P& z( Z" P' h1 }# [6 T7 Y% z9 ]0 a# r+ s  B
set [trade-record-one-len] of self length [trade-record-one] of self
# K* d( d0 s0 d3 d+ Z

( y9 }6 A: ?3 h: `1 w4 }+ Uset trade-record-current( list (timer) (random money-upper-limit))

: L4 ]) L) j2 ~5 H$ e( M
( h7 ~& R" Y8 ^ask self [do-trust]( k# H, |/ M3 @1 y( v) x
;;
先求ij的信任度
1 Y& a: ^  R  D) S' h7 r3 y- m: ?7 o
' T. t/ b2 P2 G4 U3 q1 Aif ([trust-ok] of self)
# D: S0 n" N9 \* ]8 ~;;
根据ij的信任度来决定是否与j进行交易[
$ z* _/ X: p7 ^# c, R8 o3 _; t. K) i/ jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( ~7 i2 s, u3 s4 m: N5 m
( ?! L" ]. f, j9 W$ k, i* A8 h# K3 `
[
+ m* O0 a3 w" p

( h4 Q  L: w0 I8 S, ydo-trade
% _3 i) q/ E# D6 ?8 K  z! i' K

8 _5 A9 T% h7 hupdate-credibility-ijl
1 P7 ^" K8 `- z
+ Q' {6 P- m- r( b& _/ G5 F" z
update-credibility-list
: ~% b. w+ w- D/ @

! T6 C. h- P: V& I2 z7 ]! C
! o- }  n$ Z2 Z- Yupdate-global-reputation-list
# ~# i  a* Q  U# ~. O

7 T; g  y5 ^2 t; M6 B0 g+ ppoll-class
5 d5 n$ o: S/ k( C* h. l7 l- N
6 ?- D& X) J( E# }- F
get-color
& ^+ C7 ?  ?5 r& v
% z0 J. [- U. F
]], m4 C* j: N4 b+ Y& \" c! T- A# J

0 A% I1 u7 L9 F;;
如果所得的信任度满足条件,则进行交易
$ \. o, P# i' @+ f9 q' h/ z! y4 c6 a) X5 b; H) w
[

1 N8 u* ~4 N! a9 ]' f$ L# Q3 X+ E/ h7 W& f* G4 b
rt random 360

7 R+ ~( O* R- l+ T# _9 y6 l! s! H. v- R0 }7 {' r$ y: A# x6 e" y
fd 1
1 P4 f+ ?1 |4 h3 ~0 \
1 {) {" E( S8 y$ F1 w$ A. a5 p
]

; U  {2 {5 k9 t( B1 Y2 x; g
. M0 u0 p/ O6 o) |' U7 [0 pend

/ P2 N) q% M8 j) m0 Y) U% B5 Y0 x  |) A# ]+ q" R7 Y
to do-trust
2 Q! o- g" ~: g' P1 P! W( Oset trust-ok False: k. u6 P6 Z* ]( r+ A

, l8 Q& z  J" U4 {

2 Q7 g1 X; _1 C5 b: qlet max-trade-times 0  P9 l- g9 t+ w
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 t, y0 h7 n! x
let max-trade-money 0% N/ a1 j+ q" Y  p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* L3 Y* R8 n; ?% d" e- ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. d6 [% J& d* d) ?+ z) \9 k0 ^6 W
8 Q( U7 G3 B- w4 L; p' A# X
get-global-proportion
9 G# e6 m6 D; i% k/ zlet trust-value
2 o3 d/ T$ [( w0 y/ `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)
6 b5 k4 H, H; Q( F& F# P9 v
if(trust-value > trade-trust-value)$ J* f& }7 T$ D8 x9 V' x
[set trust-ok true]
$ D3 S; _5 B! ~. }& Q* Z. X  Hend
- ]3 t. ~# s1 [6 e+ T' N
0 f/ h$ P1 I' G- ]to get-global-proportion
4 w; H0 J& u# k3 C% y: v) Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, Q* s! Y' l! P" _[set global-proportion 0]
9 Y1 ]7 V# U$ A0 |$ f1 T. D% _- @[let i 0
) l3 f7 U3 u( r$ T2 ^5 W4 mlet sum-money 0( J  W6 G9 r9 h. j" l2 e! X6 C
while[ i < people]
2 @# S, Y" ~2 {! e+ h" g[  N3 l( v8 Y# V& g
if( length (item i
- X$ Y& ^; s$ e) j[trade-record-all] of customer) > 3 )
7 |& U( @' ?& `4 D. N2 H3 E
[
8 p: ~0 F3 ]. o* ]1 b9 A1 u/ `4 Hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: N! \, J$ R2 ?8 d, Y3 B]
: E4 ]" h; p: q: X$ E]
/ j6 Z" T' I& T" Ilet j 0
9 h* d* I4 B+ _2 O% _let note 0
- _5 t6 @; H" c! Owhile[ j < people]
. M' |3 V( b' Y! P& z[
5 u( D9 S/ E5 a$ b1 Gif( length (item i) {9 R% D3 M7 U" t7 F. e
[trade-record-all] of customer) > 3 )
) M8 T6 \) ]: q- g  a& V3 o; V
[9 y0 r) u1 _3 |( n# \9 E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- c. |& P, A+ c- D2 Y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' U2 w) O5 ~& a) m[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! T  r  s! K" `- @, x! E
]$ d9 t  [4 [' l) V2 W/ `  F% R
]! j# \0 {' J4 I/ D7 W
set global-proportion note
" R5 x" w# G8 e, x]
% P# W  F- a# d# pend7 i! s* \: b( _/ {1 j8 x4 x2 J
/ H% W: s/ H6 z, q& F3 p1 m
to do-trade8 F) T' Q7 E+ d2 d; z# B. f' A
;;
这个过程实际上是给双方作出评价的过程4 t5 B5 q/ Q0 X2 F+ E; P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 m7 H# G( O6 J, N# Y9 [4 N0 Q3 O& bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" l, k9 `$ |8 K0 d
set trade-record-current lput(timer) trade-record-current
$ x; x9 b- ^: ]4 a;;
评价时间" }# y$ J- O, a& `; e
ask myself [
% p3 J+ s- }  w9 ]4 `8 }' jupdate-local-reputation+ L$ D  y5 @, H! e6 d: h' M7 w
set trade-record-current lput([local-reputation] of myself) trade-record-current
6 x2 O* b# @8 }5 X% z4 L6 W]
- @. o# K; l* dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 C+ a1 K2 ^  [9 t
;;
将此次交易的记录加入到trade-record-one
+ r5 i8 v/ B7 ^* @4 k7 Uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 d. N: A7 @8 J3 V+ G9 x4 Y; o
let note (item 2 trade-record-current )
2 {; s. {. i1 `) tset trade-record-current
" z5 }! I2 Q, O3 F- Q% C(replace-item 2 trade-record-current (item 3 trade-record-current))

; y% o7 M/ h8 k  f* h, {set trade-record-current
( O$ p7 S: ~( c( B; _' [* K  |(replace-item 3 trade-record-current note)7 P( o$ h# F* b$ S% H

2 s4 \. m$ F0 e9 j3 o1 Y' \
& P5 ~8 m2 E7 C. h5 i" B
ask customer [# E. }1 z' y. T7 j
update-local-reputation2 o$ @$ ]" {$ ?
set trade-record-current% X) W9 O6 a' `# N4 w/ t! N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% _) k; O9 B, B2 M- }& C6 v, j]
' E8 e  ^3 e, ]8 z- k) `. H* [0 x
# i% `, S( d- O
" y5 O# m5 o4 O5 ~) Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 Z* j4 m; N1 v! D4 X
/ d# J8 r" m, |7 S' C: W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# g- P2 p8 u# j4 M( z4 r;;
将此次交易的记录加入到customertrade-record-all
, I5 [9 H0 X. g) ^" Nend
0 ]! q8 w2 k7 T8 n7 n7 j: L2 i+ R9 c8 B3 q
to update-local-reputation% q/ [, E! f' H: V
set [trade-record-one-len] of myself length [trade-record-one] of myself
' X, U. a5 a  ^' y
# i9 ~7 \. L! q# T2 |+ X5 z9 s8 @
;;if [trade-record-one-len] of myself > 3
5 D# }& \5 ?5 t& b' j/ F
update-neighbor-total
# r& K: o5 f/ T! c% K" Z;;
更新邻居节点的数目,在此进行5 l% x9 [: k# C4 y3 u' F  s
let i 3" `9 S+ I# ~! x( z7 J
let sum-time 07 x0 L. n+ C) j1 }
while[i < [trade-record-one-len] of myself]% E; s2 P: M9 ]
[
& X5 u* e4 f+ f' ^, x! _: U6 `$ xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& Q/ P0 o3 @6 V2 o. o# ~0 S$ zset i
5 {# {/ c8 z) D: F; g+ [1 j( i + 1)

, z+ v7 V, l. U# h1 t7 c% H]* x4 }: S# l% G; T4 L* j
let j 3/ h5 G; g% y7 ?' T" M
let sum-money 0
& L2 I7 Z+ g& C" rwhile[j < [trade-record-one-len] of myself]
6 R6 k8 W- h$ K! l4 T2 P[
8 R  p& z2 A0 x7 _. P; w, f5 Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 L9 Q+ S) |6 @5 _+ d- p& Vset j0 H+ S/ g& g7 X3 [9 q
( j + 1)
3 z+ f  u- O& o8 g3 V# _
]
6 Q- D1 S, N/ v' G2 |let k 3+ y( s9 {- ]7 I6 }" k
let power 0
6 v! V2 V0 R# m) F. K9 j: a* X0 zlet local 0
, X$ [/ \! Z1 M2 z2 wwhile [k <[trade-record-one-len] of myself]. G; @- r  B; J  G' h/ i
[
8 A4 Z* {# Z! Eset 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) % @+ c% H8 O1 y/ e9 ?. m
set k (k + 1)5 J/ G$ ^) ~0 m/ L" W+ @$ B5 Q& @
]7 \- M9 T* a4 p# N! r
set [local-reputation] of myself (local)
6 d; T0 z7 r% q6 x+ w% r7 E( e9 L7 Kend+ u+ b8 _  M# d; L
+ R6 }/ B) l3 f" l2 }( F! L7 ?. l
to update-neighbor-total
# \1 B9 H1 Z  P
& D- e' Q" {# P1 Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 N5 W. O# X% Z4 J+ W: d- k
+ G0 a/ P: X+ S0 v5 ?
0 ?! P, E* t3 z% F* H5 z3 Z
end
& ~3 x  {! f2 ^, m9 A( A- c
5 }& Y' E1 y# E1 V4 A9 f/ \! Eto update-credibility-ijl
3 L! N1 A& C" A, O
3 D; Q! x; n' j3 O, V- };;
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。" c( q! N8 D' b! |  F5 s
let l 0
- ?! F# B2 c! o3 M( cwhile[ l < people ]/ t  ?' x5 a1 J, G; v; \
;;
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1 E% q8 @0 L* ^9 g0 ]- ]5 U$ m0 j
[
% b9 m+ X' E- d# A3 Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer), c- n! L; [6 ^% E( x1 j& B+ m" K
if (trade-record-one-j-l-len > 3)! J1 E5 I7 i& G' v
[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
# `6 T( @9 ~% e! v7 \let i 3% N- o; X! a3 v8 C
let sum-time 0; O# X0 K  H5 ~- e/ g* h
while[i < trade-record-one-len]
3 b9 Z$ V9 T8 o1 B+ n, r[
' z- K  ^4 v/ n/ Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 [8 c* j, X/ P6 k! fset i
# J& i8 G' r+ f! X) D2 Q( i + 1)
8 p  L' M" M( l6 E- Z. W
]( z* Q5 q2 X, Q+ Z/ e
let credibility-i-j-l 0
. P2 P8 d; \( C2 m+ ~5 R/ W+ q2 J;;i
评价(jjl的评价)
9 \, r' c; W' B2 @( Glet j 3
7 R! y( G% Z3 E4 c, i3 O: mlet k 49 ?  l3 G0 {, s+ W% \
while[j < trade-record-one-len]  j& O2 Z# C! k! |/ N+ e4 y4 y
[
! `* j; W2 U, @2 X0 Y! nwhile [((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7 X2 _+ M* w8 i9 {1 f% s0 Y+ ]
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)
/ C% v% C( k5 O' H7 d  |set j& P$ r- i( |- w1 v
( j + 1)
1 b& u( J1 H$ i( u5 A5 }' K2 ]
]4 a% C# P& x+ V
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 ))" E( O$ F# E1 n9 A
/ ?+ A7 q, j; |0 @8 h  n+ J

! U7 h" ^# y# p  n" L7 w& L8 Plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# j4 x0 D8 w" T;;
及时更新il的评价质量的评价: \0 |9 ?. w+ E# X: ^
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  |1 V# R& o0 H8 `# x/ n- I
set l (l + 1)
0 p2 |4 e* q  S1 M( n7 s]
, m7 G5 d5 b5 gend
& X: u: M2 j7 u, T8 I$ Y* k' R) f: \& O, w; m# t( I  {, v
to update-credibility-list
% {' X/ {; [* }; x; Y: r2 alet i 02 w4 `$ e/ `8 h4 |% w
while[i < people]- c' f: `$ |, q
[4 n; X8 B& n0 e! ]  J6 L% o' I
let j 02 z  e2 f% Z* T+ ?
let note 0
! C0 s* o) E4 y; g$ Alet k 0/ t+ m+ Z5 l5 {8 J* D9 c% r: \: n4 g
;;
计作出过评价的邻居节点的数目4 J4 n( ~5 S' I0 \) Z6 o* `) \$ V. p
while[j < people]8 `/ J4 X9 t- o1 M0 I: M
[
8 z0 Z/ r+ \6 b" K- a, Nif (item j( [credibility] of turtle (i + 1)) != -1)7 Y  V# H% ]  g) Q( X
;;
判断是否给本turtle的评价质量做出过评价的节点& U5 M! O% m% C
[set note (note + item j ([credibility]of turtle (i + 1))). R) Y5 s" }% |3 k5 Z3 @3 U2 Q
;;*(exp (-(people - 2)))/(people - 2))]

2 c' l$ P& ~: L* rset k (k + 1)+ F* q7 J, A& s" Z3 f2 K
]- h% u4 J3 G- W( b1 Y8 O
set j (j + 1)
, s& t4 s* ^/ O1 []
+ B6 ^4 G; D- a9 M: W7 o" y7 mset note (note *(exp (- (1 / k)))/ k)
' F( R+ q7 M! ~9 p+ @: {set credibility-list (replace-item i credibility-list note)" o, b/ [( Q0 q6 S+ L% h3 ?
set i (i + 1)4 H+ i$ p5 I  a# T$ H
]( n; I9 v; m5 d/ p7 S
end
% q8 @7 E* d+ \# h, `5 _
- ~5 D* T5 i% F+ _% c1 J5 g' Sto update-global-reputation-list5 C0 ^9 g9 j+ X" y0 Q
let j 02 A! {, m* {, v: \& k
while[j < people]
" s1 A/ \2 d" g  e5 h8 }[& q/ Q( M% \* ?2 _& i% q
let new 0! H  O0 `' ~6 D6 ~- Q* s* p4 D
;;
暂存新的一个全局声誉$ r6 L' _: g0 M
let i 0
' F& V1 i7 ?# L4 Alet sum-money 07 t; u5 Y- p- _$ P. p
let credibility-money 0
; g' r' G/ b! ]0 o, wwhile [i < people]
! M$ R! `& u# V+ Z( @: e[' r: E+ {8 V9 ]& f
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% k' w% f  s2 C0 t0 m% Y3 y9 T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% i9 y# X( u% w) x5 n
set i (i + 1). ^+ P3 [4 o7 d! i% F  M) x, ^
]5 s2 j0 j" @  z7 e7 s1 {
let k 0) }4 \8 U1 s$ z$ M3 B
let new1 0" U" V9 B2 A+ E& c& ^
while [k < people]6 X% y, C1 c, w( M! o  M
[# M2 {5 t+ W) y, q4 v) P
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)$ b& N/ o8 ]$ B7 F% ?; D
set k (k + 1)
7 N! L% z4 r  \# n1 q8 P. B8 }]
# }! w  c( m, k" aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 M4 v% F' L. y" J! G
set global-reputation-list (replace-item j global-reputation-list new)) p0 a2 Z" c' V* n) {2 }' i+ f7 @& i6 l0 H
set j (j + 1)2 a8 \7 n! }/ o/ B! _
]6 y/ a; K3 m  }5 w6 b
end
& A1 m* f% ]+ Z) D" X  s) {: R1 s" b; |
. l$ Q0 y: M5 l! y. G! W' R# z8 s
8 q: _9 Z- B$ A9 e( U/ x) `
to get-color
7 x- Q/ i" E' i$ l6 {2 L1 ^
, a9 t3 ?! \' {3 Oset color blue

3 N6 r3 c, ]( g7 ^; tend
- j2 g! K6 k  Q- G7 s6 M5 ?3 Q- L; |6 q+ ?/ V* ^9 e8 \, M- o2 @  ?
to poll-class. ]* a0 z" N- a0 w9 r( k$ Z  Q
end
0 F* V0 T3 C: K! c, v9 |: }3 x6 p
" P- H) z2 s6 n* @" `: |to setup-plot1
5 B' F4 C0 L2 o; }" Z
# r+ k8 w1 c( Z, ~  h- uset-current-plot "Trends-of-Local-reputation"

) [% M$ I: N$ V+ k4 V. d9 ]& e" D2 K) }/ y+ x) n  \) P
set-plot-x-range 0 xmax
  e& G1 X% l$ u+ X& T+ c

) F7 E/ n7 k7 u, Iset-plot-y-range 0.0 ymax
+ h" q0 f) M0 {. N5 E/ y% ]
end
% F6 j) E. O( W
* f0 R- a" X- V2 |/ |7 O& R8 }# Ito setup-plot2
0 f+ P6 I6 j3 c& o* r
! j. w9 Z% ?3 @) c- |set-current-plot "Trends-of-global-reputation"
* {3 r( F, F8 K
" ?; e6 V+ A( f6 y$ f
set-plot-x-range 0 xmax

. Q5 g; z7 U7 k/ Q
2 P. C. l/ ?9 c. S. P  U% J' \3 Cset-plot-y-range 0.0 ymax
. }4 ?, D) j" ^! h) r0 E
end: f7 @6 C4 G9 a

, O0 z" b. c( G. @to setup-plot3
7 C8 V0 b, w9 J- Q) T! I  J2 C+ }' V% o( I+ p* B- ~5 X: `4 o! d) s
set-current-plot "Trends-of-credibility"

  R; T- x! Q# F7 h  ?0 v
& i3 E$ o9 I6 ]$ n$ E' Aset-plot-x-range 0 xmax
. a; e! R: @' ]# L( {7 u7 q
4 S8 U( `- \' h6 @' L) _9 ]
set-plot-y-range 0.0 ymax
: C$ {) ]) |: q7 q3 `9 q/ p$ |: y- q
end$ u0 _# l7 f8 X* [1 ]4 v( z! W

. P! Q& T8 u8 w' A" {to do-plots
& u& r7 G9 |, ?7 D9 [set-current-plot "Trends-of-Local-reputation"6 F& {& g% O  u0 o# N; ?* _
set-current-plot-pen "Honest service"
: s; |+ {) s' o2 w! D& T. mend
7 g7 i+ X9 M, h* n7 u6 s  y8 q/ h. O; E9 O: M3 P
[ 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 d' K8 k2 D# u- `0 [) R. B0 o) E
4 }/ Q: x* Q7 ?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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