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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:
) i2 J4 S2 m# X8 F6 v9 |to do-business $ O2 r8 S6 ~$ r0 N! q- u
rt random 360: U. ^/ O/ r  k& g% v3 Z. ~
fd 1
# K0 c* c$ M3 ]( u, T6 W5 a+ L. I ifelse(other turtles-here != nobody)[: _; K3 `/ l/ H
   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./ Y" ?% w5 ?& y3 `. V6 C% k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 e/ ?1 q- h( R  x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 f5 d. L' r2 Q* Q0 H: f& Q, W
   set [trade-record-one-len] of self length [trade-record-one] of self
5 k6 p2 k, B7 ^: i9 k" Z% o- t& f   set trade-record-current( list (timer) (random money-upper-limit))
* w! l/ N' |9 z- b; p, I# v8 h. {
. \4 L2 z5 E& z5 T$ |问题的提示如下:
; _  O! Z5 s- _& E+ m0 ~5 H! n* t4 K' M( V! P/ A$ |. A. ~* ^
error while turtle 50 running OF in procedure DO-BUSINESS
6 A3 D- H' q0 t0 O  t* [3 [  called by procedure GO. K# A# _$ H% Y6 p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 }* W! L" B+ M3 h5 n
(halted running of go)
# a9 U5 W" q; \3 R0 C1 S& p. f5 M6 [
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~~3 x% f! t& [4 S3 U- ]
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' d8 b3 [0 ?" F! l5 s* F8 W  ^
globals[
! H; ?7 [0 t! H. A, sxmax4 N! @. G  Z' G) m" z/ t8 f
ymax+ u3 Z* J; F9 Q( b5 a; e
global-reputation-list
( o; M( U8 f3 M+ ?: W% w' Y3 M# z7 L9 |0 T" W, ?
;;
每一个turtle的全局声誉都存在此LIST' C* l* i) y) H
credibility-list
+ w5 j0 O; I0 ~6 k;;
每一个turtle的评价可信度
; n: \  [$ B, J- r, P0 w9 W1 dhonest-service
5 q' z: x9 h( O2 |6 [7 k* ]unhonest-service
/ P$ W; V$ b3 T6 _4 ioscillation
" t4 Q% B  ~' `% P/ brand-dynamic
* ]6 K: {  E  h: Z* g1 f]
4 P) N7 ]  k8 `3 Z2 v3 q6 W# j) _1 ^+ [* @2 A$ r$ O+ ^
turtles-own[' Y( _0 s$ w& x* T6 S  K
trade-record-all. ?9 W3 y3 _' A4 g" C
;;a list of lists,
trade-record-one组成9 Z7 r6 y  J) I) V2 K0 H7 J" A- o
trade-record-one. X) h6 v) @8 L; d7 H' s8 B
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 Y2 O4 t1 u6 m: I3 Z4 u2 z1 [, e' z& [8 i7 p5 c
;;[
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]]) V/ C" u  V" x3 w* P9 t; [! m  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]
% M* D& ^- P, i5 @# Fcredibility-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
7 v7 ^0 \1 \! R. ]; B! D5 V' F( Aneighbor-total
4 J; t4 y, L, |. b/ ];;
记录该turtle的邻居节点的数目
8 q0 U  N+ Z( A: |; s. [, u9 G7 ltrade-time1 B" ]" d% [. k* w. q1 E: M
;;
当前发生交易的turtle的交易时间  ^9 p' m+ L. b( a* [
appraise-give
: B! |3 W. d6 K8 o;;
当前发生交易时给出的评价% y5 K8 G5 y# e  S4 U3 K4 h8 d6 j
appraise-receive% `7 a6 b' |7 y5 J" o' @0 R" g3 A
;;
当前发生交易时收到的评价% p) b- L. }; p3 U+ c8 e, ?3 {3 d9 s
appraise-time
& a2 |3 o  P) @$ m2 F- V;;
当前发生交易时的评价时间
6 ~$ g, }( Y+ [  S+ vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 j# L3 v# M3 Z6 [) ^trade-times-total
( _! z$ n. p, Q;;
与当前turtle的交易总次数8 y6 t9 C$ y0 e" T! T* q6 D( n2 f
trade-money-total; ^" B, r* ]8 \) Z
;;
与当前turtle的交易总金额
- g! |9 E% S; |" m+ x+ y  clocal-reputation
4 H$ ~( c& f4 c" i! j4 R/ Xglobal-reputation( k6 Z+ L4 `$ ^+ ?5 l
credibility
% c; L* S1 {9 ]( L$ U4 Q4 V; e;;
评价可信度,每次交易后都需要更新
; ~# |7 E) A, o9 _credibility-all( Q, F0 a& x, 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$ }2 h) F  p( M, X

8 ?: ~1 r+ h$ u1 K- O% H' o& o5 B;;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0.53 _2 Q- y& w0 c+ w# u, U: D
credibility-one! Y9 a* b  D: ~: t  X( P7 E
;;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
6 i  F. F  T) k7 w- U3 Iglobal-proportion
8 I3 o7 M1 U9 }customer
6 I1 Y  R4 m  F5 z/ _- K% a8 Z0 Acustomer-no
" Z) @% H% [- Ctrust-ok  \/ U8 {4 u3 x
trade-record-one-len;;trade-record-one的长度
' z4 V7 F! B& L; a' R" |]8 t# d; r2 L. Z3 Q6 X: A8 a

0 g2 ]) n- \; V; l4 |; s;;setup procedure" ~5 u, J& _5 h+ H0 t) F
  n- z8 ]& k$ b2 m$ F
to setup
4 ~' ?* f) [! Y( V, B: |+ }( [  @; e  |) P
ca
9 N4 G5 J1 g8 s8 [- B3 o
. a) g3 a( R8 B7 B
initialize-settings

6 [4 {& o9 q& g4 ~$ x. Z8 _: [) j5 s/ t7 |! W
crt people [setup-turtles]
: j$ z& N5 X7 c6 g5 b3 X4 m

) K) A1 Q4 c+ ]- S! s- m! D# q3 t4 Breset-timer
! ]6 F& h) v0 M( F2 h0 ]& r. X
2 F1 h3 {% ^( m$ P
poll-class
9 b+ z6 Y# ~) @" W9 N

) a& p* Y: ~7 T. J8 w) G- Ssetup-plots

' }7 U8 W. o' t5 L
7 F9 N6 U* Q: `9 ldo-plots
" _( O. o% p- d& d7 @- N# i6 \
end
' o$ g9 R8 I0 b$ x6 t* `$ z
4 f$ A' `$ v- Dto initialize-settings
4 L3 T8 h8 ?( U
9 H" \0 N" w8 d+ h: \set global-reputation-list []
$ ]. M. ]/ Y7 ~4 ]9 \/ ^

9 v$ `9 b* t9 O/ Lset credibility-list n-values people [0.5]
1 Z, n$ u2 }% R( B. K% U

: h7 o" d8 [2 l; H( u( fset honest-service 0

, M. W" F7 Z1 T; J" J) g6 l  K- F. k+ J8 y
set unhonest-service 0
7 j+ j- U% b2 p# _8 `. {1 G( J
# L7 _6 g0 l4 a% _' M5 E; p
set oscillation 0

1 T/ `8 [* g" I1 f* I$ J  F* a, N3 q% W/ \- x: x+ y2 \! j+ N
set rand-dynamic 0
. u) t9 M+ I* U& N5 N0 r
end# W& N( e' Y2 q8 z% w- m+ n6 K

2 \% b. [3 i" K9 L" E3 L. Ito setup-turtles & C* i$ k7 v" O4 L: [5 g
set shape "person"1 K( H4 `$ l# ~$ B: r) P
setxy random-xcor random-ycor( X) Y2 B9 l% O$ @$ |
set trade-record-one []- u& o- P5 U7 R% _& P
" y" t3 D! a2 {2 e, l# R5 x) k
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 r+ t( A% ?8 h* v0 W4 a
- W( B6 z: K& |! `9 H1 x) y
set trade-record-current []
( ]. C& `9 E! v, Lset credibility-receive []
5 f2 o1 j2 c" Wset local-reputation 0.5/ e  m7 x  S/ C# P6 Z# H
set neighbor-total 0
, G, _7 P- K- y  C3 M& _set trade-times-total 0% v6 ^9 t2 }4 i0 @
set trade-money-total 0! z3 m3 `6 e' a* t3 E: r
set customer nobody
) x! ~% T) y9 a. P" I: Z( rset credibility-all n-values people [creat-credibility]: ?9 H) V: k0 N% g3 i
set credibility n-values people [-1]
5 S, }/ R" u" b4 k0 Xget-color! b3 d/ H' \1 d* ^
3 \% ?, ?3 h+ x3 l3 w% d+ f' ^
end
; n2 P5 v! ]1 r) G! A# R; E7 _% ?: v+ d, B  z3 J; |, Y, K
to-report creat-credibility* h1 P" C( i( [* L, @
report n-values people [0.5]" W( f, I: S3 y" z
end
9 q8 y2 _4 V3 e4 s( h. ^+ u# C" A) h3 d& J; J; ?
to setup-plots9 m3 ]) F9 ^6 A7 g& V6 S) i  C3 n, n0 o
& D7 ?" i* C. ?+ c) |8 e
set xmax 30
- P0 y3 ~8 A* B" O# y
+ {, R) v, t9 u" {8 d: _
set ymax 1.0

+ d! P; n0 D* L3 V* W1 \6 C
( h" ]" D3 v8 m7 E% s2 iclear-all-plots
/ U' c* ~* J/ U  R* V, i# i, C

, p- }: X, y& ~2 q0 g, T0 Xsetup-plot1
" \$ L8 |  h. }1 q, h- i7 x
( g3 Q8 s- d. ^9 H" X1 H7 Z: O9 B
setup-plot2

) c0 z; G+ ~% h. z. m1 Z! x2 y: o9 h& x$ S5 U* E
setup-plot3

' k2 _: p& C/ M' g9 p" Q" [end
, E, \7 s, x: \$ ~5 B1 E. }
" x2 r' U4 v; r- @. S;;run time procedures
! n6 R/ l% `4 H, ^0 u) G
/ C8 W& C  G- @to go$ M* c) A) L2 Z9 v" D

$ N! T1 {) L# m3 xask turtles [do-business]

) I) ^1 U: w) w" h' gend
5 c* x  R. F+ A5 j# u( c1 P1 r0 ]; W% i3 N' _9 ]
to do-business 7 V% Y9 Q! Z7 h/ g

" x$ p8 s8 \% n' }" y9 |8 E# G- ^/ E- ]( k3 X( `% z4 f* X; P
rt random 360
# j& _2 V- m5 Y
3 s# N/ y: z% y0 w; H  L
fd 1

, ^- ?$ ]0 k$ r+ V) E, \/ j: |0 s" \" r" Q6 J! e/ U9 p# |
ifelse(other turtles-here != nobody)[

/ Q* j: L" S) _" K7 _3 w/ {6 O
$ M% \2 y4 T  e4 pset customer one-of other turtles-here
9 I1 c$ i( L0 J3 g: H: w
6 z! K2 T' b2 g1 a) i; \! P
;; set [customer] of customer myself
" J* @. L# ?" k) p! n8 c9 ]

, `4 [; @# R5 S& Lset [trade-record-one] of self item (([who] of customer) - 1)
" h( i: A& P2 q) Z[trade-record-all]of self
2 A4 L! d9 e8 }9 M& E; E, z) e;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* `# u+ V1 `3 [) D8 a3 H& {
: w$ {) |* r$ |7 }5 v) L  c
set [trade-record-one] of customer item (([who] of self) - 1)
9 D+ U$ ^. z! k7 t  ^[trade-record-all]of customer

' l& f: t4 ?$ h" I6 [8 e/ f
: s+ n4 L0 F, |  M& q- kset [trade-record-one-len] of self length [trade-record-one] of self

% q" w; E+ }/ ~1 N# H9 H. s6 X) E0 b7 B, x% I- o1 p
set trade-record-current( list (timer) (random money-upper-limit))

# W% o% I; k7 R  d6 `( i6 B1 H1 y" s% A% V) D% v
ask self [do-trust]
2 c+ h, L4 G0 S- i0 ~;;
先求ij的信任度
9 _& l# ?0 z: }; M7 @
5 U( B5 l4 M5 k0 `if ([trust-ok] of self)
: M5 y# {" s- Y  {6 C$ b' S: J# D;;
根据ij的信任度来决定是否与j进行交易[0 C% S8 M& ^0 |0 J8 i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 [- x- i4 w: j" G; o
# m! [. t; @' h1 P[

+ ?) v" U6 k: r4 c2 z$ }
# B( A3 n6 Z$ u8 U8 b2 p1 Udo-trade

# `4 ?3 g4 X( K# d) g2 h# Z
+ \- W$ }# g' w; u2 ^update-credibility-ijl

9 T% Z7 A. w: x! J; a# c  k4 [& _. ~
update-credibility-list
1 T) D7 D) Z" z- w( v; _
6 C/ n4 n! `9 U  E6 K; D" @: @) C+ n
, ]* n5 r* l" S& L" x+ e
update-global-reputation-list

, w* c& f9 @* k9 H4 w1 y- m  D1 H
5 ]6 L7 q" T( r; y( kpoll-class

+ A1 H3 m5 T" b8 n" C* A
1 a0 g1 h: D6 c# Q, Z' ^3 Bget-color

, E- b9 W. ]1 }' D' W( t# v
7 G3 W  n2 w5 v3 M2 N/ R]]
; |$ z6 L% V  y" A% N
$ K) G+ [5 F( Q1 V$ l;;
如果所得的信任度满足条件,则进行交易
, V9 ?& g- W) }  {  T% G! |  |1 h6 B$ d  o% `5 J0 N5 i; S
[
+ l  a4 u! W  ?7 K4 I; J' _

: o  S) C. I: d" F0 x: Z! K: J# W* wrt random 360
* u& s8 m5 ^5 E7 D6 @  C( [
% i) s) F; q& I, O2 ]; {
fd 1

; Q7 v4 M# o" V3 [0 x' k* P. M5 i9 i2 E& E% j' R
]
) h. L5 s9 P1 @7 f0 A2 l

# I& C3 F" a/ w" P. yend

3 K3 M5 X1 l+ ?( ]3 `# L5 n
9 G: O3 C! V! |8 c* E6 R8 n- \to do-trust
4 s! u  d* i) v! O5 @  h; n9 fset trust-ok False' Y! ~" ], Y3 H6 }! ?5 }
& c% H, H+ k( G6 \( g1 C

! K9 D4 O8 |$ B1 }  P; b, @let max-trade-times 0( E8 w+ `' o; }0 N; E+ F& v' q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 e1 }8 d0 s1 I. y& z1 glet max-trade-money 0( G/ O) O/ R. @, }% E! u0 E# Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- ]" D9 c# P2 K. p9 ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# Q$ H* c) L6 T0 h4 x6 A+ P$ S% M

+ {5 U6 ~1 n- `& hget-global-proportion6 F& d2 f) d  H7 _# A& T" v1 t$ \6 m
let trust-value
5 F3 Z  M6 f1 r8 tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- Q) n1 y+ H2 wif(trust-value > trade-trust-value)
5 E% S6 o( E7 H0 c: W[set trust-ok true]
; F% l- ^2 h. `4 A9 Aend% J( ]6 p7 v& }7 I2 f- R

0 E/ n7 L6 \: e6 ^4 ^/ Ito get-global-proportion$ O4 T: E$ K  o0 ?; X
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. A5 _3 g+ ]$ L2 R1 o% Q% u[set global-proportion 0]
: U! [1 e$ j+ w1 z0 D9 q, N7 u3 X[let i 0
9 U  @5 E, p( ]' w3 Xlet sum-money 0
% _2 U" v' u4 p& u2 \  J% }' ~while[ i < people]
( u; F% Q% N, T9 b[+ u; }2 e2 U7 q  J( A6 G0 K
if( length (item i* t' e. A  n/ n7 i+ U% @5 }3 I- U
[trade-record-all] of customer) > 3 )
! B* J: K2 s: C; ~6 H
[, o! G- L3 {7 d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% }# n5 y( H  ?0 c5 R4 x( ]
]
4 j& g, e2 b" z! h/ `  |2 B, z6 K]
+ V( W. b, P- j3 a2 plet j 0, v  x0 D7 G2 p* q! {& o* q8 c' V
let note 0
. `+ M; x$ U2 y. x. \5 dwhile[ j < people]; q3 ^1 e; Q  Q* N0 ?$ i0 O7 d
[
$ K# D5 l" a; \. c9 iif( length (item i
" ?: A1 q7 o' s4 k$ W2 ~[trade-record-all] of customer) > 3 )
4 w- \" y! ?0 w9 C+ O3 c; j
[' ]) t, @7 }- H# J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. J# b4 g8 w6 U/ |" j$ ^0 o' S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: i2 a2 T, j/ l" Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  Y/ D, r, D: p. q4 L  U" X8 G]
2 L5 {( f3 f% O& `: s( |]: B9 Y# `9 q1 ^+ [: ?* e
set global-proportion note: j' _9 H. c6 [$ a
]
- r; e! r6 b/ z- y( x6 l& cend% V( A0 h4 _" @+ u

3 O# o. Z4 ~$ K, dto do-trade
2 y- h- `) K/ B" J- S8 _;;
这个过程实际上是给双方作出评价的过程
, O! P( B# h4 x8 Y3 V: o( h0 `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% w/ l% ^( b+ \: u7 s4 cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; D* k/ u$ U$ ?; A! T; H0 e
set trade-record-current lput(timer) trade-record-current; a2 A; R1 e. X+ a. b- }
;;
评价时间
# |" ~9 {6 j& Nask myself [6 e( Y% g/ r( G$ O' _! l
update-local-reputation& v; |- E8 Y# I( m' {3 h2 g2 Z
set trade-record-current lput([local-reputation] of myself) trade-record-current8 R8 r" Y. M, Q' L, X. X5 _: H
]) _/ U" y% w- E3 B/ W3 X1 F# w' G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. z) u+ O& }4 `" F;;
将此次交易的记录加入到trade-record-one
; g1 l8 k0 c0 a) ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& V. A! g. C) s" q5 {9 X! dlet note (item 2 trade-record-current )
; o( P9 ?/ }1 nset trade-record-current/ w7 J+ M7 C' }+ X( S
(replace-item 2 trade-record-current (item 3 trade-record-current))

/ }7 ~0 a+ z7 k  Sset trade-record-current
2 i  O2 B/ c0 }, Z2 `) `(replace-item 3 trade-record-current note)
" w6 g0 l9 Q2 I) V" R/ T) w) S+ d6 V
4 y; N. G( ^: j! ]  z9 ?8 I
8 ?7 r3 y6 l% ]: C9 J3 l0 {
ask customer [4 u; }9 [3 S" B% A6 Z; O& c
update-local-reputation8 r- y+ s1 ~  f
set trade-record-current
9 [" X" w. C7 P$ x+ Q2 ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, y' G: x/ o4 N5 p]7 o# \7 d) a1 F. Z; r* ^
% l3 @) O/ k% Q% p' W1 x! X
0 c+ P6 `+ X0 Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) B# D7 B/ T, C: k# o. {
% q, [4 N$ {% ^, m( v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  U! |* }3 ~" T5 W' H
;;
将此次交易的记录加入到customertrade-record-all
2 o0 X& h( h) D/ W4 Rend
3 |0 B* g( T" }7 b  G. N9 n/ g/ y! H- C' t
to update-local-reputation
2 j& t( X- w% e% ]% hset [trade-record-one-len] of myself length [trade-record-one] of myself, n( q$ O( E$ H% {  s' r2 _
9 ^  ]2 n7 ]9 P( L7 Q7 p2 {
( C5 u6 W5 t6 G) ^  R) G& ?: d
;;if [trade-record-one-len] of myself > 3

! U. L- ~1 J/ S4 [5 ~' j. pupdate-neighbor-total
6 j) F5 _8 _6 f+ c+ ~;;
更新邻居节点的数目,在此进行
. l/ }9 b2 q$ E% |) Ylet i 3
6 w6 ]" ^  l  ]- r+ }4 H; Jlet sum-time 06 r2 o6 p4 q; E8 x- c1 N
while[i < [trade-record-one-len] of myself]1 k# \# N+ J) g; e
[
, g2 f$ M5 `& ^0 D9 Z, M0 @# _set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! h4 ?' ]. z$ o, _7 }
set i
" l! C+ _( }' y8 ?; ]7 c3 r( i + 1)
. t  C. {  c* W: z: l% L. U4 o
]5 o  }9 V0 K, R' {! z. n! s
let j 30 r8 J  |# A/ `5 Z& m3 @* z( [0 p
let sum-money 0$ x, @1 R. r. j5 E8 W% q- h
while[j < [trade-record-one-len] of myself]& Y* Z, |. w7 |
[
0 f( z6 _: q% R, e! G" L' lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! D# ~) \5 ?  A5 X
set j
8 K& x- O- F* I/ x. Y& F2 ?3 r( j + 1)

' L$ P3 J6 r% |! z" n1 U# P]
1 p5 v  j5 N$ v( B. @let k 3
& k* o2 P1 o- ^/ U, Ilet power 0+ p4 l2 b3 J! ]. C3 P
let local 02 k$ @5 d2 |" L
while [k <[trade-record-one-len] of myself]
4 H! `9 t. `$ O. l$ ~[' O/ D# L/ H) m
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) + D( ]" T8 C+ i7 V# N3 N
set k (k + 1)
) p" ]8 s: z2 u$ j]
& W+ V& C/ A3 S/ l; `set [local-reputation] of myself (local)
* G: t( i8 ^9 Vend
4 U9 `1 f* S# y4 X: e
+ G; }1 @* a2 _& G, d% _6 gto update-neighbor-total
3 ^7 N# R  H9 G+ e4 |6 C
; C, _. x" I: Z; }" T* X/ Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ l' ]# G9 r/ g7 T, E

$ z/ {- B, J! w: `. _7 ]) ?

' q9 z/ X! w4 [1 m! p  Qend! C" m; I8 o( a6 l/ p

( X5 j$ q* z0 S0 Kto update-credibility-ijl
; L. g0 X! S& G3 N; O8 y# I! U
* g; \5 f, o& e8 Q* [9 F3 t/ 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。
3 |6 t* q3 {- ]) [+ ?let l 0
+ F! Y3 R9 v& w7 _while[ l < people ]( b$ Y. O4 M/ H0 ]# D2 o* Z% W0 s
;;
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 k- j! k2 l4 ?$ m8 R) M+ F7 j[
2 M/ c7 E4 q0 x# o4 V0 [: ~7 i8 olet trade-record-one-j-l-len length item l ([trade-record-all] of customer); y# d& k# h5 b$ H) p& Y# y
if (trade-record-one-j-l-len > 3)
6 |, _4 B" m7 c$ b, U; z9 {' m$ C[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
" s1 v3 t3 y. e0 k5 Ilet i 30 p2 q, W! ]" J3 f& G+ k/ _
let sum-time 0# K; Y! H# w- f/ N
while[i < trade-record-one-len]) N: `3 J4 k# H
[
% _" ?6 n' v8 b7 Oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 w! A1 c- a* B. u. G9 V: F
set i
) [( _  d- a8 u/ H3 i' F' b( i + 1)
0 d5 K2 ?8 p- K; i2 B  o- z' Z8 D
]
7 C* q+ k) f4 \, Blet credibility-i-j-l 0
' @* C) p/ u. a/ P/ L;;i
评价(jjl的评价)
7 V0 `. v9 `% Llet j 3- ^& O5 K& z" K6 u9 P4 z+ f  z
let k 4
! Z8 g7 a% |2 B! }+ `- xwhile[j < trade-record-one-len]
& \8 ]; ^* @* b- Q" T[
" {+ S8 Q+ i# ~) Z% S8 gwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
7 e; i  a! g' y7 E* n7 K! u4 gset 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)
4 o& G- x3 K0 l7 Jset j
9 w% W/ W) w$ J( g( j + 1)

" x5 |7 s  a; a]
+ X3 M% Y3 ~3 E  n) p$ x: n: z' `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 ))
+ C$ |: @6 h: v1 r  C
/ _  B' {0 g9 O4 @1 F1 U  w; q0 F

0 ]9 N4 e+ p8 h: s9 f4 y" D3 Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 g. l. }- D, i' ?  O. b. x
;;
及时更新il的评价质量的评价/ `$ Z" Z3 Q# \6 G6 Q& L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- L: I: N( g$ h; j1 m& a; ]/ p# G
set l (l + 1)
" w. {  _% Q) x% ]8 s  I7 j+ N]
% v  p9 M2 b" |* E$ H9 Fend- t0 t2 }* |. ]: G: C) G$ G% R
- J. F6 I0 V5 @1 d/ M
to update-credibility-list  W9 [  S, t) I8 m
let i 0/ e; X& p. d- H1 Q9 `
while[i < people]
3 K- w2 a( U! r# R[
' }, G' O0 C' Q' s( ]  W4 E; m, ylet j 06 l( i) t; e- w9 Z4 @' g2 P
let note 0
* d, v# ^: ?1 p: j2 M. Nlet k 0- j3 T" Z; w5 \) j  M9 h4 S0 |! C
;;
计作出过评价的邻居节点的数目+ f9 x5 L, A" Q. q; d
while[j < people], y) {" _, Z$ @9 w: A' n. B
[
7 e/ T8 o7 _, N: rif (item j( [credibility] of turtle (i + 1)) != -1)9 R- ~3 q+ V# D' W5 }: ^3 e  W+ }
;;
判断是否给本turtle的评价质量做出过评价的节点
% s; l" q, E) c  V8 s$ M[set note (note + item j ([credibility]of turtle (i + 1)))
) K$ g4 i* ?* I0 u$ X. K;;*(exp (-(people - 2)))/(people - 2))]
; p" D1 c* q5 |
set k (k + 1)
/ ]4 V/ [0 r: ^# Y. L$ x7 |* O]
. P& E" e. H9 n  H; t& Rset j (j + 1)- f* N! k6 U4 Z. E8 Z& f( K: I
]8 w: H/ J7 d3 v6 u- G0 Z4 {$ \
set note (note *(exp (- (1 / k)))/ k)
, N, P2 Q0 K% N% z) Q- C0 kset credibility-list (replace-item i credibility-list note)
* o8 h, d. ~" K$ Fset i (i + 1)
' T" |% d2 t5 z$ Q* {]9 c1 D& T3 p9 P2 j% N; s
end
4 U* Z' T0 [4 q) B. N( u* ^/ R2 W8 j2 d$ g) h9 k' q5 e
to update-global-reputation-list% ?0 v9 {) Q8 _5 ]! `/ D4 T& T
let j 07 V1 `( H6 \% k# p. |  X8 |, q8 C
while[j < people]; @1 p% a3 B: F9 Y+ T
[
. U. x: X+ j$ ?0 mlet new 0
: G4 Z4 Z3 H. `8 F3 e1 S9 Q  X;;
暂存新的一个全局声誉
( @8 z; m4 {% _- H+ l* Ilet i 0
* B2 q/ |2 W- z9 w2 \, Slet sum-money 0
$ [( s( s+ _$ ?8 [# w" wlet credibility-money 0
& G) a% \' {* t1 W) q7 _; f' |while [i < people]5 d" ?1 q& y5 l* @
[  s. |! N# `9 a6 x+ R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; o$ h* q; j0 W4 ]: ^7 hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 N6 N7 u+ C6 m# z9 |" \0 m
set i (i + 1)7 C" S9 b5 o. Y6 I9 W* D5 e
]
4 m: }# _* D9 o2 E, E( S, ~: Clet k 0
0 o5 k' ~' {8 M, [8 S3 Z7 ?  b! dlet new1 0& L$ h) Q1 |. c2 k  A
while [k < people]
) b3 E0 n0 K( j% j[
8 ?6 D6 g: o9 h0 Sset 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)5 ^1 G4 W; B) F2 d
set k (k + 1)
0 Q+ @3 M) d- ~& C4 k3 i9 ?: j]; i7 u+ e: t/ S/ ]# Y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ \  P& P7 F5 X0 S$ Z3 O. V! ?set global-reputation-list (replace-item j global-reputation-list new)4 Z; n: K% B+ Z9 X0 x
set j (j + 1)+ c8 A# r7 M0 k% j7 i; i: x6 Q
]
2 _. H3 Z$ {  L# ]! c1 j# g- m; |end
) b: J6 I# B, }  Y$ L, [" H) _  e9 W1 M5 x2 j0 O# \# J2 k
* k, ~4 d) F3 x* L$ x2 K+ H& \

6 s0 T9 R" D, P) S8 @2 oto get-color. k- F+ Z9 b, W2 z6 [' O
5 a, y) l6 t) o
set color blue
. A# v& x1 J& b3 ?9 M, q
end% e, T! G% e  c% c. d; F" f

; T* k1 v+ k5 r% l8 s, vto poll-class/ r5 D9 n/ u( q& }- h: ?" m
end
7 }/ J  ]. j9 i& I
; v4 \! x% n8 |- t8 h! p+ G1 ]' g; _7 [2 Ito setup-plot1- Q, A8 i& K; u" W1 f1 h5 W* z
1 J; N4 s) h( u+ j; J8 G
set-current-plot "Trends-of-Local-reputation"

7 k9 B$ u$ f2 p5 m. r! ~  r( U' \- l) _9 x9 {
set-plot-x-range 0 xmax

" P0 Q0 M& Y/ O: y3 X3 x! `) {% ^
set-plot-y-range 0.0 ymax
4 `/ l* U% G* t7 ?$ j% p
end
& \2 {8 M% J& S& L* m# E! {# o- _( h4 M4 Q7 f8 e  @1 p
to setup-plot2, d. ]4 f+ }; t8 p0 ~
; w1 O* F- D1 I# E
set-current-plot "Trends-of-global-reputation"
8 G0 v4 c9 V# L+ v# \+ Q  _
1 |# f- k3 b) N8 Q. m
set-plot-x-range 0 xmax
+ e6 t! D! R  p7 {2 t' p

; z( I0 }% ~. yset-plot-y-range 0.0 ymax

' j; ~, [2 Z  Q% F9 W4 m9 z) l2 N& O0 ?end- W, j- y# N3 K7 J5 F

: [; ^4 B: x  I* A" Z' a& e& tto setup-plot35 F5 s2 u* C! I- ^5 R
( k1 R; H/ j7 }. j1 Y$ {  x: X! n
set-current-plot "Trends-of-credibility"

6 H  h  x' ?7 [; o) `& D4 ^
' z  L, \2 j+ e2 y) V0 J( rset-plot-x-range 0 xmax

+ v1 U8 y# ^) A; O; Q/ _# G# g+ [
& E9 B! y; J0 zset-plot-y-range 0.0 ymax
6 X. Y+ v( A! H3 ~. y" b
end* m4 Z9 M; z8 U1 ^
* ^( g9 P! S' |' {8 E
to do-plots0 G! R9 ]' A! y: Q) u; Z/ |7 V
set-current-plot "Trends-of-Local-reputation"+ f# f( y7 h2 B0 _; P- A1 D
set-current-plot-pen "Honest service"2 e, I2 y& T! |
end# P! c# Q, _) F% }: z
* T. Y4 i" I1 t  u7 C
[ 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.- R* X5 w6 O8 Y$ `8 a$ V
7 j0 ]1 N: N! S- H9 t, P; j8 }# t. G
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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