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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:
/ n8 i3 Q! ]7 v" ?% k& Gto do-business & n  G* ~( {- Z* h  f6 X8 G
rt random 360' Z6 k; {. I1 w" p
fd 1  R0 T1 J- A- R9 J0 \
ifelse(other turtles-here != nobody)[! l1 s' V0 k4 o! N* S
   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.. X/ \: z5 ]( u0 g( e8 F
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' \+ n3 M) F* C" R  v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 B- e7 v+ S' v1 M
   set [trade-record-one-len] of self length [trade-record-one] of self
, e0 t$ ^4 j' {' a* {   set trade-record-current( list (timer) (random money-upper-limit))5 t8 I0 t7 J3 t& {
/ X  ^5 |$ U$ K8 i
问题的提示如下:& v* {( l' _4 M, j  i+ n1 E& u
* U' a1 c: C% _/ T, x
error while turtle 50 running OF in procedure DO-BUSINESS, m( _& }+ L% g* P, V* r; V
  called by procedure GO
6 G/ n9 I9 g+ g& n0 k1 G4 dOF expected input to be a turtle agentset or turtle but got NOBODY instead.
: o4 {/ A7 D  W% i- i) ?3 b
(halted running of go)
; T- a% B$ l6 w, L% d- {3 R# g! N8 D' E( x) ]4 P
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~~
; e  R6 _" J/ H. X3 X" Y另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教6 I: T7 P2 r- L/ ?$ w/ P% B
globals[9 J% C4 o* v$ ]! ]
xmax
+ f3 e$ N) W6 P5 `7 fymax
5 o0 L5 U; R0 D/ S" K9 V( G9 rglobal-reputation-list
" m7 }8 N6 y7 l& S+ Z- L0 l$ V, `8 Q; T7 O
;;
每一个turtle的全局声誉都存在此LIST/ \( ~/ U" v8 O2 U
credibility-list
; u" N7 D% C) z; A% _;;
每一个turtle的评价可信度: ]" w; S9 s& c/ ^. {
honest-service
5 C! m- L# a/ y" J& q( e/ A4 runhonest-service/ R5 B& y6 h! {7 g9 V( H2 L* n
oscillation  G% ~0 W% `, q7 {! R6 e
rand-dynamic: s1 S8 F% V# \* \4 q
]
- Z! i  ?8 w' e5 b$ D
5 S8 Z' J; Y  r* w! T! Y& t, Mturtles-own[
# P7 w) X- d* y/ s* htrade-record-all! ]: S: ^3 D) ^) |% C- M
;;a list of lists,
trade-record-one组成
$ ~$ q/ o" X4 @" J  ?* H( Qtrade-record-one3 l- A* H$ e+ @: `5 h2 [3 U& Z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 }' {6 E" C0 B, |
" K# p$ v: J1 I;;[
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]]
2 {. D8 F8 ?6 f9 itrade-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]9 Y/ j" F/ J& X& j3 b9 P
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
/ Z+ G5 a/ B, w8 K" `9 bneighbor-total: P8 t7 _( a) a7 c1 s$ J, h
;;
记录该turtle的邻居节点的数目$ S, k6 y4 [8 z5 _! ]/ h6 ^1 {
trade-time
# i; i% p2 P0 o1 a8 j;;
当前发生交易的turtle的交易时间
. B( `6 d& Q+ T+ bappraise-give* G* j7 Q  q" ?7 Y; y' A# H
;;
当前发生交易时给出的评价
" J9 z. \: b+ {# P2 W; wappraise-receive
7 Z4 Q" j3 Y: W. w8 ~) ~; e;;
当前发生交易时收到的评价
$ j; s: Y# ]$ M7 \3 k& Rappraise-time% s. H3 n* c2 _* n: U; E
;;
当前发生交易时的评价时间
: K- x% W4 z2 A/ jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 l5 ?' R6 x# e5 etrade-times-total
2 V5 P/ J4 s9 c* u" X6 v  Q$ H/ I;;
与当前turtle的交易总次数
8 h, [6 y; p& x1 K" F  utrade-money-total& v* V* N7 e/ B4 s  @
;;
与当前turtle的交易总金额
% }1 x9 b% v& l  O7 ~: ?) b+ glocal-reputation
2 s2 L; P# R: l0 e3 w$ Xglobal-reputation
, V0 N* I" ?/ l1 Ucredibility, x6 {( J9 |! O+ A
;;
评价可信度,每次交易后都需要更新
5 A6 [4 f1 ?$ D! h6 D9 `& g0 ocredibility-all: q- M, B  W  Z9 b7 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
6 r7 B! H9 u) A4 l
7 V2 A2 W4 }8 a& [;;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 x% S! U7 W: J0 v! B2 o
credibility-one& J% A7 G. f  }8 w2 \4 q" S6 r2 K4 ~
;;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
, J' r& q. X( X# D1 `  y3 W* r2 c# \global-proportion& J- O5 M0 U4 \
customer7 U- Y  e7 s. Z
customer-no
+ \  O# k) O' I6 W2 s/ H, H+ A2 U- n- `trust-ok
3 s+ u# R4 M% r, g8 ^& B8 F8 W8 Strade-record-one-len;;trade-record-one的长度/ l# B: S2 w" }3 H% h0 H' q
]
. Y) ~2 K5 X$ E. u# z4 {* L5 T) N0 m( K
;;setup procedure5 H! ?% ^/ W( V* j2 Y9 ]$ s' @- |
6 f3 s' N! e3 D2 n: U
to setup
* T1 b4 Y0 j) m0 R: `* Z2 |! \" ]2 |: |) p' \( A/ }3 y) P9 t
ca
) z* ^# |) ?% t

& X4 u! N! Y( _$ Binitialize-settings

1 S0 N4 \7 E, B  E% Q
, t( q9 Q7 Q: W( @6 [crt people [setup-turtles]
6 U* p! ^: I9 @+ A; V. P

/ l7 \3 z5 S; K7 yreset-timer
9 `& j  g8 p8 I: x! a/ o

: {" d2 g0 L' s. k' b* x+ fpoll-class
, g! I7 r6 K3 \# L3 ~4 h& V3 z/ s

4 k8 Q) J9 {$ {6 X, L9 y3 asetup-plots
1 y4 Q- W6 p8 |+ ^* ?: Q- S

5 V; b! N/ J+ T" h+ ydo-plots

+ z, i& m1 U0 C2 _; g, E2 ^end
0 V4 t8 h2 o) ]" R0 z% x4 d# c6 e, }5 Q/ i/ ]
to initialize-settings
5 F1 g: {6 W) I% [5 N
# D9 E0 l, T, }( q. B  mset global-reputation-list []
) h! y/ _. h' }2 [( ~; @4 A# z0 \4 c

! R9 F7 p- [. ^+ }9 U! wset credibility-list n-values people [0.5]

: a  P2 U' P: r
7 |6 }1 H4 b  L4 Wset honest-service 0
* D( p/ @4 T$ |9 e9 ~

' Q  w& T7 _$ Z: `$ O% U( Sset unhonest-service 0
2 ]9 ~8 u, L8 F8 n& k5 r- S! v7 Q

8 x# K. f- B5 T$ W1 K  J& ^; Pset oscillation 0

8 a3 t. u6 L" v" [
: F# V" h+ ^9 j. L! _2 v" B& nset rand-dynamic 0

8 H* g5 w6 n( `9 V& i5 xend9 k+ E- Y/ N, |7 b9 o! j3 G  p
3 b* ?9 k; y" M2 q1 q- F* C
to setup-turtles ( p2 F; r% `0 l; R9 f& f) f
set shape "person"4 G+ J1 e' r7 x, y9 o5 g% b  I
setxy random-xcor random-ycor8 j) j' f: Z( |5 y/ _( G+ `
set trade-record-one []
, o% b/ r/ H9 n" Y+ Y" D
' j$ @% J6 A% g# u4 R2 h' Q
set trade-record-all n-values people [(list (? + 1) 0 0)]
; H' z3 j7 |1 F6 S2 u! s6 S- L

: Q3 ~" R% M8 b( Lset trade-record-current []9 S: Y$ Z/ h1 H/ ]: T) k
set credibility-receive []4 `6 C( O: N1 G) ^# j0 l$ x
set local-reputation 0.5
: C; X  c/ J4 r1 b. U. hset neighbor-total 0" R* C# q, }  U3 Q
set trade-times-total 0, X1 w8 l8 k' B3 ?+ H% s+ `3 N1 ~
set trade-money-total 0" ^! B0 ]- c$ o; |! `/ ?
set customer nobody
! m/ O! T) K9 C( }5 W. A$ A) Iset credibility-all n-values people [creat-credibility]
, S3 H/ p5 i! X& P* n$ {0 \set credibility n-values people [-1]
% A& i& n; ]! k: |8 ?( }get-color1 i0 Q( i7 i1 c
! ^/ W! u6 l3 L+ K
end$ X6 P  ]# p8 S6 U9 r) i

. h; ]: Q/ h4 j+ ^" Zto-report creat-credibility
4 T- t9 V( Q; freport n-values people [0.5]- @  V+ @4 F" x% p2 ~" o! q
end
' U& ^8 r& k& c9 s' m/ H& f! W* t0 X  \$ t* [7 X) z# w& D
to setup-plots$ X" b" p, z0 F) q1 l" c; C
. O! V6 N9 V* Q' ]# T4 F
set xmax 30
0 ^! C: A7 g4 ^2 y8 ~9 B! [  a7 ^

' ~4 T0 ]$ s/ ?0 Q$ K, K/ H3 ~set ymax 1.0

/ g+ [7 n2 G) R1 x+ c
' X2 T' L' D8 t' Q, C+ iclear-all-plots
1 N8 U5 u% f4 E
+ g+ H- u7 i% c
setup-plot1

+ a& f# c; ?1 G( x! \
# S; ]+ e& d# r) ysetup-plot2
) v9 t/ V" D& D' x$ t

3 V3 g* d; A; m% lsetup-plot3
. E) J4 @' y: Y' z, _
end. K  y  f& K  A/ b, e$ j

" v2 H+ c# K6 g5 ^5 Y" O& l;;run time procedures
3 c+ B. s. ^$ \5 D1 j3 y. y1 W1 k) W* `3 X' z
to go
/ D1 b- x; U; v' m+ s& X5 P& I2 j5 q& g' y
ask turtles [do-business]
6 F# `% f" C8 ?2 q  v& p* W
end7 _2 k: C* r) b# r
. _1 _$ d6 ^/ z0 [
to do-business
- \" b% C) X: l6 U8 {3 m5 n! ?

, J# }$ n- E  D8 A) Z9 n" M8 X; i7 [9 N4 D+ G" `/ U
rt random 360

# V# P# X( H7 C, E2 a  U4 g
% d3 p3 R' l/ e4 o1 Pfd 1

4 J+ G4 u7 W2 B& L% a$ h0 {) N; ?0 n0 ]; q5 H
ifelse(other turtles-here != nobody)[
' i# N- b5 |6 ]6 S: H9 O# l
) @7 }. g; M2 B, V; B; {
set customer one-of other turtles-here

( J  P" ~# J. N3 e6 q, L  f- f* t! K7 H7 ^; Y5 B1 ^. Q
;; set [customer] of customer myself

, [5 u! R. P8 z4 t
# _$ z: k( }5 Zset [trade-record-one] of self item (([who] of customer) - 1)
. F, l' G6 a8 G$ u7 Y! ]* A[trade-record-all]of self" d. c0 J  d" s2 p& b. R
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 q, n7 \. a- \* b2 I/ k- j, B3 |% X# D% ]# [) y
set [trade-record-one] of customer item (([who] of self) - 1)
8 I$ m) A. K. \6 U[trade-record-all]of customer
: ?9 X/ x3 _- o6 n% c1 s& B7 h! J( y

5 H' R9 F. ?( X+ l" J' T6 v, l- sset [trade-record-one-len] of self length [trade-record-one] of self
% k8 o( R' l* l# [' m

+ Z+ v6 a5 X6 H4 h9 o' s% A& sset trade-record-current( list (timer) (random money-upper-limit))

. ]5 O& S! Y6 z: p# J, Q
5 K& f0 Y0 P) D9 ]1 Mask self [do-trust]
. y' `1 w# W* s3 a;;
先求ij的信任度! I# U; l" c% L5 ?& y! U( @
; k) A% E3 y; o  e* s0 `) j: f
if ([trust-ok] of self)
% R  p  a. [( l. v1 D; t;;
根据ij的信任度来决定是否与j进行交易[
" u* G' b7 d* l5 cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 A7 M2 G2 g) o! g; ^

9 `- x, G  E1 g: N  a[

; A( X& y8 c2 A( v5 M$ e5 y2 A, Q. p: v8 [# s5 f% j
do-trade

9 q. P9 V/ M; x8 M/ [, k
  R2 l. `( q2 supdate-credibility-ijl
- h! Y! G/ Q3 _1 }1 O/ B! `  q2 O

" m. D% J& X( l$ ?6 {1 G9 B0 ?update-credibility-list
1 A+ W+ y# E5 o

+ U! k4 |, n$ c9 E2 M' X* G: O( B1 g4 @, Z! X! U
update-global-reputation-list

/ b$ Y7 n* R! p2 V, n, U- V! }, c
3 C( f2 k- G- u0 g4 L4 q- Ppoll-class
! u; ]% h- }7 }# S8 j6 C1 ?
' I: X6 C) A8 ^" w# e7 b+ ^
get-color
6 }  w( {7 o. L* h( d7 U

) ~2 ?# ~" h4 ~+ F& ~]]
3 m! X# D) e& |5 |: J- {1 w: e, v/ z- B% H3 z
;;
如果所得的信任度满足条件,则进行交易
- t+ y  I- t0 m, M  w
. W- u5 E* {/ n4 ~/ `$ W[
  o& f" {9 P% c7 K' Y% F$ L
+ V+ S) A, f) q# ^2 T
rt random 360
8 A1 w8 D9 f2 j8 o6 N
: E( s) S! C% i, K1 R  p5 K! E
fd 1
4 q- T2 I% y* g$ y( B; q3 g. y

. ^; R) d3 K0 A4 D2 V5 R  S]
9 v% L+ D& G1 R) |, y
( B) \3 ~  k/ }8 P9 {9 ]
end
+ }6 ^: D* W# a% e

: \% \; d& l+ D% T, c4 m5 Tto do-trust
% ^$ N; l$ e7 i. wset trust-ok False' O- |: M$ |* q! x4 {# Q3 K

$ n  o) |  E5 z! _/ r+ j/ |
5 ?, v& ^$ \$ o( ~* g8 u
let max-trade-times 0
8 v# I3 w+ S  vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 W7 ]) g2 L* }" h$ klet max-trade-money 0
% X" J7 S1 I5 b5 V! g& S5 jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ i' }# x3 B0 L& a$ S. G9 g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% W/ E6 ^( I5 T' Q2 a1 b
' e5 g, e1 R) ?% E% c  L* G7 I

7 J0 O( T( R* V' Mget-global-proportion) f4 B. b# Y8 u/ M( P' V  m8 j0 C* L& l
let trust-value
0 |! U) K2 R! K& `1 U; Qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
% g; k2 L5 o; @; f
if(trust-value > trade-trust-value)* }/ I9 O5 T3 j6 x- i% `) ^. c! I/ j# O
[set trust-ok true]
+ ?' y7 I3 t5 b9 G4 H: Send
& D/ b3 V4 _( _. Q& A5 G* _& l4 w* r9 m$ J
to get-global-proportion
, X& W+ Q$ L3 S+ F8 I' ~; `& Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ F/ _; s6 c) A$ T3 q+ U
[set global-proportion 0]
' H' @1 \$ w* b/ B7 V. U6 H$ K[let i 09 ^2 H9 t- f8 N. x  B9 l
let sum-money 0
8 r1 Y2 i  E& iwhile[ i < people]& c' y& Z* }& {. g
[- I1 [; b4 W7 B& C; p
if( length (item i
0 m4 S- e3 J# v$ u! K& L- L$ K[trade-record-all] of customer) > 3 )
4 O7 }' F' v7 v/ h' \
[
. m/ ?( h! x, Y  d8 Z5 m4 rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))- M5 a2 M8 W/ ~+ `1 @
]! l, b" ]( l2 c0 g
]6 E2 \! z! C: M+ R3 g
let j 0
  w  t5 t& r8 x& vlet note 0
+ c$ W$ e) l8 r: y2 e' b. q& Nwhile[ j < people]
  H3 v9 W: Y! x- Z[
3 P# N  F: D8 i" P9 bif( length (item i4 A! T* `% b4 F8 M3 V; f! A7 I! s
[trade-record-all] of customer) > 3 )
: X7 }' \2 z+ W: Q$ c  [
[1 f" d, I- c/ o# Q/ f+ ]* }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" g% @5 ]  X7 w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" q% a( |0 d6 e/ v3 c
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ c7 V; b: r4 |; Q* R( Q9 \]
2 J+ Y( o+ z1 V. p  Q- A( o2 ]]
* h' z. v- r' `% T- oset global-proportion note
  @: r$ y" I( ~3 |$ ]]- V& D( O5 B5 I' a6 j1 n. `( C
end+ C& |8 c8 q$ R& N- q' k5 T

" n/ A: }3 y$ A: V) v5 g, O1 lto do-trade. G- A0 q8 l4 {
;;
这个过程实际上是给双方作出评价的过程
2 o$ w% |2 q0 W- A. S# f. xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% S3 x3 q2 Y" I  Z8 h# Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 ]. d1 I% R, Kset trade-record-current lput(timer) trade-record-current' a! B, S  C/ S+ c2 w% a
;;
评价时间! z- o: j$ t  q& [
ask myself [
& h3 E1 p6 ^3 P; `* ~8 a2 G3 b! rupdate-local-reputation
% v7 D. L5 K! H  d: U5 E5 D2 N5 Lset trade-record-current lput([local-reputation] of myself) trade-record-current% R# {& b2 t4 {2 J5 H
]. Y: {. i3 Y5 Y+ O4 J0 G: {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: w7 g6 g  K3 V) W& e
;;
将此次交易的记录加入到trade-record-one
9 |7 |2 E' l  Hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 @- n' R( @( ~8 Tlet note (item 2 trade-record-current )' U4 B' W1 \; M- A
set trade-record-current0 G* b/ K7 Z4 o' q& J4 O# {3 O( s
(replace-item 2 trade-record-current (item 3 trade-record-current))

& ~$ B+ d  O9 t0 J0 D0 m9 y" Hset trade-record-current- R, N( N8 v% F4 @# D! k9 Y% n: L
(replace-item 3 trade-record-current note)
' R7 p3 c- a  L! s6 g+ Y( S. G4 b# i% |/ {0 D7 {4 e

# n. D9 q! }) ^2 kask customer [
( l8 R/ m  O* h: l( D/ t3 b* M$ S, D; Cupdate-local-reputation
3 t* b* g$ z( h# \) s( wset trade-record-current
8 R" k1 I4 C: H6 U/ ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* M  r9 A3 i8 I7 n" ]5 Q& h]# |$ g$ L# Z- @. y
( Q5 q. {8 q4 q) I
1 S/ k+ s4 B! F8 H0 ^8 U
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 |- ]7 J2 X) V8 S8 L! x

- r4 Q, e) Q4 {! zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 S- \* m; O0 ^
;;
将此次交易的记录加入到customertrade-record-all
: n" Y6 p, E7 D! n7 z' ^1 Q  _% w! nend3 y0 s6 {4 l# \
7 N, ]( t3 T+ Y" W
to update-local-reputation
- D$ W" K  Q. Vset [trade-record-one-len] of myself length [trade-record-one] of myself
* t: v% [: L" G* Q
9 h; c' d( r; `7 J% g) j# b
9 i6 B3 P" v6 p, D* d* Z;;if [trade-record-one-len] of myself > 3

: D0 s  g- i& G- Q0 p" e3 v& [update-neighbor-total
4 Y& d+ h0 _5 r+ t;;
更新邻居节点的数目,在此进行
0 u8 _& c7 S4 W  B& x" X0 Olet i 3
: M% `) o# \+ R( X- flet sum-time 0( v* E# t8 }" w# m4 E$ v2 X) [; I
while[i < [trade-record-one-len] of myself]( Z  D& H% Q3 c$ K
[
4 d/ u6 ^' h9 e$ X: K& mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- Y7 x1 o  B6 i7 u! I
set i5 `, O  {, n3 X' a/ g8 q. u
( i + 1)

( w3 ]6 ?" d3 P: h$ i]" r7 D5 H( t, N" h
let j 3
, K* G. J* x; v! a3 ?6 Ylet sum-money 00 i) ^$ \: C" S, H
while[j < [trade-record-one-len] of myself]
4 g: {) r2 q; f/ y8 _/ F[& x! r: }6 y& i  O' c+ ]2 L
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)
  a4 e& f9 M+ C, q8 ]( Xset j: v6 E+ G, ?3 O7 d7 {8 c
( j + 1)

) J9 Q& m9 ]; d) t( b; F]' L8 [6 u* I2 o2 v! G- h
let k 3
; u( O6 e% I7 K  d. Klet power 0
# c) F. |- [  Y$ d$ Ulet local 06 X+ K* W  m/ Y; |
while [k <[trade-record-one-len] of myself]& a8 o* k1 D% j. b& w5 j
[/ E6 B# y. v, Y
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)
. L$ O5 `5 k2 \% O2 yset k (k + 1)
& H4 P; H1 s4 z8 V]
; }4 Y* i4 Y, N0 u( y/ pset [local-reputation] of myself (local)
5 S; L# k! f$ Q; k/ A9 qend* U' G: A8 w) O% o0 F* Q
3 J+ R8 C1 P5 t  S6 y
to update-neighbor-total
+ H1 |9 G: B6 ~+ {, A0 }% u0 V1 A& i3 a- I3 \4 [7 q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& a. x/ _7 Z7 c& v

& g+ U/ O& p% s4 W+ L
7 P' A6 P- {) C  ]  Z& w% \, r4 V
end! U/ I% G+ }8 q( U8 J
4 w0 _( O+ @  L* l
to update-credibility-ijl
5 r5 D+ c( z: d, d+ p! J
" L$ D1 G% I7 F6 s8 y$ f) p6 u5 A$ _;;
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。* q9 O3 R  s- n8 J
let l 0+ o/ G; ^, k) i6 j( G/ }/ S
while[ l < people ]# g3 S2 t. [$ |& ^: f5 s" a/ K! G
;;
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6 H' E0 n7 S( M4 N
[
3 G7 y; v5 F. n8 T4 Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 F6 W0 h3 J" w, Y: z/ aif (trade-record-one-j-l-len > 3)8 ^7 I- h- c& 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
& q2 a( p3 A/ @  `; D  Y- Flet i 3" Z4 t2 R" T9 J) `
let sum-time 0
3 g- h  J) B8 e& {' }% n. mwhile[i < trade-record-one-len]
; f* {, f4 }" e& }[
* `& x, V, V7 z* X  T7 R: ?set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" ^! k* h: O! t2 K9 }set i) t8 e4 l. C; e' O5 W' T, |
( i + 1)

9 M9 p% B: @1 E]
' ^7 G2 N* a3 R' Y! Q  e, Glet credibility-i-j-l 0  t: k- o( p- T- Y
;;i
评价(jjl的评价)4 h! R( R/ _( K9 [; o1 n
let j 3. \/ T( v0 x! b3 B8 i
let k 4
4 S& d3 `6 {) xwhile[j < trade-record-one-len]" M' b9 ^; ?% Z; a! ~( C
[
9 W3 q; c- Z  P% S' |5 W- D* Zwhile [((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
0 L, h- q9 `! J  p: t- qset 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)5 _  V& f8 D' N; G5 J2 s1 K
set j
4 c% O$ h. s4 F( j + 1)
/ r( j& s: g# C2 k
]
# y7 v- }* r! qset [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 ))
* {+ q0 |! M& x, U! H' v2 n
- b( C8 u9 _$ V* Y' e2 \

: D# K( [. e3 glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: j2 c7 p; G' m! v;;
及时更新il的评价质量的评价
2 [; u% }/ }: }/ qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& F4 `8 ~9 g$ r! Q
set l (l + 1)7 T, t1 Q0 ?/ `
]( C5 Y$ V- Z) c2 ^3 `
end, [% C7 t1 Z6 b, f  }/ m2 j. G

) h7 n- T! C5 w' W; l( _to update-credibility-list1 P' H: x9 ?$ b0 x5 m
let i 0
( _8 L+ \! T+ X8 D+ Qwhile[i < people]& A* E. M" M% k& R- p
[
6 B+ j2 @! Y* \) C1 B8 @let j 0
; V9 Q% Q. H! z% K& X1 Q# |let note 0
' R  a+ S. R0 L$ Y5 J& o3 X% L' olet k 0
6 ~1 ?7 a6 V0 x3 ~* `4 c;;
计作出过评价的邻居节点的数目
. U$ j; H0 r  S" q" swhile[j < people]
, v6 v3 \: s( ?! ]4 d[
0 q, U+ t; O4 s; N. Mif (item j( [credibility] of turtle (i + 1)) != -1)
. G3 i/ ^- a" y- Z2 Y;;
判断是否给本turtle的评价质量做出过评价的节点7 R: Q7 ^" r- v# N  ?+ U
[set note (note + item j ([credibility]of turtle (i + 1)))' g/ K, B5 ?3 Q' T$ L: ?' \
;;*(exp (-(people - 2)))/(people - 2))]
% l/ P: k  `3 \6 o% k3 h( J
set k (k + 1)# F) e! t+ G* T- d3 W
]* |: n* J- R* i# L- X7 H
set j (j + 1), S7 W+ J5 d  k! A
]
% G/ N; S1 P# Y( T/ |set note (note *(exp (- (1 / k)))/ k)
. Z0 p/ U: M) I  oset credibility-list (replace-item i credibility-list note)  L1 o! c% U5 P' g# y0 V, I2 A
set i (i + 1)
* v; q. D$ s# ?]
. o& v, n  d( w, d' D- e& Eend
& W  e: E" P& Z, p  x" s
5 b9 _% s2 W  n" t: H4 h3 gto update-global-reputation-list
/ y  B- Z3 o% O8 ~5 xlet j 0
! x+ B" z6 W  Jwhile[j < people]& u# n) z$ ]( |# {% ^2 B7 x
[
; e! Y; E$ L7 x0 E0 N' qlet new 0) T& L2 P& ^$ \4 O: j% Z9 n
;;
暂存新的一个全局声誉
7 [5 b2 |) A* V8 o9 U0 _let i 05 R6 A! C) C0 c% w4 J9 u! r4 G+ p
let sum-money 0, T6 z. U7 U9 g( v% h) v
let credibility-money 0
: j9 M7 g, Z7 ?$ N% E& m. c& A7 rwhile [i < people]
; q$ ^% ?2 k1 z[9 r2 g) {& \1 L) M
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 B& ?) R8 F7 \' Wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 M( G) [: S' g$ D+ G5 o1 w
set i (i + 1)
6 ~4 Z9 ?: i( l! b1 G; Q/ G- |]
- l& r0 d$ N; k9 h2 M0 W, N1 c6 B1 Alet k 0
  Q0 e/ {, c8 xlet new1 0( o: f$ G4 ^8 d
while [k < people]
& @' {5 i5 v3 f/ m( B3 r/ j9 f[( [6 f! L# Y3 I) _
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! S3 z3 `" _4 U& yset k (k + 1)
0 L5 D9 Y2 i6 E  b]
& k8 e7 n+ ^8 tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! u/ b- z$ h% i
set global-reputation-list (replace-item j global-reputation-list new)
" S# _8 ]' U& oset j (j + 1)# m, q+ d  y4 }; B& Q2 l: h5 n
]1 j% |' N& E9 {
end( t' Y6 U, Y" ~, h: ?) Q7 H
+ o- S8 ~( W6 w7 a* v
: x  `1 k: _7 M2 z5 v& }! h! U
/ m' p) l& K9 o/ X9 m' {) g& e$ Y# H
to get-color
4 \7 Y2 [7 `$ l" [( t
+ X6 }8 m9 x' y4 Pset color blue
4 R* Y9 y* i6 m
end
2 [, t  B0 d9 y0 d" z/ U
4 a6 S/ `! ?* Ito poll-class
# Q$ N/ }+ S% z% e5 w% [1 i6 ^3 P" mend5 j2 K  b# h$ ^$ |- ]8 e
5 C2 ^. G* q8 k! ~4 u/ i; C' ]
to setup-plot1
2 O/ u6 K# `" g* d6 T3 N/ z
! L5 h6 w  X, A: S8 ]set-current-plot "Trends-of-Local-reputation"
; D9 I/ h) o9 z+ L9 P$ p
6 n7 H8 R# G0 A# m% r# C* ^7 u2 p
set-plot-x-range 0 xmax
0 F" j0 K% s+ l! C

) ~3 P  m% u4 mset-plot-y-range 0.0 ymax
. n0 i5 l6 `. q" D, U* T4 M0 n9 U
end
/ H1 K, Z3 E  r$ {# u6 c1 K/ ]) C$ j: d# Q; e
to setup-plot2
: `2 z# t( E: `+ w* @. v: K; L7 R
set-current-plot "Trends-of-global-reputation"

' [0 p7 k5 i6 O" _
# k/ P. q  j7 z; A* p2 Sset-plot-x-range 0 xmax
# x7 F7 |( W& c9 j; o0 O' N

8 `' L6 Y% r5 h! ?# g" y- dset-plot-y-range 0.0 ymax
1 w1 G( A: z/ m4 S' V: v; x
end
9 ], U9 _( ?! }6 N# k* ?/ f3 J. x" M6 K( K# {+ w5 n$ J7 t
to setup-plot3
( B* b% a9 q# i+ v, V9 ~, r" F. v' T, @% v5 V
set-current-plot "Trends-of-credibility"

+ V" F5 h6 u' u1 A
$ k' L# o% i- Pset-plot-x-range 0 xmax
# K! Q$ M% w9 D! ?' |) v5 w

: A, v- g% M  s- \+ w) Sset-plot-y-range 0.0 ymax
' z, I/ o1 a( J8 Y
end
9 l0 U0 V% k5 M) Z
, M& `; d$ ]8 a. Xto do-plots; P- G; K+ [; z1 w2 l0 u8 }
set-current-plot "Trends-of-Local-reputation") s8 T, u  ^/ v4 I) [
set-current-plot-pen "Honest service"9 d. Z1 n9 F, \- H. B) b; Z
end
9 @+ e% q7 ~, B" f9 C1 N1 l
, X, w4 h; @5 i1 m+ C5 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.
4 j$ G9 `5 f- m7 O( Y" T- t! G" ?7 `, D/ T! L) _3 I! q$ _( E2 s) ^
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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