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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:4 ^1 `' O( y* r
to do-business * d6 }, j; i4 i
rt random 360
4 ^, g; H0 }& ^ fd 17 [0 U# {% o( ^& A
ifelse(other turtles-here != nobody)[
. E2 T+ h! f* l7 R- s0 b; K$ 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.* I% K* ~( l" A$ m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( ~/ G2 }; P$ S: T+ w$ e( Z4 M6 y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) j8 v* Y( j; _9 {8 U) |0 \: t
   set [trade-record-one-len] of self length [trade-record-one] of self! E* c2 \3 j. \0 _
   set trade-record-current( list (timer) (random money-upper-limit))
$ D6 v: U. f8 n% f! K2 s
* V7 P2 y# Q4 z" ^问题的提示如下:
1 Y; Q% T' W. o$ L% p& i9 e. j2 H
% w9 ~4 J' P, O9 J5 L8 X0 Ferror while turtle 50 running OF in procedure DO-BUSINESS
, S9 P5 Q  E* ^% q. [2 v  called by procedure GO
" P& j* i1 K5 b9 yOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 D- U" |4 A* `  T) t
(halted running of go)
, p( |8 x$ ~& g/ {. O2 o5 o1 E; Z2 ?' @# {3 n
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~~5 x$ }% R6 U: X% ?) J2 P* 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# C* U3 X) m; J# ~; V
globals[0 I, I! J+ p$ i; q- P
xmax; B5 k5 ~, j/ _6 N% a
ymax' |' M9 k% P4 c  z( g& z
global-reputation-list
3 o  k0 x0 F* ^" U8 Z, T) U
5 W/ H- X3 K2 X* l0 ?5 o% ];;
每一个turtle的全局声誉都存在此LIST
3 [' X5 p1 I1 G' Y" |+ t6 F% kcredibility-list
: e2 Z; C7 S) I1 V3 L;;
每一个turtle的评价可信度! C! t/ b, P$ o' N7 P
honest-service
  s5 e" s8 f2 r/ ?1 N1 Punhonest-service
5 ]8 [3 u# z5 M% O  b8 }oscillation
" r# |% r. y# K! J. F" W& Xrand-dynamic. }- p/ ~) B3 E4 `# y
]" g8 u0 e% d5 G, I( y

) |/ x, S# R" M# y' _9 }, vturtles-own[# r# U# K) l- L9 ~
trade-record-all
& {3 ]  y" V% P% {: F+ H;;a list of lists,
trade-record-one组成$ X% F! l0 p* e
trade-record-one
2 f3 s9 m3 M' m;;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 f* Q7 k( t" Y7 C
5 ~1 I! T  d7 U6 I* F1 O& v;;[
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]]
7 Q% w0 t# @* W$ @/ w: Ctrade-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]# N) I& l. a* V! y# a" W: w
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list6 t' Y6 J! P* q) W  M0 `  @* w
neighbor-total
( f! r  z" Q3 \9 B;;
记录该turtle的邻居节点的数目
. e# k5 K' H7 K) \6 n" V, atrade-time* a; J* U$ v2 a8 V1 Q5 E
;;
当前发生交易的turtle的交易时间! |1 m' B  d& N( d, f4 g
appraise-give' Z1 ~" S& I4 H8 I' _0 J* `- ^
;;
当前发生交易时给出的评价
3 [/ G+ S+ O8 [appraise-receive
% _* X* q$ o2 E; `! x;;
当前发生交易时收到的评价
, i4 u3 C2 G0 i; Gappraise-time/ q# Q/ m; j0 r! s5 [
;;
当前发生交易时的评价时间- \/ k! v$ ]% W6 G6 {! i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 C* e, L5 U; c# L5 b+ H( J7 q' Strade-times-total
3 w& ^, @2 D. u. m- P;;
与当前turtle的交易总次数
( d: t+ B& A2 f! p- b1 Jtrade-money-total
7 }3 s5 A( _3 j' J;;
与当前turtle的交易总金额
) E! C  i+ N7 @; @, [! O# hlocal-reputation
4 v, D* Q  n* G0 H. Zglobal-reputation
4 M# M5 K  ~: I3 `5 E, T' U- dcredibility3 V8 G4 j& P/ e# w* {0 p3 M1 y
;;
评价可信度,每次交易后都需要更新/ ?; n+ C) b, R9 [3 {& }$ e( V
credibility-all7 r! g$ [3 u- b0 G& [
;;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8 ?' h# b( y4 k

" W. R! k+ Q: 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0.5  v' A7 O* t2 k
credibility-one
- d* q- Q8 O9 B: q;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
+ _% [2 E5 a( v* M; D& k# Qglobal-proportion0 v/ R( W+ \8 k" o* A
customer5 \5 f2 M5 C4 c5 M
customer-no8 T$ Z% V6 O+ A1 v, h+ M
trust-ok
6 h; ~8 l) W* ftrade-record-one-len;;trade-record-one的长度9 ^& s: y% X0 F  q, ^
]2 ^$ N- W# r- l, }
' y* ?$ g1 Q* I6 Z2 ?, w+ _
;;setup procedure6 `( G- m- ^# n3 {$ j

2 u/ ?! I. F* f0 d. wto setup
/ e* N* T6 S& R5 W! h# C6 Y, e' J
ca
& W& e( x/ w4 ~1 |9 B

0 [1 o$ d# S1 _  V" w% g, O2 g; Ginitialize-settings
; D9 v$ C0 U9 \; N& V
& g$ i# w, X) L. S
crt people [setup-turtles]

" y( p) {8 T5 V8 [1 C) i. U
2 ~2 D+ ]. s9 b: o" Q! E$ X" Freset-timer

- u6 y; Y2 d4 l2 u8 D
: h6 H  K7 `8 m: jpoll-class

4 H) X! O+ X% P  T' Q  m0 J
' Z4 C7 U1 R7 nsetup-plots
. _; l; s$ \3 P. I

! s  J$ h" `0 t( A3 D" kdo-plots
0 U" o, Z8 K9 i" Y3 O0 E$ Y4 B1 n
end
- N3 @+ }1 E( ?+ \0 w' ?/ T6 F) V+ J
to initialize-settings8 T/ h' T  v" X

2 ]9 W/ L9 ~7 B; t$ e4 [set global-reputation-list []
( V! g4 R  X' u" A2 B

6 q; x  c# t; A: eset credibility-list n-values people [0.5]
( H: _+ l9 i% ^0 z7 z# @
2 c" h& a, V* t! }
set honest-service 0
+ W# w3 C4 t" \7 S% _8 X% I

: S! n5 j; y& O& P. B# kset unhonest-service 0
- d7 f. F* }- ^" Z

3 U8 m: Q- u+ e- y5 M% iset oscillation 0

8 L1 |$ _  W; e5 u' Z1 i9 k1 G. G! G8 }  p# y' V/ u/ C2 u
set rand-dynamic 0
, R+ N. M! S. @; _' ?3 _6 E8 }
end, B2 |3 ~+ I2 h& l# L$ E6 x

2 ]' @4 f/ d4 s/ D7 ]) Yto setup-turtles : j6 q3 _5 P0 R9 c+ Z. ^- a' D
set shape "person"
7 z0 f: B: p& @+ H$ V+ a6 Qsetxy random-xcor random-ycor  n2 Q! n5 u# p$ k
set trade-record-one []
1 Z* M" x5 T8 [7 }# _$ x
  r1 @, z  w- z& i
set trade-record-all n-values people [(list (? + 1) 0 0)]
* z0 V, u; k* Y  }- Q9 q$ c

) d9 v, d3 B) n! F9 L. [set trade-record-current []
/ G) n# U7 H6 y) O1 M- Fset credibility-receive []
) d) Z4 x( x4 D- jset local-reputation 0.5: s5 F* X2 y/ |: m) \; J% C& T
set neighbor-total 0
0 z' V2 A" ^3 N5 {. z% R/ p5 I5 lset trade-times-total 00 O9 X: \" C8 @8 B1 @5 V2 C$ D
set trade-money-total 00 g3 \4 P8 o/ b! w2 a6 g
set customer nobody
# [7 v$ d4 b& @% ?set credibility-all n-values people [creat-credibility]  u* i3 E. w7 G0 [) n7 F  A/ B2 v4 v
set credibility n-values people [-1]
5 U' e' W9 }' m  J3 a7 m% c4 d# Aget-color: P; S- U) y; F# ^* c
9 ^2 q! c" W7 \5 y$ j: Z- L- |
end5 G& m9 j+ U1 G& h* D

& y* B/ G- g7 s- tto-report creat-credibility
5 D* r. E* L' K/ S7 M$ \report n-values people [0.5]
# A2 T4 V6 C; A5 }end
+ V( G3 B- j" v- S! b" u+ X' p5 B, }! z, M* t  t8 P8 F
to setup-plots
  O+ M% j& p' @- a1 n% \# n+ O$ z3 V
set xmax 30
- R; r6 q- n' k- R& R
9 W8 S5 i7 ~( J- I
set ymax 1.0
( F$ H( ~+ {3 v9 [; b

& P: E. C3 d7 F( }' @- F& ~clear-all-plots

* D) I7 k( j2 n! @2 H# B: [
- V: z) S3 N5 `9 o  u) Gsetup-plot1
, k& ]1 _0 f0 s( J0 f3 T5 w
$ T# Z$ y5 p6 r: C
setup-plot2
, T8 r, E5 Q! U4 b# {6 L

3 R; s2 f" C1 R3 F2 j! d3 esetup-plot3
/ N: m( G0 J$ c. @$ i5 r. \" @
end7 w) y5 [( q$ D4 C* Z5 w  R
# w7 e4 @/ N0 c& n  s8 q3 Z+ U
;;run time procedures( y" V% [4 ^" Y. r
0 K2 U/ S& Y+ l% M
to go  J9 y4 G, T, D" ?, b/ |

7 N$ Q& n% C- ^  N7 W! wask turtles [do-business]
7 g3 \+ I' D' b  q3 S2 Z/ H
end  q* z* x6 P2 {" w- M

) T4 u1 x! d7 oto do-business
# J7 G& r/ _+ B  C

2 M* J2 i! m; n8 n; L
- x! t  D. F. ~0 X  l* krt random 360
+ u/ w8 T$ Y% p2 a

% J1 R  t& T) H/ |9 _" z* Wfd 1

8 Q/ T8 m% `9 w) s+ K; S: O, P' K, f. V7 w
ifelse(other turtles-here != nobody)[

; b- q5 p) I7 K3 r- _8 x0 `7 g% s1 h
; N/ q, i6 _, z3 Q3 R5 tset customer one-of other turtles-here

9 V/ Z0 d7 T% l0 s. ?# l0 b* r( \' `; [# _4 q! T8 B0 Y. ]
;; set [customer] of customer myself
7 X' I& D, l& r
. S2 b' L4 d2 F" ?  e/ k6 h" Y
set [trade-record-one] of self item (([who] of customer) - 1)
% D0 \* ~# S0 g/ C  @[trade-record-all]of self5 S# T- K' _0 T  }  a
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 ~! n0 a) R3 E4 N8 W$ a* r! J
5 K* w, C2 }; O) N
set [trade-record-one] of customer item (([who] of self) - 1)
# G( S* @- D$ b' m# b[trade-record-all]of customer

# C: s5 ], M4 V! }! a
2 |" U! q" _* h' M" z. l& J9 Y: Cset [trade-record-one-len] of self length [trade-record-one] of self
: p! ?5 M: O' W% H# [

9 E/ I' K0 \& K  F7 {set trade-record-current( list (timer) (random money-upper-limit))
: O# |) ~) C8 i  f! a& M' c  `( n
3 q5 L6 s3 `# I. s2 X
ask self [do-trust]
& Q. _- \' k5 Q6 S" V;;
先求ij的信任度
- s1 C3 }9 C& |: h: v, E* l) q& m7 |( ^4 Y0 h2 Z- @6 s0 I" E
if ([trust-ok] of self)
/ ^  i5 @7 }6 y1 V4 D;;
根据ij的信任度来决定是否与j进行交易[0 V. A" k9 i! I, x  T6 L; ^0 c) f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! A& Y- T7 ?% X+ S5 g6 X: J  o& M# _1 F1 w& |0 o0 S$ T( r
[

6 X3 X4 C: P1 z/ `9 p  U# b. P
. p) z0 s  r3 G: t3 O8 ?; O4 Fdo-trade

% n6 b6 H1 n+ n& x1 M6 v4 X* d: r8 A0 B; r' {
update-credibility-ijl
2 o* r$ [  u* E/ Z( c) V% V8 K

+ W$ R  h& F& x, b! Uupdate-credibility-list
) i. V' U1 G. }

2 D7 C0 M* _& o3 u7 O# H3 F6 Z! i$ O  A! j
update-global-reputation-list
  j$ n3 K/ x! G
4 U$ p; N) D4 b6 y- R# D
poll-class

$ x. K( N6 [7 N8 q2 R( k5 `0 V% k6 {8 D
get-color

' v/ B( V/ m# o" e! E. U/ p
  p. n+ Y+ n5 n1 C]]
' J+ i5 [; \& r- P& B6 n1 Z0 S$ A' u# o* u# j
;;
如果所得的信任度满足条件,则进行交易# @. R" _7 v) c+ v. @+ b  x" g
$ }0 T6 P# c- ~6 j9 r3 k* q8 [
[

6 Z3 Z* x4 ]3 x2 U6 p0 `
3 b: F( C/ U* f+ |$ t" ^7 ]rt random 360
# T6 c, a. d7 c$ `, ^, Z5 v

$ e# z: H4 ~5 X" z5 |+ L! a. A! j5 {fd 1
1 @+ [6 s; z8 {- |  v
& |4 X& Y5 Y/ n+ [7 G* ~4 G
]

: x. Q8 a( l1 i- n4 O
' f4 n! T% N9 {9 L( H; ^2 \end

" u/ \( y0 A, R0 @" x8 ~! m% ^0 k: |& X; T1 F2 k! f! e: n1 T3 I' R: |
to do-trust
; v# S4 I$ O% V, y; T% rset trust-ok False: _  y0 I; S! K% t& F

* n6 {4 {$ Q' p- m& e" v

" ]2 r2 H* J" m/ D- e! X8 m* }let max-trade-times 06 f- H# W- P/ [; [8 g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- d$ `" w# {4 R& S
let max-trade-money 0( c" U4 O3 l* Y- L: k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; a! d( b; L5 v1 Llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( ~' O# E" K9 d8 Y
  I; q% ]- x! }3 |( A

5 E# g, I6 F5 e# m/ T6 Hget-global-proportion% l* Y6 z4 ~& D
let trust-value  }( s7 ]' k: W5 z# r; d
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)
! X/ w* v1 X  G% u" F+ e3 E
if(trust-value > trade-trust-value): _- h9 Y. h6 ], K; N
[set trust-ok true]" e+ A0 w8 r& r0 N/ s4 D' P
end
! L0 _# G/ C8 R2 ]4 @/ _( w, u+ J+ y! d5 a' j
to get-global-proportion
& O( y& t- m6 p5 a6 t# f& P: h, xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 E' [9 g. T* P, L: h. P, C
[set global-proportion 0]! Y2 O- d( S& t$ h5 P" M
[let i 06 H; B/ W) }2 j' f3 T
let sum-money 0
6 L; S" o. k) {& o4 `while[ i < people]
4 W; s: h+ Q) }1 S[- ~5 g2 l4 T; l/ y5 W( o
if( length (item i$ ~+ @: i4 |' R$ e4 s# x( N
[trade-record-all] of customer) > 3 )

" t8 B% k# t5 I+ g/ v" W" b0 e" A: h  @9 i[8 s2 b6 F8 W% v* c# x4 Y5 e) T! T+ [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), U3 f2 ~/ d3 w0 g
]. J. m) L7 T. K
]) u# }0 v' d. S) Y5 N1 x5 O
let j 0
9 c3 V  v  {3 I9 W/ nlet note 0
7 o0 O" T0 T& Kwhile[ j < people]! a. g: y4 |- o- O
[
6 O8 B  H2 U% Q: Y  o) s: Yif( length (item i+ Q$ M1 y. _% e' i* |3 C% \' N2 k% h
[trade-record-all] of customer) > 3 )
! m. E8 L- ]* |
[
- N+ e/ Z; K  sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ ?( u: g  Z5 _5 G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; [! @8 x$ q( I3 a1 ^[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 Z6 M' K1 w* E8 X* _" V/ _
]
! y3 H. ~4 o" l8 }0 V]
  W0 g( G% p5 n  y+ Uset global-proportion note( E8 l* ^) w) Y5 v
]
' P; i' H4 O, \" v4 ?4 G! T6 Nend
* \/ r# F1 l' f+ Z% C4 Q% k( T
6 U7 m9 E  v9 ~0 b4 o& r& y( fto do-trade3 W, ^, W9 o( g% C3 V& }8 f
;;
这个过程实际上是给双方作出评价的过程
" `6 \: |. f. E% @- N% ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. l% P$ N0 s: e; U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! z9 l, j* Z/ F
set trade-record-current lput(timer) trade-record-current8 J3 y4 _0 X# e2 e8 J$ |/ c( ]% B  y
;;
评价时间
/ L3 g; X" C2 y# gask myself [- q* S# m2 J" X5 A1 [0 q
update-local-reputation6 _* Z  d3 Q8 ^
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ g7 a3 f  R6 P# S" o$ B2 y]
+ [4 i+ A/ v: l8 ~% h6 t0 Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 {& I0 v" e) `, j* h
;;
将此次交易的记录加入到trade-record-one' N0 t. Y! i( D! o4 B" K
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 j5 Q! q* a3 a, Mlet note (item 2 trade-record-current )  a3 u; t3 j1 |! J* B1 k8 R
set trade-record-current
3 `+ F8 O/ F& j$ b(replace-item 2 trade-record-current (item 3 trade-record-current))

- o* H: J. Z! K# \6 Jset trade-record-current/ B1 U! x* e; Y; }& f8 L
(replace-item 3 trade-record-current note)
4 T% T& I6 |$ w* V! [' I- V2 ]! F
& ~, _  @8 \6 D/ i$ `2 J

+ h1 [- B% Z2 i" ~# Gask customer [5 B3 x. G5 A2 y7 x4 }, ]
update-local-reputation
) m  q4 R8 J: \$ h5 D  z0 f4 Eset trade-record-current) V, _- A; s( B4 x$ g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 A7 O1 R9 z- a& g$ M3 i
]
3 n7 M% T% M& n7 c! p# j4 F6 ^; @

( [- V2 L9 K/ ~6 o4 [% U- wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 M  X8 k6 w5 E9 ?* l

3 B: ]6 N8 I' B$ ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- B3 J) I- K$ Z5 ~* C6 U8 X! }4 |
;;
将此次交易的记录加入到customertrade-record-all. ~* C: @; F& x: ]- a3 C. B
end3 E0 s* j2 l9 \+ l
8 U) [$ F) u  p, V2 e
to update-local-reputation
9 f. [4 v' A9 Y  E" k5 N/ a! kset [trade-record-one-len] of myself length [trade-record-one] of myself
0 _* Y' }" m* R0 H* H5 T2 G7 ^, v& _' r! `1 B
) c( |8 u" H/ a$ ^
;;if [trade-record-one-len] of myself > 3

; q8 ?$ A% R4 A0 L% t& R, Fupdate-neighbor-total9 S/ Y+ g8 K9 `# q
;;
更新邻居节点的数目,在此进行
: }- e+ A% ^3 C. tlet i 3
3 R8 D0 x. `+ L# K0 Hlet sum-time 0
' V4 {2 l8 Q  awhile[i < [trade-record-one-len] of myself]
/ L1 m9 Z8 F& x. L( R0 t[
+ r; i+ o* y9 r; a4 Q8 N0 rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 S# o- _" A. B# |# h0 K. Tset i
1 z0 g2 P% I5 N7 `. E( i + 1)
: x8 V" G8 X! P6 ]
]
* v* D' z9 @9 T5 x0 `5 v, llet j 3
0 g+ s+ R% D4 B. C0 U- Elet sum-money 0
, Q2 h  L. u. m) Iwhile[j < [trade-record-one-len] of myself]5 {* z. w. `9 g+ L% W' \
[
, j6 Q3 f. {. aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)$ n% m+ [% _* |( s7 G% r
set j3 f, N! I% C: P' U6 V, L) \' t6 H! F9 w
( j + 1)
4 G2 M! y8 S% t7 A2 Y6 F
]
$ k! J, e4 x( b& |* F7 llet k 37 R6 V2 L# L4 U" A' @: r: y8 C# }
let power 02 i: g% j! p- @- \: Q* i: q' [
let local 0" D  K% ?" i, h3 e% o# P
while [k <[trade-record-one-len] of myself]! U, |! q- C  V. S0 e
[
' W0 ]! O$ G+ l5 kset 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)
6 o& S6 U1 ?2 @. e+ ~2 mset k (k + 1)) i+ A) J+ a5 b
]
& h0 J8 H: W! u1 X5 B  p' Lset [local-reputation] of myself (local)
+ h# n$ }5 h5 _& mend
' G. h, y6 w, E
$ \2 J( L5 R: b" e" _to update-neighbor-total( _* o- U' z' M- a
2 U! }2 K2 L. l* T6 Z9 O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) Z* D- Q. E8 _9 z2 Q

: v" \7 l* w& \$ m
6 v3 |: i. a6 P& N( V; ^9 M( o* X$ {
end  N6 C& k% C# h# f
! J/ y7 H0 m9 V& v
to update-credibility-ijl
1 J- @' K6 v" [. j4 a% G
) d5 A5 G! l8 ^' g;;
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。  _7 ~0 `3 w! s' f0 P$ ^
let l 0
+ q; D. D: u+ c8 Fwhile[ l < people ]
3 C/ g# N+ x( j7 P# \;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
5 |- h/ ^! i3 Q* W8 r# K[
2 H6 z7 t' ^7 R0 s* A+ x; Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 g( f* ^$ i/ {, @' ~% D$ M! [  H
if (trade-record-one-j-l-len > 3)5 Y) d0 ]* v" c& k6 F0 B' R
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
; W$ V, {6 e4 ^* n" llet i 3, f% c6 A0 g/ K* w) G
let sum-time 0  s3 e$ |8 p; C" l+ R9 y
while[i < trade-record-one-len]
0 _. L" W+ n3 r4 b& E[
' b9 y7 S! k6 E# ~% Q9 \set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ T$ G( e7 _( X6 P; t
set i
- S7 i7 G1 ]4 P- T( i + 1)
( i- V1 c4 g. i( x% R- |' g$ d
]4 g7 C" _0 P5 b1 ]$ {
let credibility-i-j-l 0
: b9 p. t. Q% z& ~! f;;i
评价(jjl的评价)) z/ H8 }9 A( @
let j 3
5 D8 w8 o6 c8 n5 D4 {let k 4
. [, h( [% q& m# N- {while[j < trade-record-one-len]
  h( f- Z( I  n! `: P[6 f  P4 E% Y/ b' @( K! e/ b
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉5 {' r' n2 T( S+ [3 |$ E- |
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); H- n' i# p$ C' E4 B
set j/ G: S1 |! W% [$ Q5 c9 S0 O) c
( j + 1)
, s+ }; P/ Y% @- [! _: q3 f
]
0 `0 m( J  w6 S) nset [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 ))
; @  J: ?! `7 F# U7 A
7 ~* g) z; B  g" L  g3 \, K. j" f
5 r* u# l! x8 N5 T# B, I. F
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& z, S' N' c: U: |1 ^
;;
及时更新il的评价质量的评价9 h( s( ?( N) W4 P7 \! E
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" @# q2 h+ u2 m- d  j
set l (l + 1)
8 {) z9 n3 W, O1 V9 w]. q# O8 Y; H5 r
end$ t/ i' P! J4 H: L  z
/ l" S' j! p+ d! t2 I. }
to update-credibility-list
; j! N' C0 O, j8 L. Ilet i 0
5 X' i- P0 T+ @& R: \4 Q1 W* Jwhile[i < people]4 c* q$ E6 z; f8 ^' U1 V
[* M$ c" S7 E- M9 Y1 w9 S) N
let j 04 i7 M& K% `1 n, T
let note 0
$ ?4 e' C( i/ w' c& L6 p  c' z7 Alet k 0
$ ^: m( J. R% p! J7 @;;
计作出过评价的邻居节点的数目
1 z) B/ t* a0 Ewhile[j < people]
$ k( N) L/ h5 }; Q+ q' K[
" i: v( q  _8 y1 j( z3 S/ h/ Sif (item j( [credibility] of turtle (i + 1)) != -1)' I8 B$ C: Y3 |+ Z
;;
判断是否给本turtle的评价质量做出过评价的节点
: w& Q+ j1 ]6 p. u- _% b[set note (note + item j ([credibility]of turtle (i + 1)))8 Z- P: b3 j4 O% z
;;*(exp (-(people - 2)))/(people - 2))]
' C1 C5 G. L: }( A5 ~' r. L
set k (k + 1)
8 u( H  K! Q8 m. |9 G1 |], T% _" E3 K& B
set j (j + 1)
: a, b6 l" |; x0 x& ?# J0 m]2 Z8 y+ q4 m' n: S
set note (note *(exp (- (1 / k)))/ k)0 s5 R' G  W1 v) m0 m( h% Q2 ]
set credibility-list (replace-item i credibility-list note)4 n; M1 p' D# y8 Y/ [" \9 d
set i (i + 1)
0 w& m, g: g: w8 \' a% c0 h]: Y. h6 l5 c. B. |, G/ B5 v7 Z8 ~9 h
end
  I; B6 Q8 t. S7 M, U8 k& D
) O/ V: d( D( s6 Kto update-global-reputation-list  b/ g; p2 |! B' P4 ]
let j 0
( s# u- ^0 u) h& Awhile[j < people]& f- h' ~4 @! P' A6 G, X
[
3 s5 U4 l, j- v, _- S; S) Hlet new 0
" m; F" r" o" u; }% V$ s# V;;
暂存新的一个全局声誉
) K) e$ t8 h& q. rlet i 0
6 l3 L7 `9 g  M- t5 I/ flet sum-money 0$ z( W2 N5 @4 M
let credibility-money 01 t% P% t0 @6 r
while [i < people]
2 ~5 A! u) n8 B4 w[0 {9 Z& W/ W& T& o7 R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* _; I5 f- d* u  w' A
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 R. x# H/ ^$ d! v
set i (i + 1)
2 I# c% R8 c# k9 K]& t  V; W7 N) S3 O
let k 0) z% `- w  E; L' S% F+ M% v& z
let new1 0
' Z) ~" d# i1 N8 ?) kwhile [k < people]' k9 H' `: b5 Q+ Q% l
[
6 s3 X' C1 B% m; a, Fset 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)
1 A$ v5 N5 O! G) S- [4 R7 q4 @) Cset k (k + 1)
; C- P" v$ x9 ?6 h  g: L3 ?]5 S! G4 N" s+ d9 b  {
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! v8 s) q2 B+ e/ y, o8 }! a
set global-reputation-list (replace-item j global-reputation-list new)) B$ @& P7 W4 @" J
set j (j + 1)1 y( l0 a6 l% y6 I1 V8 A
]9 Y' G, u9 @0 Z) ~
end( r# a- X8 R- g' `* e; _3 P
0 f% b% l2 S) A0 ]3 f2 N1 _! {9 e5 j

7 E6 H. h8 s& w, K5 K
& a+ I9 _! H: v" G* xto get-color
4 A: z: R+ w; z. v1 o% P2 D7 O8 u  ]+ I: X
set color blue

+ f. ?4 ~0 R& G7 |! k0 Q) W; mend4 Q4 d/ M- x$ E

9 U1 s$ @$ o( J" Z! cto poll-class2 o4 p% j; u9 j, u
end
8 P+ o4 C( n, d6 S- V- M3 }4 l2 [/ j$ Y  \) p2 v' U; x+ H9 m3 P
to setup-plot1. J4 J/ [/ r7 X$ V

1 d" G8 q8 o, {set-current-plot "Trends-of-Local-reputation"
0 C- h! R+ J1 Y8 c7 _
1 ?6 n- Y$ d& {$ c
set-plot-x-range 0 xmax
, f9 T( p7 g' n4 b6 A# i4 ^3 [
8 F  z$ v9 b' g& B; v
set-plot-y-range 0.0 ymax
6 G+ y! C  g7 o8 ?
end/ f0 ]/ O& l# r0 w

3 D: x4 v% l7 M7 Ito setup-plot2
+ @/ s/ p. B; w) Q
" F/ d0 b' n" Y% y. zset-current-plot "Trends-of-global-reputation"
& T" o1 h4 s. W" i* s  T3 P$ Y6 F: E
! R2 X0 ?  m2 b. P
set-plot-x-range 0 xmax
% T9 U6 y- W: n. f, _2 I& P! K
7 p1 F" c( {6 |; L
set-plot-y-range 0.0 ymax
7 _: c3 W. m. ]9 j. \
end
3 A, U! S1 L" V( J/ b
5 j0 y# x  A% jto setup-plot37 _$ _( ?- |7 I' o# v
- |3 k. X- M' Q
set-current-plot "Trends-of-credibility"
% w& }9 G8 [; ]5 V  S

. E' ]) E7 ]' A* q* t' [  h4 L$ lset-plot-x-range 0 xmax
- ~6 R/ [0 A& F2 E: t4 A" L4 G
- H  k# L/ W& l8 v
set-plot-y-range 0.0 ymax

6 W1 G) V( ~1 J: o1 o% O$ Tend
- p# f" }" W: J( u: u+ C
6 b* ^; e& d: ^to do-plots  }# @$ L4 _) B6 g4 J" ~2 c
set-current-plot "Trends-of-Local-reputation"  Y( n" R8 z, B3 a3 A/ V; {5 w
set-current-plot-pen "Honest service"
- Z- \5 U6 Y" e: o# B! T* T' p0 `end
; _+ b$ k$ w, K$ j6 A) w
9 ]# O& X; f9 w0 g7 r% [' K) s[ 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$ f( P* V2 X( q% m+ F# a+ y
) G+ s  c% j" K, `
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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