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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:/ D% @1 v( _* @( C0 n, t
to do-business $ s: Z* z* n0 p
rt random 360
/ B  X3 m- A0 ?7 m( c! g fd 10 w) Y. Z( f6 [2 X( P$ b( O% Z
ifelse(other turtles-here != nobody)[, a+ a5 p: n$ q$ H/ P+ Y
   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.! |& K; Q' F) I7 z" X$ m  }: R. T- ~
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: Z8 f5 x% u* b& u- C* ^9 I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 d" g% Y( @* W" J% v# u1 B1 K- G
   set [trade-record-one-len] of self length [trade-record-one] of self
7 |- Z5 |: T3 ]  F% D) Z: C   set trade-record-current( list (timer) (random money-upper-limit))
: M2 ?% |( z; N9 L+ l2 O3 y; a0 F' h, p5 G7 Z* ~
问题的提示如下:& G1 Y* p# }: y

- ]5 ~- D$ c4 b5 uerror while turtle 50 running OF in procedure DO-BUSINESS! q# e' H" S# A$ ^5 J  }. m/ C
  called by procedure GO
& J: h3 I( P+ Y) WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 |% D# r. T5 M' A& i5 o, @
(halted running of go)* g' v/ j& W7 C4 ?/ {4 K, s

6 q/ G8 B" m% V; S0 H; }4 s" |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~~
0 ?9 I/ J2 {5 _, v  }% b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& {7 R" T4 i! B% t4 @4 n* n. \! E) x
globals[* }. e7 C( o7 ^) f" [: ?3 w' p
xmax
, Y/ C* a- ^; A/ \3 \8 }ymax) h3 [' J7 p7 N" B  D
global-reputation-list
% j5 S. K: {7 C, V' B+ F1 T* T  P3 E
1 x- Z; G& u2 n8 L1 t;;
每一个turtle的全局声誉都存在此LIST
4 ?" n2 C' W+ m, L; rcredibility-list/ D1 ?1 D) O, Z0 z0 G& q
;;
每一个turtle的评价可信度' U4 ?. E7 e3 M: e
honest-service# E7 F9 A$ P# m; u
unhonest-service
' V3 R2 e) K5 Woscillation
9 ~# ^0 L- Q# {) c: s/ P4 Srand-dynamic& f' S2 `  @( Q7 G
]
! N  ~2 |7 P* I& ?" i( J9 f2 o/ T3 l. A& D' n" @
turtles-own[
: m3 p( @; i# M: Q$ a3 ptrade-record-all
5 J; y5 U4 Y' U; m2 h;;a list of lists,
trade-record-one组成, B6 T0 J1 R6 d  [) m! s
trade-record-one; D( l5 p" T0 ^, S
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ ]! d; p' P+ U  p, H
; k# z( X, j3 B) [' r' u: x;;[
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]]
; O# r; w+ B; l" c) atrade-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]4 @4 I% r' F: r; }. E
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
/ V/ i, `4 x' i2 {- i& Q% ]$ D8 wneighbor-total+ P" A9 o% w: P: m% E0 y# F
;;
记录该turtle的邻居节点的数目
; w: p* e# P8 Z& f/ H, |, Q& qtrade-time# J- v" t% i7 i5 `! X) r3 w! c% q
;;
当前发生交易的turtle的交易时间
5 g" y' X* n$ s, fappraise-give) O8 q: N0 W# |6 E0 l: Q) Q) x$ N
;;
当前发生交易时给出的评价
8 ?2 O9 K% T+ U, w7 Wappraise-receive
1 ]& k: s+ |( w1 q$ L; C2 F8 o;;
当前发生交易时收到的评价
" {$ e6 H, N- C; E& D5 |, happraise-time
, ^7 ^3 S. w6 o4 N;;
当前发生交易时的评价时间
, v  v, x% \% [" ^local-reputation-now;;此次交易后相对于对方turtle的局部声誉. G) h. k( F0 m( a/ d
trade-times-total1 t' i9 K9 L4 _9 Q4 T
;;
与当前turtle的交易总次数
$ K; [- N( O7 r6 t7 h5 D6 V: qtrade-money-total
1 }1 |8 O% ]5 a& ?3 ?" f1 N;;
与当前turtle的交易总金额
) ]7 L# K4 u* v. D. J- o$ S7 Dlocal-reputation
- Z3 q) T& g6 ~- Qglobal-reputation3 v5 i7 T8 f$ h$ \, I
credibility
4 s- I$ m; @' J3 h$ W" K2 A6 ~8 V' K;;
评价可信度,每次交易后都需要更新. {3 D$ m/ S  O2 G/ j
credibility-all
! m7 ^1 f  X& t, @. t& P* [;;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* m6 b1 w2 V3 ~" b3 C( |
* H; ]# S( {' H; g4 ?$ s: 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
/ V5 s3 x1 s( n- |" Xcredibility-one
4 O' P0 a- R7 \% E7 ];;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
) L" [# R6 z& C/ Nglobal-proportion* C  D* k/ d4 Q3 g, k
customer/ ?1 A) j! A# z+ Y3 {' F" [
customer-no
' v* H  N- ]0 p! |1 Mtrust-ok
2 w9 _! |8 J+ x- C# F, Htrade-record-one-len;;trade-record-one的长度
, [6 `* \6 j8 e$ S/ M+ V]
; _! M' c; c5 u" P* f( M6 N- t7 F5 o  q, b+ }5 j9 B
;;setup procedure2 a! }* d3 |6 @7 P& k1 s9 ]% T

  [; E" v3 p6 I3 vto setup
  j* O% b: x) r6 P+ K$ H: E- f* m3 g
ca

  M8 t' k' @8 q6 ~2 {7 e9 a
6 i" `7 O: w; H$ Minitialize-settings
, ^1 G$ @* I( \. Y+ w" q
$ G1 u; j* p7 n
crt people [setup-turtles]

& I7 }, D( R4 r* U( U
  b" c7 i; `+ greset-timer

! M, q% X. X) ^; X9 N# g  s* r* D2 |
poll-class
: \) }! }* j. V* d/ i7 k) N
- n8 n5 y" P: t" u, }. }# c; D
setup-plots
7 u, U6 t5 u% `% y0 G4 `4 M
5 O+ x0 u$ Q8 q; y
do-plots

2 ~4 e7 }  ^4 c) `9 \' o( qend0 O* D( |: d5 H: @

9 x) }% h; Z) Y( {/ r" I: Jto initialize-settings
/ j! i6 i6 |, v- [1 g8 x2 D) L" C9 x* T
set global-reputation-list []
5 ]' c% D2 ^1 E% P) A
$ T* a8 g: O. T) L- C( J
set credibility-list n-values people [0.5]
$ T+ ~) J2 ]) X: \9 i+ e
0 R+ ~! B* Z" e- l" _' J
set honest-service 0
  M: g  X, z) Q, a- m% D6 F
/ e7 ?2 N6 C% o' k6 o  Y" m
set unhonest-service 0
, \6 d0 z1 ^# Q: y1 I+ u! _
: P5 Z8 O7 |- y2 g- \
set oscillation 0
9 v6 s& ?) W7 _" X
4 ?0 d0 e. l3 x7 L9 N
set rand-dynamic 0
# m5 n9 w+ k' b
end
, B: Z- B% M" p3 h! @- F* [
0 T4 A8 W+ d" ^, L$ oto setup-turtles
3 ~: a; {6 G+ r5 H1 b% B- t" uset shape "person"5 J" ^0 H* K6 T& g; A3 Q
setxy random-xcor random-ycor
2 I: v/ t& H5 ^# n% Wset trade-record-one []
7 Q) K8 M( g) ~, v) i  U
, U/ |- T4 V, s  s6 k0 x
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 J7 R  m9 ~2 R0 \5 C8 Z/ C7 T8 w

; ^# f+ Z  ~% h0 E# T: g; iset trade-record-current []
1 y- L  v9 F' ]7 D% P2 p$ n: i: iset credibility-receive []
; ]0 d2 }7 w4 ~$ e2 Wset local-reputation 0.52 i7 g. d6 f% n/ Y! Q4 R9 b5 [
set neighbor-total 0
* o7 F* }, p1 I: eset trade-times-total 0
; a; S  n. @7 s" T9 i! s) }1 gset trade-money-total 0
1 |$ K/ B  ?* `set customer nobody
; D, v- H. j; c& w* dset credibility-all n-values people [creat-credibility]
) U4 I4 _% N* I- t8 L6 N' y1 Vset credibility n-values people [-1]& X3 U4 l6 }  V
get-color
: Z8 I/ I/ F- L" _- T

6 x# u. X' w. ~8 o0 e7 N. lend
/ ?2 ^; [2 D% x/ K- U0 ~3 ~1 C$ P( o* Z" @" f1 U- @
to-report creat-credibility
4 s. o4 |/ p. R0 Breport n-values people [0.5]
7 F% C- U3 N1 w9 y" V" send. C5 [( f/ X: Z$ J7 K" N' k  w

: h$ T$ E1 }9 x! N5 K) S1 Fto setup-plots# M. y7 D0 z7 p) j* n4 {- x; q
& d0 O) g5 g1 u1 S6 a% D  g2 I
set xmax 30

1 d( m2 y9 U/ R& ]" O7 H
/ n/ Z: K8 i$ r1 w, C$ `# ^set ymax 1.0
2 _, ?1 z) G* Z! |' s" L

  x, o: ]- h/ a) j, H( m9 h1 \( j  @  Xclear-all-plots
; y6 {: f- y! Q( |
, J8 w( a/ }& Z/ a2 [, U
setup-plot1

+ P9 r( o3 n( R- e4 b
6 Y$ n; o8 L: n6 h" jsetup-plot2

: ~4 T# m, M& m( A) S: m3 E; Q  ]4 H% {; f9 K8 Y
setup-plot3

# D$ V; P. N8 w6 T) h" a  cend
8 s4 m( b. m: G
3 N. q. S$ r9 a+ ^6 l0 R;;run time procedures
# ~* q8 I8 U& z  ?# M  s( z
- B! b4 `6 q& h0 ^" sto go
& }  I4 e$ _' |/ I* C; c+ }- A# b  P2 |. p! X" v- p+ t
ask turtles [do-business]
" ^& l$ m( ~3 U' d
end
0 l' G! R- \3 E( g
' d* _* m- O9 G' }, @: V4 Qto do-business 6 H/ L7 N" Q$ A

: T- s, \1 v  f# m2 f5 o1 t6 Y. ~' u4 C$ ?
rt random 360

  {# p) {; H+ X. K1 F
7 p' \6 \) V8 r6 U, j& `fd 1
  R/ R% |) I. \' F. o/ W$ b1 D6 W
9 u- `. F# Q2 Z) `+ g
ifelse(other turtles-here != nobody)[
4 W* \4 I; ^/ O0 a5 p
9 x- v) S! N0 P/ G3 z
set customer one-of other turtles-here
2 `* h6 B& @, g7 ^
' \- K. i% p4 ^4 E0 Y
;; set [customer] of customer myself

8 D7 s+ a9 k( c( |$ G& f0 G5 ~1 |! m& q9 h# L4 A
set [trade-record-one] of self item (([who] of customer) - 1)
- [5 i% K/ T$ Z* s' o8 v[trade-record-all]of self
/ J! V% p! }2 z+ b' m; n" t) X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) F) |9 M* `0 c% p& H: I5 z" u  o. y; E+ s
set [trade-record-one] of customer item (([who] of self) - 1), a* O( L) B2 p6 o- G
[trade-record-all]of customer
7 I0 z+ z0 Q) K0 _3 S

( V  |# @7 ^! h/ b6 }set [trade-record-one-len] of self length [trade-record-one] of self
/ a1 v3 t, {, {4 ^3 g  ~
& T6 L4 ~4 r4 D. `
set trade-record-current( list (timer) (random money-upper-limit))

0 i: W: h' ~! b3 y5 N, s  P! W- J: ^  M) G6 c* o! r& X8 ?! Z
ask self [do-trust]
- `1 `( c) f8 G1 j;;
先求ij的信任度4 C) n2 A; e! p
7 N' h7 u# k7 V! j* D+ J9 H
if ([trust-ok] of self)( ?& j* J$ K0 ?
;;
根据ij的信任度来决定是否与j进行交易[
2 g7 F3 g) M+ I8 }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 c+ n  P& V3 k% ]+ U
" j1 M# t& K- q& S! m[
8 f0 Y0 `6 A* e6 Y# V

* w9 Y7 V( P2 y$ ?7 Hdo-trade
# L4 b! K) x6 @" c

: q4 a9 z# i4 ^update-credibility-ijl
! K" G) ]3 r9 i1 Z+ F5 T

4 m, |% n) W+ j- hupdate-credibility-list
- |) ^8 `% C- n  v4 B

& j9 s, B5 z: r- N, @2 ~1 y8 h! g5 d& B# E1 _: q
update-global-reputation-list
- I) ^0 P4 r- t- Q+ S* U
: \' ]( Z& n$ G9 E
poll-class

) B5 f8 X2 l2 q- F$ F4 @9 c3 E6 ~$ g$ Y" {9 m0 T
get-color

3 }2 ^4 m" H' X& D, b. |1 i" ^6 {: F* \$ ^  e, @2 \3 B5 Q6 w
]]3 Q  S8 g% ^, u0 T2 V5 O$ P' J

2 K, q+ R. x' ?6 x2 _, \3 ?, l;;
如果所得的信任度满足条件,则进行交易
8 t0 m, b4 i/ X, s5 D1 j3 i
! u1 }) p" |# L5 p& a5 ~% [[
1 u  P3 u0 L+ ^* v7 t- r: W& @
" q  G% K1 O) y" u8 ~* }$ p
rt random 360
% m% p) P/ u* _, q8 a3 Z

) `: t* w( a( M7 Zfd 1
& `! H5 v9 H# j. s
; q& D* Q! z- i: G
]
! {" p' o2 B, `7 A- P9 X
5 E2 i- l1 @! ]' Q7 X4 f
end

8 j4 Z- Q: @) ]9 b9 B$ h
# O- n/ U1 S3 x- \( Tto do-trust % A% n+ m* \0 y! @, F& p& v
set trust-ok False
1 \+ ~3 n: ?( Q$ {& I1 H3 {5 f  y3 d2 n# n0 ^

  B  r* S, P9 g6 v5 ^4 Llet max-trade-times 0
9 \+ f- U. `6 `6 Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]  k* x: u0 `# H$ x
let max-trade-money 00 c0 t" `8 b. G1 ]( B$ C) v; r0 J' q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( T' W/ R& `; R# I) e7 u& l
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 Z: |3 F* p) f+ o% x" z6 V2 K7 I9 e% g
% j8 G6 [! e5 c
get-global-proportion
; F2 }) K/ G' W) v0 h: W! I/ r$ Llet trust-value2 O  i3 K. i' \' J1 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)
9 B% T, B- m" Y( G% w0 S
if(trust-value > trade-trust-value)1 q- @4 r/ S( w. U
[set trust-ok true]
: e. c* W5 W; H) n2 Vend
; s, |8 K7 ~6 {* b3 }  T, z
& R, h8 y+ W: Dto get-global-proportion" `3 o4 e5 l0 N* _8 J# m
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 q( I' C0 X" @! s
[set global-proportion 0]
: |: k( I! h, ?[let i 0
# T( N$ t+ w4 p1 F% ]/ ~let sum-money 0
/ P5 D+ T  Q) G& ^, X. I3 ~while[ i < people]
2 o  E0 x/ w  N! Z& g1 s% I  d[$ N0 j$ m; q+ t1 r/ S. e( r
if( length (item i) W/ O9 d+ P+ ?7 \, H% \9 [5 Z2 y- c
[trade-record-all] of customer) > 3 )

' @: Q  Z+ |8 N6 l- O6 h[9 O2 ~( G3 K6 E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: t6 E7 f6 g+ Z! M( H]/ ^# O. w0 m# ?
]
9 n( }/ `( D6 y/ x0 r' ?! dlet j 0
5 S* }# p) S8 M9 ?" E  Z' Blet note 0+ D; M0 n# ~0 |! @3 K0 \/ n
while[ j < people]
& U. {3 Y- \; g8 M/ M* m. T" r[
: w* T8 W$ o/ G% T+ T; Iif( length (item i/ f7 a- J; i7 l) G3 K
[trade-record-all] of customer) > 3 )

& l% a- I: k0 O4 a3 J1 X" K[
$ t: a, W; R# W$ J$ ?' Q: Wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 A  A9 h$ c1 \& T  @$ P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 r( u# I4 A/ R" p
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 I# ~8 R4 V  N5 R7 U/ P0 O]" k. C! @, s$ j9 F4 M  v
]
0 _$ q+ G# G: ?4 V  P: Yset global-proportion note
: C, t: ~' @7 h6 S: \' f]
* z6 _) B9 q; v9 _/ Fend( ?8 t9 m6 \/ Z: b1 E0 v3 M/ m
- z; \# t( j/ u: ]  ~, s
to do-trade
6 n4 \* A* v1 \5 v;;
这个过程实际上是给双方作出评价的过程. K$ f" R$ w  b& R6 T2 E) d$ ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
' |" B3 P2 ^8 Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 W  }4 O! h* T. d  hset trade-record-current lput(timer) trade-record-current
; \0 t  O  T0 I' T+ r, ]1 ^' i;;
评价时间
. a& J0 F5 F: g7 aask myself [
- _; h: x. y( \. Gupdate-local-reputation
* ~7 B2 c: ?3 @: F4 y6 kset trade-record-current lput([local-reputation] of myself) trade-record-current- _! f  @- v- c
]
' @# J9 F' o3 Y. nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 d: A0 _+ B8 w3 F;;
将此次交易的记录加入到trade-record-one! I. M' `2 f& N5 n% y0 n- D& w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- j  E+ s! {9 K$ A7 g- o% H: m; A  y
let note (item 2 trade-record-current )
; }) }, K* d) s3 U9 Eset trade-record-current
  m. J8 H1 E4 h9 z7 r(replace-item 2 trade-record-current (item 3 trade-record-current))
0 y! l7 O8 G" B
set trade-record-current
6 E/ l1 l) x- ~% Y( f(replace-item 3 trade-record-current note)6 T" w% z* T/ o! ~' I
# ~5 k( L9 ^2 U
  V$ }5 o- I! N2 F6 R$ |
ask customer [
* g. q- ?: u% {% Iupdate-local-reputation
, A7 y4 }& P' aset trade-record-current
" \) ?- C! s2 J) X4 c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  p5 G- g6 M/ K/ g
]& m( h" i: v$ h1 `) @# o

4 V2 q7 ?5 _! }/ E: c

/ j9 N6 v/ C3 \2 ^7 e/ bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, x5 @8 o3 o. a

, N. H6 X* I% I: ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ Y5 N* x0 Z; c8 u/ @5 Y4 k
;;
将此次交易的记录加入到customertrade-record-all
) \$ V2 Z5 ~' F0 Z: _end8 M+ o4 c9 b5 F" @+ J& R

5 |6 K: a  P+ h: H( ]- zto update-local-reputation; g$ R+ K: e# V- j
set [trade-record-one-len] of myself length [trade-record-one] of myself
7 M* j0 C" i  q$ [6 q/ ?' O* E* C; e  y$ u
: a6 D5 Z2 U& n5 b+ S
;;if [trade-record-one-len] of myself > 3

' W4 `0 H/ {/ ]% `1 Yupdate-neighbor-total
2 [0 B/ E! ]" t+ e" Y* ]* W0 ?;;
更新邻居节点的数目,在此进行
$ P) p+ b4 j; G* q( olet i 3
4 n  e/ y  p0 m# \, S- |let sum-time 0
# h0 _: |' u% @1 l. C% rwhile[i < [trade-record-one-len] of myself]
% F; g9 O5 ]2 W  ?; G[
" S2 C- [' V. z. yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), W1 U. p- t5 U4 u: x7 c
set i
+ [$ [+ ~$ q8 B- E' }% r" `( i + 1)

: s& W5 h  W0 E- K]
% E/ n6 j2 V( v$ ?% R5 Plet j 39 R+ C3 n4 s; K$ T* O, l3 G/ H* N
let sum-money 0
0 z" D, P  ^& ^8 nwhile[j < [trade-record-one-len] of myself]5 G* \1 {+ \9 _0 H. l$ ~3 O
[
7 H: \4 m, H; L  x1 i" Y) Fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
8 O  z! Q. b( L5 pset j
) Q0 w  K. Y& Z* x( j + 1)
* z; G1 T& B( t/ x4 t# R7 L# y
]
& N6 N$ ^- L% \' Qlet k 3' B  g& a4 e8 o- ]7 n) F2 O
let power 0( c6 F5 @1 E* V8 y) i' v& C0 L
let local 06 P/ y* w& |5 g2 ~, T
while [k <[trade-record-one-len] of myself]$ D/ o; s# \! w  z) T' F6 R
[
' L3 l9 H: u% g& D9 _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)
! Y+ C9 O8 [8 S: p/ B% U* bset k (k + 1)( W- m* P9 F5 h) `; t
]
4 k2 N. s+ Q. ^+ hset [local-reputation] of myself (local)
& w0 `; K8 N2 G8 A, rend
0 O4 y+ C1 V" ^7 W* v
; m# b& Q: |* N; k) D; \5 B; kto update-neighbor-total
6 Z; h# g$ j* b9 L. `) P' C9 U- z1 N4 T, G
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ a1 L4 m/ N, v7 e) K* V+ [1 l' x
# I, c1 q% N+ S, ^6 n- c: R" e
5 T7 i0 z# d4 D* Z' g: [! v5 x
end
: t7 t+ r7 a5 v3 g4 E: f
" U  ?) {( B3 D% N* [: Q2 oto update-credibility-ijl 1 I- I6 y% W! O/ K3 e- |& W. T

9 b0 l. e( n. ~;;
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。8 N% K! Q7 a/ H; c
let l 0$ \. u3 ~* @' `. K
while[ l < people ]
( h/ ~% L0 j, ]) m& d7 E) ^;;
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2 ^( X2 j7 v5 a, K, W3 k
[; b& u+ L) _+ }6 w8 q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- H) ^8 H: L0 I" p+ W; R
if (trade-record-one-j-l-len > 3)! B5 P" Z9 P! Z0 g- p$ [
[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
: y7 j* E, i$ J2 t" O; olet i 3, X# n" W7 S, Y3 ?9 s* V
let sum-time 01 r' i; u# E. q1 T: t
while[i < trade-record-one-len]' h& L6 X! v* P0 m9 H9 X" {$ V! p
[
$ _  d4 v- V4 ^6 Z7 i0 Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 M$ H- I: C4 J4 h4 q. U
set i
) _/ `' H3 |+ }' i( i + 1)

7 ?4 L, u" g7 A: h5 a]0 d( w4 M9 m! s0 q; h" G- \: m
let credibility-i-j-l 06 A! V1 }, I2 J6 z
;;i
评价(jjl的评价); }3 Q9 n: O& {( v# I4 {
let j 3
2 _9 R; J9 w! `$ x: ?let k 4
2 S7 a3 n: z( S( `7 [3 Gwhile[j < trade-record-one-len]: \5 G$ l! [# z8 E' a  ]
[6 f' h, _" f. ?' m' H& ?+ R
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
) d( V* X0 }7 z0 ^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)
9 \+ k0 i' Y& Aset j* C" j0 z/ U( Q  m
( j + 1)

  ~6 q- c0 A3 F, J5 o]: k7 y& E# \4 p* {$ a
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 )); v" N5 A$ F9 z! {, r3 o0 [. D+ p
$ A# @! H) S$ f# Q/ ~& E

+ @' L( ?" l( y: N, Z% Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- s. ~% M" d2 W+ o7 U1 T8 b4 k
;;
及时更新il的评价质量的评价
9 S# z7 u* z& [7 B# B9 kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ z/ M& k- S! n' M8 v) tset l (l + 1)$ Y4 C1 o) k4 }( s* A
]6 @4 ~2 O0 V4 U1 b: j4 T
end$ T. j7 ]4 Q, b! c3 ~8 _3 ~

5 q2 k9 P) o% {  y5 tto update-credibility-list6 J, K! q: r+ ?, h  ]
let i 0
; L8 s, E; t& {2 J" q# e) l7 _while[i < people]3 s4 n4 A- L8 [* j3 Q
[" }6 s- s6 e' {
let j 0
3 A3 i0 v3 U& g0 p8 Klet note 0
3 I2 ]% n" ]( m, |+ G, A% V1 {' |let k 0: |6 d/ P2 n8 V9 S' c
;;
计作出过评价的邻居节点的数目
" a1 }+ Z. q% zwhile[j < people]
! S9 B7 `8 [0 p2 x[; d" C2 c( V7 L% N5 V3 [2 f
if (item j( [credibility] of turtle (i + 1)) != -1)
9 v: A( ?3 v/ b0 d$ };;
判断是否给本turtle的评价质量做出过评价的节点
$ D' Z* o2 v, g2 Z" o) V& h[set note (note + item j ([credibility]of turtle (i + 1)))
5 }/ y3 |9 F% \% ?% L;;*(exp (-(people - 2)))/(people - 2))]
( R5 a9 w3 H' l1 A3 {
set k (k + 1)
2 L; ~; Q. b( Q1 u: U]
5 P* k; C2 H: B3 ?& G$ ~1 c* ~set j (j + 1)9 h5 a$ Z) ?: z( o3 J6 \
]
: l( d7 t* @: Uset note (note *(exp (- (1 / k)))/ k)! @3 l& g) B6 A' x
set credibility-list (replace-item i credibility-list note)
" e9 Y: v7 t3 t1 X# yset i (i + 1)- k* V* k& ?5 M/ p( l* S
]
  E# j3 @7 N# u' I' A. a2 mend) i  U1 t8 M) c7 u; v8 v; M

& e: E6 |& L, M1 y* fto update-global-reputation-list) E( n$ _( R  @, z7 ]" u# S  T* ^
let j 0
0 X6 P  |7 X- i) V/ fwhile[j < people]
' Q( \0 n% f4 j% I/ s3 d[
: D' j2 V! r3 C, A2 q* blet new 0
# C" t* P2 m$ d& L2 O5 R% S/ t;;
暂存新的一个全局声誉
& V9 E: a- R2 E9 @: y) xlet i 01 T; e6 W9 Z' q7 M3 v3 \
let sum-money 0
1 ]' o- C8 i4 X& \: jlet credibility-money 0, A% t2 _' X9 Y8 U, R7 K
while [i < people]9 `& V( L- r+ x7 j/ V
[# o% J2 s0 P0 i0 L/ ~
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ z7 l. ^1 a3 r( _* o" ~4 e
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 P$ d6 [. T9 v) \) j) F0 Kset i (i + 1)
1 \. u' T2 |) [- C4 L+ g]
' f0 \$ a! F5 W) V" mlet k 0
0 P) z! X) F7 @! glet new1 0$ J! \, z# v0 x. i& l
while [k < people]
5 K0 j* e" i7 f* s1 M; ]; _. u[0 B2 f. U# x2 R( t: E1 b8 s
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)2 E* L$ v& t" u) `% X  L
set k (k + 1), y2 q0 H; h# ?% q' `' k6 g
]5 `* P, ?; R0 A& A/ R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 u1 i- z( N( Jset global-reputation-list (replace-item j global-reputation-list new)
) F$ A6 I0 F, @( c6 `1 i  |set j (j + 1)% x+ Q  W' `; r
]1 A$ x6 s. t% n* V* Z' ]
end- A( u0 ^/ c& y7 x9 }

1 U, l1 b! n$ k7 Q8 U  @6 v) f* n& m* N

* G, r; `; e4 G5 o( P( T0 F$ fto get-color
7 B1 A; D% @9 ^9 r& X$ N$ r1 p. v0 {! ^6 u
set color blue

7 I8 g+ f6 f$ B( u( y" `, }end
) W$ R& j  a$ R" F& H3 B0 J/ e: Y# l) I3 N. F# N0 Z
to poll-class6 V0 l3 z* b: B- X. _1 R9 S# R
end
' _; n* q5 S% P3 Q0 D9 p
; Z6 r# l* p; }/ M5 Z0 |+ mto setup-plot1
0 {/ u3 o& ]) l
) o# p2 X4 R: h! Z# T( \set-current-plot "Trends-of-Local-reputation"
. Y! w  }4 J0 \
: [  H* T8 f5 @: n6 M4 v- m% \
set-plot-x-range 0 xmax

; j8 ]5 u  L7 K* ~: Q
9 m* Q9 P3 @3 J) @) Nset-plot-y-range 0.0 ymax

  a4 c4 _2 g9 v* [# }: |- wend
/ s0 C1 H3 G# u' I; w8 x1 m7 J
7 a3 F  j- g! `& h5 J  n! ]to setup-plot2
8 p" E1 R1 `: Y$ B: Q9 _" c, a& K5 [, N4 p/ H6 g
set-current-plot "Trends-of-global-reputation"
, {/ I  ]: D1 M# i* R' J! P0 _
- w- `' b. N! O# R: Y* D1 _0 h
set-plot-x-range 0 xmax

$ G- d+ b% I9 E* F$ @" v+ c
+ J& f$ n. s5 ?: Yset-plot-y-range 0.0 ymax

1 n6 d- V7 X4 [5 @1 ~6 n! {/ uend
, }% y$ E; Z% B  @
1 V) ~9 ]5 U9 d/ vto setup-plot3
% {% m/ c9 U4 P6 @( D4 M/ }
- a# m( [2 f2 B. [set-current-plot "Trends-of-credibility"

# ~( D( h/ Q4 }0 C3 N
0 o+ b7 h6 T+ Wset-plot-x-range 0 xmax

! R3 S7 `) U: ~4 _  y/ p  S  E$ _5 k; B7 u" @
set-plot-y-range 0.0 ymax

% c! B3 ~$ }. }- p) E" E# \end
# n. d, z' c3 l0 A6 U0 {5 P8 G3 h- b8 L) h) p% y0 ]$ e" @
to do-plots9 o3 h$ K4 M0 g! P
set-current-plot "Trends-of-Local-reputation"* v; m1 L9 [8 n+ f$ V3 g
set-current-plot-pen "Honest service"# |+ X3 F" g! `1 b% o8 G
end
& c( _0 y+ z2 X3 d, |. M7 ~6 I% z& i$ X9 Y( D
[ 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.
5 W% d- @! w4 N# T' ^
$ P( ~+ s* S0 l5 w. A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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