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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:
1 l) K4 P9 N  l: t  ^to do-business * \6 G0 p: j5 F6 [' r
rt random 3602 u# A, J1 x( a1 z
fd 1
* ^/ R/ L/ u+ I7 s* n ifelse(other turtles-here != nobody)[
, l; u3 Z5 U% A   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.
/ q' n- G5 g) l/ o5 p6 Q1 P5 O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 ~0 y6 a* {. H2 H2 C9 `6 t  y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: G* s) I1 p) J8 f3 R" s   set [trade-record-one-len] of self length [trade-record-one] of self
: ~+ V0 a, B7 ~5 l  L   set trade-record-current( list (timer) (random money-upper-limit))* H4 H, _0 O8 [7 d* a  V; @
8 ]% @# s6 Z  l2 w; C
问题的提示如下:
$ U4 W3 u3 R2 O- G
/ W/ K  i; l, O( ]" ]5 ~7 Oerror while turtle 50 running OF in procedure DO-BUSINESS
0 [" C* S2 B- z  called by procedure GO
: W0 |" D  `, i  o9 TOF expected input to be a turtle agentset or turtle but got NOBODY instead.
" q; H$ ~6 d0 O3 Y7 b3 x' E* T- ~
(halted running of go)
. `6 r" ~6 i# ], W7 u" W3 ]/ {; 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~~
* H! V8 f5 H2 W; r! 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
8 |  x; t6 H" H7 a. d6 O, cglobals[7 w* ?- Q# ]8 y+ C* B- {% B
xmax
, D0 |; J" ?  ]8 h0 K3 P" S% Hymax
5 a) {2 E( N* m9 x& ~, ]  S6 Mglobal-reputation-list" ?- [0 j# F* q# v$ L+ t9 m8 D

: s2 v/ S! w; e4 I7 b;;
每一个turtle的全局声誉都存在此LIST' t; L9 K8 m4 C) {: X) g7 M
credibility-list2 ~( [. Y$ C* O5 A7 F2 U! i/ k
;;
每一个turtle的评价可信度3 i( S0 A% a6 F7 i; M
honest-service- j" j1 ~/ ?! j0 S# J& J+ Q" i
unhonest-service/ l. `* c; s8 u# `: Q1 [* N
oscillation
+ f# K5 B5 o( X: frand-dynamic; c! Y7 z8 ]8 W9 R
]8 Q4 P8 T7 j; W: I2 Y5 T) d  A
: U) H/ q3 R/ S& |: P
turtles-own[
8 H: @; ^3 j+ m5 M4 ^6 Ktrade-record-all
+ t5 q$ B, |* d: X# w;;a list of lists,
trade-record-one组成
8 a2 n4 R$ Q1 |trade-record-one1 |- F8 Y/ l4 y3 E) q) `* P
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; V$ X7 a) @7 r, W7 P6 ]
! W+ J, |0 N5 d: H* l0 Q6 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]]; f! S' D/ Y5 r; F( I
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]3 e1 r, [2 t5 y% W7 h1 M9 U
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list" p; e& ~  i! o) d' F
neighbor-total$ c. t5 g; r' o) ~- W
;;
记录该turtle的邻居节点的数目+ W" c8 B3 G5 g; T6 Y
trade-time
$ j* L$ `6 u6 C;;
当前发生交易的turtle的交易时间
1 E4 o5 k8 p( o+ iappraise-give- H( f+ {, V  Y7 D
;;
当前发生交易时给出的评价
  X+ B8 }9 |/ |9 Nappraise-receive
0 ~$ K& W7 a: y: S+ @5 D2 A. p2 Z* D;;
当前发生交易时收到的评价/ Y# W4 @# z; L5 A9 f+ J
appraise-time
% y8 W8 `" j2 h( M0 P4 ^; X;;
当前发生交易时的评价时间& L. q; S* w$ e% s/ g
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( ~: G4 y# [- qtrade-times-total
$ @; _" L, G2 K; _; T% X; {;;
与当前turtle的交易总次数
7 Y6 q# C" X3 t! C$ C! a* N5 Itrade-money-total
  ?2 d, N: S0 L  x;;
与当前turtle的交易总金额9 d. U* I! p; S
local-reputation! C$ O) b8 o) W. j/ r6 r7 x4 ]
global-reputation* F! I; L) E9 x5 W6 x9 _4 t
credibility
$ L# P: v  O% V2 S( d;;
评价可信度,每次交易后都需要更新
* L% v4 h  A) O! ~credibility-all
: R; e% S. i/ p* o;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据- s! @8 Z8 C/ t# j( j& l& w

( k: w" K3 v, N% E;;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
' m# T( G1 A3 r, q! qcredibility-one
; r0 V& _* T0 x;;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
& _/ u0 t* ]/ x4 ^9 L7 `global-proportion
5 X, n" |7 ~5 ?/ ~1 S* o4 ucustomer% e) S. C) a0 k* D6 j8 h6 d3 m
customer-no0 N$ F& f+ x1 [5 M/ Y
trust-ok
, i/ X7 u7 X! L+ etrade-record-one-len;;trade-record-one的长度
/ M9 Y/ m( s, T+ e5 j5 \]# \0 w. a" r% h4 P: Q, x: a& f" _! X

6 e" k8 c2 X% o9 i9 [' r. V0 _& W- J' a;;setup procedure
$ l' J  x* @$ }& k/ y3 N5 ]1 C0 a6 O1 h
to setup
  l4 X5 t: F( y* Y# l  J5 s
  X& [  @& M+ L9 Zca
) _2 ?$ n; Y4 M0 e$ j
1 g" W' m) w# _8 S
initialize-settings
: J0 o6 [2 S# K+ Z6 n
9 u5 V% D8 z# N( v+ W
crt people [setup-turtles]
4 z$ k) d6 F* H# b
3 N& |  h2 o3 J. C/ [
reset-timer
/ \3 l3 u3 D& S  Y2 l  B
6 R, V- `' Y( I! N  X* f7 ~
poll-class
/ u: z& a2 x% Z( J+ H1 d

( j2 w2 w. [  ]. zsetup-plots
/ n8 }0 g- {" \9 H+ Q8 O8 N

" [2 Z) L# J7 V; o2 a, U7 e" P7 sdo-plots
$ b+ y# w. {- P( e" O* F8 L( Z
end
6 A$ X# o- Y6 I6 [- w- r- N8 i* F. C  H% i- N& ]
to initialize-settings- C# E+ o3 S/ H" C6 q
, I9 w. U7 Q) T& p! l0 Y; }
set global-reputation-list []
7 ]1 a4 \) r7 P* Y) q# x# p& k

' |$ `1 Z0 i. I* a! g" Qset credibility-list n-values people [0.5]
& I7 \, u) c' _7 E

) i1 L* K+ J: P; Y" E6 tset honest-service 0
7 J7 K- |4 C7 }

. W5 [6 S9 D5 p; Pset unhonest-service 0
* K5 ~' e- c) z) W0 d

- y4 f3 a* u, |9 @set oscillation 0
7 f( z% X' k$ s! {' Y

3 _6 j* I/ l3 C1 dset rand-dynamic 0

+ [; R* \4 u, \$ b+ x: x3 hend; l, x' n. T8 ?. `  ]. r
( r" S( p$ I4 y0 Q1 Z; E' C% {8 ], d4 n
to setup-turtles
8 D+ O9 K2 ?; z: k) R5 N9 n0 s) yset shape "person"9 s6 E: @  z6 q! U
setxy random-xcor random-ycor
" T# ?3 ?, }. b4 z0 vset trade-record-one []
  A& e- Q+ F! J% I* O' d
9 B* e' J* f) _1 E1 P
set trade-record-all n-values people [(list (? + 1) 0 0)] / T5 B1 s) u  A; N7 ]# S
# i; h9 c9 \: W, \7 K7 |
set trade-record-current []4 u2 x3 l% [6 I$ O0 I6 s& _
set credibility-receive []- ?+ }: ?: i1 c  k
set local-reputation 0.5( M' V9 r: x# M0 ]& }7 l7 z
set neighbor-total 0
0 h% {: g8 s. F: d- \' C+ d; Z6 ?% oset trade-times-total 07 Z: l2 p( M6 X6 R7 M- T
set trade-money-total 0
  ~+ W$ {) e  p( Yset customer nobody3 S. k' f$ ^6 e8 t# K
set credibility-all n-values people [creat-credibility]
) z0 T4 ?2 {* u7 hset credibility n-values people [-1]
) [$ T- }2 P* I5 fget-color
: E- F1 b5 d& V" W2 x  d

( g/ n" ?; L( v- R# rend
6 I/ q7 R# S+ B1 X
/ j8 ^5 i% \$ ]to-report creat-credibility0 ?* T/ W( E) a. C4 H) n8 S
report n-values people [0.5]; J4 B' _2 g4 V
end; {" c* T& Y2 @0 H
  [! q" X: D: D8 ~; K4 C
to setup-plots3 s/ M  o. K7 e! ~# Z4 ^- c2 a

" `2 ?5 E. C( x4 [. L$ vset xmax 30
, Y+ N' P. z, j0 A7 O) b) W
/ z7 w2 p* b, P* K! _
set ymax 1.0

" d- L: U5 G3 m7 u: g
# Q, E5 H  y" y3 Fclear-all-plots

" t0 {  F+ I4 V8 W
2 Z+ [: \) v# A5 r* M, `0 Z; s5 ksetup-plot1

: g% t8 S8 e. l; a: O+ e( Q- f, v
& U% e: B9 w1 X) ^/ y' m! c% ]setup-plot2

: K! v. k/ g( @/ t' Q" h) ]
" T0 h5 }% e  Q8 vsetup-plot3

" F4 U$ L' n+ C# k  Qend# h. Z: |/ C! N6 p; [

. c0 J  r( k7 b;;run time procedures' g$ K: v4 o7 W! f

( i* {: J/ Q/ q9 gto go) ]2 d2 _- e: l! `0 L

( n' [7 z1 f0 u* F* q, aask turtles [do-business]
% F6 p3 I6 T9 l: g! U
end
5 i& [( m5 C4 \+ \9 ]' z
8 e, j2 j! @3 T' ?to do-business & ]' x$ q6 w, ?

( f( J# J* ?/ o! F2 ]. X+ y
% s% p. }4 Q  a- prt random 360
: t* n; }& ~3 \% v& Z' c* e! U

' z' z  ~& ]* b. vfd 1

  W! V( _8 A7 U$ C# a  j
! ?! c  w2 Z: R  h/ y0 l; R& ?/ cifelse(other turtles-here != nobody)[
* G, j9 ?, B: H( K+ z

9 }4 g8 a) i8 A1 P, [" U$ Wset customer one-of other turtles-here

# ]1 h2 L$ @, \$ U( b
( @) h( L; f7 Y- h2 r$ X;; set [customer] of customer myself

# n3 T, ?' O" E- Q3 J2 o# a: H
2 n& \$ Y$ \$ s( t1 R! Hset [trade-record-one] of self item (([who] of customer) - 1)# j' p) ~5 f1 u2 b7 c
[trade-record-all]of self( G6 o8 X7 Q; ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- I, K9 k! f# d" J& |( X3 [9 l- ^" k% V% c
set [trade-record-one] of customer item (([who] of self) - 1)
8 o1 ^: q' a2 @4 k- H) W[trade-record-all]of customer

4 W0 \/ ^. R( {& j1 ~; Z1 M0 I: t8 U" g. Q' d+ X- \
set [trade-record-one-len] of self length [trade-record-one] of self
$ z! L! Y- |% W; a2 u* k
: I' j0 v6 m1 ~" W3 c
set trade-record-current( list (timer) (random money-upper-limit))

' u' g( _6 p5 S( s. U; w, h! A# ~9 H
' v; V! v) `/ w' }  X' Jask self [do-trust]
: }8 M2 }5 J8 F3 v& r;;
先求ij的信任度
( F: Z% n  Q' x. u& F( ^& P
8 ]- v3 a0 W0 P( ^* `  ~& h- T* m& wif ([trust-ok] of self)
7 o  v/ N5 {  @0 T, w& @% S;;
根据ij的信任度来决定是否与j进行交易[6 f/ b! o9 I) b. X3 n
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: s0 ?9 @! ]% g" @$ k- u
# ^1 `/ {. m5 F# P3 ]' c  a[
; H8 C' M! Q2 `5 s' S

' ?+ U2 N/ R. _9 Y, M( bdo-trade
* r1 v( T6 W! ~) {
" M( i3 _2 S. F, _
update-credibility-ijl

: W6 D. y* h- `
- p" @* p/ C! ]: r, o, Dupdate-credibility-list* ?! H' |  U- G6 e- ?- \
  m4 S7 [$ @, i1 D4 p( w
# O8 v5 i" K  U# t5 ]' M
update-global-reputation-list
( k2 k! Z- B% _  c

- B9 V  b2 R( A9 ~& s& npoll-class
+ ?1 o/ J+ X2 K' L) b' @

$ k# r5 V8 X) T) C. s" I8 pget-color

  z0 O" K% C$ E1 |- U6 K4 g
% q- W% X# K/ P$ n+ h]]: B) |/ ?% w8 C: `# g4 p* l2 \8 a

, |! k* }# E6 e; ?$ q, P;;
如果所得的信任度满足条件,则进行交易
. L+ T2 r% |1 a6 n( y# C" }, d. A
8 d; A$ y( T' L1 A[
* y. c$ t* T7 q8 E/ E( S- M
# d0 e: t" y7 t
rt random 360

, e7 H- u- l7 }) @* g* r0 o" X! R6 k+ ]) ]# e+ n
fd 1

0 a7 @( v0 Q2 N. z- {$ H& t( R7 W/ R' L
]
) t* f/ W& Z. e$ q4 W
* }; w* C( U9 @4 @# X) v2 Z- K
end
$ X7 e7 g: W/ e* f& _' r% R0 j
1 ~' a9 R2 e" O6 {7 g
to do-trust
- E6 N' Z* w  E2 f+ R% ]1 aset trust-ok False
* u4 s$ X# t" m4 h7 F9 H  w
- V+ y& y; C/ w/ m+ U+ ?$ y! n
5 ^' m( ?8 g+ Z; ^* z# L
let max-trade-times 0
" L' n- b' T. v4 O1 qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& j) q" i6 J4 N! W
let max-trade-money 0$ f" x8 z6 l# W$ J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  q; n4 `' m7 x$ Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: _! W5 s8 u+ g0 j! a/ C& |2 V, c. R! `$ W
5 g) e& j% g) M
get-global-proportion
7 [/ x' }6 t2 Z  Flet trust-value
  m, v! J( B1 k, l/ Xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

3 j8 `. k6 Q' l- {+ c8 Pif(trust-value > trade-trust-value)
2 p# v: O  [2 H[set trust-ok true]
4 _; ?+ B4 W# i' l3 h. Pend
. Q2 X! V; B8 M% c0 W
* z- c. Q' ^% d/ ^5 P# s# ^& ito get-global-proportion
1 ?! q# a6 ?* F) u- uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 H" M" g8 D3 G3 I9 F$ U, R$ v& e# w: ~[set global-proportion 0]* l% h1 H$ O3 q9 d+ M; t0 }
[let i 0
5 q  B3 Q4 w( {( s; alet sum-money 0
7 w( u. ?' q# E# b9 c  _3 Gwhile[ i < people]
0 \+ V2 n! e" I9 T$ n6 F3 M' S[9 B' a3 O& Z' V) l7 n
if( length (item i  H( M) U- z' k# c  b
[trade-record-all] of customer) > 3 )
& T: j" P* ^# z- B8 s
[
7 ~) P9 u3 m, E3 G) Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 f# W7 `. X7 G3 p) V; u/ ^! ^
]# b& [3 L( E! \" r3 f
]2 v5 J2 s3 `, e' T& V
let j 0* ?, w9 J1 k5 M
let note 0) Y! [5 j' V/ d3 i
while[ j < people]
7 y3 {% C+ }$ q) d6 J[! ?. \  `+ t# U  J
if( length (item i
* x( M8 ~5 A, d: T8 o% e% h[trade-record-all] of customer) > 3 )

4 j& G( D) g( r- a4 x[
7 E% f9 Q/ Z0 H0 _ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): s2 i' R, j  Y" j- C
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 e' z: }- R7 |, Y, ]8 ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 K: i/ V; q) }" E( s]1 A! k" G! ~/ G, d2 G, M
]
* j* p  V% Y& [) z& U$ {) w* iset global-proportion note' D+ `4 j. n2 q) a
]" _5 ~) ]9 l" I8 i! e. @
end& p- H% P0 @& \

* }. B7 s5 r- \. l7 C, s- G2 C3 d' Xto do-trade
, v5 d) |; X* q; \" f2 K* g  c5 n. ^) K;;
这个过程实际上是给双方作出评价的过程
6 L  ^9 `. a, t* J0 z, _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* e9 _7 q4 Q, ^1 s# @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ m7 x% j1 W$ j6 O) V! N
set trade-record-current lput(timer) trade-record-current2 r; k0 ~9 s$ W" z4 ?! y7 r) h, l
;;
评价时间/ e) U9 X: W# E' F% X
ask myself [$ U: s4 j7 H0 w; v; {  }6 f
update-local-reputation
5 o" S9 `! `9 |7 I/ [' D7 kset trade-record-current lput([local-reputation] of myself) trade-record-current0 @6 }9 J9 ]/ Z( I& Y: F) @( A
]
  v; h0 i8 l3 V$ mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, l: O5 C! M! q  Q4 L;;
将此次交易的记录加入到trade-record-one& D! p% ~8 o' U$ @2 }0 C  W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 L* g* H2 i( _- u) K- V
let note (item 2 trade-record-current )  s$ f" s  h0 A* K: e- g7 S
set trade-record-current
& S! e0 x; ]4 o; P1 {(replace-item 2 trade-record-current (item 3 trade-record-current))
/ F5 X4 n- F6 q! J
set trade-record-current5 L3 }' B; ~0 [0 U/ Q
(replace-item 3 trade-record-current note)
  S  j- i' _% K
* g# V1 q/ f9 ?1 f# `* H
& F2 C  {( I. ?9 V  i/ m4 `
ask customer [9 g1 {+ N% I8 E
update-local-reputation& L) n3 J( h  i+ J, @
set trade-record-current  e- G1 v" D: E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; i; P3 b% w4 q. T2 Q: D4 m% Z! B]
6 v4 ^9 X4 K; L: F! p4 V" n
7 L: X! ]/ z* m, ~& j0 d* m
& D+ N1 _1 k- E( Y6 d$ F
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; r- o0 `" c) c' G* V+ q1 s1 X

) F. L' W- l; |& \9 D7 @+ Tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 y; E$ X8 ~. l( k7 J* y6 o1 N# f& @
;;
将此次交易的记录加入到customertrade-record-all/ H3 J, Q0 ~  U
end
' b, c" M4 z5 k$ @- @* J
. L% x$ E& s& v" E9 ?8 F& l" N" Rto update-local-reputation
8 Y$ `) x; |8 @set [trade-record-one-len] of myself length [trade-record-one] of myself
0 V) g0 ~/ f, h/ t) B9 Y$ c% g1 P( K' X5 f/ {

8 \( I! R4 C" f;;if [trade-record-one-len] of myself > 3
) d" D% S! R* `
update-neighbor-total
* h0 W, S7 X( ]0 j;;
更新邻居节点的数目,在此进行- ~6 i, K- ^2 G$ W( H
let i 3
) Z% E* @1 x0 H: i) @% \" z( R( U/ Olet sum-time 0
" E" t. |5 @% D1 |, ^7 mwhile[i < [trade-record-one-len] of myself]. v  h6 E7 X7 l6 g' u
[- P  p$ a) ~! B7 K: R" J! H1 p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 N* x7 C. _+ T
set i3 C5 ?( p5 {* \5 j# L" z/ p
( i + 1)
& w# V7 v2 L/ a0 c0 k* c
]9 [& a( a  z" Z9 b+ ]
let j 3
4 D* _+ ~, u$ z+ Blet sum-money 0
6 o% B* W0 @/ o- f- ?while[j < [trade-record-one-len] of myself]; J9 w+ v- e5 C$ J$ k& p
[! ^. p, u' h* `( Y: x* u: m, _
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)
4 W$ g/ U9 r& b0 t4 `' ~set j
) m8 r# `8 S0 N& K; Z( j + 1)
* a4 i$ @7 z6 R
]: C: {. |, [9 f  g/ ~
let k 3
+ E" [; y0 s8 w* J7 D. @let power 02 q- n" M5 Z2 W# h
let local 0
; F2 |; i% w8 Dwhile [k <[trade-record-one-len] of myself]
' W/ m/ I5 p5 {7 [0 m8 n[
1 d+ V9 J' |5 ]1 d; O9 nset 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) ; }, |; S" Z% f* j/ j* L5 S
set k (k + 1)) p1 t5 A: h. P* O  {; I4 w
]0 Z5 w4 R3 x) _1 L7 r' J. K
set [local-reputation] of myself (local)
# d  ~! F8 q3 hend
. }. ^2 O! E7 M$ {1 w2 L' {; D- t4 A0 h7 \# g: v' V! C6 B# @
to update-neighbor-total
" |  {" y* g9 i$ r* F* q9 J. D  I/ @+ e+ m5 C" V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. }8 c7 b1 N: [' [  }1 G; l. t" N! w' J$ A3 M# {
: Q5 K' k& R6 y7 s. L2 t/ B
end
3 c( }" q) P$ @$ i; Z5 @
. P  I* I$ ~5 n3 Rto update-credibility-ijl - [4 G# G0 w, Z' Q# j- M# C$ _
1 R; U$ }4 B) m- D6 P
;;
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。
" ^, u8 @1 w$ `; i- h% P, `let l 0& I& Z9 E2 E7 ~6 N* c' S$ P6 m; ?* S) d
while[ l < people ]
" @! o5 O  a3 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
1 r5 u; W- R3 h* |7 I5 u) ]) q3 O[3 D+ ~! @  u0 y0 N. _$ p* q9 L
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- `) C7 v7 n& t1 d' h4 P2 x3 q5 v
if (trade-record-one-j-l-len > 3)
3 ]0 a8 Y* M% t+ _: }' a[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
7 i9 ^4 V; p4 O2 [- m) Alet i 3" T. h" t& e6 h! M
let sum-time 02 L4 r1 g; V1 r! n7 B  c% W. p
while[i < trade-record-one-len]
# ^7 X3 ~5 [$ j[1 c1 B. }" `# s9 z- l
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ Z* X5 N  H# }! g5 r2 I1 ]0 p" uset i( S6 L* U# ]2 r2 M9 V" F
( i + 1)
$ e: `6 }$ y/ e1 z3 L2 {
]" {& B) N3 [, h  C! ~
let credibility-i-j-l 0
3 C9 f+ h4 x4 m( x+ W: c;;i
评价(jjl的评价)
% v% q9 _/ L) H. ^6 tlet j 36 r3 W. M5 I9 C! w5 Z& e
let k 4  j& i! }1 s2 r; @, K$ z
while[j < trade-record-one-len]/ Z+ `& W$ v" b9 C2 B
[/ D' F5 E# ~; s
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
9 S! G1 I  g: M3 ~  k# p' vset 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)$ e' W0 O2 {* ^) Z+ A
set j
+ u7 }9 f: M/ u5 O( j + 1)

; ]3 k: ^# j( B) J/ l]' l. o; ~; ~( c3 w6 @( X+ E2 I
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 ))
: E2 E2 w5 i8 }) U  b/ O( l0 d# l4 c  L
* _7 d- W5 G" h3 `/ F; r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 o  \% y% e8 |, n. _;;
及时更新il的评价质量的评价
. X% ^1 [; M- G3 T+ e# o( }set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ `' }4 ]! J9 U/ p9 B
set l (l + 1)
& s8 N1 M5 n5 e  q  y; l. k3 Q]
/ ]: S/ Z& B" @end' y1 j  Z2 j$ ~+ T& Z
9 T# B; H" L* A5 s, |
to update-credibility-list
* q* p7 q" K6 r% [6 zlet i 0
# G3 l/ A1 x+ D4 I; ?1 Kwhile[i < people]
3 N: F) ~5 @8 }, d7 N[  a% D/ [2 E/ m! b0 z6 B& v
let j 06 Q8 m3 ]2 q( a7 E
let note 0
  U+ T& {3 u8 K- I1 h( T! ~, T1 b0 dlet k 0* {7 C, U8 v. d+ T* B
;;
计作出过评价的邻居节点的数目
% A* |2 E6 A' \) `% O3 A& P$ swhile[j < people]* p( ?; {* @- p+ ^( e" r
[
# R; H2 s2 ^' h% }if (item j( [credibility] of turtle (i + 1)) != -1)
+ s4 O" I: d9 n;;
判断是否给本turtle的评价质量做出过评价的节点7 ^9 \- W% t( t! x
[set note (note + item j ([credibility]of turtle (i + 1)))* s% K, B1 K3 Q% X5 p8 \! ]
;;*(exp (-(people - 2)))/(people - 2))]
* k6 L2 H9 [) V
set k (k + 1)( o" {" M% q' V, R0 ?* H6 d
]
" W; F3 W: _; C7 f  {+ k0 dset j (j + 1)
( x5 N/ j( C# i, p]
7 v9 i$ l7 ^/ @; d+ }set note (note *(exp (- (1 / k)))/ k)
4 N/ a8 U1 l- rset credibility-list (replace-item i credibility-list note)
6 d& j% G, g0 c, |( j' T  K& lset i (i + 1)$ O/ F# Z# I2 T8 k
]
( l1 U( S8 N+ b9 q) Kend
( n/ I1 E$ r* G& p: w/ t4 U9 y
to update-global-reputation-list
  R. i6 ?; x& m' Llet j 0
3 |. s2 v( p+ v& Pwhile[j < people]: u# U. e5 t6 t+ \+ Q
[6 g. c0 @  A7 h1 ~2 U
let new 02 G' z, y' W) M! C# l; w
;;
暂存新的一个全局声誉5 Y" N& E: O8 V9 _+ n  q
let i 04 Q. G+ C0 Z4 U7 b2 B. X; h" d- a: G. D
let sum-money 07 H/ ?$ L1 l& F5 ~
let credibility-money 0
6 _# }, G1 `, M/ Hwhile [i < people]0 `2 O/ H$ J7 W: d) x) w- f
[
7 x. a+ ~. |7 u) o7 C# \7 eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* `0 r$ D0 {" o! ~9 |1 C2 B# M
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( }( C0 [' |; Q' S4 N& A& r. Q
set i (i + 1)
+ Q6 C: R$ i9 {' C- T8 l& g6 ?]4 T5 Y6 z: O1 Z0 V- S9 r. b/ X
let k 0
  E# t+ {$ _* `$ O+ p9 ilet new1 0
" x  ~6 E  f; m- w1 r2 fwhile [k < people]
* e8 ]( Y( p  p1 v[0 x9 w# S. N$ _/ H
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)
! u" \; n# e$ `set k (k + 1)2 h2 |1 K( O. z6 S: ^4 J  I2 E9 Y
]
7 t0 p4 I( ?; U5 o+ [8 o4 `' Rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 Q' F0 J" ?( K+ [& E* r) Qset global-reputation-list (replace-item j global-reputation-list new)! C/ u  \- K( b* T: r
set j (j + 1)
4 {# v, L: t! u9 W3 _4 @4 c) q]# Q+ k# L! i) t1 Y  G9 q
end
6 `0 V# M- c5 p, @4 R
+ {+ S: `; }; m! G" J  x+ t- G
2 T, n+ g5 C0 ]) `# Q- O) d- Q/ E* n: r( ?8 o9 |: x
to get-color
& V5 J7 b7 e5 Q0 }' e. i; |- ^& E2 ~2 k$ A; G
set color blue
& D7 z9 {* ?7 `3 I# J
end
. i3 O2 S9 d$ X+ V& h- X
% V( R2 y! A. c  g3 T  Yto poll-class
" f: }( K' i" bend/ T4 u+ j  ?" D  r

' u, ?9 W: _2 Ato setup-plot18 d0 x' e) K& c: B3 X: c1 M$ P6 O$ ?

; v& H# M) E; hset-current-plot "Trends-of-Local-reputation"

3 ?; X: L: [3 v* n/ i' w
1 T) m9 r! ~) h$ `# \3 Yset-plot-x-range 0 xmax
6 x# ]+ V0 {+ D* b

# a8 c/ L/ ^+ M. {* D& l$ `0 Bset-plot-y-range 0.0 ymax
/ L0 U5 l7 S  z" I
end. G  X$ y  v3 t- z3 U( @& b* S1 X
. h) |0 H  O" s# r/ w
to setup-plot2
2 x2 ~' M7 z" v" s
# \; |0 Q* r' m. M- b- e# w/ q4 Cset-current-plot "Trends-of-global-reputation"

2 p2 C9 S: G. `
& ^$ [! D" p/ Uset-plot-x-range 0 xmax

, T, a: _( ~+ \3 b
9 e! J  X) G2 r  Tset-plot-y-range 0.0 ymax

) |: n8 m6 j( H4 s6 L: a# T7 dend
& H4 v2 s2 Y! e4 V2 V
3 Y  @( z" u6 cto setup-plot34 {0 W" B7 H( X( U& \# K0 M

* q6 S# O% Q" b/ iset-current-plot "Trends-of-credibility"
( F3 H! b7 e' A! K2 z

, L  @2 l; ]" C5 w$ V8 T% yset-plot-x-range 0 xmax
7 I  ^6 d' c+ S1 ?3 s+ r. Z
6 C5 }/ \  Q0 J( t4 T' J, j
set-plot-y-range 0.0 ymax
2 A( Z  X  L$ ~" |5 h/ n
end* `; l$ o, E5 V! h2 @  ?. t  @! U

- }7 x* {& ^7 d# a+ q) J, J! yto do-plots. d# m' l% _1 L6 l0 z* T
set-current-plot "Trends-of-Local-reputation"- L8 P2 ~/ p8 Q: ]
set-current-plot-pen "Honest service"2 |7 {2 \* \: y" W" X: |$ }
end
) ~4 J) _) c% d7 N3 Y
8 V; N7 J3 M6 j8 I' R& D1 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 e/ x# a! e! R4 u! R2 P

' S7 d; T$ @7 b2 H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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