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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:
: P) _. \2 L! [6 O, _! Lto do-business
2 [" O' g1 r2 s& x  k2 Q rt random 360/ t& _) E- U) v5 a
fd 1
9 Y+ `" x% P, v ifelse(other turtles-here != nobody)[/ A0 Y9 g& \1 A6 i/ ]$ [7 H! O, f
   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.
. O* U- N5 a: Z  m8 F- e8 W: ~   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! P2 F6 [# l+ }5 p9 p$ n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 d) O: W) i8 f7 \7 D  \   set [trade-record-one-len] of self length [trade-record-one] of self- K/ _: m: S. I+ a- x
   set trade-record-current( list (timer) (random money-upper-limit))
" O) `( b# \' v( s  `" T' I# E+ I/ N8 M& Y- ^' h
问题的提示如下:
3 K& U6 n7 n* g, v- Y
5 ?0 n8 M7 Y2 C2 merror while turtle 50 running OF in procedure DO-BUSINESS
* F# q" U; E% c7 C& N3 r$ k# N2 u  called by procedure GO# }; M- S! W. [! ]" |* P0 x0 F
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' d* y+ f  ~: ?# t
(halted running of go)" q2 f& @% ^1 `5 c: S/ y

4 T  c$ n7 X& M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~~# b, X  d1 F4 z$ v8 h& F( \
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4 p$ T- M& L4 o, ]: B
globals[
  ~( N, r2 T& D& C. ]; c" axmax
" p% n. W1 _" z, u4 n1 Dymax
, p% c+ O3 a; f: S+ V! L) {5 Xglobal-reputation-list1 ]8 ]6 ]2 \- v5 Y3 @+ M: {/ u
" T: ?; U0 ]- A3 M
;;
每一个turtle的全局声誉都存在此LIST$ N( N3 s# |7 i) w8 K4 ^
credibility-list$ a; `/ N! W# }: O
;;
每一个turtle的评价可信度
: _) W# c; u+ r* m" U# Yhonest-service4 P9 U2 b8 N' N) `& ?6 R
unhonest-service
) a+ j7 C! U+ p0 `oscillation
' W: n9 Q  Q% R9 `# crand-dynamic
/ ?2 o$ X# U% @6 J]
3 v8 r/ S! t$ H: I4 ~: E
" i! {# ^, o' u0 Yturtles-own[6 F+ z' D& R4 S0 W
trade-record-all: D) e# H& m. e
;;a list of lists,
trade-record-one组成
  d; @7 e/ V/ B( y+ K" vtrade-record-one
# S* }. }6 d0 T( t4 P6 I. \;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; c4 T% m% ?# M* A& n# g7 z/ Q
3 h% z! G' |  }: ~
;;[
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. ~/ L  j; y: ~4 y; btrade-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]
2 E2 O+ e5 q& _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& V2 z# q1 m3 s
neighbor-total
7 K' {1 N0 m' H# L;;
记录该turtle的邻居节点的数目# e+ g! ?, f) N5 j6 H( j; d9 Y4 ^
trade-time
1 s  v: O- ?$ c+ R( Y5 F;;
当前发生交易的turtle的交易时间" L4 r8 j% ?* t. I) r5 a
appraise-give
. F" B" x" E( i* k# \) q;;
当前发生交易时给出的评价% T! y6 I- g/ Z1 i9 q
appraise-receive
1 D5 N% Q+ H0 X% {, S1 k* P. ?;;
当前发生交易时收到的评价0 |+ u4 G  G: L' a
appraise-time
, ]6 Q. u5 B: D; H- [# _;;
当前发生交易时的评价时间
) n, X! D! B/ C* ?" V, n) Tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
, }: q7 @3 m2 j/ P# r  b. L% Htrade-times-total3 d& P& M* e  |3 }3 o/ d) z
;;
与当前turtle的交易总次数6 E8 q- e+ p9 A. U" c/ g
trade-money-total
( r* \2 q  a1 p0 B  U;;
与当前turtle的交易总金额
/ U9 g% U, v" Xlocal-reputation* w, I6 T# i, l2 f; A2 q
global-reputation" q5 {  M7 n+ g3 ^  r' A
credibility
6 L8 s' l6 Z4 Q$ b% J- l! n  Y;;
评价可信度,每次交易后都需要更新6 T/ Y! K$ g1 q7 P3 p: d' a
credibility-all
# n& H6 g3 m$ G$ H8 V, u) W;;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3 t4 K  _2 i! e! o$ V5 T
. I$ I& Q% d* O* C( ~7 L+ ?
;;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. L  H/ `* d4 i% M7 Y4 ~' Wcredibility-one: C9 F- \7 U* i1 X  v( K
;;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
) C4 D0 h# E  e8 ~  x6 E! ]global-proportion
4 h. H: h# X2 G9 m$ xcustomer
% U0 _8 w0 x+ q0 a6 @) _! rcustomer-no7 w* p$ I4 l& U2 \
trust-ok1 k! m- b3 U3 q" U& o0 M: Z5 u* }
trade-record-one-len;;trade-record-one的长度# J+ E; o% k/ S4 w  i, e
]
/ @- {  L# P- u( g) \5 ^9 I) U& H; Q( z0 I
;;setup procedure. j* O( l; r7 Z* |' n* F

+ p5 L# L+ e; ^& e+ Sto setup& @$ o8 v- t; w* i& C

$ n" Z* q4 c! _( |, b1 Wca
$ i4 g+ a/ J  }, y* v4 E

7 J8 |" [7 I! Y4 sinitialize-settings
  e( ~8 {5 h" w# y2 I

7 H8 p% b8 o% ?2 b0 N3 d6 ~) L3 Ucrt people [setup-turtles]
  k- l2 v0 W# ^) D5 m6 z. n2 v
3 o5 Y6 T, h2 ^/ q$ G
reset-timer

. [5 b4 P  u; U9 c6 W9 o+ B: T  o" U. }2 P; t$ f$ W
poll-class
0 E5 O5 T" \0 y9 u& S; g  g" _

' p, o8 n3 R/ P% {8 x4 S) M4 msetup-plots

% t. t7 a' t& O6 a0 W! m, a* b& p$ m9 w3 j
do-plots
  y/ i' f- U- b* h- c; |2 K
end
, U! D  }# \, I/ M# r
9 _) ^- i8 {0 m. ]to initialize-settings
( _6 `' R; U9 v$ |/ ]" O: [  W8 |1 E9 U' y0 k8 ?& y1 o3 L
set global-reputation-list []
9 ]7 A1 H9 Y' f1 W

2 p# U: t$ L- K: {4 f; s# E# ?set credibility-list n-values people [0.5]
1 a( [, k# u8 A9 i& @

* P0 S! v& o( V' P9 L; aset honest-service 0
' I% J( q( u+ G( |& v% B
  Y1 l: q* _( Q
set unhonest-service 0

7 b, I$ y* h2 M3 k" B
5 S- k% E& |7 xset oscillation 0

0 V/ o4 r" b5 u6 m2 Q  j; V
( ~9 `  [/ j/ A$ qset rand-dynamic 0

1 s* d9 t8 M: j, k0 zend
& p* f; K5 V2 `1 c# b5 |
" a; L' ^) L# C, rto setup-turtles $ M# x' ~3 B9 R
set shape "person"4 y# p3 w+ G% s/ D
setxy random-xcor random-ycor9 D1 O# }- @& |  I
set trade-record-one []
. P# h- I# q0 H6 H

! r# R( z9 Q; e: l/ o8 o: }. Wset trade-record-all n-values people [(list (? + 1) 0 0)]
: o7 }! @! N# Q- _& s) y; k

) i0 ~' ^. y7 }9 m% @set trade-record-current []
# n& f$ t) c- C* t* q. z. wset credibility-receive []
3 t2 A" N8 {* @% I7 D; o7 tset local-reputation 0.5
$ e) F( e) c; p/ oset neighbor-total 0& C) D/ q; Y- n6 @7 K9 A
set trade-times-total 0
1 d- c% f! G% kset trade-money-total 0
1 b# ?  \, J1 w* ?) \set customer nobody1 \6 B! ]6 H6 N5 U  H3 H* X( Y
set credibility-all n-values people [creat-credibility]
, u, h' e; z( qset credibility n-values people [-1]5 ~+ N' \5 m. [+ P+ L
get-color
5 x# @; y% @% B8 q& `9 Y4 ?$ q3 |4 O

: C) E2 D/ x" a1 d( Qend
7 o* c0 F5 ?, j7 I; H- S: f, x' I2 ]+ H% v; A
to-report creat-credibility
5 Y* G. l9 J3 O# B6 v2 e3 Areport n-values people [0.5]
) n) j7 x$ A6 O+ c- l2 j4 e% ?) N: Kend
! K! ?1 T# _$ u. O- R
$ G0 t. f2 ^' h" N) x0 ^to setup-plots
" S! r# q- R1 c5 ^5 W, e. ^1 r# F$ y" a% m, Q
set xmax 30
. l! H- V+ \0 Y( C
- Y/ N5 i4 m9 v( O
set ymax 1.0

9 T5 i0 u! h. U: n: f; H, Y. p3 I! J1 V+ P- T) R% p9 Y( B" h2 p
clear-all-plots

4 X1 H" G& H4 L) w6 Y$ a8 t; c# e- {4 R# ?) w
setup-plot1
1 N7 C( |- w/ i* j

# b( ?0 T. t) v" y9 P# ^- k: msetup-plot2

0 E+ I1 U" f/ X6 ?
: r3 |" S, o+ `  c3 j8 r( v8 Psetup-plot3
: U- B& I5 U+ Z9 C, {/ h
end1 w; R" k6 e4 `7 D! {8 A
) B: l% I- Z. f$ I8 S1 }( |
;;run time procedures0 T, r- }( j) @  @  Y2 k8 M

$ f  K5 X8 N5 ^7 Bto go
2 @+ M" T) |" A9 E4 t" X2 S- {5 l+ k( N
ask turtles [do-business]
7 L; N1 l+ S. M+ Z; |- A/ f$ r9 d
end
9 E1 F/ s% N* u5 s5 X
' h+ m( I0 K! m2 m+ Dto do-business ! x, q. _7 c7 D! `0 d, G
% C; g# o# A! _+ t+ V. Y

4 m! F+ U" L6 ^: e. O  U) z/ W8 ort random 360
( t" D3 p: V- N7 m

1 E: w; |( b  mfd 1
+ W& |2 ~8 @8 ~! V

! H1 Y) j; V, d" ?( Qifelse(other turtles-here != nobody)[
. o& C6 C- i' R: G5 U5 \' W

( t0 ]2 I( H5 |2 Z9 ?set customer one-of other turtles-here

) C/ p) w' ^+ p) K( I2 }6 A! k6 \& S+ v3 X
;; set [customer] of customer myself
  }, d7 L- S% |

6 w9 P- Z0 x8 e8 G! ?set [trade-record-one] of self item (([who] of customer) - 1)
4 l* K- Q/ ^# P; m4 a[trade-record-all]of self# @5 v9 c9 t- Q" z  m4 j
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 I6 ^8 O  q, D6 `1 ]6 f7 U" U

9 C8 }+ z% s! ^4 ]3 fset [trade-record-one] of customer item (([who] of self) - 1)
7 }' e1 B* U- B* b+ X. g[trade-record-all]of customer
/ K2 Q' |. F* e/ h9 Q

' N7 g9 u+ ?; r+ o4 aset [trade-record-one-len] of self length [trade-record-one] of self

6 {4 s9 x2 b3 T+ S
) M. k: w" U( r0 x0 F/ Cset trade-record-current( list (timer) (random money-upper-limit))
3 D4 ?0 y; R0 y( u1 u

0 Q) o) f9 {* c; I( w9 M2 l3 Iask self [do-trust]- l' b/ P) C8 \: M, ?7 M# r
;;
先求ij的信任度* A( [. {) A: H; ?

* n7 m5 e1 @2 c" U5 k& I% }" xif ([trust-ok] of self)
* x7 P% x" D2 c;;
根据ij的信任度来决定是否与j进行交易[* @& I+ j' g  W+ l% Y1 p
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' F; T0 R) s. Y5 Z3 p6 r! u

; @; D" C5 j5 [[
  N2 H! v* P& B/ g7 h

4 C$ l# y* B) F7 `6 ^/ b$ zdo-trade
; q6 c' l# j  u% K) |( c5 R( F. C( _

. ?2 b' |: K4 j- R* supdate-credibility-ijl
' R4 S# H7 W6 Z3 T
' q6 E# o  J  O: J5 b  I
update-credibility-list
5 W' M. L2 {- X( _* P
* C9 C) |5 ~! I2 D  z

% m: i' M, ~: U, }: fupdate-global-reputation-list
7 W: r) i. }! z) S

9 ?( J- _+ b$ n+ i: P9 c$ _( Kpoll-class

4 @0 g0 ^, m$ m' N6 u$ \( Z
/ \3 g% S# P6 _2 Xget-color
9 L' b, y5 h1 _1 l$ N8 @

7 v3 U) E- W. k, A5 |]]
  Q+ O9 {( l! [
- `7 N  ?$ e' M$ `4 f1 Z, B+ c5 };;
如果所得的信任度满足条件,则进行交易( r7 L) e) K2 J9 Q
. h- l+ a- h8 @7 J$ Q; j# i
[

) U1 I% T) i1 e# R# n0 U) W
8 O8 G6 j& Z3 r+ f+ H& urt random 360
9 ?) `7 w" W4 y! i6 n. N4 L
' y, _, [+ ~7 D* p0 j3 a
fd 1
2 s* l/ b. o& _0 O" {. J
$ }+ V# G; O. t' Z3 R  r, o# {9 o
]

( Q3 |, \$ L- u) _8 x0 D  i- r2 F+ [5 C6 y
end

3 R0 I& W& W; G- `
; J6 X- ~2 ~+ b9 u; v. U* U8 ~to do-trust 6 B2 g4 w( o& U4 \6 K$ n. ~7 n
set trust-ok False! y; Z4 p0 _0 N: q
' }1 {4 y3 P6 X, w

( W0 Y% H% ?1 R% G0 Z# {* [let max-trade-times 0( K) x) ^3 u3 z8 ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# _* N- U' S3 Elet max-trade-money 0
; [2 x0 w4 ~! D  }$ J  Fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 }  ~# m. f6 O2 _, U& M3 @let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ l! G% d5 h' l5 R, \* e4 O# B% P% d6 r% p1 a8 }  T* Z4 @

$ e! Q) l5 H/ i+ a+ b0 g" Bget-global-proportion# ]" I3 W+ ^7 k3 K- Z* i
let trust-value
+ |; G# _3 v7 h1 |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)
+ U0 B# L# S8 Z$ _% K9 s
if(trust-value > trade-trust-value)4 q" V' f! U: p) k1 ^
[set trust-ok true]- B4 ^/ M3 [0 Y  P" x$ D/ w0 b1 ~
end% Z3 U: T6 t# z* j3 n! s5 e* E
" i4 u+ Y- j! ]* P" i2 P; v1 w# X
to get-global-proportion+ n/ r. Y( d: U' C! p: V7 s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& D- U+ w$ \) H[set global-proportion 0]" h1 }" m. c3 C8 U4 Y8 q1 [5 G
[let i 0# F4 X4 Y- c! q9 ?, p
let sum-money 0
7 `0 l# j. d  m) P1 V5 H6 Wwhile[ i < people]
5 Y" l# B" X" w  x1 ~) X[
+ d0 ~: ?# F$ mif( length (item i& t. i) T4 ~. p. X+ E6 Y$ M$ I
[trade-record-all] of customer) > 3 )

$ U$ h4 [9 @$ B8 m  P[$ ^7 I" @; o5 I! W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) x: D6 m. o( U
]7 N  L# v" m2 E' F# B8 F2 I' k' w
]% R* X5 d6 E9 L+ B( n+ l  A1 {
let j 0
6 e# M3 t7 I" {1 D* {; j/ q: v$ \1 Vlet note 0+ h& a  t- `% F: o( r; K
while[ j < people]
1 l( H6 k* v$ a- f% D% _[
$ o; X* `, m3 E8 Vif( length (item i2 P% V9 i! t# p' x
[trade-record-all] of customer) > 3 )
0 G& _! _$ `* s9 W% K7 A
[
( [; k! K7 S1 u5 mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 x$ n+ t" C$ ?; b2 T  _
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: {# j3 z) h6 x% @& O  [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( D+ N+ A3 h& D  O- \9 N+ {! L]
5 E$ W& e' a  P' J/ e$ e]" _% O( H. f( e. C# U
set global-proportion note. Y( H4 b' S4 j. y0 b
]
- o- @, z0 u+ H) i7 E: jend
% N' q, P* \0 C: [% h* D) b  I! `
8 I0 ]1 y4 G# b2 ]7 K" K2 ~to do-trade! B  \: [* k& K
;;
这个过程实际上是给双方作出评价的过程
6 i( }. i! ^4 D5 c$ n% n. ?6 oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: E/ l+ i; m/ S4 E* n' G% ^2 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 Z, m4 D  v4 C5 T, Tset trade-record-current lput(timer) trade-record-current
  z7 e  o( r3 `! h- D9 w- ^3 b) x! |;;
评价时间# l  O3 U) o* w
ask myself [' x/ o- N( d. H0 Q) `
update-local-reputation
: ~  I" w2 |$ X  h* A' dset trade-record-current lput([local-reputation] of myself) trade-record-current7 R6 g7 P6 p- p* ~2 p
]- T& H0 F2 H& W
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# w; a9 t4 ^" g
;;
将此次交易的记录加入到trade-record-one5 S& p# d5 m2 M3 W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 X0 Y& l( c, V
let note (item 2 trade-record-current )
7 |: U6 N/ b$ ?' H* ^# Eset trade-record-current
. `" ~' J: D$ b8 i" k: T* M+ ~(replace-item 2 trade-record-current (item 3 trade-record-current))

3 {) Z1 _. V: Y$ g9 H% v/ mset trade-record-current
/ j: o' L1 k& l2 h  s- W(replace-item 3 trade-record-current note)' u7 ~0 H9 W) D* k0 O  ]; U9 a( w& g

3 o( `( g6 N' f2 F. X& p6 n
( _9 o$ ?, v6 Z1 G
ask customer [
' N- b+ D2 f& p; }7 _update-local-reputation
' q- ^8 R2 J. _  ]; {set trade-record-current! ~/ Y. W  j! y7 G1 u* ~! X& v6 X
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& C! m2 V, f8 L
]7 E, C: q- v  ^" ^

' c* k3 |; M8 e  b8 W
4 Y! h2 s4 o5 P. H5 [0 }% q6 d
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% [1 f8 ~' a. k6 Y& V
! O. q: A+ f: S& |; Z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 `- K- P7 m& I( k
;;
将此次交易的记录加入到customertrade-record-all4 n& ]$ D/ R4 s* y  f
end  D0 V6 H7 o8 O; y7 E/ W, X

* k, b- l" N0 I& hto update-local-reputation
& Q$ d8 y% m' i9 tset [trade-record-one-len] of myself length [trade-record-one] of myself
" v- o) Y. [( H7 b
9 [' M5 ]- p; ?$ m
$ z+ B) v; Q; L4 B$ B: Q4 R" P6 z% Q;;if [trade-record-one-len] of myself > 3

( Z2 b0 U3 r' M' Jupdate-neighbor-total6 ?+ G' |% `; K" M* r, v! I
;;
更新邻居节点的数目,在此进行
0 g* |5 G+ h) H4 K$ x+ R7 W+ D+ {. q5 ilet i 3
& l, M& X" h5 J& O  v9 Nlet sum-time 0
3 R. S" M& r* M$ u8 I9 Swhile[i < [trade-record-one-len] of myself]
9 w# K. R# R4 s0 ]( w[
, V' h, t% P2 gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ M2 W) Q1 s# w2 l0 G0 v, ^set i. z7 }2 j4 v4 k: J! j
( i + 1)
  ]) M2 z) `+ k8 t
]" F+ m! J  @5 k) \& ?& I* [
let j 3( f; j9 F  V0 R' B, Q' i( k. n  g
let sum-money 06 J7 C. i4 h. x! r' M% o: G9 M9 }
while[j < [trade-record-one-len] of myself]8 L% b- M2 u6 D, U) c9 P! I7 ?
[# Y6 g+ @8 Y! Q9 ?( q
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)
3 U+ n+ o1 L3 O; _6 [! P+ h/ Mset j4 a4 E& ]) I$ e2 l1 P
( j + 1)
5 g0 J/ ^2 r/ v7 g( m) Y1 K; o
]1 m# p0 Q0 _- m3 C
let k 3# \# W8 a4 W+ I% M$ ^
let power 0
" C& l1 s/ X- }' ?* i) |( G* Tlet local 0
1 f/ K  i/ y% C. ~! W) O, dwhile [k <[trade-record-one-len] of myself]
1 F, e- m! J9 C, w- f1 d0 P[
# i8 c2 G  c0 [6 @, {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) " R5 \: g. }) {% k" a
set k (k + 1)
2 [& k2 q- e2 L" m1 o]8 _9 B+ A5 `( K: z/ n
set [local-reputation] of myself (local)
# F' C# y3 C4 G0 f! \end: G$ J, R3 ?( N( P

7 G- e5 j; v6 V) fto update-neighbor-total7 i! g3 {& J, N" @, c; n

+ ], N% y9 L5 ^2 [7 {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 U1 I- J* v4 v" I8 c; ~2 a9 N* N
3 S# A! X9 ~# A" T1 Y7 B
end0 }& Z4 n$ ^, H0 J: c7 Q* g5 o
6 Y. d8 k2 s( X
to update-credibility-ijl 7 d7 E+ J# A1 G+ E

0 m7 S! M7 A) C;;
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。* H3 z" m5 g' q; _
let l 0
7 I: v! t) s! j# e  awhile[ l < people ]7 w6 i4 c' y$ P- J: y
;;
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3 j- u" D1 g3 W) k0 M
[
% s7 V( E% C' e+ p* ~let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ P" s  z% L$ l2 `- Bif (trade-record-one-j-l-len > 3)
( H& a+ C9 e: ]% ~) o[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  {- G  k, v. k# A- K" Z5 \
let i 3
& N% _3 l: ^6 G2 ]let sum-time 0
+ ^6 h$ J# q! h  ^1 I" xwhile[i < trade-record-one-len]4 g" U2 }& b/ B9 m
[: n' o4 A1 |) w# t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 I- f* p+ s) {/ X2 g4 N* k
set i
) B4 k8 k/ H7 s# A1 v  T, _( i + 1)

+ R  X2 k, c& t' K]3 d- O+ h; N+ T" w' u
let credibility-i-j-l 0
9 x0 I. M3 d) Y) J/ ]# H8 J! P;;i
评价(jjl的评价)5 C9 \* c, s" n2 q& Q' w; i" H& M, Y) ^& m
let j 3, ^( v4 [0 |; T, a& |: s! _
let k 4
3 a, `# X! C! S% V. Rwhile[j < trade-record-one-len]
: v2 B8 l5 J5 a4 E" c[0 r2 p2 G# u0 c2 s6 f" `7 T
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
0 P9 R& k; H: q8 [6 Bset 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)! c- l/ l9 `8 t/ x" S: C
set j7 N4 N9 g: X% D$ y8 |& l& S
( j + 1)
% ]: L2 E$ F( `# R# T  y7 e# P
]
: M6 c; r% E- Y% }4 |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 )), |% w) O0 H$ O" v/ s* s$ k

3 T7 R+ u; r. T: y2 l$ ~/ i
2 A6 g6 v9 ?6 x% S$ b+ ~% ^* f
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 A% X# Q# x5 J  Q# z  y1 S;;
及时更新il的评价质量的评价# s" y9 q' B4 \8 b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ P1 x" B2 Z/ U% e, {/ `7 d2 ~' xset l (l + 1)0 l( s3 u: d, T, z6 h& J) H
], T4 f! \0 V! E& \, ?1 w% R
end4 |& C# v; e# }6 i- O

4 h! L5 k+ Z3 \% zto update-credibility-list
' A- s$ c1 ]  C" V8 Glet i 0
+ ~& K8 d1 |7 M- \/ Gwhile[i < people]4 q& P7 m' B5 |5 {1 l( k7 i
[
% Q) y4 h! ?. d: Blet j 06 u0 M5 W$ I% J6 A/ N4 B' {1 C4 x7 Q( `
let note 0/ G# L7 ]2 F# f" l
let k 0' i9 K4 f/ L+ |! }
;;
计作出过评价的邻居节点的数目( y  x0 x" N- u. z" t. a
while[j < people]4 S1 H: h, ~. Y$ |9 N' j! R
[2 ?  P4 e% z/ x
if (item j( [credibility] of turtle (i + 1)) != -1)
& X1 ^  N7 g! {;;
判断是否给本turtle的评价质量做出过评价的节点3 L6 b/ O3 F" H( f$ _7 ~: r
[set note (note + item j ([credibility]of turtle (i + 1)))
+ J5 x" B* y+ C, D) H6 `7 B;;*(exp (-(people - 2)))/(people - 2))]
7 @# h$ o/ @& x3 M; U
set k (k + 1)
. N; B& V) D  M: f6 c]: t8 O8 J7 ^: g' s& h" P" d5 E
set j (j + 1)
' n. Q( D* t: t2 t]/ c' B3 t( d! A: J; n1 d# B5 |
set note (note *(exp (- (1 / k)))/ k)
. ]$ D6 V4 D3 D" r: a+ G/ Iset credibility-list (replace-item i credibility-list note)8 ^* Z3 g1 V9 j( K8 n! c
set i (i + 1)
/ A, \( I# w% j' e, e+ ~]2 \, q0 ?5 s1 Z2 U' N4 V
end
. o1 f3 ?! I3 @& N1 u
; h4 ?+ Z, w+ H" Y3 }. [9 h2 wto update-global-reputation-list
* Q& B3 d& y" L! S6 X1 l1 klet j 0
$ _% g5 O5 p) d! {- H6 a/ hwhile[j < people]$ i  u! y# ^2 h9 I
[9 A5 w6 D8 j1 M* K
let new 0' \+ ?! Z! [( {) s
;;
暂存新的一个全局声誉
4 F, u+ s5 C! N. o  h6 ^9 A- Clet i 0
! j" o# `; R1 T, mlet sum-money 01 Z& A1 u$ \/ c4 l" H4 i2 j7 U  s
let credibility-money 0
& E1 h$ R7 q. \0 [6 twhile [i < people]3 a" m* |5 u( o$ e' x- h
[( r9 s- q* ~, }* s
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ s% X' }. i+ W! r0 N; ]
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* \, ?% g9 P/ O. [set i (i + 1)3 V9 R( J: a/ N' S1 j( z
]  G1 z! i0 h$ Q
let k 0; m8 B" T/ {5 m( Z
let new1 0
/ d: q. Y$ d* v& ?8 Q: jwhile [k < people]. L; l8 H' m# O  r, I
[! W/ m3 g: F, n2 }  E; w( p
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); `6 W/ q: Q2 `) ~* Q
set k (k + 1)
. D* y4 B8 x! _; _' d]- p6 n1 T/ N3 C: C- s8 u
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 t% S! u. T( K+ R; _
set global-reputation-list (replace-item j global-reputation-list new)3 l8 K6 `9 e( f* @. G0 H
set j (j + 1)
9 W3 O: K. ~/ g" `# z3 P]* _4 w- t" d6 x: m
end
% C, c# _( ]4 a; J
4 {( X8 c) L2 ]# b8 J+ M6 H2 d6 Z+ C; u' r' s2 _2 [7 X
+ r# `+ h+ e) W+ W' k
to get-color/ t% I0 D, ~4 D: Q( S. ]3 n

. Z# x+ h  O/ O2 f$ g0 O: Jset color blue

$ V; S5 B; {6 _+ U: `; Z  P* Uend
' o. o# ?) x5 T8 l8 _, A
3 N9 u, z& k+ j3 u' `* r; Zto poll-class
  c$ o/ ?# ?; Send
$ Z0 K8 `4 N, ~+ K% F9 P1 t
9 u  C. L" |4 h# F: wto setup-plot1
6 r4 c2 x3 \- b7 U6 |, G& l& K& d% Y( F3 P( ]: M
set-current-plot "Trends-of-Local-reputation"

! R- C- I" z; i4 o% s
' m; A7 j6 v8 |- H+ M9 Oset-plot-x-range 0 xmax

* ?" B4 o1 l1 R4 J% J1 g: P/ n# w7 y( C2 T1 I$ r) A7 i2 ~2 l+ m" x  \
set-plot-y-range 0.0 ymax

6 ^4 a6 G0 S8 @end
6 U4 E; @& B* o- Z
# ~0 `; h5 R9 \8 q" t5 s/ |to setup-plot2
+ ?8 s8 f0 k4 Q" N( ?1 M2 }$ d$ H' R4 y9 k" p( ]1 T6 h$ A7 H
set-current-plot "Trends-of-global-reputation"

2 D  U: }1 Q: L2 N! ^. m; J& t4 f' T9 f6 D. N$ G
set-plot-x-range 0 xmax

  R- L* k3 ~  K9 O* @4 F# x# h6 Y1 L+ ~- L7 P3 k' e7 z3 Q
set-plot-y-range 0.0 ymax

7 e" E7 T% v! @- V0 H+ z% Oend
  X  t9 R' _/ A$ P) ~
1 o, L& ?) {- M& Xto setup-plot38 J& F5 N8 I1 t7 R: b

- Z; J# {$ V/ V2 x8 mset-current-plot "Trends-of-credibility"
1 `1 Y& r% \! j
1 x8 E3 I  t( i0 v3 K/ [; C: U
set-plot-x-range 0 xmax
1 x& z  z# w: Q/ q: I( E

* v6 ~& h$ c. T/ r  u7 _set-plot-y-range 0.0 ymax
9 r6 d# y1 j6 _- p) f
end
  y7 ]  S/ [1 j5 }1 T
  S8 \- b; V# B% |, Z& Q2 ^; Vto do-plots
) u5 A$ e7 R" S; K0 Eset-current-plot "Trends-of-Local-reputation"& G, N$ C+ I; G8 t2 Z
set-current-plot-pen "Honest service"9 o# V7 f$ y2 I' u8 M5 x0 Q: J
end
' Q0 o; [* J* ]# V' C( f
6 [+ a8 v0 R+ u6 ^% e9 d. Y& |[ 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./ |3 q+ S# K9 W6 f

  o& C5 E$ z8 a' z1 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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