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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:
8 [  T" n: i2 ^to do-business
& Q; [9 Y6 e6 [2 F  I1 o+ y rt random 3601 d% u) J. ~* A( b
fd 1
  ]+ ?8 O/ a' l; W+ O ifelse(other turtles-here != nobody)[) \* v: ?! x: J7 _; ]2 f; k
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题./ x/ J( g' x5 |/ ^. m# x
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& y1 \+ a3 L" W, S1 x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 D0 X9 P) T- t1 K% o) `
   set [trade-record-one-len] of self length [trade-record-one] of self
# y0 ^1 X: G8 V   set trade-record-current( list (timer) (random money-upper-limit))
  o6 ]0 o) d" i( X0 [1 s3 N' n) Q# A" l& }9 ?, \( ?3 f" [
问题的提示如下:
7 V; p* x3 A) {' d/ I
  |9 c  E, ^2 v3 p! ]: P/ Verror while turtle 50 running OF in procedure DO-BUSINESS: @. `$ }' L1 X7 T) f
  called by procedure GO' m7 R1 T( |# O' F1 x2 V$ V3 z. J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* D$ Y7 ?3 b( b0 M" t* P) y; k
(halted running of go)
/ r. o0 e1 d/ k% E( i; @$ f0 O* ]) N- W! l. y1 J4 _/ 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~~
' K/ Y3 z5 N4 r! J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
1 r* f4 f8 ^7 k1 P4 w1 ~globals[3 E+ }' y5 G! r. J: K& ^9 e
xmax
% g* {" f9 B1 U4 hymax
3 h8 W* J' z' I( gglobal-reputation-list$ a- |0 E" @* p
. A+ @; u' h% X# o
;;
每一个turtle的全局声誉都存在此LIST: P2 [! k! C! M+ |( |- U
credibility-list9 k4 V: w2 V$ h) a" ]9 O( i3 [( D$ e7 A( s
;;
每一个turtle的评价可信度9 Y9 N2 q  d5 O3 c6 K
honest-service: y' e7 x" t; D+ M  o
unhonest-service
' Y1 p3 t# V- y  ?6 i1 U1 G8 Hoscillation# w2 R- K0 u7 p* ^" I
rand-dynamic$ j; ^2 T& h4 d
]5 X# W, F+ C$ c4 f- X8 ?: J

+ i5 T/ F/ ^; O% y* Sturtles-own[
& M! m9 u4 g3 U1 U% n. Q1 L; otrade-record-all9 ]  _  ~4 J: x: Q" P$ e5 b6 S
;;a list of lists,
trade-record-one组成
+ K) l4 ]' E$ Y; I6 Y$ N( ktrade-record-one
  v4 w% z1 F" B;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ A% I+ {" [  P6 S' ~
$ R( C3 s2 ?4 g! x! K' \1 w, I;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
2 ~0 u- i+ s3 u5 C, b/ R9 o0 [5 Ytrade-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]
+ B% V, N9 d$ b' qcredibility-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# N* I5 m/ ?" j$ }6 T1 `( q
neighbor-total$ q3 B; P( k, \% r# I6 Q. i
;;
记录该turtle的邻居节点的数目% y8 s3 \9 E/ [2 F( s( c* T7 Y
trade-time9 O& J1 v* A7 Z" k' i
;;
当前发生交易的turtle的交易时间
# C7 M6 H3 m, z' F, H: v4 a5 [appraise-give% h* ^  j: L1 L! D
;;
当前发生交易时给出的评价8 n1 J  c. Z8 H
appraise-receive
6 ?; O4 n% E3 @; w3 w8 ];;
当前发生交易时收到的评价( P. @; `5 ^" [$ [* e; U
appraise-time3 A3 d4 d4 G% r
;;
当前发生交易时的评价时间% `6 F1 R; X7 p( M& V* s) W& K4 X
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ U5 b) R  }% b3 c- b$ o
trade-times-total
3 k# l- D* o1 g' J0 a# ?" w. G;;
与当前turtle的交易总次数
/ }/ n: j8 T  A$ b$ ]trade-money-total
. U' k6 D5 C& U1 ?;;
与当前turtle的交易总金额
8 y* i7 b( L" \6 G  Slocal-reputation' k. J% V! D3 f8 M, d1 n" R1 r
global-reputation
: I) U  g  Y! d  Ccredibility
) K8 C" q6 }8 `5 Z) Z* g( ~;;
评价可信度,每次交易后都需要更新2 x9 U; P2 j  l6 w7 y1 y' Y
credibility-all7 N0 K* R7 @* l1 R3 ]
;;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
& ]( w% J, ]; S3 f9 g( Q% c
+ K; j, `$ m5 W& F9 m# };;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% W, |' d6 ~; U% T/ ~5 d5 Y
credibility-one
6 U" O+ O4 i5 q5 j;;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people6 G  A  I  i8 X9 u) `) w9 A+ K
global-proportion
' ]. c" Z* ]& [0 ]; ]& r( w$ Rcustomer8 k! n3 O+ R9 K' h
customer-no
) _* l2 k* @+ _trust-ok! f1 p" ?0 C' ~9 X
trade-record-one-len;;trade-record-one的长度; i' c) \1 G, V9 B
]. O$ Q5 ]. ^. Q* N& N
% c9 K0 [5 M( g
;;setup procedure
. Q# R: v/ A) Z5 P: l# V  @1 j; W4 k& Y6 Z8 V& e& u
to setup
6 V% f6 ^1 G' _% ]# @7 S: o  Z& Z5 N  {' s' S
ca
" I$ O+ c; i: q7 B" y

  H; A5 N# L8 v; y" a0 }initialize-settings

; m5 `: ?2 F& m8 d& Q
) ^  R( C* S. M* o1 J) gcrt people [setup-turtles]
7 U4 q9 C( B8 o# M' N  K+ E

- q7 F6 R3 I- i& G) ~( dreset-timer
/ I: s/ S$ F; M7 H6 h; X6 J
6 u' O5 [. G& S6 ?5 t$ C2 O
poll-class
$ r0 a" O8 m  b$ c9 q; |4 R. D

2 |% s. m& a0 W7 @setup-plots
1 ~4 U/ A) {# y5 j6 d

( G/ ]8 t( s9 `& }. e* Cdo-plots

' Y  [6 T3 a7 Z$ Y& U' [+ P9 bend. y( y+ G) J7 l& D. q
+ M3 B: A; h; W( h4 A
to initialize-settings
+ Z/ m6 i+ G; a& y
) i' B( |: ]% `) l5 {set global-reputation-list []
8 o: Z* n# i, @) i! A' }; l2 J1 y/ X
; o) D( R% g& j- U7 o% ^
set credibility-list n-values people [0.5]

; x0 m( y4 i# W/ k) Z' ]7 x" [3 \; n" Z8 H7 O, R( L5 m
set honest-service 0

- D0 Q/ K1 G4 U( b1 [6 e9 w' @. B5 a: d% n5 s
set unhonest-service 0
0 s) \/ U( p  r( a# }
* g. Y# H+ s- y- T* a
set oscillation 0

" h# \  @2 O: D! i" X5 x4 k! L2 s$ i8 A. Z8 m7 _! e
set rand-dynamic 0

: X4 l3 j/ `9 L, a$ Pend" ]: G5 o, |- m* s! f

' Q& z9 a% O. Z9 l6 `  Mto setup-turtles , K& V# @' c1 d& W8 C( N
set shape "person"% `: s: C) [8 H& |
setxy random-xcor random-ycor
7 k4 Y; P% J* e/ Nset trade-record-one []0 d+ @1 T" j$ t, ]

' A2 R8 h4 B, H' R+ O0 ^- Fset trade-record-all n-values people [(list (? + 1) 0 0)] & ]) d, D9 y) z2 }! y: t
- {3 H# E- e" r  @
set trade-record-current []
5 Y9 [- y( Y# L$ ^' K+ q# l; R, Iset credibility-receive []
, z% U; O) D- [8 w. j" {set local-reputation 0.5
! I; U% Q7 w: r5 B1 ~set neighbor-total 0
% G2 D0 Q6 ?) q# v/ y/ h& }% ~set trade-times-total 0
; B9 u- }0 ?8 j% kset trade-money-total 0( z& a4 {0 A; _2 m& ]0 Y3 V2 Z3 D% Z
set customer nobody
4 L& z4 z7 C. S# {set credibility-all n-values people [creat-credibility]8 y' ]% F& l2 d, Z- v% ]
set credibility n-values people [-1]( |$ m  W/ f- e# O0 U
get-color
# k5 L! R' V( R7 \9 J9 o/ m
6 R# y& |" d' ~
end
0 c: ?3 r, H8 s" |2 i! |
) B: x/ T8 q, R) E1 o  B$ K; h* \, wto-report creat-credibility
4 H! o3 {3 {8 m3 ^+ Z% `report n-values people [0.5]
' c2 ?+ h% `' J1 k3 A6 f' Z( Zend0 U0 _, e: a4 ?6 l1 I8 r
, N! ]" B5 i2 \" @* g7 m8 I+ {! }
to setup-plots: \5 v- h3 w# f
, ?# m/ c! y8 H6 n  o& c
set xmax 30
7 O$ B9 s  b0 l9 F- u4 G
+ t) T; ^! l+ {1 N! b: `
set ymax 1.0

, O+ p( G* E) \3 w, \2 V# Q
! u4 G5 Z6 Q& g; W* I- ~. c+ S/ Wclear-all-plots
6 e: X# U( a# Q! u: s4 t: U

. F: F2 J/ q9 {9 t1 _/ U6 X" }setup-plot1
  k7 k: v9 c" ?. z; Z* G
  u$ c+ k2 |6 I5 y
setup-plot2
/ N- L3 j: S/ t" s4 _% A" ]

/ y: E( |- N+ f/ A+ R" C- Qsetup-plot3
9 ^, `" E' |4 H: R
end, G& B2 X  b) K  Y( @

5 Q4 d) M: G  v* n;;run time procedures
9 {9 H$ O; m2 t3 [$ [% ~4 t' S* e& e$ V3 W0 B
to go, b9 l! u/ E, l( Q! m( E8 \4 t
( O) h! Y9 k' H$ B; Q
ask turtles [do-business]
1 S9 h( U7 x9 f+ f/ D
end
- @. h( h8 W7 t# Y  k% u
) `: d; E* d; _$ d  Zto do-business
( O5 b4 \5 i) |6 s) y( H
2 ^2 b, j& G: E0 y0 C
- D4 u5 H$ I' |4 N# o; R
rt random 360

6 b! r" V+ Z( ~" O$ c9 u( C
  ?) N# @( n) u2 Z7 q/ Kfd 1

& o9 b3 W+ o) G. D& j; V: R0 M$ n5 @1 V. l: S
ifelse(other turtles-here != nobody)[
: F! q* P$ \/ @$ x- G
6 k' m# x6 B& {
set customer one-of other turtles-here
9 p( {" m2 A! F5 b9 o
; I* W+ f9 Y# {0 [5 g
;; set [customer] of customer myself

, F, D; H1 @8 Z' C, d# z; F) v6 l9 A  E* _9 {
set [trade-record-one] of self item (([who] of customer) - 1)4 }" n  n7 N  ]- {* o: ~8 |5 U
[trade-record-all]of self% X1 e+ v, F. S( {0 R  U& m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 y8 m: ~0 W  k  f/ [
" u9 W% W' M9 M2 E6 tset [trade-record-one] of customer item (([who] of self) - 1)
+ d" T, D  [6 x# `[trade-record-all]of customer
' i  x  q, I1 W& j& v
" }! L! l" v4 R2 `
set [trade-record-one-len] of self length [trade-record-one] of self

1 e! R1 G  g, h) I9 G) ]4 A- z3 h
0 Q- X7 S: d1 t" I- Bset trade-record-current( list (timer) (random money-upper-limit))
* z! _$ V. `5 q' n
! q' D; ?% E; t  v6 U% U
ask self [do-trust]
& O3 ?/ m  m+ v$ o;;
先求ij的信任度5 P9 ?+ c7 F; E) d3 @& k
1 L# x. q7 H& g8 h+ ?/ Q
if ([trust-ok] of self)
* V/ s# ^! t9 `;;
根据ij的信任度来决定是否与j进行交易[5 O1 e0 I7 ]' l8 V) l3 y- z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 D6 l$ B5 z! V3 p/ f8 C2 I  k, ~8 l
, k% R; |1 z- }# C5 R# r
[
2 \6 B8 o% A- F7 p1 t/ ^, E6 z5 G: e7 a
7 ^: Y  G1 E7 l
do-trade

7 P4 v. H3 o. ~
; R1 B0 d. x+ Q! h2 ?update-credibility-ijl
6 I2 t1 Z2 w# M+ o
( A; Y6 ^3 f# Y: L2 h% l% M9 o8 l
update-credibility-list* E, D- O& R! `

1 n$ ^6 N/ A% u/ c
4 k& ~2 Z+ T! ]; Aupdate-global-reputation-list

- C) A/ q/ ~% C' z  O- W0 M) X1 |: b$ q9 b' u
poll-class

, k: [; r: c$ z3 a& v' V# p2 B2 n9 Y" G  Q& G
get-color
& _8 K( a9 E& l; W+ H
; r* w0 t, p" f/ Y- o0 q* ?! y$ {
]]
' {+ q( c: J+ [
/ I$ V! D6 V$ w& v; ~) r& g;;
如果所得的信任度满足条件,则进行交易8 Z7 ?9 `+ r. }
' c% Q7 h5 W9 ?& e6 l* d: W
[
' P1 b9 H( ?5 b. _
0 Y- {  N; e/ n/ E; W1 B1 W- w
rt random 360

9 F& q/ x" T6 x; f2 n+ |" T4 W5 u9 {7 @. [% _
fd 1

5 L4 z: R2 u8 N5 k) B! n7 Q
$ O, Q1 z" H: c]

0 b) b7 E3 A' s8 g1 D0 {5 @
! o: f. [' w5 f( ?  E4 Send
, ]! a& ?1 W/ P/ a2 d8 Z

' r! a# ]* @- G+ E, f/ X8 ito do-trust $ ?9 [# {+ ~4 L
set trust-ok False; s4 q1 N0 N! ?5 b. t) S* C. K
* X* Q( i7 ^0 `

: B9 U! Q8 T: D5 D1 z0 s8 Rlet max-trade-times 0
8 E" v3 o) s- @0 O( wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 Y1 Q. m' C" H: O' A' W) R! Qlet max-trade-money 01 V5 w' t# n( [3 {
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 ~; T4 P$ R8 U9 N/ F  f9 rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! d; m  I4 T7 j
& K! l, W* v7 o$ \# n+ a

. t1 o, q/ Y5 Zget-global-proportion8 H, |2 ^0 x% D9 g
let trust-value
4 L& Q( A8 u1 k9 v7 t" Dlocal-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 Q. v$ X2 A1 D( ?if(trust-value > trade-trust-value). d" a* M- ^$ {& t5 N& M
[set trust-ok true]
# l# }/ t0 ?% Q0 U% uend. ]# U4 w( k5 \# a) ]- @
( k3 C& k( G6 Z  t! |0 w
to get-global-proportion; {, c" y, T3 x% V5 T1 }2 X
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! l4 `5 q5 t6 ]
[set global-proportion 0], @0 C: S8 _; |6 Z
[let i 0: M1 w! }5 S8 L5 k
let sum-money 0
" m8 X( }) T: y; b! O6 M% awhile[ i < people]
3 L' p1 M7 b: |9 M, P+ x: U3 S0 Q[2 ]" X5 ^  |0 C: B6 G% Y# z! p# I3 f# s
if( length (item i2 v- o$ d$ }2 R  Z& d
[trade-record-all] of customer) > 3 )

& a. m& B$ E/ @- C! e$ o[8 E2 i. q( D( V2 d2 P6 D
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, O3 e) U. i& v$ b* a1 Z1 l( D' e]! w$ x% x9 s# o* L, o, l0 _  V: H
]1 Z$ U7 ]! Y0 x- L7 o
let j 0
# v2 r3 D3 o; T, H& alet note 01 I, G6 Z8 d5 O5 ^# j5 x* A$ x  E
while[ j < people]
4 B  x0 t$ F4 z# i% b0 {! `6 E$ t) x[
! F8 M; J4 D5 }* z* v8 l5 K+ Bif( length (item i5 B6 ]7 t6 G, V  P6 p
[trade-record-all] of customer) > 3 )
6 T% D8 U6 }! n. \; I* }$ b
[
  G. o8 M1 e# d  X5 k  S1 Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 F- G) t) c% y2 t" \[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 _1 L/ ~0 g; `, k' d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- E7 t" y3 j7 V8 T
]2 \9 o$ T" q! b# r: C8 A7 F& U
]9 ?( c& h& N+ V, J, L
set global-proportion note
7 Q0 C! @6 I$ P& `( v]5 G2 A( p+ g# _1 o
end
( e$ N3 e4 u7 x4 d
5 [+ P6 A0 t1 y9 I7 X3 u+ S. h' y! `to do-trade
  h: l+ W$ V* ~; W;;
这个过程实际上是给双方作出评价的过程- p2 n0 T5 d7 S* f' G$ @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' j  N: T# L2 H1 w) G& ?- C- Y& D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 a0 U8 d' g, w( P. g' w# rset trade-record-current lput(timer) trade-record-current
; T( M, K/ }: k0 D;;
评价时间9 T8 n) t( U& o
ask myself [
6 r0 I" |  @5 [update-local-reputation1 v6 }  g1 N( H1 s; v
set trade-record-current lput([local-reputation] of myself) trade-record-current
! V  P0 z1 o* i3 B1 D]7 Q' i7 B9 ~6 _+ O0 i. A& s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ A: O$ L" N  b) t/ E) ?% O  ~4 u( ~
;;
将此次交易的记录加入到trade-record-one
( U- J( w% l" aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ ~+ s  g1 E# `: Z0 f* N
let note (item 2 trade-record-current )
  V  w, C( C) A  ]+ e" @set trade-record-current$ V% e7 ?1 F# z# v# c
(replace-item 2 trade-record-current (item 3 trade-record-current))

' e" W9 W8 S9 Cset trade-record-current
3 {+ N/ E/ R6 [. R5 B(replace-item 3 trade-record-current note)
0 }" P0 m! w0 G* b9 N) r* h% i8 g+ x: M; Y. y: V) j( P! s. n/ U# F/ Q
5 t% k! v. v& o+ f& ~5 d6 [- V
ask customer [* L5 ]4 g1 r. [4 e9 W% h, G4 \
update-local-reputation
; ?# B% a% c4 C1 _; Fset trade-record-current! ?6 y9 M+ e# i) R$ d! g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: e. x/ Z4 ?. Y7 g
]% W( u- Z! I% e

6 _" p4 B$ g/ q
$ j; r1 A) I& J: U0 ?# {  [9 `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 Q( }' L: @, H! |8 U# l
2 j% y" u7 w0 m) X+ B+ ~4 W
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# S' a7 R5 l& g. K6 ^
;;
将此次交易的记录加入到customertrade-record-all
* b5 N. b6 t4 i- e$ K5 Send2 i* {; Q$ P* |) i# c9 ^) v
4 K2 I# B/ J, t3 M. n, _) g& ~. \
to update-local-reputation
! N$ Q1 h( M, {/ V1 Eset [trade-record-one-len] of myself length [trade-record-one] of myself: R  d. Y1 K3 i& |9 A/ }% r
3 r8 n2 n7 Z" D3 N2 x6 ^

; v7 R( D6 P+ E" T- C2 F;;if [trade-record-one-len] of myself > 3
0 ]8 F, ]0 S+ I4 e
update-neighbor-total
, _0 F: Y- y9 U: o' i( W;;
更新邻居节点的数目,在此进行* {8 W8 y% b- i3 M" `1 K8 N
let i 3
/ l2 {5 S; C7 d6 flet sum-time 0
% c+ i; Q) B4 O8 _while[i < [trade-record-one-len] of myself]
) M* f# q  L! {- n[& I) l5 O% E  a8 X
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! I# J! T8 z/ _( G4 g$ K
set i
/ h; M3 N( r# c; I! S+ k8 M- Y( i + 1)
9 V( K  G# Q, v
]
% `1 T) `0 O7 z# v5 U* Alet j 3( Y- x0 f7 ?& v- q8 J% c3 ]6 q& _
let sum-money 0
8 w4 O, x! ?$ T8 w; y5 r. }2 s0 iwhile[j < [trade-record-one-len] of myself]
! Q' V) r$ `1 A4 {" b5 ]# J[) ?& R$ t& X6 w" b% T& E
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)& h% T- {1 B( g  p
set j
+ |; e5 \0 g$ |: m( j + 1)

' }3 e0 ]6 Y$ Y* Q]
1 u& n1 n6 ?! r/ ~- o' rlet k 3
. g  r* e8 s% O% E) p  Hlet power 0$ O! Q$ l" x$ s
let local 0
9 o% F; u: D, N" ^4 qwhile [k <[trade-record-one-len] of myself]
- K! z+ D3 m/ x+ `[
! N% s2 I7 G( Y# _/ @4 @) g5 Pset 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) ; H' N' m. ~4 U$ \
set k (k + 1)% M& v- H1 y2 s- t4 ]- ~- z3 y3 V4 I
]9 J4 p6 D7 b/ [  r
set [local-reputation] of myself (local)
4 q7 L/ ?7 g( i0 lend/ D9 L; e6 z1 m+ k7 c

2 L: `+ m) t9 \$ H7 v: _( C  Vto update-neighbor-total
, A" E$ {8 w" L) O; S3 D& A9 [: y/ g3 `6 j- T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( Q% C$ z6 B; f3 ^+ j: O
. ]; ?7 E3 B9 r4 l, g' ^; ^0 v  f

/ Z) M) y$ e. M) @; \. m7 Rend
) @' ^: `. Z/ I/ E$ e
* b& x  Z' B+ }( T& i) |, L/ N  Nto update-credibility-ijl & {' y! c  P) ]; m& I  H3 D

, S/ j, H/ Q" `0 F* K;;
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。) d* ^" x( Y" M% m, ^' ?
let l 0
. K' K& R0 y" d& A) v8 c, qwhile[ l < people ]
+ ?* o" ]! s9 c: W5 T- d;;
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 |9 t) _/ O! L' W[
, f0 ^: \$ l0 J% qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)! Y8 f2 t" j2 G4 Q2 t9 E' i
if (trade-record-one-j-l-len > 3)
. l# D9 w5 A* U[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
) `+ s: }1 Y2 d$ \; zlet i 3
# u0 c6 k* `" j3 {6 Olet sum-time 0) ]. s4 M% d& L
while[i < trade-record-one-len]9 L, y4 i0 F- B* p
[* `1 ]0 y! \0 a9 k  D9 C; A
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ H2 A: b$ @# j, Kset i2 P; v9 _+ Z: F5 \# D5 i
( i + 1)

0 M1 T4 K$ X2 S  `) q; \2 q1 S]; W$ ?8 U" C7 H0 C9 g$ G
let credibility-i-j-l 0
. e# V( r' `8 l! H6 Y; w- T6 t8 [. ~;;i
评价(jjl的评价)
. W# k. U/ `# Blet j 3  p* l& x, O8 t6 ~0 c9 s
let k 4, A, \# U2 y3 L/ n& I5 v
while[j < trade-record-one-len]
' [) B2 E, `8 S9 O[' [3 \' Z, a9 O  [. R# _) P. ]5 e
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; p7 \! {( l# s
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)
+ K9 x% F4 Z7 A8 `0 n/ nset j. _/ A' u# K; q
( j + 1)
) m% D) g2 J2 P( m6 B, m
]
' m; K! o. f2 O5 `% Kset [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 ))
$ k% R1 D7 g* v5 X+ ]  Q/ _" @
3 u  B$ z8 i! {3 |& C& [. e9 P0 H

3 r  v3 q7 s/ Y% u! ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). c: q+ Q) Y, ^. I0 L) g: f
;;
及时更新il的评价质量的评价
: m: U/ m% g0 r$ o( K1 ?set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( C+ _: y' r7 yset l (l + 1)+ j' v2 M1 R0 y# `2 S
]
* o$ F4 Q' v2 s, t3 Y" aend! j; s+ _2 L$ I

* l' @0 B5 Q8 w) fto update-credibility-list
/ y. z4 p( |3 N1 G5 Ylet i 03 b$ x0 A  R8 b. p
while[i < people]
, e2 R# T4 k) R$ g) a# ^6 C2 K5 h[, V: c, h3 X. Z( G
let j 01 E, e  e% I& e- z% r9 G2 h
let note 0
6 ?) ]. D+ C  Q9 ulet k 0: T" C) k* R# I8 {2 b
;;
计作出过评价的邻居节点的数目
* o3 K( d+ E) pwhile[j < people]4 n7 P- h$ R- q: s; Y9 U4 c! i
[* u6 W- X& A  a5 n# ]# D
if (item j( [credibility] of turtle (i + 1)) != -1), ^5 b1 l, J  b/ A
;;
判断是否给本turtle的评价质量做出过评价的节点
2 |) c5 N2 k6 W# o$ v, l[set note (note + item j ([credibility]of turtle (i + 1)))
0 c) B( z7 T  {$ t+ j; o) {;;*(exp (-(people - 2)))/(people - 2))]

$ o: D. S- m2 g: N9 k/ zset k (k + 1)- ?: d! p: G" B0 ^. T/ K
]
+ s' |" I  M! B2 \( E1 y/ }9 \set j (j + 1)! a# _" J* O# b" T4 ~- |1 _1 F* Y+ S8 D
]
  Z, V8 E5 n. v9 gset note (note *(exp (- (1 / k)))/ k)2 |. q! B/ Z9 L$ P
set credibility-list (replace-item i credibility-list note)
' n2 t3 J0 @4 jset i (i + 1)
. W4 v5 E3 e* _1 [5 V  ~3 C- Q6 c]
1 @0 w! d. u. w4 J8 r9 nend
5 X% p: m4 m0 ]
: M: p- H  e' ^; [+ }to update-global-reputation-list
" q/ E6 Q$ H  D$ flet j 0
, f9 b. l- b; c1 Swhile[j < people]
$ t6 q5 b/ S( ^' e8 m/ k8 X  F[
9 w" V7 B# I5 I; W& {let new 0( U; `0 a+ z& g4 \! }1 c% ?
;;
暂存新的一个全局声誉
" u/ e! t5 B- x! i: I! r  _- G3 dlet i 0  s  _  Q/ D2 t) q$ X2 ]
let sum-money 00 I, S8 i4 m$ D+ w' R
let credibility-money 0/ |1 P" L* J' O$ X
while [i < people]1 k8 u7 J8 C& `" `  W, y
[; m0 B% J$ c& y4 A) n) ^! P8 q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 C" o/ y! h+ u, X/ ^) \set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% V+ P# V: f& }1 `3 Nset i (i + 1)/ ]. ^: V( G+ K. I
]- i- `# }' O; O% E( r
let k 0
! L6 f; s6 N* z( C9 a( olet new1 0
; h7 O$ ?/ C, S- Vwhile [k < people]
: K* O. l; H2 T8 j' A" ~[6 G( T$ G5 S3 P6 ~1 S4 C5 d
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)4 D# ]' V5 z' W7 }! N6 c0 C$ b
set k (k + 1)
/ i; g, f: R, }" f' G1 e]3 A/ m5 b( P5 p6 Y5 ^9 u
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - K+ Q0 Q8 S! i' B# N; M4 l3 C% n, l
set global-reputation-list (replace-item j global-reputation-list new)- l+ J1 K$ B0 j  Y
set j (j + 1)8 X. {2 A# K. H) R
]
$ p, L; H$ Q6 w* u7 ^$ vend
# r5 E7 v3 {6 V; [: B' Z; @0 n- [, K! C  f
9 ?; q& E6 l1 ^3 G. Q3 w

' n# t' Z& b2 Lto get-color4 E) ^: E& R! l6 p5 j1 E; M6 {8 ~

0 ]8 m( N; ?7 {2 P; y& [set color blue
2 w8 B+ j9 G! V
end5 ^7 Z  z, A; @3 W4 \

% M# h, |1 n! }# n- X# e3 Vto poll-class
% p( b5 ?4 _5 {6 j) m) qend/ f2 H2 F1 y3 o1 l2 {% E4 ~
3 h5 r, P, S- c3 L0 }  M
to setup-plot17 z, b1 c' Z5 u
  G2 j, n" W. y: v
set-current-plot "Trends-of-Local-reputation"
1 o( r4 ]) @' ?2 V

7 h0 V5 m; p3 @6 ]. X, {set-plot-x-range 0 xmax
; D4 E4 Z$ w+ y% K# I! _+ X4 e4 ]6 y
4 I' q3 \, s& T5 v
set-plot-y-range 0.0 ymax

3 ?9 w% T  r' H/ A0 }6 c: tend
' |2 s" P; A5 R6 @8 a1 x$ q# |, E1 c$ i
to setup-plot2
: O; U4 J8 K' T4 e! e, k! X
. z- o8 d4 r6 |( }  U0 F4 M0 s+ Aset-current-plot "Trends-of-global-reputation"
1 B( O% B: C! X# S

& |( `1 v3 U2 f5 W( h% t3 ^set-plot-x-range 0 xmax
+ L  U6 S& \; M- l" |' X- |" P! x# s
8 ?9 m2 H6 {& Y' ]# y
set-plot-y-range 0.0 ymax
& |# I" y# Z7 }
end
4 H4 e! ^; S6 ^, \- K  K6 g2 g0 e& a6 z, ]2 M9 h4 A8 a
to setup-plot3
5 U8 O3 q, s$ A8 p# E; D
) |' ]. R, |- ^$ m! [- Bset-current-plot "Trends-of-credibility"
7 q& r6 @+ X2 Q9 j; e4 a. Y1 r

4 ]3 o" C, x& U! G- G# H7 w1 w% K0 Yset-plot-x-range 0 xmax

# ^$ O. N! f' b2 f' Y% {+ x2 p
' J& o9 J! `8 G: ?, F+ [4 iset-plot-y-range 0.0 ymax
: P+ |0 \& s; l8 Y# a
end3 V2 @+ e7 l2 p' J1 d

# K2 Z, S2 C+ _to do-plots9 e: R# G4 |' T) W
set-current-plot "Trends-of-Local-reputation"1 i+ \  g5 I" `% z: s+ K9 A0 I& E# E
set-current-plot-pen "Honest service"
' E( Y1 A/ M, M4 Y) Bend
; G4 I( _( v+ {
# Q6 t( ~' [2 L, d% e. S! K) K1 c[ 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.
! z9 w7 ?9 K; `! T  q
. j9 n  T5 \( A, u& _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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