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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:
- E/ ]# k* N5 j; E9 C: p  ]to do-business " \7 M$ ?2 x1 D% H3 ]* K
rt random 360
( L9 V7 d7 k: C6 J$ S# B; E! y& D2 q fd 1
5 v/ H3 p- I- H, W ifelse(other turtles-here != nobody)[
/ z( a/ R& T' d. ?" X  d  p   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.
! Y! w( V; c/ l, H' s7 M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 t3 A; A7 O; A% B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 F1 E2 z$ O: Q9 ?6 V. U1 C) q
   set [trade-record-one-len] of self length [trade-record-one] of self
" _. \: n' y0 f* G; c9 z' l( t# m) s   set trade-record-current( list (timer) (random money-upper-limit))
9 k$ {& \2 }* ~( j! m' o: s8 o
! U8 Z/ ]( r; u# \6 v* r- A问题的提示如下:+ B9 i+ l8 _/ B& W  {1 ?
- D7 M; X( r; T* `  l# E
error while turtle 50 running OF in procedure DO-BUSINESS5 q% p# v4 r: ?1 z! _( r8 [
  called by procedure GO0 c, ^' A' u$ r0 G# v7 ^( W
OF expected input to be a turtle agentset or turtle but got NOBODY instead., `- r/ g! r2 S& r
(halted running of go)) L; M8 h8 n' C6 {/ L
; o) i( l- u8 R4 x! a; r' }& U
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~~
. y$ q6 y- {/ \% s" Y+ @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
" _, x5 j; s2 V  |/ c# g$ G# {! Rglobals[
) C2 k) T* Q9 P$ ~  d0 X+ lxmax
# W- o/ a& ~: r2 V$ Symax
) @4 h) B" g0 N1 V# F, Yglobal-reputation-list3 Q3 a- C/ {* z5 a% D
- @9 ]( g& k1 A* \3 G
;;
每一个turtle的全局声誉都存在此LIST+ M! q- W- e! K. A
credibility-list
) ]  x/ G! p+ o2 }3 s$ ~;;
每一个turtle的评价可信度+ Q7 q7 T5 b+ y
honest-service7 ^5 o2 }- q9 ^3 c. H) X
unhonest-service2 z$ F9 J/ [2 f9 y% P
oscillation6 Q: R3 y& t/ V+ F9 n1 V* n
rand-dynamic. ~: B4 o% d6 [( N, T  t
]  U7 Y# m$ U+ j5 o/ p/ M
2 h5 H5 E- x# C4 m' _0 x- U/ K
turtles-own[  K. l  p0 {0 T; x: R$ c0 h: ^
trade-record-all  C2 J! I( v" P
;;a list of lists,
trade-record-one组成$ u0 E$ @. B6 Q
trade-record-one
$ _; i- W1 k; @5 R3 A2 Y0 {0 Z/ X. w;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录0 R" ^2 X( e5 w, s- R" I
+ M: y( p4 ]- C1 k1 U5 {! V' ^
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
! }/ X/ j, K1 ^6 O* Utrade-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]! R0 u$ l$ K- f/ I
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
% C* l! K/ j( ^2 w" D* |, Vneighbor-total/ I  ]2 [  U& W
;;
记录该turtle的邻居节点的数目
! {; D) n2 j. M4 K. gtrade-time4 s# O' U6 ~4 h" m) ^- l# X
;;
当前发生交易的turtle的交易时间
8 a! |: E2 z' j$ m" E' xappraise-give! c3 B& m$ I( d, j  v+ Z
;;
当前发生交易时给出的评价
. y' q- K0 L, P  Fappraise-receive
( C/ q% d: c# B3 @;;
当前发生交易时收到的评价
! n2 l; J$ \' \; }appraise-time9 v9 ~. m0 X" P, e+ v3 r
;;
当前发生交易时的评价时间
* ]! y5 K% y' tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- E( e8 M1 H3 z! _! ~. Z& f1 Atrade-times-total
: Q8 f: R" ^: W2 A9 C% d, K1 L3 S4 N6 i6 _;;
与当前turtle的交易总次数# T% g1 V+ R( k* |( s1 H, C6 u
trade-money-total
) D: y; y" ?7 E: m) ^- u: V/ L8 D/ ~;;
与当前turtle的交易总金额/ J( H# ~# k' H) T' T0 |
local-reputation
. j) b1 N! Z3 o) Vglobal-reputation
/ q( X# v4 b7 b% X' Q+ _# zcredibility
. o' o$ z& [2 O4 ^;;
评价可信度,每次交易后都需要更新- g6 M( S' z# Q7 d/ u. ^' I
credibility-all* E4 \1 }2 q" E3 E* B
;;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
6 T  P# ^: T0 u% J9 z
, @7 y( v( i- u! V% X;;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
) K2 U$ x* ?3 p; U7 tcredibility-one
. J! e1 X' I% q2 }: B6 g4 D( h, 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people# K# b9 E0 b: A, M) V, u
global-proportion
% M! S  _$ J+ ?3 u. Icustomer# ?! }( W: D$ b( @$ d
customer-no
- N9 V4 Q% }# D7 V0 w  w$ [% [trust-ok
5 l4 q. U/ R/ T  i+ K/ ~4 S& itrade-record-one-len;;trade-record-one的长度
+ M9 q" j/ Q* ]& V/ Q( p4 c$ [- l]
; A4 t+ U$ C9 B) y
  E: X/ ]6 D; l;;setup procedure
* G  g  o" z$ U* ]/ @* t5 V" s4 w; M( v8 S. x
to setup& y' l! G8 w: c, `) M$ V
- B; \" l+ h2 J) I6 ^
ca

. r7 m* u, S1 X7 c( d
1 b, F8 T$ y8 _initialize-settings
9 W9 J: r& R$ k$ ?% K" Z

" X0 \3 ?( A/ a1 t, M  s: Icrt people [setup-turtles]
7 @2 L! l# i5 u. |6 u, N$ x
3 e) _6 Z' G2 l+ _  ^
reset-timer

, J! L( g* {, T% ^
4 _( U! |4 v9 W0 O: O( |5 w% rpoll-class
4 u8 \, I' Q# W3 a; x
: s5 R+ F. a) p
setup-plots

4 u. l0 J) [" {# \# z, q3 Z( d( P! z1 z- ^9 Y4 u! I/ Y/ _  N
do-plots

3 H& E& b% o# I, ~$ J3 g+ {end
3 [' I, m7 j  \9 Y+ ?9 h/ k$ ?$ W
" A. H$ E, t: _$ u; _6 tto initialize-settings+ `$ a- Z( e, `# H) k1 R" N1 m

9 L( [, `' E! C$ e7 ~set global-reputation-list []
' ]" i7 M% l( m

: t6 y4 Q4 p: `; Pset credibility-list n-values people [0.5]

) l+ {5 I$ p/ j2 V$ P) J/ K7 b, P7 U5 g2 a6 S/ y
set honest-service 0
% S: U4 |1 @4 [8 Z6 T

( l+ J8 d9 U  }3 ]8 kset unhonest-service 0
6 C! ]0 Q0 d5 v7 {+ X; ~" W) O7 m
* H& J6 ?! s1 [- u
set oscillation 0
) `" V7 z) w4 D6 w, R
2 }; h, ~: Y5 \+ ?% N8 P
set rand-dynamic 0

4 X4 u5 s. D' xend' {$ |. i% q! r, V/ W6 L2 G

1 X: U4 _! J8 {6 Pto setup-turtles
5 b9 p; i2 S# r. lset shape "person"
$ H3 {- r, `; ^- Asetxy random-xcor random-ycor
1 @1 M6 v' L7 |set trade-record-one []- i$ X, X: {. A" c- P( H
# B$ ]& r7 p6 J
set trade-record-all n-values people [(list (? + 1) 0 0)] - M& C8 @8 @+ l  c" `
  f! g( r+ {' s4 ^
set trade-record-current []
/ T8 K- l# d; n* ?' y. C# ?, G( W  U' sset credibility-receive []' h4 t+ v5 t' @3 B7 ?
set local-reputation 0.5) `  ~/ u- D4 P% S
set neighbor-total 05 ]  f# }4 J* l  v$ v
set trade-times-total 0$ V6 h( ?* u6 H: V+ x2 `' g
set trade-money-total 0
. W# N9 W; C: t- W3 b+ Q8 m! g/ uset customer nobody. M- d8 ~) ^  G) l
set credibility-all n-values people [creat-credibility]) \! i( L7 ~1 v
set credibility n-values people [-1]
2 P& M/ u: i# L( U5 y5 H. ]8 Wget-color
& m" U$ Q; a& F* g& {

, ^& C( c' D/ Y7 J0 lend
) D0 B" G3 \7 J5 l. v, F. k. P* o  N. ]
# U, }& D$ h( v1 fto-report creat-credibility6 w: T: Z& n3 I0 `- a) @2 T2 Q
report n-values people [0.5], S% i% U0 r- ~4 |, Z2 v: P+ o$ e
end! ?2 y+ a; M% h/ |

/ _9 @" z' m9 ?to setup-plots. _6 T7 U# L$ ]8 W" o- B
) x& K) |: e; a; I! B
set xmax 30

0 [6 u0 |# l; F/ H, M, ^& y
% i+ G: _  ?* vset ymax 1.0
; h& A% ]3 X' s0 `  S& H  W
! m% d" ^9 p7 B8 Q, t+ I% t
clear-all-plots

% P4 Z1 u# }" P& [9 y
# L6 t. @2 h" ssetup-plot1
. n9 `8 `* L0 f# z
* l. j5 P: b& P9 h; `  P& s. }" X" I
setup-plot2
1 l& T( z/ h0 x

9 P5 K( ~1 h2 L* i) K9 {3 Vsetup-plot3
* C& `0 \8 q8 s# h8 w
end
9 s  z7 I8 ~8 _/ ?! o+ U+ e  ^& z2 t2 k7 }& @0 Y1 ~; B
;;run time procedures$ U3 i$ w/ M& ^

: g4 w, V2 O' D! b; I2 _to go
5 t* R3 z9 E" f1 j; D& \( [$ U
5 C# I5 i; p" c: Pask turtles [do-business]
- K" y9 i1 }1 ^/ Y* t: B
end
9 n: ?- a1 B! |+ o5 h
* m. @: B! z9 q, [to do-business
8 X: b/ ^: y/ c" B0 k) J7 ]: {7 C

$ g  a/ y7 X, ]/ j
' F1 @& p9 v" I& a  Zrt random 360

& B  C, W1 @/ [. h: d3 v3 D  o! J8 c( K
fd 1
3 i+ ]4 z5 f0 |- i1 Y  @7 Q5 f
0 {3 [# z* z( i! S, w# Y
ifelse(other turtles-here != nobody)[
! t$ U7 T( K2 [5 A8 }; m
" z; o: _0 Q( ^$ ]+ F$ Q- |
set customer one-of other turtles-here
3 v+ \# a3 P) _# K1 ^; Q

/ i0 O& t  h! \# U;; set [customer] of customer myself
! \" \5 I7 l! ~+ ~* t  P5 I
8 J- u4 n0 {3 P* K7 d3 M# r. A
set [trade-record-one] of self item (([who] of customer) - 1)  \# i# \9 v$ S$ m' n5 P; K. ]
[trade-record-all]of self/ E  M2 v2 q# T8 s4 c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. X9 i) n' p$ o5 D/ V5 T% @! g- i' [* r+ Y
set [trade-record-one] of customer item (([who] of self) - 1)
. g1 C! T1 Y/ J[trade-record-all]of customer
$ s' V, Y# |) \* v

, @4 q5 L8 f% @' `4 x  o1 sset [trade-record-one-len] of self length [trade-record-one] of self
5 b- V; s1 Z' D0 F  k

- I7 v* F: z4 n; z! l9 yset trade-record-current( list (timer) (random money-upper-limit))
% b% B: [9 M# C. z
* R2 V9 T$ k' {7 \/ t" O
ask self [do-trust]
7 _1 v2 U" q5 X;;
先求ij的信任度
3 K" [- d' e* M4 n6 z
8 R9 y; f$ W& Fif ([trust-ok] of self)
' {+ c; o( |/ Y;;
根据ij的信任度来决定是否与j进行交易[3 L# Z# T2 ?' h# X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 ^! z2 G8 A- K7 {6 G1 U, {
' h: T/ k6 \" H4 ]6 ]4 A
[

9 f4 e3 H$ J4 A- Y) e# X6 ^: p$ b* a5 I) h  K
do-trade

4 K' d5 M, S! W% e; x/ W
7 N) \6 x- t* e2 }# e2 L( Qupdate-credibility-ijl

& A- A6 S* l# M  M8 t
1 p# Z8 P% Q& u: |  B' o, }update-credibility-list
, Z3 J* G: Y' s6 T; q& `% X. [8 b

0 Z* F9 _9 ~/ n* e. }+ g& `: A  P( Q0 ]5 V9 d# M) M
update-global-reputation-list

% N9 N- U; o- R* s0 [' s$ x- S) C% W& S* z
poll-class
  F5 }* d& j/ p& H# v
# O+ \' k0 o: c7 t' C# q( q
get-color

6 F8 S/ `  l, P1 n: z0 e- u" a% ^* P2 R7 ?1 Y' N
]]
8 W' t" r6 h) n9 {/ K6 Z7 j0 o& v! ]3 \
;;
如果所得的信任度满足条件,则进行交易6 ~! [9 k* f/ x. u' K

0 @* C8 R* e# C- v! B5 M[

7 f' n* t9 F, U9 j8 g! `
% @% o5 U' Q' T2 p" Xrt random 360

& W. v6 l% j, a5 J  c( q3 b; ]: f4 ^  X0 j# J: ^; U3 B' B+ X
fd 1

4 z$ Z3 ?( X4 l0 Z: V6 L* J8 S' w: D; p5 J$ [
]

: `7 W' o: ?7 l% O0 d) K) w- S+ I. G6 W3 m
end
8 G2 _7 v/ l5 a- D) v

) m4 M, Z8 V4 m$ e% bto do-trust
2 `' o1 Q+ K) i; G: Lset trust-ok False+ A+ f1 g- A: w* p5 d
  D7 n8 m8 |) e% N3 N' l
8 g! _( m: \4 d5 q$ A6 s
let max-trade-times 0) x5 d, v0 ]  u% s! U/ G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, B* C2 i" s* d4 C& Slet max-trade-money 0
) b8 X0 x% x  E8 H8 L& _5 dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. n# p- ~  Y0 M8 D" y3 v* Llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 c$ X/ s' n! l9 m

/ g% F1 ?8 t# x: S5 ^2 a2 C
6 \" Y( l# m: O6 f' v' b
get-global-proportion
# s& M/ V6 K' v& K, U- Z' {9 ^2 Hlet trust-value
0 ?2 s4 i: L- d8 Y* K2 [  v0 `9 n; olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: @  K# |; ?' |if(trust-value > trade-trust-value), k* J+ ]* w, M5 o8 L5 R8 q
[set trust-ok true]* P' U% [) x) m# V0 N2 ~
end
  C: V  L* S7 t7 m$ s3 H1 n, C5 [3 c0 u# I$ Y0 ^" u8 C4 r* y
to get-global-proportion, h' d% K; \. z% q1 ?: W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% k) ?2 l& F' D[set global-proportion 0]
* O  ]3 @. i) U' u  y% ]* t6 p[let i 0/ d! V) p: d. [$ P8 y
let sum-money 0
: k# B0 }, r. u1 G# b5 g0 fwhile[ i < people]
' y  y" y) \& w3 J! G* Q[! t; R  n4 n0 {2 ~  t4 K' `
if( length (item i2 R/ d$ n  ~& E3 F
[trade-record-all] of customer) > 3 )

3 c% k1 ^2 e7 S) T[2 G3 `7 |/ C+ H% \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& R+ k, {, U( I]- S8 b  K4 ]8 Y: N& Q8 C
]. Q- S/ u3 d6 a" D& [( z2 y
let j 0$ X  Z, ~. E- u; f7 p* n: i
let note 0
- K8 b5 X* L- q# v, Mwhile[ j < people]
& Y  U% ?/ m) D( U6 T9 q% x; A[6 d4 G5 ]/ k( k  }# b
if( length (item i
4 l: m( I( s+ e) d/ X[trade-record-all] of customer) > 3 )

- K* Q1 N8 h1 J2 N2 r$ T& l7 _# B[
; O1 q1 u4 F3 g/ r) Y& n) S6 xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% X$ Q4 {5 B, O; ]" M
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 b7 d0 j& b$ s& L/ h5 Y& N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 `8 ~& p! o! a5 C, A/ G4 s
]& _  k* T: Y2 j6 B' P
]
7 x0 n) p4 \/ P$ E% r# S, U8 Bset global-proportion note
  ?0 Y% q" [9 L- T3 o]( ]' r. N0 i6 q9 }0 j& N) w
end
! M5 m* B0 D7 C: }& [6 K  b( @
. I$ x. V: y$ |7 d% Z; uto do-trade4 l) q, M& q  b2 X7 y& [( Z
;;
这个过程实际上是给双方作出评价的过程' t* @) S- z8 Q7 e, n, S3 u' f( w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 u% F& f9 i3 D, g( x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ k" I! D8 ]( N2 \% d/ V& sset trade-record-current lput(timer) trade-record-current- o# r) `. i: {8 z- f
;;
评价时间& O" N9 j( o/ `$ b$ _
ask myself [
  R' k( n; g: |- u5 Q' X3 Xupdate-local-reputation" p( N& C4 W% T( |
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 {! U3 j0 D; N$ j1 c]
' {2 [3 @$ y. Q# L3 Jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 `2 _% }, c2 A# r
;;
将此次交易的记录加入到trade-record-one
* |: O9 G) R- i1 i3 T7 oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), @5 n; @# P8 j) F- Z
let note (item 2 trade-record-current )! w" }- w' W: \* \% j& a& o
set trade-record-current
- [4 U' r1 {- d( D5 A) R* K4 [(replace-item 2 trade-record-current (item 3 trade-record-current))

1 w4 y9 U  [, x) a0 Cset trade-record-current
& w7 ^6 w9 x. e8 K+ H0 H(replace-item 3 trade-record-current note); K) A; m4 w  A: w7 v, s

1 z$ e: B1 Q$ w6 @2 `

! }. Y3 v! _( R6 D3 Rask customer [
+ H1 z) G/ s, |- o1 E. W' A1 Kupdate-local-reputation
& B* D. l! m5 m8 B8 _; uset trade-record-current
6 s" W! K; r$ z/ i( J. m7 H(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ g% o$ p3 Z$ z5 [' m
]* d: R* K; E7 D
& ^- M7 ^8 r# n
  V7 R$ z/ j( G9 a5 S5 F
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; I, J4 R2 j) @5 E- W# M% Q) n

, z) d( |, S* r; M# Lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), P, T# t$ s% K
;;
将此次交易的记录加入到customertrade-record-all
: d2 G* o! D8 F9 hend
7 e( `* h6 L! V& E; ~9 U5 L
9 j9 P2 y! ]' n5 a" L& gto update-local-reputation
. c' J1 P: S4 X0 B4 J; r* [set [trade-record-one-len] of myself length [trade-record-one] of myself! @! h, O+ Q+ x# V9 J7 \" t

8 T+ k/ {* w4 O! M. V% o( c* |) ~+ b( {& @+ m9 y) c: e2 s
;;if [trade-record-one-len] of myself > 3
% p3 w3 L" e. k. M
update-neighbor-total" D+ b" k6 J! ]5 a! q1 U
;;
更新邻居节点的数目,在此进行% D+ k6 s/ N" v( `; I8 L* O
let i 3! {+ v2 _1 U3 C4 D% h% ~/ @& [
let sum-time 03 }2 q( y2 y' Q2 _8 h; J: I
while[i < [trade-record-one-len] of myself]9 _0 ?- Q. B4 Y! e3 h2 O( v1 C0 L
[
* L+ F4 _) k. D1 f$ Q1 Q' Qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 h+ m' e8 U9 e. cset i
! x' a3 L* F1 o0 H5 U, ^( i + 1)

' k% p5 l) [  \! O# A]' f" L3 _& D3 R; t6 b% h% ?/ g
let j 3% B4 j# c2 ]# u/ P9 M
let sum-money 0
2 ?6 V6 j; S6 P7 q2 b' @while[j < [trade-record-one-len] of myself]9 }$ m% x+ ]2 d8 S0 A2 {1 w% p* w
[! y. g9 |) Q. m4 J" m5 p4 m. M# B
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)
. A3 F8 C+ N* c1 P* h. Pset j. G. ]8 T+ }: ?+ O" B
( j + 1)
  j5 J' `* U/ ]% ]" Z
]/ n; h  B; o9 k! x! d: b& M
let k 3
$ n( n# n: `2 @; Ulet power 0; v% H- ~+ v7 u6 t; V+ X% @
let local 0+ g( g) ^' T7 K" c5 }) v, u
while [k <[trade-record-one-len] of myself]
3 a3 D0 k; }$ p8 ~2 e, r[
" F/ ]4 B  ]! K# wset 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)
3 }# Z) _4 Y5 ]( x* pset k (k + 1)
- j7 K. D0 Y  ~8 f6 G/ X5 S]
+ X7 i8 `/ \" w5 }set [local-reputation] of myself (local)& f" V; d6 \" k7 N
end
4 g) \# _0 ]  e
: Y- a+ _7 h  h1 u- pto update-neighbor-total
' T" d& h; @$ K# _- j" C+ G/ n
# m& v3 M) u% B) L& b' w9 nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ E; S, c) ~4 C. h5 g
: p/ a! m% U0 y

/ g0 U& w# I: O( a: cend1 I; k+ O& D3 K5 z( o7 S6 X

& J% p8 T! D+ [to update-credibility-ijl 0 X( Q& j# @  k

" M9 L# u% q4 \) t- j4 f; w;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。7 `) U- v$ G% @, m
let l 0
- u" X* I8 D: N6 v" Iwhile[ l < people ]% d$ E" F* Q( _2 _
;;
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
" m# n2 L, b+ c  F9 K# n7 f[
/ l3 P9 |/ P# [) C% Y) f1 N" p3 glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! x4 H* r, k6 V+ sif (trade-record-one-j-l-len > 3)
( I6 [' j7 ]; [4 Q& R2 C/ v6 }[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-one9 ?3 d$ `3 s; ^1 Z" y) J' H
let i 3
  A8 l5 m7 N" K) q9 ^# ]let sum-time 0# I: e7 n! [2 a7 b, r
while[i < trade-record-one-len]
1 x/ T3 W2 x7 @( i1 c5 ?2 F[! u5 p, F; R$ \8 e0 Q, Q* D% |* K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 z! h' w2 k/ K( M0 o( V: r9 pset i$ z2 z. l( y2 Z  \
( i + 1)

" X& c$ u& H! Y]) k5 r, ]1 X4 r% I# \% K1 T4 c
let credibility-i-j-l 0, U( W6 F: K8 v; [$ \- W( F5 t" g- w
;;i
评价(jjl的评价)- v  K: |4 ]  v" B0 ?
let j 35 M& v& i5 |7 p0 _8 b
let k 4
! p/ Y" y* M8 nwhile[j < trade-record-one-len]
  k0 a; p; P1 k4 D' P[) v4 U8 \( Z- F7 ~% r/ b. k  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
0 }$ @9 b8 W1 b* S  [) v' T' fset 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)
0 G4 R# g9 \6 k8 G7 rset j5 }& C/ o$ ~5 N% W- _! l
( j + 1)

% u0 c( ^( T1 h5 B]
* p5 F' M2 R% l( s, k& o: @9 L* jset [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 ))
& i4 ~- p9 g/ f  o  L, F4 H9 {# ], b4 k$ c/ \! b

4 P( O7 ?; Q- W8 ]( qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' Y- K1 X: s( F1 p" J;;
及时更新il的评价质量的评价$ C9 E+ l) Q# K! t/ u/ N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. v4 a& ^7 u. y9 ]7 N7 V; o) yset l (l + 1)
/ c2 h! D$ ^2 k# ?) P]& v2 d+ c. y, C: g7 K
end1 _3 v3 v$ M) s$ I

. f% {' O6 x" x1 T% D& M9 s: T# tto update-credibility-list: Z6 K9 u' v  X' Q5 R
let i 0
9 s3 |' E- I6 |3 l  Z6 `while[i < people]
' D; W" Z9 r2 B5 \+ d" T[. T; ^. _/ K8 ]' d
let j 0
# c; O& q9 q$ t" ^( `$ r7 nlet note 0
8 [. L' `% Q+ {/ a6 |let k 0
1 p: l& h+ K0 Q( Y;;
计作出过评价的邻居节点的数目
1 M- N% N; l5 V2 cwhile[j < people]3 e0 E5 B( r( o
[
  ]% I# G" \" R- u8 O, q) Rif (item j( [credibility] of turtle (i + 1)) != -1)
( Q  w+ C% i( s' h6 v- H;;
判断是否给本turtle的评价质量做出过评价的节点9 O3 `- W& M# n7 q
[set note (note + item j ([credibility]of turtle (i + 1))), n6 N$ j* I; }8 X+ c3 ?
;;*(exp (-(people - 2)))/(people - 2))]

2 k0 ^% m. X/ s/ f0 o' _/ a$ ?' tset k (k + 1)8 r# A: P6 I* D* Z6 A3 L  {; J2 k
]$ w7 h- r2 }6 `1 [8 V( b$ w
set j (j + 1)
# _% Y. l! s% h3 l]
- [/ ^7 s( Q1 D) I% T9 dset note (note *(exp (- (1 / k)))/ k)& m4 k& j. |4 l, c. N: ?
set credibility-list (replace-item i credibility-list note)1 x4 }# \) a$ ?2 P3 }
set i (i + 1)
' J$ q5 q$ B2 S0 r]
) S( a; b6 i5 m0 u% P, N, Dend
% c$ ?8 ]4 `; |1 j2 s5 G& u% _! h# a' U( s$ u
to update-global-reputation-list
/ n+ T' ?2 n9 G; F. u. \$ M, glet j 0
. h: g6 P+ Q) V0 r/ U% Nwhile[j < people]5 ^* G7 r  O) H  s* ^9 ~/ ^
[
: j( g( ?5 f% |/ T, E% f) E) j7 Elet new 0* @2 c0 u3 V; g
;;
暂存新的一个全局声誉1 k# c! k- Z3 p
let i 0
. \$ k5 O3 b1 U" V. @9 R7 J7 P% U0 olet sum-money 0
7 ^; R& ~$ r1 }let credibility-money 0
+ d( v  ~; ]3 k0 H* S  ^6 X* fwhile [i < people]8 d, q* `/ x# p& u9 f  z  e
[, F' s# P# I  L& ~1 J' K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- a* f, \5 u! u+ w2 G) ]$ N, Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), U1 E" z- p1 C# V) `! D# ~  N" B% S
set i (i + 1)% T; M7 w3 r+ P
]0 N. m3 P8 i9 F- w& H
let k 0
* n, S# m! \9 K3 p2 hlet new1 0& S# g; J0 ^5 V. o8 D# R
while [k < people]
& v& m4 O; I0 a$ Q" G( b[
+ h4 J, y, b1 }- V7 nset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)1 m  r" V, W- W+ k( x; |& o
set k (k + 1); x4 f5 D1 y: u) k
]
) y2 H' q* y, V1 p7 X) j  gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + g$ f7 S- `! a2 d
set global-reputation-list (replace-item j global-reputation-list new)# R0 r4 I- {8 `8 b; Y7 y
set j (j + 1)! P- g" Y3 f. Y' K1 c
]" U$ Z- G4 o0 t% h
end' b3 ]  k* v3 ~+ V' [

3 P! Y/ \+ M& }% g: Q0 D7 E3 k; J6 m  D

9 Q; g6 w: E% X% V7 W( Kto get-color& B0 {. r! S# C: \$ I) {( H
3 ?1 B' v$ S. H/ ]0 o* R
set color blue

* k( N1 ?8 L# s8 m) B* Aend
. ^" L9 C$ i* S! @) k2 _" Y  R6 Z
to poll-class+ q. k$ I* h, Z) [
end
6 y& ]( H1 S2 F, U
$ `) ]; f; C2 Z& B- Zto setup-plot19 e+ y. J5 Y4 r9 d

3 l# }' V* v: w) Mset-current-plot "Trends-of-Local-reputation"

& h7 P0 C+ S/ F
. K" o9 o1 y: s, Hset-plot-x-range 0 xmax

0 _; J% O, W1 w" k. d: I2 p4 V5 h9 \4 o$ X" }. s# @
set-plot-y-range 0.0 ymax

* i( j" f; O5 \! {, Nend
% G, K" t' h5 o5 [% i& e
3 m' Y2 k6 U* ato setup-plot2
$ S/ P, F! {% u& ^; w7 @: {4 x% _  @/ [( I; d
set-current-plot "Trends-of-global-reputation"

1 P9 M" g3 m$ p% W  S# D" `9 |( S1 J
set-plot-x-range 0 xmax

/ R2 c( o; z0 V8 X: M" M* J( A. ^4 C) Y
set-plot-y-range 0.0 ymax
: z. ~! U1 L5 P9 {1 g1 x: n
end! Z; q) m) r: Q' a
  N8 j0 ~+ J5 }2 ~5 P; `
to setup-plot3
* |0 i0 O0 Z, ]3 y$ \1 U8 V# x. Q) ]3 B5 g$ v1 K# F- k, L5 F* f  V
set-current-plot "Trends-of-credibility"
4 @& A, u. w$ ?8 D- ~! d

, `# T  F# V+ g, `( uset-plot-x-range 0 xmax

' k$ v4 U; s; Q  i- n1 @
' k1 C1 S0 [2 Q3 s  g$ p# C, D6 i, tset-plot-y-range 0.0 ymax

9 ^5 T# y& k3 V/ e" u3 s) m2 J; Vend
9 E/ Q6 x' P5 R6 p! X5 k4 q+ H3 \' d) L; [0 R6 M/ ~
to do-plots
1 {$ D: t7 A& @, o: pset-current-plot "Trends-of-Local-reputation"6 R2 N, J! [" m% j( T# b( U
set-current-plot-pen "Honest service"6 _; Y0 Z% o2 p, s# Z/ o$ O
end$ m, \9 @! i( Q; B2 ^! L8 z
$ S1 t$ @: Y0 [8 l* a, Q! I' Q
[ 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 V% U% P0 K$ s3 H/ }" c3 J( X+ m" }3 C3 r) W$ ], U% Y
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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