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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:
- K1 I4 U4 t: Q! J& g5 D. I. ito do-business
+ [% S" }1 i, r) ~; K/ s; f& K rt random 360
* |( S0 u  r# L& O7 M fd 1  R7 ]- c0 w! ^5 h; ]
ifelse(other turtles-here != nobody)[  C! M3 m4 d/ {. @( U% G
   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.
6 K/ N% S6 O9 N* B: r1 j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 n9 ^* \! K0 M8 h, W5 `/ U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' o2 s0 y% ]9 n6 Z9 ~   set [trade-record-one-len] of self length [trade-record-one] of self
- o% D- A$ i8 J2 Y( d   set trade-record-current( list (timer) (random money-upper-limit))
+ }$ I. h- r6 s3 o7 F4 c* o4 \4 C9 t  ?0 P' s1 D
问题的提示如下:
9 T8 X$ ?# K( B0 _3 E4 P, T* n8 M& ^" {1 Q
error while turtle 50 running OF in procedure DO-BUSINESS3 S( b( d$ P# |) h2 ^
  called by procedure GO
) [0 X% C' A: d  Y% o0 N  wOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 X" x0 V  [1 y4 o4 d) R5 b
(halted running of go), J+ b! l: p) q/ s7 i; A

3 h/ T; c& \/ p, E% @0 b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~~, t! w' e2 g8 J# }9 `% u
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 v1 P$ F6 k& T: y9 a5 U; V. ^globals[' Y3 ]" f5 o4 n" B- g1 H% A
xmax
; q$ U5 A/ S! n% \4 T9 J7 y+ gymax
: R. w* h+ n$ @2 dglobal-reputation-list
# \0 b$ M: g8 {/ S! {! W; s4 x
9 A% A& C$ |+ o;;
每一个turtle的全局声誉都存在此LIST& n2 `1 ^: S7 W7 }) S' H5 |
credibility-list
/ V/ V/ a9 a3 _  ?* B, u0 \. i2 Y;;
每一个turtle的评价可信度
- U- L9 w+ i" l6 phonest-service
$ O7 q2 S5 ~" n' W" Gunhonest-service
# w$ P5 j& C2 a) \" k0 V. f% poscillation
8 A! |3 v* I) C5 O# v: i" T4 \& yrand-dynamic
* p0 {4 |9 C( N) @]
5 J/ {3 ^, C0 h6 F3 D8 L% ?9 a% n9 d; c# _
turtles-own[
6 b0 t. ~- o. j% Ntrade-record-all
  u2 P6 m8 }: R& a+ U* @6 [;;a list of lists,
trade-record-one组成# y& Y$ P& g- g; J+ k
trade-record-one
. Z9 c+ Z+ H( F& `9 V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' w+ y' m, X9 m+ t) X6 @5 O

( L, b+ q( i% u5 S6 Q;;[
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]]( W: Q0 o0 V2 \4 _) T& ~
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]
9 |7 H# [- }9 _% q% X( B0 \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& N2 o/ @$ y- K* H
neighbor-total
) n2 j  M* c' {& ~# c5 v;;
记录该turtle的邻居节点的数目2 ^. X( V+ a4 g" f8 _6 M
trade-time1 Y. G: I$ S/ C4 g
;;
当前发生交易的turtle的交易时间  t8 X' y; O, q7 Y
appraise-give
8 ]9 L. b& b) t: l" M) f* V& p;;
当前发生交易时给出的评价
% j2 H* g$ {3 `) l% Wappraise-receive
7 [- e1 t" U# h0 V( H+ W;;
当前发生交易时收到的评价* g# @( t; a$ a3 W3 j1 T- \9 ?
appraise-time
% D% {$ n3 K+ D4 l' w* V;;
当前发生交易时的评价时间+ ~1 r* @7 v6 z. t5 P8 P+ B
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" c( {! n- Y  ]# t% [. {1 R) L4 mtrade-times-total
9 N: Y3 ?: N0 `1 [! V3 {/ r( Y6 {;;
与当前turtle的交易总次数
2 w3 o9 ~7 q6 L! Ntrade-money-total/ x3 m8 R0 p4 c3 A0 ]5 k5 U+ j  S
;;
与当前turtle的交易总金额
- j: }& X  R6 I; a, Xlocal-reputation
$ T- B0 t7 u6 iglobal-reputation. G4 j% v5 d0 @1 F
credibility
6 ~! ?4 K: y# E/ ?;;
评价可信度,每次交易后都需要更新& i; I0 _" x, ]! F0 Q+ ^! F
credibility-all
4 P& J8 u0 j8 \* i;;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
& ]$ J) s7 Y4 _3 E! I
1 [2 t1 l( `0 o9 c3 A0 u;;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0.53 {, J/ A4 v0 ^1 M5 U, D( ]
credibility-one
& e* j: T0 \2 w' {5 r7 ]$ n;;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 X3 R3 S+ A! P
global-proportion* F4 O( O9 Y7 a4 u* R
customer. m) Y) b8 V/ s
customer-no- L# T6 ~' Z1 V: d, `9 S- O
trust-ok
6 U( ]  i: A: D; F* ntrade-record-one-len;;trade-record-one的长度/ H3 M+ L7 k/ r$ g) c- P, r
]' w" V, h7 g4 s* i

+ d7 ]* A6 k0 N, ?;;setup procedure
; O  a/ p0 h# h% H$ |4 R
# O( f  b% N; S% @% G& x; Ito setup8 T1 b9 q9 S; ?/ m

( }/ `. c2 m: \( ?4 Pca
( a/ j+ z4 x8 e- t+ ~
: M" H. u5 ]4 u: J* K
initialize-settings
! L6 n3 d" [! p" j" l

% G5 Y+ {6 ]4 i# fcrt people [setup-turtles]
+ l% y0 r" F' ]( O* f

6 @5 J2 e2 ?0 r. }4 @: c5 treset-timer

" {8 }# p/ x9 G! y  Z6 V- ]
% g/ i* P+ `2 r% E) A- j& Kpoll-class

. Q5 X) v* V5 f( j4 y8 S
* F# N2 F5 v! P4 _9 ^; dsetup-plots
2 [: z# K& A4 Y/ N3 H: `$ t8 {

# r% v6 I  D' B3 Z# sdo-plots
  B* }" G0 X" z. C, F
end" ~7 \- v8 m3 x1 Y  ^; \9 K: O  d

+ f' g( M. g# ]# E. f* N- |. e" k7 ito initialize-settings; ^: Q, u) ~1 S! [( l: T
# j- I2 t# N4 s7 e7 f. a" I
set global-reputation-list []

2 S$ }/ ^5 B4 M
" f. p; _1 r8 q& ^0 {set credibility-list n-values people [0.5]
8 \* H2 T% Q7 F2 D9 [2 E4 F/ }
  v) C8 `* }- Y% x0 h3 X
set honest-service 0

7 H. k& ^6 G' K- p$ ^0 E5 I% W; b& E# {8 g
set unhonest-service 0
# M" p% Y  H% t& T1 G
' P$ v9 {: m& ]5 D
set oscillation 0

$ q# I8 c+ {( v; d$ Q- C4 |; ?3 e3 ~. T
set rand-dynamic 0
7 a; k% H: h9 S0 R& M' Y
end
3 k* g6 _7 ?2 @3 D& v" H1 `/ P$ f, @, U- j9 X
to setup-turtles
7 @! O* G) H9 ^/ }3 R$ v# P! N, Yset shape "person"
2 b; ]  o$ J/ f. s5 w# ^( ~' x( \setxy random-xcor random-ycor: g6 u7 w  `$ C. v$ T% T
set trade-record-one []0 r( n, [% g. G! h. j
: h9 Y: O& Q% V$ ?
set trade-record-all n-values people [(list (? + 1) 0 0)] * F- J! g' b3 H) l

0 Z0 ^! Q1 O! R) S; L4 {: b! ^0 dset trade-record-current []
, M) V# o) _# Z1 D8 r, uset credibility-receive []
1 U) o6 U' `6 c3 a, kset local-reputation 0.5( m) ^$ L$ l) ]$ ^7 q
set neighbor-total 0
& x8 y5 q6 F, d( lset trade-times-total 0: ]8 c# @" S2 P
set trade-money-total 0
% s. {/ g% t3 Zset customer nobody9 S8 T6 M3 f3 @
set credibility-all n-values people [creat-credibility]. M* q% X7 W+ \" B
set credibility n-values people [-1]
9 e2 k' f# k$ Xget-color
4 R8 s4 Q# t* G0 a

/ O  D/ g; @' g- y. w7 send% t) E+ T9 j' J' B6 G0 M
: Q% S; z: |3 w7 h
to-report creat-credibility
" f3 T  i! V( o- o) R8 wreport n-values people [0.5]
% q% m2 j2 S; v3 P" u  Mend* [( B6 I4 z2 u- N# g

( r$ \) c$ {" b3 e1 a/ E( cto setup-plots4 l0 R4 _  a" C; b

/ ~$ ^+ K# ~9 [# J9 t  Oset xmax 30
! q' y* a- x% c% J8 R' D

  n9 W' s/ p8 c0 p- N! z0 Uset ymax 1.0
# j" r! Q* m  {5 V
* m" C+ K5 u# j5 O( v5 `! {& M  p$ {
clear-all-plots

3 v( b7 S0 U% M0 P8 [2 ]# n5 o% l8 |& M3 p8 ^# W% W
setup-plot1

* n  i& q; ^6 n! m9 {" G
& u+ C, i; a. |7 rsetup-plot2

& P# o- B/ K0 r; M. Y9 s* |+ n% }' f
setup-plot3

( ?9 m" M: X8 z1 q  P  [8 f! V7 nend2 C: [! D5 U3 W, M- Z

9 W5 C4 l* N) z' A% i, d7 g" \& w' ~;;run time procedures3 B: g. [4 S. T+ R, n7 i! `

! j, E: f" [' e! c" Kto go; d& w- d- c/ r8 U
$ k. k% q. t7 O$ _8 X. s
ask turtles [do-business]

6 h8 i- [7 n) @1 p$ Tend2 t; ]6 E# C. d
2 L% o' g, t4 d- b( g! Z/ m
to do-business ( D! J3 G: q0 h& b  Q
, S. k* R* y; D* W
# V/ y) ~  V- b* _0 R
rt random 360
  n: I' B( m! \1 @

. p- T6 h8 u& d$ V! `3 }fd 1

7 x( S9 g7 g* E  E+ s
2 p. ?5 z' _) I' _0 G. j, S" E4 c! Cifelse(other turtles-here != nobody)[
; s6 P# Y8 \. v( _6 F
- a: J% ~! I2 [3 z3 A" q; j
set customer one-of other turtles-here

6 e  I6 B& M" {( X7 m  F3 [; h. T5 W  w* [7 b; x
;; set [customer] of customer myself

8 D  `3 m6 r+ W$ E) m0 e7 ^# ]
- J' s2 o. `4 h1 V. Cset [trade-record-one] of self item (([who] of customer) - 1)
+ o8 ^' \$ w6 v& ^' L/ F[trade-record-all]of self9 t& c0 V( _/ ?
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' L# D! B  y1 T5 T

$ C' T" r2 M) K0 m9 h) ^) Eset [trade-record-one] of customer item (([who] of self) - 1)
( w* x9 G5 \  R; U; y[trade-record-all]of customer
" W+ C, ~3 s! P( w4 b

, W9 @/ N& a! [" x* s# I5 ~5 Uset [trade-record-one-len] of self length [trade-record-one] of self
. C( Z& d+ Q. h2 @' h0 ~6 I

7 [3 f6 Q, r% W" U5 J- ~3 Oset trade-record-current( list (timer) (random money-upper-limit))

+ `0 J3 j8 b. e) }3 x% H$ E* B, ?9 {$ O
ask self [do-trust]0 V  ]' Z0 F3 T
;;
先求ij的信任度
' r4 H2 o- W) C8 p' V9 G  r3 O$ ^
$ L  K. d/ x' Y: q2 B" bif ([trust-ok] of self)
; m# g3 l; }' g0 W( G$ _;;
根据ij的信任度来决定是否与j进行交易[8 ]) [* b$ ]* t3 H, `% w
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 O$ e& J$ s% r
  q; R3 ]9 y  e* E3 T2 D[

3 Z+ A: f7 X: U5 C! ]  H; P# H  c" q& k, V9 r) q3 c. q+ [
do-trade
$ K6 Y% o0 l  U

* G: i0 M/ W' T# kupdate-credibility-ijl
' }/ _) ?6 E" o- l& T: x

% k/ w! ^- _! g+ lupdate-credibility-list
5 l' l4 _' @# c' _: _
1 |( i$ n  p2 Z/ k; }2 }
- j4 n+ D3 `5 t- f2 D
update-global-reputation-list
7 X# A; h4 [, S% m2 I

# a6 K/ V) r# T. C0 h8 |* rpoll-class

7 k& V* x; p  ~+ b  ~0 E7 _
. @# w0 \3 H" T& n- Q; x7 T2 Aget-color
8 n& P) z5 r" y2 M+ w: J: b6 A

  E' p$ [4 x! j3 f% p% Z]]
& G( x; A- J/ s9 W+ E5 \5 u5 Y% v2 u0 t4 Q1 ~! R4 p0 H; J: O9 t
;;
如果所得的信任度满足条件,则进行交易3 i+ b- |7 y+ v8 z. A; y' j& l1 f

7 O9 |& Y& ^6 s- d- }( R' p# u: X  B[

: `7 L3 a" V- Y7 E5 J" u
8 d/ R; d  y- ~  D5 {: _: srt random 360

, o9 k5 C4 h" |5 B4 ^
$ ^, j* b2 \( m9 Lfd 1

& K7 a: ~$ ~2 [! s+ @+ E* f% @# {- v% C0 Q  d; e
]
0 R% f( X$ J" c! Y. `
* i& x- m! l9 ~; `# L
end
  J, c; T* M9 i$ S7 }+ v

8 `! D9 e" v; u' |to do-trust + M! ^) r0 Z/ R+ m: k7 X
set trust-ok False
2 U1 j! |# f: d: T5 g- ]5 R% ]5 v8 E" _) ]9 x0 e

4 ~( l. E; W2 _( F$ p6 j6 g9 }, R5 T) W6 U& elet max-trade-times 03 v5 z" t9 Z: {! ]. d8 ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% I+ k" l& o% ~; }
let max-trade-money 0
/ A1 q3 e2 F9 M4 a/ m; C7 Rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: c, @; W& P' o/ G& |2 blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); d9 u& `. W4 {, p! ]  U

* r9 c; @9 O: l8 P- s  O9 Z% {

. X+ D; `& @% \0 ~6 T6 B' m) Gget-global-proportion
; L. c8 `4 ?% h7 v8 E4 M0 clet trust-value
; H" P% H+ Y) ]7 plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' Y2 V' ~' U1 s0 g
if(trust-value > trade-trust-value)
7 O/ _( b' C5 k0 r! F0 c[set trust-ok true]
- `9 S: I' g0 Y1 D- Vend
3 d. h; v0 v8 m, ?9 y& H6 D* V: j( f
" `: @8 `0 [& M; |6 b; Pto get-global-proportion* v% j- p. Z' F9 R3 s* j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 M  H1 L1 f0 R) i3 A[set global-proportion 0]
9 U4 v3 s, Y; K1 t[let i 0; b" [3 Y+ @$ I1 E
let sum-money 0
3 ]' s+ L8 r+ u9 A' b3 Twhile[ i < people]
7 M  k3 i6 K8 C0 J  m[
2 S- X5 N4 e6 Nif( length (item i8 l! B& S9 N9 V+ ~& D
[trade-record-all] of customer) > 3 )

1 Q# Q! J& |0 a[5 r- b1 G; e" y" g: E# C
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ c) Y) ?* N# p6 d# Z
]
! P3 B: Q- y6 V: K9 P3 D$ O1 A]
! d7 ~! q( q) @; R( l/ [let j 0, |# V$ \$ T" k' {0 Y2 ]/ O
let note 0; ~' C3 X5 Q* ]) @/ [) |$ U% ^  J
while[ j < people]
+ {# @* f+ ]1 H/ H& T6 x  |[
# Q$ e" X( W$ F6 j! Zif( length (item i) S" K8 @0 @. q6 G, E
[trade-record-all] of customer) > 3 )
3 J# v) J5 u7 x! s) P. R
[
* v, H/ C* r' yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" d' P4 s9 Z$ ^* d6 I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& ]3 y: ~1 X4 s+ p[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& S( t; [, \0 `6 s5 f- r/ x  W( f
]
. `5 F2 Y/ Q) e& k7 \]
, F; Z  M, U' d! Vset global-proportion note  H8 j) E2 y  o
]9 J5 J1 }' |6 r6 S6 D" m
end
& ?1 Z$ j0 l4 |" T3 N; L* m! q+ M. j+ s" [+ n5 X  y9 c) X8 [
to do-trade, x. P  ]& D) f
;;
这个过程实际上是给双方作出评价的过程" a' O  n$ R( P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 Y. r: S, j$ L0 D2 c; p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& d, Z# Q. }- a- X# X# n5 Cset trade-record-current lput(timer) trade-record-current. M# g! v# {3 e6 d* y' r
;;
评价时间2 x- r! P- m. a( F1 W& m8 o
ask myself [6 U% ^1 ^7 ]' f/ A* m1 n3 v
update-local-reputation
7 t* R" N, L- w4 J* d4 V" bset trade-record-current lput([local-reputation] of myself) trade-record-current6 D4 t8 l: ~! v! W6 n
]3 t4 x- D, E6 J& d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* p, s6 D; J& L, y& t4 R7 b: B; B9 };;
将此次交易的记录加入到trade-record-one9 I3 J: F1 ~! h6 M; P" a+ _7 P; X, w6 y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 M. g- B2 v4 Olet note (item 2 trade-record-current )( [; i2 A! D0 j. g, K" H0 i1 B* F
set trade-record-current: o  G2 q) ^" [" W
(replace-item 2 trade-record-current (item 3 trade-record-current))
. d2 [" q. r; X4 y) i) [
set trade-record-current
8 o& ~5 s7 N( P4 B# a(replace-item 3 trade-record-current note)
( Y2 D; j. S5 O3 g8 U3 \; Y) ?: g8 [4 o, U

. K6 G* m' t. E" h; jask customer [: F% [2 p2 Z3 M9 f
update-local-reputation; L( Z" L" G3 K/ [) M
set trade-record-current
: B& c0 H- F, u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ x/ x6 X( N+ u# `3 X% P]
* z/ k+ E6 N  C+ X1 V2 H7 o# i; R, [, h2 O. f4 l, y

  \& F6 `  ~- F; V/ S1 G; rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 |) X. H, s8 y* R4 g, v: G1 H

8 U: X& {9 L2 |( cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  G  q, m2 q2 C; |/ e. H% X
;;
将此次交易的记录加入到customertrade-record-all
7 d5 Q4 \) N1 {9 G, eend: t! I) B. B: u) {- G( j  O5 i
& v) E& \" v- t
to update-local-reputation
. O+ O' m) B8 v6 q9 T! Dset [trade-record-one-len] of myself length [trade-record-one] of myself
( p8 T, ~& h* O7 i% A" U
+ M: P( u: {. H) [6 N- d9 r; j7 @1 X5 M) w+ O0 F
;;if [trade-record-one-len] of myself > 3
* B2 j" S, `5 u% h) I* i
update-neighbor-total8 @. f' I3 N6 M) p
;;
更新邻居节点的数目,在此进行
+ z- K  s. z: M) r4 ilet i 3
  ]" Z7 A: x% c' Klet sum-time 0
+ h" R. p, b: C# {% o' jwhile[i < [trade-record-one-len] of myself]9 o# y* ]& r" l" B7 L
[
8 u# N  y0 v. \+ e! }3 ]7 Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 i* F3 s6 Q, H5 M0 E# ~* Hset i4 A; C% j2 D8 \2 i8 e1 H$ X
( i + 1)

8 f' W$ J5 O1 N' ]9 ?9 z9 J]; z  F" u4 F/ s2 Y
let j 3
2 |. @' o$ n+ H$ q6 d5 }0 Xlet sum-money 0
" X* {" z7 q9 S- d% c+ {while[j < [trade-record-one-len] of myself]
' q$ e  i2 q  c[' f/ X: b5 O6 S
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)6 j' u* E# i! T  i! A. I. @
set j
6 `" L+ T8 _  M7 D/ \7 R5 X( j + 1)
; A) g. X# a5 `/ x7 g5 n3 f
]
, X) c9 a8 e( ~4 qlet k 3
( D, s: [. v* J+ \7 N  j  a$ f0 Jlet power 06 t( Z; N; G3 Y- X
let local 0
+ Z8 E7 W# q+ V2 J8 ^while [k <[trade-record-one-len] of myself]+ S7 h% e9 P( \$ W1 i7 ?
[, c, F. R. F/ m5 N% \
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)
# B* d) g0 c8 R' @, ?' ]9 D' ^set k (k + 1)! h7 j/ f9 o% i5 V+ z0 `" u) P
]
1 ^# x7 _8 B; }( P' t. P9 l1 aset [local-reputation] of myself (local)+ B9 \9 I, C5 @8 a; Y/ ^9 u) g
end
1 ~" ?+ l6 M5 J' c) ~. V; {' f- s7 G: {
to update-neighbor-total
2 j9 u6 e. m0 H; H3 Q
2 V5 G) Z+ l; G3 e- ?1 zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 Q9 Q, T( j9 `7 f
7 \/ h+ e: Q1 ~
# k  J6 k, ]8 W3 t# U, v8 i
end; C4 `7 E5 r% M! U2 m: U
0 [7 S# Y  w: B/ i
to update-credibility-ijl / m; K# ^) n5 H: Z6 }! {
; {/ P6 w8 O; ^7 |6 Q3 ^
;;
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 l1 y( u" h+ G, Klet l 0
& p' {$ ^2 a8 g& R% M+ mwhile[ l < people ]. y+ F& A! s) e5 b; A& R& J
;;
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
7 t4 \! @$ b$ l[7 f; B5 G  X2 P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 Z+ B. g  b% ?4 a7 f1 n5 bif (trade-record-one-j-l-len > 3)8 h2 @/ w, p. m( H$ {8 K! ^
[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
% A+ `0 i3 \0 Flet i 3
/ C4 ^7 }1 R5 K" |: W8 J5 r6 Xlet sum-time 07 P" I- |$ A& \4 y! w
while[i < trade-record-one-len]
7 S8 U% c; [9 l4 [[* U5 a8 D  d, h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 {* c* Y5 e- T  x" \2 Mset i
! s! E5 p" q( c  Y( i + 1)

, v6 @; K! O8 |: }- R]* J4 D! a! S. q; j" x! ^
let credibility-i-j-l 0
& Q# Q3 a0 \; y& D* \;;i
评价(jjl的评价)1 d' P5 C; R+ p
let j 3
0 f! `3 a$ G( ^, Z7 llet k 4
. R* t4 F6 |. }while[j < trade-record-one-len], n( }& p9 L/ |$ P' v
[
2 o9 O# |- \: Z4 ?& _% z% Hwhile [((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
5 i! o% j3 V9 c' b% X4 J+ Xset 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)
* |- g+ Z* @6 ~; a6 }  j* Iset j
$ \8 q, Q, R/ G$ C, |( j + 1)

3 J  l% _! p% N/ K' ?8 []& u6 N/ m  v! G: @$ C4 k: e
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 ))" p# s2 |7 Q) t5 ?) M& Q
% L, b1 v* b, o  @* r$ z

, ?. ~  C0 V4 W; m" L' c1 Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" G" u8 v9 c. P! k4 A0 f
;;
及时更新il的评价质量的评价
( V5 t# m9 X9 t  d% Wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( E! t$ c8 N0 O" [! hset l (l + 1)# u" N$ y# P- g- c; q3 ~
]
- h% B0 }5 x( q: N  o. H" oend5 g; D7 S$ L: r8 p0 x* \+ J; I
- D% O3 |3 Z# J# |: C
to update-credibility-list
+ s2 x' D9 M, V# y( t) s7 ~let i 0
4 R$ S/ T6 |. X9 V9 l* @2 Nwhile[i < people]
$ W7 _4 Y% g4 q8 ]3 s. v[4 z+ I" `5 W9 K  A
let j 0$ o* _1 Q2 z, P- w5 `4 n' }0 K
let note 0
  R) z! R8 c. D" Alet k 0, k# S9 k/ I; x8 @+ _) ?
;;
计作出过评价的邻居节点的数目- h1 @' `& H3 L9 W) P  |( f
while[j < people]9 B* G% q! W+ p) k
[
: O" n, F' |5 u# l0 ]if (item j( [credibility] of turtle (i + 1)) != -1)( t/ _2 L' U) Z) q; y
;;
判断是否给本turtle的评价质量做出过评价的节点$ a: s" K3 r( i; e4 y  y7 E7 {
[set note (note + item j ([credibility]of turtle (i + 1)))+ H6 {* h3 g+ b/ j& u% Y
;;*(exp (-(people - 2)))/(people - 2))]

7 `7 I9 o- F$ f% r+ hset k (k + 1)3 F5 R3 ^* o  }' f' F2 P$ N2 X
]0 \9 ]" \$ k7 C5 B" X# N/ x' p
set j (j + 1)
4 w. ~2 L& S, @# s6 p" R% L]
& \" c/ b- e2 _4 }set note (note *(exp (- (1 / k)))/ k)0 }5 E& ^! F2 s  Y; ]
set credibility-list (replace-item i credibility-list note)* P1 ^; I) M% l+ R
set i (i + 1)6 g# f; S& t. H" ]
]
: W# }; K: C+ E: {end
  A. O9 F) q# j, J* ]! F3 D% u: m! L
to update-global-reputation-list
7 R% q" m+ }7 Y6 ~let j 0& f9 g2 Y9 f6 p- q0 P
while[j < people]
% W+ y/ |; k$ X* i9 G[
* V& u# D+ a/ u( R6 r% q7 Y/ plet new 04 j6 o( n: x* ^4 ?. j: }; `* ~
;;
暂存新的一个全局声誉; ?* j! h2 K$ h* k- e4 f, d
let i 0: j) i. R9 C9 K  u8 a3 r
let sum-money 07 E, F: e' o- Z. |$ v8 ]$ d
let credibility-money 0
( ?* s* A# ?$ o2 o) ]. j1 q: x5 _while [i < people]; j0 X2 n' H4 Z: c: R7 {2 b4 ]
[1 d' r# ]4 {4 r# ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), M- j! o7 U0 a( P, ?7 R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 ^8 O  w. J) |: C$ }set i (i + 1)' t/ b) }; B2 t+ Z; I/ {$ }+ Z, a
]
2 M* D5 M& i5 k# @& [' xlet k 0
# c1 o; Z( h- p% [. }+ {- Elet new1 06 z# e1 E7 k+ V7 z% H
while [k < people]
  N4 }& O! r  A% P" [9 E[! N2 R1 D5 k8 g! s4 L0 ?. f% t
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)1 |$ n! h. j  a
set k (k + 1)7 [6 ~1 ^+ _+ p- @% K
]
2 D: W1 a3 n7 Q! ~+ X! v6 Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 e: |, H* u( K3 d2 R$ Tset global-reputation-list (replace-item j global-reputation-list new)4 ]7 k) t" z  }
set j (j + 1)2 g6 Y5 d' q7 R% f
]
# M$ S# s% n3 J5 @: B' B2 I$ Hend) M+ L# G7 z# C9 g) E" ^/ r
7 u6 |/ l) x% t9 m2 M5 V

% \6 O0 R5 q" W$ H% ?3 @! e
7 V, t. p8 N& M" U- wto get-color$ y6 L. a* o5 j  e
( H+ Y8 U& Y3 f# Z" u% H
set color blue

3 L! x' O: x) P, Mend* {+ H  Z! t% a# a8 T3 g
7 N2 ]- a3 d. A
to poll-class, V. f$ X  P1 H( Z' P1 |4 J" ]1 S& r
end
) T) K% P& B# V" e, _$ R& a5 L. B- k
* Q/ r% K6 v6 K: N& |: h/ Z7 zto setup-plot1
* U4 u% S  l. z1 ~8 Q
9 {! x7 ]+ `* b8 r0 N- ?/ f" Hset-current-plot "Trends-of-Local-reputation"
& L5 d7 w2 B' f5 \1 r8 q) d6 y

5 h( V  f5 T6 s' O3 D) x2 qset-plot-x-range 0 xmax
- A5 W- f. a5 X' s2 F# q

/ {: L6 |( u  r* D5 a6 B$ Tset-plot-y-range 0.0 ymax

5 |$ B& h7 |2 u, D' b5 T5 pend/ u1 }" B6 V5 Q) i. q
# B% r* ?+ e% d8 h8 P* x3 O) B
to setup-plot2
4 d/ i% x4 }* e' ?
0 W1 w( z" Z+ Eset-current-plot "Trends-of-global-reputation"
6 q; M0 p& K; \
# Z$ ~- L) W, e9 ]3 D8 @
set-plot-x-range 0 xmax
9 S: ]( G& A. m4 g( [) M
" s3 R5 k6 I, h, ]2 c- ~8 k/ n
set-plot-y-range 0.0 ymax

+ T6 e6 ^# y( oend- j0 f- J' D" M6 ]" C
* ~% J7 w4 ^* F+ ~- Q. Q
to setup-plot30 w2 N& O8 E. o9 q) r( _9 v+ J7 @

! j+ q1 e8 j- W3 Q& ?1 {set-current-plot "Trends-of-credibility"

! T, e2 f- \+ u: \4 P7 V  t: h. U0 Y! ~, ^8 ~- O; B  O% {7 u
set-plot-x-range 0 xmax

5 K' x+ g/ s7 R! ~1 A2 A. V/ N2 d7 n- R" M
set-plot-y-range 0.0 ymax
* Y" ^' J  t) I4 k
end% w5 e% k! u3 }4 N1 ?
; Q3 I% M# h5 ~9 U5 r6 t
to do-plots0 r3 n( G3 G( g+ `2 s$ G
set-current-plot "Trends-of-Local-reputation": B( z. x6 B8 e$ M2 {
set-current-plot-pen "Honest service"6 |/ n% b& c) M  v4 L4 P
end4 p2 S: @& K2 @; h9 m5 M
4 R5 S4 F1 W& e% T- N
[ 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.
" n1 {2 v& _- D- b+ s" {0 Z. M+ l7 w& G9 h) n+ w* m3 v$ M
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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