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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:
) F" h* R2 u* t" ^7 S7 L: d0 Ato do-business
6 a9 R0 e/ t6 {* `- d8 L rt random 360
1 I$ W8 B1 x( e- ~$ y8 g# M fd 1
( r6 U) [. d, E ifelse(other turtles-here != nobody)[# S2 c; Z3 V7 A1 {. q) {; h
   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.
& s; m+ y0 D$ J: Z8 l7 k; c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ n, }7 V, L0 h" w) j
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. K& C8 x- _  {) N4 S0 v/ @
   set [trade-record-one-len] of self length [trade-record-one] of self
5 l; l1 p$ z& \4 a- W; g   set trade-record-current( list (timer) (random money-upper-limit))/ v4 y* z8 R) F4 v; V  T/ }8 d

- A; t; i, B: `3 r问题的提示如下:
* c( i) j. [6 `8 y- n3 ?& V2 \; S2 I) d& O7 Z  z+ K
error while turtle 50 running OF in procedure DO-BUSINESS
; G1 I, T: i2 `/ U& d1 S+ l# _  called by procedure GO
. J: D7 }8 J2 k: k6 }OF expected input to be a turtle agentset or turtle but got NOBODY instead., M/ E6 H2 \: m1 k$ e% O/ y
(halted running of go), m! U  {+ o- W8 q+ [
9 p: i4 j% P. m$ G2 ^
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~~( j: o% a' l8 T1 A; k' {9 ~! p
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& \% g! F# P! r! J
globals[- y* P( K; d- F4 S* Y5 h1 Q- Q' ]
xmax' y' V( J: x+ N
ymax3 p1 y: a! W# P7 F8 u7 \
global-reputation-list5 W, W1 A* z: j% j

7 K/ p" @6 R' G& X$ V7 Q  E7 l;;
每一个turtle的全局声誉都存在此LIST) s$ K* b6 n* u% j. ]1 v
credibility-list
5 `! t$ ^+ Q' a. w5 k;;
每一个turtle的评价可信度
) r5 Y, \# U6 ]. xhonest-service
- ~8 H, k; A  Iunhonest-service
$ R; h3 C! e# @/ Z" r6 F# Boscillation
; m; f2 R! K2 k  D/ _rand-dynamic
: F/ i. v/ I2 `/ Q0 A! I2 O$ U. q]: ]0 p) w* c9 ~/ O

1 M0 m7 F" l2 G- v9 P9 [+ T0 V+ ?turtles-own[5 Z) g$ j; t1 _8 Z
trade-record-all- U0 O4 Q. |8 E4 j% l
;;a list of lists,
trade-record-one组成. i/ Q7 i5 r1 U* m+ q( C# O$ v
trade-record-one
) a* t* f' x: T: G. `+ q: c;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 {3 M1 p# W8 J9 P

) D- A& `# V( K; c  n;;[
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]]' a0 w, ]9 b3 M. l5 v
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]+ ~2 j0 M9 C5 _  P
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$ t; _+ w- u& F5 y
neighbor-total" [  T( \6 [" w8 l' B" k& k& D
;;
记录该turtle的邻居节点的数目
* V) B- ~/ W0 g" dtrade-time
2 K  `/ E* O4 \% h3 R% t;;
当前发生交易的turtle的交易时间
: ], p5 n  u* n7 w- x: F' @) ?3 ]appraise-give/ z1 _( F3 M/ i& L
;;
当前发生交易时给出的评价9 e) b0 z9 W/ t+ I% g
appraise-receive' y% Y. B% W; M( ]4 }3 p7 M
;;
当前发生交易时收到的评价
0 _8 T" j, `; X& U5 C8 s& D5 dappraise-time
2 u6 I( Y; ~' _3 R  B1 l6 y;;
当前发生交易时的评价时间) O1 X6 |0 ~( R8 s; H: @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 j3 M) h' d* Z+ Ltrade-times-total
: Y& m4 o( B4 ]& T# R4 d;;
与当前turtle的交易总次数  H' b/ J0 ?! c/ a0 P% v
trade-money-total: a4 F, m1 f/ D
;;
与当前turtle的交易总金额
6 O0 ?" m, ]% T: s  G0 wlocal-reputation" c# w3 t, H$ B' m% G* w. Q4 e' N
global-reputation
+ }4 Q! N. c2 G0 Bcredibility" p% ?! Q, D7 V
;;
评价可信度,每次交易后都需要更新
7 X8 R& T* ^% hcredibility-all
3 ]; R1 v4 v9 U;;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 \) G0 C3 C* {- Q- |$ `

8 l: p! J, B4 s6 ?" m  O4 a;;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' p3 p4 K! Q+ J) [2 m0 ]1 ^
credibility-one( G  S, L' _/ p. I0 p3 E3 k; e6 ^0 u
;;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* c. @$ j! k2 k( m
global-proportion* _* ]8 S' y6 R+ J
customer3 [% O( U$ ]7 J4 |" \# z
customer-no
; e# b) v1 n- J' M4 `trust-ok
+ W* M1 r- e2 Y  _1 X& jtrade-record-one-len;;trade-record-one的长度. [) _+ S7 q4 i: A
]* |9 e3 U/ o$ J9 E. P1 ]( E
) z! u' ~- Y. Z+ ]* A
;;setup procedure; c" w7 \3 ^& y

+ p2 j" [9 J2 q: r1 F8 M) g9 [to setup
- n2 F1 r$ X9 g  K) T
( ^9 N2 Q9 r) c2 N% k. Yca

. |$ V! r7 {+ J1 S
0 ?0 F0 i$ _1 p: ?initialize-settings
4 J$ u: ?, V. U5 p! N
: J) P7 p5 D' S% ]
crt people [setup-turtles]

" D( v) m  ]3 t0 G7 O* e& e! R( y9 X1 E' m7 [
reset-timer
# C6 u& b5 k' N$ M% |6 x
; n; g" w5 j- v  S
poll-class

: B9 L+ a9 {/ u( y7 E% W
( h3 a6 g  N' osetup-plots
7 K+ H( q: Z) ~: g* t
/ Q  u7 F- d) R3 t6 ^
do-plots

  w  d+ Q9 D" {& G1 A$ Oend
8 T7 l( I  d) B% I
6 B2 q! h1 |& g- Vto initialize-settings# O* x1 D7 ~& v, Y/ |

. z( H# J" Y' e8 x0 U- eset global-reputation-list []

# P- }* |4 A5 i0 P5 c  F+ P( i+ V8 W1 G
set credibility-list n-values people [0.5]

2 C$ P, B2 ^! V# I8 X3 ]4 P- t! K' D  a
set honest-service 0
" c2 [" O. m- w& E: g+ Y% @
6 E9 E( M  z* {' y
set unhonest-service 0
9 e9 U/ Q& J) h' K2 L
1 G. O1 |" d& P+ L
set oscillation 0

3 V4 P( _  i% ?. P4 a( [8 M$ j# O" q% Q
) V+ N4 l2 k" Y3 ]7 N& R# mset rand-dynamic 0

8 h# I1 P  {1 Y9 ^6 h/ ~2 M- O4 aend
! z/ K4 b( C2 T0 {1 A& @$ G/ g: U8 G' |" c
to setup-turtles
) ^" ?" b: F! q5 R& U- Oset shape "person"
& [7 ]3 F. S' Z2 E7 T/ ?$ l! bsetxy random-xcor random-ycor# t3 P  X! O) n
set trade-record-one []
+ j7 ?3 T" _! g1 s3 y9 g8 H8 M, h

  R; [: {) c2 K  Q: e7 t- \( c; uset trade-record-all n-values people [(list (? + 1) 0 0)]
; |  v. Z/ R; i. [  S% R/ D
" e( u) F8 {. {" K
set trade-record-current []4 W8 H4 z! q: X6 }6 f! k  `
set credibility-receive []% r# [- d8 H  i) h, n, [, X
set local-reputation 0.5
& j9 C# E4 S  l8 _4 ~set neighbor-total 0
5 `( q$ o6 Q' K! Vset trade-times-total 05 \) j% e- Z2 F; C  h, V
set trade-money-total 0
5 r5 h1 a% [5 ]' j  [set customer nobody
2 J: s- i, K: R& s. M9 O, Sset credibility-all n-values people [creat-credibility]& u) C' ?5 e6 ~4 U- R
set credibility n-values people [-1]
- p0 D% t: m! c1 d% c3 Eget-color
2 O* a4 {5 a- p$ L. \

" |8 {& ^5 E. s  f( }: Uend
1 U1 R$ ~% m# D0 t7 J
1 e( f6 O  O* [) _4 @to-report creat-credibility
8 t) C8 J3 b1 y. i9 ereport n-values people [0.5]& J. V$ l3 `% l: g: ]' w7 A+ C
end, ^/ a" ~" d) ~3 a* g
* N7 r) z' J6 h- A  U1 h- a/ I
to setup-plots. C3 g% G0 M* Q! J, o

7 V" Z3 A$ M- v4 [2 [set xmax 30
4 S8 A# e- g/ L3 \7 Q5 u6 k, v6 t6 y3 G
' T& n, ~  N' s5 x1 ?; T# s8 z- a
set ymax 1.0
5 m3 B+ P* Q9 f; ]& ?5 M2 V9 y

* p% I, v1 e+ b. @clear-all-plots
0 o3 Z, {: M1 T6 G( i3 _

& g% V# N6 y) Esetup-plot1
/ h, C( O0 i3 ]* s2 `) u  W# j, `

& Q7 q7 B9 g& \0 Asetup-plot2

8 g4 E: R. T( h3 _7 h5 p
, \9 t. b* A$ V/ K7 J: Hsetup-plot3

2 N) `, G  e& F4 y' x7 uend
2 @1 {6 w6 w8 e
8 }! c% W; @! z1 D# U6 m;;run time procedures
6 z; V8 g5 N7 `5 A, p, I2 s' r4 R& t& c
to go6 F- f$ T$ _& g7 Q* l
4 G0 L* \1 T, B8 c
ask turtles [do-business]

+ c! \; E9 J: Q3 b2 P( send
1 z  j6 u, o0 c6 @+ R
' u1 a$ ^( }5 C  X0 rto do-business 4 X/ T: A( }" {; r4 x- A2 _3 [
9 L- e5 g. |& R# |
$ t: q3 J8 U  s7 W
rt random 360
6 W! k, J) ^3 C  z- @- S
# a' r& D: ^( _9 \1 Z# ]$ T
fd 1

* t6 g4 z* m9 [" x: u4 J
3 E! [, K& d' f6 ?ifelse(other turtles-here != nobody)[
" B# z4 k, w% n$ a6 c* u! F9 [8 o, @
; h7 [) N  j. ^6 u
set customer one-of other turtles-here
' l( U3 P: f) o% S3 w
$ Z8 s: [# |% [* M0 W# P' c5 q% b
;; set [customer] of customer myself
# P+ z5 J( ^( b& Y- g) c
9 [& J  z1 q  d! L+ @
set [trade-record-one] of self item (([who] of customer) - 1)' w- D* H1 E  x, `  _
[trade-record-all]of self7 m; u! W" u. J
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 t$ g1 Z* U3 n: _0 R+ |  Q1 ~
: D: g* h1 I, r, Vset [trade-record-one] of customer item (([who] of self) - 1)
. h& M% o: [+ l0 l# a+ }7 s0 ][trade-record-all]of customer

3 a! z. `0 |/ u8 S& L# a% a
, E/ }. o: s9 Q  y9 n+ `set [trade-record-one-len] of self length [trade-record-one] of self
! ?4 a. D: d+ \$ S4 j( c# }* o8 W) I

7 ?' l6 j% {% m$ Y, [3 L0 dset trade-record-current( list (timer) (random money-upper-limit))
; B5 P, h. ^" D/ Y9 Y

$ N. u* ]9 L! Lask self [do-trust]1 M6 w3 c3 G* ?- u
;;
先求ij的信任度# f- v  I' Y4 ~% p5 @

0 e+ ^9 V2 ~" `  Oif ([trust-ok] of self)
8 k( b+ k9 ~# f1 R! Y0 G4 t;;
根据ij的信任度来决定是否与j进行交易[/ d7 @& T. C/ T2 v9 s+ m: c- |
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: O' @- _; ?& z0 X' V" q6 `1 i

* |3 @2 |2 R( H) K8 D9 j[

) q" B6 F$ X- w. g2 L, F& m0 Y# D
do-trade
3 ~- ^5 j$ P, n! @
( |5 [% X# l7 ~" n1 C7 ?
update-credibility-ijl
" E  l$ Y9 n7 R# y/ W2 {2 a

8 j; {. N9 Y. D7 y% Wupdate-credibility-list
' U7 \% Z4 O+ G# [: e* I

. B# f! ]+ w# I/ j% g7 _* Z2 X( a* G8 n$ t, P' P! q
update-global-reputation-list
6 i$ b' W! u' z0 N# M# P
+ }* C, n1 H4 M4 ~, m
poll-class
# i$ Q4 W5 v* j
7 j2 D! x# o9 g7 M
get-color
2 R% Y& s) O8 C; J6 n4 j- @$ n# p) ?

/ N+ k6 D7 a8 j& a5 k, E]]# o# [: _' I5 D/ `" J4 U8 j2 b: z
6 O$ [% `9 x! `4 I
;;
如果所得的信任度满足条件,则进行交易
- r: ?) p+ U1 F- b+ S
7 u4 a1 L6 _' J5 `0 V  y[
; x% y1 q3 q% J7 z( g4 M" w# b
% {4 C9 V5 b7 ?
rt random 360

! f2 r" ~* i9 o
& P! k- V, @- R$ `# y8 cfd 1

+ J3 f4 b9 U0 U4 V. K' Y
+ n9 ~* \: z) O* M]

- B, J5 r  b  y. O1 N
( A! R5 }. [7 Uend

3 k: E. L, W  D# U+ V8 X
3 x4 M+ h7 @4 W0 P4 H7 Yto do-trust
" l& p0 Z1 J5 d9 v2 ]: A( h4 Aset trust-ok False' G1 {4 X( J9 x8 j/ K( X5 I- O

' Z( [6 p  q& f
1 {6 Y4 x2 u: h* w$ x1 l
let max-trade-times 0
4 H- [( k7 V: B7 i7 ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 P  i) n/ e: c* U2 P" x, m2 I/ y% H3 glet max-trade-money 0
6 I5 f# o7 g0 i. t# [( Aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 u" G0 V; T- I3 Klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, V& o% b' i6 `, M1 V2 Q0 Y7 A9 S/ Z, P5 K2 j
- r7 }+ c: C7 A' z
get-global-proportion
  x& h% l7 k7 m9 _let trust-value. l5 }$ P, l- P- J& K
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)

/ ]: y  ^/ |( [if(trust-value > trade-trust-value)
& C2 F7 N& E: [. [( R- U( `  \[set trust-ok true]2 [& \2 \. y! Q3 U6 s
end. m9 h5 t2 _8 G% o, |' h
! m6 _) u. N* Z! P! }
to get-global-proportion
$ q' M  h  r* m( z9 {5 k7 fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 V# z* w- i1 X[set global-proportion 0]+ F8 k# e& I7 a! e+ f4 l
[let i 0) m2 `: y2 P* }! D6 x: r5 ], z
let sum-money 01 U! i- ^- i9 k: o
while[ i < people]3 f3 u0 t1 G$ |
[
$ P+ @# D0 b0 \8 x7 fif( length (item i; k+ V8 `/ @& x9 u: x
[trade-record-all] of customer) > 3 )
! d" W- b, c5 p8 V4 F1 S
[: |! ]1 j2 w1 M$ S0 e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! W! k6 O7 U& L$ Z3 {+ p
]! \0 ?, j% M! Z; b0 U
]$ [4 W; C" o' D! z
let j 0
" D* Q" r$ b- A) m5 x3 }let note 0
8 ]' S4 V* {0 p1 u1 Y) R, Cwhile[ j < people]' P2 J/ S3 I) S
[) f3 S1 e$ d1 W9 }" n
if( length (item i
! o. Q8 X* \5 [[trade-record-all] of customer) > 3 )

* a/ f8 J% X' [, ^) B) `[$ W' h0 b6 f  @: V+ m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 X4 @' {; y8 n7 `" X4 U4 Z; W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  x* C) ~1 T" a! N! j! U8 K& o' x" i' a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 e+ x1 W/ Y* l; i2 V) l& j]* @) x1 d9 l% b# |
]
3 T2 P! D! y/ L) E; vset global-proportion note
4 S* P$ H/ l1 a1 ?, Z]' P7 Q. _( t9 a1 c
end9 v" b; ^2 [* T3 c
8 X  D2 a- B: p4 R$ G) r
to do-trade; j" k* H4 |( j0 ^9 B
;;
这个过程实际上是给双方作出评价的过程
6 U8 q  _1 u. bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! Z, |. ]$ W0 u9 |- F: e' p3 w) H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, J2 N% r* H# F9 i) f! ]
set trade-record-current lput(timer) trade-record-current
2 c8 @6 W9 I2 l: m;;
评价时间
$ m8 n) g4 W& R% z: ^# \ask myself [2 U+ @6 B( Y, [7 b! T! l9 v
update-local-reputation& W8 ^2 D% k) t9 e* u1 {5 a: b
set trade-record-current lput([local-reputation] of myself) trade-record-current- |& p! X2 H' _2 ~
]8 c. G: Z4 s6 h$ ?2 P, u( z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; B: U- {+ g. ?0 i9 |, `, S4 E* Z  z
;;
将此次交易的记录加入到trade-record-one
5 n+ Y3 r# p) d3 i1 Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ ?/ h/ |5 ^, G! o$ d
let note (item 2 trade-record-current )
% P. n$ `5 k. @9 H( lset trade-record-current
* C  C* F- w6 e9 _) j# |(replace-item 2 trade-record-current (item 3 trade-record-current))
# P$ K' [% t  S- a! k2 B
set trade-record-current) R2 w, \) ]( d# L, n0 ~
(replace-item 3 trade-record-current note)
/ v# v2 ~" h# f. Q+ M0 V! }' {' C) D% p
2 O( }0 g) k- j
ask customer [
2 g. X; V0 \8 [. K! Bupdate-local-reputation: j2 Z* s+ h+ w
set trade-record-current
4 {: `4 t+ C* p" z! @8 N(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! a$ A! J" M  k. c& J7 g/ z]+ G  Z$ s% r9 [

4 D3 N2 b# a' u4 U5 V+ E2 v$ D; ]
+ K4 h9 n1 p7 Q# q$ d: l
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* }( l  l! r. V5 O+ J- T% x

4 O& \0 A/ B# Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 ?" C: U8 i' t. O) z3 [* w$ x: };;
将此次交易的记录加入到customertrade-record-all, ]1 _* W7 N' X) ]
end
, d  |' u) O! _7 A
9 A! b4 }2 }2 ~- K  T$ tto update-local-reputation
" e+ ~1 f3 x+ O9 q6 s$ g  pset [trade-record-one-len] of myself length [trade-record-one] of myself
4 A) e) f- o: k7 v0 x# \3 j4 t# B! O; r
5 ]/ x. Y* k  n9 L  J5 `
;;if [trade-record-one-len] of myself > 3
! {  U4 G6 I! K- K' T1 n
update-neighbor-total
' J9 j/ {% T% [;;
更新邻居节点的数目,在此进行
* Z7 M% e' Z+ D4 o$ nlet i 3
+ w. D0 V, K" U3 ^- mlet sum-time 0
0 [$ c9 t) {1 W/ w4 Fwhile[i < [trade-record-one-len] of myself]: S) G# D$ v0 e/ P
[
' m% a9 [) N' E. Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) ]' i- R& A- A  z4 l& D& N; i1 x. W# q
set i
( u6 @2 M: P: H8 |, e0 }$ u( i + 1)

  C9 b: B: S3 E0 q+ [* M) j]
1 Z8 W1 A! ?; x; p2 L. nlet j 3
! F7 t7 \  B) V' G: Q% |0 @  ~let sum-money 0
& @8 M- P% ~; q0 L6 o/ p2 b! @& U" Gwhile[j < [trade-record-one-len] of myself]  `: K9 Q4 v% k5 ^8 g
[# |4 j9 e& J' Y: l" A6 l9 w% 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)
" M/ F8 e* y( c4 ?5 J. _* D" ?set j: d0 T9 P3 N' \
( j + 1)
2 @* E. B0 d" K' t( u
]
9 V0 c& N+ i4 f+ ]" V* m* qlet k 3
, V3 h' I# g5 _& plet power 0- b3 K3 _) u  k# e3 k2 w
let local 0
/ V: L  {; w7 Z1 [. ^4 P" P7 vwhile [k <[trade-record-one-len] of myself]
  M3 Q/ {! i; i[
7 U8 j" O' |% J; W; fset 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)
  J6 {" C: H4 rset k (k + 1)9 A) l! l0 k: ]4 V# E  X, O* c
]
$ ]: P2 |7 u( {" @% g1 gset [local-reputation] of myself (local)
4 s: u8 I0 c. A' Gend* Y/ L: h2 _* J# i+ h

0 R* ?6 N) X0 r, N7 Qto update-neighbor-total5 {0 ?7 S8 n& w0 ?- e# E: ?

9 }) U3 X( b( v) t' E4 |; aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ u- W8 {( W8 Q& n0 F- ]

. g. s7 j* t: N6 @" |* x
, s$ H7 S$ p6 ^' _5 b# O1 R
end
/ `* _4 L  w( q8 [) H% \: {# m9 A2 l5 v" B" _
to update-credibility-ijl + S' p- b- {" Q9 h0 A2 T
& L' t* R- X5 ~7 ^6 g0 Y; J: g
;;
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。( I( {8 V8 K( @6 U5 k
let l 02 a3 W* u3 n' ~
while[ l < people ]( e. W- `1 Y8 y& w  ^
;;
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 u& [+ o3 d& ?) W3 ]
[8 b% s/ m" b1 b: [) M4 K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ b+ T' G- D+ F; V1 j
if (trade-record-one-j-l-len > 3)
+ z- z! U1 S/ j" q7 c+ K" t" x" y! A[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one4 Q, u' u0 S' ^7 t8 k1 L; |
let i 33 x* O$ A+ B; p. x% x
let sum-time 0
9 z2 L8 k: r+ N, K' Dwhile[i < trade-record-one-len]7 c; G) h8 v) w" K& W9 z# V
[
* H' o& A9 M. X& Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& t/ I" N+ ]6 [3 n! d
set i! }4 {2 J2 s3 c0 l3 `8 ~, |: H
( i + 1)
- k1 i: A$ m% N7 q$ ^" c% z9 Q, S5 x
]
) M7 g8 X+ f9 V$ _; ilet credibility-i-j-l 00 K- R4 K, U7 G5 M# t5 h
;;i
评价(jjl的评价)& G) Q1 U! \4 `" j2 n! Z) t, j) J
let j 3. {' f1 {" D# Y) r
let k 4
; B( n3 B. D& g" E- e) Bwhile[j < trade-record-one-len]
% o& m1 L. n! H, l[! L* F/ ^. S( W3 Z/ i
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
, C0 h2 r( T+ c# U  `7 E# Z# X6 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)
: Q8 V! r9 A+ y7 m7 vset j
8 r6 b" f  X; j( N7 K7 D: P; H' I( j + 1)

) F; |2 D" U# H5 g$ g]. @- G9 l0 h% K1 c7 H. Y. \3 j! i
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
; f. A! x: d* K9 L7 o& f1 S- }2 y/ I+ @% s% N

% L$ j- S+ K1 d' G- t) u) llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# M3 v& I0 `# R;;
及时更新il的评价质量的评价
" n6 ?  l8 h$ E% M+ vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ F0 s2 z1 O0 `! h
set l (l + 1)! j. _: c6 }6 J; Y, \" K
]
# h. l+ |! |2 P0 U2 R0 Uend
% f3 K+ L' m4 ~; C' o3 J, R& I# i! X6 u) g( m
to update-credibility-list
9 W' p$ v3 R' _1 T  T4 R8 Y1 tlet i 0
3 R+ r, M' T# Zwhile[i < people], ?. R8 K$ M9 L) H6 L  r* |9 k3 ?
[
# n0 b+ v  ~5 Y! S  n) Z' }- rlet j 0) K! |" R/ ~, |+ n; @
let note 0& I3 }: u" L* M, ~/ h$ G
let k 0
6 Q! m: w' |6 A* ?9 D6 Q;;
计作出过评价的邻居节点的数目/ [8 j7 _! W1 r" v6 j& d+ p8 b
while[j < people]
3 X2 D, u( d! e! a/ G1 @[  i3 P/ h& B5 N: g
if (item j( [credibility] of turtle (i + 1)) != -1)% ]. Y5 g- q) S3 b! V
;;
判断是否给本turtle的评价质量做出过评价的节点
  j! w" t( g- j& e& X[set note (note + item j ([credibility]of turtle (i + 1)))
$ W7 }5 }- ~6 Z# n  I+ ~4 i;;*(exp (-(people - 2)))/(people - 2))]

7 y' n- Z6 E/ g* z- n  cset k (k + 1)- t7 i5 ?' c2 I- G
]- z9 s* _6 L" \: J3 `
set j (j + 1)' l- H! K1 D+ s$ J5 ~
]+ [) f1 h2 l* ]. X8 z" Y. K  T$ e0 c
set note (note *(exp (- (1 / k)))/ k)8 K  x4 C/ C4 M' `1 ?2 g0 K
set credibility-list (replace-item i credibility-list note)6 s" i8 I; `+ ]% u; B8 p: j1 G# \
set i (i + 1)2 [! T0 o. C$ c
]
; Y0 `. \* Y9 ~6 nend3 R7 q# e; `' v( Q1 \: {
7 r! Z' I7 S5 G: g/ |+ W, x. j
to update-global-reputation-list& t! N8 S  G; g0 V. K
let j 0
! Q7 r$ w. _: V  y0 |; Dwhile[j < people]$ k2 Q" n1 q1 P, o' |' ]6 n
[$ A" g" |/ |2 y
let new 09 a/ C% \8 Q( L; d4 x0 S
;;
暂存新的一个全局声誉) \% D, [7 W& Q4 W+ S
let i 00 O3 h9 S( P. \7 V
let sum-money 0
; e1 B' H! E9 ~4 `3 Jlet credibility-money 04 a3 d6 L) E+ O! p! Z+ A/ N
while [i < people]$ {% Z9 {. J4 a2 n! \
[
1 c( J7 o* a6 {* T1 q& v* }set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' J  D; V+ c* g8 N2 z0 S, D, pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 K, T0 w' R  mset i (i + 1)
/ B3 Q5 m! N7 v: @' _3 j7 M( l  B]( B! K: q' e" N, ]' O
let k 0
. G: U( z0 m  R; x7 _let new1 0% K! v6 l; U& |+ {9 }4 _) p
while [k < people]! F: E( P4 k1 b, X+ L0 \2 g: \. K. N
[
' Y0 g& Q2 x! i5 z1 f, zset 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)
) i2 R% E/ R  X$ zset k (k + 1)
8 g6 W' i' ^6 O( Z/ e]5 ^+ f4 l; x6 ], D* L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" X$ F6 e+ b7 t) Y4 {9 i) Qset global-reputation-list (replace-item j global-reputation-list new)  s$ p$ Y; h, C  }1 B+ P
set j (j + 1)
" h5 r- U, B* B0 Q]
' j  D- ^- }- @6 }& mend
* v( x7 a" u, f5 H& m& q+ {! }2 S, c1 p/ I/ }- P& v

# b7 {  T, h* ~' q
, A; E5 L  A; g8 C; B& Qto get-color7 e2 o8 c9 ]8 F3 b3 q  Q: C9 U4 ]
* m0 q; G6 g& L1 t) a
set color blue

5 F7 W- |9 k; `/ q) J  Wend) ~% N1 C2 q$ @& j# }
, A5 ^; S, l2 ?) f7 E0 ^
to poll-class
/ I# |7 _$ i0 C9 j* E7 G3 e% Send: I' }3 X3 n& H1 h

- x- R; v( H( k: G. ]# D! ito setup-plot1# Y6 Z, }3 t0 [

/ r( k$ Y! q( R. `+ Mset-current-plot "Trends-of-Local-reputation"
9 S* v- C  }( w9 \
: e, }$ }, q5 M0 B* E% n7 |
set-plot-x-range 0 xmax
. c# @3 J: v, m' f+ u9 E1 o, D

9 ~. l& o3 p8 |set-plot-y-range 0.0 ymax

$ m) Z" ~2 Z5 Z" L' E) {end  y# e* q3 N7 b: ]/ b6 D! c
8 L8 \3 n) j8 ^/ Y% z( D# A
to setup-plot2  B- f$ n5 F% ^& A6 i

+ s7 `5 ]4 o9 e. o$ Oset-current-plot "Trends-of-global-reputation"
' ~; d% j: B  B
1 B- J. n9 |$ D) h0 U8 T
set-plot-x-range 0 xmax

# U. J, E0 ], L( l
5 q: I6 J5 J+ L. l1 }set-plot-y-range 0.0 ymax
3 y: N# E& S: m% F: }7 w/ f( J  r5 k
end% E; N" O, {  \3 Y
; E% ]& D5 ?% U7 P
to setup-plot3# `* M, F' S" z: a9 u/ q9 t2 G' D) B
9 I5 h% R/ l% F3 T+ K( x( B- ]
set-current-plot "Trends-of-credibility"
# z: c: d1 l% z* X

& {8 C# j8 }% E; C1 Sset-plot-x-range 0 xmax
$ O# M. I6 K- C2 K5 O+ i, N
4 w. |4 }% ?4 l9 Z* e$ D# z2 X( U$ v
set-plot-y-range 0.0 ymax

& Q8 \& s- w7 D+ V$ Fend
6 t2 i; [& `$ k6 n8 a5 t$ C6 k2 v+ v
to do-plots  H7 V+ d* T  |- [8 M( E
set-current-plot "Trends-of-Local-reputation"
( l; M$ D% a" N9 J' Pset-current-plot-pen "Honest service"
/ y8 Z- x% o& g5 r6 Nend! ~/ I3 x& f- n) p+ c* D

- M* i3 H. i9 n) R7 P, D( B+ \[ 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 M$ r7 j( n% h. u- a' F/ m) N0 v1 I4 D: C! @: d
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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