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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:
% V, U2 e! e2 M9 f) r. h& Kto do-business
3 P# h  E3 h; B' C5 z- s rt random 360/ ~9 _' Z. m5 i
fd 17 M; O7 n! F+ j
ifelse(other turtles-here != nobody)[4 D% M# ]. E  a* a$ o4 d" k& s
   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. x# p) E4 W% F5 V" i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 \; j& M; `5 d/ X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' U/ z# y/ v9 r  l0 o
   set [trade-record-one-len] of self length [trade-record-one] of self% N4 S) ^& |+ a+ q
   set trade-record-current( list (timer) (random money-upper-limit))
1 w4 q9 I# u# i, ]6 |' L/ \& }9 O/ m- u: {
问题的提示如下:; J6 t8 z" \7 _# c$ _* O
% n, U$ D4 n* h! A, p
error while turtle 50 running OF in procedure DO-BUSINESS. t+ }) o' }: X1 t4 n) ^! u
  called by procedure GO
/ D! [" [; F% T! u) |# FOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 i* ~7 q9 J3 l: s5 k
(halted running of go)
3 ~" P! c/ l6 n2 t- }0 ?9 ]
: o! |* N2 n* d1 b$ T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~~
/ @$ P- L8 ^0 _. w  V: k) s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
0 y& R9 a! P1 e  `  |* N+ yglobals[* d9 l. n: a4 f" i$ s
xmax
2 X7 `; C: ?, ]! h- z' l" ]) {+ Pymax
1 d7 K. D  R& k8 t. l1 Aglobal-reputation-list9 g4 h; |, s' _0 L
. L; x3 P1 p2 T
;;
每一个turtle的全局声誉都存在此LIST
9 M# E* ?1 A; o2 mcredibility-list/ _2 c- `& ~3 X8 a
;;
每一个turtle的评价可信度( w4 ~/ @, \# v$ X
honest-service
! [; t* b, c0 l9 i/ T& m7 d4 t* Ounhonest-service1 o5 j$ v) W+ ^, c$ q
oscillation
5 w) J) x: w! ~9 p. Krand-dynamic
2 o' m" c4 ^' A) A1 J3 f. \' A]
6 f7 O5 Q; ^$ r2 S5 G1 L6 E3 n+ V3 d: t$ V8 `, t
turtles-own[( [/ I+ d/ H+ }" f
trade-record-all
6 R/ @* x  v" y4 j; i6 `( n: m) R' };;a list of lists,
trade-record-one组成
; D& M) p4 A- u8 I: [# U& [trade-record-one
  v! [& u3 O9 i;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% c* H3 O. J# r
( m3 S, v$ Q5 `/ T9 p6 d
;;[
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]]/ E! d5 J5 b7 e+ o& w- M+ B
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]/ |; v  z* S3 y
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  J7 g6 c. S  U+ b# q2 Q- z
neighbor-total
. K( N( ^2 C$ i+ A- c! o;;
记录该turtle的邻居节点的数目6 Y$ T* t9 \: W7 P% V
trade-time
: u# e, W; {( N9 p" G' C* E7 p7 m# Y;;
当前发生交易的turtle的交易时间
6 ^- _4 B. u& x  ^- Q+ a' Xappraise-give
  A9 e4 t- W, S1 C6 m;;
当前发生交易时给出的评价
; J. |4 x1 o5 w) S  iappraise-receive; b7 O7 x3 C4 Q+ t6 I4 R9 g, i
;;
当前发生交易时收到的评价
/ ^/ M) J) ?, x) n9 ~appraise-time' |8 Y# Q# `/ B- J" V
;;
当前发生交易时的评价时间
! r3 _% R: \9 H  Klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉! Z% ^% i0 u  R- E0 Q1 e
trade-times-total
$ Q- o6 ^" O+ V1 k;;
与当前turtle的交易总次数3 }& h7 W/ g& A8 u3 K
trade-money-total) H# i1 f# u2 s& n/ l2 J" R! _
;;
与当前turtle的交易总金额
, ^5 c8 j0 y# B% R+ d: _local-reputation' Y/ f/ c) C; W
global-reputation
% y7 C* R; I9 q. l; q0 Vcredibility$ T  m$ X9 _4 b: g) m; `
;;
评价可信度,每次交易后都需要更新7 P7 p- {4 {1 G
credibility-all
7 w2 z! d9 m9 o2 X( 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1 ~8 c( z# c: J! X* t! u
! s% J& ?1 }8 H+ g
;;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" I! k6 ~" G% y7 N; n+ P+ S: y
credibility-one
5 Y& _3 j* j7 {" b! y( E/ W;;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
/ p# r, N- i3 l9 R. j: I2 D1 pglobal-proportion! h/ ^, P2 f; n9 O
customer
; R  x$ N- M# W2 `- lcustomer-no9 k7 G+ Z2 L' \9 e, x
trust-ok
8 `7 @# Q1 q* \: T& ]trade-record-one-len;;trade-record-one的长度
3 X$ a. {7 S/ O( h9 s]
4 Z- k, q4 N  n* o: {1 A
: o# K9 T! o( Y$ C;;setup procedure
) _2 y; v  J. B: S" S5 Z* u0 r' z. {0 r1 k! I$ m
to setup0 o: E) d. m4 f3 A% e
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ca

* x( c: A  V4 l5 t9 V) _& r6 O/ m7 C8 \' m: M
initialize-settings
: C( v% \3 ]- P) ~# J8 Q% D, u7 }
0 [, n, V! P; a$ ^
crt people [setup-turtles]
* \( p. K2 y4 i2 A- Z
* y. K  p# ~1 b5 [( W% ]
reset-timer

" T# F6 I/ r% P' A. G& z
$ o9 I! X1 D+ |# Ppoll-class

$ E7 q7 b6 M& u% Z& K
9 T" q9 M$ b& L* @; dsetup-plots

" d% E# h" d  v. N# A; h6 n1 B! P  _7 r( I
do-plots

) N! A; {7 N6 r" tend4 r7 b! Z  l2 V; u# x, M

. N! p1 B0 @% I  s4 ?4 V+ v  o$ zto initialize-settings
3 C, J8 i6 y9 p* R4 `, p& Z4 R
9 @: {1 w9 F2 y4 y  E* Vset global-reputation-list []
4 ]) v5 Q) B; ]+ Y1 `; _
5 z  K2 ]2 U& w8 U9 w# F& K0 l' z
set credibility-list n-values people [0.5]

6 x3 t+ x8 \/ t2 N( W) X4 `( K
8 K1 {/ n7 h$ F6 A3 Lset honest-service 0

1 Q2 ?4 z2 ^% x9 U
3 P6 L) x8 k$ T: @& ]6 S$ Vset unhonest-service 0
8 q1 p/ }6 M+ B# V# ^
8 [1 N) o- J: {+ h/ }' c2 ]
set oscillation 0
; ]# m! G3 h& X% k; ~7 u6 Y- {

& G2 C9 i3 j8 u  x- X) E$ ?# Y, q* ?, ^* dset rand-dynamic 0
; u# c3 J6 q& z- t8 o
end
$ [. U- B/ P. K" H' B$ z& c) S
# w3 k% M+ [4 X" l5 C! Jto setup-turtles % j+ L" c! O2 s0 e& L
set shape "person": E# B8 E# M  z( W1 e% E( F% A# B: `
setxy random-xcor random-ycor
# a( p! \& j1 c+ i; b0 ^* nset trade-record-one []* }% y0 _/ V: s& P1 ^/ x

' C% C$ C  q/ w4 \1 A; kset trade-record-all n-values people [(list (? + 1) 0 0)]
( H# f8 V# b7 ^! O% N8 m

% W2 l2 p/ `' b3 @9 o8 Q5 ?4 yset trade-record-current []
7 b! _! q4 E  R) X8 Hset credibility-receive []8 ?( _$ u4 s+ W* _
set local-reputation 0.54 f2 S" O8 _+ z$ M. \# `7 e
set neighbor-total 0, M6 p# O; F+ k1 Y7 F: {# _" [
set trade-times-total 0
" J' w7 [2 d% M3 aset trade-money-total 07 X3 i" }- C4 |6 h! c9 i
set customer nobody
' s" o. W. p. b  L. O! lset credibility-all n-values people [creat-credibility]$ \) B( B1 f/ C( F  @& ]
set credibility n-values people [-1]! X( Q9 v3 a8 B# x
get-color& ~; J& O/ S/ _+ i0 M, q) p; {1 F

% D1 ~! _3 R/ H$ ^4 _+ Oend- n. O: |  i; _- w
* L0 Q% D5 @6 F7 }
to-report creat-credibility, b5 b. Q1 a5 O) Z# }5 ~* M
report n-values people [0.5]
  d# @2 [! r; p: @! Cend
( W6 K8 g; o( y3 d' d! L, k
9 ^& v- Y9 u! I  Q  Lto setup-plots' K4 r/ g& N( J

/ z5 l0 r9 M' y7 X2 u. Q# rset xmax 30
. K# j- n- t# |" M5 b3 d# w

$ x6 M4 @. o* @8 }/ J& C' i& ~set ymax 1.0

0 C  S" l: s  f. V8 C& \3 M5 l
clear-all-plots
* x9 t+ N3 \. V" V5 h, G9 y

* ^$ l0 F' ]/ ksetup-plot1
+ f- |, E' V) s7 _" R3 S

  G5 N$ Y; x8 E$ Psetup-plot2
! c+ g; ~6 y  }' r6 J
; O4 T: ]% g, h2 h! V7 l/ m# o3 A1 K
setup-plot3

4 l* d; u( h  P' p5 {, C( wend
, t- z. E3 N2 V7 G- Q+ h, Z5 l
( C8 j; t: G8 ]! `. M# n/ p;;run time procedures
" N' K- p4 x' Q9 O! B/ \  V* v5 ?' S: a- X5 h/ B9 u: B" F9 Y$ ?
to go7 j; l- P8 S3 O$ l2 i

! }& N8 R5 |7 \5 G5 [( g: iask turtles [do-business]
8 z; c3 T; T2 c, k. Y+ H
end
$ O9 n9 H+ Q, S! L! V/ G
& e4 w5 P# Q1 P" J# ?+ n% ato do-business
# K. s9 g" O! M9 v# P
6 a" C6 S+ K( K+ t* y2 D# ]
9 |+ \2 S. G% W  R, y+ ~
rt random 360
3 R% E9 j# _5 L' w9 m5 ^/ n9 [
' g1 Z) e$ x& ~$ X* }7 J5 J
fd 1
  ?1 s; ^0 n: F: Q3 L/ B; i

9 {4 l% }* q$ O+ y3 V6 Zifelse(other turtles-here != nobody)[

; g: ?5 L. d, Z1 K. r0 C( i/ _
' D2 a- e3 w  t2 @9 eset customer one-of other turtles-here
8 b, j* _0 N' M  t) Q+ Z  m
6 H9 @7 }( ?: O* f, y  l# k& @
;; set [customer] of customer myself
+ W& Y! u0 s5 t9 s* J

! O) a0 ^% M0 U( @7 }! B9 yset [trade-record-one] of self item (([who] of customer) - 1)9 a4 V) E! r: Z9 f5 p1 C, E
[trade-record-all]of self: a# ~+ E- M' g8 x
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 S7 d5 V/ K& }! ~1 x# }, v( K) M# j

  i. D7 i/ P$ Sset [trade-record-one] of customer item (([who] of self) - 1)
7 x; c% I3 Z6 J5 a. B- w$ R[trade-record-all]of customer

# q" \9 x& ?: r4 W! Y7 D# g5 m) F0 J, j( c: Q# E5 n
set [trade-record-one-len] of self length [trade-record-one] of self
8 B# U4 Y# O9 ^6 B

7 D. e8 n9 b) G* v% aset trade-record-current( list (timer) (random money-upper-limit))

! U1 e' Y% R, F* b1 T* b6 S; u5 `4 g0 m, M  j
ask self [do-trust]
: W) L  q5 P9 T0 j;;
先求ij的信任度7 j  c" ~; j9 {0 W+ c
8 B8 `5 g, K/ L/ W" Z% r9 W# M/ I
if ([trust-ok] of self)* J7 N& y) p4 V  N
;;
根据ij的信任度来决定是否与j进行交易[
% _* A/ ?5 Q4 C; _! yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. T6 C. h1 u6 ^' i% z' O2 \. [# l4 x+ l5 M( }
[
/ F' m3 }8 t# w" V5 `! m% z& X

4 q& d6 Q) y8 f. {" E0 [+ y# ]7 r9 Mdo-trade
8 f5 l, g+ c% _% v

7 ?, _% w# `) o% z6 v5 uupdate-credibility-ijl

8 }6 K7 ]8 M, |+ Y) r4 _. n
7 d3 U. a2 e0 ~6 rupdate-credibility-list) L$ ^% h, P+ t
2 l3 n; r0 t8 i* S

6 b7 `( F: ?. I. ?, l, }. Pupdate-global-reputation-list
: J5 Z" z9 V; m4 W
, i5 x- N2 ~4 h3 l7 F% ~. k4 S
poll-class

; ~0 y/ G5 K( j% ~
4 Y: _, j$ @' X! S; Vget-color

* A% w/ p0 _& o, E4 A0 C, [/ O& V
]]) n: ]# j, t9 Z9 L

, q7 J6 ^* d1 Q;;
如果所得的信任度满足条件,则进行交易$ @7 G" A5 {+ {) N4 H  }9 b
5 F# g. r. j, S6 ]* `8 D
[

& q& p$ K: b$ T. W2 x
, `/ Y+ I$ @- {" ?0 trt random 360
, j3 Y' {( e- z; W9 Y1 J
' E9 I9 \+ j5 }) \) P
fd 1
2 Z9 N, [) _  N. J( q2 {

/ Q, b, M8 c5 \- s]

5 L) y5 L5 i! U# C8 b" v5 Z/ K3 e: {: g. X
end
" ?3 h( V; j1 \$ s7 L1 y* Q2 P

& o+ j7 }; h. e, J0 V2 Z$ Xto do-trust ; G4 T. _% \: y% x. |5 z( @9 T
set trust-ok False
# B1 D) W) s- d1 i2 K
7 ^9 x4 c( c) q' j
2 j6 I# }% i: a0 c
let max-trade-times 0
" l; X' v. n9 F% ?  A8 Nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( s. E$ h5 P' x6 N5 y, w
let max-trade-money 0
; [9 N7 l" t& H6 q) ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 v# B* ~2 Q" F, hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- j# `6 A; u& {2 b
  c, P5 U  |- h. a8 J2 i- P3 z
. m& ^, N0 w' ?. t
get-global-proportion
" i0 i0 s5 z, b) }! d4 c3 x. Ulet trust-value: V5 j1 p5 D  c+ T2 m0 K& R
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)
% b# Z6 T% p9 G$ Y" z* {9 r
if(trust-value > trade-trust-value)3 ?8 D: f" X+ a& v% W% y
[set trust-ok true]
. Q" l, {: i" x% T, F' L) g9 ^end- g5 ]$ B: ?7 O* v% S- C
1 n# c" u+ q# m5 E) q( @
to get-global-proportion
3 v/ B1 }% ~+ p. Y' Gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 j) D: }% w9 d% v( ^$ i# O
[set global-proportion 0]
: C# `" x  F5 x6 D( M[let i 02 t! F4 {6 n7 g8 I! B3 K  Z
let sum-money 0
! [, a2 m* ^" m& g$ [8 Y+ r* wwhile[ i < people]
- C4 V' d( Q  D[
/ v. x, M/ D' ]$ n( d# Qif( length (item i
8 v0 _: U( h. S) y6 W4 P3 X( F[trade-record-all] of customer) > 3 )
7 h  `# T  T. D! I4 P9 p" `, |
[4 u/ @% a& W6 ?2 _2 b( I4 u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. X0 v/ s, B! e3 \2 }6 n$ }6 n]
1 ]& W$ J6 P+ q3 g]* z- f3 j/ E6 p$ M/ S0 x- B, M8 n
let j 0, q4 T9 `9 z$ B0 V2 o" P
let note 05 x/ g3 z. `: N
while[ j < people]& A" p. N8 Q- n9 t  }6 N2 r8 k, _
[0 Y1 f& Y! \: N3 ^, D
if( length (item i  x1 C$ @- B7 l' U3 J9 `  M
[trade-record-all] of customer) > 3 )
8 n+ q7 G+ }( R. v
[
5 i$ m: d4 w' C+ H4 Z* G, n+ kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* y* t" r& E' _) [" }5 f
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: g, p! l/ b! J* q1 [: S8 z9 H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- w) [# y6 V7 v/ M' G( A! |& d
]- n) J, N& i3 q" s( d+ f) N- Z( F
]
9 h; q: T# H6 Y8 vset global-proportion note
0 [7 O$ A  L+ I. I]
: q6 }/ \& S, C& y" [end
4 F# x7 u6 i7 ]/ P# t% z. p: w. H& o8 ~. F0 {4 U
to do-trade
9 D" C/ [# B- x, c! o! |4 R;;
这个过程实际上是给双方作出评价的过程( H* k$ e- G- m: C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& d4 m+ r, h8 p6 k* I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 b' O- ~0 j9 K' g! \
set trade-record-current lput(timer) trade-record-current
% G4 X! k6 W# G- p4 F5 d: l; n* q;;
评价时间0 F: y" C' m+ Z
ask myself [
. j& f3 O8 v: L8 H# L1 Qupdate-local-reputation7 I- }8 u  B' L1 \
set trade-record-current lput([local-reputation] of myself) trade-record-current
7 r; \: x) u5 K; U+ x' I]3 l: L- b+ E* K+ C' `& K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 Q0 v6 e' p* i
;;
将此次交易的记录加入到trade-record-one
- }6 w) y  f& {9 P) b" M0 N* Q: Cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* l. F& R2 P8 m/ x6 A) T
let note (item 2 trade-record-current )3 N. v. y7 s5 q# w0 n% x
set trade-record-current, a7 A" u& l9 |0 d& |+ X, e
(replace-item 2 trade-record-current (item 3 trade-record-current))

& p2 ~8 M& u! j# Fset trade-record-current! i/ _4 {1 ^: U- G4 y& _- x
(replace-item 3 trade-record-current note)
' S+ h! b3 J$ `% {5 q+ V& u. f
+ m' s$ i  {% i5 s/ z/ I
ask customer [
% Y0 ]( @0 Q( S& n3 Y. x: vupdate-local-reputation
$ `2 t8 O- x4 u2 \3 q4 Xset trade-record-current# m1 @. L2 b! y/ ~% k' W
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ @; C8 G' c4 K1 Q8 p) `* z
]
5 E5 f* e' M& x( u0 l+ B, j0 A( J* h

/ E$ c* R3 C! E) W" @set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( X* r# v7 O( l
- e8 L% ?" y  w2 j  K5 i- Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 A3 C- [$ L' t+ U% n3 V
;;
将此次交易的记录加入到customertrade-record-all
! h+ i( z! d- |! gend
6 c1 x! l% ?' r8 z0 H" u$ Q" p! R2 n8 e9 t
to update-local-reputation/ s6 G8 P4 j  f( |) m
set [trade-record-one-len] of myself length [trade-record-one] of myself) Y1 Z6 K" G& G: W' ^

  R: F  ]& P# t! ^3 g) @' w
0 q' d( u0 f; F" w;;if [trade-record-one-len] of myself > 3

2 t$ w5 A; C1 u2 v' A* Dupdate-neighbor-total
8 |+ \/ M7 t, M  b% x6 E9 f;;
更新邻居节点的数目,在此进行- O3 ?3 `& S, H, s' l' Z. f
let i 3/ Z7 T5 y: a1 q- ~8 H! U
let sum-time 0
2 o. `8 v$ ~4 }1 e% twhile[i < [trade-record-one-len] of myself]' y8 f; b, e, v5 c1 ~% @
[
8 [( w4 C6 o# \- x4 A: Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 k* R$ e. N8 C+ u$ O/ X+ g) @
set i
4 m5 _1 F. D' Q/ t! c5 Z( i + 1)

2 T  v/ G; _; _* f]: ~2 ]' i8 D% U+ d  p) G
let j 3& t- `4 H+ ~$ \* m+ c/ R3 ^! v
let sum-money 0
6 V! a* C! g6 o) m% T0 @while[j < [trade-record-one-len] of myself]) H! a4 a8 C/ M5 t9 f5 u
[  R5 N5 j6 M) {; h! c3 F
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)
. ^! C6 ^7 }* W) [/ q; lset j
, R! e: C# T# e$ w2 D* n! F( j + 1)

, u% e5 u' @* U]
1 w8 f  U! \& @2 M0 i" dlet k 39 G$ C9 p$ _; ?( ?; o9 a% L
let power 0
; i3 I& x$ G/ l9 p8 e( b- W8 Plet local 0
0 d3 Z2 u" c) R  Ywhile [k <[trade-record-one-len] of myself]7 u9 X5 |- L( u% f
[5 c9 k0 P) i6 A
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)
: U9 W6 d( {9 Vset k (k + 1)5 Q" d, m- J8 X
]
- b; r; Z/ y) e8 bset [local-reputation] of myself (local); [4 }' j3 E% T" J2 _: x0 f1 |! I
end
+ F. @' ?3 h& B- J! A0 K3 \1 |5 U7 R( A) n) q* L
to update-neighbor-total
# w; U" i& [" }+ z* g2 N& ]& }9 s. K% X. `! Q+ [9 t8 I% G& g
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" j2 C; Z2 w6 G2 I6 F, [3 Q! \& ^( d2 Y$ }+ g0 K# w) ^2 H' g
$ {2 W, u2 S- U8 ^, Z; y
end6 Y2 \! ?0 T% y6 i. n! T7 S# I

7 I1 f6 W3 Y3 p! A+ p6 oto update-credibility-ijl
5 Z  B+ o& U) g" Z  ^$ ~
4 M& d- v0 g) A" c;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。. F9 n$ W7 r, a( N
let l 0
7 C0 q: R3 }6 }; z! g' a6 wwhile[ l < people ]
" q4 V5 e% f5 V1 p6 x& b$ R' [" f6 R;;
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  v: D6 K0 t( s) I
[2 H; p1 K2 t" K9 l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 Z  v. ~8 T( o( F  p/ r* c1 X
if (trade-record-one-j-l-len > 3)
! Q4 ~4 e" ~: w. t7 ^[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
2 ~) W5 w* F: I+ S0 C- X) k  Olet i 3
& K& G! ]& D/ m1 S7 Vlet sum-time 0
. X& U! Z2 \  ~  A9 P) ~while[i < trade-record-one-len]
1 E) j8 e5 \7 J6 B' K[9 J8 s! d  X8 @7 u' j: O4 ]9 B" i
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& ]- s9 z  D7 p; ?. pset i+ J' o2 Y6 N. d/ d1 Q) P
( i + 1)

3 F! w2 k- K# ~0 m  N1 Y) W]
  K7 D/ b0 K9 S0 s* \, G6 N' U0 ?let credibility-i-j-l 0
, a0 \" M+ p2 l+ E;;i
评价(jjl的评价)% {& R" A2 P6 G! Y% P- g* G. m6 R
let j 3# ]& e" g' L$ F3 S3 ]. E
let k 4; p( e" E/ t, G0 U1 r4 N
while[j < trade-record-one-len], Y' |6 J- C& o  [- P0 w
[0 W3 d2 U9 Q. e% v& Z  |% Z
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
% s0 I9 `: ]: N# R% |5 _7 y5 Y, Wset 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)! x$ v( T" `. X1 G
set j2 h3 Y1 I/ e6 M6 |( x( w
( j + 1)
7 d0 E2 {9 \# i+ O: ]
]
* |8 A: ~/ Z: G9 w4 n5 H. i( Iset [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 ))
" a: y6 V% t* _( o* O4 N- Y( q0 E; K6 V* |/ _/ z
7 _: l3 \* O- r3 J# Z  Z6 S( E
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); T% ~9 N' `3 c( Q8 ~. v  Q
;;
及时更新il的评价质量的评价
4 W; Q1 Q$ x- ~( x& g1 d+ Y  wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- n2 H; o; s8 x) \" K8 n5 R2 w7 T
set l (l + 1)1 Z4 A! |% A0 |# i: L. |
]
2 t$ ^- I' _- s* Rend/ j# c- P$ i5 s* v1 y  W9 u
+ O4 c7 B$ L6 q: y
to update-credibility-list
* ~. Q, N9 P5 k& V2 ylet i 05 j) @' x% N6 e+ y4 o; v# t
while[i < people]
5 W9 i3 j3 i' N- ~[
/ k& r  e1 N& qlet j 0
1 |+ F* \* D4 L$ Q' U0 P8 R9 tlet note 0
# `, f0 j- Y2 P  \let k 0
) U- e! `) r0 G. w1 H9 D0 e4 B9 ^;;
计作出过评价的邻居节点的数目
/ n( @* j. ]7 _" _1 Mwhile[j < people]
) ]4 M& z0 J8 W. u; ][, R; v: j0 n, V! Q( B
if (item j( [credibility] of turtle (i + 1)) != -1)- r: |& m, s. |! k3 U  O
;;
判断是否给本turtle的评价质量做出过评价的节点$ b% ]: \; N9 t  l  I, o
[set note (note + item j ([credibility]of turtle (i + 1)))
* x7 ]" I8 D5 D  b, Y;;*(exp (-(people - 2)))/(people - 2))]

4 a( t! L& U3 W5 w* w5 Yset k (k + 1)
0 X. {; ^$ S7 [; u7 M9 {]' \0 o, y. e6 J" z6 f
set j (j + 1)
5 v' N# R/ @2 V8 w& {]
. M: S7 M' Q. B+ [! ?; G0 t3 w- f# I! `set note (note *(exp (- (1 / k)))/ k)
% D- ?9 p2 N! k1 f" P- C& L+ [: Bset credibility-list (replace-item i credibility-list note)
, ^* C, ~) P, k; |set i (i + 1)
' H( G% ]4 \0 c; V5 n8 []
+ W  b. g6 ~. g9 i6 G' w* V  W* e9 Tend
9 s/ S0 g  S6 T2 T: d% F; G' ^6 D4 W
to update-global-reputation-list
) d# x6 `3 f  w6 M( E, ~- Clet j 0" S; B$ W1 c$ Z0 Q, Y# e' i
while[j < people]
: u  `0 q6 E+ {4 Z  V[
. _8 e) K; O% h) Y: h$ J4 Clet new 0( u  k0 y: c9 J1 Z0 O5 Q
;;
暂存新的一个全局声誉) _% g( {+ y! d
let i 07 I8 c4 f& X& i6 v% E: X2 k
let sum-money 0
$ \/ P2 H& J. O4 ]) [let credibility-money 0
0 i2 A4 |9 n$ D1 Y; D' R2 R4 h3 K# zwhile [i < people]
9 g( q" ^. m8 o% b[
- l! l* ~0 q, J" _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 y* @, l4 y" ^, q+ \. iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 |6 ?& x- }0 d9 k
set i (i + 1)! l( T: c% B0 ]! v8 _
]
6 O$ M4 v2 t' b: X! n4 Jlet k 0' A* m1 L; h- J( B' i4 A
let new1 0! i/ ]8 [9 T9 K5 Q  ^3 ^
while [k < people]
! x8 _% O0 x2 l: L[0 J2 h2 f/ D- g* H/ Y. z0 s# Q2 b
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); ~0 k5 P8 B/ A9 G  f$ X
set k (k + 1)) X7 ^* `; W3 Y  C- ^
]" C) i1 r. F9 Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 l6 t* Z$ e. g8 i9 q0 k/ {set global-reputation-list (replace-item j global-reputation-list new)
. [! A0 U0 V' aset j (j + 1)
% O* J& ~' X( T$ ~- h]
+ n$ W9 \  l* y! Lend
( {+ [& Y9 j6 e9 F' f0 [5 Y- I
* i& w0 M. M7 q% \9 h; h# j; I
/ G8 S  P2 H4 }! l& x8 W8 J3 t6 L8 \( A+ `
to get-color8 s0 Q* @- R8 O) G
- l  u0 c; B* b* @. i  m
set color blue
- _9 B6 w7 g* L2 D. L- y: g
end
5 M' ]! @1 s7 O3 K# G
5 `1 }3 f; Y/ M5 ?. ~/ q8 R/ Lto poll-class3 ^& l5 Q/ [& R. M( h
end/ H. {2 [7 o5 a( _

* H  o/ X, `% n+ H/ H& E0 Jto setup-plot1: |; U( R+ c/ ~! N, G* W6 O& ]% U
5 g2 c+ s' L- T) G& p
set-current-plot "Trends-of-Local-reputation"
5 e* p- w- E( T, p+ u
% r3 a* f' e- d; t1 s6 `* D
set-plot-x-range 0 xmax

% i5 y% R, d9 R/ K# k* g# o) I# [  l% D$ I
set-plot-y-range 0.0 ymax
: G7 p# F- O$ O8 K' G5 k
end! D4 u4 K! z9 u, H! `' T% [1 U) w4 l  I
9 A, N# ?! y1 w3 N( g
to setup-plot2$ `4 r; a! m3 r+ I

7 r9 C& _5 z' Zset-current-plot "Trends-of-global-reputation"

! y, z5 @' k8 _2 [* n) _) }" Z
% ^8 Y& G( q5 q) m/ Rset-plot-x-range 0 xmax
2 r+ G6 C' s2 ^, f

7 b3 \' F8 U) f, D( m7 vset-plot-y-range 0.0 ymax

7 ~. w/ n& J6 D" n5 n/ @end0 J( U$ t; A" U7 I

4 K2 z9 ]6 [/ S; \$ ~: [8 k) Ito setup-plot3, j: [+ A* e/ S- Z
+ f; l$ }; Y2 W' J9 z0 H5 b; p) n
set-current-plot "Trends-of-credibility"

# u) _' |& y9 y' h/ f$ @
6 m2 c. g, h% J4 ?- bset-plot-x-range 0 xmax

2 C; b9 x. K* y
4 Z/ }2 g8 T( z# T( C; D; {7 o' e* {set-plot-y-range 0.0 ymax

! M; y& j  t/ N6 Aend# u! ~7 ]/ L3 m( O4 d
0 t- ?. N7 N4 t/ k
to do-plots" I  s2 J5 S) T% v$ P8 L
set-current-plot "Trends-of-Local-reputation"8 m" ]+ M$ l, L4 Z' W3 D2 l
set-current-plot-pen "Honest service"
. b& p4 F4 c2 V+ L$ X+ j! L. H+ Hend/ I( f0 q: W/ ]( s' b3 e2 o$ ]' d
5 _" k" x! s6 x% z3 p( G) T4 y
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.! F+ `1 F% O1 x
. s. t& P* K; m1 w, v! ~
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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