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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:8 S0 `8 c, ]' L( K9 Z! G# T: {
to do-business
! t! @" V! r. J6 m; @( A0 j; M rt random 360, I! E5 o* l' S/ P8 i% E0 w* P
fd 1
8 a3 |& ?, [' e: a ifelse(other turtles-here != nobody)[
. O9 {9 T2 Z+ W9 p6 T   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.
3 ~; h( i' s- k" Z+ J5 v   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 H! u) V% ?6 G5 V) o
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% X, Y! t- b3 ^7 }7 w: E   set [trade-record-one-len] of self length [trade-record-one] of self
) x0 H4 A$ H* e5 ~2 C& r# z   set trade-record-current( list (timer) (random money-upper-limit))" g% X& }& z+ v- u% \( E1 a9 ^
) M) J) H) Q3 B( X
问题的提示如下:' u8 E" d# j; o; [& n5 w+ S" _

7 J* ^* i/ d3 }. _3 p  Uerror while turtle 50 running OF in procedure DO-BUSINESS
& G# D; J" J) N% O9 E  called by procedure GO7 g6 t; h8 W, G( j) T: X+ ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 d$ r, c& F6 J- U4 X+ c
(halted running of go)( b" O, t8 `& {: I' i8 W& G, \: d

! ?8 [% _- \. U5 d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~~
, ^2 w9 [3 J$ X  |: A% r- d6 w; |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
7 h4 c1 }8 |  i7 e) w  yglobals[5 }9 F$ S5 o  k2 P
xmax
. b2 r$ N' |. J% u" uymax
8 k" U: ?0 F, }/ Bglobal-reputation-list0 V+ x0 S$ f! L2 @5 g! F
7 R! U8 L9 Y% X5 ~$ H% F
;;
每一个turtle的全局声誉都存在此LIST
' C/ F0 Z( K; z4 A, `& mcredibility-list
* n9 d+ g, c- B3 W: m;;
每一个turtle的评价可信度, I+ S& J6 k! H- L
honest-service
; x: g% w: R8 X1 }unhonest-service' G* h" C6 @# \* B+ N4 `( |
oscillation/ }4 g6 b- @& P  |- o: g9 g
rand-dynamic( ~- p% Q' a2 \
]; j' s$ e. [9 a6 p

' c* l0 k; t) m, kturtles-own[
5 W* D6 R, g8 u4 E7 vtrade-record-all
& k" G. d( V) D;;a list of lists,
trade-record-one组成' M& h" o+ \/ Y0 q  Q
trade-record-one
2 C# i4 L, }& h) X; L& ?! i) z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 h/ ^/ h" w4 e" v

0 {  C2 ?; D' W- X;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
+ ^2 z; ^+ z6 R6 [: O& [: xtrade-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]
& v9 z% N5 {* s: `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! l2 o% r  z; p
neighbor-total: J$ n5 R9 L7 C3 t' Y7 z' d
;;
记录该turtle的邻居节点的数目' K& D, k" b' ?* m& ?' Y9 Z/ F% [
trade-time( J2 H' b9 [/ _" W! b! A' `
;;
当前发生交易的turtle的交易时间. c/ E" L( }! D, B: s
appraise-give& a7 p6 f( ?. e. }3 ]: V2 M, e
;;
当前发生交易时给出的评价
# C& A6 M1 `7 k' b6 v1 Happraise-receive
, X+ G+ p2 r' `5 S2 A;;
当前发生交易时收到的评价
7 H0 _+ [! [" I% w+ m8 }appraise-time
+ @! e* f5 ]+ G9 B) D( w;;
当前发生交易时的评价时间
9 w4 {/ N( ?! ]' G+ Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉5 }1 U& G( X: q" _" R% N/ X
trade-times-total4 K( G( W8 T% `1 D$ m- b7 a
;;
与当前turtle的交易总次数
& k; E/ k, ]5 strade-money-total( B0 |9 P" K# L; m! h
;;
与当前turtle的交易总金额2 B" s$ O3 P  o. T/ e- Z/ C
local-reputation
7 O& N; Y1 `$ uglobal-reputation# M1 T: M( t' d& R! d0 F
credibility
  Q- c! U; u) p;;
评价可信度,每次交易后都需要更新
& X5 V' ^2 H, B0 Ccredibility-all9 `5 ?! @3 u& o# l
;;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
' ^( b# j$ ]8 {$ g7 N& |
) v' S, P3 V/ Y# B6 |: c. u- @. E;;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
8 z1 F, x7 r" R& ~credibility-one" Z( M* c$ }* ]2 w, l$ g. p, E- @4 `
;;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
  _( b9 C5 f) B* B2 c& T$ j$ Iglobal-proportion; Q2 h. \9 d# ~2 `
customer
5 |7 O7 `. [+ S8 Q- X  Bcustomer-no3 `. t4 o! x) b8 i
trust-ok
" m) t. p- I5 N# a3 h/ btrade-record-one-len;;trade-record-one的长度0 ~' k+ c' i5 `+ j% N1 U
]
$ Y4 t0 J* g1 K: \* x- @- \: g0 V$ I1 c) Z- V
;;setup procedure
5 }- s$ a! v5 b+ r  F0 G+ b6 s; i: ?' D5 S0 W* ~5 u
to setup
7 t0 h1 N. V( v/ q( @3 y+ N' X2 v0 g
ca

" b6 U$ i& t/ s+ c+ E& B
% W: j4 T+ K4 ^& w& x% ?4 hinitialize-settings
2 F/ v8 k! p5 a# `& x" p' }

' z4 O. V4 V0 I$ Q& Mcrt people [setup-turtles]

5 y! h6 T' x$ X& k1 g1 T4 g! ], t1 s8 m7 @- K& V: l7 G
reset-timer
9 Z1 J; @- [/ C
- {6 }4 s2 g# E0 Z! f' W) F6 i
poll-class
- L2 b. Y8 n6 O/ j2 C7 D
& t7 }: f9 S5 t5 Q  S2 v$ D
setup-plots
+ S* A8 N4 s$ R
7 Y0 E3 E% J0 M
do-plots

' q3 U2 R1 J& A. u' pend) z3 L. o6 ]4 ^% \# b1 `6 L7 f

- u/ y1 b2 o: |! P9 h; m- I6 `; ]to initialize-settings
1 y% k% e2 Z: c8 L! B0 f7 {9 u* N5 U
set global-reputation-list []
6 x( o4 \: [2 w; }8 m' N, A( x- Q

6 i+ w; i0 v7 t0 z$ Q8 Tset credibility-list n-values people [0.5]

6 l# V* t& d# v. W7 z; H. U: n: ?# u* w, C  N: h: O+ _0 F8 a" J- c+ c
set honest-service 0
- ~' C% y9 E) w/ z4 Q% y6 Q0 }
$ {( ?- y7 @1 x" R+ r
set unhonest-service 0
: Y. a% q) N9 Q8 Q! P, b  n

: W; D5 {3 d) M# ?; _set oscillation 0
4 K" i- M) {9 P7 z
" l' e& R2 I3 W# n% g7 O! L
set rand-dynamic 0

1 a% I4 r! t: r: `2 Send
) v6 n5 Q' g! R" X1 h( f
3 l! P0 d3 u  n" g' l8 s6 @to setup-turtles
9 d$ a0 m0 t4 b9 hset shape "person"1 [; w0 u5 g' K0 s- L
setxy random-xcor random-ycor& r! f) q# [* A  V
set trade-record-one []
/ B1 t4 M, j, B( `& w+ a

  g4 R) b; {4 A% jset trade-record-all n-values people [(list (? + 1) 0 0)]   S- ~3 D" h, L1 I

9 S( _8 F, c+ y: c# p8 {set trade-record-current []
  Q7 q: R, D! f8 ]* Z8 T  ]set credibility-receive []. R* P% v# u/ q$ M
set local-reputation 0.5
7 p7 A1 Q, P/ uset neighbor-total 0: J0 I1 S5 s' s3 H! C8 f
set trade-times-total 0
! f, O' k4 d! _' [) _: iset trade-money-total 0
6 ?# A: r: _" e/ uset customer nobody
+ Q, U! K$ [* d$ m3 x& dset credibility-all n-values people [creat-credibility]
! T8 s0 c, D& S: N9 m  @2 q* eset credibility n-values people [-1]- ?1 W4 N8 r, q% c: U$ _7 x5 E
get-color4 h( V8 N0 h) {' H3 f. _
. R7 Q- p+ N! V$ X4 b9 B/ G
end) r% N" W; I" R
% N: S7 Q- `% G5 x- O) I* G$ D
to-report creat-credibility7 p  @: d- \7 `0 p5 S  T
report n-values people [0.5]
& V. J' e* _, ~1 D* d; L5 _end
& Z  I+ u( S! e) T+ P1 n/ Q# A& e7 G- V
to setup-plots4 J) j  q9 K1 `+ a4 a% k" F

- l3 F$ P" x  F% P5 ?% pset xmax 30

& P9 C& `7 t5 y# \/ {& B% P* L8 H+ E0 L  W4 n& L
set ymax 1.0
1 c! `; f0 z: h/ t) i" q5 I% F, u, b) k9 o
  u; }, g1 g/ Z" V% T9 B
clear-all-plots
6 B2 ]: k6 _. l" }

( l' I0 ]; k+ Lsetup-plot1
" X1 A0 m; l$ C& J& V& Q2 ~& O$ B

& }) p" h0 M' y3 W. ^8 v4 Psetup-plot2
7 B# J8 p1 x7 d' r

6 r/ F. ?! \6 B' y- b$ L4 x/ n- psetup-plot3
+ r9 m4 H' |/ S' P2 f( X1 P* p
end
0 Q; f' ~. [* O$ Y* z6 y' l
5 B+ L# M* ?/ U5 C4 E;;run time procedures* l5 y" O9 W6 O$ J/ S1 G9 i

( I9 `; n1 x  bto go# P- s5 Y+ ^( Z$ T0 y; H
; B4 d) O1 S! P! G
ask turtles [do-business]
2 J  a- ]4 Z( ]& d% [" l
end
! H6 |3 s- w8 b$ o7 `, U3 K. l4 r& T
$ [7 X1 C5 p5 K" S; }; S7 l- _, hto do-business
1 \& S8 T: J. G$ R/ W- x
: ?! H6 `" \4 ?; x0 Z2 C/ @% Z. a

4 V, _' f' s7 r. Y) p+ o4 Lrt random 360
2 \% l  e  j6 `
# O2 J( c! O, d  }$ T% d* R0 r
fd 1
2 k' t- n+ ~, \* P4 t( Z

9 O7 F: \: W* |5 Difelse(other turtles-here != nobody)[

) E: _$ N$ M/ ^8 y9 H1 l, p! ^6 v4 h) W. `: O# S' p: S2 c
set customer one-of other turtles-here

( a+ @3 f4 ?# C0 O! ?. I8 ?
3 _5 E7 ]3 T0 D( G;; set [customer] of customer myself

( |4 G- J8 L. f# m8 @/ z6 \; \4 A: H; r& ^4 r
set [trade-record-one] of self item (([who] of customer) - 1)+ _; S7 S( T6 E; w) L- s
[trade-record-all]of self  d; ^3 L2 H+ X' {0 d$ D
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ O/ t' Q$ m4 s; W

. S5 ^$ a3 {) h7 d6 ~set [trade-record-one] of customer item (([who] of self) - 1)! w1 _  Z! R2 C0 G8 H! x  Y/ W
[trade-record-all]of customer
- d7 \  j' Q5 Z# h/ P. n7 J
7 _& K1 _( h- E4 _3 w
set [trade-record-one-len] of self length [trade-record-one] of self

1 x/ v6 A& B5 u$ r  v9 G8 T4 D" w3 w1 k: u% C
set trade-record-current( list (timer) (random money-upper-limit))
7 D+ M% B4 X; J) H

( z9 M4 R/ D% R7 }ask self [do-trust]4 z& s1 s. _; |! H
;;
先求ij的信任度; _  c( {6 z3 N1 q$ j' X; k, K. v& n: C

9 `0 v' I( e( S- }. J- r% p# ]if ([trust-ok] of self)& T" d, j* K4 z$ r) {& p
;;
根据ij的信任度来决定是否与j进行交易[: t4 `( K! e) p& n' C/ [. D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 w& `# b; Q* X) @6 w

& N+ \4 q7 T0 b9 P$ [+ G; S[

$ E' J9 n" [! |* ]4 v+ G) ~
8 B' p% W$ m; F5 z  r9 jdo-trade

* x+ f4 l& w, K3 _9 d/ X8 f1 b& N( ?+ ^6 o8 {- j4 j3 ~) w! W
update-credibility-ijl
4 \% _! F4 B' ^2 ?  o* S% q; q

/ _( ]# ~; I! w/ Z9 H$ y) Cupdate-credibility-list7 f) W+ M# u. ~- ^

3 @/ i; s3 X0 {* q8 B! h5 f, e8 Z! s
" x/ Q2 A( |  _+ }& H' S# K% B9 yupdate-global-reputation-list

% z- w' r" A9 p
/ [! b; G1 H$ l1 p% Zpoll-class
( [$ Y, [; A: b- u, W

; S. Y: q3 C1 X  t! }9 c- oget-color
$ o1 r) W$ P4 u+ v# w- R- Z9 {

4 G5 {8 `- f3 q* E]]! B- k7 v! A7 U" \

! \; H$ h/ k( S3 C& S;;
如果所得的信任度满足条件,则进行交易3 Y; O5 v: \, c; p0 F, e

4 e2 f' c+ h/ w6 q[

; v" {" _3 g( {, y; w  \2 A( P, v* N- x' z# C
rt random 360

/ F# M  v* m) @3 e- y: X) `+ r7 s$ ?. k+ A1 L
fd 1

2 H$ P% S' _4 P
# z  }; c" I8 r/ u% M  F6 l  n]

/ g6 t4 c& B6 C9 ]2 m+ e
$ f- ]8 A$ h8 tend

& c" I$ }( ?7 P1 v5 z
3 {9 c$ _8 k1 ]+ S" x- u  Q9 `; z" eto do-trust 7 Y7 D, y5 _% [$ ^$ T! m: f. \( F) {
set trust-ok False
. H; \# C* h) D, u- j: m! u" ?9 R
3 t5 a& G; X; B0 |$ X# y; ?3 [
( \; v! W4 C( L0 w
let max-trade-times 0! s7 a; r- c( y3 A
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ q5 k: M; j2 Z3 j9 S
let max-trade-money 0
7 j% W5 i! O. S  w1 f* S: {; iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 ~0 D" {) C  N7 g! _5 Y1 C
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ D/ W7 \7 F* S8 c
5 `/ G/ I1 v2 n% o% `# h8 E

* A( N# y  S) D: o2 t% @! y1 W% {get-global-proportion
: G+ t( S+ \9 T  Tlet trust-value& _4 g: _; u: d; {  H6 A) x& 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)

/ h/ w) N" x: p6 fif(trust-value > trade-trust-value)3 s/ v/ P- h0 Q: V. |# k
[set trust-ok true]
& j3 O& W4 M$ _  h1 {end
" |8 C  O& o4 m/ \- K: x& [) T1 H. V2 Q! d) \* \- d1 Z
to get-global-proportion
+ ~2 t9 H+ y$ b0 D& p6 Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 D- V/ E  s! K[set global-proportion 0]
: o5 p! `; x- n9 E6 d5 d3 u[let i 0; A8 |0 ~: i' o* b: l, i9 x5 B
let sum-money 06 C9 P. W% ]% E8 j6 n) R
while[ i < people]3 u" W' U7 o! {$ j9 U) Z
[6 s: l) a& W9 I5 _. c4 l
if( length (item i  K4 a4 n. o" c6 S4 x
[trade-record-all] of customer) > 3 )

' B) a8 t3 J4 {9 i9 a% ?; J7 }[
$ H5 ]" J# d6 K& h0 e9 H: pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: E7 O# I# ^% K" O]
3 o; u* V. e( M4 e8 l* m]- H6 Q+ [7 d/ C" _# c
let j 0
2 g& Q% M% P  \let note 0# ~6 c8 t) g0 ^, F) r2 r
while[ j < people]
0 G+ ^9 d! F+ M% O' y' f[
. c2 }' c2 }2 u' n3 cif( length (item i
2 D+ ]) w& Y2 V  i1 t" g  ^9 Y[trade-record-all] of customer) > 3 )
3 A: |$ d" j2 ^$ Y! i
[
0 F- `# ]9 n- G, W4 w# \, H, lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" M, H) F; w  ~1 E& d4 \7 d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" p7 s% x1 J! D7 }- t4 f2 e  f8 o& e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! T: D$ n( }3 K# W1 z
]% s6 c( V6 G8 }' c2 k; t: _
]
& g. s  M% M# q' ~% nset global-proportion note
1 [& Y! l2 c8 g' L5 Q, s2 V]0 V2 P2 t; k% c, O. O
end
. v6 t. x- R7 o1 r2 [/ E- R- U% _( \& X
to do-trade
8 b7 n8 [6 V0 L! \8 `: k; T;;
这个过程实际上是给双方作出评价的过程
+ g% p  e; u* h1 i. lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) @1 Y( s0 F* ^  c9 ~& T: F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" F1 H2 o/ |. q3 n
set trade-record-current lput(timer) trade-record-current
5 c- X! B; F( p5 i;;
评价时间, A; }/ `- j9 x3 _, y
ask myself [
6 n4 e$ {& ?/ M& ?% F" W0 Xupdate-local-reputation8 j/ l) E( d' e) P" b# L
set trade-record-current lput([local-reputation] of myself) trade-record-current3 P' k4 |: C) G1 p; n7 \% V
]
4 Q0 W. m4 n$ F  eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* j6 |1 E6 ]/ d. _! T  h;;
将此次交易的记录加入到trade-record-one4 |/ G: g( a* ?* P$ D( U$ n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), B2 x' J& ?9 _, x
let note (item 2 trade-record-current )
$ q8 d! E% C$ Sset trade-record-current
8 E$ Q* l& R) V- Q' K1 S. M' e  H(replace-item 2 trade-record-current (item 3 trade-record-current))
0 S4 x# _" p/ o+ n0 r/ T$ y
set trade-record-current* N8 }/ S1 ?7 ~% s2 V2 o0 Z& h3 g
(replace-item 3 trade-record-current note)$ b  f/ F3 G3 N( n' k9 ~1 K

- X  w' L" H+ }
: r9 ]- R1 `; `0 G9 v; E
ask customer [+ Q: P) f7 E- I4 w
update-local-reputation& g: f1 `2 j6 r
set trade-record-current
/ \7 a; k& F5 ]9 n3 Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. F6 p+ \2 ?6 {  W8 Y3 S6 r]& \' W7 p' \4 f$ a: z& I4 l

& [8 k( `1 u4 L3 e9 e

$ M! B+ G1 f8 V: qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 ]( E" r  H  ], k, P, J. x
2 S! z& \$ W5 Y! K' y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, N9 P: h% f6 {% ~& M; v4 c;;
将此次交易的记录加入到customertrade-record-all
$ I9 M3 X, H, J% t$ k/ Zend) x0 u, \; _" n! U/ l/ L. v
( h" f8 U6 Q8 E, h; k5 {; K  n
to update-local-reputation& x& g& k+ D5 S$ ]
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 K& q; ]( S1 V+ X6 B8 p
- y  O. Q1 p3 y& u& }. K' z4 P0 G, Z
;;if [trade-record-one-len] of myself > 3

- q" G# R) r& d' Oupdate-neighbor-total
2 o8 P1 F3 [# w5 Y7 a2 E( |;;
更新邻居节点的数目,在此进行; |2 W# t& H( l: s* i6 v2 g3 Q
let i 3
* n: s) i. R( \+ C! c3 P3 Jlet sum-time 08 _* R& ^) V* d5 C. Q2 ^
while[i < [trade-record-one-len] of myself]
( _8 x0 `) L% B. r; v. f[
% B1 s6 {) n. V) B( D1 x( H5 Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- X$ J0 _/ x% y$ I7 P  K9 k
set i' u' K% i9 I3 H3 K1 N( B
( i + 1)
: I2 H& v( K1 C# L' W
]
7 m  G5 Y1 v8 q3 l7 ylet j 3
% `/ A0 t& p, v9 ~4 Zlet sum-money 05 z  a% n/ R& m+ d- S
while[j < [trade-record-one-len] of myself]' a4 f3 e' h" B+ `
[9 c+ |# O( o7 @6 C
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)  I7 k4 `& J" O; C* n: V
set j
+ b: c( W# k$ b* W" ?; [( j + 1)
) D: d& H# o% f! X. m
]% D! n* E4 |# [* i- o/ O. I: \2 B
let k 3+ W2 R1 F. {2 P: b: ~
let power 04 a: C% T0 S7 @; V+ X  `! l
let local 0
  n6 y) f6 M" ?5 U4 Z4 _) Dwhile [k <[trade-record-one-len] of myself]! y, k+ ?" I& Y- ]" D
[
0 R8 W( U0 w+ o9 z* D$ l' rset 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)
0 {; T/ D1 f# @: p: [. Rset k (k + 1)
/ i; ?! ]0 u+ t9 o& u]
7 e+ q8 @7 Y/ X% s2 fset [local-reputation] of myself (local); Y- `/ U# @9 C8 p! v+ d, ^
end
% d) [( k: A! q8 ~6 I5 x1 h* r0 O1 ^- r* p4 @8 J3 L
to update-neighbor-total8 ~1 ]. R/ T( h

, i( p4 L( u  ~, C% Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! M& ^: D8 S" i$ V0 J" o
5 m/ Y. c) f1 X- m
* b+ e/ {4 y* t# _6 @2 g, |
end
2 \, I) A+ L/ I- B6 }9 |" J# M8 R) `0 N: x6 h  C
to update-credibility-ijl - A+ ~# y8 g1 i  o4 L$ h% x2 G! K
  p; v# J3 i# ?: z" t4 T, _" `/ q$ q! 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。+ k( w8 X( d! i4 c. D! @# }) Y% J0 k0 q
let l 07 P4 s9 N/ b  A; ~! @0 {7 q
while[ l < people ]- r# v' S4 e, a3 v
;;
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  s& ~" c! [" o
[
6 o0 m4 P- K: Z7 ^3 i6 Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)' I' D. J4 Z4 r# y$ a
if (trade-record-one-j-l-len > 3)
6 m; d* i3 V+ Z" _1 W9 V[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- c* ]* m! J3 J- s4 ]  l- r: b
let i 3
3 \" P" B  @/ J# ~( a8 Blet sum-time 0: J) A9 \$ x. K1 c( e1 e
while[i < trade-record-one-len]
3 f" v# b' k! O2 d! |[9 C/ d/ Y1 y3 v- B" \! ^7 `- |9 u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# O: p0 O1 d) J! q/ d  v$ Iset i
$ ^( A3 M1 I8 U! l/ W( i + 1)
* Y& y/ J  v5 i: R
]
' y/ u; U3 o: r: L1 nlet credibility-i-j-l 0" @5 i# P, \$ b8 r7 `) ]1 z
;;i
评价(jjl的评价)$ M, G4 d: y! \' d5 @' s# S# z
let j 3& O1 T9 |, M, H  Z9 [. J5 x
let k 46 ]. o* s( X) ~% g
while[j < trade-record-one-len]
" z( H7 V" A1 u- x& K" j1 Z& R[
- a2 g) W, g2 d4 g% D# `( ~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' w4 N  P* i3 y9 w
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)0 w, F* x! R& ?8 t- A7 y
set j
& o, m; q$ W5 u( j + 1)

# ^( |9 L# z  T" v# {$ K]# q" U+ T2 s  b7 ^
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 ))
" Z- X. b1 d" }$ v% C1 ~
  c0 w2 \! ]3 p# W3 i+ R
$ |/ Y# R1 j) _4 m  w1 Z3 x. Q& \: Y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ }' A2 }/ U- D9 z) q;;
及时更新il的评价质量的评价; T6 u5 U# f3 J- W4 x8 Z+ C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* \2 W8 [) i6 E0 c, h& T% P# u5 Uset l (l + 1), E8 V" x. w- Y/ @( A: d9 n. G
]
) t/ U7 U5 p6 B# n: v) wend
) H3 u% x  s3 `, E3 B2 H5 }
9 [  W6 P0 C& s" @) ato update-credibility-list
" d& `  @6 c6 r5 J7 V+ Olet i 0
, R- C% O1 u: j  [) B$ }while[i < people]6 K4 U( A& }2 x0 D* ^2 u
[
, ~" h4 P$ v7 i# ilet j 0
2 Q$ s; `" O+ O& |: r; \9 J+ rlet note 0* z/ b) {; C9 s; Q
let k 02 r: X4 k2 p6 {, }' v
;;
计作出过评价的邻居节点的数目
) r0 ]0 B6 c- F5 o( ^while[j < people]
: l' m' ]- o' D+ K3 q! c% V$ ^( i[
& Q$ S% m) \7 qif (item j( [credibility] of turtle (i + 1)) != -1)" P3 M5 V' B1 W; v& _* t8 V
;;
判断是否给本turtle的评价质量做出过评价的节点+ t/ p, V, e( x$ u" A
[set note (note + item j ([credibility]of turtle (i + 1)))* I: |$ x6 m5 e2 j
;;*(exp (-(people - 2)))/(people - 2))]

$ B' f+ M7 m" v- d, Kset k (k + 1)1 b0 d+ t* k+ \. F7 n8 j
]
, g* R" `2 T* x) R5 Kset j (j + 1)8 I+ ]3 }  _: r. S! l. m5 r
]
( M5 {2 @( D# A7 @: Pset note (note *(exp (- (1 / k)))/ k)7 N7 J3 Y9 L. V8 H( B
set credibility-list (replace-item i credibility-list note)7 |1 a; `; O( v6 V. f" l
set i (i + 1)' J" C9 w; D1 f3 i6 B' b- ?
]; E" C( O; _, t$ u4 A5 s, a# e
end# H4 H- u) y% Z& K9 G
9 h0 `$ a) s( E" w: B8 k3 S
to update-global-reputation-list3 g. d8 N2 v, N
let j 0
+ j  M# B  o8 b0 G; u1 k% ewhile[j < people]& W1 z: r; G+ Z% I" w! o7 B
[
3 O9 b" M/ W# l( D3 @4 |) Flet new 0% q# f) C" m/ o8 }! y5 W" ^, K
;;
暂存新的一个全局声誉
  z: Z2 x9 i5 ]: s" Z: k, tlet i 0
+ l0 q4 r* _' `, R: ]let sum-money 0
0 Y1 z" T! }2 slet credibility-money 0
* I& f0 L  b; I2 nwhile [i < people]
0 V& \! K9 Y4 p+ L0 {' R[
, A# s! l9 o% Z5 Eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: A: V( r" q& _* K4 Fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: c5 l5 J: T; l6 B5 @4 N4 i$ yset i (i + 1)
' {* ]- c, h5 L+ |! f]
$ ?7 o" ?/ g* {% Mlet k 0
+ }# Y3 r9 l8 V! Alet new1 0
4 F1 m0 m+ X" W! u! B" Pwhile [k < people]
0 C4 p5 V. a; ?4 T9 w[* _, e; }+ U  L6 r6 [
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): |9 k% `  {3 ^) h( O6 b( ?5 Z
set k (k + 1)
& I  T* N  x8 S) r" z]
6 W5 e" Q  h3 k& g+ V& }0 R5 R4 [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. N  M) O: R% z7 H: ^+ ]set global-reputation-list (replace-item j global-reputation-list new)
' l9 O- f( a  C: _; M( U6 Tset j (j + 1)
1 g/ b$ z9 h# v5 @$ g]$ J; d/ a1 g" R3 F) `
end  ~- O5 M, [9 }/ H
: w& N& I, L; o' ?) g
( v# c, O2 M4 T7 T

6 L5 r$ _- K: h% b7 W1 z0 ?to get-color
( ~  x7 {/ ?1 R1 V4 q& \% E: y9 r3 W# z* S$ r6 g- p7 l
set color blue

3 ^% E6 k% U' s) d' l! uend: T/ C' O) l( W8 S
8 @3 A* _4 M# ]/ F! G, x
to poll-class8 g& J. k5 Y+ o' o9 G3 m
end) G* Q; Q: I7 O$ t# [% \

5 ~; e2 D- Y" `) A( Sto setup-plot1. w0 R; l' u) u$ u- ]

8 e  I; Z: e3 W7 eset-current-plot "Trends-of-Local-reputation"
  J0 J  m6 o/ k2 h/ j$ B0 T% j
' Y" F( Q/ m7 }
set-plot-x-range 0 xmax

" |; A% y/ H* x+ C* ?+ {5 |/ b9 @4 l
set-plot-y-range 0.0 ymax

  t1 v& l) I( Y# V7 b8 d2 H  pend0 B* Y% P$ D* u

5 \9 ?- _- ]; n9 w- qto setup-plot2
) m3 ?( ]( f8 ~4 j. s; w
! ~' ?7 @5 s- ~# l" e' w9 yset-current-plot "Trends-of-global-reputation"
  J" U9 t! u# a

4 l1 K$ T7 x; e  yset-plot-x-range 0 xmax

' Y8 f: V* e; _2 U9 H
) j$ [1 b* b% [. w% P! _set-plot-y-range 0.0 ymax

! }5 Q" A9 I' f% S% zend7 E" ?; I3 O4 J, }  B" z3 k' v

5 Q& z+ @9 M8 Bto setup-plot3
4 G* C4 q  y$ p8 @4 w7 Z8 p; t" i- \4 D5 s- X  H' A
set-current-plot "Trends-of-credibility"
7 H5 d- h6 C. {, K3 J+ P
( b) V4 u! O. B9 R, @4 q! W$ p
set-plot-x-range 0 xmax
; r7 s- W8 q: {8 K* a

! ~5 f. U+ K/ d  J7 i  Oset-plot-y-range 0.0 ymax
5 p9 c/ t$ @" h- x: y6 W
end
+ W& i- t' G! w, C, q- Q8 I4 F- [9 |* y! L9 _7 u9 [" k. D) w& Q2 i
to do-plots) x+ |- ^  f3 c
set-current-plot "Trends-of-Local-reputation"
& j0 {& A4 p+ ^6 sset-current-plot-pen "Honest service"
7 G* c4 @. f" Y6 J& V$ |9 _end  T0 g2 ^9 f% l) K6 e' d5 i* `9 L
* \/ U- r: h+ A' O2 R4 z; t
[ 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.- [& K' F" E6 s  t& |: X* q
3 K$ d4 {. t& A6 H
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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