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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:
1 Y& P2 t9 Z# j3 f, o' U2 g  Wto do-business
6 ~7 w1 Q3 |) F  V) ~& K: H rt random 360  ]3 Y0 _8 ^6 l+ i
fd 1
. J& W9 \6 I: S: l8 n4 T ifelse(other turtles-here != nobody)[0 O# B2 H/ F6 {% a4 R( x
   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.
% h* h- u; }# |6 ~$ y: a. V   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( ^/ l2 D/ K+ P$ U( y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) x8 i) m% v4 [- e   set [trade-record-one-len] of self length [trade-record-one] of self
6 V+ z' O5 {  P; F   set trade-record-current( list (timer) (random money-upper-limit))
, K0 f+ x* t1 q# b: v% r( o  u' m! l  o  U
问题的提示如下:% V) d. b% W3 l: @
: L% O! x  P6 f  |/ q
error while turtle 50 running OF in procedure DO-BUSINESS. o; D1 Y) `; O4 F
  called by procedure GO
* J! d. j2 E2 n, x" q/ e/ ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.
& v  r$ t9 @: R+ ]/ O1 B* D3 `
(halted running of go)
1 Y0 R! U- |9 C, n, v
: d1 ^# Q8 u  @8 D- J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~~" r$ f7 D; A3 V# K9 ?
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
; o; q# J( }# J& o2 q1 T( p& _globals[
& ]/ [. N* g# z; rxmax. i7 s' v$ A% O
ymax
- P& v2 m% z2 ^) ~- J- D: V( nglobal-reputation-list3 {# N( g7 a8 n  p* _
; d3 k# b5 m6 v' J
;;
每一个turtle的全局声誉都存在此LIST' U' M/ w' s) T. W, _
credibility-list0 S% ?$ [; t( ^
;;
每一个turtle的评价可信度
; L3 b* C$ U' r2 j8 G) i5 H. Ohonest-service
. Z% ?) y) G1 T6 R( q; uunhonest-service$ a# i7 n& o) V3 l* x
oscillation
, [; q1 i+ w! z, qrand-dynamic' t3 y' m8 e0 r; J0 t. K
]2 K" n2 G0 s% D' T% u# T  ]
/ N0 R- g- x2 \% a& a# j
turtles-own[6 Z2 r( C5 z. u- O0 {+ O% A9 H
trade-record-all+ L  _6 z4 \) Z2 z/ |$ ?$ j
;;a list of lists,
trade-record-one组成
4 D3 i- l  H9 x  O8 \$ k% htrade-record-one  @) N6 W" S: o$ A5 b
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 k) V& |- |1 C2 D5 `* F

: {* `) `: q& v6 u& r4 A+ g;;[
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]]8 }- C) [9 b% X1 r2 H5 H1 K; n7 W" n, _
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]
! T5 g8 L% j9 x/ x, Q2 Jcredibility-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# j# ^. W# c: _' m
neighbor-total# i" ^# t! ^2 n( Q
;;
记录该turtle的邻居节点的数目5 t6 i  V9 u: n
trade-time2 ~/ `/ O- g) V( o  o4 y' H& R( X
;;
当前发生交易的turtle的交易时间& o" Z. P: I( m% j  M+ X
appraise-give4 e& h4 \4 E5 k9 M* Y2 q
;;
当前发生交易时给出的评价9 K$ f; e8 A1 ^2 V+ Z; K6 G, v
appraise-receive
, l- r9 c7 l; X/ m$ s;;
当前发生交易时收到的评价
4 q% r4 y+ X( a1 u* m5 H: E7 r! Nappraise-time
- i& h( d3 K7 O) g$ j;;
当前发生交易时的评价时间
( Z; j/ Q/ [4 Mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- o4 l( t2 D3 v# P/ ~2 Ltrade-times-total
$ w# c% S, j* i# ~;;
与当前turtle的交易总次数
: u4 s+ E( d' ^; g* G( V( \0 s: F! rtrade-money-total
+ k$ A6 P% X& t; D! _;;
与当前turtle的交易总金额
9 e4 E5 Q+ X& tlocal-reputation
2 V( p+ R* n% m% wglobal-reputation4 f- Y9 S: z5 m0 A) P0 k
credibility
  c! m5 k7 ]& c" Q0 k; f;;
评价可信度,每次交易后都需要更新
2 i$ F. L% M) N/ E$ Y+ ^# fcredibility-all
( [- c+ R4 Q  r;;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
7 ~  z4 A! l6 _, U6 I4 f
/ F6 e/ ^9 J6 Z/ `' B* R# Y;;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: T& m( \# w: h! y4 P1 N8 W
credibility-one8 e' l7 D7 Q% U- ~) y
;;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people0 Z6 \! g9 b2 `1 H5 P0 |; e, ?1 `
global-proportion3 p$ j  Z" p, D' J3 F' R- Q
customer
5 p8 ], ~- `; I2 g* `  Z# v9 B- h  ?customer-no4 A1 W. Q7 a" v+ }5 r0 \
trust-ok/ Q' j' I9 w- J% i& J/ Y8 C" z0 M
trade-record-one-len;;trade-record-one的长度
& h5 y. j  ^7 X- i; q]5 V$ N1 S9 m# r- A

& W/ j8 x2 p5 R" Z. Y/ B1 `;;setup procedure& X# M6 U* P* T& u, @# T( O  \

( B1 W, ~5 ]7 M* qto setup
+ p4 e9 @% Z) R5 s  t9 k9 a
& q! J, N1 u1 xca

/ Q- i$ U5 I0 |6 m. J5 _9 U/ L6 e; C5 {! [: c. g+ b
initialize-settings

. }6 W9 N' g( v2 `' P4 x' v+ K6 l4 m8 T0 E/ E+ `& n8 k8 P
crt people [setup-turtles]

. X% q) u& j& m3 s( R9 |& z! u3 h& Z
reset-timer

, S3 R. j- y5 @- k% O
! ^! \3 y6 J+ T! opoll-class

; R7 ~% V' S, O8 h4 P9 g) A$ z3 H1 O/ w
setup-plots
3 f' g. p, C, G( m. \- l

) [$ I$ U9 m3 ?do-plots
: x! E3 O7 b5 z. |5 B% ^" s+ ]
end
9 M3 P# l, g& G
7 h$ `% I# s. |  I# R6 Q: Oto initialize-settings
# g' H" m3 c/ t0 e
- W2 n, W6 z6 h7 q* U6 `( qset global-reputation-list []

+ T: a8 C5 U" d/ S" K( Q. c1 h9 D. q, f3 x2 L# ~3 P% K" [
set credibility-list n-values people [0.5]
( z2 k& \0 h: S8 Q$ A

. f$ \- _( K( p* M& `. |) n/ Qset honest-service 0

# J3 c- W/ w7 T* S6 X2 H: m* W1 h4 @* X6 u
set unhonest-service 0
/ D9 }9 [- C" V! n% O' D

# }' M0 Q- r6 bset oscillation 0
7 V" A0 N. X0 p9 k! X. k
. ~# N" q" E$ G6 F
set rand-dynamic 0
8 F# ^' d, s% l# a
end
) J4 t! B" a% b- \
7 m6 r( C/ L* c$ O: ato setup-turtles
. V3 `0 @) b" U# ^. G9 ^$ sset shape "person"
( k$ g# Q( X6 s, _$ S  o, E& zsetxy random-xcor random-ycor0 A2 y) }: x% R9 N: u
set trade-record-one []
# N* e# f# ?- ]- q( N' f
. K+ ]5 s5 d& b1 ^( X
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 R+ z6 w3 W5 u; z+ a* @2 }
; G; A5 |3 x0 q. D. J" b
set trade-record-current []
" u* M+ S7 m! ]set credibility-receive []. G0 A7 u- R2 @/ S. i
set local-reputation 0.5: H$ n; P3 C, n9 t9 Y" y
set neighbor-total 0
7 _, k( v) }% j3 Y1 O* nset trade-times-total 0
5 m9 @" D. {- J' C" n5 G6 X0 `set trade-money-total 0% E& ?: N- Q4 o# n, d4 _
set customer nobody
& [( K1 u- J0 P6 }- rset credibility-all n-values people [creat-credibility]8 z! e6 E1 c' y( [* w
set credibility n-values people [-1]( E- j" e8 m3 \) ]# s6 O0 O* i
get-color' N$ I: c  P3 y9 j6 R

# y; a, k3 r+ D% A/ i$ q7 c: Hend  k8 K% v- w9 l! g4 J, w3 G  M
, L! D: b8 d$ Z1 O3 l$ Y2 s3 x3 b$ n
to-report creat-credibility
* `4 n8 D" Q. w" h: ^report n-values people [0.5]
! b4 y0 g/ ?5 ^1 t! n8 n5 |, G0 Qend
/ g5 N& O- \. ?: H% e- a8 T2 f5 q) u: C! U$ C1 Q, [+ y
to setup-plots( C2 k3 L7 V! q% z- E# \$ U6 f
' \! G- f; s, T) V* l- t, y$ j, Z5 p
set xmax 30

0 t/ t- r; |* {( ^- h9 i6 U7 ?: M7 d5 W8 Z, {/ J6 }) W, S
set ymax 1.0
( A* f& e# Z* U; N. k6 L# ^
; L+ e: c* J1 j3 Y
clear-all-plots
) ]! {$ M' Y6 i2 e' e9 w

5 `. }2 c3 p! Z9 w: qsetup-plot1

! D8 Y% g" j  A. P1 P6 u' R5 a# g' U% k7 L, S
setup-plot2
2 v* d1 \, e5 q0 B  b

( I! \8 M8 Z1 [* J4 X  S4 K+ G! Ksetup-plot3
, v) a2 j8 @( V9 X1 q  U6 F
end. p4 j* [: |! C2 l  W
/ j. V1 S/ L" _+ ^1 O& r
;;run time procedures
) F# [7 O5 E+ A; d8 E4 s: M* {; D: x( ^2 M1 z* r& k/ M
to go% a! w# B/ G9 S2 \. j3 m0 K5 w

. \- M4 G; Z; X7 h0 }6 X% hask turtles [do-business]

( X5 ^0 D* I) p% S! }* cend
" D9 i) v  ?6 F0 T; Q$ D
* T2 c# X2 u& E7 I6 h; cto do-business
1 p0 a7 o# \4 z
" M4 T# C: A% P$ @# K& [
5 e( g+ Y4 U1 _' p0 G& d
rt random 360

( H; W. n  w- |6 G0 ]
" f- t$ t; e  S5 Xfd 1
3 j1 \& U. U9 V# V4 A

& n+ u' C' f$ Iifelse(other turtles-here != nobody)[
) z2 c3 L3 A+ X6 c6 v4 H7 [& Z
4 q+ A* o" \; D5 {) x
set customer one-of other turtles-here
+ @6 d# c" D6 ~, h' d

: O9 O% e" e3 R" P* ~+ r" L;; set [customer] of customer myself

* f& I8 s! F$ \( _
% u/ p% l+ W; Y' M4 s* vset [trade-record-one] of self item (([who] of customer) - 1)9 E8 g- \% ?7 @$ N9 Z, u; M
[trade-record-all]of self; M2 S# ~) `+ E2 Y* v! Z. W0 [4 S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ t- r  |$ i3 ?. z& I7 H0 F/ U  U4 W/ |! Y
set [trade-record-one] of customer item (([who] of self) - 1)
0 j& |& }( _5 Z# g[trade-record-all]of customer

) v7 \7 M+ y( S6 n7 `; M0 K# P; q8 c+ H) ^( I0 A" h
set [trade-record-one-len] of self length [trade-record-one] of self

- |, M& k! U3 O( U7 c0 A! `  H8 Z% m9 G) e0 s. G$ W; L; C
set trade-record-current( list (timer) (random money-upper-limit))

' J: I+ S8 k/ L3 w( p# m4 ~" R: x1 J4 |, E! N/ t7 q( u6 g
ask self [do-trust]
8 y3 F8 ~$ ^/ w;;
先求ij的信任度
& g- \* z0 X3 @& ?, {
8 [) D% b3 @9 X. F; h* Yif ([trust-ok] of self)! P3 r5 h3 }% ^1 Z7 W# o
;;
根据ij的信任度来决定是否与j进行交易[
& m( A' P4 |, x# Kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# i1 g9 j/ g2 Q0 Z. H# `1 ^: U
* E( \% ?$ b& u/ X2 P1 {[
# E& m8 c: K  D& \$ ]0 c2 @

, ~2 e' _/ k- w' t# m8 S  z; D! Pdo-trade
! f6 Q- S! d8 f

# |; d( A8 P0 {update-credibility-ijl

* c+ N  Y1 P  i0 m5 [1 J3 p1 W, c: N3 a9 B- ]
update-credibility-list/ h9 y) j8 K, I- W+ ]. v

8 Q9 q: m( K, [' y& s
( U6 a; s) {$ P; `0 Q1 Supdate-global-reputation-list

! y3 R3 p7 U. D( P4 D* V8 b' X' J2 z# Q) T# p7 K" l
poll-class
  I% R: K! s5 K+ R) S' a

5 h4 ?% Z& n: wget-color

/ e4 ]( d- D6 @7 M1 ]
. y* a! k2 m% Y/ L$ G]]
% S( e* ?; z0 a% ]
- e3 ^6 f6 f1 p6 W7 T;;
如果所得的信任度满足条件,则进行交易* ~7 b# t2 H: Y) ^4 ^

' R: y6 T; Y; i7 k[
+ n1 j. f. g" }  |
  ]! h# q4 ~# n. r# C9 \
rt random 360

, ^' T" q( s4 F
+ g5 p; g5 O# W4 O) Ofd 1
8 u9 l2 _! k% O5 j' y4 P$ B
% p* j" A1 k5 P3 K7 _( O' \
]

; P2 ^# o9 ~8 i. B7 R8 g! P& m6 C8 ~$ A& r3 B- G/ {9 ]
end

0 x% |5 f5 o" x  i  j& q, r) `2 L3 k3 k& A( i6 Q; f6 ?
to do-trust
1 X% ]4 c  f) ]9 B8 p$ {% iset trust-ok False
9 j: e1 X5 o. o; w+ t, ^
9 @% Q/ Q3 E) n. G3 @

1 J. M) a% ^! s& x! @let max-trade-times 0; E9 ?1 Z+ k+ T7 q; m. {) v+ ~" M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 ^+ ~% K. [7 v! p( Y# y3 ^" _$ M
let max-trade-money 0. C! i; e) G2 E
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% a6 H0 C9 I: o" B0 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+ G- u- N3 D4 {  _# W
8 t& n( Y' _& Y( Z/ t% W

) h6 b0 w. R' q2 v( t! ?get-global-proportion
; e' Q0 O" B$ O  `2 T- X8 k4 Olet trust-value. [- l4 E1 E0 V0 z8 r, |) C6 X0 A
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)

7 c6 \  O3 j& n% Gif(trust-value > trade-trust-value)5 Q2 n/ |' {: y8 K9 w, t! s5 P& w
[set trust-ok true]# e7 C/ r2 H7 B/ }
end
) I+ ^$ b$ _; }) D) s, E) H
2 K9 ~7 K6 W: Y1 s5 x5 {to get-global-proportion# B1 B8 K$ M% Q$ U! m5 a
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ {% @9 M" I( H% A: U/ z/ m0 f# q4 @
[set global-proportion 0]6 q' G# d/ }! U
[let i 0
# A, F3 I) ~  \2 x6 G- llet sum-money 0: t5 U/ P+ a) ?4 d
while[ i < people]
9 m5 U, b; ^# K% N- n# ][1 c( Q0 _$ E8 _% Q0 _& B6 I
if( length (item i
2 n: ]- y! e8 b7 I- F$ f/ Y% [[trade-record-all] of customer) > 3 )

6 ~- {+ P; J8 t0 J: M[- G5 R: N% D) b  G8 L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 s9 r+ E) S0 x]
& a# x, T$ e7 I% K0 A( u7 X& b]& x. ~! l1 t5 X# P: J8 O7 ?
let j 0
& M5 X  t0 z3 _4 p0 [. Ulet note 0% j; Q) \* |& X; W+ c, L
while[ j < people]5 `6 {: U! c0 E7 X
[, _) k! k1 z2 W
if( length (item i' M6 h5 s7 S. E6 v$ d( n& R. G$ C
[trade-record-all] of customer) > 3 )
4 g' ~+ c" U0 J0 z) d
[! ?8 K2 q  f8 X2 ?1 I: z  b; E( m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  x3 y& a  P8 M9 s2 g! H2 Z2 }" [; A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' C3 [; n9 U" b6 f( k2 D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 B9 K9 r) U  ~  m: Y
]
- m6 O  l7 g* w3 w0 k! j8 []1 `: C7 h1 [( s0 I5 F
set global-proportion note4 o5 I9 W  t& Z1 z& x' D
]
" s( j; a  G, {: f$ F8 bend
4 |" }, J- c) S/ E3 B4 k" C9 w4 x( W$ Y/ T! S/ O; i0 z% \  N) E
to do-trade
" l# ~( J3 n1 F8 k3 B" ?7 F. L;;
这个过程实际上是给双方作出评价的过程7 i+ E+ }9 E$ l5 w" X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 j# H5 M  u! o+ f0 N- y: H9 g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 _5 w, K: H) r% ]+ f/ l% g5 }set trade-record-current lput(timer) trade-record-current
9 w9 q& D, [8 ^, S;;
评价时间
# M/ n( {: I- V3 Q# u4 m( Rask myself [- t# L* B0 [+ }+ b3 _
update-local-reputation
: X* F7 C+ K: Yset trade-record-current lput([local-reputation] of myself) trade-record-current% N& ?5 L% u1 G9 l* g' t( n$ P+ ]
]: r, Q$ A6 l5 E. N$ x* a8 O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 P8 H+ X6 V( ^+ H% X2 p;;
将此次交易的记录加入到trade-record-one& H3 |4 t7 S$ p0 G0 x0 O2 m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' g, C- }: _" @! r! X
let note (item 2 trade-record-current )! e$ ]/ p2 J$ V, s' R
set trade-record-current  P% t9 k. @: ?+ t
(replace-item 2 trade-record-current (item 3 trade-record-current))

# l- N: s  \2 V. \+ Yset trade-record-current
8 k0 }1 h/ \, O  \$ N9 S% o(replace-item 3 trade-record-current note)" c4 V7 k% I6 [  q( k8 T+ P: y, E

5 Z+ E! h: g& A6 s; r: X
& _$ N0 \4 R6 o( h& C, ]
ask customer [+ e% F+ Z( N- \7 \
update-local-reputation
  i/ {$ ?' F- u: Dset trade-record-current
9 ?7 A% F. v! D! n4 G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 ]; m% y" v1 `4 n; D2 f3 G' y0 }! [
]: s$ g: p# ?" f) s2 Y
' @2 Y. h) R" Z( @0 N! J# a

- e& T; [8 m5 s; x7 h7 D4 Dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) v" r% b# e0 }3 v

; e! {( Z" a4 G: s+ H3 [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 v+ H# d% Z% t3 C! P6 d
;;
将此次交易的记录加入到customertrade-record-all
, b- J1 Q* E" m* g; N% `9 g! s$ W$ \end  Z9 R/ P* W6 O3 }

: [) w* n  R; `6 n) f3 V+ S% B' mto update-local-reputation+ G& G) `: m, ]3 g
set [trade-record-one-len] of myself length [trade-record-one] of myself
7 e( x% W1 y9 P2 e. E4 [9 ]
, R# @. Y9 S& h  \' r* ^) Z% ~9 D1 \) g# }5 Q
;;if [trade-record-one-len] of myself > 3

6 y+ Q4 q' n9 f4 e& A; Zupdate-neighbor-total% b5 f7 n! {; [7 p8 W+ H9 x7 P+ ~
;;
更新邻居节点的数目,在此进行( m7 k+ {& n1 q% h" F* ^
let i 39 I& J8 w5 a, E' P) r
let sum-time 0
" g0 A1 r0 o5 d3 z- G' a$ _while[i < [trade-record-one-len] of myself]; _! ]/ f+ m( Y/ \* q
[
6 W0 S. @* t& }1 A! f: U4 w/ gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 @2 u) C& I9 k3 |
set i
6 y6 B1 v1 n5 a+ h8 _# b) P/ `( i + 1)
1 o3 g/ a2 C! I: ?; f# ?
]
& u3 P. G6 _- s; _! B# e+ xlet j 3
' H; _& E- o& _0 {; }) D6 Flet sum-money 0
2 \; d! N5 a0 B$ {+ F& m3 A4 U% mwhile[j < [trade-record-one-len] of myself]! n0 E, z- V9 M8 r
[! _9 t; g3 u+ M5 ~7 f& k
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)+ Z2 N2 V$ B  Z9 x3 b
set j
, h7 [; z0 [; i& T- D( j + 1)
1 o3 X( h4 ]. v5 J; |  `
]& P2 H/ ]/ z& k- ?2 }# n
let k 3
6 Y* J& W' ?- d9 N" _9 [, Llet power 0
' }' S5 u$ ]+ K: j' D0 u" Nlet local 07 j' b) s: K1 y1 H+ i
while [k <[trade-record-one-len] of myself]
- W; i7 J2 ?" k$ ^* s9 j3 Z! H[- P3 w3 H8 @' i" V
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) 6 h$ y3 d' ~' O- ~, b
set k (k + 1)) X/ B- v  y( u+ e3 J- W$ Y
]
5 l  d" Q- ?' Z5 c- \0 Z: eset [local-reputation] of myself (local)4 [* T3 ^/ O' g8 g% [
end* E7 ]- G) a. h: L$ H

( s! U) U8 z* [" Fto update-neighbor-total
; q6 m- T0 W& l2 V* f6 [. h$ K% s8 d( ^
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 N/ N* O  j. l7 l  h
" @( i2 A6 b! \! s

! `/ m( R6 T- D) Z2 [end- K4 F7 U. k( C/ U8 ^

; y4 ~, z( i5 Zto update-credibility-ijl ( n2 k9 O/ x: C# D
; K& k3 C% G: Z+ q% e+ V; L1 G! o. H
;;
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。
  W$ i) l# ]! B' M/ }0 G3 Dlet l 0
5 F5 @* l3 k2 G" }, ~while[ l < people ]/ x9 R: c  I% `# X/ _" s' k
;;
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
; G, q" u) E; F% Y- d[
, V! m: m; q, Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ _. \8 P7 t1 a$ J
if (trade-record-one-j-l-len > 3)
# u/ W2 K# \2 C; e6 n' y[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-one0 K) {# \. E6 Y+ H
let i 3
8 o1 L& u. C3 I0 `5 w* Blet sum-time 0
' k- R9 O! W9 `8 awhile[i < trade-record-one-len]
7 r' p8 d2 s  ?, Z[
# E) _2 }1 L9 p2 {6 s4 lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' a+ ~) v& ?" K! D
set i
7 p7 c- h8 b9 y! X( i + 1)

! ~+ i) @3 Y5 o; Y]( @! @, |% P. S  X  Q& O
let credibility-i-j-l 0
  E* C* {$ K3 E9 p7 J; U;;i
评价(jjl的评价)4 b6 C5 U, x, _; u  N$ K+ \% t
let j 3' b$ k( K# K0 [7 O! c
let k 4
  H! |6 O) l, C% K' zwhile[j < trade-record-one-len]/ O5 `# }/ v  o, X
[8 h; k1 M/ V( R* t1 r4 d, R1 w7 F
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
; p& x0 q) h, S' qset 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)
! I9 S: g, F  m! ^* K% V$ {set j
/ R$ U2 s2 l. k5 I4 G0 ~+ d( j + 1)
6 I$ T& z0 H& y- S. o
]) i3 P$ d& X; D" b4 {' n" A
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 ))
& m+ T+ ]4 D0 l& D. u3 X( I- f1 `9 n8 e0 F

' q5 r$ f0 Q1 E6 m" W) ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 b0 K- R3 c  ~1 S0 z, b; D
;;
及时更新il的评价质量的评价
" [& y3 |% [% f2 F& ~6 C, Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' U: e% |& x2 e1 X* e& G
set l (l + 1)
8 O# T  b$ a. E" B! v2 c8 v]
+ X" X/ y& P6 ?3 M0 ]" ?" Mend- K; R' A* d/ E9 x( F) q
0 L# u! M4 `5 N, O0 N; d" }5 Y
to update-credibility-list" M6 H+ o9 y. |# \
let i 03 \  H$ b% \/ X5 Y" _* t
while[i < people]& E7 y% J9 |9 C, K# c- L& F
[
7 q! }8 B5 k$ K3 P" {" O3 Ilet j 0
/ V/ a6 \6 s) j3 b$ t  `) nlet note 0
  l; `3 N3 z; L3 V8 jlet k 0. C6 L6 E; l. d: A
;;
计作出过评价的邻居节点的数目- R( R; C, ^/ M2 b7 ]0 I  v
while[j < people]6 Q9 ?0 u* [2 l* y1 r/ U+ b! I5 l  r
[/ a: w( c3 Q  D6 Y
if (item j( [credibility] of turtle (i + 1)) != -1)
8 V7 {' X- s7 h( e0 P;;
判断是否给本turtle的评价质量做出过评价的节点  D* K, b) V6 i
[set note (note + item j ([credibility]of turtle (i + 1)))
6 e0 C# q* ^# i; T;;*(exp (-(people - 2)))/(people - 2))]
# ~% }; B) z9 p$ g
set k (k + 1)
; S/ N# R3 Y- ?2 Q- W]
3 h& x. }1 t, U4 tset j (j + 1)$ H8 N, C$ {3 C* v
]$ [9 @6 |% S# H, t" o, I7 \
set note (note *(exp (- (1 / k)))/ k)
% v' O" O$ \( i+ I' S3 E' q! Oset credibility-list (replace-item i credibility-list note)) y: P2 C/ ?' v$ [9 l1 X! \* l+ E
set i (i + 1)4 F3 r. T0 I7 i/ ~/ v
]$ z) y+ @  |9 x7 a5 }: M9 E8 S
end
/ N" e" J) E' f8 Q6 g
1 n% b: w* b; Yto update-global-reputation-list$ F+ v6 |( s2 i, c
let j 0
; }2 F4 z6 N2 Y  }while[j < people]
, c9 `4 |' ^: Z/ p6 @: D4 y[; B; B  y/ U  X9 u: i1 D: s/ Z" K
let new 0
, q2 z" p# F6 g3 g6 x' u1 I  @7 `8 r;;
暂存新的一个全局声誉
* l2 E+ f0 M7 tlet i 0
8 G* z5 Z9 P4 _) R" |# ~let sum-money 0
# E0 e3 S( a; w' o$ ?: e/ e) Klet credibility-money 0* r; I- v$ o$ d
while [i < people]" ^9 C( P2 f5 v' |. \7 a
[7 l1 w$ s1 W& _3 Y8 h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 F8 C) u+ I8 S% y$ I; Tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 p* q, _; Q* i1 g7 k+ Sset i (i + 1)
3 E( J' }4 H) y' @]: |: `: `$ r- C  g4 h( @4 Y- b5 D
let k 01 P- }. l* F. D3 ~
let new1 0
# F; t9 T; V& b4 Uwhile [k < people]9 K" J  k! d: b+ r# ^
[* q1 p/ I2 y& D* M' B3 U
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)
" s7 r2 i3 b/ ?. k! L1 c$ Qset k (k + 1)( o7 b) O- d* r9 z1 K1 I
]
: H& h4 h! M2 Y8 `# hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. E1 m) z: O% `1 N; P* }set global-reputation-list (replace-item j global-reputation-list new)
! y" Y  I3 g; ~, [7 D0 N8 U, dset j (j + 1)9 Y. V: Q- a4 F% R2 I
]3 N, ~1 F. g( y% u% K& I. P* d
end: ?; L0 Q, Z: `+ C0 Z  P4 o

; A! j0 Z  B& H6 w. f2 S  o! C9 K6 i2 n! r, o2 t3 r7 e2 T

( u  Y! H+ d. g  n( |; Z+ H' T7 o2 dto get-color9 Q) V2 z. M& c" F& e) K

0 P- k0 ~$ G$ v( B- H. u' nset color blue
: ?: V3 M: ~! o: t# _) ~6 P
end
* N' X5 d4 L* g$ X' ], t
4 `5 J% W5 o/ Z$ T6 U4 z! V' r' ito poll-class# x  Y) Z/ }8 Y* f
end
. F/ Y0 b( M' G- S4 q+ O$ V( g2 a2 G% \5 w0 U
to setup-plot1+ `8 r: o8 u, h* s4 ^! ?% y* z

% W% L" h; K+ W( ^7 Y7 Lset-current-plot "Trends-of-Local-reputation"
' h5 f; F% c3 L" M. t0 k4 `( \2 ]- Y
  u8 c  N* q; ?% g
set-plot-x-range 0 xmax

9 @# A" Y9 g5 W$ B& u% K, w# l" q9 c4 L: h2 H% I# e( S3 Z$ t! D
set-plot-y-range 0.0 ymax
3 \# L' @  T4 {* f
end
! a: z7 {; Q+ j! W8 Q" l2 i8 c" x) l1 `8 R
to setup-plot2
7 K' U2 Z! K' u6 ?0 y
2 k3 i+ f% W9 U6 v% vset-current-plot "Trends-of-global-reputation"

& n8 z  d. y9 b* K2 G9 Y" v3 u% p) U2 _( z+ J, p% N8 w5 e/ R9 L& y
set-plot-x-range 0 xmax

% u; U' [( ?, k0 T$ X& b; e
2 j5 B" x* X1 ^! `  Bset-plot-y-range 0.0 ymax

  }1 e0 u, C: C( M% @end
6 [8 T/ t4 F8 L7 U5 A" Y
' n0 R$ o7 o# `$ w3 {7 L6 Ito setup-plot3) P9 I% d  m* T! _7 f

* c* E8 B; d/ E; q: g. l% Tset-current-plot "Trends-of-credibility"
8 o6 B2 |) G% O0 g+ N6 [

) z0 P2 V" b$ X/ W: l8 Zset-plot-x-range 0 xmax

7 @+ r. r) P4 p8 b! e" I4 @8 \9 U) s0 j8 i
set-plot-y-range 0.0 ymax
6 e" f" h$ p. w8 V
end0 _% w' H/ @" d) `- Z4 T
6 A; p9 X8 b. d: q
to do-plots. Y  h5 Q6 q! S. k: L3 r
set-current-plot "Trends-of-Local-reputation": P# d1 r, j9 S; f  s5 i
set-current-plot-pen "Honest service". ^: I* n, b" f, A- `( l
end  M3 J( z+ ^$ \
8 T/ T  E$ Y/ B  O, N- g& l5 ]
[ 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.
, J0 g' X% T8 u% x2 r2 Y
. ^# O. K" R+ F7 z4 }9 a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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