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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:
- Q, y- T) z6 Q" e6 |: Mto do-business 9 S- c+ Y( r" T" I; h
rt random 3602 \0 ~1 d8 Z2 P: u. [
fd 1
+ f: W9 T9 p3 N+ o. T! y; r ifelse(other turtles-here != nobody)[
7 }1 r3 s2 T1 A0 ]; Y1 {1 {2 A   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.2 l- t( q% h6 X9 s8 e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ Z' _* k9 R* G- p' N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  B& D8 K  r) ~& x/ |  o6 R1 V+ Z' c& E
   set [trade-record-one-len] of self length [trade-record-one] of self, P6 p; `; Z+ k- x6 M0 e
   set trade-record-current( list (timer) (random money-upper-limit))% N5 j8 b1 u) v- T. H& t3 f/ U

% h; \3 `( \: g问题的提示如下:* L# ~/ }6 n: r! P0 C$ K

9 w5 F% A4 `$ P  @error while turtle 50 running OF in procedure DO-BUSINESS
& i  W( K5 C0 t( w- ~" W# K  called by procedure GO9 f$ Q6 m) @1 y6 a, |- Z$ U8 v! V0 g
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- I/ y2 V+ l# c1 T1 B3 B6 g3 g
(halted running of go)
6 R( T! C& ~# H* I4 p% Y# j& J& M1 N
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~~
0 e5 Y* w- d6 a$ h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
5 {5 K0 I. y4 C4 Z2 `- e2 I. ~globals[
( C1 b! R' {8 g- vxmax7 X+ o' k/ k2 k7 C5 ^
ymax
1 {- H. M$ B& q( oglobal-reputation-list3 k! ~+ Z% c; R( v8 C

  J3 k. i2 `$ P" u8 z;;
每一个turtle的全局声誉都存在此LIST+ b2 B0 z$ D0 e  M: D/ q% U
credibility-list1 @  @  a$ s) U
;;
每一个turtle的评价可信度. ?% i* O9 X" ], a8 j
honest-service; r" q$ I3 K# r3 N
unhonest-service3 S; x) v3 R/ _4 s0 Q/ f
oscillation
: p- [7 g6 x4 t0 ?2 D/ drand-dynamic  a+ [+ `1 x3 P* o
]- g& w' c' g$ N8 D6 z
) T5 @$ \' _2 W4 p
turtles-own[
/ D3 U1 a+ j0 L, J2 d! X1 ?( Qtrade-record-all% K- M' e" \  n/ C6 i
;;a list of lists,
trade-record-one组成7 N4 N4 Y9 t1 t, ]3 H0 X1 D
trade-record-one( k' C3 w% r  Z8 ~% r& J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- L) B! N. \6 u9 X1 d+ e% `
5 m+ Q1 Q2 S, l! K" Q  Q! I
;;[
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]]
, |$ l" a+ Y$ O  e; H4 Jtrade-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]# r# v! }' L. p$ ?9 u, R3 B
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+ w( F* r* T0 o$ ?$ O7 g3 V
neighbor-total+ i6 }1 n! s' c3 `0 R/ q  E
;;
记录该turtle的邻居节点的数目" l; F5 {* ^, M- ~
trade-time
4 d- l: T' m9 k; e/ ^0 P, ?1 M- K; N;;
当前发生交易的turtle的交易时间
7 J0 q! B) E8 o: I, xappraise-give
* ~- r5 C4 x" M2 b4 |, l;;
当前发生交易时给出的评价; r7 v9 M: G' w* J4 k9 _
appraise-receive# X. B% z* e0 m9 ?
;;
当前发生交易时收到的评价
" ?* M3 b5 k* y) Wappraise-time1 W  W* }- a9 g( F
;;
当前发生交易时的评价时间0 y5 e* ~8 w# e/ D% M9 S
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: L$ ?1 ?* g* r4 t. r6 d! S: _trade-times-total2 [( D1 t. Q+ u3 x7 y  e
;;
与当前turtle的交易总次数& W7 P# N0 z) H' t$ q  [
trade-money-total
( U2 a) \  P4 M6 v2 c- R6 ^0 l;;
与当前turtle的交易总金额3 V- ]- G. A: K* i* L  h
local-reputation
% k2 L2 O+ [- c) ]8 e! O% O3 Hglobal-reputation
6 r- _& I0 c9 u, l$ c$ w, ncredibility
" I' S% _7 m2 P2 };;
评价可信度,每次交易后都需要更新2 |" }+ R: S; \; S
credibility-all
0 N4 e* f0 l2 t& K! 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! c' Q- X2 K) a& Q1 k; m, A

2 n1 r( ]4 i: t1 [  B' \" U;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
$ g% O/ s, f  _1 ^4 Fcredibility-one
# b+ c' ~) a. c;;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; _; e" c7 X9 V( ^+ z8 gglobal-proportion
, P1 N2 `$ s, Ucustomer+ @! k0 R( V1 b4 V; U
customer-no; Q: H5 E5 T4 y) H/ L, {# R3 E
trust-ok
6 @6 G4 h( z7 v% L# |: m+ g% Ftrade-record-one-len;;trade-record-one的长度
' I# t# i" H* h0 s, I]
+ N5 W# @" |/ X3 ^2 k
: M1 a' C) X) b;;setup procedure
( Z# j; k2 y( W5 z; P) ?9 W0 l8 _4 K7 L/ M( h" D: u$ c! t! J
to setup
! I7 v9 N3 B& e# D$ |. f& M# P' ]; M" C' A* P7 G* W% N5 s$ }6 O4 }! P
ca

" d6 B0 M4 I/ H9 l- p% C1 ^! Q$ ^+ ]5 ^* L  P
initialize-settings

, N. v, U/ x3 q- H* I9 F- M9 B
8 s8 U# t) s7 C* T: W3 c0 \1 V$ Ycrt people [setup-turtles]
. @# X! e# r9 R$ N& |6 X( |+ g: U

  f; F. f0 k, o9 Rreset-timer

5 Q4 }0 X% g" \; t) ?9 \6 C, n$ }
' A0 f( [; z% U/ r. |* vpoll-class

# O1 T* I6 n  ]' @
$ p1 m. H3 z" w3 z- m1 a3 @setup-plots

. I3 O. _" A: H/ e& U6 K0 g9 _$ y0 ?! Z% l
do-plots
8 U8 _. E3 B# J# t7 u9 |
end) ]1 f7 A' y7 w2 `: h# o6 P
" `: F+ ^) U1 j" u7 |
to initialize-settings  W' E9 H* M9 j3 d( X9 e2 P

1 ^2 B  [0 x8 S6 Sset global-reputation-list []

4 k& d" u/ j/ U6 L, c% c- a; e5 O! c; i
set credibility-list n-values people [0.5]
" d, I6 }  c1 \7 ?. @9 o

# Y9 P3 x" u5 P( M7 Zset honest-service 0
4 ~6 d, j1 ?7 W$ }$ T
1 ^; g5 Z+ p3 a/ H% M- J1 P  w4 F
set unhonest-service 0
( k  V3 S: Z* `& p" \

- u$ ]  e2 k! ?1 r: b. r! t+ Nset oscillation 0

- }2 E. S4 h- u( ?/ y, `* }+ ?0 c1 ^1 @. J
set rand-dynamic 0

( J" y; s+ _% J- l' [: lend
5 z$ O; {1 y5 g( K5 K2 m4 A4 I$ H, q5 @
to setup-turtles 8 a. T: o* M4 g' I9 T( `( |: X0 I
set shape "person"/ W/ N- J0 V8 l
setxy random-xcor random-ycor
7 O% \4 |  d! D9 H6 n6 Xset trade-record-one []
# z: I, S  H# }" R+ p

/ }6 Y0 Y: `& i7 a& p1 q( {* \set trade-record-all n-values people [(list (? + 1) 0 0)]
: z. i5 U* h) S) j6 A
+ s* X0 S: L  D* Z
set trade-record-current []
$ i; k5 ?, A; H8 {set credibility-receive []5 Z) N/ `: p- {' b& d7 t. A0 n; d
set local-reputation 0.5
( i2 J* B$ b- s8 |set neighbor-total 0
+ O' |! J7 [( v9 n* x) U( vset trade-times-total 0( M! H1 w) O' v1 o( O
set trade-money-total 0- y( B! m3 _) b9 O8 e
set customer nobody
: P) L) A3 _% z3 k" o2 Lset credibility-all n-values people [creat-credibility]
0 g! e, a. y" I) W. S  `3 uset credibility n-values people [-1]8 e! _1 a  E0 a. s5 }$ W
get-color
5 u/ M- S, f! q( Y. A. S% U7 ^

7 Z2 y4 J( w% {% x1 m5 x, mend" k! h: \) M) B+ Y
( j2 y+ |+ @2 C, c/ L, I3 O1 h
to-report creat-credibility( l- O* [: ^% y
report n-values people [0.5]
6 \* T/ {$ W% \: K9 ]( x: F( {. uend2 \) n- ]4 Q0 B$ M# z3 e: n: ^
+ z4 e/ ?# b4 F3 P$ m
to setup-plots
" u! B# {3 ~% w) [0 p9 _) S( a& P+ f' Q$ t. [
set xmax 30

* B8 O- X- [6 Q' b. U1 [7 O0 O: U3 g3 B& J6 j7 ^; l6 @% b
set ymax 1.0
: F6 u, }* N% G" X$ w7 Y9 g" d9 k

8 t: q  S6 D% ~' U# Nclear-all-plots

, w% ]2 e3 z% n3 o+ N9 C
2 u* I" H2 \( T* x+ m) Isetup-plot1
; U  @" d% n" g3 ~

; }* \# g' g* ?setup-plot2

9 q/ J2 V( \0 U2 l6 ?# H, b& B
( R4 N' {, J$ A0 {8 S6 r. Nsetup-plot3
3 ]: B' R% s- `, j" b) w
end
5 N- y* g' r) M/ c$ L' {
$ T4 \' T: \9 z6 i; S% A6 G" |;;run time procedures: b  i3 D; s9 ~( ~" Y! r

$ M% O/ q7 i0 Z9 i; R8 @2 vto go( k" }; R, K4 t, B- v( J
3 Q1 G7 x6 j1 f# m
ask turtles [do-business]
& l" X: }/ Y# z4 B7 v
end
+ D& S' ^0 `! |+ z5 N' l4 j* Z, g  Q- F) r+ Q2 s; R8 }
to do-business & h, u7 ~, j) |+ |* E
1 f9 ]- j7 m2 g6 T

3 w5 `8 S8 V& ~/ `: n1 m; o+ f: S- frt random 360

+ {2 J+ s# [. _% n5 H1 M- J: T2 N5 V; e9 _
fd 1
7 U5 ?4 d+ y6 i

9 }1 Q+ J9 ]% p1 aifelse(other turtles-here != nobody)[

) n2 [$ B! O- D2 `% V6 ^  I7 x8 ~
set customer one-of other turtles-here

' D% B) o+ |1 x9 a! L
7 e* _8 b8 t- P;; set [customer] of customer myself
8 z. e$ V/ b/ W! o9 n

8 F) g: a  ^9 G* |set [trade-record-one] of self item (([who] of customer) - 1)
) V3 X% j' N8 A3 D6 x[trade-record-all]of self6 L/ A0 \% Z% |% A5 u
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" [6 N+ T7 @. Z# i$ l  O
5 y0 k, O5 {. S0 O% d2 t4 V0 Z
set [trade-record-one] of customer item (([who] of self) - 1)# E$ p. c  j. l0 e* e# o- P8 t, m
[trade-record-all]of customer

2 W' G! ~: B4 s. y6 q. P3 O! `; o( X8 U
set [trade-record-one-len] of self length [trade-record-one] of self

. i9 N7 _$ L# k- t4 Q, D/ ]+ ~9 X$ a4 U+ }& [1 H4 y; R
set trade-record-current( list (timer) (random money-upper-limit))

2 _4 S0 T' U0 _' m7 A3 d% v  T9 F$ z- a" f& p' I6 o+ M
ask self [do-trust]
! \$ `( X* X  M% R;;
先求ij的信任度
) @$ r2 U0 ?  P6 ^  y5 H& c  ?( d8 K5 M
if ([trust-ok] of self). @; |# Q) |; q! t0 S
;;
根据ij的信任度来决定是否与j进行交易[, n: Y4 ?5 M# c
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' f2 S/ a! }/ C% I
, j2 @) y' I) }  K# F
[

- S6 D  F( \- `6 U  S! G+ J. u
" b- v3 j+ v3 i: \6 Tdo-trade
+ N9 p9 {) r! W' W% Q

- ]1 T3 m) j2 w$ e! h! hupdate-credibility-ijl
/ L# U' w8 ^9 e
" v) e/ r( R! V7 d( W, }) G
update-credibility-list1 x! X3 I( Q& ~

; T5 V4 U- F( W! }: w* r
4 G/ f* ?+ s' N& {! c0 O# Fupdate-global-reputation-list
: c/ J" I% T/ {" U9 m! J
# b$ c8 |/ u* M. Y1 b
poll-class
3 [; l* m$ r8 U) \1 l

' J2 I2 e, |% d' q3 V& l  hget-color
4 S8 }$ u- t1 a3 @3 B

! W' E/ w& T+ K$ D, F# p$ h]]
! [3 l0 A; [$ s1 R; a5 E2 r, [1 z2 U- S8 B& v7 o/ ]4 V* I  o
;;
如果所得的信任度满足条件,则进行交易
( W2 W. R9 W: [/ I6 U- e9 w: t7 ]. r6 D/ F2 Z: |1 [/ ?
[

. A$ c8 Z4 Y  w+ }9 d2 q, T, l  w- G3 i
rt random 360
- S* N; e8 U/ l. T' U7 j: h. R
6 [  k; n6 c! |+ W
fd 1
" C  S7 l* I/ D6 k' C' X

$ L! j4 k  i6 v]
' w7 B/ L1 r4 {* `# _% f
  v) m% i; J5 o2 \
end
9 a( [1 X( J7 g' `  v, e2 b

* K5 d( o2 E# }: |) f/ xto do-trust
0 u$ Q$ ^' @% J. Y3 c  P0 eset trust-ok False4 @$ O. ^4 X' y7 |$ _" d$ J, R
: ?. ]; F$ d2 G/ g( k

, ~. p' t4 Y/ @& L. W8 Rlet max-trade-times 0! |5 E# k6 C1 c& x+ a7 z! c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 `9 m# w6 ]# E* k0 h: A
let max-trade-money 08 j; p& }" l* g& k( X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ b1 t- `) u8 i  V. j$ K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ I. P+ A" q# ~1 O: W% \

6 X: r( p; j$ z& i

- h6 V; b" S1 D% j8 f, wget-global-proportion) K) C$ _) G' e2 I1 }& l, b
let trust-value) F2 b, A  n  G6 }: P# N  n: _% e) E9 U
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)

. n; ^+ i8 F  N- N3 Lif(trust-value > trade-trust-value)+ n2 K! r! @- H0 I" f% C1 E& n3 f" j
[set trust-ok true]/ x- O: `7 p8 l' A; Z
end
  L/ v  i/ C% s5 g1 x6 Q1 W( y7 v, I, X; {, m+ v
to get-global-proportion
8 l7 k# M. r" nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 e1 d4 |5 m4 _6 \# E; q. }
[set global-proportion 0]
7 \3 |  ^' K; J5 H; K' ~' b7 c( Y" G[let i 00 p" ?0 v$ D+ J3 L/ C  q1 ?: v7 a
let sum-money 0* z' K3 k4 F$ r8 @4 ]
while[ i < people]4 u$ Y. R3 }* ^4 v6 H: f
[
4 K/ E1 `8 S9 ~0 n7 ?if( length (item i
4 y6 U2 l6 B# d0 z# g! ^5 x[trade-record-all] of customer) > 3 )
' I6 U! d0 m# j# u* }9 l* U
[: ~- G% c# a* ]4 M& J! ~, }8 o+ j4 Z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 o# O/ _$ G/ L
]
; v7 y( ?6 b, _( C]( N# x; |* [% t1 X
let j 0
: h- Y! N% P1 q3 k5 v) I; Q" Vlet note 0
+ `4 n2 y5 a* c4 Swhile[ j < people]
7 N, t( K# h, w! G4 `1 f[" Z& v+ u  s" q7 {3 O0 y4 ^  h# f
if( length (item i
# s+ r, e: \! y# [9 p% |& `[trade-record-all] of customer) > 3 )
/ A0 ?. F8 {2 i8 n
[1 {( P4 d5 f2 t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* D+ t0 x* i7 E6 [1 @- M5 Q0 v
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" ?' E' v( J7 F4 H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], g' m( l. F# B* g' d" j
]7 [8 E  J1 @: W/ c/ {8 J% S$ @
]6 {) y. ?" P9 I( O6 U# l
set global-proportion note; V! @# o0 u% K, z4 ?- n* C$ Y6 K
], a1 X, `$ Y$ H; K# l9 {, j& e
end
" y$ W3 K, ?4 p  R6 M
& W4 M( o4 s) ~8 W* z2 |) ^to do-trade
# V) ?7 l0 f1 y( ]: ]( q;;
这个过程实际上是给双方作出评价的过程
6 q$ i/ x& g( \" I& f+ @7 U0 eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% g5 `% X4 e$ n: V1 S' wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: G5 _3 ]8 r  S! w- X  Uset trade-record-current lput(timer) trade-record-current
- ~! j: V: N7 I  R) ~, x( D! \6 x* @;;
评价时间; o5 d' M1 N+ j
ask myself [
- g& C" l6 J7 ?: iupdate-local-reputation* P, V" q3 T! t: x
set trade-record-current lput([local-reputation] of myself) trade-record-current; D, r+ ]) R% }1 F  \/ A
]
' U" z) |9 H: r) k( N2 e7 Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. F% \: I) F' n7 d; R) D$ n8 h" A
;;
将此次交易的记录加入到trade-record-one
. X0 S  }, X9 Uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). \  _  Q: ]  h# {# G4 L, [- U
let note (item 2 trade-record-current )5 B* ^8 C" f' z9 \) _7 a+ a
set trade-record-current
  k- @5 k; l0 v2 g1 E- |(replace-item 2 trade-record-current (item 3 trade-record-current))

( J7 j. I- Z9 q; T( L2 |set trade-record-current* R9 P2 p, Q# F7 v) J
(replace-item 3 trade-record-current note)
4 K1 t2 Y  N$ y0 E6 X% M1 Y( e. R
9 c7 o3 @, o& q# V* t/ _7 t
ask customer [
& t5 Z; x6 T4 A/ v! T5 tupdate-local-reputation
5 q5 U1 h8 T' lset trade-record-current
% u$ Z2 |( }; O4 t- k4 j$ e) C(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; \) f3 z8 o5 N  {]
% c+ ~1 U' F' V- B: l
, A' U9 Q% y1 [5 [

) {2 t$ H2 U) E! Z$ fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 w$ x- s2 R3 D) |! @! {" c1 x& S* g
) E3 g5 a5 Q3 z, q+ s8 v: U
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ @* V- ~5 |& O;;
将此次交易的记录加入到customertrade-record-all
/ z( E! r& X0 Y, i( \( Mend/ M  g& {/ P/ U5 T' v3 `+ Z7 y; P
/ a0 z, O8 A5 a6 M4 D9 ^
to update-local-reputation
0 g: s! U" Q# H6 E9 Z0 Mset [trade-record-one-len] of myself length [trade-record-one] of myself& Y- ?8 p- u5 L+ C( O; {1 N2 }' v5 @; }4 b
6 {8 E+ }  A* D- b: M6 j% e

; M6 r5 i) H$ U& M;;if [trade-record-one-len] of myself > 3

8 T2 t# h  Z8 q) \5 a' Q7 Jupdate-neighbor-total
$ k! k3 a% M9 m1 F;;
更新邻居节点的数目,在此进行+ |- j  N& N' H- X! t0 V* f
let i 3
. u7 ?2 j' {. P; Z, B$ Mlet sum-time 0
, x% d$ X- z7 @/ y3 ]6 U/ v) n# Ewhile[i < [trade-record-one-len] of myself]1 s" _5 U) L# I3 r6 |: C* B
[) k6 G$ d1 q1 K7 v* p3 D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& I: V; f0 S/ S& ]: M6 x. uset i
* M( R. B0 s9 E7 G5 j  m( i + 1)

2 z6 {/ t! X; R, M2 Q( j0 W* d]/ b4 w* h- f( d0 `4 C$ \
let j 3
) _3 t; U3 V8 Jlet sum-money 0
3 G5 Y4 I, x" ^5 ~0 Bwhile[j < [trade-record-one-len] of myself]
+ Y$ i" c. }% o* j. F" x# g[# o+ i- t# [/ V9 Q$ w1 a1 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)
) {; G/ ?% ]+ n0 M& b$ z7 G% ?set j
" j# d% u# e9 d3 y0 K, d5 B2 _, u( j + 1)

( }7 t" G1 q/ B0 \]
- V2 w6 H& O% t2 ylet k 3
  g# X/ Q6 y, {1 J8 glet power 0( W* s+ U* |: Q2 N* g
let local 0
# @$ g2 x1 o- k. Rwhile [k <[trade-record-one-len] of myself]
' V* L# i6 w/ k+ f  e1 M[, ^& s/ M, z/ Y! ^" X
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 ^; _5 }6 e+ D* j: {# L, D
set k (k + 1), m! }0 c4 E7 K* f; R& L
]4 p! z7 @4 x7 @7 E  N1 j) U( j
set [local-reputation] of myself (local)  L8 d9 {. ~9 i0 f# e" f
end* s5 k3 G0 p# [4 P% u) A$ ?- Y
+ @- x" z5 G! t5 K$ t) F
to update-neighbor-total* U9 `  q: I; O" j
( Y. ^7 T9 P/ f: l0 `5 }3 C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 s# Y1 C* R  k/ @
; D5 M6 ~. g5 T- z3 v
+ w7 A! ^2 Q. V/ C  g7 I  s
end
' w  \3 B: }# ]
* ?) r/ S( A: u, oto update-credibility-ijl * D6 q+ f3 h4 S5 G+ ~: E: e
, i) C: A2 p$ W- b9 c7 Z! M; L5 R
;;
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。
; O% o, F0 h8 B3 k& b( D' [let l 0
9 F/ S- I  ]/ {9 P' kwhile[ l < people ]
$ X7 ^) Z0 b) `/ t+ C1 J. |+ J;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
& h5 f- d2 |0 G* q. f+ {0 J[* \( [; D% [9 N9 n; c
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 w4 y9 U9 B5 ~" |. uif (trade-record-one-j-l-len > 3)7 g* V8 }( |% K$ |9 `- Y* D
[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( `3 T1 ]5 z" [7 v/ [
let i 3
8 P- D# C8 d2 j* wlet sum-time 0: P" l& z. F2 d
while[i < trade-record-one-len]1 ]( n$ s- D" L/ F% B8 j7 c
[3 G* A/ h. I; ~9 {! S3 a7 h3 H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ Z, P) V2 v! K5 ]* }
set i
( \$ c1 W% l" R/ W( i + 1)

# B. z/ K$ Y! [  O6 h: N]
1 I0 ?& V2 ~$ T8 m! |let credibility-i-j-l 0/ [' {1 Z! X4 I* g
;;i
评价(jjl的评价)
0 @& U; [, c) r" Clet j 3
% X- R  M/ u* M9 I+ ~2 J4 X1 Glet k 4
/ S) s% v- `$ @- s$ uwhile[j < trade-record-one-len]
/ H5 X; u- u0 ~! `9 }' @0 x: Z  O[  G8 I. o7 a# z. o& i0 J, @
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, z- E' B4 Y: p5 J
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)4 A( \( s8 {7 Q3 i5 T6 A
set j
3 u: ^) w. V3 m9 X' M: \5 U( j + 1)
7 e/ \+ k+ e! a6 ^+ Z6 `) x# ?/ J! t
]7 L2 Q  I+ g# V* r; I8 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 ))
/ W* s: R# e$ H$ _( v# o8 o8 R# \  M
, A( H3 t5 }0 s( J0 x* P3 C% I
; \3 B8 k$ p7 M8 Y# e8 [  B5 D, e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 v1 S8 I; r+ B2 l' S
;;
及时更新il的评价质量的评价0 W7 C8 P+ @. A( E- U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 p3 ]# ?1 t+ z1 r9 C5 `- |set l (l + 1)  }7 z8 i# ]: B: z
]0 }- q: g- c( i
end
( U1 n, c' q' P* s+ b2 A* }) K5 Z
$ _2 Q# {) S& Y! v- D+ sto update-credibility-list
. _( {+ c$ A: q& V6 D  wlet i 09 a) T; W" O2 `- s! x" q3 u8 a8 J
while[i < people]- Q0 N  g9 Y9 {" |5 P- l( \9 c
[7 D. W) J/ W2 k* S. P) I! v  B
let j 08 {4 M! f- {/ G) H
let note 0
2 @6 [& l& U  z* Q" i* slet k 0+ W# k3 G' `- I( R
;;
计作出过评价的邻居节点的数目" r6 n- k! o2 c& P, R/ k
while[j < people]) z6 e8 l2 O; j8 z' o& _3 U
[
4 Y: P+ z7 }: {) S7 C0 K( oif (item j( [credibility] of turtle (i + 1)) != -1)
) ?# M. v4 _: d0 `1 u;;
判断是否给本turtle的评价质量做出过评价的节点
7 }8 H/ t) ]% L8 v9 \6 X[set note (note + item j ([credibility]of turtle (i + 1)))5 i  w/ x+ h5 [/ M
;;*(exp (-(people - 2)))/(people - 2))]

' u' n" `/ n- r. Oset k (k + 1)) `' q5 ^# F3 |6 \+ I$ v
]
3 \. [; S3 B9 {9 ?set j (j + 1)- m* h- n2 c2 e/ o. }  `+ A& p) u
]1 W0 K: F" c5 G. m& v, ~9 d7 m% r
set note (note *(exp (- (1 / k)))/ k)6 {, ?) O2 e% Z% ~( f& i
set credibility-list (replace-item i credibility-list note)2 Y% r8 J* P, v" c! R* K
set i (i + 1)$ b" v. P, B$ D  l
]0 P$ C3 f4 _$ k+ R4 m4 ^
end! f0 [6 B# b: W" }3 Y. M

  I: e( f: y! Q8 hto update-global-reputation-list' y$ S/ `1 z7 U; U- H9 R9 e- ~
let j 0+ b0 }4 v! M4 S1 d% @, o6 y9 T( \% x
while[j < people]- S7 K& x) M1 G7 }" [" }
[. ?2 g! e- P( i% Y
let new 09 ~: h9 s* A4 d% T
;;
暂存新的一个全局声誉
) f: n/ R" H. @let i 0
" j1 v4 y+ e8 D; i  T5 R6 l) Xlet sum-money 0
  v& j  M; Z5 `let credibility-money 0, [3 i! z5 X2 s  Y" T
while [i < people]
1 K9 B  [6 [2 r8 P* S9 u[6 w& F3 w- i9 p) M- b9 m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 r) [9 }0 V: ]: q; D3 h+ Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& x  W) o7 e7 |2 ~6 S% }8 H
set i (i + 1)
- t1 e6 i5 P/ `2 x]' M/ R/ @5 R2 @
let k 0/ v- r+ L! z/ |  Y  }' q" X
let new1 0. l1 u- I, I1 t2 a" W$ t' Y" _
while [k < people]
# i* `+ U$ Z" b+ c' ?1 ~[/ }5 x' N0 ]0 I7 Q$ M7 L1 t
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)  g# D6 h, A# _+ v- M; u) D
set k (k + 1)$ r7 ]/ _5 [$ Q: }
]
% S9 l1 M- w5 c/ k- Gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # V, l9 {4 ?+ ]+ o! @) ]
set global-reputation-list (replace-item j global-reputation-list new)0 P5 P) L: H- n5 v/ t
set j (j + 1)
$ W3 ]( w0 i- j' y]" ], ?1 A! S7 U  w4 `/ w; c
end
% f# S' q( `! F: S# Y  w. d7 U0 n

" {* S4 |1 l3 e3 d: I! k: P7 j' Y! F3 S; w: Y/ ^1 x4 W
to get-color  M9 w/ o7 M2 ~0 M

; R; g) m4 l* p; {  Zset color blue

# p, @3 o/ D3 I5 uend
3 t. x8 A4 e* d. c8 J" w# l
: J1 D6 x0 A( w: pto poll-class1 v3 B8 w2 |- {2 p: v
end# o' X$ J, [/ l& m& L5 X+ [! a

) [- O' I$ R: k1 V) n/ m) u! t3 ^to setup-plot1
( |4 D' m- a- w! l$ F1 a5 f5 y9 W- z5 i% [5 m  n! z
set-current-plot "Trends-of-Local-reputation"
: d% H, J% _2 G* }7 ^8 N0 `

9 |/ Q# W2 P3 ]set-plot-x-range 0 xmax
8 N' v+ M1 n2 [' J' C+ M1 X. F4 V2 x
/ |; m- Y3 Q. J7 X. G& `
set-plot-y-range 0.0 ymax

. c) z. Q9 N; f; g; K* eend
0 F" v' Y0 C) z$ R' [6 ^4 k! o/ _0 J9 k& j- \
to setup-plot2+ u: ~3 r( Z6 r, ]& q0 l
1 N0 a# b6 E% E6 g# Z/ b" H  ~
set-current-plot "Trends-of-global-reputation"
5 {9 l4 u6 j$ C) W3 G
( D  S; ]) ^6 z4 N
set-plot-x-range 0 xmax
3 H% O2 M6 ~( s2 b4 G' Q2 Y/ S

. W" E9 s( J4 [: n  q* Z2 hset-plot-y-range 0.0 ymax

7 J+ R7 ?0 u& }5 Q7 q& `8 a  oend: u6 V' k' N  P0 `
# }+ p( w. k6 E5 _8 P
to setup-plot3
! Z2 [; f6 x% g$ I! b7 y. k  }. p$ z0 Q9 {8 i6 r( w( `
set-current-plot "Trends-of-credibility"
1 j/ O+ M" w) e  E4 B5 x( U

2 X7 j) B$ z& A% ]4 X# pset-plot-x-range 0 xmax

; |) [7 }9 b) j8 k3 `( ]' Q
- m) V' a3 e( A( f$ d3 L- |set-plot-y-range 0.0 ymax
; s! `' l! s9 |
end
& d: a3 E, I' L4 |. h) P
' W: r( r. U4 P4 \8 u. @to do-plots6 r9 \: ]* W+ ^2 m# e  E# V' F0 A3 X3 t5 f
set-current-plot "Trends-of-Local-reputation"
$ F* i  q: E4 w3 s1 hset-current-plot-pen "Honest service"
9 ?7 ^' N- Z" Hend5 b) d- q4 j% L7 B2 \# M9 A
' |. c' t! i  o6 A& n
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
; C, y% e5 ]7 w3 G
* w/ ~% k8 h7 w$ \7 s/ o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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