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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:& f, E. E, M* F
to do-business
! u% o7 P% D7 l: O1 m; s" `% O2 J! K% w rt random 360
* N) G2 w& q3 O8 ^# t$ q3 B fd 10 r# g- W) t3 {% b
ifelse(other turtles-here != nobody)[
7 n. l2 m! R5 V$ @( L   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.
5 k  m' n1 z6 \( d) r   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" s2 F8 P! Q# O' M& }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; C- b0 z8 o; m$ [; B9 L   set [trade-record-one-len] of self length [trade-record-one] of self
* c6 ~! ]! |4 e2 x/ d* {2 D3 S+ [   set trade-record-current( list (timer) (random money-upper-limit))1 N8 m0 k0 Y! J0 l7 `! f

7 [: I4 H# _: w6 m* q- S问题的提示如下:
; B# k. Y, y7 k6 f* Y' d! [! T4 b% @% X7 X: b# j* a1 w
error while turtle 50 running OF in procedure DO-BUSINESS6 E  ^6 G  X: P' o8 ]8 O6 Q4 I" L
  called by procedure GO( |) Q. W2 @0 O1 A6 u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 M4 A# T( C" D* q
(halted running of go)! a! U# b, G3 H
  x! f% s; M# I+ M
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~~
. V9 x) M; p/ m- l5 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
6 \& l4 s9 n/ tglobals[3 \  f0 ]: I( l' ~% H# @  D
xmax
# K: M; d+ F, ?# W& Cymax0 t2 I3 e& n$ Z" P; L
global-reputation-list! \9 |9 i; [9 B# y4 h: S+ D  X+ m

, v7 Z- k/ }3 `9 t/ u- b;;
每一个turtle的全局声誉都存在此LIST7 T/ L( }- \, w, o
credibility-list  k, X8 g3 l, o9 x
;;
每一个turtle的评价可信度
% j! W7 ?2 @' V5 G* K- hhonest-service! U  ^( O! e2 a+ Y5 g3 v
unhonest-service% R3 }, F$ A  A+ V& N1 U
oscillation7 b% z; s4 {3 ?% H& ?
rand-dynamic
* |( s6 Y4 E+ u- K]
" h% H& m; m( A/ @  \- u0 b5 [7 j! a. {
turtles-own[. q0 k9 ]. d5 ?3 @8 V
trade-record-all
, e" T' X# ~( ?5 {. @;;a list of lists,
trade-record-one组成* t4 f$ C- }+ c# i& v9 K" t. @
trade-record-one: @. }1 |. ]; b( O- X
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 _$ N$ C6 Z( e+ e& U1 _& L" \" d2 }4 z1 z* B
;;[
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]]
0 u/ T" Z2 _+ V$ etrade-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]
  i* {9 X9 y: V) m7 v. {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; V, p$ L. w, p8 A  [$ r. S
neighbor-total
$ i' T: P7 Z# ~, ]. k;;
记录该turtle的邻居节点的数目
) `8 `& U- y! d4 Q2 `9 D3 Ptrade-time
. u9 g9 U0 F$ Q! X;;
当前发生交易的turtle的交易时间( L, n( L# s* e: F; E# W- E" [
appraise-give
1 m" h" s5 C, I8 S6 {;;
当前发生交易时给出的评价
9 W1 K: S7 J8 n$ r/ _appraise-receive# U6 H. G% G7 W/ _3 R4 C0 v
;;
当前发生交易时收到的评价
0 R+ r' z* `' w% B% l. O! N. s9 A4 U5 j& Tappraise-time
% U, w& J5 `( O/ j- h3 O  {;;
当前发生交易时的评价时间; H% e8 ?4 K" S# [, m8 D, p7 Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! V: U& |! D) [" Z' s! Vtrade-times-total$ G5 x  I$ B/ i7 d: x: D
;;
与当前turtle的交易总次数
6 }: s# Y1 h2 {* ktrade-money-total9 K* T- t4 J: Z- w" }8 E
;;
与当前turtle的交易总金额
2 `) N# X$ a7 e1 y* P4 Q% C6 jlocal-reputation
* d7 k" a# O3 v: a; R# H# Oglobal-reputation2 P. @0 }! w, _8 W% S
credibility9 {& ~/ Q2 ~* J2 t( `( ]
;;
评价可信度,每次交易后都需要更新
" N9 L0 I. b- o3 A4 T6 _credibility-all4 v3 M- {6 ?. N) g( s0 e6 B% Q, g
;;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
# d. V0 d/ f6 i6 l. x, S" r( y3 K7 C+ S9 ]1 j5 F9 C. v
;;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
( X" S- r% i" R4 J/ a# `credibility-one
( t4 G' W2 q+ h9 @: y% @' Q3 }: B;;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
0 m5 k4 @- B5 J: \3 Bglobal-proportion
* ^) v0 C& F0 Z# ]1 B2 D* N1 E2 }customer8 ]6 ]& m7 ]: _
customer-no
& E  t# s6 g, a6 etrust-ok: q8 o3 N: o/ k& h. Q4 z
trade-record-one-len;;trade-record-one的长度" B1 o$ z# X1 V
]- ^9 C7 R# }3 a4 U6 ~
$ f- N3 l" [! z' U- `# r5 m. F
;;setup procedure& _! M( Q/ [* F: q" i4 _3 ^& [- D. O

8 l8 V* P. b6 dto setup: T% P7 U0 U0 v9 [

5 i/ q+ {2 T3 z" L3 P+ uca
# l# ?* L9 N% l( N. I+ @- ?

# S! j8 `1 [" pinitialize-settings
7 ]( V9 Y+ n/ t7 B" W

/ G% T6 i$ Z; y8 C/ U0 Ycrt people [setup-turtles]
3 ^7 W- W2 W% H, q5 i6 O3 r
% H/ ~' ?& P; t9 J2 i4 f
reset-timer
6 c1 L1 T$ i" b) T

  a# T; u/ X! R( Hpoll-class

3 ?' p, Z" `0 k$ b. c
4 A/ A- {/ F* ^. x& e% w5 T) Psetup-plots
9 S. V+ r7 K/ F) A' u# `. Q7 }
+ I' N' s3 `4 |1 U# \' E
do-plots
. X9 C4 i$ E. g7 v/ w' [
end/ }6 i8 z1 M4 I) p4 v9 I7 }

  ^. l$ I, b- ?( ~7 c: [0 cto initialize-settings
; {$ z# @; Y! L
4 ]0 r4 ]: X  b9 ]% k  kset global-reputation-list []
5 `7 Q3 t. V; N8 {+ E
! w% |$ x8 ^- u6 i. S. B" w
set credibility-list n-values people [0.5]
# C& I! o6 V' `; ^7 t5 A

: \* I" }- f' a% U! Cset honest-service 0

: T. x( ^8 h/ V+ E. m& l
2 ?4 m4 ~2 d3 R# m, xset unhonest-service 0

) f9 |3 p  H7 u6 D) a5 V* j: Z; |( t! D% n- ~0 u& n1 H* `
set oscillation 0
- q5 S, N5 {) l( V
+ ~& l6 _7 w/ f* f8 x7 ^# G
set rand-dynamic 0
* [# ^7 _/ e: x1 A+ I6 b) A
end. ?. S0 G2 M6 p5 N9 \9 q+ |- P

; W5 \: U7 }5 A% uto setup-turtles ; l# k/ V' W9 i$ ~
set shape "person"6 l1 S& [2 V+ E
setxy random-xcor random-ycor+ k/ ]1 H2 T& @
set trade-record-one []/ X9 `" C$ T3 c! @$ G

& d% L$ l  ]( a* T: C( l1 d# iset trade-record-all n-values people [(list (? + 1) 0 0)]
4 c0 D) e6 @& g2 R# p5 E9 V$ k/ \8 D

9 ~( v  s6 l- r' [set trade-record-current []$ m# V; a' F) D
set credibility-receive []
5 D9 Q1 m* B: S( Aset local-reputation 0.5; I* Z2 p) A' s8 D9 q
set neighbor-total 0
5 r! ~; ]" `" Gset trade-times-total 0
' U" b; p1 m$ M  Rset trade-money-total 0
# g7 ]' V( K) ~' G) i; r* l0 R) ~9 {set customer nobody
( E" c/ |/ [3 l: [1 Jset credibility-all n-values people [creat-credibility]% G( G+ j6 C. I$ Y/ c4 i
set credibility n-values people [-1]
3 V0 E" }2 n, i4 z% rget-color- w; e; B6 b1 ?
& N- k- J* i: t3 f9 g' z8 {  s
end6 K8 Z5 H) T' G* I
4 C8 S6 S. {( @* z. r) t
to-report creat-credibility" \- k  x! B8 C( }
report n-values people [0.5]! r3 W0 e8 _3 R
end+ |0 A/ G' N1 }
: }4 C& Y% |, I  t- |  E9 C; v
to setup-plots7 G& y$ j1 _" X# N. k

: ?% E/ ]9 p/ b- X: ~* s$ iset xmax 30

/ S5 s6 U# F+ H. `6 M  U9 {# M  d! x0 H% C( n
set ymax 1.0

8 O- v1 _6 w( |( F# L  P; @' e2 D* _4 k  f, O" c6 N1 j% H
clear-all-plots

7 j6 ?4 i9 K8 L% L9 ]3 s3 [- d% \% r! y9 I/ G1 l* @
setup-plot1

5 T7 e* C2 \3 F, a
% l& X% m0 b4 k7 K; Lsetup-plot2

9 i0 e) Z8 S8 Q2 E) \, V2 k& @3 d) u" ^: n+ `  ^
setup-plot3

4 g0 w) w9 Q9 L- V& _2 J. e- `end
& G0 g2 ~3 X+ E0 U2 ^4 G# K* Q( v# V0 S1 L3 Y" s* k& U  `3 N: l
;;run time procedures
; Y2 [7 J5 [7 D5 P
* e4 C/ l! O7 _" ]5 @" Cto go* {7 m2 p: e/ j( t+ s

% T3 W8 W2 S; ]/ A. t! c. u% ^ask turtles [do-business]
# M6 A; P, [  }: ^& Q* f
end4 K% n% z1 M  ~1 {. ]

0 W1 q# N& M% L+ T' r( e* K# u5 Eto do-business
" `: m' z' N& _" }8 Y2 n1 M

+ K0 E( r2 Z7 U( d3 J5 F$ q1 {; M' E- A8 {5 w
rt random 360
2 X: O6 P0 k5 V! z$ |: ^

! e* j9 \! d: q+ O' e: Afd 1

$ ^' f# ]/ z( m# D. S/ T
* w0 }. m7 n; [* ]0 x3 x) }ifelse(other turtles-here != nobody)[

: E. x3 d) J8 v% e8 N) V* e5 {; l
# `; q2 S: L8 p$ sset customer one-of other turtles-here
9 e( V3 M& a& I( k5 e

# @  c' {5 ~+ M/ V# j;; set [customer] of customer myself

, Q8 m) u. Q& P6 _7 I
; m6 u3 Q# o5 O& o" F0 r9 }+ q" bset [trade-record-one] of self item (([who] of customer) - 1)
+ H* S) d, e$ w0 i, M4 w) n5 W8 p[trade-record-all]of self
6 e6 e: a# C  Y! F4 _' c  _& K# l;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 R( o6 i( H: w
: q6 Z! o. r* h: q+ w6 h
set [trade-record-one] of customer item (([who] of self) - 1)1 ~2 p. w+ o  P  F, }! C
[trade-record-all]of customer
% |' z* i4 P! S! }! C- V
3 L: V# A. y( S1 Y8 _
set [trade-record-one-len] of self length [trade-record-one] of self
, k$ p5 |" {! {: U( N2 ~

! N0 t' R, }% g! u" Dset trade-record-current( list (timer) (random money-upper-limit))
) ]4 ]) r& L$ w# c8 {# |
4 J7 l" z+ |3 n$ ~' K5 L, z; a4 P6 T. z
ask self [do-trust]: i! x$ ^5 [. {; ^6 @9 d6 U
;;
先求ij的信任度
  Q3 c5 M5 K& Y1 ]* p+ R/ C) S! n6 `) C3 d/ y% g7 _9 p/ e7 N
if ([trust-ok] of self)
( T! ~  U' r% z& M4 o7 j;;
根据ij的信任度来决定是否与j进行交易[9 N+ p6 W& a8 c9 F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" U- q# `" [( E
% c/ J) v$ m" Y+ s2 o" f. |[
) r+ [, S+ l& E
/ e) I* A3 {, D
do-trade
$ F) J$ ]" X+ H' n3 v  K' P3 i
- u2 T( {: p/ \9 V- i
update-credibility-ijl
2 @4 u  ~  m3 \9 n/ j9 O  w
5 l- r3 r4 `0 R( P1 `: [* H
update-credibility-list( s& R- O6 u$ Y# Y

5 }8 Y- n/ T+ o: {9 l: Z- E
) }- `& r/ }  ?; E0 t4 s* s4 Yupdate-global-reputation-list

9 x) ^  H) ~4 K5 V3 f! F3 E% u
& {8 e0 ?$ i# ?- Npoll-class

4 o6 r0 v: X; ?/ _7 y
: g: q# K9 W4 C! N% f8 B0 Y; bget-color
, f7 Z. P& _3 ?0 P( k! I7 ?9 x

' [6 Q* R3 }4 e2 \]]
- E- [$ f7 P- Q% B+ }1 `8 r3 r) @7 Y7 C3 c" M
;;
如果所得的信任度满足条件,则进行交易
4 d  {" ?  G: K: A+ N6 W' d& P, Y# I9 t; Y/ A6 \
[

5 u" M9 V% H- i) Q1 e3 P
7 l6 }( z8 E/ Y8 j6 b1 Z( lrt random 360

, B( V$ n: w3 B8 y' A( I5 t! H) m) B5 X- F# |$ J  f; u; N: E0 k
fd 1

5 r" a4 \7 q! R1 w4 X1 S
2 q1 k0 ?9 B1 S" n" X; v]

3 k5 e, ^/ F4 a% Z) a1 F# g' n' j3 o
end
% f% N! ?+ l/ c/ ~  A/ b

% ?! y- d0 ~& r) ^8 Bto do-trust & e  ~( e+ K% d! U' k
set trust-ok False
1 ^9 m; A1 L4 X% D) {1 {8 \1 q! F4 c2 H7 l9 _5 L! @5 v
; ^# t! C! _& Z9 W+ A
let max-trade-times 0
7 Z5 j; w! y9 yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& s! {) k( g$ l0 h) z+ V8 E
let max-trade-money 06 S& L4 N' \4 Q) Z, q. Q; N& n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 E3 x( X) N2 h  \4 olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 o+ Q* t5 w2 @9 W, G8 l: h+ C8 k1 A: y3 t% @
; h3 b6 y: e4 b' I+ x! v
get-global-proportion
. ?* b1 x4 W6 G- S- u, v/ flet trust-value
, Z8 T+ z+ K7 m- Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
0 q1 {% b( B2 J) e3 s) m2 E, q
if(trust-value > trade-trust-value)2 X  E$ x5 m; v& `4 ~
[set trust-ok true]
3 {% |, T+ Z# B1 d) s! k5 d  Fend
  f6 `  N9 U1 `6 x% l) r2 Z6 G& i' B. u2 c
to get-global-proportion
& z4 M) V9 s  l/ z# s5 wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 H4 @0 s$ m4 R8 H
[set global-proportion 0]' ?* Z( [8 `2 n& m/ y! @  A
[let i 0" @! u) a) }+ A, j  l/ t4 P4 z& t: p
let sum-money 06 A7 O5 ^# {% o, a6 ?7 Z! w( A# _. ?
while[ i < people]
2 l6 U& P  O5 O& f[4 \( m8 B9 q; d! w* C
if( length (item i
9 O: v$ u) k: j! U- v  ~2 B. C[trade-record-all] of customer) > 3 )

& F$ `2 T0 E1 a- K! ^6 L[
# P- O* D( u" o; Fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 R" ~/ g" I' K' [  u$ R- ]
]
7 {6 k+ W' P$ w. x. z]' E: n' n: R2 d/ u* R: E
let j 0: U4 x; P* n* V4 ~8 k1 h/ Z7 X8 Z% D
let note 0, G0 n4 U) j. U; B% F# K! ~
while[ j < people]
8 w! C* H, H$ U) C; }[
! }7 h  e5 D6 P1 H2 D/ Jif( length (item i
2 N( J2 E6 e$ V7 o. D; o9 p& w[trade-record-all] of customer) > 3 )
! a4 i* r) u" ]
[7 N1 ?  w; Y* p6 y- q/ @% z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% i4 K* U3 l2 k" ]5 b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 i9 ?+ e, X" {, u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' ~' j+ \( }9 U" O3 I) R
]
% A* Q1 n5 Q* H) z7 {]8 Q- Z% j! F' O0 }
set global-proportion note
) J" G# ^* F- c, A  x- s& @1 A]6 X2 e# a0 h( o" r3 X2 M
end
2 m1 }" W9 c% y! I2 O# ~
: C% E6 \% @, Q( M6 |to do-trade5 a% t( p& Q: v; f+ S/ D
;;
这个过程实际上是给双方作出评价的过程
$ M' o, K3 g0 T( Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* Z. P% O6 H/ W+ q9 i6 `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ w8 t9 X6 j$ W( u" y5 Z
set trade-record-current lput(timer) trade-record-current- k. X# _6 f$ Z
;;
评价时间
5 U2 B9 \# o3 q/ a  C+ [5 X9 p' {ask myself [, o4 G4 J- p! C" a1 N- R
update-local-reputation
- M' |+ w  e- T: Gset trade-record-current lput([local-reputation] of myself) trade-record-current8 W$ m' ?9 q: Q- L
]1 j; K- A, N( D7 s* c5 ^
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. O7 e+ A1 _' O% {;;
将此次交易的记录加入到trade-record-one( o, }3 M, J: V1 x8 A- B0 h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 R' k4 G5 s! s  b* [& `0 Z1 |2 S) ]" ]let note (item 2 trade-record-current )( c; Q9 F1 g' g
set trade-record-current: _8 c; ]# f1 y
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 d! ?3 v$ y) N$ a. D8 G% ]
set trade-record-current
% F$ V% @9 c3 }(replace-item 3 trade-record-current note)+ i1 ?; _( z8 J( `

$ @4 V( C+ i! j, M2 |
1 {) {- l2 s6 {1 V9 M4 b9 u# c, D
ask customer [
. p+ s/ p& f* d" A' Dupdate-local-reputation
( L+ C1 m7 X$ n2 lset trade-record-current* Y1 J6 {( y7 s. F# B6 m3 j
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ Q4 v6 y7 D, m8 E, R
]
# d, S) k+ G9 C4 c- W) @! Z* v& G: g

6 D1 q! F% |) l6 }0 Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! Y* P: ?4 v8 D2 o8 M* |: x: f+ G0 s

6 @4 L3 x$ E5 ]& cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 A8 g( V9 ?7 }4 |;;
将此次交易的记录加入到customertrade-record-all) d' R! [! v9 W1 i
end8 n; E. x' h6 \7 Y

( {0 h0 z# C% Dto update-local-reputation
% R$ I* R* i5 H2 _. e( Vset [trade-record-one-len] of myself length [trade-record-one] of myself
1 p7 s1 f3 Q( _+ u8 S/ _$ _
. P# v& X/ e( x7 f. i3 Z" K4 W; K0 I7 x9 Q# V2 b0 Y# h
;;if [trade-record-one-len] of myself > 3

+ P4 C, V5 k/ A% Fupdate-neighbor-total- Q9 i  x3 l! D" F4 y
;;
更新邻居节点的数目,在此进行1 N" T) }! S/ @! T3 R
let i 3
1 g: p% O2 T- Y. l: M7 Qlet sum-time 0
6 ]) H8 {. v5 @# Y5 F2 mwhile[i < [trade-record-one-len] of myself]
- I9 z. q, ], j[6 q% Q% u0 W+ L( p0 N- K, g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( ^5 h; H$ `* T. N& ^" {! `- D( Lset i
- B- @3 i1 d' d' R( i + 1)
) u1 D6 x$ `. O* f/ r
]
) @& A' R* T2 Zlet j 3" p1 @' }, a+ P
let sum-money 0
( Y+ s, L/ _5 x& I, w, m# ewhile[j < [trade-record-one-len] of myself]9 g" s4 n  D2 L8 D. }+ }9 N
[
* W& Y- d/ W5 \- ~# yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
) D1 W. i1 m- R1 ^set j* j, U" K$ W' I2 T% s: Z
( j + 1)
) ]6 F. o& x  x% p( `+ ~
]$ e" ~6 J& F- ~5 E
let k 3
% d, L7 S& M1 c$ g; R* ~let power 0. c: T1 L' P5 u8 Z  ^  P$ e7 V
let local 0
$ t4 Q9 z: m3 z* B1 gwhile [k <[trade-record-one-len] of myself]2 B7 Y7 Z: \2 h, l6 @
[
  K9 n% K2 }9 s$ y1 iset 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 o' W* M- G5 B1 iset k (k + 1)  V1 c0 c; s- W, G0 W; [
]
% R4 B1 M" O+ b; pset [local-reputation] of myself (local)1 e, O6 ~6 r9 I( T4 v. Q
end3 D, ]5 C1 H5 q. N7 n
. x1 `0 Z  k" S; q
to update-neighbor-total
+ Y, H, F& D- b5 \) G* e
1 H. H% @! Y- ]- Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 T3 o& v- d2 ]5 \: n( S
" I1 e7 e! G1 @8 |& v
( [% n- \: |; G; o3 O6 [, b
end. J  d+ ^1 _+ P

: i* i: _  l: ato update-credibility-ijl & O% c, d9 o! c! O
; n1 @* g( G3 J. I6 a
;;
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。1 X: G/ j) Z; P5 u0 W$ C
let l 0' c6 }! N+ ~9 z1 F; P& G' Z
while[ l < people ]
- s. Y, \! S1 L9 t! 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1 c8 ?( }/ N# _  j3 r
[# E' _) H' g% i0 Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% j- Y* B, R  u6 h) h. }if (trade-record-one-j-l-len > 3)' B! n$ G8 A0 b, y. q
[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 e+ O: y! X3 r6 tlet i 3
" }7 I7 F- ^, l1 r  i8 olet sum-time 0" W* o- T- E3 F1 W$ i% y
while[i < trade-record-one-len]/ T1 L) z5 j* b- A. J$ B, F
[
. t: S9 I6 K: ~1 O) e, S3 wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ g2 ?. D" }* `( K+ T  P8 rset i8 K# o0 ^2 _4 |3 k
( i + 1)
$ A( [0 B8 I9 |  c
]' D8 r0 q8 R6 t: o
let credibility-i-j-l 09 A# ^. [, u" g# ]
;;i
评价(jjl的评价)
. _, H' z' x+ I: b: Llet j 3
: \8 M. ^% T" }, Y+ xlet k 44 k3 x! T) ^2 L1 i: C1 v) _) S& p
while[j < trade-record-one-len]0 ?3 L- W2 t! v! v2 M. c7 Z0 g: j
[% ?/ I8 G. T2 I2 p' e- s: M
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
9 @0 i$ ], f* Z8 Nset 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)
! v# I8 s" l' I8 Xset j6 R5 _% r; L' K4 f$ T! k
( j + 1)

, ~- L, p2 f" f5 H7 C]
: U' x6 ^9 V' N1 k3 Q2 ]& d( sset [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 ))
% M3 P; }+ P1 i2 q7 Q8 P# ^9 i: x

4 @9 a6 d- y$ o. [+ o5 g" Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 d& S  P: V# U- j* L- [;;
及时更新il的评价质量的评价4 P/ F- E$ Z5 T8 s/ Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 M+ K: z/ T1 g) h$ ^2 F0 C& Jset l (l + 1), g5 i/ z  k1 {% ?1 }
]
+ n( P$ ?1 c: J4 c" y" rend
, [. n; A8 g. b" z
' X8 _! i0 w  \to update-credibility-list
, p) Y' G: S6 ]* C5 c% Olet i 0
1 U, K( G' J+ N: vwhile[i < people]' O& `8 C7 \* G" o1 i# y
[
. `) {( P( b  y: G: klet j 0- S5 B2 ~' K# C9 a: j5 ]& S  m
let note 0
$ V/ ]# ~. v4 b7 i, f6 J/ C/ Hlet k 0
; u) T8 C* h8 Y0 |+ j6 H; X;;
计作出过评价的邻居节点的数目
1 [, P( f: C. w. @while[j < people]% j# H+ H+ o2 _+ B' s
[
* v! C  l; G" H6 S2 F% q' y3 a2 eif (item j( [credibility] of turtle (i + 1)) != -1)# x: u& H* H; B' t
;;
判断是否给本turtle的评价质量做出过评价的节点
0 ~: x4 _# z, r[set note (note + item j ([credibility]of turtle (i + 1)))
* U: Z7 d2 ]. M' S; d, P;;*(exp (-(people - 2)))/(people - 2))]

1 |9 l- v! }" l. Q" l* S1 L, dset k (k + 1)2 Q6 Y! l+ N+ w6 X, a
]
% X. T' M# I3 H! i2 U' aset j (j + 1)
1 r# `/ n6 ~" U]# n. g' T* F2 c
set note (note *(exp (- (1 / k)))/ k)
; x% W- b# K  q4 p* M. c2 [set credibility-list (replace-item i credibility-list note)
) |+ n( D; t8 B  `; M. gset i (i + 1)
5 o. ?$ g: [) S: D" t" h% t/ h: J+ H' ^]+ K* D8 |4 ^8 w# K- R. {# P
end
$ f" ~! N% N1 r1 I7 J+ `1 q; f3 |" ~# G, N- B
to update-global-reputation-list
' R0 T" k( W3 x& B( nlet j 03 U7 u7 y# F% B
while[j < people]
( z. J' e& Y5 T4 E[" m" n& u) T: `! t, j( |
let new 0
2 w7 v5 j8 y' m5 B;;
暂存新的一个全局声誉
. {' c$ f/ k6 u  G" f  zlet i 0
+ p* X! ]# N& Y; ]- ]: vlet sum-money 0! V# o" M# P  V% ~  {" e! x$ Z3 v
let credibility-money 0  ]1 D' f0 n. h+ Z) l* {7 J
while [i < people]
. o) ^. h, ?/ f3 ~[
8 j8 K8 r6 f  i, e# e* o% qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' q( y& W! d0 r  S# ]0 n) Pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 c/ f( M1 {+ t% ~8 F7 _
set i (i + 1)
$ R- Q% u' `( i/ x]
; y: E4 H$ A4 rlet k 0; B* V. e. x* {6 g) Y- p0 Q
let new1 04 [& G  }" v/ ~- D/ F
while [k < people]  w- r; M0 N3 p) k6 e* D
[
* }5 u8 f1 _6 |5 C+ Y+ n* ]+ cset 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)
2 ^( P7 @9 l: R2 hset k (k + 1)
0 n0 q' r1 ]" r]
" U+ U7 h5 L2 D$ a: \* kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' `0 E! \/ o. c
set global-reputation-list (replace-item j global-reputation-list new)
" \3 d+ `3 Q* Y  @/ Yset j (j + 1)4 f! E9 r9 j+ [
]% @6 i) Q6 G4 p3 [$ T
end& ~. u2 L, @% h& }, y2 R

7 c) B* _1 {  k! O( {% x* H2 J' A8 w. v; }
1 v$ ]4 X% Z# @! D9 K% \; v$ y
to get-color
. F5 K6 j- Q0 k" q4 i8 K$ E7 O
( j" f3 T* o( v) ^) I0 ?! z8 nset color blue
+ I, M- g# r7 b1 e+ @% B
end+ g; b, p# _  H  \  U0 b) i& @

6 {* a5 I/ G( O/ F7 C0 \' ~+ N( e4 uto poll-class
: e5 z3 A3 D% Yend* _" S% [* C9 O& `

5 o2 x# r: k' E7 ~6 N0 kto setup-plot1$ ]" b7 t+ C3 \. [

" m- p6 G- L* j& |; }set-current-plot "Trends-of-Local-reputation"

& G* ?9 d7 X' ^5 U2 [$ P
% d4 T$ S* D( l+ B$ lset-plot-x-range 0 xmax
7 E8 {, ^' X' K) g$ y
1 R5 S6 H3 w) j' v' D
set-plot-y-range 0.0 ymax
9 Y, P3 S+ ?# k7 s
end
  d$ ?! \* p( ?$ ^  {
. W' b7 Y8 g% h5 lto setup-plot27 u3 A% B: r* R( v3 @' G7 ~7 ?, f

6 \( H9 E  o. f9 y9 v+ Mset-current-plot "Trends-of-global-reputation"
) h. w8 I4 P& d) k! ?
0 ?0 A- m7 A* G6 s  d* H9 B- {
set-plot-x-range 0 xmax

. H; V" C* |6 r+ o/ @3 _7 ~; F6 \, k" {8 h) n8 D, _3 {- i1 B' O
set-plot-y-range 0.0 ymax
- c  l% A) ?5 M; X6 D3 W) C7 ^0 I
end
- o- ~  d" e* x# a
  w7 v6 c$ O4 d- g. G1 s1 f# Tto setup-plot3& ?4 [# x0 V2 @: c- }+ H4 m

0 L: c! Y# `- E9 |4 o% kset-current-plot "Trends-of-credibility"
6 P* D9 z! p7 `) x+ N" v
9 w, F/ ^: x0 S" }
set-plot-x-range 0 xmax

7 I( ?9 t1 m7 ], u9 b" E" y1 G  s; N+ y& ]
set-plot-y-range 0.0 ymax
+ \3 K+ K/ }8 M2 i0 }
end
7 l/ l; ]( Z+ b- w7 {/ A
6 w( U" `! a5 x. l2 hto do-plots6 ?2 S/ `/ b2 I! a8 D; o
set-current-plot "Trends-of-Local-reputation"
5 P' }3 z5 w' X. D/ x$ yset-current-plot-pen "Honest service"
) D# s" h) F$ |$ p9 H+ y1 Hend" ^1 w$ h1 _: R6 x

  j* E$ D( S9 G( 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.
$ q+ i- N" c' a/ {
) r3 A& K) p2 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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