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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:  x: Y; q8 k9 L" j- B
to do-business / O9 q  |+ O- B  J% g
rt random 360. U5 o6 r" }) E: ?  V8 }
fd 1
' a3 F' V- y( Q3 u ifelse(other turtles-here != nobody)[
" S1 r4 U' ^4 ?   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.% P6 O+ C3 K+ B- K+ W7 f0 y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! R+ G/ I+ t, e; n/ D6 _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; E2 B# n/ Q, {& f$ {' L   set [trade-record-one-len] of self length [trade-record-one] of self
* u+ j! l8 N6 U( O  \% g2 R3 y7 t   set trade-record-current( list (timer) (random money-upper-limit))9 D6 z7 K8 W! r& c: N" J7 l/ b
4 S1 C0 L1 Y; s% l
问题的提示如下:
- r+ }" r( ~) b. u4 L" m3 I/ ]5 V
* v% |2 i/ f! I( y$ i4 ^/ H' V6 n, nerror while turtle 50 running OF in procedure DO-BUSINESS9 N% w7 g3 A: `; ~  c& ^- x
  called by procedure GO
% }, A% L& F0 R  wOF expected input to be a turtle agentset or turtle but got NOBODY instead.- E3 W% V9 S# u0 G: s0 s* N
(halted running of go)+ ~$ [8 o: a) S: b. k2 D

4 I& @! |+ [1 l( S& ]9 o9 [( a1 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~~2 }) Z; m$ [4 v4 p) U$ `
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& m1 K* D5 i# [+ W: q7 Z6 L
globals[
$ R7 f- x/ @5 l/ b1 Lxmax
$ P8 f: q2 d: F8 F. t( Aymax4 f8 `) O  _$ L4 A" b3 R
global-reputation-list  @8 p  m0 e3 ^4 N$ O  b( S' p
$ H& y; F  D' d/ U- Y
;;
每一个turtle的全局声誉都存在此LIST1 Z' h9 E3 Z6 _% ]6 B3 b- V
credibility-list
1 i9 |: w) m7 ~2 ?6 O) M0 N2 W8 {;;
每一个turtle的评价可信度9 J+ G3 P. ?9 e7 W) T4 {' N
honest-service
3 s( p- D. q4 |$ z: b4 B6 ounhonest-service
9 g. J  h% ]8 y; q, ]% g+ {oscillation/ z* ]# M  |' E- X" K. U* |0 z
rand-dynamic" G8 A" A! O* r9 [* l) B
]9 l( E* Q5 ]0 h: h5 I& f' K
. A& M9 M" \1 q$ L2 k2 K4 [4 \
turtles-own[
, n5 q" z0 p- f" dtrade-record-all( Z+ z; t% J  b& k# a$ R
;;a list of lists,
trade-record-one组成1 P0 Y% C: _* g5 e
trade-record-one
3 |1 u; K; ]1 T& Y7 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
" C  k7 M& v( [- k% U( |* T0 y. n* }; ~0 z' l
;;[
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]]& p$ A7 E4 ]. `" S' ]
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]
- n/ x5 ~# R$ Dcredibility-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' N- C& ~& b: e5 E: V& f' e
neighbor-total
! Q3 c% }) Q! e9 O* H% ?;;
记录该turtle的邻居节点的数目# U( c/ Y' f9 W. r! Z( B6 M$ W% j
trade-time
1 R! i" H* R! K: \- S, p1 x;;
当前发生交易的turtle的交易时间
( G( c* W8 K9 s, f. H: _2 _3 iappraise-give
. b; t2 F8 n4 X, ~$ z;;
当前发生交易时给出的评价$ f6 W1 C6 _8 M" r- `' N8 [
appraise-receive
9 v0 |1 [, j( g9 y& A;;
当前发生交易时收到的评价; R  P! i' i4 O: E% L+ |
appraise-time
7 d& R. g3 D/ V  z% `/ D;;
当前发生交易时的评价时间5 E) H, G( V; O( V0 p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% ~0 \0 n" Y% T/ }5 m, i
trade-times-total: W  |  R4 P" w& {+ E' D2 F) e. i
;;
与当前turtle的交易总次数/ e* u- f# O1 Z  [0 d( Y  q
trade-money-total
2 b/ B  J' S: ~% ?$ R) F;;
与当前turtle的交易总金额4 X+ N% Y7 S. q  G1 s6 D  W8 L
local-reputation4 J& f3 `* `/ [9 J, q5 R
global-reputation
8 s* C* f+ O" T) J8 \. q2 ^5 g6 y* Wcredibility% S5 t; d0 h# k2 a0 C6 `: {
;;
评价可信度,每次交易后都需要更新) C/ E/ r/ `3 |  q" |
credibility-all
6 u8 Y* @: h* B% i# u5 T7 ^;;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5 }+ X. _! @$ }( v9 F" X- f! \4 S+ ]

5 {% f7 t% r  n1 W( k- R! x* l;;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. J# \5 I8 J. T2 \
credibility-one! a! @- {; z5 m# E
;;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people7 y+ @0 b. a" L
global-proportion2 n" `3 }% Y7 B
customer
* S" b9 U2 \; z( R( jcustomer-no" v# i6 [& A0 x% R1 b
trust-ok+ |& d( K1 C1 D" I5 j0 D; l
trade-record-one-len;;trade-record-one的长度0 i! k) u1 C1 D
]
5 r. {8 A- G& v" m/ }% D, Y7 ]1 b2 x* G. u! n
;;setup procedure
( z- l6 a' k( y7 v& T: y- F' R( L' r5 V, c) x  i& R) c# O  {- E  H
to setup
8 i; t. q& b0 i: I/ R) I1 H. K
5 Y" a& Q, G6 {5 x. A' q2 }+ gca
( P, O% f6 i3 n9 X; t% m

6 O2 F$ y7 ~" g$ i+ D7 v# Dinitialize-settings
: \" v5 D: a2 }2 T. v5 T

7 B1 s4 t* q' j# g7 m1 p! R1 m$ Vcrt people [setup-turtles]
5 Q$ X+ {+ w" @6 P7 [1 Z
/ C1 g$ e' R% }
reset-timer
' m. x) d) ^6 Y
+ V" ~6 j* T( H
poll-class

: u" g7 A7 D) {5 S+ s3 C- m7 }9 n7 E. q+ [, B5 V
setup-plots

8 c6 o  Y7 y) C0 g- P% y* N( j0 P* ^: p  O# p# D4 |
do-plots

& H& ?" V: K1 d; @! aend4 V' ]. q# ?6 n7 Z- Q
! W3 c6 m+ U% _0 U1 p6 P
to initialize-settings
' R' W6 S' \8 |0 d
: n7 o9 @$ W: }, \' E2 uset global-reputation-list []

  I- E* k! }* A' t/ G, K% G' I; }* A- Z2 {3 |
set credibility-list n-values people [0.5]

; @& Y; d' Q! k  t9 R4 h
5 ~; \- m) T  z; X9 s# m' `1 p: e2 [set honest-service 0
7 `7 J3 U- d& H1 Q3 @; _- }' ^% a
( ^4 V2 N" y. E4 G
set unhonest-service 0

; }( e" r2 j; z! q! s
5 N/ _7 f, r9 O4 F% eset oscillation 0
/ S0 C8 Q( ^( R6 E6 M
- _7 J1 W6 g. }+ d- ~1 J+ l0 ~
set rand-dynamic 0
! q1 y) o. F! i+ o+ i
end
+ m/ ~! o/ m) R7 o4 K; U: C
2 d" Q) I" ^% a$ O9 Hto setup-turtles
  j# U3 H1 c9 B8 f7 ]" kset shape "person"
4 |. U9 a( i+ o& n: `, [* `setxy random-xcor random-ycor$ s6 J" {) t* A) _! F" W
set trade-record-one []
: A) J( i. p0 M

4 ?- O7 r6 I. Q' sset trade-record-all n-values people [(list (? + 1) 0 0)]
, n# U& _, q8 |4 Y

7 E! c8 Z$ Z$ u( d3 Cset trade-record-current []
# @: s8 C2 \) tset credibility-receive []
- t! Z: Q# @+ ]! j! Bset local-reputation 0.5- d5 e' H" |4 @0 q# J
set neighbor-total 06 `) q( T, \$ z; y4 Y/ p5 V: M5 d
set trade-times-total 04 c5 H4 Z- p7 \
set trade-money-total 0
, \* Q+ g6 r; c/ q, W) _set customer nobody% z& e( X0 Z; R4 d8 r9 {6 L
set credibility-all n-values people [creat-credibility]
; s+ n; W4 I$ V& [set credibility n-values people [-1]/ G$ v( S% }  R6 X$ V* D$ C
get-color9 A8 L1 o5 q: M2 I4 I* j. c3 b

# ^, F5 s+ v/ l/ ~  Z5 Lend7 q3 i! p' q) _& }7 {! h! f. R
9 ~, S: y9 ?7 S0 d) t7 C8 S
to-report creat-credibility8 r( |- x9 |( t$ r' T/ r
report n-values people [0.5]
0 V- |1 c7 a7 W' j6 vend
0 D5 u! |9 ?* b8 E/ A+ d; B- i
8 z$ b6 e; q- I* f3 \! ^& Xto setup-plots
. I' ^9 n7 P. {4 m$ Y; P/ g+ A2 l, q2 W: I* Z9 x" k+ V7 t
set xmax 30
; I, }/ m! W4 V9 g- B

% t: _- S1 U/ w0 z  @# H. \8 Cset ymax 1.0

( ^/ g* P7 T  u9 ?. `4 Q$ ^9 B1 ^% ~0 t1 ]; p
clear-all-plots

) j& K* X7 t! G0 K- m6 q- o
0 }; R8 e+ o- Q7 i, E: Gsetup-plot1

5 I, N/ P- o0 ?" r1 M0 z& d( Y& s! r9 L7 {; C! k
setup-plot2

5 h1 y9 e3 w7 b. L6 V. z$ m8 b0 a: v4 _! K3 k
setup-plot3

$ B0 v3 D9 {+ a/ v. ?end; Y  g: X& E' q

. {. d; |- x" K9 n) a;;run time procedures
2 P' S9 g8 d! ^0 W" ^# E0 J8 z( H  A9 x( R# D1 }% u' e
to go# |, k" v5 H! H' h6 z; Z

& V1 X" a. Z  T. n" vask turtles [do-business]

/ n% a1 t- [; h1 @1 |8 Gend
% i4 o. g# L" R8 k+ @4 e- u" t" y. O' M; P( f& k7 H3 N  D: h
to do-business , u% S' ^) |' G9 F

; x, ~+ i& O- w& D$ ?9 I
! b2 z3 y" z! k0 r1 y- Ert random 360
5 w* U7 k0 u5 D
$ X7 t3 l4 x6 D- H7 t* m5 a3 |
fd 1

( Q, l6 ]3 Y5 @9 i9 J1 h. `  x9 ^2 O$ L' \5 @0 s
ifelse(other turtles-here != nobody)[
; ~( C4 f) q3 u5 X6 n0 f) \
+ U, s: V+ c5 b. e
set customer one-of other turtles-here
* F, k1 |: N  x1 \9 h6 v; v

- @8 ]- \3 A: Y* s;; set [customer] of customer myself

8 B! u! b) g" C. V$ _( ~! |5 }8 f, Q# D% x# R. Y3 N' A
set [trade-record-one] of self item (([who] of customer) - 1)
& x$ {0 Z6 q* a. ^. z3 ][trade-record-all]of self( d' W; j0 }) Q, ?1 _2 i
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 V2 q6 \9 v! O. u' m2 j7 `, \2 M7 j' q) K
set [trade-record-one] of customer item (([who] of self) - 1)
- `; H, |( G8 u- K3 q' b0 x[trade-record-all]of customer

/ I8 ~8 H  C3 i0 F: Y) x+ G4 Z) k
set [trade-record-one-len] of self length [trade-record-one] of self

7 B. b4 a( C8 Y# `5 _; z6 {, U9 o* k: S' V( r. ~
set trade-record-current( list (timer) (random money-upper-limit))
- _/ I2 O0 s) S! U
* V& H) ~; V7 ^; M5 M
ask self [do-trust]; F! V- m4 q  H* \8 m4 u
;;
先求ij的信任度. a) a2 l' i- G; B1 H& A, |
5 k4 t- u- |$ b/ j( u- P
if ([trust-ok] of self), s* c* |  w8 v, X- T9 w7 o+ Y
;;
根据ij的信任度来决定是否与j进行交易[* N9 g% ?: ?$ L( Z( _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( V; q9 `3 Z5 ?( M4 j4 [& }
/ |- q$ R- _: t2 o[

% B8 ~. u: x9 f3 L! K5 h  D0 I
. h8 H8 j- m& Z+ U" c0 Hdo-trade

. S- {: q. |: [
, ^% J; m* M' \* e8 vupdate-credibility-ijl
9 y  \  ?/ V8 W+ o

9 R% q6 o$ s7 x: J; ]/ Eupdate-credibility-list+ v# P* I7 W2 a. P5 r
3 D) k  h/ y2 @0 i% [& C8 a

6 [" Z$ ^8 S2 D- O: w$ ~9 Lupdate-global-reputation-list

8 W; [4 ^" m; f- a4 A& R( n% G
: N+ j5 r  r) Q* A/ epoll-class
; x! x, E7 _8 d+ b3 ~6 R2 A

! Q( M: S( k6 k: p& U$ ~get-color
' m. h) W( [2 C9 |5 F5 v
# G  K" ]7 m. Q, p
]]( K' |- g5 c7 ^
9 V4 z9 p+ r* [4 s! c) ~4 r
;;
如果所得的信任度满足条件,则进行交易
& T6 [6 I1 R7 Q4 k  M5 y- m7 z- f+ [- P2 q. [* M4 E" I
[

0 b/ L" D. G* d; Y
, S) g8 x' `; v5 \& L, brt random 360

& F! R# V* }+ V3 r: N" P) ]# t* S
fd 1
  d$ d/ S' \$ D& V5 ~$ c
# \: u) A: D2 |' h  g4 a0 \8 ~
]

" e' ]1 S7 ]; p( b. j6 J: B9 z. m- z0 `3 z: H
end
% T) o5 }, a/ c/ o  `8 t' ~

) ?1 f7 m6 a1 U/ q% j/ oto do-trust
0 w8 d- M, b' I7 w7 ^# oset trust-ok False
: _! Y' m* L/ R8 q+ b" Q" @! W
/ Q+ C& K; T  ?4 w1 q7 [" s1 k
$ P( e0 B2 E/ N
let max-trade-times 0" I2 O, P  c- t1 c9 ?1 p
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& a* _7 G) @  N! F1 j2 M
let max-trade-money 0) S* n9 K8 {; P2 Q$ N' n( T1 e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 D) q" @& @& t, }/ H! Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% V) i, z4 Y9 a8 w
: @1 L" ~3 Q- v7 e3 Q7 `

+ e+ ?1 |. p  H  J. }6 kget-global-proportion
( w6 U7 u4 `* w/ Xlet trust-value& J! X% m8 B8 f$ {6 s) }
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)
# R% ?: h& T$ m) ^# {
if(trust-value > trade-trust-value)
0 e. O4 f5 f& v8 L6 G1 Q5 y[set trust-ok true]; r" b. {4 l( m. L+ V6 R
end
; U* ]: S) @0 L  O! Z$ P0 a" h. C+ L) S6 }! b* P
to get-global-proportion
/ B3 D- M3 T7 }) U' I( H- O' zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: T: O7 E/ Z6 \* [: G  X[set global-proportion 0]
: r, ~, _4 }3 r- `6 Y[let i 0/ Z5 n) m' n: f$ w
let sum-money 0
4 J) U! s3 q' ^& ~- Owhile[ i < people]& R9 R: {( w3 a& p% z! j
[
& i2 f# U* F/ m# ^if( length (item i3 G8 @: ~; w- U: D0 d
[trade-record-all] of customer) > 3 )
8 y/ K8 B; X1 O/ j
[4 C, y! D5 Q6 G1 b! M. K
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))1 ^" W, M! M% Z2 y* T* V, ?. Y8 N
]+ t7 J5 F4 J' f. T3 k0 Y# O8 b/ y
]
5 ?' e6 l) Z+ o% t$ h% @let j 05 I+ M+ l& C9 a. o1 u: a' a0 _
let note 08 x* w4 x" f- x' U4 T6 U
while[ j < people]
4 @: t7 e7 N: ^. Z' _" g$ c[
$ B, e  h( E0 @0 @# {% v2 \7 X! Sif( length (item i. {  R! E0 b) I
[trade-record-all] of customer) > 3 )
+ c) R) x3 |/ ?9 Q6 ?) A9 @$ P
[/ f4 K! r* _. |0 B+ X
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. _# X1 ]' C) w* e1 S, Q3 o* I' z' P; Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 Q0 x  j" D0 w[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; Z! H4 n. h( a% u
]
, J9 S, m$ g) `; g( j% W; E! H6 I]
4 v! O* z" e9 {7 m8 q( qset global-proportion note2 [" v* \+ S% h4 M
]
% y/ k( C$ R% e2 P: C' P8 ]7 |end
7 ?" v1 W$ o- ^7 U  ]: w; _/ H" ^1 k7 ~" z  K+ Z. w7 C" @- `
to do-trade( O. X& T' f. `7 X9 _
;;
这个过程实际上是给双方作出评价的过程
, o. }3 R5 L9 q- @% b& i) Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* y4 x0 K* K' H, m6 L/ u0 T# H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 Y9 s0 p: A+ U) E/ D! ]0 @7 @) b" eset trade-record-current lput(timer) trade-record-current
7 o0 v/ o( \' X3 z3 O! ^9 K9 d0 H! x- f;;
评价时间3 B/ V5 R3 O6 A$ x! W: K
ask myself [) r4 ?  N# V3 ], \0 d" b# z
update-local-reputation/ D9 `# ]" C! r  W
set trade-record-current lput([local-reputation] of myself) trade-record-current9 P0 s' ?, l  q9 y" U5 I
]
. E9 U; t+ f! R1 cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: y2 K& q7 a: l;;
将此次交易的记录加入到trade-record-one
9 ~9 u! F3 @! Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 G6 ~/ ]# F6 t) Dlet note (item 2 trade-record-current )
: |, m% E5 _, \set trade-record-current
  F; m% }8 r5 b! G* Y+ F  M4 u- t6 O(replace-item 2 trade-record-current (item 3 trade-record-current))
3 c* c& p* T" }# N% T4 y
set trade-record-current* r3 F3 A1 [4 n1 N+ G3 k/ U  {
(replace-item 3 trade-record-current note)
  H  v3 a+ I, ^& @5 J/ s  N+ c" m3 g8 `

) \: c; A- K9 lask customer [
9 E% X5 @' s& o- ?update-local-reputation# G: O) b  Q% r! M, I. B
set trade-record-current; Y. o! d5 }$ x% X' E( _
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* T( l& _1 u2 W# U" E% S/ R$ R]2 L# T# q0 _# ^) k
# T' {* N% O; v" T9 @1 t" ?

- _& W8 N& A0 k" Z4 }set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  T/ B. M" G1 Q$ C" T2 U, V

/ ^6 ?* I. _" b4 s1 tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) e& e# z0 F/ v/ d/ a, b2 U/ O( d;;
将此次交易的记录加入到customertrade-record-all
- @7 ?/ Z; P5 }end
4 P" N! @3 A, Q4 J4 W3 F: d
9 E# M2 ]- y, J5 h- h* `. Cto update-local-reputation
1 A7 u( b* Z- |: d3 _set [trade-record-one-len] of myself length [trade-record-one] of myself
' h3 n/ Y. D9 c7 N9 f% v
5 G1 T7 W3 M9 x/ h& A: O
  v+ Y) m  Z& ~;;if [trade-record-one-len] of myself > 3

$ o! X5 R3 }: S9 f& bupdate-neighbor-total/ F2 Q, W& [* v& h
;;
更新邻居节点的数目,在此进行
3 y" u0 p% k" Hlet i 3
5 E; f4 C, r( L- S* @let sum-time 0
- }  }% W9 `+ c9 ?- P/ Zwhile[i < [trade-record-one-len] of myself]) V1 ]5 a) J, U7 O* s- r
[* z& W& s% ?/ C( X
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); ~' [6 T: X, N
set i( k1 R. n' k% L3 N
( i + 1)
/ D9 [$ G0 ^5 {! g; A
]
' ~' l. N6 m1 t3 Q+ L& ^let j 30 b* A* \+ V9 w+ x
let sum-money 0
- y; T$ Q8 a8 E3 l4 p7 }# c  {5 D4 pwhile[j < [trade-record-one-len] of myself]
5 L/ Q# d5 a3 F/ Y& s3 L3 `[/ x, l# E" g. F; V. ]
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)7 x5 u& H% T- J
set j4 V1 b; e1 p( F' d5 z/ O  D! x' t+ [$ M
( j + 1)

; x) M+ G0 [8 g: ~]2 h, F$ w0 v  A& E8 [  ]1 |" ?6 A: d% J
let k 3( u4 n/ ^; D% q# n3 M1 h1 t
let power 0
( X+ ]1 e) g+ f7 G# ylet local 0' Y% W4 F, n6 Z
while [k <[trade-record-one-len] of myself]
8 j) I' s# ]" ?- H# N" }0 a[
0 B1 X$ `5 w' N, e" f& C  }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)
' h9 B! b5 D9 a& |, z2 ?$ Oset k (k + 1)% w% }$ z) I/ J6 P( L. k
]# {4 y' l4 z, n5 R8 x
set [local-reputation] of myself (local)$ ~; ?$ d2 f) J" p! a% o; H
end8 f- j9 k( F! z6 w. X
, C7 \( F) [  V( m$ W* ^1 e5 `
to update-neighbor-total9 ?: n1 W& _' B9 C/ G
: [6 H# P& u# ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) j7 j& p, `. c6 x* m; j

1 h' y- g1 V# I, ?) a& z# t" |
% m% ~- q+ U9 @
end
1 s5 Y! \9 d( F. M2 m7 D1 H
! ]  R& h  w! u4 Q5 @% ato update-credibility-ijl
5 h( Z0 u1 ^1 D" `# f$ q  o: R5 B1 O2 k
; n% N. \8 m! O# t1 k* D8 _9 E, s;;
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。
0 j) O* q, k! K; |0 olet l 0* q+ H( Z- ]( n- |
while[ l < people ]
$ s+ {' |5 N7 P9 S# i( W;;
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0 p! z% V3 c; |
[
& n# q$ ]; F& U# q# Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 i& d5 v3 W& Oif (trade-record-one-j-l-len > 3)
' E' k5 y$ a4 g5 O[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
# I9 b4 v2 ]# k2 Dlet i 3" p7 I& }' g, C
let sum-time 05 y3 R6 S6 X5 c; ], B8 o9 C# b
while[i < trade-record-one-len]- y2 I  q. x( b% i) b. _5 B
[7 R- o. X. e" S# M& _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, f! P3 l/ h; Q3 l  z, L4 E9 mset i
5 l5 \* y9 o* G. P, Z/ Q$ \( i + 1)
2 `! c/ v' T* f$ w! g' ^
]
. p' o; z7 Y' K+ }! Q2 n0 k+ ~0 flet credibility-i-j-l 06 q6 L- `" t6 z8 C5 q$ {* i9 V
;;i
评价(jjl的评价)
- d* y% ~" U  T+ N0 w. O9 xlet j 3
" D  C/ ^. Q1 R0 H+ U1 k5 mlet k 4% q/ a. ~* \0 A5 K) R
while[j < trade-record-one-len]2 u# D' W7 @( J6 x- a2 g) f: V
[( f7 i! |) S1 e# L4 A0 b6 Y. k: u
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8 B! ^- C- K$ 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)
3 [2 n* m% ]/ U6 T; U$ \9 ?3 Gset j
% j, ?5 |$ o8 O( e( j + 1)
0 {  ^* d7 b: {8 u7 ~+ N
]
+ {" ]& {1 V6 k6 D* Y+ bset [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 ))
$ S- O9 y3 |  N2 a1 G: o8 M8 ~# `, ?6 g- Z, a! _

7 d+ R2 e* V3 d1 ?+ o% A- O# ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 {' g3 N, ^5 k+ `3 A$ [2 y
;;
及时更新il的评价质量的评价
- J0 J& T& ~2 B2 v, G, }. oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 L7 ~, Y  K- ^: r! W- O( Y8 _
set l (l + 1)6 g" _  T5 L! [1 L
]* {7 }1 x( x" H! A8 C
end" t  e& X! O; H2 u
: M! ?  q2 J* ]- c; @# X; }( [
to update-credibility-list
7 u1 X+ e9 `' V1 T. ^let i 05 ~* S2 P3 f4 Z! p: G+ d3 K
while[i < people]0 ?. `' X7 }: H
[  o" v4 `+ Y5 _; o
let j 0
+ y7 s9 G, ^6 J/ i. rlet note 0
  L; K: _" V( u7 j  l& @; Rlet k 0
7 r( c1 Y$ O. J;;
计作出过评价的邻居节点的数目/ _& @8 }9 G' J8 o6 _) f2 J
while[j < people]" x, r" a; _6 h, Z# {. ~
[# I# s3 f4 b' X# G7 \( W1 K4 b
if (item j( [credibility] of turtle (i + 1)) != -1)  R  _0 ]0 \. J% F  A" ^% |
;;
判断是否给本turtle的评价质量做出过评价的节点1 _9 g  p5 z7 e; L$ Q
[set note (note + item j ([credibility]of turtle (i + 1)))
3 t6 w( b: v2 k1 n;;*(exp (-(people - 2)))/(people - 2))]

, t; N* k- T% [0 |9 bset k (k + 1)  {4 m7 d7 N4 ~3 M
]
- r2 u% v/ J. |. N6 O; hset j (j + 1)
( [6 i8 q1 P6 u# c& m  r6 d+ R% c: L# M]
. G5 _9 Z. C$ t. G" jset note (note *(exp (- (1 / k)))/ k)
: _. X  P& m* r$ A3 I+ fset credibility-list (replace-item i credibility-list note)4 s8 N! q8 ^! ^1 _$ D5 C% m  V
set i (i + 1)" N: S' }  a1 m3 ]! _' q; Y5 S# X
]
; D1 j: M" v1 F& l$ Uend4 I3 c& k& o6 D6 [  m  i

; a1 x% v/ \) E& }( Zto update-global-reputation-list
0 @( v6 a0 x& ~let j 0
" H7 `$ |2 Y1 E& iwhile[j < people]  H' R3 L+ x" h7 k
[
+ b7 E3 r( y+ W% G' b' b5 V% X' Ilet new 07 M, _# _: m0 b! U3 k! w
;;
暂存新的一个全局声誉
2 @9 [5 F' L; l# g& S: {let i 0
" J; W: C4 ]# E; ~let sum-money 0
3 ^9 r$ Z& g/ }1 C* E& i* olet credibility-money 0
4 @4 i9 d& W$ P. Nwhile [i < people]9 z' z3 h- q0 g! w, U% h
[
9 ?: L! f# J. `set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 l5 v. _& T$ C% Y. k+ T! \
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 W6 Z* D9 b" p8 c" o
set i (i + 1)
0 ~/ R7 q, r7 ~  N' q2 i]; L9 y7 @1 c/ ^2 m# S
let k 0
3 Y% ^* V% q9 Qlet new1 04 _) s: ~; ^8 J; U' {+ H
while [k < people]( P$ m% g6 R/ N9 ~* O9 C' A
[
1 B  ~8 v2 _$ @% B' T3 Wset 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)8 p7 O( U% g! }- _3 j1 i5 d9 w
set k (k + 1): n& O' l2 V& y: N& i
]
; I- g% `4 s& q$ d% t' ?8 `set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 J( P2 v& i7 W' T: p9 `, pset global-reputation-list (replace-item j global-reputation-list new)  ]  @$ \* Y1 }) [# N" k* P
set j (j + 1)" m8 |/ Y; q% \* \& t
]3 t$ d3 V- A! A! T+ x3 y0 a3 C! Y
end
0 b) N' B! z8 t
+ c1 H, |5 `1 |/ M8 k2 `
4 ?' P9 n% D8 T& x" v& J0 Q% B! a+ g/ n4 ?5 u% n: q  Z) S% i7 q* f
to get-color
" f% O+ ?3 j/ |, r3 ?" _: ~$ h3 Q1 k- I
set color blue
0 b$ k: N  g( V4 O4 @. v; u3 q
end6 W( q- n6 v. B  D0 }3 G

0 M) K$ I" K2 v$ x* z8 ?to poll-class
8 E: U+ ]# G9 b( t, U; t$ n( ~end
6 l* j' \- ?# b' A6 Y3 u% H* l9 w" G/ r+ W. c
to setup-plot15 H! A3 T9 t* V, P* ^0 c  B$ Q1 I* q

2 o1 r2 ?+ L9 t: vset-current-plot "Trends-of-Local-reputation"

8 i" s7 s  b: x9 \; [+ G: a
- W$ o6 N% _) r! ~! B8 h/ R) jset-plot-x-range 0 xmax
) F% R- }" L6 c5 A. B2 D

2 r1 n- c& \& e7 k* [. Mset-plot-y-range 0.0 ymax

( a8 f+ N6 S% n. K, i4 Cend
- e$ l: j) A% _7 x" v1 a' M" }0 j& x& ^
to setup-plot2
8 G& k2 U7 v+ T" D& w
; G6 u: F9 I4 r3 B! m; n4 A7 R$ ~set-current-plot "Trends-of-global-reputation"

% u$ f( Z; W& X: D
4 j% q$ O! |) S, K# m1 lset-plot-x-range 0 xmax
4 f( ]6 Q8 B. o9 y8 w' ^3 m

' `$ @' M. Q" d2 jset-plot-y-range 0.0 ymax

/ M' @9 i; }+ |end8 o% R+ e( K) E4 ]& X" @) [+ f/ u
/ \9 H, l5 n( O3 B$ M7 I
to setup-plot3
! H6 t1 T) L2 `7 k# A" \! `
7 E9 `5 p2 K' Hset-current-plot "Trends-of-credibility"

. J( ]" R9 L' L; c! f  h5 ]1 S5 F& s! o
set-plot-x-range 0 xmax

. }4 Z# Z" p! z0 q) Q" `! s9 S" O8 |
set-plot-y-range 0.0 ymax

0 N7 F& r, `$ B/ ~end
8 ?, E5 e* F* U; ^% R' x2 i8 D- B: Y0 \4 H
to do-plots
, h4 p5 r7 n; `5 ~0 e3 I, {$ L2 Hset-current-plot "Trends-of-Local-reputation"
  v5 @4 {, Y7 yset-current-plot-pen "Honest service"3 M, @) X; I2 k: ~* T
end( [6 f( ?8 f4 Y) T: F4 ^$ Z

% ~- \% q5 V3 u) I; 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.; m9 X) S# [/ H" ?& {

' V# |0 i+ d- p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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