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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
8 G$ r( r( \3 T: Z- A7 yto do-business
4 O: q3 ^1 ?$ Y8 c  L5 u3 ^ rt random 360; s+ Z$ A) y1 w0 e- y
fd 1/ j  I. h. Z" }, [9 @; [. I
ifelse(other turtles-here != nobody)[
4 g5 W& B1 T  Z4 H- [   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.- s. B: Q7 G0 V/ d* b" u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; J, R- k6 w, l$ M( R' R
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, P8 B- \+ p& `& \) n( T/ v! y3 g   set [trade-record-one-len] of self length [trade-record-one] of self  g1 t  c0 d8 o; U
   set trade-record-current( list (timer) (random money-upper-limit))- ]+ ^5 J/ m* J

) S# H, A& R% {/ l& c( s! u# w问题的提示如下:: [& E( s/ k. U5 E0 s& z1 }
  E+ h, S3 l1 }- f
error while turtle 50 running OF in procedure DO-BUSINESS
6 M) a0 w4 E: {7 n2 c  called by procedure GO* K% f$ g# ?( v. u" f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- T+ L4 s) f4 w9 k
(halted running of go)
9 M6 ?' H% a' L. J1 {) Z7 N0 g" j+ O; S' h$ V$ A" b' h
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~~
) ?1 Q" T+ f" 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5 R0 t3 K; V  O4 X
globals[% V1 _# m+ a  @
xmax
# i. H- S1 D: |; C$ z% Q4 B8 @ymax
* B* T$ }3 @. gglobal-reputation-list7 T1 T& d  T( E- T3 J* P

$ ?; ^2 @; F8 N" {) k0 Y;;
每一个turtle的全局声誉都存在此LIST
3 Q7 U3 f: ]/ ]6 `+ P  a: j. \credibility-list
# L9 {' h! s5 ^1 \;;
每一个turtle的评价可信度& M% O  S: [  i' u
honest-service
. d& w$ Y0 l1 m7 f- u5 {. X" [unhonest-service
4 V2 t5 c8 l7 T. @oscillation
4 R- z9 k7 C/ D+ G; `rand-dynamic" B  B8 b* R, x1 y! V/ S5 e. k
]
- c3 L, h4 C6 h
0 r1 _8 s$ ]5 R" q" [; [9 Yturtles-own[
; _0 w3 U0 l5 ftrade-record-all
1 g: W& X% ^# y;;a list of lists,
trade-record-one组成9 O8 t4 q5 k& w" N( d2 ^( G6 K
trade-record-one% G! P; |. P0 n! R$ A
;;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 R9 N, I9 s3 X6 p
9 U5 g% w& O# M% ~- ~2 m( Y4 U;;[
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]]6 R- f) e2 J1 T
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]
5 Z& d: A. v2 ^! k% b8 A# x# s, n$ ocredibility-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list6 v, `, e+ {0 G  H
neighbor-total
% L3 D# j5 N" T1 o! \;;
记录该turtle的邻居节点的数目
1 p* [1 X3 U: O1 i: v- Utrade-time
1 l! c' r3 ~8 s* i2 j+ O! y;;
当前发生交易的turtle的交易时间
. d, h' V( b' ~! J% Q+ \2 _1 Uappraise-give
/ e- M, T: l6 k! N" X0 _' G;;
当前发生交易时给出的评价
8 `! a$ K" \+ o! |. i$ K8 E0 iappraise-receive* o* Y! e+ O- O) Y3 a! c: x
;;
当前发生交易时收到的评价
; }  ?* n$ r5 E% ^( t# vappraise-time" r# L9 n' ?. T" f3 h% r4 }
;;
当前发生交易时的评价时间
) ]! o4 U) x+ T  [- y) Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 |/ K  |: k5 M8 v- ctrade-times-total
8 N+ ?9 I7 K; d& ~; T" \;;
与当前turtle的交易总次数# n" T" Q& [9 b5 Z: I4 _, t
trade-money-total; ~0 c( p0 A& z" y% b$ @1 a3 t
;;
与当前turtle的交易总金额
% D" u! a5 R$ G8 Llocal-reputation! R7 g5 e8 [! [8 E4 m
global-reputation
2 \% t' O/ C' [, f; pcredibility
: z% V% M, n$ T/ t' _( ?;;
评价可信度,每次交易后都需要更新
' O% D. Y% V, v3 A7 K' \5 mcredibility-all( `: {6 `6 v' Y  T5 v+ l. L' ~& i3 |
;;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
0 O# U0 T+ i# J1 A# a2 y2 C7 v; t
+ X' \( N$ {: S5 C; {;;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
1 Z. y+ |$ A# b& zcredibility-one7 ]2 m( _. x6 @) g/ h" Y2 Q+ T1 I+ r1 C0 N
;;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
/ b+ M& N6 K# p; v0 bglobal-proportion
0 F: H# F9 k: Ucustomer
! q0 [$ O' @# _0 icustomer-no; I# M0 T- L, u3 d
trust-ok
- Y1 ^1 a: J- p# U, V) P2 ttrade-record-one-len;;trade-record-one的长度$ F$ x0 Y- R" C3 M7 q6 @$ X' q( `
]
- W# R* |; b  N( y6 w/ M) @) {+ a1 A4 K2 Q  [+ s, W6 E
;;setup procedure
0 Q. i. A& v1 \3 p5 D: y% T
9 R2 R+ `% }6 `1 r. Q% d- Oto setup* X8 l0 E% z& c; I% U

# K8 v" s9 Z9 I0 z4 F# ~+ g. uca
3 l0 ?" P" j, j6 |- G
# P2 N) X7 T! R. \" G
initialize-settings
& q+ g) E: o7 N

6 p" Z: Q1 x  q% r4 Gcrt people [setup-turtles]
' _* F5 L* v( ~8 ^& a
. l% v+ A2 ?  p( a
reset-timer
; F# b/ j: |" }8 r9 X/ G8 |
' E* h6 h9 c9 u- W8 O( L
poll-class

# Z7 a6 r8 P1 Z
- ?: F/ {) r) I0 g- ^2 }! ~setup-plots
, i: {! B6 Y/ M; g6 H$ w1 \
2 k6 H. K& {2 \& n* f5 m) {
do-plots

5 Z2 k1 G8 x1 a& Xend
5 o! _+ j! \" m( r0 u7 _& K7 V( G% M* O! k' s. b
to initialize-settings2 ~* \. F! d; [

4 v5 j# [' z' @$ e8 N0 jset global-reputation-list []
' z* w# J. }/ x  T

, f& A6 O5 |1 w+ r/ M7 [- n- Tset credibility-list n-values people [0.5]

2 y2 A/ j8 i( a; J& L, n8 o, y. t3 g; R1 |* a4 X
set honest-service 0
! t* L7 r5 E+ G

2 B7 t. t3 @( ]5 \- c) Qset unhonest-service 0

, I' N: w* I+ a/ W- N5 s! Z6 q( L: b
set oscillation 0
, l9 a. x# e( S3 r# E
' D2 a& G( ^2 Z5 D) L1 C
set rand-dynamic 0

; h; A% Z( }/ D6 R" Fend7 t# _7 _, ^" ], n) [  s# ?

1 O" D9 `+ `" d' k' W0 p2 Y9 |9 Gto setup-turtles + b1 H/ z9 R6 d4 p  Y6 g
set shape "person"
3 U9 d. s7 \# p: fsetxy random-xcor random-ycor
0 E  h* `" n5 `- Y( \& Zset trade-record-one []
  e) o: {& G+ [( O9 a& I
4 W: N+ }% O# Y
set trade-record-all n-values people [(list (? + 1) 0 0)]
! ]5 N5 Z1 o4 D9 c3 f% z

8 E- n6 @7 k7 V1 Y% o+ i. K2 aset trade-record-current []* R5 e0 s$ O6 @" \
set credibility-receive []
/ _+ h4 R3 Y: L. @  e; y2 Xset local-reputation 0.5; ~9 S  l! P6 D# C. ~- f0 n* ?
set neighbor-total 06 j. }$ G3 H7 W1 Z0 X3 u
set trade-times-total 0; U" l" |$ G' \* }2 x
set trade-money-total 0: }! |: G9 D9 m& j/ D" I+ G& u, X
set customer nobody
5 r+ V+ |$ u$ B1 J0 h7 R: Yset credibility-all n-values people [creat-credibility]
5 d2 c9 b9 v+ L7 N4 V, E0 Pset credibility n-values people [-1]' G& e  q# Y; {/ q2 L* J) b
get-color
8 @& i& o* k! e8 t7 w8 m
  i' t: c1 |5 {5 W# _! }
end( o' F% i( e' I9 c3 \0 o3 l
; V; T: d! ^( s- C# W
to-report creat-credibility
; f. ?) k* X  [  Treport n-values people [0.5]
6 p2 y) t( [6 k2 e% ^end
2 v, L+ W5 N  [$ A
2 t; Y4 i0 I  N2 Yto setup-plots
( x1 o$ W/ \# C0 I: F3 j5 F+ @1 }6 o& T
set xmax 30

0 @4 b: e1 |7 ?: @$ ?  r# A4 g
- w8 l* c4 B- S& b2 T$ T7 [set ymax 1.0

5 W+ `8 m7 E, q3 u7 t9 i* ~
$ m5 Y: E8 v; x! }: ~2 u* uclear-all-plots

& b3 M4 R& C/ |! `" ?+ N$ Z3 _2 [9 ~0 {# I( ]
setup-plot1
3 o0 G8 _) v1 a( ~, k/ }0 J- u- v2 Y
# N& G* h: k3 a. ~/ B
setup-plot2

/ X0 T6 }7 Q( Q& J+ R; l, J+ _* u; I8 {5 @) C- c4 e! U: S
setup-plot3

) Q* m! E& \9 {( K( `6 jend
: |" Z3 l4 i7 u  J9 {' S+ f% P7 ]7 Q, r6 Z2 Q5 q" ]0 {
;;run time procedures
+ E6 \+ C  X, y+ O
9 Z; O+ B- j" y: D% Uto go( v4 x+ f  M0 C( u
! T0 p' `% F5 |  g4 `2 G. U) o  Q
ask turtles [do-business]

6 U3 m% }9 [/ K# o* h1 `, Eend- H9 G( A! u5 g/ b  r8 x
, `+ I+ J! Y% F) Y7 D% [2 r4 U) o' r
to do-business
8 t' K/ W- w. N; [

" Y: e# Z& ]" }* T5 i5 O/ ]- d  `& K9 Q' y5 V, V$ K
rt random 360
( k: N( F7 h6 j! l7 _% I

3 y( p# F2 b% vfd 1

9 Z4 Z6 D' C9 W7 n9 R- H) q! z+ ?3 A( z* M0 Z; x
ifelse(other turtles-here != nobody)[

4 O0 B$ N3 {* I0 B
3 p6 T5 V/ Q+ u# b; M7 Z, G) ?! Q  Q& Sset customer one-of other turtles-here

4 R  K- e% h9 ^9 i! s
$ [0 o# P$ p9 d' C3 v4 |% m! J% Z;; set [customer] of customer myself
: t4 G  ^5 p- C

$ `4 g2 |/ h1 W: l4 Nset [trade-record-one] of self item (([who] of customer) - 1)
, u) q9 H- h" ]( X5 e9 v! g. ?[trade-record-all]of self
; K; \  p, Q7 {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ r0 s# x* z9 m+ X- n9 x

8 g2 S. D2 m: ?1 e  M3 c/ Rset [trade-record-one] of customer item (([who] of self) - 1)
( _4 o7 D1 V  @$ t7 t[trade-record-all]of customer
/ G( F' Y! q1 r+ c
6 f0 P4 S/ G0 Z( g5 @
set [trade-record-one-len] of self length [trade-record-one] of self

' \" @; w' y& [& P2 H) m9 j
. F! @3 u* ~4 y! f5 r4 Eset trade-record-current( list (timer) (random money-upper-limit))

' U% d- c2 W1 i- j4 ?' |6 L- s3 \* O2 N1 l0 z% U% i& H8 j
ask self [do-trust]
9 ~0 [# Q0 f6 {6 [;;
先求ij的信任度
! O. W+ }) R* R1 R* \
! i8 y( E* n% U6 S6 M; oif ([trust-ok] of self)+ a- T, i& l0 w/ `5 _( x0 |9 ]
;;
根据ij的信任度来决定是否与j进行交易[3 q* P; B1 ]3 A' S
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: i0 M- O% k, M$ l0 ?3 ^7 V. C9 J. s$ C( T
[
5 h+ f) Z: @% S: N$ H; n

, L( V& q' R% O5 @do-trade
' K$ j5 T3 S7 D- I) h" y+ }5 E$ I/ [

! ]0 n2 g8 F9 ~. K1 k+ ^! Nupdate-credibility-ijl
7 Q5 m! U3 J4 X* [( j9 v+ ~

- F, h' `! F- {( [update-credibility-list4 F: g+ Q0 w  a3 |5 s9 Q2 J! P& p6 @0 t
) U% r  m+ L6 |+ B- L  }- e9 u2 o

$ v& T  L# W. B& K" Xupdate-global-reputation-list

) @4 F# m& r2 S: W3 ^6 _. x6 \( ?
7 ~; k! H  W7 j* Qpoll-class
$ ~/ \6 X. H+ u# C
0 D: [3 C5 j7 Y/ j6 g' ]
get-color
- p4 _! c# ], `  f7 f! \
  y8 p, u2 |, T1 L2 I$ F" }* g
]]: o, K5 P6 d. L% w. j4 p% O$ \. Z

0 B3 s$ g: Q. r! N;;
如果所得的信任度满足条件,则进行交易
4 V) Z9 q/ `4 a) K' [
* g2 L6 h1 e4 U1 N[
8 h/ p; e, W$ G2 d5 U  b, f: k
; j. M8 d5 A& k6 g1 u
rt random 360

1 ^# q$ G2 I4 p0 U9 y- ?/ a7 |- x
0 n' g+ ?7 y# u: [fd 1
; U9 L& a+ ]! Z% s& S( i  i
& r9 f' n" {$ [+ d$ t
]

( L9 b# V# l1 b/ D$ k" z% B
# S, j, l4 F* x9 c1 t3 @end

# U! ]  L' a! L5 c0 x9 w/ i/ P6 ^
3 ]9 R! u$ m1 D5 _9 B; M+ eto do-trust
# u! y4 u: b( S$ |set trust-ok False
& t5 t. `( e1 E$ G5 q* B1 D0 p0 G6 L/ ]* ?+ L9 K1 e" R

9 e, {$ e! W7 Y# b9 @2 x/ \- flet max-trade-times 0* ^, Y; q( p; [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 h4 K! {5 _; J* Y
let max-trade-money 0
2 I& t. m8 d' O  Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 _, y7 i+ w  ?" klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% m9 j: \6 a! B# V' {5 S% \5 k5 y! B- O  E
5 s' T* L/ ]0 T+ J$ b
get-global-proportion2 K: @" s' g, b) p
let trust-value) @8 M  [" B! }6 L
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)
" f1 l2 S% `! z9 t3 H  g
if(trust-value > trade-trust-value)9 ^% S( u: w0 k3 {$ g- `
[set trust-ok true]5 t& T7 D7 S9 I9 i: Z
end
& P* o! q4 `7 h  I3 d2 g
+ @# k# [* B, @to get-global-proportion* \3 s( ?* s) s* ^7 y1 V* c
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- T9 Z# Z0 ]% l2 B: \[set global-proportion 0]$ d( A2 p5 V; r( N  s4 `- ]
[let i 0
4 G& R: T/ r- l! Rlet sum-money 0
0 ^( j- C* L9 T- O3 Nwhile[ i < people]
. K) D( G5 c  l  r0 L2 H[, I& K! M% i" l) v
if( length (item i8 K' g* J1 M2 }5 q! t; i& o
[trade-record-all] of customer) > 3 )

0 M3 _+ v2 w6 b7 ?: b[
9 G- ?* ?$ Z( N3 G" iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))- H6 i. L9 V5 ~5 U
]$ H% u4 [$ G% a
]# h# z# C8 y, R0 U( U  i
let j 0. j" Q1 H& S6 S" h- M3 G. b1 j$ F
let note 0  B( {* @+ w5 e3 O
while[ j < people]2 I/ G) |0 e! x1 d, ?1 Y
[! I, ?1 Z5 P$ ^9 c0 c
if( length (item i
/ l. G; s9 u! O3 [[trade-record-all] of customer) > 3 )
/ }! I+ C/ r# H' v" _
[) b. x  d$ c% h1 a- F6 E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 i2 U  \8 z; w& s+ S: q" N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* R% J0 l8 Z% _/ F2 B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 ^% n; U" k/ ~! y
]/ ]; o  A4 h0 J) H+ y$ l7 \
]
0 @5 a/ y& M% c- S4 f" L$ I3 ]2 zset global-proportion note
6 P/ X+ ], D, ^9 M% c; e% J6 l]
4 k5 X4 W- P  mend
, ~5 i4 ^- D# y
# v; a( n+ V. H9 Hto do-trade% \; f: v# ~7 v+ F  r5 H, a
;;
这个过程实际上是给双方作出评价的过程) K1 C1 a/ D! d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  Z$ c; Z. \7 C3 ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* ?- }- E5 }# E! f6 [set trade-record-current lput(timer) trade-record-current' j9 D  A, v/ y+ I% \; k# i
;;
评价时间1 A' }% ?( u+ z# |
ask myself [
* E& J. P) P8 b" O3 c. s3 ~update-local-reputation$ _0 Z$ k3 W+ t
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 Q7 d4 N9 a( {2 c" b7 P8 }: []
1 U' f, ]4 q/ H* a; ?0 D# N3 y) v. Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 D/ _3 p: a' b% s. N* M
;;
将此次交易的记录加入到trade-record-one( V4 H4 _- D) F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# L/ m% h, `% G% ^4 g( Z3 h
let note (item 2 trade-record-current )
0 I1 S, S# Y( O' R4 E7 |set trade-record-current' E2 c5 a( Q; B1 t6 c6 e' R
(replace-item 2 trade-record-current (item 3 trade-record-current))
) r/ v8 P1 F- ^/ K- Z
set trade-record-current
! Y2 b) S/ X% {# l" A2 ~0 W(replace-item 3 trade-record-current note)1 S8 O6 }" X; e8 A. ~6 B
+ S9 O' x; R7 m8 F2 l. a! P
, J( p! A; H  ]0 G
ask customer [( Z+ Z9 M* b6 r8 {, K7 \2 T
update-local-reputation( _, ], r8 [9 N: e# C4 u  \3 k
set trade-record-current
3 J$ s3 Z' t# A6 A, H3 y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" D, X/ r: N7 H. K' k% Z) f]
  T! b: [. t6 R+ i4 K" P9 l
  n* \4 I: u! S' N+ Z
+ n' C: q/ p  ~/ ~3 G# ?. Z6 Y! a' c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 ?3 A) Y8 y- f. e1 I; ?3 `
) c1 P" ~2 L, S) f( @* y. t% B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' P, b; g5 F6 E. K+ P& o# A+ i! ?' P
;;
将此次交易的记录加入到customertrade-record-all  `) y8 [6 k. o! X
end
  `) t! Z6 p: ^: u' u! a. a) J# _& B% E2 @' e0 [
to update-local-reputation  u; P4 M, P+ i& n0 O; [9 y6 M3 W
set [trade-record-one-len] of myself length [trade-record-one] of myself; E( \# W- k4 J; Y2 @
) w( F! i5 e. i* h1 f8 k* B

7 `+ \  t9 j6 v& B! [; @. H;;if [trade-record-one-len] of myself > 3

  X# Y  }: B; P5 J" p( hupdate-neighbor-total, D! ^- [' z  J5 v, e* }4 i
;;
更新邻居节点的数目,在此进行" b- U1 B" v+ h2 T
let i 3. m2 y3 ]$ t! f# v" b! P# r
let sum-time 07 P$ [$ T- h0 y. f0 F
while[i < [trade-record-one-len] of myself], Y% V  X9 f. p- ?6 W# E& s
[3 Q' Q  E+ m0 _2 F) o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; R- A- |1 U! T6 aset i+ _4 Q! S% u  r: G
( i + 1)

# I9 J& g9 L" H9 L8 h]
. [+ P5 y% u: w0 Jlet j 3; G: o# [4 A" M% k+ q1 G* Y- I
let sum-money 0# o7 D, i' l) N/ D3 f7 I
while[j < [trade-record-one-len] of myself]
' t' Z) W' E$ w8 {3 x1 V6 h[0 `6 p# v' i; w" I
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)
* O: j  Z4 |6 iset j! W" ~7 c$ {5 `# l3 U; ]
( j + 1)
" s' R+ n6 N2 Z, C
]1 ~" v# e9 k1 e4 v$ L8 O: G
let k 3
4 d9 ?8 [; u+ V: ?8 @let power 0
8 A, o! E4 Q: Xlet local 0
9 C( X3 n  W& cwhile [k <[trade-record-one-len] of myself]
5 j0 d. A3 k2 x[4 @( n$ c: _! t) u
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) 4 |6 S# U, K- t6 Z) p
set k (k + 1)
: K: ^: n4 x9 `+ Q]* Z* O' W7 S' y, N8 l
set [local-reputation] of myself (local)  ?" b/ R8 i. ?; c! U! ?6 ~! W. K4 B
end8 H8 _6 ?2 k/ R9 u( E2 y# t

7 ]% G1 P1 i6 w: Ito update-neighbor-total
  q9 ?# E3 ]$ ~& V7 }4 g9 _6 f/ A' F% W; @3 O; c
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 x, [( ~/ V1 ~
: s5 z, t2 ]- M4 H  Z" O  ~% t

' o$ S4 Z3 S! D5 @end
7 _7 V2 J2 t0 o3 Y. \# i
2 N# E* F$ d' p3 Z8 k$ `. [to update-credibility-ijl
+ n9 ~+ @* o- A& K. J" g; M% O) l( k- w) Z7 ?; c; d
;;
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。% ]" j8 k5 L! ^
let l 0
1 i* t+ J) O( z* f! c8 {6 uwhile[ l < people ]
( @9 ?' t$ M0 D! j" y, z; u3 l3 t;;
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
' i1 C, v& {) a7 T[  R# j5 |" R* {
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% v5 v  S" U( F4 p  X
if (trade-record-one-j-l-len > 3)
1 L6 |  P* j0 T6 |5 v[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one. ?) Y) y* B9 X+ f
let i 3- H2 Y% c( d+ q+ @
let sum-time 0
' P0 W1 \* i$ Iwhile[i < trade-record-one-len]& ^- g% N7 F' s) m9 o6 }) `
[
( i1 @5 K* Q+ Q0 s! Z) zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% x" z7 Y1 |- C7 G6 o# m
set i
; q5 M. D0 H/ i! v! E( {/ m( i + 1)

+ q; ?5 L# N  {, n]
4 ?  q7 m7 B  L$ E3 }9 E! Glet credibility-i-j-l 0' v: X5 z4 S. e/ _
;;i
评价(jjl的评价), |. A) d# W# F* _0 S: n" e% P& ]
let j 3
1 K5 d+ h1 r5 o# j. llet k 41 t# _( x/ w( ~5 `# w+ |# t% \7 a4 S
while[j < trade-record-one-len]* u- n9 c2 S% {+ h4 E
[5 l! ~3 f2 K0 n) C" P
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% F/ @7 K# V& L( a( ]
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)2 x9 {3 u4 L9 Z) S3 B% S# T
set j5 H! c! z" ?+ _
( j + 1)

( X' M. p5 T- g]+ `1 \5 o' U+ ^7 O9 A& M6 ?
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 ))
/ _' R$ b9 E( E! R4 T: @7 A/ G! {2 `6 x; M" v( B" A+ c
$ H& W, Q8 t0 [( L3 A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' X9 D6 k! ]4 j/ Z0 k
;;
及时更新il的评价质量的评价
, S& i# P# U; p+ tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; ^9 ?; ?' w5 K: n6 b, A
set l (l + 1)
$ i7 j6 J/ d; o, V( ?) T]% G9 N8 n7 r' T5 Q6 |
end6 i* J8 V3 w4 O: e! \

8 r/ C( ^- J  ]8 X/ Uto update-credibility-list; J& M5 R( N/ @/ M$ a
let i 0
7 X0 s. i9 N7 l% {* W/ t+ c7 {while[i < people]
+ U4 z4 g* r5 y[
: v  d  P/ R: f) W& Ilet j 0; \. q6 h1 F" i: @8 \
let note 0/ |* C* M0 c5 g- t2 ^
let k 0. l7 a5 y2 \* ]0 A8 K
;;
计作出过评价的邻居节点的数目
9 M, Q: C2 T8 J4 ]9 J/ Uwhile[j < people]
) o! Y6 T. A3 M0 C  c  ^! A& |[, C  e, J3 Q$ |
if (item j( [credibility] of turtle (i + 1)) != -1)
! d4 ^) p8 Q6 l3 T7 D" o: m3 r;;
判断是否给本turtle的评价质量做出过评价的节点5 x# [# q- U3 {& w
[set note (note + item j ([credibility]of turtle (i + 1)))
8 Z& K" ~: H, s4 O& Q;;*(exp (-(people - 2)))/(people - 2))]
- x1 A1 O! N' K5 Y& A
set k (k + 1); o4 K" k* [# {  o% S8 m& P
]7 B* d& e7 U8 O8 z" B4 t0 i9 s6 r
set j (j + 1)
/ o' w6 z  f5 q3 {- f' y# z/ }* [6 ?]
; j! [+ D, r0 \set note (note *(exp (- (1 / k)))/ k)! }2 y, o2 Z% d3 Q
set credibility-list (replace-item i credibility-list note)4 [& U9 S" q9 r8 W3 w& J
set i (i + 1)
0 N; c; ~# w; F6 j5 D]6 ]: @! A' k5 P  D" Z/ K
end( Z* l) z8 X# l$ f2 e

. b; k* n: k! ^$ q# \, V2 E1 tto update-global-reputation-list6 l! `/ c8 p- @2 D
let j 0
  j) }! P, C& ~5 O% Lwhile[j < people]
$ O( c2 N$ C3 _3 ^& L; E[
6 D. Y! O  q* `; p( u0 ~let new 0( O- N+ ~" n# H+ w9 l
;;
暂存新的一个全局声誉
/ g& K1 @! ]. B1 D6 q/ {5 L2 A! E: [let i 0
# E' v% k2 V: U5 Q# glet sum-money 07 l3 G+ J7 U0 q; K6 X: O: r1 W4 G
let credibility-money 0
% ]$ s5 m7 o& f6 ^/ fwhile [i < people]- d6 X* g  k2 W+ u& Y; x  C# ?4 H
[  m3 m( _6 Y* T0 S  O8 ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 t; y+ U, e/ C1 r8 X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 H# _4 i- M- m
set i (i + 1)
' |3 I  f" r- b; N1 T/ I]7 ?/ H8 @7 Z, _% f1 U
let k 0
- T0 B$ _' Q5 |$ X2 r: X( d/ V, dlet new1 0* {) d4 X9 ?% s; v4 |, R! ]! A5 A2 J
while [k < people]" p: m4 e  P9 _( k/ S
[
2 g0 i0 I/ G( R$ E, Jset 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)
; U7 a* n: B7 tset k (k + 1)
7 N& N0 f$ v+ n: d% n# l4 ]]
4 J$ W  W) Q# o3 Aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ @% Q0 M/ \( ?: dset global-reputation-list (replace-item j global-reputation-list new)% P" S# N' }( c0 o* e+ _
set j (j + 1)
9 Y- t9 q% X% w1 i* h6 O]! \8 i, J" V6 B' M+ N8 R
end3 x, A7 P" s5 G. p

( o% s1 ?; r$ }3 o
0 }  r3 Z" L7 O: D  i7 D# z/ ~: R8 \! `: Y! }* a- P- J! n3 n8 J
to get-color
9 W) P6 K; P1 G
: p: D7 x, ^: o+ x# R$ {set color blue

% K; U0 v+ [) b  j% J6 U" h% D$ Uend
7 Q+ t3 t6 H- b0 ~$ L* a
" r' a* `2 a0 R. mto poll-class
4 X+ `2 ?4 {; g" z3 c+ iend( J" `- G' P. A
, j+ S+ T) {& r1 p- o- c3 N; ?
to setup-plot1$ Q8 v) V$ y. o& J% S

. V) V* m" P* x2 E: V) J" rset-current-plot "Trends-of-Local-reputation"

5 @& J3 i- f/ V6 b- \9 p3 ~% u5 c9 ~- H! Q/ W4 Q
set-plot-x-range 0 xmax
  g1 M/ e4 ^6 Q
) t; S3 x2 z7 S0 ]) f1 n. I) A9 Q
set-plot-y-range 0.0 ymax

+ G: _; i' v3 ^2 Xend
$ n0 g% p9 M6 m! Y6 T7 {0 a# f% [% U+ c" v9 K$ S
to setup-plot2
7 `$ Z; w7 H0 _4 `" ^
, H2 A! Y1 q. C- _) Z7 w% Oset-current-plot "Trends-of-global-reputation"

! J  }8 g+ S2 `' c/ B* y. k0 z$ D2 j" g
set-plot-x-range 0 xmax

% S. x2 F' u6 B5 L7 ~! H
# a/ h7 D( B3 Z+ M8 U# C4 G: Zset-plot-y-range 0.0 ymax
/ C  C( r% K$ B3 `+ S5 p: g
end) w/ O6 V# \+ g9 _) A3 g! T0 S5 e

5 K6 w& u7 b% l9 n. l: ?to setup-plot3* T; s$ K; F0 l5 T% ~: q* Q8 a5 M
% m2 [' }/ ?) \6 F* d2 S
set-current-plot "Trends-of-credibility"
/ V! K, e* a) W0 P& ^4 Q

; \3 Q# Q6 M/ r, |5 |0 b' M* i4 `2 iset-plot-x-range 0 xmax
$ y' {$ }( ]- f  r' |/ ?
: M: C& c& r4 D; I* s: X7 W' F$ s
set-plot-y-range 0.0 ymax
' r& C0 W. N; L6 q( `  t
end
! o: }8 R0 E2 K- e# W+ P5 \6 a& u% U% Z3 F
to do-plots/ W% |+ t" ~2 w- m( M1 J8 O
set-current-plot "Trends-of-Local-reputation"$ y% F8 _) h' h9 v
set-current-plot-pen "Honest service". C0 l+ U& R2 m) J$ {
end
/ r9 d2 |1 _9 q* }/ Z6 }/ `& G4 i+ H; ^7 J
[ 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.
- i- @4 B  n$ |7 P0 `) [+ D
0 U# n( P2 J% |, U- ?% V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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