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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 G4 c: Y3 ~% f; K) B: k
to do-business 8 R- J# `, V( l' ]- [3 ?
rt random 360
, {, W2 {7 L) q' I! [ fd 1
- c  T# b% q& H9 w/ r* y& R ifelse(other turtles-here != nobody)[. y. ~& r7 p' `' r4 h$ i6 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.
  @; K8 z6 P. P: x' e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: d9 T) _. l4 T; `! `   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 I4 j2 V8 i8 i/ Y, k( `2 ]7 g   set [trade-record-one-len] of self length [trade-record-one] of self
9 ]7 V& z: x% _; \7 L! d   set trade-record-current( list (timer) (random money-upper-limit))  m. u/ K; ]7 ?* r, ]& S

' t. a) s8 q& N  h; n问题的提示如下:
5 `+ }' A/ c: ?! G4 d
4 R- R, L* C' W  W, [error while turtle 50 running OF in procedure DO-BUSINESS
, r/ D, y7 R  B3 j) [1 Q8 e  called by procedure GO
6 c* P1 U/ t( P3 {* ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 _% N* z5 m) r4 J; L
(halted running of go)
5 Z; ~$ @1 L$ C" {/ K1 x: ~) _! a/ }* V
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~~
. f! D/ j' i% e% S# C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+ a# T- p* F, |5 t) w
globals[: A" I: {6 D6 {5 S( u
xmax) c6 p2 n& F* U9 z- X$ i) ]) ?
ymax4 u4 l6 C% w9 B0 |7 [1 u% K8 o
global-reputation-list# M( [/ U" T1 h6 Y& G( P" j

5 l" g, ^+ O4 w1 J) a;;
每一个turtle的全局声誉都存在此LIST' I8 d8 V4 C% F, r; N9 E% t- A& m
credibility-list% R+ F# n0 y& [0 Z* y  `
;;
每一个turtle的评价可信度
3 ]- F! ], Z4 B- w( o  Q2 |/ U9 shonest-service. k+ [1 V# o+ k
unhonest-service3 k9 _1 Z$ K( _6 B* p
oscillation
  {. ~& h8 t8 a7 `+ P" Y% Lrand-dynamic
% {2 |5 \' R& h% ^# e6 O]
0 F& L/ u7 V4 ]  D* U; V+ S
' [3 I' L8 z  k" zturtles-own[
6 |9 z5 T2 |/ r& H  {# r) z& }trade-record-all& H3 W, s/ |7 |" Q" e8 Q, C! n
;;a list of lists,
trade-record-one组成
/ w- f! D# \7 ?$ @: jtrade-record-one5 k+ y: b$ Z6 X) J0 g4 N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 N1 ]! x' X/ Q5 |7 ~9 U  e5 `1 ~; E- J
6 B$ S4 s# a7 P/ D7 C;;[
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]]1 q7 T  H; }' C" o
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]9 Y3 s' ~; a6 J+ C$ s
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: ?5 k5 P; O3 i, s3 y0 P& M
neighbor-total% C* d/ g4 l  s
;;
记录该turtle的邻居节点的数目
& Y: u4 K, Y) V  P4 f! strade-time
  b8 x6 W5 A( P* a( ]6 p( Y;;
当前发生交易的turtle的交易时间8 V& l6 l7 H$ ~. m- ?% B$ Q
appraise-give5 g! G( @  s- I$ N
;;
当前发生交易时给出的评价7 X1 N1 m* I6 B# |- v# }$ |
appraise-receive5 ~8 g; C. S* P
;;
当前发生交易时收到的评价; ~  z( d5 s- l: e1 t. J; p
appraise-time
2 N+ G) W5 T- g2 v- {7 F4 C/ g5 \;;
当前发生交易时的评价时间5 g% D) J( B( r* u7 I; G$ b: j! A4 R4 S* A; j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. O$ |" y6 Z6 p) z( W
trade-times-total
0 X% w+ N( g/ }: o3 B/ @( B: \* h- k;;
与当前turtle的交易总次数9 ]+ G/ D6 w$ e7 `
trade-money-total( y" K) L4 M7 }
;;
与当前turtle的交易总金额
& a  G2 P  U/ W- |; flocal-reputation
9 Z, h+ p$ {7 [3 Y8 [global-reputation
- D) M( y- P; T2 |credibility. Z' K1 i% T, Y" Q8 a
;;
评价可信度,每次交易后都需要更新
* I: s+ P2 w. ^# ?& fcredibility-all
4 p) t, h0 m4 e2 q% m3 V$ L7 x& F;;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2 e4 M- D7 W# w1 w- m! |
5 A  ^9 u6 A" ?- Y5 H3 r
;;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
$ y7 c/ Q4 W( B. a; K; E  Zcredibility-one  e6 f5 `8 H$ V. w0 g, u9 s% f
;;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/ h4 ^0 \& ~) V6 {: w
global-proportion) ^* s4 A1 \* ?  Z# L4 a; ?  ]. o8 ^
customer% [* ]1 R5 D/ V1 o+ D5 J1 q8 J& X
customer-no
* Q3 s- h8 S$ t5 `& r4 Etrust-ok
; Y. h9 l- E0 a0 Q: Mtrade-record-one-len;;trade-record-one的长度
; e) C- A3 B5 r9 `% U]0 f4 [- {. H3 u( Q' @& v  P$ u
3 r8 {; l, i" ]8 r+ E3 Y" z& f
;;setup procedure: ~: o' w' Q3 J' k( j6 h
; X$ r+ r( w  v. Y
to setup* ]4 `/ c" X& P# R- i

6 v' e( s3 B8 ]& B( i/ ~5 |! Wca
( c5 U( k' F7 k
2 V+ ^3 V! n( z/ x# u8 t% [
initialize-settings

2 }$ d5 E0 O8 f0 L/ Q2 r$ ^" }
" G' m4 W# A, |; ^. R) e0 I8 Bcrt people [setup-turtles]

* V$ M; P0 q0 d. p2 L* A3 ?) [0 _1 K2 e) ^3 y
reset-timer
9 A. W$ f4 G/ R& z' X# [
" {) m& L- j' H
poll-class

3 \+ o+ ~( ], T, \: t: `
1 G6 S! c; ]9 osetup-plots

: [  q, U/ l' A7 N( ^
9 l0 ?2 j3 g/ S2 f) e# gdo-plots

$ @( f+ j8 S( w; X5 @4 ]end" a8 D+ x  }. S, d& {* U( ?5 |
5 y5 c0 b, V$ E/ l) v
to initialize-settings" R5 |7 `! W) p: q( C
8 h* M% w* ?" y2 f' q, h$ r
set global-reputation-list []

  a5 b3 h, I7 j7 z4 }1 j' B+ n3 A
& ^5 f" k# D3 ?! o. z5 o( r' v0 wset credibility-list n-values people [0.5]

4 {4 e# A1 H5 b. W. }5 j1 f& r+ g5 r- y$ T% M) I9 z
set honest-service 0
, M1 k; s8 l( @0 x1 `8 U# N# W
& q2 a" r% _) D7 Q2 M
set unhonest-service 0

+ y3 i2 {* h* C8 D5 P1 ?6 n7 f  ?
: X; q" N: v7 H' G+ ^set oscillation 0

2 q  y) ^. L) V6 k! @) f  W: _; E: |8 \, \
set rand-dynamic 0

/ }+ r) l9 G( H! ?$ Q) V2 Send
; f6 _& Y$ @, u5 A! t. p9 c( [- Z; b7 ?# S
to setup-turtles
+ p0 W# l& @# K9 Tset shape "person"
. g, X9 r. J9 v! f6 ~5 {; m& ?setxy random-xcor random-ycor
3 A5 Z  o7 I. z8 t# j0 Hset trade-record-one []9 O9 a9 K' {1 T) a# g8 w; n' z
. f7 Y* u& b( G2 F
set trade-record-all n-values people [(list (? + 1) 0 0)] & A/ Y) t# b* c  U& F
0 _  W; m/ A! r" i2 V& {% M7 I  t$ o
set trade-record-current []
9 \* a$ O$ a0 y; Zset credibility-receive []
0 e4 D+ E+ U9 `! `) q1 z' u' bset local-reputation 0.5' x0 H) l/ h% L8 I; P+ k! Y/ K
set neighbor-total 05 }( h1 s4 t! b* B
set trade-times-total 0- y$ A8 {( o, c0 H! a& }0 n
set trade-money-total 08 Z' j7 m( K6 [, M- B
set customer nobody
% {9 I* K# u& h, v0 v: {set credibility-all n-values people [creat-credibility]
' A# U: x* {9 q# yset credibility n-values people [-1]. Q  u* j: ?" f" F& e8 Z: S
get-color
/ p4 Z# o9 ~% X9 i6 e" ~

. b/ b9 @( J3 H9 u; @6 Q1 B( pend+ h! b) ]4 e# o5 a

. C% m! g/ F* D' F9 I9 eto-report creat-credibility: T4 E. z# X( Y' g- d2 Z$ }
report n-values people [0.5]
2 y* Z( r( f! L; `; l  @$ iend9 c/ b, N# z' Q+ D  o& p6 C# y
/ j$ m1 _' ?6 K3 p$ r- z
to setup-plots
& E6 U) [6 F+ K* a. L2 K/ F2 Z: E& o, y. M& p+ N
set xmax 30

* Z2 @! Q' ?% h  S1 Q" j" _  u: K, k
set ymax 1.0

7 P+ `* {# [2 E
* O4 T0 n+ l) r' s$ N/ K. oclear-all-plots
! [% P! S4 f* a; Q% k

" {% l& G/ c; isetup-plot1

. Z" b3 d3 h8 z
1 U/ Q8 |+ L* h" m$ F! F0 q  msetup-plot2

- L3 h4 H9 s7 c! W$ f$ @
4 M+ \: ?- X0 B* k( Wsetup-plot3
& ?- A: |) O: |$ K0 h: Z' d
end# J) z7 e4 c6 N
1 Z% e# u9 Q5 E* B; {# ?8 J8 u
;;run time procedures  J& q: E$ `9 G5 a* O
/ q+ p. Z% v3 p  Z0 v
to go
3 H6 O" Y" K) ^' T  O, S  }2 M5 K8 c6 F+ F5 @! L: c
ask turtles [do-business]
8 P, _) t# q7 E$ }9 i' E6 n# K8 H
end
# x7 w; h" ]) y1 X% Q1 ?# {  |4 F+ R& T4 @6 n6 @
to do-business
" i* N% d, n$ x7 c: ^8 W$ n1 y/ S

: D# Q5 J" w$ l8 j
' |7 t0 k1 G  g; `3 U9 }rt random 360
  a1 v7 Z* M$ r9 k; K7 Z
# r& Z6 l; M; Z
fd 1
2 \; ^: x4 p# h3 W" U; C

7 W  G+ x2 x# I# Lifelse(other turtles-here != nobody)[

2 p# x. v* c9 i1 `& q7 f! r0 W- ~8 I# z* y& U& D9 y/ L2 J
set customer one-of other turtles-here

' h" I, f9 [% `' ~7 H* R
3 L) T; i8 ^3 ~0 p' V  M;; set [customer] of customer myself
6 C8 F* V5 t  I

; n7 ~7 j0 [' J. F4 L$ G6 B* qset [trade-record-one] of self item (([who] of customer) - 1)
7 T4 B+ L" F$ K5 v- j  ?; Y/ J[trade-record-all]of self4 B4 o$ T+ N( ?, R
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& J& @/ {( q; a$ v; t3 O. N

" m0 J7 h" `  m. I# x4 Hset [trade-record-one] of customer item (([who] of self) - 1)% ?  M* d' i7 }, @& R3 d% K$ f  [
[trade-record-all]of customer
% [. a" ?5 f8 G
: H$ f! ^4 i* b
set [trade-record-one-len] of self length [trade-record-one] of self
6 A( p4 K  n/ p/ d9 G6 g0 k

, c. M. s1 r" G4 u/ d7 Pset trade-record-current( list (timer) (random money-upper-limit))

/ C3 T9 C. l( n0 h6 B
7 H1 }% l6 i- _: d! _! _ask self [do-trust]+ y! M! s9 {: E; T. F
;;
先求ij的信任度
" o) v' V1 t1 a% T: w
4 Z% E8 m/ ^4 ~9 K! S+ X3 U' Lif ([trust-ok] of self)- n- G3 m- W, ^
;;
根据ij的信任度来决定是否与j进行交易[
8 p* z7 O: m) C! mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: b, {& ^: _" C, L5 _/ M- x: P
) o3 `. K9 V( y+ t
[

8 \8 _; f1 G; s
3 o4 _1 t( P: K" ^do-trade

) m' D8 E6 g, n; V. S6 U
0 S& J$ t+ L4 gupdate-credibility-ijl
' g5 `! m) D: b$ ]! Z' Z

5 P! x. J1 V. A9 U+ _- Bupdate-credibility-list. m3 `, z& H- Z+ m" V7 S4 c
* [7 f: \3 q/ ~& w5 G) `3 a- g

% Q  W7 v, W/ e$ ?8 V+ D; g1 K8 nupdate-global-reputation-list

# t, |2 y& J, r" j6 W  o
% |# B, D) r9 F1 a4 d7 Spoll-class

4 V7 y! l! p% ?1 P* `; t/ p
* e$ Y' I  h! @% X8 {get-color
. O' H( Z% O4 v; _: ~7 T% q
/ i' K8 t# \0 l9 N5 G
]]
0 L* p; h. ~1 [, u  c. v2 H2 O
1 S9 [: z2 G& G" {4 z# k) q' L;;
如果所得的信任度满足条件,则进行交易* N4 Y: }* o( D3 p

4 d, j  u! m& c' M* q[
8 U# A" X: k/ R
: z: `5 q' y+ j
rt random 360

& h4 l' j! e5 h4 }2 v% I# r$ R. ]/ V+ Y! ~, G5 M& U% R6 W  C
fd 1
9 p* q. Q3 c" [: \" w7 x5 X7 O
* U$ `8 @* H$ y0 {: }0 Y
]
& y) ?" w1 p* G8 A7 K

$ _6 o) Y2 f7 |* |1 }% u. tend

$ |; t0 O  |0 ^1 n8 ^/ h+ z: B5 Z" v: {/ o: e. g
to do-trust 4 H* M6 q6 u) J
set trust-ok False
9 Q7 |7 o. C7 l2 ^( }. }9 f0 }
6 C3 ]0 ~. B: o8 I! \
% F/ ]" M  p7 b! n
let max-trade-times 02 Y$ l! z! y0 y. E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; _( S- I+ F% Y0 C4 T( d% U3 Ulet max-trade-money 00 f1 @, [2 z8 I6 f* J; w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( |$ G, w2 p; L( @/ u; ~( S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" v9 h+ w& y! v# Y' ~. c5 d: O9 _7 c$ [

( G7 B4 p' v6 Z) V5 p' T" {9 mget-global-proportion
% [/ n# |' k6 _+ y: C  k/ j: O- Slet trust-value
  W# G- i( \& vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# {$ Z+ V& N; B( B
if(trust-value > trade-trust-value); d9 E1 B3 B( B: n
[set trust-ok true]: X* f7 t2 j6 _# t/ ]
end- Y9 ]9 R6 r7 I) ^4 d# L- U" N0 x$ A
' L; r# D% n; r
to get-global-proportion
- H" u" N+ y5 Y- a- ~* Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  J% z1 U8 V, ]& X
[set global-proportion 0]0 l5 k8 e  i4 a
[let i 0% k2 D3 q- K( @  y) g
let sum-money 0$ v$ G9 l4 D# k) y. L) e
while[ i < people]
; S- a5 d" d5 A5 E$ ^[2 Z! R1 I' n' C4 |$ u- B
if( length (item i
0 E9 [8 O, ]5 A5 S. S  [( d[trade-record-all] of customer) > 3 )

2 g, R1 O0 d$ n( k[
8 H4 e" N9 G$ _0 `set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 e% \; @$ U* T+ P1 p' b]" ?4 B; U% `9 ^4 ~1 x, y# F; @
], Q9 s$ P! R4 e4 w/ o% k* D  p: g
let j 0
9 ?$ x# S- E( u# |- [7 vlet note 0
" Z/ N0 T' q2 C$ H* q7 H4 P0 g( K  t1 kwhile[ j < people]
# g4 m. }% }6 \2 q, v[: z. X8 ?) B) N# E( `" J/ c0 p
if( length (item i
  z8 }# n3 u7 i! W% R* Q4 x[trade-record-all] of customer) > 3 )
: F# `, g/ E3 n
[1 ?- M$ C1 s, ~5 W# @2 S5 W3 B
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( h* K/ s9 W& k* U3 W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, z! ]( q, ?6 i+ s* v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 U7 z* |8 U( q- M* l  q; i" u7 E]" U- J/ y, a6 F6 Y9 ~/ @
]4 Z! o* y" z2 b& q8 F6 Q
set global-proportion note) t8 f) r; w& T8 ^% Q
]2 ]6 _6 q' w8 X
end' U* `& p% b! ]) _6 x: z9 w" v9 Q$ E
/ k! g3 O! G" q, w! O' l
to do-trade) l0 j( M) C" z
;;
这个过程实际上是给双方作出评价的过程
! @" P6 r  Y5 J: ?/ I; H: fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- |' G! l) B+ Q7 o- J: |1 b( v: Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 _8 G$ Z2 U; {8 a( _  lset trade-record-current lput(timer) trade-record-current. D% W# f6 ^* f$ S; `: ?0 f
;;
评价时间
2 c& j) T4 C' Q. ?3 f6 ]- Kask myself [! [9 {" ?, w6 s7 k5 `6 V
update-local-reputation+ V' V" D8 O( i7 u
set trade-record-current lput([local-reputation] of myself) trade-record-current2 Y: |& F4 K& X8 ~4 l9 ^/ |
]9 `, Q$ u" m! h1 ]  i+ K. O  A
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& [. k% P) r" Z; K' H
;;
将此次交易的记录加入到trade-record-one! h1 T) V0 a, a$ f8 g9 @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 j+ u, O# N4 @0 e6 R4 q
let note (item 2 trade-record-current )0 d! ?3 ]4 A  }& A6 i, i: P  L
set trade-record-current
- U" c& c! P; d; @" N8 u; M(replace-item 2 trade-record-current (item 3 trade-record-current))

. _9 s7 e" w7 _set trade-record-current
5 i! }2 N/ `  V6 j4 z$ p(replace-item 3 trade-record-current note)
1 P" `( Q( R4 Y( P1 y
6 {) T4 s, ^6 `3 n) e

1 N* I2 h' M# K" ^. }: H+ O; Zask customer [
8 n, u) o0 y  M5 ?% l8 F% fupdate-local-reputation; k1 g8 y* r7 W; E4 w) a6 t3 _( T
set trade-record-current
3 s6 t7 y" c4 u0 W2 |- {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 V; \. C6 y! i! @8 o, i1 E]
' b4 n" A) Q! ?5 t# }8 W5 y" x  F/ T& B+ h9 s8 b, R8 E
: a7 y! u- }* v' `) b* V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 ~% \; S1 ?* o8 E2 G9 F

3 `7 S. |0 L( Y3 tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! e, h( p( u6 x$ d
;;
将此次交易的记录加入到customertrade-record-all
% i2 n7 @- B' T$ Z- O7 Dend% J$ [# S# @& M. y
$ `# _- m- W( o: q& ?" A' c1 F
to update-local-reputation3 u0 w, P& ]& G1 s( x$ ^
set [trade-record-one-len] of myself length [trade-record-one] of myself2 y2 [- i) \7 e

9 {$ m, W5 F5 r. [; j& q& {" j1 l" S8 `+ ?7 W0 X' m+ N4 \) y
;;if [trade-record-one-len] of myself > 3
- G$ K% o. P: y8 z# W5 _% n
update-neighbor-total* q) n9 j% `: v' C5 x" Q! K; g, y
;;
更新邻居节点的数目,在此进行2 f6 w7 j' c7 v; U
let i 36 J5 @: i9 s! c8 B9 c3 R
let sum-time 0  v" U* N( S6 ~. y
while[i < [trade-record-one-len] of myself]
. a  J5 Q; r' W0 N7 ^5 z[
, i. C& a: K2 X. Mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. c& l, N* M0 _, w+ uset i! f! P  D2 V/ f: z% R, U( A
( i + 1)
, l/ g$ u2 H$ ~/ v) n9 X
]7 R# Z/ r+ n2 t8 `* P0 S3 J
let j 3
3 H+ P" x  S# k5 N* n9 w' clet sum-money 0. F  T. Z7 L- p) a
while[j < [trade-record-one-len] of myself]
9 T) _2 O- Z% w[- e0 d6 K6 W: k# U
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). ^& n: _7 y1 D6 h3 Y1 z5 P, ]
set j
- D0 ~* p" b7 y' k( j + 1)
5 w2 X0 I0 \* d2 [
]
! [( u  u1 c4 }+ p- T; rlet k 3
) z& n5 h9 I+ C1 hlet power 0& Q6 i8 Q+ ~( U" g' n( B
let local 01 d; i5 t& A0 ?' Y' e; K$ P+ l
while [k <[trade-record-one-len] of myself]: r7 I/ F1 a- C) O! q
[
+ j' t' e8 j0 D9 Oset 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)
( ~3 }. ~9 r0 |set k (k + 1)
1 C5 |# d. m% N) C: [6 C# K) []- |* Q2 H6 _  b& B: D. v) x+ T
set [local-reputation] of myself (local)7 H; v. J" H8 z1 Z+ d5 L
end
+ g( h4 D0 Q9 d! z! }/ I  M: i# }6 o' }; y+ f9 ?; v8 V+ R8 G8 x
to update-neighbor-total& q3 ?- H8 k% ]% w$ F
$ Y7 k" Q5 i6 H; a4 h2 k7 Z0 x+ R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: e' F% \7 I4 O. H5 k' u, e6 H; e- i* n0 V" n

: }5 {$ S$ j2 c4 ]: p6 H9 N5 I  k9 ^! Pend' a: d5 f% F! H5 \

' f8 s+ b* ^( g: k7 o3 ~to update-credibility-ijl & g1 h. B- P* l% {# O8 o

! F* Y! o/ O8 d, b7 t; B;;
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 d$ S# c+ V4 y1 q% n
let l 0
. Z3 o; d  N% d) u  Q0 z/ _while[ l < people ]- K  g+ P+ s' ]
;;
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
; J' ]7 r, G# z# l! {[0 i$ _' W  |# x0 u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( Z: q4 F- e9 k' Iif (trade-record-one-j-l-len > 3)
" P2 j. E$ H; p+ 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' R; j6 K7 E" L4 w9 M( j' r1 ^
let i 3! T" Z9 r8 A+ u2 _5 c& U
let sum-time 0
% m) H; u/ W7 Rwhile[i < trade-record-one-len]
7 J( K# t: y. C! C- c& [, V8 M[, Q% Q% k& E  V) |# y  p& ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" f. K2 B& |, |1 J# J; Uset i, f" u% U" x! z  Z
( i + 1)
7 i% n& m. f0 _" L- j+ m4 q. k
]% ^; X1 G- r* I. \" D* }4 |& Z
let credibility-i-j-l 0
2 {5 e( D6 R- [3 `* w;;i
评价(jjl的评价)
- R5 S$ A' m8 H! z: _3 s$ U2 Flet j 3
! G( F) @4 `; |+ ?6 f6 C% U8 Ulet k 4* R3 B# L! Q% N. b& Q3 M# v2 X
while[j < trade-record-one-len]
8 K9 C1 \% K# ?* ~[
$ I" I6 m5 e8 d+ k9 [9 S! Rwhile [((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6 l6 Y, [! m  {$ z2 P+ S
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)
  x% T5 z- R5 G. U) K- wset j% W  f" J9 \! s7 k4 P1 q
( j + 1)

' ?; I: k" Y4 R. Z& u: []
: |- d# T: }* o; kset [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 ))3 @8 b% r" p9 Y: n- d
5 c+ R( i0 @6 A. ~% L

; V" G$ R# O- }& x$ w; Q( Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( g5 V4 Q4 R8 s8 o( i$ E
;;
及时更新il的评价质量的评价
, ]% M9 F0 i  {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& z9 b# Z' |9 {: V1 s: jset l (l + 1). {5 p0 f! T. {" S. d6 D: M) D
]
4 N- K* h$ t5 }7 o2 l7 Bend
8 p  _* ?' X: N  Q
4 X( D: O! ~/ s& |' g! yto update-credibility-list7 D! }8 a9 {2 N4 N9 d; {
let i 08 b8 V% t# x& n( p+ h2 s
while[i < people]4 ^3 U9 T/ [# A0 E
[
  B7 O( L# }" k9 ^% |let j 0
5 j0 H% q# G+ k8 slet note 0
- Y  K  w& V' B, c0 Tlet k 0, a" e8 u9 W( u  x/ C
;;
计作出过评价的邻居节点的数目
4 q8 g+ j( \3 n$ @while[j < people]  Y4 a6 {# a& n; J. k$ x0 D
[+ c/ q) E$ m3 I1 ]' F; y0 y1 F/ @
if (item j( [credibility] of turtle (i + 1)) != -1)
% N, e6 Y" |4 N6 \2 H' b2 J;;
判断是否给本turtle的评价质量做出过评价的节点/ ~# X: w* Y% e$ R; o9 n
[set note (note + item j ([credibility]of turtle (i + 1)))
, J! n+ D  ^8 y  X$ N;;*(exp (-(people - 2)))/(people - 2))]

, v' H' C7 B, Z  y. |, mset k (k + 1)
, f7 N& q. A0 z& L1 d]8 ?! m! N3 U& }5 k6 I4 t
set j (j + 1)! h( Q  n+ x- l) K
]
* ?/ |4 ~; B& eset note (note *(exp (- (1 / k)))/ k)# C$ }  e% |  P& e0 D0 }
set credibility-list (replace-item i credibility-list note)
$ n; q& d0 b! F) p. Dset i (i + 1)3 x5 V2 Q& q4 Y
]
( Q( F1 g4 V6 @8 ~  b3 _% @7 Vend
( ]1 ?" o! m$ b. g4 R# B5 N2 P5 F. O- i
to update-global-reputation-list
% m- l  J( X. p% K4 K9 I7 o& E% p+ Ilet j 0
, F/ U' \- V( P* o, P+ F" Wwhile[j < people]" y" g: Q1 p/ o/ C+ x$ Q
[4 g( ~" }9 U- t0 r
let new 0
5 ~' T/ L0 M3 ?1 |9 D) K3 y;;
暂存新的一个全局声誉6 n5 I2 c0 q/ R$ I
let i 0; Z6 F: j7 F" O6 j  G  [  \
let sum-money 01 j' e( A3 J/ k- @' A6 s
let credibility-money 0( T" a- i  C. m/ c5 ^
while [i < people]
8 n3 P% f. x0 b! D) {3 e[
+ t$ V' o$ u, V+ Y  M2 Rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& j+ T4 ?0 Y- b$ x/ C+ w1 @8 hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; n" `) S) G  n6 M6 r. x& J9 c6 ?set i (i + 1)
* a! k0 d: S  ~8 N% A* Z5 g. G9 A$ F]
: _, P& p8 ?5 _# ilet k 03 h- L- J* c- ~" o, A: j
let new1 08 t' l4 z8 p' q: U6 m
while [k < people]. F) {  f- s2 x2 W3 ~
[
) d' ?! o! ^7 j4 F1 e, Nset 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)& Q" Y+ f3 i! J- r/ F- _: A0 b9 A
set k (k + 1)7 o  f) T( y( m# E6 O3 {) i
]0 l% e$ R, h: W& n7 G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : ~* H: i- C: P) Q6 `* X7 z. M' X
set global-reputation-list (replace-item j global-reputation-list new)
1 ?( o( `- [) C0 C: zset j (j + 1)# c4 s8 |& C+ L$ t  I
]
4 S+ ^$ W6 v) u1 s* ]6 \" p# u! q7 Dend9 `& l" o: e- v' C1 E8 }' g' T+ n" `
2 q+ |9 x/ R( e! w+ _
1 P/ ?9 a( b& L

/ ]0 P- m& D& m. x  f7 S) f, |to get-color  N. @1 l- |6 \# N# U9 k0 s

. V( _( r. b8 F6 b  Dset color blue

- ?2 E5 ?8 I1 M" f# x9 M6 Yend
; e( l/ m" ^9 j" v# ]7 y: \6 Q3 @% K+ p8 a+ \
to poll-class
, U" g6 w3 V$ h( U- Tend
' F4 N! d5 |, n. h# S8 @2 X$ ~6 j3 d. S7 ~! y
to setup-plot1* q$ S2 _  m$ |3 k# l
& k/ \( y2 N6 |1 \: c0 g* T
set-current-plot "Trends-of-Local-reputation"

  C3 b0 r) t  W. y& {/ q& K" |5 p
set-plot-x-range 0 xmax

$ _- e" u% _; l" m( \$ V+ C( b% j3 D  [: u. {  e. L
set-plot-y-range 0.0 ymax
* Z, s- l, B; y8 [
end  u4 t7 X9 R0 f2 R! u/ z  {- ~
; _6 _7 ~; }; \( X- d4 K
to setup-plot2
. Y  [  A& A# C' R3 O; x0 j% h6 o# c- ]5 q
set-current-plot "Trends-of-global-reputation"
9 j7 [" y1 `5 h  y" l
% k, N& b! f5 u9 Y- \" Q2 @3 E
set-plot-x-range 0 xmax

+ a5 z+ T5 [8 F: ^7 [9 p3 i( m' e$ c* J
set-plot-y-range 0.0 ymax
+ a# f% j/ ~0 q
end- A4 Q5 }' h& J; l" O

$ F1 s( A, y3 g0 {7 h5 Gto setup-plot3
1 J' m" ^1 i0 R; i/ q# y% K
) n5 a& n0 x" \" j3 f: O9 ~set-current-plot "Trends-of-credibility"
: }$ N& W* S& r& x' ]: {' Z# o
& I! z: W3 x3 X# G1 p$ j' C
set-plot-x-range 0 xmax
7 e# [5 s0 ?. `; W2 @

' R+ Z' m6 U3 Nset-plot-y-range 0.0 ymax
4 c9 z  E# {$ p& ]& P5 w3 B
end
: K/ V. u. X8 i2 b7 h: ?2 j$ b2 J4 K- S
to do-plots
9 y2 w" Q& H3 `6 nset-current-plot "Trends-of-Local-reputation"
- ^: ~" r/ Y+ l0 S1 n4 R! u/ N: f2 qset-current-plot-pen "Honest service"
3 i( b3 [4 v7 g- C# S0 Bend1 H: f! L3 c, T
2 t8 q( q7 u- K" l: {
[ 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.
2 D" s# H1 m) l( N3 H) g4 ]. q! ]5 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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