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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:
# U6 l. i6 \2 [3 r. Oto do-business ; {* r5 ], u7 }" c- b
rt random 360
( L  B: H  }  k$ X- q fd 1
& M: p% H" H& n0 G, `" Y, i ifelse(other turtles-here != nobody)[
( C! V+ [! B* d. V% j8 v$ U! p3 M   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.- b3 D. l$ e& V4 ?$ \9 B" {
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) S$ r9 T1 I8 b, z0 z% L
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% p+ D2 g8 |2 Z   set [trade-record-one-len] of self length [trade-record-one] of self
# G- a2 w6 T- h2 d: \0 }   set trade-record-current( list (timer) (random money-upper-limit))2 x7 {  |$ U  S
7 {7 n$ [2 i* F" V
问题的提示如下:
; F" ?4 j% M5 h7 L, l& H. p
( M$ x4 m0 |$ y" Y2 Derror while turtle 50 running OF in procedure DO-BUSINESS; B; I& ]$ w- U* A- w
  called by procedure GO
$ e! m0 H: x7 `, ^. j" |. n! {OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 n4 E# a2 O$ D% T% J
(halted running of go)
, b0 D0 ]( @' K
1 K8 I  m1 h8 L- Y! j8 X* \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~~& x+ X, ^+ n& y* _/ d, E6 y. a, `
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# _0 X$ N" p0 E/ P  U  u
globals[$ J1 `  T. O8 A9 I' ?7 _" U4 U: Y3 i
xmax0 F3 h4 z9 b) B0 ]& }+ V+ M2 ?6 {
ymax
9 u! H/ C: U) F2 @global-reputation-list0 L2 M/ ~) K( _2 E/ ~, B
  ?7 {8 X  t5 Z- F; \
;;
每一个turtle的全局声誉都存在此LIST
# N) f$ @" Y, |credibility-list6 \) A; g5 ]: j* g
;;
每一个turtle的评价可信度
0 A+ Y, q9 F9 P# n2 f, g* ^2 Bhonest-service
1 W3 i+ w  b2 e  ^% i3 E5 Lunhonest-service
; Y8 q' ]# V! S9 `; p! C7 N  ~oscillation
# W: `# S+ M0 \2 K6 a  D- s5 urand-dynamic7 p; m2 U. g  x* v( v
]4 P! A6 T8 S: i/ f8 ~: P$ G
6 m/ m. p6 x0 R' `# i' ]
turtles-own[1 z( o/ P: C! @9 j
trade-record-all: o' n2 S; t) A
;;a list of lists,
trade-record-one组成
1 A1 S( Y9 j  d' Z2 Itrade-record-one8 `- J; V+ l! r2 U, i! o
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& h( Q1 w! k6 ~" M+ ~* B' E1 V  S+ y1 p  G2 G9 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]]0 G. }) {4 \; s: p% m0 x
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]
- p8 J: V* c6 Wcredibility-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
$ F& l; S# g7 j# U4 @neighbor-total
: _* Q4 U, F) U8 h;;
记录该turtle的邻居节点的数目. m5 D  ]3 `, M' N6 k
trade-time, K( V9 P/ j4 K8 B8 s
;;
当前发生交易的turtle的交易时间- _1 B% T. N7 G0 Q$ v
appraise-give
$ q! d: T) S- k, J3 S;;
当前发生交易时给出的评价/ ^% G% w0 w, b$ ~5 R
appraise-receive, P- Z' ~7 a" C
;;
当前发生交易时收到的评价" R+ M3 |; P) u; y& [- p
appraise-time
  z9 v- t, B- Y; Q;;
当前发生交易时的评价时间9 u5 {$ v! l/ j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) B9 b: ?- m8 \3 H4 [$ |
trade-times-total# |2 G( x2 V5 l
;;
与当前turtle的交易总次数
. y8 U) j& @$ b. n" Ytrade-money-total: ]4 {0 @8 Z" {& o; b$ F' k5 y9 |1 [. k
;;
与当前turtle的交易总金额5 A" F- L$ ^/ o8 V0 o7 t# K( I
local-reputation: ]8 |' Y3 K; V; T6 Z
global-reputation
! b1 ^/ G: p2 |( I* w, C+ ocredibility
( z; j5 G0 [& z+ N;;
评价可信度,每次交易后都需要更新
& b5 p: n3 f4 L# mcredibility-all
9 m3 k( B/ i# M( w4 _;;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
% Y: E5 I( j, B7 ^6 ^6 X3 M) E6 I( k; j
;;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
6 v" D+ J$ Q# m& Z* D" {credibility-one, b$ p4 A+ d% s6 X: l
;;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( v6 ?: s" ^$ m8 H( _7 ?
global-proportion
& [2 h! p4 W! Qcustomer7 G4 }1 Q5 ~5 Q) D4 J" @8 t
customer-no
) _  \, O. b) \4 ?" t+ s( ]8 p& Q4 q/ _trust-ok
& e% v" A1 F" G, y+ Q6 }' ^trade-record-one-len;;trade-record-one的长度
- |' `. {5 R/ n3 a  \1 `]1 @# c- v8 o4 ~

% v$ m0 G5 x: A) C1 |;;setup procedure  @1 q9 z. C# U4 d, x9 p

. ?. i, j( v, s& \7 Pto setup
2 Z/ j. y6 m, o* \3 O7 u& `& h) U
ca

- w8 L  L5 T8 `
8 e* p+ b: z6 C! i$ c1 x; H+ ainitialize-settings
0 V7 m+ ], p/ {: ?

/ L" |$ b. a0 ^& i  a4 Bcrt people [setup-turtles]

4 {4 t, k5 t9 d5 s* o( R, H
4 h" ^) C# M" i& j: ~* Ireset-timer

8 l* ^# D5 @+ p- W- c* Z1 V- e. @, v9 H" F  ?3 n
poll-class
7 |8 S4 ?9 r% h* @) m# V/ [

! n( ^3 o' U8 G- Q3 Vsetup-plots

5 M( o2 ?1 U' b5 [7 p7 q# U& I9 m
do-plots
( K+ S& c/ o( A/ P3 Q
end
& g& d& v( b) b! K" w" Q% u3 _: l/ L  ]: }
to initialize-settings
1 F  f" k# u' [6 ^! ^( |) _& f" D, c4 y& E
set global-reputation-list []
0 ~8 g% a9 m" h; ]7 m

1 v2 K, l+ L0 h. Zset credibility-list n-values people [0.5]

! o4 f( t8 Y" A: a; g  X' c7 l9 O5 Y/ g% D0 I% q
set honest-service 0
4 X' n) t0 W8 U& K/ E( N

# U7 r$ y8 w2 v4 o' h6 o, Tset unhonest-service 0

4 w9 B( S: R$ ~8 a# v5 D
) P$ i9 o+ H( h# T. Rset oscillation 0

* {' j) z( I% w% v+ F
. o. p0 m3 L% c( Y2 c- iset rand-dynamic 0

! b# q. Y) j/ d$ N) tend
5 Y+ r# ]$ J! U2 m$ Z$ U
% _; M. `( [( S8 I9 A8 Uto setup-turtles
4 W1 u+ {, z! ~3 P* S1 X1 wset shape "person"1 D. W% N  }; l3 g3 ^
setxy random-xcor random-ycor$ y; J3 U( @  c& a
set trade-record-one []0 j: S9 o! G* A4 O# e  ?8 L
6 [/ |9 R9 l3 y" j3 W1 ^$ K
set trade-record-all n-values people [(list (? + 1) 0 0)]
$ T6 P5 \7 P  D5 P0 Z8 i' n" e+ F
( A( b9 }, S) A) z* C: G  z
set trade-record-current []
2 O8 |8 R/ N1 D) v5 Jset credibility-receive []; I+ t1 k! e  l3 E
set local-reputation 0.5
2 k( V. P; d; s3 {/ _) J+ u; M" bset neighbor-total 0
. r8 p( h  x. W0 F7 `: N4 Lset trade-times-total 0
5 b' H$ L0 O. G- Q4 E  _set trade-money-total 0
1 R3 d" d" @; h2 Oset customer nobody
' o6 w4 b$ D* }6 k& Iset credibility-all n-values people [creat-credibility]
; n: x# b" w0 y- kset credibility n-values people [-1]3 l9 [6 W0 y2 X4 ~1 z
get-color
0 H+ Y6 i& o( e. d( Q' [; N

: G( t- @/ [  q$ b5 U/ Cend
* S: S4 o3 J1 {  K# J6 A) E( C( C% z. U
to-report creat-credibility* w/ d- ^4 ?1 U, x9 ^5 d; u
report n-values people [0.5]
) G7 X7 D% y1 |" Bend  p4 g! L& W/ ~8 h5 ^. w2 i
/ Z: j) u/ j& f+ j. X
to setup-plots6 X: n8 P; ]5 Y8 p5 R2 H# R
# V$ k9 r; R, W, a4 i
set xmax 30

/ W/ U' O  C4 u( H: r3 y& w
$ K& o( s! Y# f" ]& Y6 E, W! pset ymax 1.0
0 N) }- z  |, e% c
5 N( Y6 I6 f/ p$ S) g) L" [
clear-all-plots
1 q* Q, Z! x+ W# V) n% g- L1 O6 X$ a

" @; `$ q& C+ U% b" z" ?setup-plot1
: N1 g7 G& e+ ]% D+ R# P
- O( @, H  e6 S* S& P
setup-plot2

- R% x, k  _6 k2 {% _7 ^: I& e9 a, R; g8 n5 a
setup-plot3
( \  V* _8 L* G0 D
end# W) x) b+ J/ \+ S
% r* c3 s* A) i6 c! {7 w- C- C' I
;;run time procedures; _5 x7 T% ], V% @3 N3 J

. }( e4 d5 F4 C) Y+ I1 gto go+ j# {3 ]0 I' I, N* N4 F- K
$ H% t5 H& n8 `. Y' ?, R' g
ask turtles [do-business]
. I  v; @6 g5 S& p) x6 J* u
end' R+ K# t. b5 e! p

; ^1 k& {7 {) jto do-business
, o% V% H# B, \. Y7 S0 F9 E; w

; i- g$ K8 m, k, z
: L' [' C1 f# D- E4 }  I' urt random 360
0 t* Y7 y/ w: `  }
+ P. `8 u4 y6 A1 g9 `  H. t
fd 1
' @4 f0 T& M7 z2 m9 c

, o, U, B* m$ q6 Oifelse(other turtles-here != nobody)[
" ?' F/ g" _; z5 C
1 z2 t/ X# _1 h) {* A& i
set customer one-of other turtles-here
; i; u- g6 i4 k3 Z

- o0 X" Z/ K1 X4 ^8 o% m;; set [customer] of customer myself

6 b6 Y+ u+ @. l
3 G% u1 w6 t, K% @4 A6 }1 Iset [trade-record-one] of self item (([who] of customer) - 1)
( v3 `9 w& G2 W" D* p+ b  r[trade-record-all]of self1 l3 A- S. f$ Y3 @; z' a* }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- _# \% k" h# O4 Y7 J
2 v" t; |2 I0 m) p3 \2 P5 P# `
set [trade-record-one] of customer item (([who] of self) - 1), U+ [$ l, N9 o3 \: s" l
[trade-record-all]of customer
/ F7 W4 I0 t- D8 S+ K( e

$ Z7 ~3 E0 h$ d0 c* P9 w; gset [trade-record-one-len] of self length [trade-record-one] of self

. D$ N7 L* F8 v& w7 ]- Q- F1 Y' A& ^- R. }  y) z; d
set trade-record-current( list (timer) (random money-upper-limit))
7 e& ^0 q4 h: ?" p9 m  H
- g! k& S& F/ n$ r- P
ask self [do-trust]
1 v0 r# ]! |5 E& c+ F3 f;;
先求ij的信任度
: W2 |; S4 D8 w2 v% F
! ?- B3 U. F; W1 u  Iif ([trust-ok] of self)  {0 Y3 M) i) Y: d+ I. w- y1 z. ~
;;
根据ij的信任度来决定是否与j进行交易[- r' t# t$ F0 ]3 B2 `; I5 @
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ C$ D( n% h/ C4 F
4 y! e- ~" i4 ]4 r# v  y# i
[

8 q) ^: Y: n- m0 r
( H% Q+ A! ?; s& Ado-trade
* X; O; B* T. h* t9 D
! {' [6 i+ z/ @) \1 o. w+ y
update-credibility-ijl
2 B/ [4 ~  |, F* K2 e

- I/ {- u5 n$ Q2 fupdate-credibility-list. c6 w$ ~" ]' ~  x

; F( T  U4 i, d; }$ Q: `' J& W7 R! N
update-global-reputation-list

0 l  @0 x, S! e1 P2 T
/ V6 c' a) m5 w3 Bpoll-class

7 q" }. l# u0 Y+ d+ n; k( c- |0 ]8 X' T: L  S+ w) a
get-color
/ p3 L! S  V$ |, j- i

9 M4 ^, ~0 C3 d]]$ {" A- }4 `0 n% n

! Y6 y1 w1 Q6 d. {3 y% s;;
如果所得的信任度满足条件,则进行交易& P# [* ~: l) C5 p( {: ]) W
- e) f- m' P( n( M. m
[
) F3 R* V. I- O: V$ [
# }( a* Q1 E5 h& W/ ~0 O
rt random 360
3 z5 M- K1 _4 y2 }0 G! o

: n' ]7 p% {' H1 i" D2 @& ofd 1

7 t0 D$ _$ g  V( q4 t: G+ ?2 q; X- w, y4 E( z0 d
]

3 f$ O: q6 O7 l7 p- x9 o$ ~
/ E1 }8 ^$ \5 ~* E$ e: tend

3 v; L! T0 Y5 ~
1 B" J* w# U) w& c( B5 m) j/ Cto do-trust & @6 |2 P( U; e+ y. Z; [" W$ l! E1 k
set trust-ok False
1 ?6 ]. W0 C+ m  y- Q7 x; N" r4 ]4 w- @$ e% E; j$ l

3 e' ~! W. U$ c" ^( D7 m: Wlet max-trade-times 05 H7 j4 ~6 H  J4 W: D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" m. h# h8 h# k" \$ v4 y+ f& I4 P
let max-trade-money 04 t( n! z3 u% g3 |* L: _( q; u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 Z- U& J6 Q9 L$ D( e- L  K$ V9 r& Flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ Y2 ]2 I! V$ M( R; k( X
! B1 r- N/ Z: |' q
, {8 w0 T; i8 u. Q0 \
get-global-proportion8 c2 e: m! [; S+ G6 w, C1 I
let trust-value
5 N' r! s& F' nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
6 }* |7 V! |4 [  A6 r1 \
if(trust-value > trade-trust-value)0 q0 I1 t7 ^+ A+ O2 p, I7 q
[set trust-ok true]
0 u. n2 l% [  l2 i5 N) l' ^end
4 r3 K5 ]  r+ f. ~/ n
' i* J" i4 O' k; @1 }to get-global-proportion4 w$ W6 M, O: V' y. S# v* {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# t( z" q' A. a+ }) i1 g, C  P* b
[set global-proportion 0]
- J* x3 z) j2 y' \+ X5 C[let i 0
  t$ t6 \# V/ R1 @+ Ulet sum-money 0! G/ E5 r0 w0 Q/ O  B% I4 s
while[ i < people]8 S, n* [3 Y) Z+ ?
[2 ]8 a2 \6 G, r! k9 z! S' t/ M
if( length (item i
3 M, h# r5 _. P; s; P[trade-record-all] of customer) > 3 )

& i$ g" ?. ~) x! |9 u5 `( U! x! ]6 u[8 b! X# D. p2 @7 l$ T+ v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 c7 a' f) i/ a
]% ?4 I: D( l5 m
]
! Q  }1 s, m! ^4 [let j 09 x" Z8 x, o, i" z
let note 06 u, a+ |- x# @: X, L) \" @# w
while[ j < people]
9 c; _5 ~& T# K' A[
( F6 E$ Z, W% S+ Fif( length (item i
2 {2 S0 Q" ?! T8 {1 G" K0 t& W[trade-record-all] of customer) > 3 )

+ d1 z* Y5 J/ C[+ Z% ^" L0 ~% F+ B8 r* K# J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; c2 A7 B' |7 @# {3 Z6 C# S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! _# I; ]) C9 }+ A' |: u* [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% s; q2 o3 ]3 K]% E0 {1 J7 o& x3 b
]3 G3 w% H( U- _4 k1 ?
set global-proportion note
) M% ?3 n. G, }2 m! m]
) P& H( r; z# b, {: l: S; Q* c1 Qend
  R" O0 |3 G* s4 ?7 ~7 T0 i
: S5 L. x! U4 V& ]9 E& A4 wto do-trade
: d. q8 E: _+ X" A$ ~3 R+ U% j0 d) e8 g;;
这个过程实际上是给双方作出评价的过程4 p$ V& D/ F/ C- }9 r) `& H0 e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ A, ]7 X1 p# F6 |8 [3 T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  @( ]' R* O+ Z! b; K; Eset trade-record-current lput(timer) trade-record-current6 V) P$ f% u* X) d9 N
;;
评价时间
* E! h$ E' b  d( Q; u  m1 r8 \ask myself [' t; C+ H( v# `
update-local-reputation0 S& B; l( E- ?  Z0 ^
set trade-record-current lput([local-reputation] of myself) trade-record-current& h4 B) _0 N( i- H' E" r. t: p: D
]1 t5 r$ c% `4 D$ g# u1 n
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 d8 n. X5 d' [: X- Q) g
;;
将此次交易的记录加入到trade-record-one
! ]% j4 M/ F  v4 Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& k3 t4 V$ F9 A% @8 n
let note (item 2 trade-record-current )4 b- G# c) k: w  K  }
set trade-record-current
. _2 X" X, s6 p( y8 M4 Y(replace-item 2 trade-record-current (item 3 trade-record-current))

. V+ e9 s5 u8 B" ?5 X8 V' W( wset trade-record-current
2 v( d, g5 l0 B(replace-item 3 trade-record-current note)1 M% G; p8 [2 Y8 R" \/ Z; B

  I0 V8 q; `; F3 M5 f8 L

' P+ h$ }" M% Y& e) V- u1 x& Hask customer [
/ W; \# h9 d% _6 o+ Q$ jupdate-local-reputation- D1 Y8 X' ^2 ]( X) Z- X
set trade-record-current
; u1 H# p8 m) U9 }/ |. t(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# E. C2 }% O0 ~; H  h]: x9 B' r; q5 d$ O' f  L
2 I8 ]2 J$ U; G

9 V1 \9 c- r; I& U2 \/ g8 d) tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 R% U& @% ~' x4 ^0 A: b8 ^

) h8 Z7 N6 F% k" q' J- Mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ N6 a) y, `4 `5 z' `8 k;;
将此次交易的记录加入到customertrade-record-all$ B4 {  N( Y* {4 o3 K
end# i( D" Q7 M) f& `
  K" v/ U+ }! W$ z$ H, O: U
to update-local-reputation
8 k" [' }! s# M/ n6 ]) c% E# D  Nset [trade-record-one-len] of myself length [trade-record-one] of myself& K+ }3 Q  I1 r  J' w

4 z2 t6 X) d0 m, `" }' ^( W7 R7 ^. E) }2 U% l4 T
;;if [trade-record-one-len] of myself > 3
; d' e, G6 {  D
update-neighbor-total) L: Y9 X0 @5 Q* T. |% `0 F8 y, `( O
;;
更新邻居节点的数目,在此进行- l, A# b2 x5 J% @; u5 E
let i 3
1 e5 L# A0 t5 T  N* tlet sum-time 0
+ P! W8 Y/ x; ~' x2 N) ~while[i < [trade-record-one-len] of myself]6 {& L- a5 I4 l3 H1 _5 p7 n, D
[1 J# \$ s4 z! r8 `
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, [8 ~9 Z, Z+ l  |3 |0 o& |set i
6 ~% k! E  y$ l( l( i + 1)

" e" I5 b* _3 T]% i: E4 p3 x+ L2 T; F
let j 3
, `, i# K& P" h, ?let sum-money 0" |- a+ [3 G! {# N- c7 K$ C2 C
while[j < [trade-record-one-len] of myself]! X; ^; S$ _! t( u. x0 Z
[
  R; u! C! _) @/ Kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# k6 W( Y6 F3 b1 h% d* N8 N$ ?set j
. a$ K. l3 T* H4 r* c( j + 1)

9 _: Y. J! l; x0 Z/ V! q]
& O9 c/ ]9 y5 s5 g( R6 ?let k 3
: H  I- L$ }! w0 E' S( zlet power 0; m( P7 c' e8 W
let local 0
! C; M3 E; u7 m( b2 j6 ?' s/ ?& zwhile [k <[trade-record-one-len] of myself]( O1 d( {& M& K7 z* X
[
# ^4 E* @# K5 Lset 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) + K0 R) K, ]" ~) e! o  Q
set k (k + 1)
5 q0 w! L) i; T: P8 Y]2 f9 t+ n$ H# G3 E) N$ C- c) A
set [local-reputation] of myself (local)/ h5 M8 u* J( }. U7 P" _' x
end
. k3 m1 q' f  B9 i4 V4 ?/ R7 \1 E% S  u2 }, a* i
to update-neighbor-total6 W+ u1 m9 m9 ]
, x' y! f) {* z/ r. L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 E  d  O2 f" f. y

6 L% v; G, j) k- m" [& ~

3 J! E1 {1 v1 o& r, Uend
- k5 G# u. i/ [4 f
' v, f/ C, c6 I' vto update-credibility-ijl 2 @. f! C/ C5 }$ \
8 k  t6 d2 l' y& n& W. v
;;
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。
; a. L" \7 D2 Xlet l 0
' H" c" f6 V# Hwhile[ l < people ]3 N: o+ \; I+ ^- O. ^2 s, F! f
;;
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$ V5 L9 T( [4 U( ]4 U" o
[1 Y8 ?4 g1 V+ V+ i5 L2 ?; Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. {3 I1 J# s1 O" u2 l* t9 p3 A+ @! _if (trade-record-one-j-l-len > 3)
0 @4 h' U3 a3 [' a" l[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-one3 t" y8 w4 p2 _) ]
let i 3
3 Y/ I; m0 n. N9 O4 q7 xlet sum-time 0
5 l3 Z/ M# }6 \6 F) ^  Q/ ]6 D4 |5 Rwhile[i < trade-record-one-len]
( ?4 D4 c% M8 E3 K. {/ [" M[
& ]9 P+ U- x1 G2 d2 P2 \* o: Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, H: z8 \6 m* Q8 f: gset i. I$ M! G9 V! R
( i + 1)
) J8 c# c, @2 Y; C* e! x2 ?% D7 a
]5 |8 U3 W; F- }" @) @2 I$ V5 r# ]( f4 m
let credibility-i-j-l 0
7 m1 ]/ R$ _7 c. T;;i
评价(jjl的评价)
+ w( d: X' ?3 c( x7 o7 n& hlet j 3' a& n. Z" h% `# M& Y
let k 4  D, q! X, T; w6 ^! U
while[j < trade-record-one-len]: ?. T5 }5 u/ Z7 T! l
[
4 ^/ c0 a! s0 y! O. _5 |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
2 x) w* Z: C) ?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)
" G& b! r2 ~" p; c- X0 N" G1 Bset j* g! ^$ }# d- I- w. P
( j + 1)
/ _" `( O" I2 w1 X+ y0 q
]
! ?% M6 A- |5 x6 q4 X; H2 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 ))) i( a' t/ Y0 x
' q8 c, D0 |: D  z; P
7 `; f) T# f3 L
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 `6 u- `0 v2 R( |  h- e" q;;
及时更新il的评价质量的评价
. T  j% I8 `+ W- {1 d0 [set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 f: G1 F5 o( F+ d; Aset l (l + 1)
& ~) }* s2 _( M. e9 \0 B/ P8 C' E6 D]
4 [: q3 {7 i. w0 j. t3 U- T1 Eend& ?' z* z% S0 I, E  \
$ r/ U# g+ Z6 u4 `+ \
to update-credibility-list3 F' A8 V9 u3 I$ W
let i 0. t9 w0 s) o; P
while[i < people]0 ?6 [  T# n0 w' ?
[3 H" M8 y& m+ o7 ^7 B8 X9 N
let j 07 s# E3 |, m, Y" o" C) Z
let note 0
6 L6 O, T: |" J2 Qlet k 0
% ~# `  d* f5 L- x; i;;
计作出过评价的邻居节点的数目. Z' G& E2 H$ J
while[j < people]4 ]& O5 m$ f8 n6 b! s$ p4 y# V0 ]
[, [4 _* ]. {% ]3 f4 L
if (item j( [credibility] of turtle (i + 1)) != -1)8 ?  x! n) u" o( e
;;
判断是否给本turtle的评价质量做出过评价的节点
. P3 \' k" x" G. K3 D' d[set note (note + item j ([credibility]of turtle (i + 1)))
8 C# d! h! g7 A; B; U6 R;;*(exp (-(people - 2)))/(people - 2))]

) ?) H% z8 X; vset k (k + 1): Y% B% `4 J$ a6 i* N3 n4 a. J
]) G& P4 r  |. V) Y
set j (j + 1)
- b# k: J9 i4 ]* s3 P: Q9 o], @- h* U# u( ]  V/ X
set note (note *(exp (- (1 / k)))/ k)
" m: x  b  k$ Z, s" s* B% E6 G( Iset credibility-list (replace-item i credibility-list note)# C9 |3 `9 q2 q$ I8 p% c- l
set i (i + 1)/ y) |& ~* A( S
]/ \" T8 ^( L( S' K
end$ q! b, x$ `6 M. B' z1 p% [
" K$ v( C9 {% W3 A* n- j- z3 V
to update-global-reputation-list
  q5 Q- x% d1 A, X* p9 S% Elet j 03 E; D! L& W8 X- i+ N+ D$ _4 }
while[j < people]; F. o5 G& ^2 t& Z+ s0 ^* Q3 b
[% B, U0 y* D+ i, v; M7 o/ u
let new 0
) \; c* a6 _4 l! }7 O. |; X;;
暂存新的一个全局声誉4 z$ ~0 J" B" \2 O
let i 02 }; v' H! M. h: v
let sum-money 0
8 Y: X0 k! A% i) _  clet credibility-money 0
. I" c+ H' m% h/ z* _while [i < people]9 L+ V6 v; ]6 R! l1 U" ^  k( Y
[
! K2 d/ w  h  M' sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& V8 ~  Y. @7 ]( X7 I" Y# f  Q/ i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 x5 \9 _$ ]% S" {8 Xset i (i + 1)
1 {. t$ T2 B( T' D1 ~/ F8 b' p* L& U]# O3 X$ c4 W4 s7 q+ c2 _
let k 06 `/ \. x& D6 ]0 w+ P5 R
let new1 0
, }% B% Q& m  }* p; a1 Lwhile [k < people]6 v3 ]% G& c) M3 A' s( B- Y1 s
[& ]5 O8 ^- n+ s
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
1 w3 e; u5 L) y9 i) i. mset k (k + 1)
4 r- C, J# K' w]' ]% l+ p; t6 U8 _2 B
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( P. k+ x- t' _set global-reputation-list (replace-item j global-reputation-list new)3 l' i% q" ]7 u+ s3 v
set j (j + 1)
7 y. k2 E2 D) y4 W2 L]# p1 `. F$ V; F5 Z2 l& ]
end
' c7 p" z' n. H; T! F+ c& q8 D; H

) s. b- a! b; I6 e" l/ \
1 |1 l- N4 f# `' P2 L9 \to get-color/ K) j) o, n! V$ u. [/ r

9 T5 a, @, ?6 i, O- c4 oset color blue
- c3 f6 L4 H( U9 P" r1 O+ g$ S
end& h" M2 f1 Z  `' G- v7 Q6 U  y
. V* ?# h0 _% h% G8 d+ k& \
to poll-class
2 ?7 i  {2 g: [+ x, T& u0 R7 N. Jend
6 e% j8 a1 E0 L' H  y7 W3 R
) B+ ~7 J, O* hto setup-plot1
* o* O3 ?. g+ ?4 q$ Y7 b6 O/ g% n- B: |1 y5 A9 y5 l2 [( a( o
set-current-plot "Trends-of-Local-reputation"
' r" ]. }& t2 }* b( s/ V
' x3 ?. S# D0 P4 j! F7 S& u( U
set-plot-x-range 0 xmax

# ?/ N; E1 S* J6 @4 N/ h* I# j5 N& e; X. \; D
set-plot-y-range 0.0 ymax

8 o- a1 E" K7 ^* u5 i+ Tend
* S9 ], y0 Q, ?/ c0 [
2 ?% Y5 D1 U3 ], L; a- I9 Xto setup-plot2
$ a4 J6 P/ f  L* r  i9 t; ?$ X1 o6 R+ j* T3 j
set-current-plot "Trends-of-global-reputation"

7 D$ R# ^% X2 r* k# Q; c* l, t( s2 `  [# R" L& n
set-plot-x-range 0 xmax

2 U; V, n& m5 x3 G
7 ]; s7 t7 @& [2 Yset-plot-y-range 0.0 ymax

  d  m, ^6 {1 A4 k% a$ vend3 d7 p8 T1 `/ n9 ?6 A

2 j2 f4 c# Q" ^to setup-plot3' I7 ?4 x: G& w$ A' Z
" |# _( \  \) D$ z
set-current-plot "Trends-of-credibility"

7 o: o# R# C2 e) J* B
7 Y4 G; A; T3 h" }1 Fset-plot-x-range 0 xmax

' l* H0 v! X! b6 t0 G3 N) b% A$ f( H# _: ]2 _3 P
set-plot-y-range 0.0 ymax
" K' I! }: E; [% r) w0 [) s0 B
end% L2 W7 I# T( T9 g0 j3 ~8 x. @) N
, K8 G. c1 n* y6 F' |  U
to do-plots5 K9 H' g* U3 f) h3 h# I
set-current-plot "Trends-of-Local-reputation"
" x2 K- b& h& a( T6 l. M7 `set-current-plot-pen "Honest service"
# G  |2 l1 x& Oend
8 T. O1 c- @; @1 L- E; N+ W  c  G; O# h9 O4 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.
  D! Z2 V' s0 U! Y1 _1 O  L4 Y7 [! G! d
" k3 G! \8 A2 j. |' v6 B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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