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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:3 L) r( ~5 r+ l3 {# Q$ R% A
to do-business 5 M- Q& ^/ r: ?
rt random 360
  V' ?! l' |7 S" C4 Y" o2 I  L7 M fd 1
$ n. B9 _, s- B8 y  m; [ ifelse(other turtles-here != nobody)[8 d5 j% `- q5 j, |+ C3 Z) o( x
   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.
" c' {9 N  `( R- z! X- g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# g2 F# }7 Q( f* A   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- J0 _( E: D* Z, n- _
   set [trade-record-one-len] of self length [trade-record-one] of self- `4 [! ?" q6 y! P8 R
   set trade-record-current( list (timer) (random money-upper-limit))3 G7 i: @% U3 {5 T& k' N+ c0 i5 Q
7 A) @8 u) R2 P4 B) j  n
问题的提示如下:
# c0 Z4 R" I+ n$ r1 Y& g% a8 D( j2 A% K5 Z2 H3 P
error while turtle 50 running OF in procedure DO-BUSINESS4 G- [& s( \* M" x& J) J3 B
  called by procedure GO" f* U( \7 _7 v: E1 a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 y# L$ s" H/ L7 j
(halted running of go). ^0 D8 Q' F* z9 C4 r" \

2 i0 Y( q0 D8 z$ ~; v& r5 L9 T* 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~~
5 w2 h, S2 b& z0 J2 C% I; e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
1 e' h" |, {4 N+ aglobals[
( O4 b5 a2 N; L2 z, m4 B: jxmax
( @+ ?* t6 u8 h9 z! e% o" Iymax  ^" L6 f6 P2 X- P. t! j+ A/ ~0 H
global-reputation-list
$ Y$ G" s# C& Q$ s3 n3 O$ B$ x
8 e& v6 E; R9 P. \;;
每一个turtle的全局声誉都存在此LIST
7 F( \5 F- U1 s( C3 p8 i+ Vcredibility-list! c1 [8 c0 S$ }& N1 `" \
;;
每一个turtle的评价可信度
3 O: S2 p! y2 P- Z0 ]: l9 khonest-service
. ^6 Z6 i, {7 G4 aunhonest-service
# B) E* x& n: s' M9 Y9 U: ~2 qoscillation2 b3 f' ]) U; L- y* Y% ?
rand-dynamic
2 H/ U! d( V; G7 z' ?2 G]/ o. t+ P+ D$ j0 U* P
; A1 q9 u( F% X' U+ r
turtles-own[
) r9 M' q! S( x9 S/ T; S8 vtrade-record-all
; a# e& j5 E, J2 E5 q1 l1 `;;a list of lists,
trade-record-one组成
$ G) H$ k4 s5 I0 Ttrade-record-one$ ?$ x7 [4 h! }
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- e  l" p( ]/ c5 P7 l

8 W8 a6 m1 W7 B8 L& k;;[
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]]5 X- N) j$ k! Q- B" N7 R8 N
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], O* t  n5 P5 P4 O( T
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
% ]2 I7 ~  |! b" L8 H7 Sneighbor-total9 r& f0 H, s; l1 d# c, h0 s
;;
记录该turtle的邻居节点的数目
! D2 R, Z) U7 Rtrade-time
6 x& q0 _0 L* K;;
当前发生交易的turtle的交易时间6 {4 }0 N, U% E0 M" k8 `
appraise-give
1 p  F& G* D3 U! M; i& W( V;;
当前发生交易时给出的评价8 O+ t6 D$ D6 S) F
appraise-receive
0 i, B; f+ U1 @* g+ y* X$ S( E# Z) i;;
当前发生交易时收到的评价8 A. @- j# v; B" j8 G* ^* X
appraise-time
" e5 a8 W/ E  V# G* U;;
当前发生交易时的评价时间
3 o$ W4 t) j1 Ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 ^  ^+ N" `/ j4 [9 s# E8 X" utrade-times-total
3 `5 k7 A* Y9 s1 V;;
与当前turtle的交易总次数+ d2 [- J6 i+ ^& j8 s
trade-money-total  I* t2 s1 Z+ U
;;
与当前turtle的交易总金额
6 t4 @" Z, w! B5 xlocal-reputation% L) N6 X( n( F  \, a2 m7 W
global-reputation" m8 |& n4 b. d
credibility
. I! L& v2 c& `' U" u) g3 s;;
评价可信度,每次交易后都需要更新
$ h* q# e$ j3 a1 S; Ccredibility-all$ |2 P  Z9 {- f( E# A* c
;;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4 S& p6 e4 `4 C% ~/ Y

( P7 U. J, `8 {% c7 ^. H5 v: X# w;;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
. Q: q7 p3 K/ h1 l  Ycredibility-one
. ~* J8 {/ q- \( _% r1 G- k- I) X, d* I;;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" E- h! I* o* w. `
global-proportion: Q6 M" K( Q; U& F8 m/ {: ^
customer2 R( z' V: o3 N+ z2 t6 c  B
customer-no! v9 c5 d8 H! k
trust-ok
4 ?! N; k# E1 m" otrade-record-one-len;;trade-record-one的长度' o. o" c# U7 F+ W% O
]
7 G! \* s( q1 E5 W- V, X) T# V" U6 K; @% \# e- }, ~6 h
;;setup procedure
$ J! ]5 h- Y8 P  d. P! e3 ~3 o1 Y3 E, W) [8 N, m
to setup
3 C6 M4 l2 V/ D- X! b& L1 F8 G/ `8 i6 N7 ?
ca

7 i# m+ n: W, Q
4 }7 T1 ^. v1 ^, \2 U/ d4 H5 Vinitialize-settings

- q8 t# `  A% M6 |/ A
4 f& d$ k! d5 ?- Acrt people [setup-turtles]
/ h: w8 c, H0 \" s8 B! P2 N! M! j

! ^$ |8 a4 {* k8 T# A5 v8 {. c; Preset-timer
  ]5 K$ X/ U7 q5 L
* s5 i/ c8 E- P; g. v
poll-class

- Z( |' z+ N9 u5 y& L* O! d8 T
% h6 c6 S; y3 [  w  N. Y+ q- h5 s/ X. Tsetup-plots

$ o4 v* [0 \" ?2 C; y, k* U5 g& g6 q; d
do-plots
. e$ @  ^4 f0 s
end3 G* f3 q! Q6 S/ n

& \3 @% N4 v% Q. E( O9 |. X# W8 P( d% Xto initialize-settings1 J, A$ s7 A7 a6 w/ ]" J

- f, o5 F1 x* T& H) ~/ K0 ]+ p  Tset global-reputation-list []

1 R4 V9 M; P) y0 V7 j. ^" ?
+ y7 g0 S# @) Aset credibility-list n-values people [0.5]

. y: D1 x; F0 _( R9 b' \# ?9 D0 E0 F' T" W% i2 \7 h- g
set honest-service 0

# F( ]1 Z0 a( O9 p/ k1 q9 E5 P
" S- E: O) D5 `set unhonest-service 0

  @! K- V4 C) w0 f" ~/ z" ?& \+ f  j
set oscillation 0

/ l& g; u0 D& k8 F6 v! w4 u! q
set rand-dynamic 0
- x! k: \. H' Z' G
end
, G* M0 E* M/ {- y& H( r  m
( R6 \" b& p$ ]( H. d, l  Vto setup-turtles - V% `7 d5 A" b& F' w) O
set shape "person"- y* h# X( l, W, y2 H! I
setxy random-xcor random-ycor
! P: J) Q: w! e0 y: e" @set trade-record-one []: C# z5 a: x3 Z2 e3 t: E7 u' ^2 V
: d8 M) C- K) q6 x; E2 [
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 _  S* S/ _$ @' }- K
: m9 A3 V% N7 A: Z5 q
set trade-record-current []$ t( X( f, `+ G* \5 w" I
set credibility-receive []
4 g! m, B$ W3 f5 `$ }set local-reputation 0.5
  ^( U/ |$ e! E, V( eset neighbor-total 05 Q$ ^* `6 [1 v2 _) f+ V# ]1 f
set trade-times-total 0
$ @& X# F# d7 _set trade-money-total 0
8 ]! J- @% Y( y( }/ F1 x$ Kset customer nobody3 y0 H7 a" P. F2 {6 i
set credibility-all n-values people [creat-credibility]
' V5 I  c& m& j+ W* E8 B8 sset credibility n-values people [-1]/ s; L. K8 W/ v$ n% u, [0 }  `" P
get-color, F: V1 I) k) z

9 }' G# o! H" {+ [end
* V- b5 K# h% E3 f1 p. B2 V: {0 `4 S9 ^( r, s; k6 v6 F( e
to-report creat-credibility- Q! x( H1 m* M( M/ O
report n-values people [0.5]% {2 ^: u" ~7 y. [4 [
end  ?' b7 y3 ]$ U! I6 f
6 t' N3 _- a, x) ~
to setup-plots1 X4 M" D6 \: W( W5 j

! j2 p" i# m3 A! _$ Z! D2 Hset xmax 30

$ ]6 v, r4 b5 F. h6 G; H) e& a5 {  C) |  k5 k) Q1 L
set ymax 1.0

7 }& A! s0 Q+ P3 }! N
. a# t/ S  u8 T& r2 I1 Xclear-all-plots

3 r( W& M9 }3 z4 ^) X8 u8 W
" x: _" Z3 O1 [setup-plot1

4 }# z& w7 _9 R7 {$ `, x2 ~$ p7 i/ D: I  P# S* {
setup-plot2
+ l5 {2 ~7 R, o* E
% ~( t$ Z) K" _0 Q6 A3 R% \0 f4 O
setup-plot3

- }* u0 e4 t% N6 m8 w& A2 u$ i3 }& O) Hend% d( L+ E! k* g

3 E4 v) J& w8 e# \; n& r! U;;run time procedures5 A1 `0 l, C& V: M
$ M1 O( D+ N# W: \
to go# L, E3 ^3 q" c$ a! U
  a* @2 t  `! m1 g% ^: B) u+ V0 r: N) [
ask turtles [do-business]

1 F' ^. K1 }7 v' t, `& Y9 J) Kend
) z  {4 }; Q- V6 C% t
6 v% J- x3 }& i+ Z$ Rto do-business
" [$ J5 z+ e/ H

# W7 i4 w$ @1 t# G5 @) e" e7 v
; t6 C9 e2 i( @! G' L- brt random 360
7 l5 g. O7 a& l
7 S! E9 ]$ S* P: s
fd 1

9 h# V: N! I$ Z0 \' x$ n6 ]  }
, m$ \+ K( \# @ifelse(other turtles-here != nobody)[

' O5 j4 F9 _+ O; T* ]
2 i5 ^5 W$ v4 Jset customer one-of other turtles-here
, F8 ^+ P! q! W8 @; ]; w9 {
1 {+ \, F! z3 ^$ {5 q5 F4 J- T% k& i
;; set [customer] of customer myself

4 h% S" E2 K9 ~3 B/ X; f; \( k, J: t: z( g
set [trade-record-one] of self item (([who] of customer) - 1)
. f/ Z; W. }& @! m[trade-record-all]of self
5 k8 C1 w$ j- `) S! [5 E) p6 Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% B! V7 D" v& ]$ U% S! E6 F9 Q1 D5 X% w
set [trade-record-one] of customer item (([who] of self) - 1)  T6 _( e* u  z* z; f2 a* S
[trade-record-all]of customer

: F* A( c, j; B& n
! N. S! W" C, L: s8 d: cset [trade-record-one-len] of self length [trade-record-one] of self

1 u9 Y# G& v" G0 l% h6 V- V% @' `( y/ b& g- E* V5 Z1 {- o- c3 |
set trade-record-current( list (timer) (random money-upper-limit))

5 E  W% z  `& {- _, U9 g' W& ^
ask self [do-trust]
5 F) l3 a' E5 a! M;;
先求ij的信任度% w* n4 J* v/ _# m

1 p* `! B6 l1 Q7 l7 B. x8 C! U& ^if ([trust-ok] of self)$ B. w3 _$ l" Q5 ~( j  y8 g% C/ E
;;
根据ij的信任度来决定是否与j进行交易[
4 G' I3 q7 M3 p' f- y) Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. _3 I5 z5 G  M7 l! W2 h& `9 _* H) [, |! P; T5 g" e0 q
[

- @' k- v! I1 p8 Z# v( K8 i6 q* W* W
do-trade
/ i+ ^% H! n9 ], L9 d9 C

# M$ {+ \2 ^; ~$ ^update-credibility-ijl

/ s! x  H2 h$ |9 R  b: h4 E6 U1 ~% B
update-credibility-list7 O7 V  }* c; r
, L' o. ^  a/ f$ l; F) ^6 z' j
! `; z' ^$ o0 `* ]) E
update-global-reputation-list
9 M# Z% [* J) r% X% l0 U0 I  y

$ C" M7 Z0 o& m  y1 T5 S- Qpoll-class
# `1 g0 O4 H( P% J8 Y# v6 m% w
4 g6 h' ~. r) s! H8 }  o
get-color

% b  F( `8 z3 X- a5 o5 X5 @; `2 D7 t: t, n( o* r/ ~& M; f6 _
]]
% _& s' u4 V; a' k) S5 {  c
1 }% e8 W) V5 F  P% Z;;
如果所得的信任度满足条件,则进行交易
" f6 |( m" L: `. E; U
, K9 z; p, Q8 \) M[
0 C+ o  I2 ~4 C* o7 R- e

3 \! z4 m2 a0 S' ^" B/ ]2 {  [rt random 360
* y, F4 I$ \3 G2 X, y, n; U( X. s

- L1 V* [) q' R) S. ^( T+ ifd 1
' U2 S0 H! W/ E9 n/ s3 W* a

3 y& a+ G0 T9 d]

( M, X4 o8 R7 m  W6 G9 ]$ a1 o" Y# H, y
( L- d' R9 h8 Eend
1 e; ^/ `7 |' a2 {
) b9 D- v( R8 i7 w& f
to do-trust
; h8 N$ J& C; i( x( y# b$ `7 Rset trust-ok False5 n+ I+ D& M0 C- [9 j; Z5 ?

9 h: @, I2 x; ]7 [
& t& K5 u2 p% A2 j
let max-trade-times 0
6 D0 Z5 Q& d; V; fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ k9 C+ {  s& K% r: I& `3 X
let max-trade-money 0
" N6 @  K5 I. j; B4 x" n0 s; {' c% hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 @- w' Z, T4 {( P. E( I/ ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 w$ }$ g: g$ `
$ O: z4 L; \. P
4 l  k' W# {% H2 {
get-global-proportion, R+ K" p" V: h1 n
let trust-value
" v- Q) m# [: ]" _9 Y9 ^& S4 o4 Ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 Y5 i. F4 c: ^, b) `) _, G# m6 Wif(trust-value > trade-trust-value)& _& @8 z$ j/ n* f9 o( `
[set trust-ok true]7 H* ]' N' l5 v0 O
end6 n* e$ H. {9 `, b* n1 @
0 ~, S/ }3 V5 q1 k2 f
to get-global-proportion2 h8 A. g% N+ x5 e0 Y0 B6 Q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ [/ T- d* S2 h5 O8 \7 {5 t$ B[set global-proportion 0]
5 e( Q1 G8 ?1 l" z1 C- c[let i 0
' G8 u+ H8 L- `& K3 |2 U( Clet sum-money 03 V) S/ B! t# ]) l6 ], x
while[ i < people]/ X( Y  k0 {- B9 \4 t5 n6 c. d
[: o7 ^. O3 M  i" `4 M
if( length (item i
6 m$ R# W* F/ V[trade-record-all] of customer) > 3 )

/ n9 s7 O2 ^& ]  v( m[8 x' W' l1 j% C1 ^6 P5 R/ f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))! q% m' |5 V/ t2 u5 H8 ~) q) X/ l1 Y' u5 d
]
$ Y2 G5 f5 R) `. E% p]
) J8 s$ q& P% }$ ~let j 04 P- w! N! Y( F8 D+ m
let note 0
) S5 N, [3 R, E/ Pwhile[ j < people]
! M5 |: v! h$ U2 K& L: l[
- S9 O. H1 f9 X3 w! t! Y( D2 c- }/ pif( length (item i
' I; W+ s' Y) y$ v. v, m* b- O[trade-record-all] of customer) > 3 )
# Q" O, J6 S+ f, u( [
[
3 Y% {$ ]7 V* rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 j5 o$ `1 V" z* U1 [3 y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: _& N# q  S" w, a8 m0 f
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- y% T8 ^9 Y' {5 ~9 a: f( y$ W' z
]
& A4 l" Z! S) U6 S( l]* `/ H& ~5 Z* ]* T0 n1 }% K
set global-proportion note; q" A* }4 B1 S0 U) ~
]) k5 E5 C! q6 B5 `' b$ `
end
- O  K  ~3 j4 t( v% K, B4 g: o: p) }2 @  n, y8 i, {6 p7 q  r* B
to do-trade3 C" F0 {8 q* x4 [; G
;;
这个过程实际上是给双方作出评价的过程  h; C, `5 |5 o$ M( E3 v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ g8 Z+ Q1 S) ?  q, l; [+ b# t7 B% mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 o, c5 [  Y2 L; W; F) P
set trade-record-current lput(timer) trade-record-current1 q+ {& v1 |5 h" o( j7 N' H! F$ X
;;
评价时间
+ z' b3 ~& Q& v6 eask myself [& Z9 L; P8 v+ s% C
update-local-reputation! b$ W, B9 `6 R, \# r4 P7 x
set trade-record-current lput([local-reputation] of myself) trade-record-current! k# R# t0 u! r! l: T' i& k- @
]; h7 {6 f6 n1 d, e8 m* M* J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) w. \4 Q+ X+ t$ h;;
将此次交易的记录加入到trade-record-one9 B4 F4 M, `9 W% f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 i- @( x2 Y* n! Z9 Q3 hlet note (item 2 trade-record-current )2 Z" u6 ?% }9 Y  K
set trade-record-current3 [. G3 R8 y- z2 j) d' @
(replace-item 2 trade-record-current (item 3 trade-record-current))

1 V' H* C+ k) O  Cset trade-record-current
1 `- f* ]3 f# o7 m3 W(replace-item 3 trade-record-current note)1 |! G6 I+ J7 @9 r; q- N7 V$ b. |  g

+ ?% x- u3 s: m/ ?5 K& {

1 O. m# f( C, D# s$ K5 _ask customer [
* g! ]  k" l2 Jupdate-local-reputation
5 _& N1 {, e8 }) u; a5 Uset trade-record-current
* d' r! |+ \3 M& d- B, z% Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! Y+ v4 ~9 p' O! \) y3 P: a]
4 j# m% `& ]6 {1 V* B  U! m
0 j2 H6 N0 }# w, @" X6 T

( I) _/ I& D2 ?/ }2 H# rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, U) W2 x, O# Y

$ @  {2 l$ J( y3 G6 uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 z+ [6 G: l+ d9 l) U4 p1 e! r;;
将此次交易的记录加入到customertrade-record-all
! b' {( c0 i5 P7 Z0 ~! \, mend
6 o' A) s, Z! S# h! p# r
- M: H% b* z/ ?  c0 ^to update-local-reputation* |8 A3 J+ K/ c5 Z( Y2 J" H  v
set [trade-record-one-len] of myself length [trade-record-one] of myself
+ M) J: \. U* a6 ?! G7 s* h: d2 J3 ~* s  v( z% a/ L+ Y

6 O5 u1 f' Y9 D3 G" v;;if [trade-record-one-len] of myself > 3

& i$ r1 f2 o; Fupdate-neighbor-total0 x1 S: t, ^7 H, E% E+ ~4 }. f
;;
更新邻居节点的数目,在此进行8 v3 p6 l1 |& J2 J2 B! p
let i 3
: p( _, }$ Z7 N- elet sum-time 0
9 _+ Q; u0 {# Jwhile[i < [trade-record-one-len] of myself]
  P# |# Q/ ~+ h7 z5 \0 t- Z0 E[) F* Z+ G$ n( q* p* r( L6 q1 E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )0 O% H% x: X. B) l! E0 L% w
set i/ T7 \& t/ w) R3 T
( i + 1)
3 Q: M$ w, B9 J& A
]% T; _$ l9 E) a4 [1 [
let j 3& x8 Q1 g/ K' Q6 N* q/ ]- |1 v
let sum-money 0( V( N2 \6 ^( L; W
while[j < [trade-record-one-len] of myself]
2 |3 b8 l% Z' B  I* g5 A[
% X8 N( U3 X" \" O6 S7 Hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 _: |$ E( ]8 o
set j! Q1 T* L) `' w! Y& p( M4 ]# w
( j + 1)

, L! m& u, h  c. Z, ?]
) A- y2 N! ^, h# Q& z5 v7 Ylet k 39 h# Q) _6 W6 H' i! W
let power 0$ {0 a& V9 t% m
let local 0: y9 ^, ~4 l2 P: v
while [k <[trade-record-one-len] of myself]
" C" W; `" ?+ c7 p6 ?3 W9 s[) z. B! J' w3 K" g4 L+ h3 D$ ]
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)
, D6 R" S6 r" l; Mset k (k + 1)
* \0 `) B* o1 C7 n1 U+ a8 X]
* O% f7 Y# z, M; S9 ~5 r$ v8 o: bset [local-reputation] of myself (local)
. H9 A" T1 z) x+ k$ x  q& H0 ^end
: v' T) o# o0 C1 s# Q( n9 w% x, ?- O( x  U+ [
to update-neighbor-total& X, f. w3 k* @, ?5 r7 M

& F8 O! }! h( n$ Gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% }2 A/ v; u$ y8 A- M
8 [6 [( m* ]% o' |6 U4 n5 P

" Q* R# o7 q' a# Eend
/ b* _- e6 ?- K& C
% W0 g+ r+ I4 n9 ^4 j$ O5 v6 cto update-credibility-ijl
7 w9 w' p( a. T2 _, V& p! w7 ?) M; l
;;
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。
3 ~" h7 p- E# [! R6 t- l" }; X% hlet l 0
) u" X4 V8 _; dwhile[ l < people ]
% ?- t# J, d* x5 O/ c;;
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2 \6 }' b8 o2 o% O7 z
[
! H) }$ H% v9 O1 V" [3 zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* c( |8 j) S* L
if (trade-record-one-j-l-len > 3), Y" M+ K' k2 A+ c
[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+ z2 ?; u* A9 Y1 Q2 p: K
let i 3
( y8 e! F+ L# j* \let sum-time 0
; k- \  k+ G" m8 ~. i+ xwhile[i < trade-record-one-len]
0 T% G+ {1 o' x( Y' ~4 ^  ][
3 M6 z  V6 z) ^' {8 b, U& uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* o' z" X4 `$ S# L/ v* w" \
set i
( b1 [. O7 `2 }% r* b6 G% r( i + 1)
; `5 N% _5 o8 A
]
- f5 f  w0 K7 L0 z7 xlet credibility-i-j-l 0
6 V  Q5 i. a: [4 S;;i
评价(jjl的评价)* T* D- k/ t& e- K2 l# G9 z
let j 3
& S: i8 S/ h5 K& N( alet k 41 |8 y' X4 Q, W" l3 l
while[j < trade-record-one-len]
& I* }/ {' M3 [  p) l& G; R[
2 c! J/ b) u8 f1 {8 L# xwhile [((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
; P$ A8 t$ ]: X9 R  ]/ hset 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)' J; z8 j! G( ]4 ~
set j
0 N9 t  i$ ?$ @" A# A( j + 1)
3 s6 ~- w* F3 k& _  f& L% x
]/ ]5 z5 H. b# P6 ^7 y' m
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 ))
# X" F" P! |9 K  ]! h% H& q/ I6 Y3 d9 \/ O1 h6 a9 u1 p. ~

1 x+ X7 E; U  Vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* a9 \5 U, a* a) G/ g3 L;;
及时更新il的评价质量的评价2 D7 J" U' D+ Q' O
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, B, ^1 R3 [6 O9 s+ G' bset l (l + 1)
+ d9 n. ^6 A/ Y! i6 m: p]
+ \. Q( D$ T9 R& w, \; E8 d" X! nend
. c: b5 B) V& u1 f
: F5 O, i' ], R0 i- m! u: `0 O7 pto update-credibility-list7 k4 X/ |2 Q/ ^. w5 P
let i 06 V7 d0 M8 z3 N- N+ p' B' T2 F" f
while[i < people]$ `" c% z5 i/ `5 Q& a
[( Y6 G* u" D1 q* L& M( w
let j 08 [( S) H/ z" F- k6 u& |
let note 0
4 _* t" w, y& f$ f1 Q$ ?) p$ Zlet k 0. ?# @- S2 J- z* v; Q! X$ Z3 S- q8 p
;;
计作出过评价的邻居节点的数目+ V; {6 R4 s  `  f9 x+ G4 L7 |
while[j < people]! Q; f- K5 r; N5 j$ y) T! T3 O
[5 o9 E* p: ]3 `3 U" ]3 `6 H- @
if (item j( [credibility] of turtle (i + 1)) != -1)5 `$ B& v1 O% ]
;;
判断是否给本turtle的评价质量做出过评价的节点
1 [% n9 U! d3 v. f# b- J! Y$ \[set note (note + item j ([credibility]of turtle (i + 1))): k" L9 g) g! ~5 \
;;*(exp (-(people - 2)))/(people - 2))]

  ~/ _/ G9 Q+ fset k (k + 1)4 u* w; K+ Y  m2 {! V
]
4 E* ^+ F: g1 b" i: gset j (j + 1)  N* V! E: F- g" b5 ^
]
; j0 _; T7 y+ d+ g( O4 ^set note (note *(exp (- (1 / k)))/ k)! ?6 ~$ o7 M0 g, @9 G* _
set credibility-list (replace-item i credibility-list note)
/ A5 e. V# Q* B$ a, r/ m+ u- iset i (i + 1)
4 M3 q  `+ D( O' G4 N& E( `0 |]7 V1 S3 F) F! P, u. V6 O
end
4 z9 ~2 ]9 r- O# S2 v1 _" h8 q2 R: `& s
to update-global-reputation-list( L  |1 x6 L6 {5 P1 v
let j 0
3 Y6 y4 F: U+ b1 o4 W7 L% |while[j < people]
8 w! A4 ?/ e0 d/ Q[' t, h  t2 j4 @6 y6 n
let new 0
- O! E9 h/ J- k  H% [;;
暂存新的一个全局声誉
( \/ G! R) e$ R  N: Tlet i 0
! C: v- T2 e! Hlet sum-money 0: r, Z9 G  T* \1 d9 U2 N, K6 o5 Z
let credibility-money 0
! ?5 V6 a# ^% ~- N: dwhile [i < people]' ]( @$ `0 G# Z8 o
[! E: H- h* D: C
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, Y7 M. e7 Z9 X) {0 j4 A: r2 p- _; cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- X3 ]$ b4 D/ H' A' T$ P$ W
set i (i + 1)
  I/ ~* p( j: ^5 c- e]! y* o1 n3 |# b9 Q0 N' W
let k 00 v( F* q. Q1 |; T( C1 M
let new1 0
/ V4 q; V9 d' J$ W& j9 b- Uwhile [k < people]' {# J! Z# n: @
[/ c; H6 [  u  v3 l' M5 @  ~4 r
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)
% t9 S/ f4 D4 ]  i$ W/ tset k (k + 1)5 M2 w1 F  I5 U2 J4 ~
]
! C" \+ \( s4 t; s9 f: Y# N6 rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) C* |- \4 e+ N3 h1 P
set global-reputation-list (replace-item j global-reputation-list new)( l6 g( Q1 s6 \  X* u; ~
set j (j + 1)
  l  O% @7 o& n) m! a]* \4 D; T0 {4 E5 O  A5 J. l/ M1 ^
end1 V% p4 |/ o4 d/ u% b
  `: A: H1 R; e( a7 t# d* L
4 A8 M* q# i, |/ a, V$ q
6 @6 L8 }) x( @2 C9 U
to get-color  l* _6 ~# E) {, z0 O
/ C: L! f( C" ^  a4 @. w5 A5 q
set color blue

0 N6 n. V7 ?; j- k+ ?4 ~! Xend9 q" f: i, N  M5 M) a
# c, ^$ I5 D! k
to poll-class
" q; N( x, d" O) ~. [2 p. D! O) iend+ k% m# O. [. ~0 ?8 t+ S7 s
8 u9 x1 U+ n$ z* ~6 {
to setup-plot1
$ f4 ~' h1 T3 x4 k, J9 i. Q5 C# q. Y/ u% Z8 }
set-current-plot "Trends-of-Local-reputation"
/ o; t2 `0 t% P, V# b( o: @
1 h; p" }6 G; Z; R$ R
set-plot-x-range 0 xmax

- ~# K% `; Z# C4 T& l/ G
0 b, t( ]: W0 w6 R* fset-plot-y-range 0.0 ymax

( Q- F! Y  ]2 p8 Z, w! r! l3 ^end* B6 _2 C. [- w2 r( d# N
% C8 Q6 h+ d. C
to setup-plot2, I6 @" c6 r! V5 Q

: @( R& A' K& U/ j' z% Hset-current-plot "Trends-of-global-reputation"

, o, Q9 @% ]: m( X! M
! L& N8 J) E5 V$ `4 C- _9 |set-plot-x-range 0 xmax
% v7 i& B$ g; d& e# U
( X1 y* J( @1 H+ A
set-plot-y-range 0.0 ymax

2 V" S% h3 z: U: `: g4 @end
( }2 y/ U$ I# Q6 M% R6 W9 b% p( u8 w" c/ D- ?7 f) h' ]
to setup-plot3
+ x3 _% F. ^9 l0 v* r
4 |+ a. Q$ v2 p9 p9 @5 U; Vset-current-plot "Trends-of-credibility"

; ^; n( R7 _! L. H8 a5 q
8 N4 `( I5 Q# n0 a4 t- J3 P" kset-plot-x-range 0 xmax

2 \0 P# q0 l1 j! r" ^9 f( l1 X( G5 C
set-plot-y-range 0.0 ymax

! k% @/ u8 H8 fend( M3 O7 z: [* _4 n. H9 q2 e
; M. W* _7 c$ c- J' N9 t
to do-plots5 e% g! L/ ]9 U9 x( F2 q/ R8 r, j
set-current-plot "Trends-of-Local-reputation"
9 Y. h) j  l; X  Dset-current-plot-pen "Honest service"
, u* Y- E) k$ Gend4 }( a" P' _, x: n: ]
/ [. y$ f# i9 F! ~( N, k9 g
[ 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.
3 }6 }, p! Y4 V8 G# x8 }
; a9 J9 k9 ~! p5 i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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