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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:
  _. ]; U8 L, U; ?* P3 ito do-business ) [# N0 g9 W# f" ^+ y6 ]1 U
rt random 360; y4 |0 B! ?) }  }6 {* P3 l  d; X
fd 1
/ t9 L' J- R; O8 m7 j, w ifelse(other turtles-here != nobody)[) z5 A8 u  u+ {. n0 D
   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.% o& I4 H% J5 P$ f
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 U; L2 @- y0 j: V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 R8 O. M$ _6 W  n+ P4 c2 ]
   set [trade-record-one-len] of self length [trade-record-one] of self
( Q3 }' I, x! l   set trade-record-current( list (timer) (random money-upper-limit))3 g! p. C4 Y% L
- @7 [5 o" }5 F5 e
问题的提示如下:
. }# s% \1 z$ r( A/ y
( n0 r3 T5 h  J! jerror while turtle 50 running OF in procedure DO-BUSINESS
* ^" v! n. `- F0 ^' O& ~; P9 K  called by procedure GO! l0 \7 b1 }4 C6 [6 l: m1 j
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
& [/ [5 K; h9 m3 N
(halted running of go)" I. ?; f  A0 A+ F! Y( G( N% [% ^

: A3 w/ `& \% m+ @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~~6 ]7 W9 B# H, E& L2 H* R  H9 t
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2 h3 n! M+ Z+ @# h
globals[
0 y! `( ]8 k* y/ Axmax
- h7 F' H' @( V: Y  N* X9 Eymax0 O' C2 ?  A* D" y; \* y' j# Q1 ]: R
global-reputation-list3 I8 @# \0 {, o* {1 L1 L) Q

- x& Q# V; L. m4 W4 t, \;;
每一个turtle的全局声誉都存在此LIST
8 h1 [( I" k! j% N8 h$ kcredibility-list+ |! b0 X) ?/ p, h' _
;;
每一个turtle的评价可信度( f& u* ~) I$ q7 c9 U+ G" ?
honest-service  m: w0 u% C  E9 _8 v7 E
unhonest-service; G1 e8 K$ \6 I  P  t$ T# g$ k
oscillation
4 Z! i; G! p( z" E8 ^4 f1 U  arand-dynamic2 ^& h. M! f4 y% {$ ~; g" j* S
]
5 |6 B; Z9 J2 a( D) z! w  E$ K9 t/ {; x  Z/ T4 I
turtles-own[
1 D, U& e7 P& \* V$ q( Strade-record-all
1 q7 ~  U: X2 U4 ]' |;;a list of lists,
trade-record-one组成* s) j2 K- E7 U- {" \% ~+ |
trade-record-one. w3 |: k. o9 Q' E9 s% H; c
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ k+ S3 P+ v1 t
5 P' |( M; @. G( q& M& |" P;;[
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]]
, D9 ^/ }* ]+ }6 W- N) jtrade-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 V( S6 v* \# v  m8 U1 C0 @. K
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
* v5 i% N8 u( p! ?5 hneighbor-total
1 `6 s9 M$ \+ Z* p1 Q2 O;;
记录该turtle的邻居节点的数目* ^! @# Z) m. U( V; w
trade-time
) R, Q- {4 G( m- o9 h' W0 t;;
当前发生交易的turtle的交易时间( {# Y9 d+ @" B
appraise-give
/ Q+ l" @% @0 j3 k+ x, O+ N;;
当前发生交易时给出的评价- L! R$ X6 k& e* r8 Y; o5 U
appraise-receive
6 Q1 Q) v% O9 o5 N;;
当前发生交易时收到的评价* c3 a- ]1 D3 ?) z+ \6 h2 R4 }
appraise-time
; ?0 [4 L# x2 m+ x$ U. W: c; C;;
当前发生交易时的评价时间
& j+ d" w$ f& w7 blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉( X$ Z  V* \3 S) x
trade-times-total
) C0 ^' a2 k# P;;
与当前turtle的交易总次数
; u" E! |3 O9 @$ N3 ~, ]3 Ptrade-money-total
- G5 }7 k3 _9 i! J;;
与当前turtle的交易总金额, u3 y0 S: |7 T$ }
local-reputation
  k& G# d1 H1 B: c; e% yglobal-reputation
: x+ H0 ?3 _  ^6 u" k: L5 ycredibility. l* }4 `3 [+ T+ V' I! E
;;
评价可信度,每次交易后都需要更新
# ~  ?3 s* z3 r: g4 R& dcredibility-all
5 H( ^( h. _& b# O! q;;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8 g9 }- D* w; ^9 Q- G% f

* L. F' [/ k: Y3 B/ L7 M& s+ @;;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0.53 K( ~6 g/ v+ m! y' Z
credibility-one
* F3 Q0 f6 [7 G; M: 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
3 C1 F( r3 y+ A$ `6 rglobal-proportion: n- |, d+ z5 I
customer
5 c0 q/ J' N6 s, E. }" a. s9 Kcustomer-no8 W7 {! Q* I# I  \
trust-ok
( v8 A3 \1 I! P! Rtrade-record-one-len;;trade-record-one的长度
* t% Y/ p' V' A$ e$ w/ ~4 C]% n. c4 @3 z( m# e! W5 `9 F' t3 l4 @
- g/ y% z( s1 |/ J2 N0 ^
;;setup procedure
2 k2 T: j6 n, }' s+ E
: y2 X# ]& M. N0 {to setup) V5 d! A! M( ^+ E
# H0 H6 A; q( w. @8 P
ca
% W0 t" ~1 Y* V1 R. |  k& p

4 m* Z/ d: S! }/ ^" Finitialize-settings

- ~3 d3 p" Y) \. p5 _3 Q$ A. e  b$ j6 p6 ], }/ y
crt people [setup-turtles]
( w% k1 H; w: G7 y

( G( P( ?8 P: freset-timer
& R+ }7 p  n# l  f0 N. m0 r0 T5 {7 w

5 Q* ]! Y0 n& c8 W$ Kpoll-class

& T6 B+ V  Y: n' e! I3 Q0 T; P  U  F( g! _/ o! c' N8 K' G
setup-plots

- ~7 o5 N+ \5 m! O. Y" a3 \* i7 U( s2 V  G2 O- r$ p6 k
do-plots
5 k" {/ f! J( F& K  ~- X6 z, v+ Y
end6 P9 @. L* o# B( t4 e2 D: P7 a% Y% f
8 E- C) D& t1 e5 V1 }
to initialize-settings
8 j1 Q1 R) S3 f7 S. ^
' K; [2 D& I# q, Eset global-reputation-list []

& t: i9 {0 n7 L7 i$ C! Y# D% T5 B) e/ k# |6 L$ s) R' s/ O
set credibility-list n-values people [0.5]

# U9 g! o1 R% j, q5 w+ z2 L7 I' i
' I& }4 w6 F2 v' Wset honest-service 0

4 O5 N; j0 ]# O8 M" N4 [  e$ Y' q  @4 e3 J- A+ Z, @
set unhonest-service 0
6 |+ e. \1 h- V; o3 S7 q/ f- A1 D
, {. ?0 ]. [8 u" w
set oscillation 0

+ J: i2 K8 D' U7 [, y2 @% F: I+ {* i8 O. U- Y. c
set rand-dynamic 0
& S- c- w9 d7 ?, |
end
3 j% o, R& I6 b; x) }# |, y+ ~) a- y; K( ^/ j; C# J- ~1 g
to setup-turtles , Z; S  H+ N* w* x' M. D
set shape "person"
# U; v8 G+ F* k7 o3 e9 X* P* o6 ~setxy random-xcor random-ycor8 ]! Y0 Z* Q5 u0 ], V
set trade-record-one []
: Y: R: D' F& O  ^* Q" U$ @

+ Q) r3 u8 D0 Tset trade-record-all n-values people [(list (? + 1) 0 0)] ! o9 E/ F2 w' H; k  \2 U4 V
5 f/ Z" a3 J/ ~' S
set trade-record-current []
& K) N2 v5 ~% \7 p! Lset credibility-receive []2 b' ?0 S! v, h2 k* J% k
set local-reputation 0.53 E; L4 f$ D! q' K+ _
set neighbor-total 0
# G3 V1 |! B! ]set trade-times-total 0
* P( n5 A) o* Q: }3 X& N4 @set trade-money-total 03 }* s2 [! ?8 Z/ B
set customer nobody
7 C0 c1 k2 ~! n# S0 qset credibility-all n-values people [creat-credibility]
5 [2 d1 n! w4 k' Fset credibility n-values people [-1]& X- B5 G7 v$ w: M9 z: Q) R' i  E
get-color) l% \' S) i) n4 C9 X

9 H8 M& E! m$ y6 t, c$ }% rend( v6 W: S8 e8 r+ A
+ M; }0 o2 W( h8 @, {) W! p
to-report creat-credibility8 I/ K. \2 T% h2 H
report n-values people [0.5]) R& s; n4 d( h& Q& V
end
0 X6 [! e5 h' ~( v' m+ _2 i
, s( }3 r& w" x7 s& Nto setup-plots, d$ T  `# E, P

6 n! |( i# c6 ^3 Iset xmax 30

8 k. Y" E' ^6 p; D  C( ]" J4 W* F7 _, c, j) @3 x
set ymax 1.0

2 B5 h: q6 W! z# [7 {  l+ o
9 V2 q( p9 V/ a- Vclear-all-plots

( o4 d, ?7 I4 p6 d+ W) U8 K% I2 E4 N  q3 n
setup-plot1
1 \' \( C$ m/ h6 ]7 W
3 p; \3 N/ o( m+ F' A! v. ]
setup-plot2

6 U4 {+ N3 t  Y) V9 F# |' E1 Z1 L5 r( K. Z: I8 u
setup-plot3

* d5 Q) `2 Z/ T/ B" B  C7 [end
& J7 m$ O  D( ?% c6 Q1 @! c# g# l8 Z3 l2 z' f
;;run time procedures
/ P/ K1 N9 B; y
8 Q- l. }" _, bto go
2 r+ J4 i" |8 I' a& X$ \
3 K( M& O3 N) e# @- A+ Gask turtles [do-business]
# J) U; ^( @( I  C+ F0 c0 T
end
0 w( f6 C, ?* v) `9 e& c- R! ~. S; P
" k, }  v* C; J0 B" Wto do-business
! p; H: S* A) ~. E8 d

1 A# P. J7 @9 F* D" ?8 o3 C5 D3 x6 M
rt random 360

7 S( i! ~# ?, v" Z2 N
3 l7 x9 n8 E% W2 s" Bfd 1

' Z) w' w6 u. }, \! K# n; }  x( c5 q% t9 r$ |
ifelse(other turtles-here != nobody)[
3 i4 [9 _% R: l: r
! R  Y' g! V5 `
set customer one-of other turtles-here

. {4 B6 R1 ]6 r" B; Z5 v6 G# d% W' Y- A( B, @
;; set [customer] of customer myself
! o4 `% s# `, H
! ^$ \2 a- E8 q$ Z4 A3 J) o! `% ]2 }
set [trade-record-one] of self item (([who] of customer) - 1)* s& z* T- a4 t) E. N2 v/ s
[trade-record-all]of self
) E# X' x* H) Q& D* a8 R- M" k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 S* g. {/ L% Q/ p  u: q
. ^- c; e# n& m3 \. X8 K# Lset [trade-record-one] of customer item (([who] of self) - 1)! P: b4 E, V; v
[trade-record-all]of customer
+ T* G9 H9 G! ], l3 p
: C7 K8 G* s9 @4 x7 E4 V9 M' v" v  _
set [trade-record-one-len] of self length [trade-record-one] of self
+ T5 I9 O7 ?# u" t$ L9 N! g

% ~- U1 s7 L! b( Vset trade-record-current( list (timer) (random money-upper-limit))
: l* F. J# [% ?$ C* ~+ Z
/ Q. p& o3 `# Q+ D2 j$ R0 U4 w+ h2 D
ask self [do-trust]
' `5 c+ c/ b$ b% Z, L: f$ X;;
先求ij的信任度9 n) w- r3 i1 g9 B
6 k/ ~+ G$ i( c; w: a
if ([trust-ok] of self)
) F2 n  L! f& P+ m;;
根据ij的信任度来决定是否与j进行交易[" H4 N  P5 o- R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, y/ U$ [* {1 c$ c) {7 W" ^5 ?$ |9 A! i8 I
[

  ~1 ^/ e! c# J& W& n$ D* y
1 M' Y9 r* Z' S! [' p# sdo-trade
# Q8 B* I+ I! g- t* g& x

1 \* `. g$ U, Q% }7 A5 h6 K6 q; Iupdate-credibility-ijl
. D: P& u, S" I! j2 c2 Q; S

4 k( m1 D, `0 \- Hupdate-credibility-list
* g/ J5 @% G2 v. k. ~
. z. h6 ?- H6 x6 B7 a5 L1 S! N5 D
! a. |4 X5 o9 R9 ?. c: I; z
update-global-reputation-list

% a7 F! K& ?# Y: v+ s% S' P$ j+ d! v8 A' D% h2 Y8 |
poll-class

( k7 L) A5 J; {3 f
" P% V: m0 ?6 b$ Jget-color
) L/ {* [6 l0 l" C% o
7 o4 W3 c7 s! F8 M
]], c6 c8 I3 b9 a) E1 o6 c

" ?7 D) V) E8 T+ b2 m, J. Q;;
如果所得的信任度满足条件,则进行交易
9 O5 X9 q0 B: s2 I! ~$ k6 [7 Q. h% }* m4 H* f5 p
[
) I# {! T8 K+ ^1 j

) R7 g( Q  f; b& M' Z+ nrt random 360

4 {8 c' f9 d6 Y  I; {9 `# Z+ A  W4 d& H) S  T) I1 Y, y( a' n
fd 1

: }! n1 y8 V  Y  H2 Q3 N# Z) P5 L( ?1 G9 A0 `1 Y" ~5 m& l0 N: S( [
]

) i" Y9 s2 e% Q/ K9 _* k* M0 o( \' s, g! W
end

' y; h* e! w* S9 P6 J7 `% P$ }
5 w2 T/ Y! w& k. i# |6 _to do-trust 9 R* a9 ]; B: ~1 G, K0 ]
set trust-ok False
1 C) P: ?2 v9 W3 h# }5 J6 l% s% a4 H* c/ g% y
! L8 a7 G7 Y- B6 Z
let max-trade-times 0; J4 ]6 V2 D2 X. J) p
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 z4 X- Y) a% Q; p: @
let max-trade-money 03 _/ w+ @# P$ i! c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- e( ?$ }! u' k9 L% m; k0 D/ m' B
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: {8 ]) r  _2 M9 H
$ w( r' N# Z8 `9 M9 w+ {9 }
2 [) p2 p0 [( }
get-global-proportion) _% T! ^: D! W7 k* T1 A1 T& g5 }
let trust-value8 k, p2 y  F" P  w5 U$ }
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)
2 C+ Y$ |. C/ K8 O
if(trust-value > trade-trust-value)
1 r( n3 ^  K- z  B[set trust-ok true]$ t5 E, I0 O2 X
end
: ^& u. t, W" b% }# h* ]; a1 V! u4 v+ g$ _
to get-global-proportion7 i) z# K& ?/ {+ S' {+ y0 D
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( C6 w2 F$ f" O- z9 E2 Y! b2 P
[set global-proportion 0]
9 m+ }# a; v/ S1 x, G' k# g; R! E[let i 0% Z4 ]% |0 s. [0 ~0 G
let sum-money 08 g" L6 F% w; V4 y% E: d) \
while[ i < people]
$ n5 x1 f( E6 B$ G, X. E! N+ Q[
7 O1 P0 u2 B" L6 q, l; _if( length (item i
7 x( A6 {  a: @4 S[trade-record-all] of customer) > 3 )
0 r. I- @+ s0 a1 F/ N" o8 T' q* X) X
[
4 n: j$ ^8 B  N0 \set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 Y0 o# j  A( W
]  f, E' l; e. |& S" \
]1 b" c. p$ \5 l
let j 0
4 J* |+ t. J& g& m  R  Dlet note 0/ }( Z1 m2 K. Z" x4 D! P
while[ j < people]
7 \7 @# h. q, m0 j[
- W- [7 N. k! q7 t$ hif( length (item i0 m8 Y4 j& H0 \+ d. b4 N( v5 l- Y
[trade-record-all] of customer) > 3 )
9 R; `" l7 \" y, D; I7 K
[; t* A; M( a; ]. f5 K; p
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" [* ~5 x& l& Y0 M. Y( j! u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% n9 i& B/ Q( I, E( f/ p7 n) V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* z& J1 p3 |) g2 g5 w7 [6 ^
]5 k1 p9 o" B% V* i7 i/ }1 n% V% E# l
]2 H; {; _; z- y1 ~* i
set global-proportion note
# E6 ~( l% n9 ]$ J1 `$ k: F]3 V: V4 p# p  y5 o" x1 ?
end
( V3 u& h" c3 A# s- n* q
4 f1 Z+ {: J9 y0 }to do-trade
+ s: V& t* n! m& p# r' e;;
这个过程实际上是给双方作出评价的过程9 w& s+ x5 ?+ ]7 t2 Y) B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 E. t7 W. e$ d7 Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 O* q4 O6 e, D- S2 K3 sset trade-record-current lput(timer) trade-record-current' U" b6 y3 R. u1 C& z3 B# L
;;
评价时间
) d6 Y# [; i' g! U! [0 W) hask myself [% c& X' S5 p; \6 Q
update-local-reputation
; x7 K& |* `" iset trade-record-current lput([local-reputation] of myself) trade-record-current
, e+ C5 ^5 |/ k) t6 e]
" t/ n* ~, V: y% L/ Q: j# @  Nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! H$ F/ k; c: o) x" B9 f4 \
;;
将此次交易的记录加入到trade-record-one
7 H: S: Z; E0 g, |9 s. l/ K; Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 e* _4 k$ W  r- k/ e
let note (item 2 trade-record-current )
  m7 l9 ~( M" X8 o& K: b0 Z! Pset trade-record-current
, I3 B* ?! V2 Z( f$ V(replace-item 2 trade-record-current (item 3 trade-record-current))

. H, w- o8 A5 r6 a' _9 e( Vset trade-record-current
7 k0 |9 P% C8 L3 Y/ t- W(replace-item 3 trade-record-current note)3 R3 t6 Y* w, F5 Z, i

2 O7 \3 o6 ~7 h) T

: U- U' F+ {7 iask customer [4 B! d2 s- `- N3 G* Y  m
update-local-reputation& f8 C7 R- u$ t5 W9 v# j. l4 _
set trade-record-current4 y) Z. w- @& `5 M
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- E! v0 q% E: t4 w! Q0 m
]8 o7 P* N' i  s4 ?

3 x# B9 J# [3 @( H" `/ k3 {
2 {* y+ a9 P3 j, l9 D# _  O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% ?0 V  u8 }+ O
6 e1 i1 F: @$ N
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 `8 e$ @. D  _+ D  d7 f8 S; _+ {;;
将此次交易的记录加入到customertrade-record-all
/ T0 I& `5 v; [6 G7 pend
4 L4 Y6 g8 E1 N. _, L2 c/ Q* i4 g: t( k: i3 w! q- I6 {" N
to update-local-reputation) q7 }+ S. i" W0 B1 C# f1 c
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 E  K, c! G3 t9 p/ d' P& O9 V% U
% @  ?& z% [) }. W6 u
$ q7 R" V0 G" s$ ?# l0 _' D4 [0 e;;if [trade-record-one-len] of myself > 3

8 F8 ]& N, z" f. n: o& _update-neighbor-total
& i( ^* ?1 e4 m- r: L) X;;
更新邻居节点的数目,在此进行1 n# K$ w# I2 z, B1 o5 Y) k9 u
let i 3
5 j. N: ]5 ?& W$ n' Xlet sum-time 05 ~7 F$ c$ Z1 \1 w' \- j# s, U
while[i < [trade-record-one-len] of myself]' J% ]) a" [$ O# Q9 F" n
[4 C- W0 \7 b3 O* O5 n6 n8 Q" E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, m& S2 z5 s$ V( S+ J0 k9 zset i! _% `  u# A; e7 U' v9 Z5 H# F
( i + 1)
/ N2 g- A% T' ^. |
]
4 u! Q0 n( A; M* Zlet j 3
% S# Q* b( h, c3 mlet sum-money 0) s+ N5 j% ~6 f7 q8 \+ S
while[j < [trade-record-one-len] of myself]& a) B' ^: A/ p% P. O2 {
[
. }& l3 L6 W' e  U5 P/ Lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)3 C; @0 t$ _5 A4 i
set j5 a7 z5 m8 A0 p2 r9 w
( j + 1)

; [( `6 [4 A# V, x0 w! u4 @]8 s; Z# i* x, r8 G
let k 32 L& A2 V# o4 ?% a1 c) [
let power 0
2 t( s! I- o, n7 r+ R9 `* ^/ plet local 02 ]/ D& _- S+ T2 Q7 u6 e6 S
while [k <[trade-record-one-len] of myself]
$ G' A4 a9 ]# ]3 y4 e' q& y1 \! a[) z) l7 ^4 V. e( z/ N  O
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)
$ g( ~& m. T9 ]) C* }+ a9 N/ \set k (k + 1)  l: n0 O; ?! g% t
]
3 T5 b8 p% X  u0 V3 d6 gset [local-reputation] of myself (local)
9 p: @, @9 y% @, d. X% A% U# S8 rend/ A( V- y( U5 S, c. P0 G

" _& s! C* f0 |& @" o, Eto update-neighbor-total) ~! F4 R8 v6 I" J
3 M: g$ r8 L1 p+ v8 t
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 C; M  |7 K2 n# i3 x
% i! k+ i$ h2 E' L7 _& V

. A# f+ R, P5 \! Y! S3 send
- Z+ W( i' G, i# C) `
$ x- x/ q) i& A& n! A$ Y) oto update-credibility-ijl   d2 A9 I3 c0 v9 D
; c2 f+ M0 z; s/ J0 @
;;
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。
: {/ ~. r3 |9 j* z6 y7 L6 K0 w( u3 Klet l 0
# a( Y+ p3 r& O6 w2 Ywhile[ l < people ]
# r; ]( {% }- ~# U! ?* F; P3 }0 q: m;;
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* }: l( g2 S8 a, g* x. r
[3 ^8 S! E4 l# f4 F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 X* `  ^4 T( M3 L% Dif (trade-record-one-j-l-len > 3)
* x4 X8 c. p4 }[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
9 o- \8 f; w1 C: |7 b6 @9 flet i 3* U" K7 K* _1 S5 n' D
let sum-time 0
' f$ ^7 V1 p/ v( Dwhile[i < trade-record-one-len]4 o- G( z% `0 y
[
6 I$ h" U8 y, L9 pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 \; g0 y4 V! @* \* g; g* }
set i
# g2 _: u: i# J+ ^9 E( i + 1)
! v1 q1 W; M; f* O/ F
]
% j/ I3 I; p! u& zlet credibility-i-j-l 0
1 Z. o: l, x1 x# E9 w8 w! H& M& G7 u;;i
评价(jjl的评价)
. W' M: b  a3 V3 K1 `% Alet j 38 D; O$ f  k( l9 ?; K9 t
let k 4
! H9 r9 x" l( c4 a; h# fwhile[j < trade-record-one-len]4 h, q  z. D6 Y
[
" x: s5 q# j# y% P) wwhile [((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 u5 }& ^. u; V. Y' ]- |9 ]
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)
' v2 t1 e# u( f) G7 sset j
/ t9 h3 Y- L1 R; S( j + 1)

3 {3 c, u8 u4 P]. l1 L. c2 F, x2 K- \& M/ K
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 ))
" V" D$ s& O& }+ W) g8 j# K
8 {% Q5 p" I. `& p

6 W' G8 V$ v' b5 A; jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), u4 R* m+ K% i+ G1 ?, C- l; N2 O6 `
;;
及时更新il的评价质量的评价
* d2 G% c. n1 Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% y# Z* N4 d4 H0 N
set l (l + 1)
3 c- @* \6 y6 b' u# R' y" q]/ w9 V1 z6 {  z4 g
end
5 i1 Z* s5 i. o3 ~: f5 w
: E& {7 d7 e5 K' F, D. w, kto update-credibility-list0 r* P+ K7 Z, K: M* g( ~
let i 0
7 B$ `) B- j5 `1 ~4 Zwhile[i < people]
! }# m' a2 x; t+ h[: g+ Z  E8 B' D' m
let j 0) j4 K3 M% f# E) v' T. j
let note 0
. A  F% c9 ^9 L. s2 d. klet k 08 k, j% x2 {3 a8 J# p* C
;;
计作出过评价的邻居节点的数目
% ^. ?5 r/ }+ Y7 x  a1 \7 _3 \while[j < people]% d" h1 r/ z& o6 ^
[! L4 L  Q3 q* A: _( h* u
if (item j( [credibility] of turtle (i + 1)) != -1)
+ R; b7 q0 j8 @4 B! X* J, i;;
判断是否给本turtle的评价质量做出过评价的节点
, g( H# g0 k1 F  p9 C[set note (note + item j ([credibility]of turtle (i + 1)))1 k$ }; R+ ^; y% Y: {5 W) l
;;*(exp (-(people - 2)))/(people - 2))]
4 q2 k/ {0 s9 }+ _9 B
set k (k + 1)
2 ~1 w: s" b9 Y0 p: f  ?, J* I7 f  j]
) y9 U3 R! }9 D/ n. ~: ~7 Lset j (j + 1)
2 q& v& F: v: Z% ?- N+ z- u( U]; i) [1 D! D: y
set note (note *(exp (- (1 / k)))/ k)8 m4 o3 V9 x, ~$ y/ r
set credibility-list (replace-item i credibility-list note)
3 H8 F6 i: I9 L, `+ T7 T6 M: Vset i (i + 1)0 b0 c- J9 Q) k; n- D
]
; Z: L, d/ f/ p3 pend8 z6 p9 V/ x: U5 t

3 H3 `+ D) }3 [8 m- E2 {to update-global-reputation-list  r. m$ f% s& h! f
let j 0" d4 C+ ]5 L$ Q4 M1 @
while[j < people]
! ?: R+ a3 e% u) Z[
# l) T' P; E' Q6 U/ T- |let new 0
, J" `1 q3 S* ^9 Q9 v7 |;;
暂存新的一个全局声誉
7 v. U* x( w8 ]( h; dlet i 0( }& ]* Z: _+ X) F
let sum-money 09 r9 u2 L; s# {* k; S  {
let credibility-money 0
) y4 h! t. N" X% `. i9 r$ B: awhile [i < people]7 `; S- I$ F" a3 G+ E
[  T& b* b* Y+ j; n0 T
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 G; D( g/ [( I6 a# X4 z0 Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# i3 z* a5 Z: t2 [0 ~
set i (i + 1)
0 K; M3 K5 _9 T6 E$ I1 G4 g]2 e4 ^- L+ B* L5 w  s: b
let k 00 s' q$ V: B% }6 H* I
let new1 0
$ F% F; V# j2 uwhile [k < people]
( y9 J, k0 X! y. M. K% Q2 G: r) u! r[" V1 c- T/ A2 m  A( n* X% F
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)6 H. B& A4 X6 W: Q/ k  S, g
set k (k + 1)
6 ]; \" N0 E+ F7 X/ B4 s& E% f]
. C* y, u. T: N4 M" {' i! D  S1 W: ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 F/ M* g* T: l) P- R) s, d* X6 c
set global-reputation-list (replace-item j global-reputation-list new)" G! {- c. b/ q; ?; b9 B
set j (j + 1)- T& L9 M# b7 {7 h
]
! d& u" g) |9 B( J' s0 s" Z. |+ F1 cend
2 i9 u, |, C' n5 h8 M! Q. U: y6 Y

- p5 y* w& l# O' p; H( Y9 K" `; V' I6 E# Q8 A& W: k. e
to get-color4 @! S' b( x/ j* K) S! P

! p/ X" s& {. R  K, ]# pset color blue

7 W) w" A" q* l! wend( w/ F  t+ j- B5 R3 t, A! {, b) q( \

+ J% x" X9 _$ g0 Z. c! {/ ?to poll-class
! b8 J0 U* Q; T. wend
$ ?& B9 W# @, m* c$ {! X; `4 M! `2 U5 N* `
to setup-plot10 N8 q7 P. Y+ t" N

& X- E' a! f: ~$ P: c; Mset-current-plot "Trends-of-Local-reputation"
' O, u/ n4 Z" M3 [1 O4 K
' n7 \% I+ r* l& C- Z
set-plot-x-range 0 xmax

* h0 P+ |! W$ X; w! X- f# l0 f8 X
/ Q3 D' f% _5 p9 C# ^set-plot-y-range 0.0 ymax

! g. e; Z, Q4 E* T$ l1 yend
- M+ I6 I6 y- k0 e3 @0 r) K: G4 Y, F
to setup-plot2& |5 X# m' [$ z2 R+ t
. S0 ^  o/ U- D3 h
set-current-plot "Trends-of-global-reputation"
) f" \4 {; D' ~/ z3 E- i0 m$ P% U

; J- |% j0 _' c* N+ r6 ^" F3 p6 @set-plot-x-range 0 xmax

% y6 W) J) D* s: `+ e: m5 W4 W1 O9 V# S8 a) u
set-plot-y-range 0.0 ymax

& M! T9 B  r, R4 L' e% [end
+ [# l- ]0 T  Y" X8 |! s7 E7 r; l* G6 G
to setup-plot3, @$ b$ W% O$ J0 ]. e0 L
* c0 W7 |/ v  L6 C( x% D
set-current-plot "Trends-of-credibility"
; t3 V1 v, m9 M& h, r

  u* u& T2 S& L0 X. gset-plot-x-range 0 xmax
$ v$ Z: w9 b8 S1 m- x  {
5 b% e# {9 X# q, `. F
set-plot-y-range 0.0 ymax

% w0 ]8 [( q  _4 G9 S; P& C% J/ Zend
0 y6 d7 j! t; N
! |! K9 [9 h4 Q* f) C* k! b8 `to do-plots  y# U7 l, c% X" i  X* {* y5 j: \
set-current-plot "Trends-of-Local-reputation"
! U, o# S1 B7 N: g% ]+ wset-current-plot-pen "Honest service"  x: m6 ]& H# h6 H# ?
end) k* r1 b' _, w% C7 r

( q1 U  P" \: ^  u1 A' l  U( K! J8 d[ 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.
' |- J+ |* A# F; X8 ]! H/ j1 H* \3 U& I. Q* P9 o2 N
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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