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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:
; @7 ]# L2 t+ o: g3 W6 L7 V% J# eto do-business
2 P$ W! [5 Y9 n  j rt random 3600 q  o( r) V% e9 o. R2 g
fd 1- g' H  f1 `# M" M
ifelse(other turtles-here != nobody)[$ U, T* j1 g- {: N, U
   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.
7 P9 d3 z! j( d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& m5 e- D" T8 U+ E! \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  u3 m' A" v" h5 i9 g" F: i* m   set [trade-record-one-len] of self length [trade-record-one] of self' k& y! |1 B! K  H  F' t
   set trade-record-current( list (timer) (random money-upper-limit))
, v8 o" M/ e" E, V; C2 Q+ a& S! h1 N' E9 u$ z# W' H) t
问题的提示如下:+ n/ w; W! {/ F/ }; L

, l5 E) g9 S6 I7 \+ q" Derror while turtle 50 running OF in procedure DO-BUSINESS# E+ G) I( u( Y
  called by procedure GO
7 f4 K# l5 k( b  ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 y7 s* |/ p9 K, ^1 ]8 e. U
(halted running of go)! E5 A; {8 k5 o! m

8 q# K6 t5 \' X8 C这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
1 j9 y0 u3 z! z. b) I1 I& {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
) X1 q, W3 w% [9 Z% l, |$ @; D5 Bglobals[% O/ ~& e- D7 q! `' L
xmax
* d1 k% i0 L. i9 S7 `8 w# T  Hymax) Z0 V! `& b/ K
global-reputation-list
  ]: u6 _  e: a6 z( h0 C+ L
' F$ N7 |# r! X# J2 p;;
每一个turtle的全局声誉都存在此LIST
& D% I6 B  w$ h) [  {credibility-list6 p, S" C1 G) d0 Z  L. U
;;
每一个turtle的评价可信度9 ]* d3 m# d8 Y' O1 C# K
honest-service9 |: b8 _$ b! P0 N9 J# n
unhonest-service: L1 B# ^. I& n" s) \; f# ?4 ^
oscillation# s( J/ T- S& V- L; C6 A
rand-dynamic3 R; j6 R- {. Z+ o. ~, G
]
8 M# K' y) ?! Y
* a& _  t3 N" Z+ V+ J3 dturtles-own[" e* ]/ b" G# L7 P4 v% E+ ~! L
trade-record-all9 F) I* R5 d9 S' M
;;a list of lists,
trade-record-one组成
  S  i7 T9 g6 f* w! O% xtrade-record-one( K& A: T8 n6 M# z; 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
" x! c1 k  }" v+ n* ^  K/ h5 g# u7 D
4 V7 j4 Y  Z- b* {4 J9 E. D;;[
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]]
- W) ?1 q8 T+ X) `+ xtrade-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]& C$ \7 P% D1 O' }; ^
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: [* `) k. z" l$ k  E
neighbor-total
7 r2 [0 o/ j8 P6 r5 E;;
记录该turtle的邻居节点的数目% F; }2 Z; c5 n2 G1 D
trade-time5 a3 |6 I: Z7 L+ X5 _6 g
;;
当前发生交易的turtle的交易时间
7 r: L- A2 ~( s6 C' ?% }6 Yappraise-give$ K" V2 y2 G0 t- r1 P5 m8 j3 Q& B. |
;;
当前发生交易时给出的评价
3 q) q) u# B: g1 f" F/ cappraise-receive
& e; Q2 D5 s0 W2 h;;
当前发生交易时收到的评价
4 }, ?2 g/ u" }- S" D/ iappraise-time0 y7 T8 |0 c7 @! K# \- |
;;
当前发生交易时的评价时间& ?0 z, P! Z* D7 ~6 {" e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' q! K7 p! X. c, {6 ?
trade-times-total
* X. x1 f) l/ N& T;;
与当前turtle的交易总次数- j8 r/ j/ G" P: i7 q
trade-money-total3 b  i8 r4 T3 T" v% ?' [) m
;;
与当前turtle的交易总金额& }% u4 Y  I% `5 i: ?. G
local-reputation
! Q6 J4 F; p" [" P% S2 e; X8 N) Uglobal-reputation
& k0 u/ e& f( }7 v( ~5 A/ Ycredibility2 [. [) D2 @: B9 P
;;
评价可信度,每次交易后都需要更新0 R) V- R2 w5 y4 X: ?; ^
credibility-all% {* E! @4 J1 q1 |
;;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 c. d( ]1 W0 K& X' E7 S. Z( h
) I7 t0 x+ @  C8 h
;;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* p3 @0 Q  L. i7 j- h
credibility-one5 a5 R* t. ^0 K! y5 k! b
;;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& ?: Z0 n- e# m$ B) q
global-proportion0 Z3 w% k( L# E# c
customer2 q# S) d+ \% @8 n+ S* V
customer-no9 Z7 {  i- @  ?/ @; ~
trust-ok( F2 b( z4 T7 w! B; o
trade-record-one-len;;trade-record-one的长度
/ C" A+ B- i4 O( Q" m% F+ m]
/ B6 f# l2 B% z4 j
& h5 Z: ~" U5 u$ l3 V/ e! k! I9 C;;setup procedure* L  n/ N' n9 Y( j1 l1 V! y

! \" R* g% K) ?, e2 uto setup% V8 J. L6 {3 G- t% h5 ?
) p- z! y5 D2 g
ca

. F; W2 |  B# \5 d! E* N+ Z4 ^3 I
initialize-settings

, h( r* o, y6 g! l% k
* i' ?' n, O- X7 N6 kcrt people [setup-turtles]
5 H5 N" {+ @  Q( K$ G7 t
7 ]- O# W, N& J3 j! v: a
reset-timer

( \+ u4 B+ E' I% L" ]; r; w7 c) H4 b9 C' t
poll-class
& R4 Y2 n, j* P5 r1 _. t
# z5 N# O- H- w3 k: W% A& n
setup-plots

+ r8 U8 i' ]7 G- O8 T2 [/ e' Q
; M  x5 V, ]% a# zdo-plots
: C* w" Z: H* P9 n
end
6 F0 r, o( f9 S1 J3 ?* ~
& Z. y9 x* Z6 M( Z" B  zto initialize-settings
' b& m9 \1 {. I, s8 z$ j7 g0 F
6 \: F: k2 H( p9 \& c  [set global-reputation-list []
& c9 {: r3 f3 D4 j" k' v

. x+ H' k# L: E& m7 _: p0 I2 uset credibility-list n-values people [0.5]

% M6 V/ Z, ?4 O4 v& k. t
$ m5 q/ r- b8 k, ?set honest-service 0
% ?5 A8 V6 e! |# x3 F- ]7 V0 K

8 s2 r# J6 N- B0 ^/ yset unhonest-service 0

4 {: U( v/ _3 M& i% B: u! b. Z9 `2 f8 h* q) ]( a
set oscillation 0
$ S5 C  E! L7 g/ F9 a: D
& B9 A/ d# s1 n" q
set rand-dynamic 0
& v; F1 M, B  ]! [
end  L6 o( t/ a' {' N
# i$ W$ P( i) e/ O5 y9 C2 T7 _
to setup-turtles
* a# W8 Q& ?' rset shape "person"# D- B' f% U$ X, o4 T" q, G+ V
setxy random-xcor random-ycor
9 c- F, ?0 N! sset trade-record-one []
' z+ _. T) j* r8 P9 n' A: E
* J4 F/ @4 d( ?. ^% s& i$ v4 F+ G" D
set trade-record-all n-values people [(list (? + 1) 0 0)] / M  g2 s! i0 _! Y

& \- A# w7 S# ]% ?set trade-record-current []+ t! Q/ g1 N0 d! W7 s; L
set credibility-receive []
# c9 ^7 h: p5 m0 `3 v! d2 i# vset local-reputation 0.5
5 L' Y$ G+ z3 k- n' fset neighbor-total 06 O- W/ n2 y" C; x  e2 h
set trade-times-total 0" u) n- D" e, Q) A$ R& ?* p, o) }
set trade-money-total 0
5 I5 l3 W7 C% @* U- _+ h0 m2 y) s: Tset customer nobody; b# `- x" B/ k  ?2 M) I
set credibility-all n-values people [creat-credibility]
* D, x& @' z7 T  T* `) R* u- b/ Sset credibility n-values people [-1]5 T+ [% w2 Z2 F$ n% L# b! q
get-color0 K% G! k8 E) @  L2 ]
3 X6 |9 X5 h) s; r' p
end  m2 ?0 ]) f- l- O
% Y) M  v0 ?' ?9 {; Z
to-report creat-credibility6 m- w* P0 j% L% x
report n-values people [0.5]
- e! K) U8 B- }# u( D/ Zend/ N. g- [1 l8 ]2 q, ~( n0 T) h

# k  u7 v( ]  U! kto setup-plots
" ]+ R1 N4 w) t9 w8 Z4 I: c9 ^, T' h# Y7 p
set xmax 30

. r2 @( T0 d4 w- }& d2 @1 T/ U$ ]  c) Z! h! h% q
set ymax 1.0

3 z' h, d7 X4 S4 \# h0 q' A5 a' \. Z' q5 I6 Y
clear-all-plots

" o( K5 z$ C. [0 Z) C$ h! ~
5 z6 W6 c0 R# V& K+ Msetup-plot1
" t; e/ N: w# l. X! T, B0 ?

' A: H0 F6 r! O# isetup-plot2

* f+ G' A- Z! m
2 c( b0 r& u! H% r; lsetup-plot3
, Z5 m& S3 G. E- B8 S
end
6 G' `8 P* Z) w& ~. ~
' E2 Y$ U9 S+ P# B/ p! P;;run time procedures' o& O0 {+ h: c# [, J* p

# G1 s$ ?8 a. S' R3 U) Lto go
3 t: R/ n; l2 J5 n  N* H9 D/ ^
! a8 s3 P5 ~, r8 k* U# nask turtles [do-business]

+ }2 a7 w. v4 \: D0 dend
) B7 O2 P2 {  @7 W% R1 ^( y/ s  O/ w$ m' [  a9 x
to do-business . k4 x; u+ V6 E; r+ f: h
( P. u6 y" ?5 k: ^7 v5 E! ^
4 ~$ {( Q; p" {+ ?+ d
rt random 360

0 ?- ], d8 T5 z% K8 e* o" }9 G8 Q3 @; Y* _' V7 L" Z% A
fd 1
- T5 Q9 h3 b) M1 }! a9 @

( ~% L9 g5 h# z' S" Wifelse(other turtles-here != nobody)[

/ [% X- R9 A% x% t; Y! }
5 ]- j8 b2 H, mset customer one-of other turtles-here

1 t9 G: o1 O- n6 U: F" ^! E! d
2 X7 _; T: C1 E& T# U/ C* u;; set [customer] of customer myself
4 i- `$ R+ z. g/ r$ K& X3 H

: J$ o' A/ K; Y$ Lset [trade-record-one] of self item (([who] of customer) - 1). P- W3 A0 q, x) D9 H3 ?  c
[trade-record-all]of self
2 a( g0 a' c" _- {8 p0 V: W3 M. N;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- j6 A2 p- ~4 @8 C' a
- z. c, w* H/ W/ ?: Iset [trade-record-one] of customer item (([who] of self) - 1)
8 d4 i4 D6 k- {/ H  i[trade-record-all]of customer
* U- ]/ `3 J/ M7 _$ @

1 a! `) f- o8 D3 B8 w) ]set [trade-record-one-len] of self length [trade-record-one] of self
! \7 C2 d! U- j2 h) O% e0 F  Y

1 s7 {& U$ J) ~4 g* iset trade-record-current( list (timer) (random money-upper-limit))
$ D2 b% ~1 k& K2 V7 L: H: H

/ r$ K1 P' s' T1 hask self [do-trust]
: ~, O6 n* w5 e5 B$ ?;;
先求ij的信任度
4 F$ U" N* Y) }3 I, J+ h) ^8 C3 A! S+ _7 i7 q
+ Z* K1 P) ]0 D* C/ \if ([trust-ok] of self)% f, ]4 c8 a* i0 u( b0 y+ K6 ]
;;
根据ij的信任度来决定是否与j进行交易[
9 ?; k  j% [4 m6 {. B0 |, Aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; o! N% @2 F- I
* L/ e) R, |7 p( m8 j  D1 Q
[
6 [& T$ V, _1 Q+ F, v" w; }7 E

! U- l; W; s; ~& p- o: s8 d6 Gdo-trade

8 ~% S" Y3 Y2 d9 ^% p% {' B/ P4 A$ s* q+ J
update-credibility-ijl

1 f4 }& h9 p( _% W# M9 g! u5 L) Q5 K2 I  V, v; \" @
update-credibility-list
. l+ M% B7 i; V1 t" g: h
: i* k7 y# Q) Z8 i4 o+ |* H6 K

5 N2 }9 K# J; N6 Xupdate-global-reputation-list

# R9 K/ M8 I; H; M/ U1 a& }/ Y$ b) I5 J( e4 d- e2 n' P" y: A
poll-class
( A- [6 P& s- S! f& O

: Q8 ?5 w7 a# X% G; f. N, P/ |get-color
# X3 Z1 \5 R) Y1 S
+ o  y! b/ M- E# p* M- {7 ^
]]4 n& B  C8 w$ R8 `* O
4 o9 ?& V, o5 e% j/ {7 H1 o
;;
如果所得的信任度满足条件,则进行交易
- T& R( t8 X8 ]* a/ c# M1 s- x/ {7 Q2 {$ J
[

8 V. q/ ~% |3 q/ m5 O' ?
. m. g6 T1 m5 [7 S" ?. {$ |# Frt random 360
" g  J+ `1 z( a* \( _& n' S! H' |/ y

1 G& ~& {) p  Y1 R* ^/ e. a: tfd 1
1 q% t) x% u5 w3 A4 d$ P8 q$ T, K

( p5 q& G7 d; R; B& F" Y]

) |. U  I" `) C4 ~  I
4 F2 w8 ~7 a7 p5 C" \8 b2 a% K7 H$ qend
2 K7 c+ d8 J) x* k0 x: _- @* Y: a
8 n; F- l+ g  R8 w( Q, j) Z
to do-trust : H) P6 I2 g; q8 w
set trust-ok False
* w0 I8 M5 Y5 u1 `# B/ t1 L# p. |% t. |. c& a6 p5 L/ u
2 @2 I: F; j! W
let max-trade-times 0
* \: A- x+ e+ _foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ s  q2 N2 B' z( q3 alet max-trade-money 04 f+ T" q- C- P; A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( K: C0 v/ |6 o, P  E
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- h' B2 Z4 t5 z- h9 e- w) d  S. C; E- s9 W+ m7 P
* I% |; \/ r; L1 J8 u+ s
get-global-proportion; h$ w+ C' a6 P4 ?. `. J
let trust-value, e1 v0 p8 v- s9 r4 E
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)
) n; k; W% K) o* a: E0 ?
if(trust-value > trade-trust-value)
! V* P: {4 _6 I9 x[set trust-ok true]
, B0 l" b5 E( m1 M& X0 k* c1 S* bend
8 y( G0 h8 X' j$ R5 D' m! D) x
. P. n/ E) K: m/ xto get-global-proportion
# h" k- {0 A0 @( X: Q- x: uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 K6 ]& l' v: s5 l8 P* Z7 \+ e[set global-proportion 0]
/ Q; N7 p8 W& E( n2 ^. j[let i 04 m* ], @& W) G  o
let sum-money 0
5 e& _# T9 i  @; ~. awhile[ i < people]
; ?" A" ]( q, \: o0 \/ ~[' _$ [, @) t0 V2 i2 q* u7 R
if( length (item i
, p/ ?4 T9 P  h[trade-record-all] of customer) > 3 )

+ g* g% L7 h" c7 F6 q5 A[( o6 J; w& U3 h  e  P7 Q. w
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 R! h, Z# E% F# z* S
]
$ U& Z$ @6 E( V4 R]
7 E  V8 A: h" p6 P! @# c. alet j 0
9 b5 I  X) P/ U/ Alet note 05 P! U8 v* `, C, D% n/ Y" s. M
while[ j < people]) Q1 W3 a8 z( D$ N
[' ^- \8 E' p7 ^# w2 w4 V6 n7 }
if( length (item i
: \. T6 D0 X+ q" h; i( e0 x[trade-record-all] of customer) > 3 )

4 A' v* m0 ]3 m[
3 u: C! q: ?! F( {! o# H) k! kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 A( ?% w% d* K5 B7 H$ ^# I, _% i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 i# G5 ?  f6 B" _4 f! q$ z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# T2 z8 Q$ `$ y  k! _& A  X# e: G
]
$ N2 L7 F: `6 n8 v4 _]; W/ A, Q5 J  K8 ?
set global-proportion note
9 V4 q0 D3 H! T]% ^6 ?5 n! P  C, v% x9 @% {
end
0 ?% J6 s( O# S+ D; O
8 \  s0 i8 A' d5 P/ }to do-trade" m( E6 A! T" f% o3 i! a
;;
这个过程实际上是给双方作出评价的过程
0 @: N) h( Y" Z+ b4 n4 Q, p6 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 ~( }/ K/ ^1 Z: Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 Q: Q3 p, `) e6 m" n' j, L9 Q' qset trade-record-current lput(timer) trade-record-current9 j" s& [8 i: z( D* `9 ]% [4 x
;;
评价时间2 Y8 e: g6 p+ [& c; D: I; A
ask myself [* f5 I+ w6 d, q4 L! S
update-local-reputation
; O/ h4 i9 Z% D! g& r2 Z4 Lset trade-record-current lput([local-reputation] of myself) trade-record-current
; ]2 K2 s" r; m9 {1 N& t9 w) V]; m; l3 z: a9 H# ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 q; n  j& M4 U, F+ R3 X! _+ \
;;
将此次交易的记录加入到trade-record-one
: x' i4 a: w+ Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 `% k# ~6 U. c" }
let note (item 2 trade-record-current )  L/ L; }. k4 k* I
set trade-record-current
' e, r0 {. I0 o(replace-item 2 trade-record-current (item 3 trade-record-current))

/ g1 w  b  c* {# u/ b2 r: V6 hset trade-record-current
% V# S; Q8 m/ p5 g(replace-item 3 trade-record-current note)- V: q, V% m! m) E- d

% e+ }0 ?" |: h# b: g* s, ]

& s# v. k) }+ R! R, R, yask customer [
  ^# l7 Y- @, Mupdate-local-reputation
. n. j$ x* o0 }& }% Q  Gset trade-record-current$ S* l( f8 o2 j7 w4 R3 f8 F; Z& @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ ]3 O& S- R" c* x+ h/ k]4 ]2 Y* f3 e7 A

. Z, ^. @+ p9 T
* t0 j) L0 R4 t
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; G8 M4 J2 v/ t5 @! y2 U; F! M1 m4 k
$ R& W/ [0 f6 ^8 A3 T2 V$ J& A3 Q# h
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. x3 ^1 Y& F0 H2 F* q  j3 E7 @+ k- q;;
将此次交易的记录加入到customertrade-record-all
3 `4 [. `( @2 g; Oend& f3 B6 N, C/ ]" O" N5 P

3 H2 I6 ]1 a0 i) A: h6 h5 Q: e  H8 {to update-local-reputation8 B! a/ m8 W; J. \2 N
set [trade-record-one-len] of myself length [trade-record-one] of myself$ K2 R' w+ h; B  m* p9 _

' `' d2 Z4 S9 e: ?1 F, j3 h( y( @8 h
;;if [trade-record-one-len] of myself > 3
/ x4 f. m  R1 Z+ p  t
update-neighbor-total
8 q, M* N7 L8 l$ C- {2 ~% f;;
更新邻居节点的数目,在此进行
5 u" s& Y8 V% @9 o8 v6 @let i 39 N: ^  K. P5 E/ ?
let sum-time 0
1 ^( b9 f' q6 D$ k) |while[i < [trade-record-one-len] of myself]
7 Z$ R! m/ A. ^6 u1 C[
8 h- C1 \- Y5 U3 }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 F' L' ?( P& D. E1 dset i
6 ^/ q2 \1 u" q! f( i + 1)
+ |' S2 P1 G2 O% B8 l$ W1 j
]' W, o  A* j* i! ]. X
let j 3( H+ s6 A5 Z* y8 ^# c
let sum-money 0
3 y7 L9 @6 F" V) q- u; E' Dwhile[j < [trade-record-one-len] of myself]# M% a( R8 ^7 Y% ~8 g
[7 t8 U" A* S3 B! Y  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)
- \# f- ~0 o/ W( x3 B5 p2 y. ?7 F% pset j9 i9 m2 r+ E! A3 I( c4 g. G" Q
( j + 1)
+ `' Y: z, D" y1 [
]+ V$ G( A& j. u! W; Q
let k 3
2 x; Z" a  i* G$ Q5 x5 Flet power 0; z9 t  Z1 ]/ E# A6 E/ X$ `
let local 0
1 l( ?/ E$ p; q, Vwhile [k <[trade-record-one-len] of myself]6 _' l- d8 v! l3 w) C
[0 A. [5 P; K' ]2 g9 L6 Z; p" 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)
: p, o8 Y6 ?2 |; Aset k (k + 1)" R3 g0 L. U5 @5 t
]) \9 e9 I- [7 I/ D# g4 W
set [local-reputation] of myself (local)# i6 H0 j2 E6 g# x. g9 ]3 V3 O
end7 V0 H2 C/ x. R6 }0 M/ L9 m
/ L  s* m9 i8 ^5 I
to update-neighbor-total
# H- k9 q- A* ^2 T  \: y/ T0 Y' H6 k  [; C: l
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& i/ ]& k- ~( E7 x# y
+ K5 j& Y" V/ y5 v0 u

6 u) S7 f% n. Vend
  A& `' a( w8 P. u: N" C% D$ N, j7 c
3 @6 y. D8 `# ]2 J/ S/ Nto update-credibility-ijl
" g3 ~% `1 [( d2 F" r7 F& {& ~# f6 e' S- z
;;
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。
; S! x" t/ t9 q! x- Q* z) zlet l 03 ]3 s8 F6 M0 J2 D$ k
while[ l < people ]# 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/ z! S3 y- Z. r$ m5 n% e5 B
[2 @- z( P8 q# |  ?+ P  {. T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 x7 O: b1 |7 `5 A% v1 K) L/ Aif (trade-record-one-j-l-len > 3)
* A8 Z* X3 F1 b6 o$ T[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-one7 s4 S4 ]/ n( n+ {
let i 3$ R2 t5 z9 g+ t: y+ ]+ B
let sum-time 0
4 B$ X: s, E8 m3 ^4 x8 L5 K8 Kwhile[i < trade-record-one-len]
! [9 v0 ~0 w& @4 M; \[9 U$ A- h# W" {4 b3 p! t5 O% K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). C: m7 T+ o, P+ |3 J5 p) w
set i
9 o' o/ P+ p1 s5 y* y$ E( i + 1)
! s" a; N6 t. V8 U2 E
]9 o! h  `' L( k! U2 Q/ @3 M
let credibility-i-j-l 0
; A% r  @: r0 [, N6 ?5 n;;i
评价(jjl的评价)
$ O7 m; g3 {" B% vlet j 3
! e0 Z4 O7 b* p6 g( flet k 4
* o* H2 i9 i, l- C5 b7 R: twhile[j < trade-record-one-len]! I5 D* l' v  I# G, P. ]
[
: p; b' s! u0 `4 A; `9 B- O. q3 Gwhile [((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4 t  k5 y- E) 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)
* P" i1 d2 Y% P; zset j
& v# G7 o3 ?/ Z( \( j + 1)
0 U) T' e6 M8 [. D. s3 v
]
# v9 ]4 d6 Y3 P' e3 B1 Kset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
0 Z9 a; P9 z# }( ?; {( }6 D$ L, G8 X4 {! c9 p2 j8 [0 m7 T
* S3 B  V2 k( \8 S* W5 Y3 K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# k# E" T1 w7 v6 M;;
及时更新il的评价质量的评价
; K- l6 z9 ~# |# oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) j& E- s* l4 X6 E) B5 X
set l (l + 1)
+ Q# p" i& F  n0 P+ F  j7 b]
- D: O4 H, I# ~( r3 Z" `" qend
+ `, z. F& \$ i1 R7 j3 F8 F# q1 s$ O# d+ d% W% s5 ]' _% m, u* A
to update-credibility-list
0 }  {2 [: K8 C* C- x, i. ulet i 0
! }$ ?( S" T$ }while[i < people]& H* @7 w* `3 g* p; H8 \7 r. O5 b* v
[
4 V8 r2 L$ x+ I7 W1 H$ x. hlet j 0' y9 T+ b( V8 Z' h3 F! K0 H
let note 08 J7 g4 ?5 H( B2 Z# W
let k 0
3 b+ n; y- L; @3 i6 g, N( R! [;;
计作出过评价的邻居节点的数目" z  l! b( c9 ~0 O! ], z& \) }
while[j < people]
* p* f% ~# u! c3 m& A[0 P3 G( l+ H% _
if (item j( [credibility] of turtle (i + 1)) != -1)8 X& c* c" j8 Y* ]6 v* l
;;
判断是否给本turtle的评价质量做出过评价的节点5 B1 ^6 k; C9 C, j
[set note (note + item j ([credibility]of turtle (i + 1)))
9 g% v0 A' k# }$ [;;*(exp (-(people - 2)))/(people - 2))]
  g5 b/ P- i$ v
set k (k + 1)
& {8 w8 C0 k. \9 ^1 \( f) @3 }]# X, u- B" p1 a/ n
set j (j + 1)
2 J8 Y6 z/ v6 S]
( K1 a2 `& I" kset note (note *(exp (- (1 / k)))/ k)% Y. y1 R3 t! {3 K, o2 U) @3 ~, a
set credibility-list (replace-item i credibility-list note)
. ^, h  O, ]* X0 W" u2 l- Vset i (i + 1)
4 x0 q1 A9 P8 _/ z9 t: Y]: F9 |. U. a/ H6 L1 i% T
end2 e; [9 l* K) |
& K# W( M9 ]8 l% G! _$ j3 e
to update-global-reputation-list
8 c8 t+ p+ v7 W* P% tlet j 0* j# y! A" j; `
while[j < people]
5 N- F3 E, {5 ]4 \8 o0 \% d" V3 Z[
+ |" a' Z- I, Klet new 0/ l2 F: F  c$ j! ]/ P/ y% S
;;
暂存新的一个全局声誉
4 Q$ I& W; f2 K2 e) hlet i 0! I& ^8 |6 _6 z3 i, ?! d# d- H6 Y
let sum-money 05 a1 c1 i5 d8 ~( {: J
let credibility-money 09 W, y* b" Y; Q  ]& P8 [  q3 n
while [i < people]
* ]4 q3 Q- ]9 J' a) J% `[2 n0 E* v8 U, \  d0 Y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 D9 P8 r9 W/ l. f9 ]- |. lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- f3 h9 C  Y, i' Y7 r" q1 ?
set i (i + 1)
% z: f5 E, Z9 o7 \( b& z/ h]
# @- I$ F+ e: ?) q# }' u- Slet k 0" _9 @( P, H) k; \
let new1 0; r0 h& ]# Z; A( e, z
while [k < people]
7 y( Z7 T. j, h1 t, {) Q[
& b7 C% ~5 J1 ], O  \6 Oset 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)
/ e) T. q4 J2 s. L9 W+ ^/ c8 oset k (k + 1)
- e0 a8 N6 r% ]# w( j" a3 i2 n]
0 P- }# ^! w. W- kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ p$ D$ B5 a. ^9 t# C' {2 y
set global-reputation-list (replace-item j global-reputation-list new)
& G9 f  f( z6 u* y+ ?! iset j (j + 1)$ r( {4 H4 g5 c
]% \( q7 y3 }" u/ b6 f
end
# `' K! W- y7 h" l# C$ @
" h/ v4 c% D. |9 ]( Y! `2 a% F2 X
6 _; S3 x! D+ u9 D/ Y+ d1 x1 Z0 @( E, l# Y* \
to get-color
) e4 S1 g; J" g& T. P7 w2 H* ?* @* P& l7 W
set color blue

3 U% t& K) A/ r# `end6 {$ x9 I3 |& ]! T( X

; [1 J  Y. p% e4 P+ @to poll-class
# t- }  B! _; `& hend
. @: \" G% g. x3 g; Y/ o
- A5 v5 w  @1 b: m/ g; s: Vto setup-plot1
2 j5 `+ c) T' U4 n; \6 ]: f0 q* _. {. M0 d: D; P% X  A7 |
set-current-plot "Trends-of-Local-reputation"

3 V* s9 e. w" H! }! P% v, s( T; B7 G* |
set-plot-x-range 0 xmax
+ `1 ~$ ]  P: S; b) x
" t1 k! k; q" a8 i
set-plot-y-range 0.0 ymax
6 ~& y& I9 ]: S& J5 A
end
% f7 m% w' s' @+ F- j7 Z; v% u
8 M3 N' r% P  A+ ^* a1 D3 ~4 ?to setup-plot2
7 f) y4 S* [- z3 `. x) H
7 t* i1 L; ~* l8 {1 rset-current-plot "Trends-of-global-reputation"

0 D# G' L; Z6 o9 d: r
7 z# v  t5 l( N4 t+ Yset-plot-x-range 0 xmax
  A; H8 |% {  C2 {9 x. Z$ F

3 V$ a5 M; R- p. }( lset-plot-y-range 0.0 ymax
" d2 B2 k5 z- o$ }5 T9 w
end+ L# B$ G- s. l3 T6 i) v
8 u3 x/ E+ i1 I8 M
to setup-plot3
* P# D3 i+ K3 `5 h  o1 A7 E8 ]! |$ G: c* ~  m" S8 i
set-current-plot "Trends-of-credibility"
/ @: T2 Y) e( J# C$ A4 }
. {4 e; a" D( }4 Z
set-plot-x-range 0 xmax
$ L. m, j; k0 E& g, J; Q

/ u( t; y9 a3 B. Y) G$ Q! Eset-plot-y-range 0.0 ymax

0 A( D5 g7 _6 ?1 T; Cend7 k8 X3 f( |4 C$ `* R0 j
) N0 p3 I) I7 R& b2 h  K* W
to do-plots4 J/ ?, A# W+ [6 H
set-current-plot "Trends-of-Local-reputation"
' |9 |. Z, v1 S* O/ a# X3 dset-current-plot-pen "Honest service"' J% }; G+ d  S( ~; g- @
end7 A. a5 c3 h2 c9 b8 J

6 v: j7 c. o8 P- M9 b9 m[ 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.1 v6 _. A( a* M$ k9 I* Q
) D" R: p$ Y% q) ], \9 J0 V1 E
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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