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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:# C1 D" z2 {% l; D
to do-business * K. e8 \8 z" ?8 ~2 f. W
rt random 360
3 F: B/ k9 l* t6 v3 ` fd 1
+ C$ M! I4 S/ q) y! l( A: C" ]* Y ifelse(other turtles-here != nobody)[3 M, z+ \, Q8 ?7 p
   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.
. F( {7 E/ c' b; s% `' W% W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ p* F- e$ X: q( e) z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  X' E. p8 V; x* z$ Y# \2 N6 b   set [trade-record-one-len] of self length [trade-record-one] of self  S5 Z% W- v3 `+ C  b& D
   set trade-record-current( list (timer) (random money-upper-limit)); j+ C5 p- f- s- r, R' h$ U0 f, B

- l" V8 s4 Q# |  F问题的提示如下:* Q) b# p, L+ e9 ^

4 @- Z, p- }( L1 Ierror while turtle 50 running OF in procedure DO-BUSINESS
" @+ \5 X' ?; C! P  called by procedure GO; d  X7 I+ y- r' }6 M8 H
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
. x+ t- U" C, b6 R8 Y4 d' ?
(halted running of go)
; _9 Q8 T- Q  P) T; }! N0 n  L8 K) l2 p5 v
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
. k& O+ G2 X' [  {$ T9 l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
! @( g: z5 H0 |! d5 ?globals[
* y. O, E- T7 K- h: o+ ~xmax+ b4 o3 V0 K& B& H5 C9 d
ymax; B* ^& s9 G2 E6 h! S
global-reputation-list
# E9 {; k5 E% l- t0 C8 W* T6 j% L' V! I
;;
每一个turtle的全局声誉都存在此LIST6 j9 v4 y$ T6 q# S
credibility-list5 }- E2 u8 }/ v* d' L/ M
;;
每一个turtle的评价可信度9 {: S  e0 Q$ |# I
honest-service7 t$ Y& p1 p9 g: _
unhonest-service
) G. r# |" p, s& J# Aoscillation$ W$ O1 Y7 V! F% C* y. I  U
rand-dynamic
; v. E2 a9 X/ ]! i]8 Z. J% r% T7 t. F' [
% T8 _( {. ^/ x6 O
turtles-own[& R( N& P9 _) y: G, S- I
trade-record-all* {2 u! ]$ w. c% Q8 B! d
;;a list of lists,
trade-record-one组成
) J5 j" x0 o( \9 Atrade-record-one% f2 N$ n- k8 p9 Y! P
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 o& d' v! h8 Y) B' W- ?
/ b9 M; l3 s( \; k6 O1 Y;;[
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]]
2 C- ]5 o/ R6 J6 k7 ntrade-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]
, ]$ y# A0 J+ b! \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
9 T$ s$ i& F  xneighbor-total
8 o  D, f$ ^/ C" }1 \' G7 @;;
记录该turtle的邻居节点的数目
. f* X9 M( h- t/ R* t' M' y0 Rtrade-time
' c/ t# \- k* M& R- d  ^: S! {;;
当前发生交易的turtle的交易时间
& p8 `; j0 `0 B) F& ~+ A4 [appraise-give
) ~$ q& Z3 h$ C;;
当前发生交易时给出的评价) P7 u) O- B$ L4 o, `
appraise-receive
( b" o6 _6 e: u/ e4 u  j9 l;;
当前发生交易时收到的评价
9 S5 W' c/ G# Fappraise-time
' t5 z  ~% i$ k* R; R7 m;;
当前发生交易时的评价时间
, w# U3 B/ _( x! Jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 }* [4 ?3 g  e8 b$ l+ etrade-times-total! y& x$ C" G- Y2 N% _# c* h
;;
与当前turtle的交易总次数
( |: e) H$ W/ a4 S* S5 qtrade-money-total, H' [  t- F8 F2 E8 D7 f
;;
与当前turtle的交易总金额5 L2 m# {) S/ d( P+ y: }( y% U) g9 ~
local-reputation
4 G; v+ i1 U0 A( L) c2 j5 vglobal-reputation. G7 {  _+ h  d/ c/ `
credibility
/ [4 @2 k, ]( x9 T2 o;;
评价可信度,每次交易后都需要更新
9 d3 I  ?- u" x& c$ Acredibility-all
* n8 `: v& W  e" Z9 ~;;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
3 T* ^7 t. o8 v7 z, Q2 M2 I3 s$ u
% G) t% e1 Y  z- M! ^2 Y% y  k;;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
' Z3 J; D4 _: W1 r1 fcredibility-one
! k6 s# u( ^6 ?' _;;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" @4 D2 j) z! h1 F, w  U0 C
global-proportion
) w( Z. m7 W. Zcustomer# r9 G2 m" \9 \$ _- i
customer-no
( u! t( b( S$ u* J' Ftrust-ok+ S" R, _+ W( ^8 O4 x4 ]8 w
trade-record-one-len;;trade-record-one的长度
: i: r# n4 ^0 x* A& r]
, h4 m1 j  a6 U
7 o7 B0 {( Q& @8 R) n; n& b;;setup procedure
/ J3 \- }, O& L9 V$ R
- s0 t. H. O8 T8 u, mto setup& D! P" U. `. G0 ]3 O# S5 H: Y
# J, g) b( y/ [0 Z0 q6 d$ `4 K. ]
ca

. V) X( q% w9 J/ k) ]; S/ ]6 ?; w! `+ L' w
initialize-settings

' C/ [# F* h4 c( ]+ v$ U0 R/ r+ {: L: \
crt people [setup-turtles]
4 }- Z' P1 |8 m3 H. z) ]

: S5 g9 z! f$ w. Q3 Lreset-timer
4 I0 J& V/ k& g. c5 g

) V' O) i0 D' m( I. o; o6 Lpoll-class
2 f  q! X) O% k

5 y. h7 C9 v% j; Z& H& _$ M$ {setup-plots

( x) l; W5 D( M9 r3 |2 H+ \3 F
8 u1 c6 l  ^  u" fdo-plots

; D, ?2 \' N7 x- O% Vend* y4 Q8 @0 o2 _# X& w  N% U0 k

1 v/ V3 t$ N4 Oto initialize-settings
; }) d# I6 M- w$ [
. m) E& Y! }$ q$ I8 yset global-reputation-list []

9 H" }' j- E- |1 G6 F) j1 h6 @
set credibility-list n-values people [0.5]

' X' G+ ?: C( S
; K5 f# e1 K7 a' wset honest-service 0
$ ^( X. C5 A7 _& H2 ?4 Q+ b

8 L6 Y1 @, t3 d* `1 B2 d' Sset unhonest-service 0
3 t5 O; x4 y* x& [! @1 K

, k8 N6 Z" E& t7 m6 S  b" J6 eset oscillation 0

& {3 M( K: y/ t/ {' i8 Q  m0 Z4 d( q5 j' r
set rand-dynamic 0

% {8 `2 d1 X/ M, u( P9 @end1 n0 `- W1 Q. n$ q
  A+ ]  v' {: H* W. O
to setup-turtles 4 C% g  Y5 L  N# J. [9 D) ~1 w
set shape "person"1 E! `5 f; d/ ]" s. K2 E0 ^6 e
setxy random-xcor random-ycor
5 ~" K' I1 I  W4 |set trade-record-one []
! f! e! ^3 {9 f! j( i
1 n* W7 J9 k: k( E& |, R, x6 r
set trade-record-all n-values people [(list (? + 1) 0 0)] ; Z5 T5 K% L+ x0 A/ _2 E* w5 Z: g/ }: _; W

5 S7 z; |! q  o' E% r/ Sset trade-record-current []. h+ r* H; R0 A* {2 [
set credibility-receive []
2 s: H5 _9 L! [# m: F  Wset local-reputation 0.57 F# B6 [. S1 u  e: |9 o; g
set neighbor-total 0+ a% k5 A3 `) m
set trade-times-total 0- F6 O3 ]" |% B! U  f
set trade-money-total 0
2 S4 H, Q- X' J  kset customer nobody9 x' ~$ V+ q$ k
set credibility-all n-values people [creat-credibility]
2 R) H: g/ g! k2 M8 }; V+ yset credibility n-values people [-1]
7 ~. a3 @3 D% [' x9 Zget-color
5 g  U) e6 O, C  e: _
4 {0 h. X2 y2 F* D
end: n+ L/ k' f- f' k
$ s( x6 `2 J2 A2 `
to-report creat-credibility
3 H9 l0 G5 A7 ?  k4 m  ^report n-values people [0.5]9 u% q, {. a  B( H: o
end
! {9 F& _  W3 i
8 t: J1 n3 P' bto setup-plots# `/ F/ u/ V. t0 |, G9 F0 ?# s
$ P6 A( d/ z8 O  H: x) ?: e
set xmax 30
) U* s9 x1 O! H0 F! B9 L

0 ~  H6 A+ U3 w$ qset ymax 1.0
& \5 t! }' S3 d  w

; ~7 c: X# @& ~" S4 n- b0 g3 zclear-all-plots
6 C  @9 L8 M: N# Z: r2 H
  ?- I& s8 z: B8 o( _2 u
setup-plot1
1 [9 {; O7 S9 j" b

0 `! a5 m' \# O, o( W& U* Fsetup-plot2

7 K$ q+ B. _$ C9 G: ?* g0 \, G4 o. h! M- ?, T- E! q/ [9 I2 Q8 D( ^
setup-plot3

& `5 T3 ]! A7 Y% h: Dend% z9 D6 {& V  ~( P' h# h. L! K$ B

& N% a- o) l' l- q! ?;;run time procedures
5 h8 `7 w# K+ q4 R! ~
- {6 z+ X8 i+ E! Xto go
/ f/ N' ^" R$ h  x  }
) h: h7 H5 o  g8 \7 `' cask turtles [do-business]
6 v1 C9 }0 }' ?8 }9 h3 p; r
end
) ~, T+ {( ?7 Q2 B( v/ |" p! p; D+ G  Q% r7 a4 X2 e, \# C; t5 H
to do-business
/ P  r5 h' ?9 r- e
' n$ [: w$ E6 J& W
6 q2 }1 S* v% j/ H" k
rt random 360
/ C8 k7 h$ ]1 `4 W
' i; O  P1 m5 v7 {
fd 1

7 ^' {4 F$ d/ Z9 A6 {' r5 E7 H6 D! f/ E, r
ifelse(other turtles-here != nobody)[
) s" U; H0 U$ C

7 b( L4 _# j. N- M  rset customer one-of other turtles-here

6 T+ x3 g: L- C$ Z& h9 d
) V, L, x: v  B" K2 }, S;; set [customer] of customer myself
1 c+ ~% W. X6 l! ]+ s0 g
1 n9 F1 e5 z3 x1 u( {
set [trade-record-one] of self item (([who] of customer) - 1)
; s4 E+ p, w& S7 u2 L[trade-record-all]of self% J2 C( K' H1 o6 k) d" F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ p" z# c9 a* {4 ?+ |+ R$ f  A4 N1 k, A! i
set [trade-record-one] of customer item (([who] of self) - 1)3 q0 Q8 ^2 i5 W* u% ~( F1 h3 q
[trade-record-all]of customer

. _1 f5 U. P$ h) v- i$ e9 n
7 m! U" A4 n- r+ k( q! d  oset [trade-record-one-len] of self length [trade-record-one] of self

, V* h+ P1 B2 t1 k* @/ J9 T+ T7 C: Y/ E
& F) N3 F4 K1 {% u$ M* h% jset trade-record-current( list (timer) (random money-upper-limit))

0 y' K0 d$ v5 w3 m/ N' r/ @" {  Z! U$ [" W
ask self [do-trust]
5 D' r8 X. l; q$ q# h* X;;
先求ij的信任度
0 h7 q; _! N" L/ s5 f+ S- P7 V8 ]6 t. ]1 A! O/ H8 j
if ([trust-ok] of self)
  f; O4 l  k( r;;
根据ij的信任度来决定是否与j进行交易[) O6 K9 m( c" X9 ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. V( {3 e, `" ~- y  I
( J$ a; F2 p# ^( T1 k
[
6 M# O# {2 f8 `6 D7 p
  A6 ~% }3 k2 o% M. N, G
do-trade
# |/ e$ v0 ^# {7 ~

2 A- g2 l- I& p: A$ fupdate-credibility-ijl

/ H1 c& }7 P( V
8 \' B/ |8 A  a' R; F- Q! Q, Vupdate-credibility-list
$ S0 ~' R1 f3 r! R1 e
9 o- X2 i9 n6 R5 b* i! q

& @1 @0 p  f$ X) M3 fupdate-global-reputation-list
0 z# W7 {" u& {' D$ W

6 M1 B* S% @, F' Vpoll-class
7 s2 g& K$ A) e+ a( ]
$ o& T  B8 x( {% I
get-color

$ S0 z4 h" p9 {( N  J% `5 F
. o" r# V0 y% c, D& p$ h. P]]
. V2 t! k  `5 z0 o9 v
" O3 t) z, h1 h;;
如果所得的信任度满足条件,则进行交易# _' R3 b3 Q% y% O0 c9 _

# E, \7 L; W0 {  a8 ]/ g& A[

7 g3 R" L. \- y. Y$ B
! m* N) o7 p* b- I4 ^+ W+ C# ort random 360

" V4 `4 k. n4 B, }0 A8 c2 X0 A
* c3 H# }& Q9 ~) bfd 1
( P0 k1 i3 s5 e

5 W8 Z* T# }9 A# j7 {& L]

8 Z1 L4 T1 \. I% n5 G, _* D
4 Y! ~! F/ n9 _3 w5 j9 Q7 I8 Jend
$ x0 P/ p/ |5 A1 K& q
0 Z/ K8 @" A& I& T
to do-trust
1 v/ v) A$ {# _set trust-ok False' B" K( K& L1 [! _6 L

1 m# Q; U( j0 g5 K' \

8 q' W' u+ S) q3 C2 t) llet max-trade-times 0  f* a/ o6 Z8 A4 s6 P6 `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: W" H$ Q2 l3 g: Dlet max-trade-money 0% r- p2 B1 G9 L& ]- q2 ~
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- [/ G8 ?8 R- m& s$ ~# r# L1 Elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 K2 O8 m0 q+ `  O& Z5 J0 c
# o7 I+ u5 f& O8 x8 G

* {+ [/ ^" Q5 I; C3 H8 S9 u7 sget-global-proportion
; f* M/ t+ L* @- N( V+ olet trust-value
* ]4 \: w: Z  X: Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
/ k5 z1 Q7 h7 _- E' R# e
if(trust-value > trade-trust-value); s$ P/ ]7 F5 n6 }
[set trust-ok true]$ g9 D( ~+ i/ R) G; D
end
4 c9 y- X+ M0 P. z1 Y- S2 j) P# q6 e1 _: X! ]7 n3 @9 u
to get-global-proportion
: E8 l+ J/ Q+ q* Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 C+ n3 Y# k: X8 r. x( [' P[set global-proportion 0]' M* H+ k; T4 g( r: \! _. S
[let i 0
% \" x' h6 z, E$ l+ ]8 p% f  mlet sum-money 0* p) c3 c1 G; q& K5 G% L: d9 {
while[ i < people]
. J, N: B5 A# X- s" f[
7 W: z' {2 w7 A3 d0 ]if( length (item i
5 F7 j, q* M/ x1 ~5 ]" r8 i[trade-record-all] of customer) > 3 )

" N" f. j  D. U# Y4 S[
) Y  T2 p4 W) B( r* e! @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) ^+ E/ y3 ~0 ^5 r' [3 G( F4 ]& A
]' ?; S$ F2 _' T) l: T) q; O
]6 S  `2 S& H% }! @  n4 X( C
let j 0
" V) R" {$ a+ s$ `7 r4 \$ Plet note 0- }  ?+ e$ r6 U% U( Q2 Z- U
while[ j < people]
' y- _5 u6 W2 @# E5 C; B[* K, e; {0 O2 Q& A5 ^+ ]2 k5 _
if( length (item i
; u/ N+ e$ h6 ^& D% w[trade-record-all] of customer) > 3 )

) o2 e( c& {4 `$ }% E$ I[
1 C! T, U( |' }0 c7 a$ sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* P/ P/ v0 F9 M. J8 v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 p+ E! c0 v8 M# I8 h6 Z& h
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 T4 h9 @4 S+ s  v/ x
]* K/ _6 [8 p. o0 {0 c" R% X
]
4 X5 E9 N- `) }set global-proportion note: [! c+ i) Y6 S5 V$ A5 A0 x5 W, J
]$ Z$ f( K$ r# u6 C7 r1 K5 `$ M: W
end
3 V/ ?0 L$ f- x. ?8 J- ~$ D! Q2 O+ v+ L7 j- g, C
to do-trade8 u* [# K( ~) ]3 |5 x6 |8 B& o$ N
;;
这个过程实际上是给双方作出评价的过程/ \" f2 s1 s. g# E1 @, i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 l" ]* t) Q! z7 A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ Y/ `3 U& b4 P. [% ^5 zset trade-record-current lput(timer) trade-record-current# ^* C1 j2 {3 f5 m/ Y2 G
;;
评价时间8 P& A$ X+ Y* Q! C
ask myself [
0 W7 [" O6 [" D3 E, qupdate-local-reputation  X, ]& s/ c! |' h
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 D+ |3 K# s$ S1 J' a, L]9 e6 }, T; J& y* l" S; R
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. E; A; D; E( x* N;;
将此次交易的记录加入到trade-record-one# }) e1 M& I  `( a$ b, M4 B8 N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); g3 p- c3 g- x
let note (item 2 trade-record-current )+ J8 W- ~* ]# R" S, t* r
set trade-record-current% S, W* K3 B6 V( [' U- |. a
(replace-item 2 trade-record-current (item 3 trade-record-current))

4 x* n! c5 `/ U; X& vset trade-record-current& Q8 o) V5 W3 g: L) `3 L+ p
(replace-item 3 trade-record-current note)
( o' i$ l# q2 G9 S) j: u: d
( E9 D3 l1 F. X6 Q

- {8 B  U0 Z- @ask customer [1 f( z) `% X- w7 @: {) G2 Z
update-local-reputation
0 h4 i) i7 t' P& p  Iset trade-record-current- f% B3 j( \( m* u/ z, v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 O7 s$ A+ |; t7 h* J]
& n# r, R4 `4 c' @* W4 {* q7 w: H9 J" R3 V; c' U; l& ~8 d2 {  a- {: b
2 K6 ?8 B  T% F% K* P8 w3 S; m
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& o2 F- R/ b- Y  D1 h) D

( `* j& ~; Y; [- \& {set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 d$ M+ d/ b" m! ?! Q;;
将此次交易的记录加入到customertrade-record-all
, I# m' M* X0 H* x3 I7 l* vend( a1 n/ {# o7 x9 q- d, X! ~3 s  p

2 J$ p  N# X  }% e' g, E5 Z5 Pto update-local-reputation' k9 q) F4 i0 b# ~
set [trade-record-one-len] of myself length [trade-record-one] of myself: m) r9 `1 [) r5 }# z4 g3 I$ R
7 B, J' q5 Z1 a- U4 }

4 x: x8 z- }& Q; r;;if [trade-record-one-len] of myself > 3
0 Z# Z4 R* L8 X+ V2 N
update-neighbor-total
- g) D$ t) @. B" j) D- K;;
更新邻居节点的数目,在此进行
3 S! \  b) k8 Y4 Plet i 3
/ ]4 N, N3 X2 q  dlet sum-time 04 C4 ~, z) @. `2 |3 u1 o
while[i < [trade-record-one-len] of myself]6 G4 x; d  c. [7 H8 ^% ?) R
[! j/ f) U. p0 E' `3 B$ O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ x8 [2 l0 L' cset i: w9 P  e4 r9 z3 T; n- |  w
( i + 1)

* f& q( x9 W# p# Z( @]
3 ^" U8 ]& d. J9 D( u2 q  jlet j 3
9 b  U  ?! h; j/ zlet sum-money 0
2 h; k0 a8 r9 y. cwhile[j < [trade-record-one-len] of myself]
+ K- n  u5 i0 K* k' t5 U7 {[
7 c0 n- i4 N" w1 a: T2 R2 ?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)
# w  P. B& O, d4 V. S# K3 wset j% Y4 h0 {  `1 m
( j + 1)
  B( }" V6 L  ~+ e# q- |3 e1 d
]
& l6 c, P" `4 W' p5 r6 alet k 35 Q& t5 N! N7 I
let power 0
+ m2 {6 C; a" J4 @let local 0( I; m% N8 V! I/ _( r3 X) P* \
while [k <[trade-record-one-len] of myself]
  E7 ]3 A' ]; K2 U1 s[
# D+ I6 G# c0 ]5 H( @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)
3 V& i$ G+ n9 Pset k (k + 1)- m* Z: u0 o) A) T* d6 Y$ B
]
) ]2 J9 x, G' a; v4 ]; F) I  V/ T* O  hset [local-reputation] of myself (local)
0 }" E8 B% @" \8 ~; x4 Lend
9 t2 f- b& U  J* E' a4 @# p
" V' q6 X) }8 ^- Z! f1 Z1 A* c- zto update-neighbor-total
9 e/ x6 M4 \8 v8 G; G/ u" [  T) Z2 Z5 c- x! k, r
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 Y1 p' J% F* Z

$ _& j" E9 a7 G
4 E& c' g$ a$ s4 l6 s1 L
end! W7 ]" q. p& _

! V7 [6 P+ h( G9 y+ hto update-credibility-ijl
1 j: J" O# Y" B& W) w+ t/ a! H. T9 Q% a  ~; ]# l& k
;;
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。' d, E' T2 f# r6 u+ _0 {3 ?0 V0 y
let l 0" K' ~1 ?2 f1 s. w/ a/ d- b
while[ l < people ]
; `! Q6 ?* N) D) t) y# V+ I;;
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/ k0 x0 a, h" V0 }
[
4 @( ?+ Y3 \# elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)% t( R' Y5 |( K3 \( b$ o
if (trade-record-one-j-l-len > 3)1 s- P% ?, S( {$ h: o! ]
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one7 S$ [: U! r6 r  q5 l$ G# Z1 _
let i 3  {8 s( k" ]+ ~+ o! d# l
let sum-time 0
3 `2 @8 T% w: Z. A7 [+ L  B% J4 @while[i < trade-record-one-len]1 @4 W. v& H" z! W0 d; p  A/ i4 Z
[( _: E$ P. t) i2 C
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% n  N5 u8 q/ z2 L) uset i
* s! u; m" }8 W  e/ c: _  q8 r( i + 1)
( K! l# ]' h$ P, q
]
4 \0 j) o6 B+ K: Q: v7 Wlet credibility-i-j-l 0& R8 f! {5 r  V4 B$ I& r# w
;;i
评价(jjl的评价)% @" ]2 D" E! j. b, ~% R% D
let j 3) a) o7 a# }: J, n! s2 N
let k 4' y  N/ x. p' I, W* t8 `- H
while[j < trade-record-one-len]
/ t& ~8 q6 H$ f4 \: f" e- T[/ S' T$ M+ H/ \
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: Q' q2 \& y8 m
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)  `. O" A! n: D+ i! Y1 f2 Q) X
set j
2 _& U* e  q/ i( j + 1)
% _; E2 c( Y7 p  E5 \7 P
]! M3 y$ Q+ J9 ^( W: n( [- ?
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 ))
! U  Z; @7 C. w7 _! G! K) Y2 \
& H# w" f, e3 X6 ]
4 H" H' J/ E! {3 A" E6 g2 H) ~& c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 m2 {6 c1 B$ u: y
;;
及时更新il的评价质量的评价' I( e/ m- S* B# b* ~
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, m4 s+ e  g; C, B% o) Wset l (l + 1)/ }/ a2 P: Z1 r( {2 x
]
( \6 c; v- b* B4 E+ J/ {) ]end
. E7 U' }6 K; }" C. c
5 f( Q" t' U9 V) }& v: P1 Fto update-credibility-list
1 Q, s% h& w$ a5 G* Plet i 0
% w( Z  Z3 m6 _* Q5 Iwhile[i < people]
, x( ^3 I% {5 t& T$ k; p7 _$ c[
6 L" V! e  M1 J7 j8 g' B  l& Ulet j 0+ q; B! A$ [& i4 z2 q& n4 Q: y3 d
let note 02 f/ Q3 e7 W3 f5 }2 M$ V
let k 0
9 W3 d' p: [3 F7 E8 };;
计作出过评价的邻居节点的数目0 u! A' y- G9 l! Z3 b
while[j < people]4 E% r( I2 t- E! @; k$ ?
[: Z( E0 i, @; v, w: F3 l
if (item j( [credibility] of turtle (i + 1)) != -1)
" j5 ?* d0 }7 f0 C! d4 U;;
判断是否给本turtle的评价质量做出过评价的节点
2 V2 N  u3 F# _' L! d+ f[set note (note + item j ([credibility]of turtle (i + 1)))
' [9 o2 e3 [6 ^1 @: k;;*(exp (-(people - 2)))/(people - 2))]

$ y0 l+ F, d- e/ ^  mset k (k + 1)
# x+ p! k) P2 o/ ~]
+ ]" a% M2 l$ R* u5 T* Hset j (j + 1)
0 f2 C: @$ P! {/ []1 n8 {( @" k$ c# y- T
set note (note *(exp (- (1 / k)))/ k)
2 O! M  e3 p' L; H& g( ]set credibility-list (replace-item i credibility-list note)( W  L9 V+ Q. Q# X- K
set i (i + 1)
) g' D$ R9 |' J& ^% s]5 S! q4 k: U, [5 D6 [* p
end
( V- C! Z' G+ _+ P; z1 d* J$ v( X  _9 }8 Y; R
to update-global-reputation-list
0 o0 _0 y2 |& u9 w3 flet j 0
1 \3 \- Q/ O* q5 jwhile[j < people]
3 \9 _6 ^' G' B' O  @  W4 D! t* y1 s[
$ p) x7 q/ o0 k! |9 k0 U$ ^let new 0
+ _" j6 O' j! y" ^;;
暂存新的一个全局声誉
5 [4 E) _. ]% [& L7 N- a3 ^2 qlet i 05 x0 M+ ^! j$ V, j3 U
let sum-money 0; S! @% K  `) M
let credibility-money 0! }( T* S% Z; z1 ^: b$ [
while [i < people]
1 T4 u: \8 F' |[
0 Q  z" ^7 u1 Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ z7 m$ \! t1 d( k0 Tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  g7 b/ g, o$ Z- W5 v$ k1 tset i (i + 1)
! \7 m# S$ N: `]1 b$ I1 T, Z6 f6 ?3 g$ e
let k 07 W% v  ?, i; a2 {
let new1 05 q! O& P% g6 X
while [k < people]
0 v# Y6 E( b& J! b[
9 [" F" T- l1 \& J3 Dset 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)! K2 K' ^2 G; w! E
set k (k + 1)1 z- P$ Z  p$ t  l1 h
]
: H  K% d" d: ^0 j% O2 sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! ^: \5 g: i% o; L! dset global-reputation-list (replace-item j global-reputation-list new)
6 K, e) R/ a' P' Q8 s/ v9 N9 mset j (j + 1)
; u# ?  p0 j- `5 F- |+ L]! u) J( [! x9 a$ J8 Q6 F: G2 \4 J+ F
end
, S; L# Q. u; Q3 M' |, K& p" q. \
, E8 z1 ^2 f3 {1 G2 e. \
$ j  F; L9 A1 |- V) b0 ~8 E( u$ @; I! u0 s( l3 \4 X9 ~
to get-color0 B7 M3 d$ V. }% ?: w
# ^+ A+ n5 Q7 @  S
set color blue

3 o+ p. A7 j) Y9 B0 b7 |end) C' `6 j; V, b- H, l3 y/ j2 d
0 k" ^4 V: z- J! X+ m* K; w: P5 j
to poll-class
' W$ ]0 x' r9 Uend% n  o. O: ~! _# P) i. P" q! ~2 s

7 s* }! B5 `1 a3 kto setup-plot1
3 G- f" J* s; d& `: ^3 i
, B7 a6 e2 E, W* {set-current-plot "Trends-of-Local-reputation"

" A8 a: A* v% v: y0 r$ N* y
( n1 c% h& i* c' C  u: C4 iset-plot-x-range 0 xmax

/ e! W. q; W+ f
; H1 c  G/ y- vset-plot-y-range 0.0 ymax

- p9 l  N# q& N2 R' Send! q; K4 q  R1 n, h

: R7 a% ]4 Y7 G: p" d. y8 Qto setup-plot2) @; l+ q3 y. o0 Z- P7 Q

+ f& N- m$ m; rset-current-plot "Trends-of-global-reputation"
7 ^2 W# L7 D8 J- }% _* I

- W: L/ T% e5 D8 v: b' l, ?# Hset-plot-x-range 0 xmax
8 g  h( K3 `* K. {
, T8 M$ O& g3 z; e8 V
set-plot-y-range 0.0 ymax
/ h, j+ v0 L/ `9 i8 v' `
end
) _) c/ c5 A' w7 @1 ~% h2 h' t$ J2 C% \4 O* d# h6 v; K9 s* U$ _
to setup-plot3
3 H* }2 L& s4 k
( d  s! t) z7 j4 j, h, t# vset-current-plot "Trends-of-credibility"
' F% x3 h7 C5 h3 S7 h: C( |
4 \' D& }* {; k5 k8 z& \! U- X7 G& O
set-plot-x-range 0 xmax
  D1 M7 P* }, J/ Z! _

$ Z$ [6 U( j; ^7 Pset-plot-y-range 0.0 ymax

: W. S3 K, M' Iend
8 K! l( ^$ ]! m$ p' O
- e" g6 K" A1 Z" h6 {: Vto do-plots1 }. p6 D! d6 _1 T7 Y
set-current-plot "Trends-of-Local-reputation"
# ]- W$ X( m6 c  z( sset-current-plot-pen "Honest service"- z  A, N; @2 r1 q
end
0 H3 T$ U0 ?& ?7 T* |
/ e& m. i5 Z9 J* h[ 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.. m$ B: ~4 ]& B+ y0 ?7 ~) V
) K% s+ g7 F+ ~" o
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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