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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:
$ Q: t) z& v8 K/ X$ M3 y* `5 Wto do-business $ a; r! J0 U9 p* t* l( q
rt random 360
9 f0 @& ?4 `; Z" X fd 1; Z: C, o+ B. t/ w
ifelse(other turtles-here != nobody)[& w: r3 n8 H: 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.& N+ c% |; A$ z# }- N1 V4 g
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ C) O. M, f0 X( m9 b, d, @# x& @
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ J& h/ E& b2 C1 Q  \% d, S+ V
   set [trade-record-one-len] of self length [trade-record-one] of self
* G, I4 G, ~! d& u* N" p   set trade-record-current( list (timer) (random money-upper-limit))
8 K6 @& @2 d! h4 q  `# C) A4 P: v) F& X4 e2 K
问题的提示如下:
4 H- I& s5 S4 `& q/ ~$ R1 ^4 Q: F+ ~3 [& ^9 f! x- z
error while turtle 50 running OF in procedure DO-BUSINESS. n7 X5 B2 |% i( x, _( h
  called by procedure GO
; G( ]! [2 a7 BOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 @! R0 z% z, X1 F3 z9 f
(halted running of go)& y; F8 M" n* n/ {
" q5 o/ h$ @9 v7 k
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~~
' B/ E& C5 O' c6 Y/ F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
8 O: f* v4 G% qglobals[& h' B- A3 L% @7 b! H/ S
xmax
2 }' p: a5 [2 F2 T# g; _ymax
2 L! S& L  u  ~3 ]$ M- O# B0 |* }global-reputation-list
$ O* }( V" ~, o+ M1 ]: b3 x0 R8 Z, }: z8 D: A, b) {' ~( \
;;
每一个turtle的全局声誉都存在此LIST6 i, P3 M3 |- m8 [
credibility-list- Q, y! ?2 k/ n  y- K
;;
每一个turtle的评价可信度
% r' ^' S5 l% R& i& p1 ]+ o4 `" N. chonest-service
' l& G' m) q( |. `2 q( cunhonest-service
% ^" t6 i: |& a, ^oscillation
1 r6 z5 \7 z$ A6 ]5 j* Zrand-dynamic- R8 }" g( U  G0 e% @; _, `
]
% G1 J0 c% m4 Y7 V4 _! N3 V1 Y
; I4 ]' L0 ?" F4 ~turtles-own[  R8 |+ T) L7 W9 ?9 ?  g) _- ?
trade-record-all
- H7 `7 ?8 e: S" N7 n;;a list of lists,
trade-record-one组成" b8 T- V* E0 c- N; w0 X/ \# h' d
trade-record-one2 W" ]- c# z; Z+ s* h2 A& G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' a' d) w" F+ a

+ M/ f  n: c$ K, U  n;;[
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]]
% N. c9 Z/ l  u9 X/ [) 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]; _5 m1 A( W, U& [: Y( c8 X
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: B/ p8 n2 s# P2 P
neighbor-total
. C9 _& A$ `  d+ }9 |; \5 ?+ M;;
记录该turtle的邻居节点的数目! J6 K7 }( a' k* c
trade-time
' b* H( _8 v8 I  h+ |;;
当前发生交易的turtle的交易时间' Y0 _3 D' c! @+ M8 d& Q
appraise-give
0 ?6 n8 D! Z! @  I$ Z8 ^1 D;;
当前发生交易时给出的评价4 D1 a: T* y9 W
appraise-receive) Y) D) B$ @7 L6 K: D4 G% l. y
;;
当前发生交易时收到的评价/ B7 U5 e6 A- I7 W4 y* n( q8 ~
appraise-time/ d2 t& P# a# X# I: L6 `) `
;;
当前发生交易时的评价时间7 U: P5 e" a+ y8 z9 V! `, W# M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 w0 N5 Q3 q& b9 u, h
trade-times-total
: j* B4 a& R; O4 z% l5 h, _- g: v0 G;;
与当前turtle的交易总次数
/ m- V& [) n7 b' T% L4 Etrade-money-total! g" H  ~) Q5 N$ L: u
;;
与当前turtle的交易总金额; P4 ~( Z  X: a- o" C) ?+ m# A
local-reputation$ [8 _3 [7 X+ m0 y
global-reputation
0 y& E% @# v1 p( a, hcredibility
% \! |* G0 ^% a;;
评价可信度,每次交易后都需要更新
0 ^7 z# S- x* acredibility-all. U# I- }  B) f  m
;;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
& G8 k7 G) o6 a6 E/ Y. E$ s9 b
' K. Y& o0 Q- @& ^# @& p;;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
9 n- m* W8 s& _/ Y. w" R6 R( Gcredibility-one+ o" L2 g, h& M4 G
;;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) X9 Z) i+ |) M; p  @  i; Y
global-proportion! @: _- e, i1 @# Z& o
customer
. O* s% {9 H4 gcustomer-no1 T- Z0 A4 m3 Y( L/ `4 l0 q% z
trust-ok
) C$ P7 G; m8 v, u7 _8 k/ h  x7 X, V( `trade-record-one-len;;trade-record-one的长度4 i! g# [$ r# Z( I) \; F
]
5 ~+ N' J$ i& I$ t- _
7 E2 [5 U! Y, p# B& ?% f3 r; e;;setup procedure
  ]) u" ]3 O# O  u; P& |" |% L+ q8 I6 f- U: _
to setup: Q. u$ u7 Y* @" w$ {' P" X0 y

$ }. A7 t* I) Z0 D  A( |ca

. u2 m9 j2 w) v& {! D+ P0 g( t- }0 X. ~8 p' P: V8 X
initialize-settings

9 T& i) L) g2 i. Z7 H
& |; Z, H, ~+ vcrt people [setup-turtles]
: W; i8 l, T# g

1 U* u4 e; z& Rreset-timer
# X1 R6 N8 J: I, k; f
( p: N9 g, ^$ I
poll-class
0 \0 e2 d- j% }- d* ?7 i+ N

: D- i5 b1 x6 l( p' }setup-plots
4 o! h- X+ P7 D6 G
; c$ H& y, w/ p& Z) Y" x
do-plots

, {1 ]% f8 h2 U" M3 tend( Z+ N4 ^7 B' R6 v  b* w" N2 g

1 r4 F# i# z$ w" b( h* mto initialize-settings
2 z. P4 H9 [" ^0 u. m
. \) z  R& Y3 c1 fset global-reputation-list []
2 O: V% C2 D: _! ^
: [" c% v% T2 _% b
set credibility-list n-values people [0.5]
5 k. V) D4 i& D, Q

$ b9 v  Z9 J9 V2 ]$ _set honest-service 0

  `/ Y' E$ o" q- |$ N8 s
5 z: Z& Z4 C1 s& H' Q2 Zset unhonest-service 0

% ~5 r. v- x9 h, \. r
% x, h  o* [' Oset oscillation 0

; ~/ z' E+ m) i" K$ D3 B, @) E8 s# J  m8 b
set rand-dynamic 0
- o1 ~* y4 B2 o4 H  T; I
end
: t7 U6 x0 v+ x* E
; x% I3 G. o$ E- m/ Z. {to setup-turtles + g4 J0 g7 b& t) ^
set shape "person"$ l  M7 ]$ ]/ i6 S9 A2 u. H; R
setxy random-xcor random-ycor
6 P. i  T8 }' g/ y. ]2 `set trade-record-one []3 m- n6 q3 U) S7 a6 k

& O/ W3 i. {- ?5 w' U/ Cset trade-record-all n-values people [(list (? + 1) 0 0)] 7 t* z* D' B0 ?! j8 \- H* ^, a
6 X4 |% s0 x6 p* O6 Q
set trade-record-current []( U( J/ ?1 d- `* @. R7 o! A
set credibility-receive []  K5 t, t  A( t1 w) S4 H
set local-reputation 0.5! S) d; y# s% _! @5 D- U3 y, L
set neighbor-total 0
$ X1 ^" h) T' |8 X2 bset trade-times-total 0$ t; L* z" Q6 e: |" M9 E
set trade-money-total 0: c% s, g8 [; ~5 o) l! g
set customer nobody
, F. H! F9 v; q9 y7 Nset credibility-all n-values people [creat-credibility]
# ~) C2 A0 h( tset credibility n-values people [-1]
, {6 a. m2 d  J% p" M+ t) h# Lget-color
; N# W# W/ X6 u, ~% L

0 P2 [8 f$ O/ u/ a4 {end
9 _+ \% l* A+ M+ _! O0 a5 ?7 T/ c3 c# ~/ i' G9 d( [* f* s  j% \
to-report creat-credibility- Y5 w3 N8 [4 l: Y5 t9 `3 N
report n-values people [0.5]
' |( v( F. V1 N; d) L# M& U1 {0 pend3 N8 t# k& J, K( Q6 R& V
- }$ C1 h/ z. G8 }
to setup-plots# j& b. x( m. f, l: s

0 q& |5 N" T) m7 a+ Eset xmax 30

: r, x! \% }3 c7 b; Y$ X
' s. w# e, [2 Rset ymax 1.0
9 i% ?- L8 m- o
1 w# U' i% Y* j, Z- T
clear-all-plots
# Y# m# D' D$ Z  v4 \2 ^( [2 A
8 E' s2 S7 A# u! ^* T7 A  i& v- V
setup-plot1

3 `' u" }% q5 _; d: \- b6 o8 u6 h7 Z: e% S6 j4 w8 R5 u8 u
setup-plot2

) M" x9 Q: K* m
2 \% U+ B/ v5 T! s2 ~setup-plot3

) m- I2 E" }( |8 W/ |end
" m. k4 C$ A" q& o, @8 [0 H# o! Q4 s" H  E
;;run time procedures& B, T* c& O+ O& G9 N
" J9 ^+ E6 Y( L  {+ B7 a$ y/ Y7 x
to go9 o  D* i- _! c+ j# O
) |' U5 ~3 Q$ a9 }5 }
ask turtles [do-business]
" [1 t; y* S6 i
end/ U  T% X; A9 I
, Y- ^( V( ^' f* ]
to do-business % _3 G7 C! K" P" I3 j; p$ {

* F4 R4 c" n$ Y  Z
7 g# R5 H2 j  y1 Ert random 360
9 {: V# ]) k$ P: C/ V
) j9 v4 t. G1 K" a+ }
fd 1

5 W: [3 P3 T8 O3 T  h9 F( l5 e& O2 C( L: S! y" K
ifelse(other turtles-here != nobody)[

0 r7 b! N6 g7 ]4 \' O# s. U( {
! i1 y; N4 \* X5 N  d* M8 w: Pset customer one-of other turtles-here
2 X- Z# _3 Q8 M/ Q. s8 J- Z

5 e0 u/ m: ^( O3 `;; set [customer] of customer myself
, S1 X+ m; l  @2 X

; W8 ]  L) c6 T$ h7 S/ O+ zset [trade-record-one] of self item (([who] of customer) - 1)
% Z% q1 k7 D. x6 Z! B4 v[trade-record-all]of self
6 h$ Q/ z9 j0 ?: g/ H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! D1 Z) T' w& T# n, Z; B, v6 d9 A
* P  c5 u  K3 z/ }  hset [trade-record-one] of customer item (([who] of self) - 1)
/ H' N' C: J4 ?9 L* ^9 c* _[trade-record-all]of customer
9 ?& F! O  N4 C" X/ l

8 D4 ^4 {4 w6 p: u+ S* k" Hset [trade-record-one-len] of self length [trade-record-one] of self

2 k, e( b2 ]+ B$ I/ \3 }  {% W/ v- ]6 b. U' X8 Y; L
set trade-record-current( list (timer) (random money-upper-limit))

7 b* J; N9 a# v6 n; ^5 H: o1 n: G7 `$ T/ i
ask self [do-trust]( F0 q& j7 l7 K; }3 M% a) f
;;
先求ij的信任度# K6 ?: m" e# X" k, S2 b9 a7 e1 B

. Y. s; U+ o/ D0 X& Cif ([trust-ok] of self)
. c8 n  ^+ {$ n;;
根据ij的信任度来决定是否与j进行交易[$ V& U% r# @, n4 B! o9 T
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, m: A" f' K' S0 g$ |9 h
4 \4 s. k- Y; x5 H* T, i[
1 ]7 e* _( ^$ V
4 ?. n$ a1 c2 h% t# F8 [
do-trade
. {+ l0 Q2 ~+ m  W8 _: e
5 N5 ]/ s( F( S  s+ Q, H/ N+ ^4 @
update-credibility-ijl

$ P7 U- r$ X8 z9 d: ?- h" ?- _( }& `+ F; j* M, r
update-credibility-list
( W) n1 E7 O0 V: [3 Q/ R5 `
( d& q% c( i7 ~* V% q3 F

* G! y. p0 w' |9 t: A6 dupdate-global-reputation-list
( T% s7 H" e4 L7 B, c- n
7 b. w% u0 |9 V
poll-class

% [& k8 \+ s7 P$ A; @' {# Y0 O6 i8 H. r% W* r
get-color

& A! c3 N+ d( G% M! L3 ?7 ~$ n' S+ ?2 t+ [; ^$ ~
]]
5 q, `* E) i! K: x* t8 G& B) C$ N% E& O% N% C  w, a3 z4 z1 o
;;
如果所得的信任度满足条件,则进行交易! I* }  r! Y) C; O1 U

- `! o- h/ u' S[

8 c8 o8 {6 V0 n$ o& e: _, m
% O# i* S2 Z1 J+ K' M8 G& b1 Frt random 360
6 x+ T! ]+ K9 H8 O& E
0 x- s1 q' K3 g$ x7 l1 p' I5 \
fd 1

% [. S. U: c4 a6 F( z- H3 @
; A/ x. z+ T; b2 B# _- U! O9 x  {]
8 r, a. a( ]% }7 X( s8 k
3 F& w+ |/ C, g" [: J
end
: Z3 q& D6 {: {% \% Q

9 \3 H+ e4 b$ h) U0 D/ pto do-trust ! g9 d; A& a) _; [- A
set trust-ok False
8 s! V3 `: Z4 ]+ I1 Z0 m! N* a( u
* Q) q+ M7 y' Z' g4 b9 A/ o) M2 u
/ |  X- Z$ U6 W1 ]
let max-trade-times 0
. e; N5 \, |" O5 K8 nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 }: X& m6 D# m" x/ N/ v) clet max-trade-money 0' m# q: q: B, K+ Q( c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) j! f% ^; S3 T; _! W6 b' u- rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ p/ {( g) H) P3 @2 r1 y4 n2 p9 {( h
1 t& s/ G: ~/ ^% d; C: R* L- }8 Y
get-global-proportion
( V' c: k. h# d% D( q0 rlet trust-value# w: x  [' b4 l6 A' A; s0 \
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)

) x( D9 W) p% Nif(trust-value > trade-trust-value)7 d' e9 t( v7 i6 U( z+ t: O) U. d) o
[set trust-ok true]
+ z: \; U8 |" Iend' o' O5 D9 x5 ^6 _# }: E" p" Y

' y9 w1 N. l/ f! l% Bto get-global-proportion
! L) ]9 `" H$ P* zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. g3 M6 H6 ~6 G  P9 I: J[set global-proportion 0]/ O/ A* Q1 Q# i1 h
[let i 04 N( p% G7 ^; P5 p- w  h% t& n. [: C; V6 c
let sum-money 0& r# Y# S0 N$ C5 Q  I/ N- ^
while[ i < people]
9 Q& a4 ]5 J, @7 s: I[
2 T- W# w7 P6 F) t6 R. S! h8 b2 @/ h0 eif( length (item i
: u0 e- N4 L2 N' E+ _+ \[trade-record-all] of customer) > 3 )

2 [; X2 F. w. c* w[
: R4 V5 H6 I3 Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 Y2 z: F& P- S. d- ^2 S0 X! R
]
7 g$ d( X! W/ z: n: e" t]: `6 W) \- n* l* q4 m$ R2 j% u
let j 0% A7 P  q3 Q/ E7 r8 P. Z2 ]
let note 06 b0 @, H; U: R1 C0 ?/ W* d
while[ j < people]
6 {/ k) I) x. v* ?9 M! |% u  l[
. x8 G  x; N/ g- cif( length (item i
( L/ }' S7 Q& R$ Y0 c3 ][trade-record-all] of customer) > 3 )

2 a( X6 U- L3 U% |2 _. E. m[
5 q! }1 Q. T/ Sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ ?! L4 w* |7 Y# s; q2 ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ \" A- Y+ X% i6 |  a- B  o3 g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! J. Y/ P  L( H
]
" V2 h/ y6 r, \" B]
! N! n# X" w' ]set global-proportion note
2 k0 Z* |1 t: w9 k+ M2 O. t3 ]5 ]]# E8 n% `( h' |
end
" U; D& e6 \! G4 n+ m3 R' h" O9 m& O* D. @
to do-trade
8 o6 I3 ^9 m7 z;;
这个过程实际上是给双方作出评价的过程
3 o8 l' z2 o9 {" H: Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 h9 o/ H& ^! X$ V' G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( n) I( R" O: h3 b
set trade-record-current lput(timer) trade-record-current. \) L  e4 M5 ^0 H. \3 n
;;
评价时间
4 Y2 T! R: t2 t. Yask myself [
. d7 ^/ |3 J+ fupdate-local-reputation" H- p' p' d+ l) e( B- a$ q
set trade-record-current lput([local-reputation] of myself) trade-record-current1 R; C  H  d+ L7 k
]5 k  n1 y& ?3 d, Y* b5 h) d$ ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 i! J8 M6 g' i6 w;;
将此次交易的记录加入到trade-record-one# i/ @$ h2 T& I2 B
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 i" c( V9 J; _. @$ ?% c: \let note (item 2 trade-record-current )
) w; [& D7 U! _( Mset trade-record-current9 b, M9 V! I9 K' c$ q6 y
(replace-item 2 trade-record-current (item 3 trade-record-current))

( Q$ F4 o1 v2 K6 N! a5 V; D9 ^) Bset trade-record-current
1 Z( T( z1 j. ~5 R) U1 |(replace-item 3 trade-record-current note)3 G3 S  S0 A1 O1 Y  j

# S' l( u" X* S% P
/ H# W6 X( K) b5 ]# C- o. p
ask customer [
! s3 |2 C6 x4 b+ L# Yupdate-local-reputation
; p5 }8 v8 f7 ^8 J! z' nset trade-record-current4 [3 G& I, p9 ~' K
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 C# s/ m; C, Q  q  w! l' Z]
4 v# n) e( P1 G& I" o9 o8 t1 c
; p9 D3 A* }. g6 P% k

# r1 {& d8 O: I! u/ g2 Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 L3 K* V" B( X! J( Q
' b- S" i+ s9 i7 G" ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* I7 {5 w* u: h# ]2 |/ w
;;
将此次交易的记录加入到customertrade-record-all
/ w8 G& {# u- ~0 t( r7 Q2 j! Zend
- V/ s2 i2 r+ |8 J9 a. }" e
) \) ^8 K7 \" N. t1 N1 }3 f0 b1 }* _# ito update-local-reputation8 ^- Q) |% C$ c' d
set [trade-record-one-len] of myself length [trade-record-one] of myself
  f; A& S# ^6 d+ M8 _; t/ k/ I- X7 w, _1 h  [8 s/ f
# O# [& u, n5 G5 L5 w' [. U
;;if [trade-record-one-len] of myself > 3
) i8 u0 ~; t# s9 l& D( w( t
update-neighbor-total
& f2 g( c+ w  d0 \! Z9 L;;
更新邻居节点的数目,在此进行2 W. c# [" M; o
let i 3
6 |8 }  V/ }* M3 _let sum-time 0
' u! I. p0 f) D# G* p3 N* `while[i < [trade-record-one-len] of myself]* {# x9 ]1 ?4 x; h+ \  Q1 K9 x
[
# C; Z* p. `4 K3 H& Y7 s) r; ]# Tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* D- D% a% q* ^, k( }
set i
3 B: v/ h) S& P8 r4 h( i + 1)

8 |& n1 B# D; ?1 q# I# d7 |/ K]% U8 m/ G; |- W" `4 q9 L8 s
let j 3+ R' j5 Y. A3 U  U
let sum-money 0
. Q" N6 @' F* hwhile[j < [trade-record-one-len] of myself]
: A. h+ w1 P  \1 \# d[% U7 O4 B% f6 t, H# u; T7 `
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)
0 p( T1 ~; B6 p$ R: lset j" v/ ^- }! M* H$ W* y) r
( j + 1)

5 W8 w* w9 O% T4 F3 ^* U1 q]
4 `2 x5 w" d5 X: Q7 nlet k 34 p( `2 }; O* y0 h- k
let power 0
) d% t' K: t5 B# Slet local 0
: M  K7 [" W( O9 |while [k <[trade-record-one-len] of myself]
( e: a1 b- {6 z[0 O% I2 ]1 c* t: ?
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)
% l- R5 l$ s8 w/ aset k (k + 1)( p$ b0 W9 C7 R9 P3 {
]3 Q1 H. _5 C; O4 @0 _& ^
set [local-reputation] of myself (local)
; p4 {* R% @. V8 I8 F  ^end% Y) m7 z0 w, C4 J( y4 M; j

/ E$ P7 x1 g4 U, gto update-neighbor-total: g! x" \3 R# B' o# V& @

' M' u. j0 u' m0 U( X% _if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 I. O# `% f, q% C

4 z) _+ [: _! A- z( R4 U, I

, v4 s! C5 w, t( H! Dend
# d0 u2 g0 E- {: i( }1 j9 K2 ~+ c  R% N" `
to update-credibility-ijl
/ r  s' c- i  g' z7 V
( F* ~/ Q7 H5 ]/ I. W4 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。
$ E7 D# ?2 I  d1 V3 [  g9 slet l 0
* ~5 S& j( H( K8 R: Uwhile[ l < people ]
/ t' v% [" T' r( P;;
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, N4 W& ~: {0 E$ n# L/ e: t
[
6 D! C/ C5 ?' ]let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 P0 S3 q% r* p* @7 R6 jif (trade-record-one-j-l-len > 3)
6 e9 \0 }* f; L: z[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; b0 }$ n5 p$ p9 \! M9 [
let i 3* W9 D  w  B1 m/ y
let sum-time 0
1 w8 f0 U5 Y2 L; e4 [+ e: V( kwhile[i < trade-record-one-len]- H$ G1 W: g9 P/ f+ v7 Z' G
[. H$ b4 `% K- |9 l5 d3 f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: b+ c2 z  ~& o, v5 E1 m2 ?! Uset i
% _. Q2 v9 S) W( i + 1)

- p. c$ F$ f( A, T]
5 \! [; f: n; |' _let credibility-i-j-l 0" U& O+ b7 h: W; q
;;i
评价(jjl的评价)$ r2 a! A% h, k3 j
let j 3
3 K; b3 s/ E. Z% I' t8 i* Olet k 4
" U! }1 Y$ y$ N: _: Q0 Kwhile[j < trade-record-one-len]* M1 I' h/ P8 r+ F' B$ o
[
7 h' o$ S/ \6 r  g' w% twhile [((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; n; R" N2 |, ]: A
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)
* A8 p' ?/ x. q, R9 _set j. s3 w' V' L* W; s. @. `" T  P
( j + 1)

: b% M& v% }. c1 p' r]# P+ @2 g1 d3 {/ 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 ))# D# @9 |! r; Y: }$ S

. J* p0 P6 h9 g$ m# U8 P8 j
* w, `8 u' N4 P5 ?3 j8 A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 T9 I/ E3 ^/ _0 H;;
及时更新il的评价质量的评价& t; R/ U$ }4 }$ t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) n$ B% Z5 Q/ @set l (l + 1)% e) B/ W% F7 k
]
2 ]5 b7 _# I9 {& _( }# a% xend  H* F+ O' G4 q: m4 @
4 A( R  Q! v- x8 x- P6 t) c
to update-credibility-list
* i, j  S9 s, Alet i 0- E( k8 I( ~$ l# |6 E4 V: `( q1 l
while[i < people]6 d  F; x& M( Q& j& d
[$ B; w4 _- F# K7 U+ j- C: l- E( I
let j 0
( M% j0 y; D! @  rlet note 02 |7 T5 Y% l# [  g" P
let k 0( A2 ^+ n  s: y
;;
计作出过评价的邻居节点的数目; O4 i! y& p5 v8 |
while[j < people]
# Y! z! B7 S5 n, `( b7 k[
+ v0 a: E( w  b. J! k7 Z2 g$ f3 j0 ?+ N. yif (item j( [credibility] of turtle (i + 1)) != -1)
* A' O' I* A) P9 z;;
判断是否给本turtle的评价质量做出过评价的节点2 C* Q" W! s4 o
[set note (note + item j ([credibility]of turtle (i + 1)))
0 k% x$ p; ]5 N8 {6 z2 K" C;;*(exp (-(people - 2)))/(people - 2))]
+ X3 R: b. X! c: \
set k (k + 1)' j$ V$ ~# Z4 f  E* [# z
]7 `7 Q% g# _, M1 \2 H
set j (j + 1)
5 J. ]/ g9 s3 z% |; m2 G. e$ b( J]# B1 Z, ?, I) e+ D4 b
set note (note *(exp (- (1 / k)))/ k). k. H# |9 w8 ^- {9 a" q. w
set credibility-list (replace-item i credibility-list note)) ~; t; Y# D3 ~# x" \- t- p
set i (i + 1)
/ C8 n1 D( T  O5 |1 ~0 j]
3 I3 b/ _+ j' {) lend" \  ~) |7 t  \$ e
* x  n! {/ D0 `6 c# z* |
to update-global-reputation-list
% V. w! Q# A2 z" j  Y! Jlet j 0- }; K) E( X$ C8 u
while[j < people]
4 A* W4 J8 O6 ^+ n" i* ?[
3 b. z) d& A1 s/ K# X5 i/ l/ rlet new 08 F% e2 f7 c. ~6 |; [/ h
;;
暂存新的一个全局声誉' ^2 P# }  w- E6 e' q
let i 0/ I! C) T5 a, H2 ]. ~+ c6 J, V
let sum-money 04 b; c2 ?  D$ R% ~1 ~
let credibility-money 0
/ s: M3 @6 Z7 X2 l# awhile [i < people]
  Y) Q3 i# i" E! I6 e[0 T6 x; ^# ], i  T. E5 r; L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 n+ R4 W& `4 J5 k. j3 O
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  [5 T0 \! e# t; Z7 yset i (i + 1)9 ~8 z/ a5 g' D" L
]! k: G) o/ S8 j9 W2 T" d
let k 0# U! ?* n0 g' I5 @
let new1 0
' w# R1 \# p; k& K$ Mwhile [k < people]( j2 C, c& w. u) r$ _( \. Y0 ]$ `
[
# {3 a, S' Y7 S$ w; |; {2 x" ~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)) }9 a5 N+ {6 T
set k (k + 1)& d7 F& O. a' X! }
]
. A' E2 [( I% x3 ?+ W( d, L9 O5 Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , P. B/ I. ^4 G8 j& C8 A' {4 g
set global-reputation-list (replace-item j global-reputation-list new)
2 L% V) {$ p& w% |7 _8 Rset j (j + 1)6 w* [# }! r! u! E, v* h: X
]+ }, a$ `5 c1 V( J( t5 v3 u
end
8 @- ~5 e- {) Q# P& [& R# I4 H' b) U! [) H5 M6 H) [. j

4 z- K9 f+ o/ j# d7 I' K% p6 v$ B1 x7 O
to get-color7 O) [: [2 {( l9 P) O' l" z& s
; V2 f- Y$ [( Y! Q  x$ f
set color blue

! a3 L( t; [% p8 Lend  r6 ]. `$ W# [5 E) R

3 e+ Q' O7 N- Mto poll-class# G: u; a' E5 v6 _' `$ j
end8 a5 t8 H+ q/ r/ I
- W3 R$ Q3 I9 {1 a( S4 }7 p$ W; k
to setup-plot1
" I1 T6 E( f; l* @4 \) Q: f4 X0 a% l- P1 q9 @; Z
set-current-plot "Trends-of-Local-reputation"

9 J  |6 C# h" q
( o( X. Z9 U: I8 p) P) E% S* O6 n1 eset-plot-x-range 0 xmax
$ i% L, I: S/ A5 p% M4 x! z

$ i# Q8 j4 W8 d$ q# @! wset-plot-y-range 0.0 ymax

+ [, L( Z7 @( y# o' U2 O! Dend
0 S& ^6 t- u$ L1 c
5 S& X) O) K; W  a6 Pto setup-plot25 f1 E) ?  {( z( j

, ?* t& ]; n, h' tset-current-plot "Trends-of-global-reputation"
/ m' i5 e2 F( l! F; B6 a& T% U
, z; J4 f* ]) h7 E  Q# [5 j
set-plot-x-range 0 xmax
* w1 a8 m8 X5 ]7 P9 \2 _

: Y! \5 o" T& x$ Tset-plot-y-range 0.0 ymax

5 S0 V% k: {: h: g- h$ Jend3 e- S, \% G8 n
' R# F) N; U2 B  @0 s9 c) }
to setup-plot34 X! d4 D" q' W$ ~- F' x
! Z" |6 d' ^, @- t
set-current-plot "Trends-of-credibility"
8 p5 Q9 O$ l2 d, a& ]' H9 ^

# V0 D# f  z' i2 yset-plot-x-range 0 xmax
) `( `" Q9 m& s( n

6 }5 [8 Z9 N2 x* H' hset-plot-y-range 0.0 ymax

$ h5 m7 T6 w% u$ @& v5 t+ lend
( O" k% R8 n9 u" `, ?/ B- D
& s9 g0 c$ ]* w% g* Fto do-plots
! B# s5 V1 P: Dset-current-plot "Trends-of-Local-reputation"
- e; N1 z( F* n* ?. F* Yset-current-plot-pen "Honest service"
9 x. [4 [: Q; n7 P( {end
9 l% I1 x; ~$ L! D! ?3 R. S* A4 F$ G: S9 F
[ 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.
* U9 B' O1 ~5 q) [. x, \: z' n+ B' K$ n) u( K. U  \9 W
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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