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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:" o8 z; U" v% ]! U' ~, y2 R. b
to do-business
& H) \, W, d0 R! E5 G. ]/ L rt random 360- U; G; r9 A6 {/ _' N8 f5 v2 l
fd 1
" X& V& ]$ y& W ifelse(other turtles-here != nobody)[
9 J' t' r# Z! l   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.
# [1 s( O% Y2 e4 Y1 o   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. K% i9 u8 J) \4 ?0 @$ E   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 c# e  h5 ~$ h; _0 C   set [trade-record-one-len] of self length [trade-record-one] of self% q! Y/ p0 B1 }* D# R
   set trade-record-current( list (timer) (random money-upper-limit))
9 L+ f% L# Q2 V5 N7 F+ s4 t4 I  N0 X  |4 k$ i' J
问题的提示如下:
" [6 k+ v; n  L
( n4 P- q* {3 f( Aerror while turtle 50 running OF in procedure DO-BUSINESS
( I+ v2 s& y$ x$ i  called by procedure GO+ G' l; D3 ]4 a& P- ?8 @' b
OF expected input to be a turtle agentset or turtle but got NOBODY instead.+ m( l1 S& R" p' R0 }2 l* C# W0 `
(halted running of go)% z) a+ B) W( V; L9 t$ b7 l' Y
" L; i( {: h9 Q5 s" N) R1 [
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~~) _* ]9 k! M4 A' E
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教. U7 \3 p, C# U! @* F& B3 N9 ^
globals[
, L' \( {  ?7 L9 Vxmax
( K9 L$ n* K" X' D6 m8 O4 Lymax. b- z) c$ [/ S- q7 }5 }
global-reputation-list9 c/ [1 @& a+ t8 ]: E) t2 k

4 u9 r* y( g( {/ }4 {" S;;
每一个turtle的全局声誉都存在此LIST) K* z3 f' Q% `# f
credibility-list3 K2 N% H3 n0 s5 O
;;
每一个turtle的评价可信度
# D0 {2 |8 A- s3 w1 @honest-service
* {( |) t0 J2 X. z3 qunhonest-service: u  Z5 r* v2 e' b+ Q( y1 z0 |
oscillation
( C4 g7 L& ~3 ?6 Krand-dynamic
: `8 j3 \* b0 g/ ]) @6 f/ w2 k]0 D$ v( T  H" \5 K* _4 @
( D6 j6 a# T! }3 i  }8 o
turtles-own[9 C7 H& J1 s4 \+ h8 N
trade-record-all" t0 d6 E% _# h5 J; O+ F+ J3 E% h
;;a list of lists,
trade-record-one组成
( z% x2 \( E9 Qtrade-record-one# K- ^& M- P9 z7 h) k& J! x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
$ j' F$ ]  c+ B, Q& k. B; Y- J& N  E  B  x5 Z; d
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
7 n8 P! M, {$ Q9 v* ~+ j1 o' Etrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
; B9 s7 y' B1 M0 I# a* zcredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list; h: |5 ]' p1 C: |( y
neighbor-total; S2 R: R' L. b( N7 i; N5 l) N; o
;;
记录该turtle的邻居节点的数目
% i$ k% r/ b: e' E' gtrade-time
$ W4 h9 u1 j. ~) P;;
当前发生交易的turtle的交易时间
4 Y& a$ S8 a) g" u, @6 e- ~appraise-give
; w! z" ~8 Z/ x;;
当前发生交易时给出的评价
! s% n2 p# I; B7 m8 q4 B9 ~appraise-receive
; p' z+ ?, P3 I2 j0 ^! V! j;;
当前发生交易时收到的评价6 t( |, w2 R; ^3 n
appraise-time& {( j+ O  f# |0 p5 G" D. ]  ?
;;
当前发生交易时的评价时间
2 W5 R/ d! A; F% O) \2 `! B5 F: I1 elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 r/ \) X5 {' k; Q. _( {! s" R
trade-times-total
- I* \7 R1 J) t# [! G;;
与当前turtle的交易总次数$ [' P- K* X" u- W* L
trade-money-total
. ^* q& d- ~& `0 z: e* i;;
与当前turtle的交易总金额- y& Y$ k  [( ]( m$ S
local-reputation
. V! `* k9 H0 D5 G! h* u3 l- Iglobal-reputation
) r: N/ U4 V# }& n* \% v! Icredibility8 L4 G9 y4 V# q
;;
评价可信度,每次交易后都需要更新
% _7 B6 ^: f9 fcredibility-all
( E' E, v; S2 e;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
4 l- R! o- {2 p8 q( u" x" P
  {/ ^( t3 G5 t0 V- a6 {;;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
8 p2 @. ?& d$ H$ S; v6 [" lcredibility-one" o, F) w4 |. i4 x1 w
;;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
# b+ |) ^; k5 _1 @global-proportion" y  E: v. c# ]" u3 a  x1 P
customer
) T0 u, |+ y* w0 ucustomer-no5 m, Q% V1 N8 j; O% S
trust-ok
4 ~- ~( u5 w+ m/ B5 q6 _trade-record-one-len;;trade-record-one的长度% z; {3 x+ h# L$ F0 s7 a
]
8 ~: A0 e7 J: U( \0 h- S  a& B0 s1 Z$ z3 M  W0 \
;;setup procedure
- p+ H, o' C! e; V/ F3 U9 _7 t7 C$ S# v$ Q9 a; C  f* q1 i7 n
to setup8 n" `$ Q0 N+ R  s; r5 Q

' r( u( D: n- A$ P. yca
+ [0 t, a. m/ f% z5 g7 c

( {0 J9 j- Z8 k" ]. }: }( `initialize-settings

! b; b. K5 E% k* p# ]$ e/ q
  |8 m  W/ b( x0 q. Jcrt people [setup-turtles]
% V7 a; O3 ^# ?: h) ^8 @0 C

: u) \& q6 O9 z# Rreset-timer

1 K" O' b5 B/ z( f( c
# _& b0 ?2 E$ e: ~poll-class

  A/ s2 I  j- t3 h: `: X, O( c" q& v; a6 v
setup-plots
% o5 H7 M0 o8 P- P; e

* h# q" ~0 p: c6 \% O/ X# T; ?do-plots

: B) i5 `/ i: F1 X/ n4 d( ^end4 C5 c  l4 J- u
# A/ m) k. C( O9 n; M( l
to initialize-settings3 }/ B6 E8 B. }' ]( ^' U7 A7 y- t6 p/ q
9 l. Z- z# {' u4 h& x) W
set global-reputation-list []

4 Z6 S0 a; l8 t% D, Z. I$ Q* @6 _: R6 U& t( b
set credibility-list n-values people [0.5]

' c, @6 M7 e; ?! I) C+ d7 {* a+ _+ Z& |! W8 k1 y
set honest-service 0
( C( G: t0 ]! K' E# O2 w
' z7 |" [* y4 a6 U
set unhonest-service 0

3 K8 K0 O+ U7 [  u9 E4 h. m; ^5 @. B
set oscillation 0
4 r* ~4 `/ t/ V& ?+ o6 h8 M& D

5 m6 J( B2 `8 I: Dset rand-dynamic 0
0 f. R0 l- A1 ~0 c8 D9 c
end
$ N3 x9 u. p! A6 t5 x: i- Z! Z1 F' ~
to setup-turtles
" W6 r. w! z7 l* L$ {2 A, fset shape "person"
+ F* P3 w3 j% ^setxy random-xcor random-ycor
6 H$ [6 O6 H4 e' J6 nset trade-record-one []
& K( D& o' a" C, T6 q
& B# y2 a& c8 D
set trade-record-all n-values people [(list (? + 1) 0 0)] ' T: b3 i0 e6 V& O
( Z5 \; z! a, \; }8 C/ Y$ i
set trade-record-current []8 c0 D' U8 B4 H8 d, R+ A
set credibility-receive []
  |/ j$ H0 H& @# bset local-reputation 0.5) t+ D$ [+ @/ g
set neighbor-total 0
# \+ L9 ]; |1 a! k3 mset trade-times-total 0  d* H* _' `/ M  V% l) U
set trade-money-total 0% r& v: |. c. c1 Z' [
set customer nobody
' L3 C) x& m! q( B$ Oset credibility-all n-values people [creat-credibility]
+ {4 }( b. [3 eset credibility n-values people [-1]
! L: {3 M9 i3 H  L3 a7 c( D2 N/ Wget-color
3 E: }# N: o, ?% N  S  R/ _9 w

" p1 r9 r* k9 L) [end# ^8 `/ h5 o8 X0 ^. {2 F* }
, \% P' \* X. Q! X
to-report creat-credibility5 \/ f; S6 }; h. q
report n-values people [0.5], G$ M  |1 w. q, R
end/ ]$ W7 W$ v( d* D! o

6 p0 o8 E3 |1 p5 p1 dto setup-plots+ B# _2 g5 G3 @$ d' U7 d9 I

! S) ]* _& P  K1 Q; S& Sset xmax 30
, K1 Z/ v- _: s$ C

# d. q) e3 ^( }: gset ymax 1.0
$ H# _8 a1 T1 F- N% h& U

; \9 h4 p! H( Jclear-all-plots
+ v& i0 p, M" i9 @) r
0 o7 a9 w% m1 s
setup-plot1
8 c, m. `3 O' I" N/ d0 r

  t3 I) k, Z5 K3 \+ @/ ysetup-plot2

& A9 t, t' u- W
9 x8 z0 j4 w6 ]; isetup-plot3
0 X+ `5 X8 w$ c$ H
end
7 d5 w4 i  ^% F- [/ R% W/ N" c; [" [' f4 w7 }! E* |- r
;;run time procedures- v1 c( `& L* {" F( R

! d  s( ?+ F  P0 j/ r4 oto go
; j" s+ B; n1 X$ ^3 A* S
9 V3 b9 r3 M" rask turtles [do-business]
- `0 Q, C! h' `! t! q; o
end
/ h9 T: k5 ?! |, M4 F9 S: T  y7 h2 c& s& P) K" r1 C
to do-business
7 G* w% ]3 q; T; [7 _

2 q( _' r5 ]" X8 I
( @! g' F( I, N$ @2 srt random 360
9 {' i7 J( J8 c0 b' g1 X

8 Y+ e0 f# a/ Wfd 1
" b) |5 C' v' V' ]; D, @! q8 l

& J: C! Y) n/ D" s6 J. mifelse(other turtles-here != nobody)[
3 \8 r2 h# U; b* S1 U
0 R: U  G+ G5 B% h7 D
set customer one-of other turtles-here
8 C4 X3 y2 ?0 ~3 S5 a, j

1 G0 {) }5 i1 O9 j" }3 x+ f5 p8 L;; set [customer] of customer myself

4 L3 R! z  r+ H5 a. E) \  f/ f' K- |3 f0 `$ U, @
set [trade-record-one] of self item (([who] of customer) - 1)
0 b8 [" m. C4 P/ Z8 x; j+ V0 ]0 Z[trade-record-all]of self
+ g0 i% v' ]* b4 K6 e! u7 H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  |3 o/ u  d$ y( U, E

  V5 W9 c6 o4 b2 mset [trade-record-one] of customer item (([who] of self) - 1), k" h  p7 J7 v
[trade-record-all]of customer

8 @5 ]% r  F3 h
5 e6 }. r( @1 x, s. A9 M- G- N7 kset [trade-record-one-len] of self length [trade-record-one] of self

" j$ j) Z& a2 Y+ R
' m  j1 C( C* W3 }- G% cset trade-record-current( list (timer) (random money-upper-limit))

9 w# e: Y2 K1 U& P7 B4 x. a, j% a0 [+ ?
ask self [do-trust]
$ `# E8 D- y. K# o8 @- W9 s1 I;;
先求ij的信任度
3 I$ u/ x+ s1 B- P' u
! e& Q7 Q6 i) }0 u4 O: b9 Vif ([trust-ok] of self)
/ `' M* _$ w! a2 _5 D;;
根据ij的信任度来决定是否与j进行交易[9 x# X+ ^! n, T, h' ]) ]! O! q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 W. w& l/ o5 N3 P
. @/ |! n. }( p* H  p' T) l" b[
/ I4 t. V. \2 x& B, G# \  \& N
, n6 h, V( z/ [: R: z
do-trade

; g5 T! m0 }! t, E: p  z% a" ]- R4 F$ t
update-credibility-ijl

; y! ]) T0 j; H. R- N# V# ]5 K
  W/ b6 f* R- |/ Z2 j9 C, [5 qupdate-credibility-list2 _6 h# b3 U/ w$ u+ I- f( C

3 p) D% l6 ^+ L7 l" `9 V8 J" p
! l. M* J5 W. {: @update-global-reputation-list

) P* v, k- h- r& t8 m% C8 H3 j# V9 G& ^1 h* x7 [/ x
poll-class
# `3 N& f) c4 d

) X9 p  \: @" oget-color

. R" p3 E4 {" a/ S8 S
) d! [# H" D- n: z5 f3 o/ F; J+ g]]
0 y& _1 R( J6 a! [. r' A: _  e& J7 y# H9 t
;;
如果所得的信任度满足条件,则进行交易
. ?$ H7 Q5 f2 F  ~% c2 Y+ f  x# S
) F) K$ n% p" w; o3 a[
0 ~0 ?! @! t1 }9 Q# `

4 W2 t' U9 R9 A- ~: p1 Irt random 360
; r) o, O0 Y2 |) l6 W, v' L' _
# U, b6 E% }- w; q$ Y
fd 1

4 d; M8 c# a$ U
4 \$ H" ^- _3 S$ P8 e/ t* ]]
" g  l6 D5 v' N

* b1 |9 h. o$ D! L1 {( ]: }. nend
2 g& e+ h7 N/ F! n

, A! [3 \. @. T5 f7 kto do-trust ; P' A) s7 N- k  [  T, w5 g- p$ E  L& l3 z
set trust-ok False
3 z3 }+ P& N- w+ g: Y4 W7 h; L# l3 ?
# y  a& |0 Y' ?8 |
let max-trade-times 00 M5 @8 d1 H' ~! g4 A
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: ?2 _$ G0 n  a* ulet max-trade-money 0
' M8 @) u8 u) o( D" Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 |. n1 ]! }, ^4 \7 M" llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 ^  U" }1 R, C: N: a6 i8 p+ }3 P3 ?1 Y. x. W8 @
6 P' h6 ~" A' l5 d7 E6 u- ^
get-global-proportion
1 m. j# |- Q& g7 l9 x+ \5 {$ ~' w7 {let trust-value
6 k( M2 y6 V. ]3 L+ p2 n, Jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

- ]+ C5 q% f- A6 gif(trust-value > trade-trust-value)
: i2 _1 T  z/ ]/ w' c/ k[set trust-ok true]9 R5 i: x/ t- u
end1 Y0 k: S  o" p0 d
7 C, m% H" m9 J9 l4 T
to get-global-proportion
- p) a" |4 Y( k% |' ^( Oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ l, ~- G6 Y" |# L) S& Q! ~2 k* ^& B. q
[set global-proportion 0]- T3 [' g- [  C9 L. H; s3 A
[let i 0" b9 I* I5 b6 O; q& |8 b% |/ {* V, t
let sum-money 0
% ?- ]- l. \: m  ewhile[ i < people]9 I* b$ k0 ~1 @4 R2 n
[
( Z- s  g' D3 J5 s- q# `1 j) b1 lif( length (item i$ P1 O5 R& K; I8 t$ Q9 }
[trade-record-all] of customer) > 3 )
. r' o( e. T( n" S1 i2 c& `0 v0 `+ @
[
& M* c. J3 U$ w% t; X6 }6 [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  n1 m2 a- @5 B9 `]$ Y3 I! s) T8 I
]7 s0 Q0 S5 s* M6 K" d0 r
let j 0
; m; m& @' G0 a  c/ W, ^let note 05 b7 N  D7 _: [) H% ?
while[ j < people]) _* b- _: v) x( O
[
+ k0 i3 ^' `5 {( U" \6 n: k; qif( length (item i
6 q3 P+ h) y9 l9 g6 v1 Z% l[trade-record-all] of customer) > 3 )
) M/ X, n6 F) g
[
' B* a& @- J7 W; W) t' Hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). P8 U  N; W- X. D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 u; |) T4 D4 Q0 K8 y* o2 H. G1 T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' {7 |- J9 [/ p) m. O5 S  j' U" x
]
7 s4 x' {2 `& {2 p6 X]4 f% x# W+ ], p* R
set global-proportion note# [+ M* o3 n. f  h+ g
]
8 B6 w' x- P6 W% G* `$ D  bend
! Y9 I  j2 f( t% h" E
+ l. n, B3 G& D! I3 A+ ?. ^4 jto do-trade
+ ~7 T/ [3 T  A1 q;;
这个过程实际上是给双方作出评价的过程
. u6 u( c- u/ C1 F8 _( j+ L9 Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 F# [# o+ Z2 A/ s" k8 V* J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 f; S: N/ L4 F! tset trade-record-current lput(timer) trade-record-current
- N* _, z# Z; D;;
评价时间
( T$ P- V7 j" b2 C9 ]ask myself [$ Q, c$ k, G) Q7 L, @+ ]
update-local-reputation
: N- C. }$ B" }9 Sset trade-record-current lput([local-reputation] of myself) trade-record-current- m7 u( c+ }" m+ V! a% a6 q
]  k& `& \' ?+ J  n6 o, }, U
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( ?' Y4 I) {% G3 |: U
;;
将此次交易的记录加入到trade-record-one' j5 Q0 T# L$ g1 ~" u1 b. I3 `8 x4 e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' f  A7 [4 C& K# H) dlet note (item 2 trade-record-current )
2 F' n! }# C! H$ Uset trade-record-current
8 q; T  N! s5 m* h(replace-item 2 trade-record-current (item 3 trade-record-current))

+ f0 E, f8 {3 K8 N+ n2 m) [set trade-record-current
* {& X1 x3 a& O, L: }(replace-item 3 trade-record-current note)- q% B' \0 G4 N1 ]) h

2 S4 H" x% o) B+ n& w8 h* a+ \

& }- p- O8 W3 y+ X; l8 fask customer [
; f& Y; W0 |: L1 o8 iupdate-local-reputation
% ]( }' Z" W. l' l0 S3 |7 h- x! xset trade-record-current: ~3 i  ~, ]8 q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% Z# R2 n( G6 ?4 I5 _+ ?]7 X4 ~' m  i1 M, X4 S, o5 ~0 ~

/ k: ~9 F6 a& M# k

) @! o! V8 P( Oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 M4 s1 |5 e/ _3 o9 [
+ D0 n, k% G) A
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 B7 n) o1 u2 ?$ H, G
;;
将此次交易的记录加入到customertrade-record-all/ _' Q; g  S0 l0 V
end
$ |4 d2 H" q' R' g$ w0 ?
: F. I. L$ S/ m1 Wto update-local-reputation# g  L* P( u7 b0 R6 I: d% h
set [trade-record-one-len] of myself length [trade-record-one] of myself/ c* W8 N$ \2 N" a3 U1 h# k- ^; ]
( m) c: i: V+ ?* f% e7 J

0 i8 z) K# B; p;;if [trade-record-one-len] of myself > 3

3 ?, c* m7 W9 i( hupdate-neighbor-total. D# S) R# a) R6 Y) h2 W$ D5 b$ S
;;
更新邻居节点的数目,在此进行5 V* i7 @0 r8 |. R# w
let i 36 K! [) B4 R6 ~
let sum-time 0& E8 U+ ?/ B) o8 [/ k% R
while[i < [trade-record-one-len] of myself]
. O, r! E1 X, H1 J8 d6 P[
% B! U, v, x, r$ D/ A1 o5 Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), B0 `4 c% y: Q3 R
set i
9 O' e  E5 Y8 m! J. k" I( i + 1)
- U# w& Z3 `/ s2 Z) U( l3 u
]$ ^* ]' F" @" {/ S! l
let j 39 U  O- N$ O8 {4 y
let sum-money 0* m% |% |" D1 |
while[j < [trade-record-one-len] of myself]4 K  h/ P; i3 H& k- R# B* U
[
0 x+ [- R7 [' D! x" gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
) e7 @% P! G3 }- w$ _6 uset j
6 }' n$ I0 V: g5 p( w) [$ o- r' p( j + 1)
  i' r9 @- ~3 I& f: Q3 m
]$ ?0 X) i- |; v, B) X/ J) v
let k 3$ J" @- ?% u0 Z3 k4 }5 Y
let power 0* o6 }  E; J' `( _$ [
let local 09 \, x* T% K$ u$ j9 u% L2 b
while [k <[trade-record-one-len] of myself]
4 @" n( @! K! I) p8 O0 D2 m3 p+ q# g: Y[
7 ^# M( H# V  O6 p" r8 cset 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/ i, F' W! Aset k (k + 1)* n  v& j: m: E+ f. p
]: A# ^# O, w& _( a3 `, A
set [local-reputation] of myself (local)' {. i1 ]1 I( v+ j" R2 }
end0 B9 N; |) U  j9 Z0 M4 \
! f9 {$ K4 ~' [8 `# z  U
to update-neighbor-total
8 L0 m5 B$ _$ M2 x8 c' ]; f
5 }& R6 F( W( Lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 Q  L0 G7 s, M3 k& H+ z5 n

+ m7 ~3 _$ t# q# U) u
1 p6 a* U3 X1 T" M
end
6 x  k! V0 S/ {% A7 t0 C0 ~
6 R8 @! ^& I" T0 M: y; \+ \" {0 kto update-credibility-ijl 0 ?- ]. r" E2 H' s7 k
1 T+ w  h- y( Z2 @& y" e  y+ L2 r
;;
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。
. e) {) z% ]' ^* Z& U/ _# @let l 0
9 o: s3 y$ U9 G3 `  K' k1 T# @/ pwhile[ l < people ]8 X# A% Y9 Z3 {
;;
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7 Y" N+ Z  d7 c# w! q: ~: y0 f
[
0 v6 C7 w) P# e( Ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; K  @5 ~) }! S4 x- s! p( _if (trade-record-one-j-l-len > 3)4 E7 F( S7 l8 `5 O- X& Y6 r* o9 d. }
[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! V* Q/ z; X5 \7 [" s3 Y! b1 Z1 J
let i 38 ^( p, W& i# t6 a! x6 H6 m# X
let sum-time 0% X# J' V7 Q- A2 L, m7 t
while[i < trade-record-one-len]& Z3 B+ s6 P4 N! {
[$ a7 i7 J* X* T/ V" o0 J
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ U+ n( f, k; R$ i- B* [5 @' g9 Nset i/ B6 E+ Z; j8 j# x
( i + 1)

9 u" ]3 ]: a( |8 @2 |6 n]: p" v$ F* f1 t& q: Z3 j! M/ b$ u
let credibility-i-j-l 00 B4 Y7 [* Y) N( V
;;i
评价(jjl的评价)6 q8 Y7 C/ u# D1 [/ K
let j 30 v/ E6 K6 `8 v; N" f
let k 4/ w" f& v$ T4 a0 o  s1 I# {
while[j < trade-record-one-len]
3 |. l: p' S$ V" @+ h: g[
+ n( {- z/ n9 p1 [" fwhile [((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
# m" N5 E, D% U" d! [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% t+ b& Z% o4 h* }! U# M5 _
set j
8 V6 K0 Z  j9 `- g) E1 j8 t3 m( j + 1)
+ z5 g: ~  m3 S2 U' Z& [/ p  @
]
( ~; F% m% T* K4 j1 n6 ?5 g# aset [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 ))$ M, W4 V& M8 ?1 f

/ p8 b5 ^' @* p
  {" L4 w0 W+ U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. E0 u5 l$ W# W1 C7 D. ^. D3 o;;
及时更新il的评价质量的评价5 i( B( d/ w! R9 K* O$ m
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 b& ^# x! B  R1 ^. F; P
set l (l + 1)/ O4 _( z8 `" i& s$ h% D: U
]
1 ~3 e7 f  g' _: N9 |, dend; H7 n$ \  N9 M
0 K$ @3 w/ S8 o# M7 J3 }
to update-credibility-list0 O* s( T/ q/ m2 t
let i 0: }7 F0 I. f0 H+ Q, V2 s
while[i < people]" k0 r9 \+ h; Y& ^. G7 v
[
% E6 t- k8 h# P. s/ Jlet j 0
+ X1 a( v7 f. s) blet note 01 b( i  Y. p8 l$ H( \+ ?, m" o! e
let k 0+ f3 h' \( q: q3 t, u; A7 `
;;
计作出过评价的邻居节点的数目: W0 f( I, O0 N9 A) _, K# K$ V
while[j < people]- i* i" F; {8 ?% a2 Q
[$ d, x! `. K2 N' l8 X! r, x) |# ^6 i
if (item j( [credibility] of turtle (i + 1)) != -1)4 @/ C# J; k+ Y/ ^  f
;;
判断是否给本turtle的评价质量做出过评价的节点9 ~7 W& G) `/ [0 t+ e
[set note (note + item j ([credibility]of turtle (i + 1)))1 L1 h& E. M  h) x7 T! Y
;;*(exp (-(people - 2)))/(people - 2))]
1 V' H# l' m9 U
set k (k + 1)
, s* q' O- H3 N6 g- E]5 i, P* ^. \" ?" H2 _# Q
set j (j + 1)
; {) @. b4 f, E! \3 |- V]
0 U* q, P1 P9 {) zset note (note *(exp (- (1 / k)))/ k)
# ^: O8 o; L( }. Y" Uset credibility-list (replace-item i credibility-list note)
7 Z7 G1 N# x  Z' Jset i (i + 1)
: G3 m3 f9 ]8 L- q]
; f6 Q7 V, C' Q- y4 Q: |$ \end
9 X9 H5 Z* j0 s' `4 G' d! c: E9 M$ @2 l
9 I( N' s& t' b$ z+ _+ ^. Uto update-global-reputation-list: p* G. _8 @/ N) G8 E
let j 0
' Q7 q  ^$ U# @, fwhile[j < people]$ ?1 ]" q) L7 U5 Z. u! l) d! T
[
* C5 A4 c% f* L1 y1 U6 ^let new 01 K: r- Y% Y% T. |) Z
;;
暂存新的一个全局声誉
* p* ~3 I8 v5 |5 l% klet i 0
1 {& r5 O" m- Q( w$ N3 ]let sum-money 0
( {9 o9 C* _" R% ~let credibility-money 02 {; [1 O' U: k6 A. t9 L1 m$ ~
while [i < people]' ?1 ]. L" V5 S1 ^% N
[
+ M; l$ q5 F* k- xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 M! F4 [& V( n  [
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 q- u2 J- }/ g( `set i (i + 1)
) l& B8 e; C7 k( {- O]7 A& u& z$ P8 |- P' L7 o# M# |
let k 06 m8 Z  W. R, l- r1 c
let new1 0. o6 E. {, C8 }9 N2 @7 M  U
while [k < people]
, m: ]5 _3 k& R[/ _8 y3 {; C2 c* e
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)
% F9 L1 q+ s) ]1 i/ E$ n3 [8 {0 qset k (k + 1)
* b/ z% N2 {+ m7 M' F# f]0 v; t* m6 p) @; E9 F& x/ C2 X
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 y+ L" t- r5 O. G% H8 X3 w8 D- bset global-reputation-list (replace-item j global-reputation-list new)% m0 v7 ^$ }4 U  h/ D2 z. b/ B$ P
set j (j + 1)) J% O8 V2 C' e
]3 c: b" |- [4 f7 y  Z
end' x: l# U% i$ E4 P$ H% B2 X

' h7 U9 c! U; ]( j7 S& W( \% S. ~5 [$ Z7 `3 L

4 b- c: [9 u/ Q+ E( A+ @% Vto get-color
/ t" b1 o- s: N1 b6 i! _
$ W) [, j& A- gset color blue
* [5 G' J; F" k' C8 x# ]
end# o, e8 g3 u$ z" H1 N
5 ~9 D& U5 @) i2 n9 _9 B
to poll-class
! Z3 s/ F0 g) j+ k& |end8 F" F8 E" ^/ S% u. |
/ z# i  Z5 S6 W( p+ A4 w- }5 q9 d3 o
to setup-plot1& q' i$ K# p0 @/ E
/ n/ w% Y; m5 U3 y# h# O; t
set-current-plot "Trends-of-Local-reputation"
7 Z5 H: T2 A3 k- r/ J( s/ m
) @2 \9 g- A0 h
set-plot-x-range 0 xmax

+ W. N( Z* q+ E& D7 s8 |5 @, y
: Q& {! L2 w: D+ J" r7 u) \set-plot-y-range 0.0 ymax
% [/ I  G5 n7 v
end! s# f% J! d  T9 o8 T

% e" `! O3 o# p# [to setup-plot2
4 n! Y4 }% q8 Q( W) S" x
* d/ ^4 c8 K! f% n+ Aset-current-plot "Trends-of-global-reputation"

- D3 j4 `0 }  z& v8 K
: |/ E2 C5 P1 |* j' s. r3 |8 d  ]/ P7 Hset-plot-x-range 0 xmax
$ Q) C6 ^/ r: s! ^; L- x8 [

% B0 O/ G8 D# D( Lset-plot-y-range 0.0 ymax
% E8 y) A% z, {! Y$ k
end$ E" ~1 \/ L1 i; |/ K. b
9 D* R$ W: p( m' r
to setup-plot3' G* s9 U% h6 D! E

: V% g; m8 \7 B* E: }& ~set-current-plot "Trends-of-credibility"

& p& c' O1 g: X8 B* y# ~; i% H
8 F' p* V: S2 d, |set-plot-x-range 0 xmax
  J: J8 l+ n% M! T4 B) ]1 k3 Q

% ], l* i# z( b8 B- @4 P5 Nset-plot-y-range 0.0 ymax
" H- F2 Q! H) |0 k  E5 d
end
6 K4 E- N% P3 ?# P7 T6 v+ ^5 c5 N# P
to do-plots
4 Y- s/ y; k( H; J' R' rset-current-plot "Trends-of-Local-reputation"
( O& e# Z8 ]0 D% U8 L( U& A6 Nset-current-plot-pen "Honest service"% z8 b1 _- c( H1 Y  ~* B
end7 i; K" v; y9 W+ x4 V
1 \2 T" }. \: r' O
[ 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.
. p" ^4 ~& h/ P( M; D1 [# n" q, q( q. O/ [( C0 F* |4 o- S" 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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