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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:$ ?: ?5 ]" o0 L  W; D: n' F1 h
to do-business
# v, w# \; ^& o2 ^( m rt random 360
; C, y* S+ N0 \6 x fd 1, l( r' `9 r7 G4 Y( d$ h
ifelse(other turtles-here != nobody)[
- S3 i: M: G6 k- ^   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.
4 S; D) }6 b4 i+ v) X/ t   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! ^" j) u6 t4 ?! _! p
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 ]" z: |. ]2 n# M' K8 |
   set [trade-record-one-len] of self length [trade-record-one] of self
; g7 J# `: X  H1 c   set trade-record-current( list (timer) (random money-upper-limit)): \7 O/ x: K  v+ \
, J- @7 }0 [* |' b2 }
问题的提示如下:2 g( e* D; v, J$ w9 H5 {' y
: o5 T1 t5 a% a0 O& H
error while turtle 50 running OF in procedure DO-BUSINESS
! o8 ^6 z5 ^/ \4 |; T  called by procedure GO
- y& R! G- J1 S1 s( HOF expected input to be a turtle agentset or turtle but got NOBODY instead.$ l8 V* n: w* n7 Q9 [3 W6 \
(halted running of go); s5 ~5 J/ K! j* e3 J. B

3 r: T3 f' B4 K/ o3 a  o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~~
* E2 R/ K9 v# s( x7 q* m% K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
' V* ]6 ?  V( [4 ?2 F$ Oglobals[
- j9 D- d* l# e* C6 V" e% ^1 Axmax+ [5 o8 _7 T1 B+ ^' p" ]
ymax2 [2 i8 k7 v* u
global-reputation-list
! W( q; k& g& I. P& G  O5 T" i% x' s( V. F
;;
每一个turtle的全局声誉都存在此LIST
8 O: R7 W4 n9 c/ x3 W8 _credibility-list
: z8 w  |8 o- v- _& M' b/ [. X' u2 E;;
每一个turtle的评价可信度" H7 J' `7 [% z2 i" I) W8 s6 v
honest-service
* v) Z3 ~: ~$ d$ U$ ~; P* Lunhonest-service
" Q9 D3 v" ]% Y5 J3 ?, Poscillation9 h1 P! ~- g" P4 g) ^/ S# N1 |
rand-dynamic
. O( X$ y. m% R! E# K5 j% L* I]  U" K9 X) k* h
% S1 o' ]+ Z1 N, P& @+ e
turtles-own[; M( V- \! f/ ~; C) `" R, c( Y
trade-record-all
8 k3 r8 P- n2 |* Y- h6 x7 U;;a list of lists,
trade-record-one组成0 O5 A6 }; D, L
trade-record-one
4 ?- U, ?' N* J! n" E" X6 J;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 X9 Z0 x" A) |) y0 B

2 G& Q6 I! _+ e;;[
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]]
  g, ?/ H. C* F+ k) _trade-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]
( ~; `! X, M& \' P, V5 D  s2 Dcredibility-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list9 E9 D% Q$ h  U9 ^9 u/ t
neighbor-total& m0 Z; y7 {# z) p# g  Z
;;
记录该turtle的邻居节点的数目9 g* z* j  u# r+ I! O4 z# H
trade-time7 Z  l- M1 T  D) E+ c
;;
当前发生交易的turtle的交易时间9 t9 e/ x/ h5 v6 t
appraise-give0 ]$ A  c4 z2 u4 ?$ ]0 h# j
;;
当前发生交易时给出的评价
. a: `) w9 g3 c$ n1 j% lappraise-receive  |9 |: p- s4 Y) g
;;
当前发生交易时收到的评价
* |( k1 X9 n6 `- o- xappraise-time" ^5 {8 g; T" ]- |9 s9 c
;;
当前发生交易时的评价时间
( G1 k% M3 K! Y8 k+ J2 R7 I: Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉3 w; `/ p$ O- x8 [
trade-times-total' ]: Q$ h( ^% p/ h
;;
与当前turtle的交易总次数* f* l- R% @9 S9 n& \7 N# y1 E: P. Z
trade-money-total+ x' \" ~8 N7 q( O1 n9 j- ^
;;
与当前turtle的交易总金额
1 j7 Q- B- K; k1 q/ Z/ [# slocal-reputation
6 P5 s* ]# s* O7 z; b2 oglobal-reputation
* Q2 k0 T# L/ B- V2 qcredibility* O4 i5 N& a0 v- _1 @
;;
评价可信度,每次交易后都需要更新3 u7 \* b  {4 y, }" n. Y+ v
credibility-all
- t/ y1 h$ e5 h' C: s;;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 F+ b8 {; U3 f+ l: ]: E
0 T) \' n- z/ S: D1 ^;;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( U8 p( @+ K9 s. P
credibility-one' j! N: K8 x- c8 c% V0 [
;;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
- x: B2 Z1 i* p8 K1 v0 hglobal-proportion
8 q# w$ B& T  F+ h! Ccustomer
6 H: W  H' V; J  M. S6 i, tcustomer-no# W' F6 K: S( \) B/ L
trust-ok
. c- S, a9 L- @! D* ytrade-record-one-len;;trade-record-one的长度8 `$ u: j$ q  f4 j& F+ M
]" ^$ q! d! w" o% H. }
" D9 N/ v0 g; X
;;setup procedure# W' R3 w1 i- _& \* @
8 ]# j0 [( D- ^8 m8 e: E6 X$ d
to setup
8 Y+ K+ S. B7 E7 J. \6 C6 w
2 }& N! F/ V, x% i4 \ca
$ {/ N! l/ B- j2 y& k
3 Q, N; A' y+ p0 a
initialize-settings
' Q0 K& q- q" N, N

% V: A: e% l7 e& d  i: c: F- zcrt people [setup-turtles]

. E: `3 a: s" w3 w- D# A) t
1 z0 e2 ]" T% u5 i  yreset-timer

9 S& {- z9 U" ]6 `, f: L6 h2 y
3 {6 v$ G6 s" t: `! x9 w) Upoll-class
1 h( J" I" l, W5 B) m6 w
% m2 ]' T- {$ [- ^
setup-plots
: x$ R# g7 K; ]: C/ S2 F/ t
1 l" |2 q3 w5 P) _) U
do-plots
0 I+ A6 x. Z6 T$ Z- i5 k2 e3 ~
end- d) T! D6 }) D  r& R, M
+ ~" S' A2 o( R) Y3 `5 M: y) c
to initialize-settings
5 s  q3 l, U: \: I  A7 p: g' ^% J6 f" \2 R: ~7 n  A
set global-reputation-list []

: S9 }) ?# D* R9 v3 ?8 y
7 Z$ v1 x4 g# N4 n: X( o& G4 ]" D, f1 Z# ^set credibility-list n-values people [0.5]
1 b; d" i5 n: k

  ^8 B* R( }: c, h# jset honest-service 0
" k' _9 Y- s' H7 w* S

1 u8 Y* K# q+ [  hset unhonest-service 0

, i# {- J! r7 Z- d+ i2 [6 K8 v+ B' l- j# x( W  L# c
set oscillation 0

6 n8 Y9 @! o! o5 x8 T& O- I- c+ O" h0 V% ~4 u' j) ~5 D
set rand-dynamic 0
* L" g( ~0 ^* z0 i
end
$ U+ Z# M: J- }* P1 r- \: {6 d4 C3 z7 N! A' a
to setup-turtles
9 y7 o. z* y# C6 I0 eset shape "person"
( p# K9 d; _& D! g/ t5 Qsetxy random-xcor random-ycor
3 x( D% k+ O" j( Lset trade-record-one []
3 S& O4 u; f/ R/ o# I

0 R$ B  @5 x1 Y' ?set trade-record-all n-values people [(list (? + 1) 0 0)] $ Q7 V" q3 K6 B( B( v. s

; x3 Y5 k$ C* `1 ~- ?/ Fset trade-record-current []
* _/ {. x/ o- {2 d! Zset credibility-receive []
0 |" T* w6 R' a/ ~8 hset local-reputation 0.5
# z% H8 M$ m, [, E- M9 V7 r! Y+ Eset neighbor-total 0
, }3 Y6 V* j0 q' s1 zset trade-times-total 0
' W; j* e2 l4 e: m" bset trade-money-total 0
- D& x6 @  L  o; f8 cset customer nobody7 T: P2 B# x: B
set credibility-all n-values people [creat-credibility]! {! t' U, m7 z- I; e
set credibility n-values people [-1]7 M( q0 \7 O/ c# {( ~
get-color: r$ e4 y2 q- S! L8 D! u
2 {1 t2 k( q; s' Z
end
$ Z7 J/ l4 ^  _  t% D
2 H% z$ Z3 m3 Mto-report creat-credibility$ ?  E5 U7 y+ p, M( l& J4 \5 ?" H
report n-values people [0.5]4 ^5 \/ o( E2 D, f2 ~
end
/ j; g- `% _8 ?5 S# s# x% G
2 p4 K' I4 o# Y: Eto setup-plots* `- a, _1 j- E0 O% |9 E  x( n

& j. |; n5 L4 c/ @+ oset xmax 30

+ e7 i; o  q4 \1 L; k& k5 i
4 |; E8 W% [' G% n- R( `* J4 Fset ymax 1.0

  t8 \) d) w5 O8 r: O
" L) C0 @4 j* k# E/ Fclear-all-plots

; q6 U$ m4 u* g1 C! c  F/ B2 {/ `' C- ~5 L& a3 N
setup-plot1
  T( @( @3 I  }7 [+ e8 u$ E
  W& g9 K. h% b
setup-plot2

' c4 w0 i* {7 r( {" X( V
- ]* t1 V! T6 \7 B# r& isetup-plot3
7 i3 c7 G( J( g5 k4 l- u
end3 z; |7 w( H9 N
. v  B, D8 y9 \! t  p
;;run time procedures3 W/ j% f9 l, p4 u) y) M- {6 d/ Z
& j- S7 |' v, d8 u
to go
, q- p7 ?/ [: |0 s" n: [9 n# [3 h( E$ H
ask turtles [do-business]

( G( j. d; L; R5 m5 n3 @4 m: aend0 r1 ?0 X& S1 a7 W$ M! {! \' m

, J0 r/ }9 G+ s: ato do-business
9 t8 Y9 ^) F* b% u, B; o" O

9 D3 j) J2 `5 R$ o8 w9 N% D( }/ j. V6 S' j9 k0 I1 g
rt random 360

* _2 t" r5 `% a% r7 I+ N0 S2 h, y; e7 E8 _8 ?
fd 1
; v& L$ R& T1 z" ~( P

* w  o  _' ^. H4 l$ x5 p- o6 Cifelse(other turtles-here != nobody)[

+ d* a' n% N  \
3 f- e. \& ^3 d0 M2 v" zset customer one-of other turtles-here
1 C8 \- d/ B8 ^! L' ]- U

3 T- i+ b6 {. l$ }5 m;; set [customer] of customer myself
6 h* @& `  L! P2 f3 s: ^  O
6 J. H  E' @+ A, v
set [trade-record-one] of self item (([who] of customer) - 1)
9 h9 u" b0 m* J( |4 g[trade-record-all]of self
/ D5 R1 n. D, N/ u;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: `! ]: t9 S* p: k% }

* A+ b( t3 S- ?set [trade-record-one] of customer item (([who] of self) - 1)" o, x- Z* f1 w& t  F& k: @3 ^& H
[trade-record-all]of customer
9 _" U+ \. i! g  }3 |
8 o, }! X3 ~8 f- u8 Z2 ]! U
set [trade-record-one-len] of self length [trade-record-one] of self

( Y: z/ p- [; \+ b2 h* U' F& ?( g( |
set trade-record-current( list (timer) (random money-upper-limit))

* V9 b7 Y- ?3 C
$ V# B& @  @. O( |5 |ask self [do-trust]8 \1 v: z1 X8 V; R
;;
先求ij的信任度
0 x5 n4 V, ]. x0 `( z7 E9 j( h% _
' t) y& M. m% Jif ([trust-ok] of self)$ v+ ]1 E4 f% A6 F
;;
根据ij的信任度来决定是否与j进行交易[: e: y6 r: @; G2 M; o9 K
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 ]! F0 H/ X( ]& {

/ G% ^/ ]- p- j  K: y. V7 ?/ \[

9 C; `- `- g4 S3 ]  g0 p, ^/ F8 h! \1 L
do-trade
7 B8 }, r$ Y0 H! |, V

6 Y. X6 [5 a, u: k' s! fupdate-credibility-ijl

% U3 c: r( x; d/ g. e6 C  T. R
: I7 [: E0 ^7 _$ G5 c9 `$ hupdate-credibility-list3 N+ G, S. h% M( ?- Z
; w) D5 z' i% g/ J5 X6 h, ]4 O
$ a; V: h7 R8 r3 x2 y1 B
update-global-reputation-list

) u  z  e) ?* u! N; ]1 ^5 T0 W2 s5 r7 ^5 R" R+ n
poll-class
* `  ]% k8 [2 X$ V) o6 o: \' x: s  V

- z4 ?; V7 b9 M6 v3 n: ^get-color
! O# B0 }9 |! c% E1 S" G9 b" V% V
, L3 C. I! G2 Y
]]
# ^+ t* L0 J$ Z6 X. P0 Z( M4 f* s: f0 d5 N: h6 Q
;;
如果所得的信任度满足条件,则进行交易# z5 D6 o1 j/ o" Z+ y* |1 n8 `

! x& w  ?% B! A3 i[
0 }* k$ Y& I( a$ u# J! H. V

% W) ^+ f0 j$ {6 _; n% |8 Y) V" E6 L/ @rt random 360

$ d$ L- b3 s! J" i$ u1 w; N2 ~, o0 i: R1 I4 d
fd 1

. t2 W( Z8 u# V( k) l$ ^" a6 d1 |& q  f+ T3 T, y& _6 c0 |
]
# k% ?  z( {( O0 \

# V# J" O7 Y  l' u0 [* D* Q$ Q, rend

# _' O4 j) o0 y! l0 ]" C" \/ P8 g' h
to do-trust
+ \7 Z" Z! G7 T+ N' F1 ?set trust-ok False: f8 i+ _$ V  D" ^: C7 P. Q
% s' S+ N% E& \+ U1 y
, U: d5 Y# X+ |1 Q- ^4 \/ l
let max-trade-times 0
+ m0 ~' @9 L! u& r7 t# L/ Sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 F' W- |' `, W$ C) m: v$ p% ?
let max-trade-money 00 j1 t0 q8 @, V% O3 `* E( h' ]' J; k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 ?( ^$ n: b% r+ llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' Q4 a$ Y: \" f

* q3 _7 x* v% `" G

1 j  s6 y# I/ kget-global-proportion* H3 F' q) k, w% F
let trust-value8 b4 R' O0 K" V! U5 u
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: W. A# \( T! nif(trust-value > trade-trust-value)& K7 i3 v, K3 N# x& O5 u
[set trust-ok true]
& z- D: Z. @* s) z/ ]end
1 f3 X4 N5 z" e8 T3 B
3 w  S9 P. n! ?to get-global-proportion( l3 y* [, ]3 S% I3 O/ Z. I
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ u8 R, O$ u2 n[set global-proportion 0]! n3 S/ b2 Y& H  A2 ]
[let i 0" ?4 q& c& g" R' J+ Z
let sum-money 03 c6 ~7 F/ l, u9 O
while[ i < people]$ a) B) K" {! i9 Y0 ^
[
5 w8 i/ G) }: H+ `  F1 K! x& K$ jif( length (item i' j. A- R% r7 C" z  B: `  r" d6 N0 L8 J
[trade-record-all] of customer) > 3 )
  G; Z% E* L. C: F' ?# i
[
% }! @( G$ m/ e/ G( p# ^  ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 }) P$ g* B; j5 x: o$ |7 s]
5 }6 R) ?! o8 M. ^]# r1 q# ^9 o1 o7 M7 }9 P
let j 0* L1 X$ f3 E3 O
let note 0
! s3 A! f* p! l! j5 Pwhile[ j < people]1 `; b; q4 t- m
[
( g! |3 j4 p) }: r2 X5 Vif( length (item i, F# a& s  `5 W) r: ^0 n. _6 Y- x8 I
[trade-record-all] of customer) > 3 )
  X/ }  F5 r4 ]
[
" j" F! L/ G1 P0 }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 r: w$ c0 m2 U4 z  g" i0 W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 i) Z* i5 L$ ^, G4 U5 \1 c
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ J0 B6 y1 Y8 S+ @% G' o5 I" t
]6 p( A- p) P0 P) M
]0 r, Q! H) R7 P/ G  P; n+ s
set global-proportion note2 d+ G( J4 }) y
]" b+ o& u" V) L; D% S
end$ U" m% g; v) g% I$ e& P" l
! g% Q& _# J( T0 c
to do-trade
  K! B: l2 M) l8 L% e;;
这个过程实际上是给双方作出评价的过程
3 f. l# u2 f! aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 x' s0 e* p/ H. [/ g8 e4 U% m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. f  D8 L4 j6 [2 S2 Z4 E8 _  C- zset trade-record-current lput(timer) trade-record-current
& y1 ^2 R$ {! ^% @;;
评价时间, J3 E! F' }+ H8 R5 ]4 [
ask myself [/ F' n4 `# ]; K/ T) `2 q
update-local-reputation5 `) w4 m' j' V
set trade-record-current lput([local-reputation] of myself) trade-record-current
) ]! `) K% R$ ~- S* o6 u! |]
4 ?* a) W. j# K3 u8 m* Eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 V! C2 i2 v7 a0 ]* M# r0 W4 a
;;
将此次交易的记录加入到trade-record-one
. {! @3 p/ W7 t$ Nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 `8 x& T5 S( P( _1 T' H7 M- a- R" j
let note (item 2 trade-record-current )3 D- l! F3 D) L" i% g6 Q) K
set trade-record-current. `1 Z$ Y& T2 t, y3 ?3 c  }. @0 s
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 F9 ~% l* H9 `1 V% R. L
set trade-record-current4 Q) j! h: J1 p
(replace-item 3 trade-record-current note)
* j- Y/ e  q$ e7 y5 Q7 Y% ]% r5 }" D, n" T3 P
. l4 c3 @- D" U3 e0 n
ask customer [% a, d: q6 \- l9 V# u# t
update-local-reputation
  B2 `9 }6 U; C9 i; S7 tset trade-record-current
4 f8 N% E7 ^: W0 _8 _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 U2 h1 i% O  F- G& f, C) p]
. K$ B, R3 W0 S, A
4 v  I' u" G! v

9 A( O# ^  n1 `$ _' l; qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. D0 v& H' R+ o8 t
$ M% W  X6 R. D4 w: h
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 ^: I( G* u  O;;
将此次交易的记录加入到customertrade-record-all  h2 M9 e1 t+ W! B) ]0 y
end
. A' j( s# l$ s: b( i& o% U
3 N# |% Y& Q3 D% n% zto update-local-reputation- Y7 n' x- E0 ?$ Q4 G9 {3 M
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 R" w( J1 Q6 K) Y9 n/ ^! ~+ B% Z9 A

0 n* j2 J! P$ J  a$ x;;if [trade-record-one-len] of myself > 3

, s! S# E. {8 e; f6 k: M+ jupdate-neighbor-total& M2 z5 j6 {; I# k
;;
更新邻居节点的数目,在此进行; W% H& [2 k7 |9 e, @
let i 3; g" n: X  O1 I
let sum-time 0
: @! _- l1 m& M  C6 `while[i < [trade-record-one-len] of myself]( o1 X6 T% p, \+ x/ Y3 J6 ~( t
[
( ^0 y# y! M) z" i( |4 H* [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 Z; ^7 \( Y3 t' Y4 {8 W5 @8 F6 bset i) ^4 I4 S5 K* Z  M
( i + 1)
8 ~4 P% m* e2 D  O8 Z- U. t, e% q
]
( C6 {/ s- J( \4 h5 S- Rlet j 35 S# r9 J1 Y) Q8 c6 k! |" o+ a0 e
let sum-money 0" \: z  t, t/ J
while[j < [trade-record-one-len] of myself]
  M  F2 d* d4 e1 Y+ x2 q[
2 _" i( y8 `) @/ U% X5 @6 {' Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! Z. ~- F$ z6 z/ I* }/ Yset j
3 Z: ?/ c5 n; m- N( j + 1)
# S7 k' q( Q6 ?# b. v
]
; B/ |0 A# L/ g3 jlet k 3
1 x* O5 _+ J2 K: Q* clet power 0
) s7 n& ]# Q3 r; M( R! Jlet local 09 G2 v8 W7 G) Z" b- _* H! w/ l  L
while [k <[trade-record-one-len] of myself]
/ O# ?0 O& g. S4 C) _5 B[: W5 c6 a! ^2 O, ^
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
( X* I. R9 p# P# Y( [& nset k (k + 1)
7 A7 z. I3 z: q+ d' x1 H5 d]
+ @) q' M" R$ \6 C' Gset [local-reputation] of myself (local)9 ^8 u2 ]" r+ q$ ]5 a3 f+ n; ~! g
end6 T, j# X, R7 w4 X
1 N! @  |4 Y9 C* K7 a% G' ?! e
to update-neighbor-total
* G& J5 ~0 V3 u" J9 X* w
4 y' N$ ?, G: iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; I9 s' C/ D8 d/ \
' ^& N( p7 r/ a- t
$ b2 {0 v. V4 ~& ]
end' |8 z! d1 a0 M) D/ Q& f& ]- a

% F$ d; Q; e3 R4 Kto update-credibility-ijl , C  P' ]' A+ c) U& c' w) D* N
/ h0 @. T3 K# L1 |3 @6 f
;;
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。% y7 ~- G+ z# W; h8 J' K
let l 0
  A' L3 B2 |8 Lwhile[ l < people ]& R( [9 j- t% i8 r& y
;;
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
8 ~9 h6 C% o# W/ l) s8 R, e[0 H+ x9 s  t; n, h, Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 H" P: y. ^1 D$ I# P3 l
if (trade-record-one-j-l-len > 3), D; q9 _' i1 Q: D- [+ b
[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
  I6 m$ \1 i  F  ^* B, R7 Wlet i 3* T5 y1 t4 I$ ^8 x$ R3 j4 U8 l$ e# g
let sum-time 0. t7 s. F; j+ {) V5 u- }
while[i < trade-record-one-len]4 W. C8 P0 i5 q2 ]; q5 z& L5 ?% M
[
2 X8 f! x6 K) e2 L, Uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  s) n1 P" K4 d" a3 F1 v4 uset i* f/ I0 @' v3 ?1 a; [
( i + 1)
; G% V$ I6 C8 q
]
$ A! T' c* p; Y4 Plet credibility-i-j-l 0! o, M0 x& D/ P8 o2 ^
;;i
评价(jjl的评价)/ c# F+ \5 D  q) C) i+ z3 ~
let j 3
+ F3 H% O5 z4 N* Ylet k 4
; P; [" V# H  p7 l! R9 X& o4 rwhile[j < trade-record-one-len]
0 O5 M" m* t3 A- W( G& v[
( F' a" p( ~6 ?, qwhile [((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
' D4 }" D/ X; c( Z/ M5 e/ v7 S9 \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)+ Q# `2 f; D8 ~+ C& g# C
set j% J" q" @3 {* k, q4 N" E8 Y$ \6 V
( j + 1)

- F0 o$ F3 Z# T, x& [& A]1 u& ^$ q# F) N8 U
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 ))
  G: [! y8 m  i6 E; G+ I" y' K8 |! C! b. h- g0 j# l  q# I# A
/ N: K: s  n6 v+ n4 P* c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 v1 [6 H0 H# m( @4 R. H
;;
及时更新il的评价质量的评价
6 k0 b  _2 X( h# S" rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 |6 w6 |- E! n* o, Cset l (l + 1)# |) v! R6 A! D+ d5 j8 `, E
]
5 a3 h  p7 I/ A; Zend  T- }, s  m  r+ \
( u7 S. E$ o& v: T5 \) E! @' X
to update-credibility-list
- Z7 Y; Q$ J& ?let i 0% ]& L& K$ [# i0 Y  y% u
while[i < people]
9 }: l, X( [) M[
  z7 p( U: H3 Y2 J1 ~) Ilet j 0. |. @6 P5 X1 o9 t: f  }4 M- z
let note 06 a5 T& A' v' O, d( i' \
let k 0
: l) m, ]% W" O1 d: r' G% ^;;
计作出过评价的邻居节点的数目
' f- D9 d5 _" P7 ]( {) nwhile[j < people]
  T9 @6 S, w% Y! q2 Y. _7 t8 f8 N$ w[2 J0 m# @. Z& ]$ N# Q, D: m
if (item j( [credibility] of turtle (i + 1)) != -1)
7 k. ^  m# e0 F- J;;
判断是否给本turtle的评价质量做出过评价的节点
/ C  T1 j% |8 |3 b$ A[set note (note + item j ([credibility]of turtle (i + 1)))
/ @6 f" A2 `+ [/ W6 ^;;*(exp (-(people - 2)))/(people - 2))]
! a2 x  P' e# ], t* _; P0 S
set k (k + 1)' Q  Z3 j. h  E( P9 p3 C  P7 g
]
7 E9 @2 J7 A! T6 s# Z3 a6 T3 Bset j (j + 1)
. y' \- m! k$ _: U) r5 A/ ]]$ t, l  C8 p$ e8 K5 t( ~/ {* k
set note (note *(exp (- (1 / k)))/ k)
( i9 M* \) ]0 t" O* cset credibility-list (replace-item i credibility-list note): j8 g% m3 ]/ F) e
set i (i + 1)
) F. p$ b8 O; e8 g* i2 t( v]8 E/ G9 V6 b/ T9 D5 C  x2 _+ C* {% Z& T
end, {( U7 w; t( r; e! v

+ Y* b% t$ Q& T0 s7 S! I/ V  c& Uto update-global-reputation-list
& Z' O4 V) u- f$ `. t5 R2 ?let j 0" ~7 M* X3 ^! X7 q0 e7 f/ `
while[j < people]7 t7 M  L% i' g' y9 |
[7 ~! `0 ~# Q  F/ U
let new 0% H+ _* u% ^& o( l' n- @$ n! d& J+ g1 L
;;
暂存新的一个全局声誉
4 A* A- f2 z' g! g. mlet i 05 @$ ?) F( e' }) B% Z, P1 D! L1 V/ N
let sum-money 06 E/ J( f! J4 Y
let credibility-money 06 Z, B6 @) o% @; i, S- x& K5 u7 O/ f
while [i < people]
+ q# c9 D9 s8 B/ \8 u% a[
* w( C- G2 D& yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  E' a: N: v' ]8 S* B! ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 O5 E2 W4 J9 B/ B
set i (i + 1)& @& m' G* P' T% K# M
]
# t; |8 P) o7 L* R7 D( ylet k 0# z4 d, C: r, ^4 |+ l% k3 N* k3 Y
let new1 0! ]1 n. ]  I2 R
while [k < people]
7 {" G3 b! Z; T* F- x[0 y7 d: @" [, K$ p/ i
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)
7 W6 V, ?' O. t0 M! t! {# Wset k (k + 1)
2 |0 k8 ]" n6 e. }8 O# }]
1 C1 ?* u' Y, ]6 c" s1 n1 W" d) Bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. S3 A" H9 x( A( i( yset global-reputation-list (replace-item j global-reputation-list new)
) Z6 U. `' z% V! a9 ~set j (j + 1)
0 L* E! R: t& I% P. D]8 }2 v5 v9 x  U: ?
end
- U4 ]! z3 m6 t: k, H0 a
4 o! F/ u" J, s% K
' \% H5 F; g1 a
) P4 j$ o, _, W* f& Gto get-color) Y3 M+ f* M5 C0 G) p5 ]
. L0 Y  B1 I6 {) g
set color blue
8 s0 v1 |7 V. l9 `
end* C$ h. Z8 d0 u( ^
' D6 p7 R! V! a/ o; f1 [, B
to poll-class  k4 P; ]2 H; ~; G; V
end
. Q4 I! H. n) p0 Z3 O% e; }1 x( K1 U) }! @8 e: @
to setup-plot1$ u0 q1 w  o, E& b+ s
9 a, B& z# M% e* q% r# n
set-current-plot "Trends-of-Local-reputation"

0 y- g& z1 B. d) y& t
8 }$ p- o8 w" s( Kset-plot-x-range 0 xmax
( x. M$ @- l) U+ d
- y4 J$ I- n2 |  N( l
set-plot-y-range 0.0 ymax

2 q. Y3 o' r# V( Wend4 r- L' |0 e1 V+ K

! s" E2 P+ f8 nto setup-plot2
* C; f  Y" W4 N7 X- C2 P  E: i5 z1 B# ^% K
% x8 M3 Y5 g5 ~/ r' m- [set-current-plot "Trends-of-global-reputation"

4 q+ O  }2 S- @% Q: N, M
8 _' E% X# q, }; L/ L) }# Oset-plot-x-range 0 xmax
" I; h7 O% p" ^+ ?! k

" n  n' d- ~: r* j6 nset-plot-y-range 0.0 ymax

( [, t3 Y$ f/ ^0 f; x' N( O) lend, h+ x, }* s( _
+ E6 h+ l8 u8 l* z: ^5 }6 L
to setup-plot3
. t5 [, A. D* Q; e& v9 W( l/ ~; x
. J1 J( I# I: [. nset-current-plot "Trends-of-credibility"

1 j- R2 d/ x5 X5 i) ]9 X! u6 N. w* `
set-plot-x-range 0 xmax
% m' w# S$ e4 d9 L$ e: n
! n3 e( f- k, s" Y" R$ E, w8 ^
set-plot-y-range 0.0 ymax
, a2 S! X$ V  P" ]* ~
end8 d6 G! q% Y5 i9 Z( U$ O4 b

0 V' M$ C* g; @$ ?9 ]to do-plots
: |! y5 O/ E# _+ N& r$ ^8 i# c% U/ _set-current-plot "Trends-of-Local-reputation"2 x$ \8 P2 e4 D0 X9 Q$ h/ E' N
set-current-plot-pen "Honest service"
5 D1 K+ x( W+ R$ H9 r+ Uend+ A' N7 C2 F* j* L. [
/ m# r* j  r- a$ Y
[ 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.
7 T7 V8 r5 k! S5 K) H* |
$ B+ ~8 S% F" }" K. L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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