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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:( T( h% d* A# I; a) X
to do-business
6 g! z' s' u) M& p- b. G$ u rt random 360
. h& p6 c; y+ j8 f' o fd 1! n5 z2 d7 I  L2 G$ q
ifelse(other turtles-here != nobody)[
6 o% o0 W) f' F& k5 @6 ?& j   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.. `% B3 {' C! r7 T0 Y) n% G% o
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) Q5 x9 }1 |: X$ I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! a8 v7 f. y; L
   set [trade-record-one-len] of self length [trade-record-one] of self
6 ?9 }$ x' ~  d   set trade-record-current( list (timer) (random money-upper-limit))
9 G5 V! n  G2 F% E3 v
3 }8 E6 F" u6 M9 \, j$ ?0 H" l问题的提示如下:0 n" n3 \" }+ P. Q
/ i& a# O: v2 N9 R* M: Q" r
error while turtle 50 running OF in procedure DO-BUSINESS# f( N9 w1 G' l1 t0 k" N! ~" U( m
  called by procedure GO& a* ?  ~; R) x; J0 S
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 ~3 ^- {6 ]0 O4 x( o0 ]
(halted running of go)
* T- y+ z: g: F" `. e5 C/ [
2 j, R+ A2 d: K8 @9 o% B3 J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~~
/ J5 `; \4 {) R# V! H( C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% {& L- @( L: J7 w( A
globals[9 {* ]9 z2 n1 @" Y5 E8 k- }
xmax
9 P& _  \  T4 M; Y* oymax# i8 v5 e/ I8 M% i2 y6 X
global-reputation-list
8 U' R+ I! T3 e* G
/ d& c( o7 s! v- k5 W;;
每一个turtle的全局声誉都存在此LIST. t5 S  R/ m& Q" Y' Z) r- A: c; R) T
credibility-list' Q6 x! B: }2 t& i- ^( {% D: j
;;
每一个turtle的评价可信度
; L! N& k  [5 O6 t7 `  m  @honest-service' U' H1 G/ ~9 K7 y( _" {0 \
unhonest-service
" x0 H1 F0 Y$ X; doscillation+ s3 l+ B5 h& C1 [6 B
rand-dynamic
* V0 }' e7 ~* h]
: W9 i! ~; Y1 U5 b2 S4 z. R# s; V! ~9 C: K
turtles-own[. D; D' j3 `7 M$ o: w$ Z7 X
trade-record-all
, i4 C0 A( }) i# D' z7 l; {;;a list of lists,
trade-record-one组成" E: L2 ?) k  K
trade-record-one# p5 _4 T2 @) V/ ~8 t! t2 u9 t& N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# W* D  H0 \3 z6 U5 P% l; E4 c; Y

4 E! c, Y$ f( C! ^8 V5 P;;[
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]]5 b& m+ @+ X( 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]8 I& z( l! v  v3 P; `4 C
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
3 S6 w. M* v! t! E( N* Mneighbor-total
/ p* W- b; T5 c$ [6 X* z;;
记录该turtle的邻居节点的数目
$ T2 J/ j- Z. u# j: Ttrade-time
0 q, g# G4 O: ?;;
当前发生交易的turtle的交易时间
" L! N8 `3 f/ Iappraise-give/ o& j2 J" y& O
;;
当前发生交易时给出的评价% [: a1 a% J; D& W) u" T# j
appraise-receive
, S" M+ V  H7 d0 ?7 B7 m- L4 @;;
当前发生交易时收到的评价
' d7 `" c, r6 @( [; I) v/ iappraise-time
2 g1 g  m4 g# `& F& Z/ Y( A;;
当前发生交易时的评价时间6 t# A0 q3 B! i9 Y: n7 W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ K& ^9 F. S' _6 g
trade-times-total, T6 s% r+ C. P0 h1 l2 W
;;
与当前turtle的交易总次数* O4 R$ i+ R2 u" Q4 A$ F  a
trade-money-total' }5 f1 ~0 \1 x* @; C
;;
与当前turtle的交易总金额$ f4 e5 `/ G6 k# |3 ~9 _1 b. z- }2 ~
local-reputation
7 b0 G) ]" N  }global-reputation. O4 i9 @4 ^  O% ~' E
credibility+ J8 M4 o) m+ h2 a
;;
评价可信度,每次交易后都需要更新+ f1 U7 Y2 ~* t" k9 [
credibility-all
+ ~( v- Q# ?/ C2 G* Q7 o;;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
: Y. r/ b' N% ?- V% _$ R% D, n: \+ B$ P3 j% Z2 Q8 z/ L
;;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
' W# [% m' Y9 l. U6 t+ Lcredibility-one5 Y6 S# v! J7 u4 _
;;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' B6 O4 i6 R. p4 C' {) F
global-proportion8 t  j0 A& |- {7 v# D. g2 t
customer4 Q: _9 o- M( y$ p: ?) J: w. H
customer-no. y1 a5 o: ~8 x! k1 w& F4 o
trust-ok
5 c" `  D5 d6 B" z& r8 Ltrade-record-one-len;;trade-record-one的长度
2 F, `5 {) ?3 g9 I9 P]4 ]& B& A! A4 F/ v
6 ?# c7 {# D% R6 k8 A
;;setup procedure
+ m1 ]% v: P1 c" O7 p. ]) y6 a) O4 r9 r, h
to setup. H9 V5 n% d7 q2 A* E; g

% Y5 n& j) j+ c" f9 N; Qca

6 O2 e. Q4 h; C' V. S  [
* U$ _$ X' R- m1 \3 o& S5 V7 G. [initialize-settings
. {9 T8 t* k$ S( c; X  L

. H! Y* l4 g& gcrt people [setup-turtles]
% {) O, a$ z2 v0 Y6 }0 L2 h4 B& ~2 X

  b0 t3 y% d& l$ G) Y9 [: d% s( g8 Hreset-timer

' i7 Q& M% D7 L: C1 ^- m7 v
9 e. W. `9 z7 k$ ^) q+ m7 l3 M) gpoll-class
3 x- d- j& {( _  s8 ~/ k
: u# A; I5 `' r3 R
setup-plots

) t( y8 M: o" l1 U' j- t
! t4 {$ i! B& {+ f* r5 |- I/ rdo-plots

* k* L/ _- c9 E8 e- |$ Vend
9 ?. E. i+ ~$ m  C' K
6 ]5 O9 R- `5 M5 Y0 ]5 Lto initialize-settings+ S. @9 e: N" M; W; H  ~
6 }9 K9 T6 O! z; o0 l+ C, @
set global-reputation-list []

$ S$ L: p0 m! t: |
" j% C, g9 ^8 T! hset credibility-list n-values people [0.5]
" a$ B5 ?, p* J; `: p

7 g* V) V4 C& k+ _, R0 dset honest-service 0
; x/ z. ]1 A7 p- ^
3 ^  U* V1 F2 x3 b6 ~/ ?
set unhonest-service 0

1 C5 a+ l* c4 S  q) T
' Y* G1 w6 G+ ?2 Mset oscillation 0

7 ?' g+ P' A8 T8 Q7 Y$ U$ q( \7 x0 _, M$ g1 a) A; M
set rand-dynamic 0

' h4 g8 H6 a+ A* Qend
2 u4 d% q7 |8 Q2 T$ U
8 E' O' N" o0 e, |1 @9 G- O5 m; qto setup-turtles # n# I% E1 [: E) G- s
set shape "person"& d9 G6 t; @8 B) d- d4 I
setxy random-xcor random-ycor
1 j  X3 a9 V7 H! wset trade-record-one []
8 u) m' B% Z" \% Q- A8 P2 u' B

; }- ~. i: t- ~* ?& sset trade-record-all n-values people [(list (? + 1) 0 0)] $ j0 D# Y! r, F/ y

. H2 q1 i) g- T3 B. e0 kset trade-record-current []
4 I9 \% A1 d8 u) `0 {$ Tset credibility-receive []$ s4 p  S. N9 X2 ?1 e
set local-reputation 0.5- `9 w8 N! q/ h
set neighbor-total 0
6 x- l: }8 R( a9 zset trade-times-total 01 x, @% j6 z9 P" U1 G
set trade-money-total 05 P' b; D% V6 N5 i5 c
set customer nobody% n- ?" X4 i. F  p& L
set credibility-all n-values people [creat-credibility]
  a1 N( a' B# @- L) E) M; ?2 ^set credibility n-values people [-1]
, s- j* _! y+ A( z2 T7 X8 oget-color% V5 S! K& ]9 a, t0 T8 }& ?* n
1 e8 Z( ^! D) ^' G% K" d
end
/ s8 @! j4 T- R) }& t  S
# a4 \4 q) p. ?  H4 Yto-report creat-credibility
0 A+ S: Y- p( `- E- `report n-values people [0.5]
+ Y3 P4 H: ^1 F8 Cend$ P+ e: b$ H4 Q: W6 w0 _

: p* x2 J8 B" c! ~& ?8 jto setup-plots- _- S: ~" a, Q6 V6 \
1 T. Q: I' ~7 l$ O8 C
set xmax 30
& n+ @/ y7 K8 R  ?- p

; d  H" `3 X: Z: ]set ymax 1.0
7 n: _, G3 ~$ b1 a( r

6 Y# V) v9 z. E2 Dclear-all-plots

# f" ]: m8 y- A9 X7 c' c
  u! _! L; L- v) Z- f, Bsetup-plot1
. R  l; |- Q0 m

! N; @+ P2 v  k+ Q% h1 s2 u4 Vsetup-plot2

2 ?7 Y. Y$ A+ M9 E& ~
2 x" I( X& D' T  p8 bsetup-plot3

4 R- X! K+ f' o: ^7 |' Z+ wend
4 y, m" F6 F, G
! n: p$ y" Z, X, k9 V3 c0 l" J. o;;run time procedures& M" M- O6 }& u% f; b
, D7 ]7 B; @, H( m
to go
7 o) {$ P4 U" k9 q& `2 i$ P. w: @! E8 f# h
ask turtles [do-business]

( r6 H& c+ ^1 @6 U0 d. j+ Jend+ p0 V; K- n8 X# g

. D# ^4 h, J5 K3 t: Bto do-business
# Q. M4 L- r6 i1 z' D

) H. g. H0 [" _& I
2 `# b" C$ O. K7 q6 E2 O% Drt random 360

) c. q5 P6 w! C3 f5 B! [* o* T
0 a( h- E+ o9 {- g$ f' \fd 1

8 f& a4 C0 |: Q5 T! _
4 F1 G! t; U* q% K) M* m( Q& Y& B& eifelse(other turtles-here != nobody)[
. `# X$ `4 w: U- T0 _# s6 A

. w( K+ i! a0 k3 a7 m! ^set customer one-of other turtles-here
  l8 M1 H3 ]. F% [, M, {
4 v/ y' p3 ]# Q( B3 h
;; set [customer] of customer myself
* i8 Y7 ?; N: x) k+ f1 K
' W' |: s2 W7 _  ]
set [trade-record-one] of self item (([who] of customer) - 1)
9 S& M* n7 L6 p% b8 c[trade-record-all]of self
0 U0 ~' {& V; ^% {9 @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" i7 p7 T9 ^' h8 M/ I- q- c; ?0 B. @
set [trade-record-one] of customer item (([who] of self) - 1)
% s# j% g3 }7 r8 Z[trade-record-all]of customer

/ J1 M! e& k8 T* W1 R
- ]2 O, k/ d/ M$ W4 Cset [trade-record-one-len] of self length [trade-record-one] of self

1 l) V* I2 j+ {9 g% u  j- l0 u8 I4 D- S! l
set trade-record-current( list (timer) (random money-upper-limit))

7 D9 h# p3 J0 Z6 M! {: Y8 ]' h3 T! h* W. ]  p
ask self [do-trust]
8 y- M2 `+ ^4 M: ]' @;;
先求ij的信任度
* v$ Y% d/ @7 ~6 w- [
! u: n" B0 \) @1 Z. iif ([trust-ok] of self)
- t4 [* g/ X9 V;;
根据ij的信任度来决定是否与j进行交易[6 B4 E3 Q. c  S4 x" q8 ~" v
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 c+ ^+ z8 q. W2 v1 ?0 c; x9 m3 A) d. ~* j* g* H5 k
[
, X3 ]+ Q9 i) X" [( ~. P

; L8 z- d. }2 b2 ~+ B9 A- Edo-trade
' L0 C$ Q& N/ V

( H+ O5 I3 j: m1 A1 pupdate-credibility-ijl

, D$ R1 q: d4 Y  Y1 w  }5 Z! X- V. B6 T: |2 v9 ?9 [
update-credibility-list
: }/ H# p3 Y1 Q, d! E) I4 z7 \

9 P7 ]6 O" N& h6 N5 a1 S  i
2 \3 w- u4 a: E' i! Nupdate-global-reputation-list

4 W% m9 Y6 X. N$ e2 t/ M) I6 }4 }. y
poll-class

' s6 M& ~- c5 F) n& e' U( L9 U) a/ ?7 a* i7 N- I. H) Z5 Y3 x9 }
get-color
- n6 D+ P2 x) q$ j# J
6 i1 s( _2 }7 [
]]
' n  O' k( W6 u1 P/ d( L. h+ l5 `: r+ @
;;
如果所得的信任度满足条件,则进行交易0 C) E) z* J' ]" _5 d8 k& ]

- y7 M. C6 C5 h$ P2 c; q[
- T1 [) u6 |+ r5 S" T( F7 c
% T; w8 }9 c1 z
rt random 360

2 L) g8 P: @4 ]) Q% @' s/ r$ J; N$ w9 L
fd 1
/ i0 h# [# v( r+ Z  n
& e* b  [/ t, s2 e0 x/ P0 r
]

, A  j( Y: Q! Q7 w4 R) v5 _. }& N
* D7 |; e9 ^% K8 x$ Dend
6 I) Z7 }3 ]# r  }3 G7 J3 C
8 c8 m7 T! t8 c0 g6 I+ ~3 A! b
to do-trust ) k3 [" `  j0 A9 }9 }4 f
set trust-ok False
1 }( D& }7 M8 P" Q  {
8 }; m7 C  P4 Y4 G0 m9 F
. S. s7 g( `1 F; N& H. [" Y, w4 _
let max-trade-times 06 W( Z; ]3 M8 R0 x* j  Y% Q) |6 I* @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 n3 h9 @1 _; a  c
let max-trade-money 0
9 l0 p' ]  d4 h  J, mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' c- w) m  U+ c( t7 i$ l" P$ ~! f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" d! N( ?3 u5 }7 R
7 C) ^4 O: H/ e+ \' S4 A' P9 `5 [
5 w7 Y" ]: i1 f$ }0 Q( F) E5 W. O
get-global-proportion& J0 t$ B- l/ |' n' C
let trust-value' f7 |  R0 e) c3 }8 {
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)

0 C* `% A9 F0 A9 R5 l4 d* Zif(trust-value > trade-trust-value)
: g% u1 g# `) \- s9 D[set trust-ok true]0 k' L) w8 t0 H
end+ R' j% Z- ]4 S
, {& ~5 P: r' q6 X6 {4 Z
to get-global-proportion
* S2 J- u  Y3 Q# j  [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: H, s( O5 ]$ q9 S' h( K" Q[set global-proportion 0]
6 H- f$ u/ }" b3 f- g# k[let i 0
9 r9 a4 ^6 V7 S6 elet sum-money 0
  [7 B1 a! v4 H7 L$ b$ Nwhile[ i < people]  O. O6 \6 u! J( y, U5 r' E  Q
[
/ g% N5 {5 I$ Vif( length (item i
: g7 Y1 m! K5 E4 ?! A* l$ W[trade-record-all] of customer) > 3 )

7 I0 V$ J2 {# V- C, N. R[
. V. L  |. ^, z- C4 ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. k8 d7 H$ s3 x4 y9 D]
  e7 @, R" C1 Z0 [$ s- B# E/ K% z. q5 m]
! V( Z( O7 f+ M: ^; X+ G2 alet j 0  i" C# J% \0 F
let note 0; [. I; u; N) N' j5 A9 C
while[ j < people]
* i3 t% }" ~. Q[2 i! }" H8 N! \- y
if( length (item i7 j7 v! g/ N3 w, t; C
[trade-record-all] of customer) > 3 )
* R# |  u7 ^- U. N
[
( R" g8 D* n. {7 g5 e  hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); e! g% K3 g' |% e* V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: \& M. Y. S" `) l1 ?% m4 z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ i7 q2 [# X7 M, X& ^1 y% @
]' I" r8 A8 t. k* R4 M! Q
]
5 s( o% d) V: N+ Gset global-proportion note
4 T: o: P0 b/ W+ G]% p! D- {) }$ c4 m
end
- ]/ s7 c$ f' l% c4 R. a; x
1 u2 i, Y: c0 k" N; Bto do-trade
6 x6 z4 K5 M: N( y& {* {- _;;
这个过程实际上是给双方作出评价的过程
; B- R2 {9 R3 c7 c. i6 Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ H* {& Z* S' C5 `- Q5 n4 Z8 r3 x+ Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- y- P/ S6 i* _  n0 tset trade-record-current lput(timer) trade-record-current% _) j& T0 j5 N1 H  c; R3 I
;;
评价时间7 r6 F6 j# U' v
ask myself [
( W8 v7 w% H6 H% O7 x4 i- supdate-local-reputation, u: u" q3 l% x$ o& }6 o/ P
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ u5 \$ H! y- U) D& `0 ]]0 `! A' J5 p2 R, R  P0 E
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 ]3 v5 p" q  b# ^$ v' D/ h9 A6 t
;;
将此次交易的记录加入到trade-record-one
9 R+ S+ v7 R4 ?9 ~; q: Eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 _+ b( }+ n8 }& |6 Flet note (item 2 trade-record-current )  F$ _5 s, c1 ?5 @5 h. k6 l9 |1 }" N
set trade-record-current
4 Q5 o1 b% W0 g& a4 |* ^(replace-item 2 trade-record-current (item 3 trade-record-current))
$ b$ W4 w9 q: Z$ D
set trade-record-current
1 h* Q! Q' B4 E  i; |(replace-item 3 trade-record-current note)
6 x+ N5 _( Y6 R; X4 i  i7 b0 o4 R. a; P7 {$ [. E
. m! Q1 P& f2 T5 z. |# w/ b' ?/ \
ask customer [
: I# G: G- @4 q4 q4 K/ w% k* \' qupdate-local-reputation
! _1 c, U) }4 @- `: A3 kset trade-record-current
$ J7 U- g: x) U0 ^0 f4 `, q  C(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# k$ O! b: d4 H9 k$ h4 O1 H
]
8 U# Y+ h# P5 a5 ~" M) k/ F. l0 a1 D# b7 }
* U3 j  d4 L8 J$ U
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 N7 |$ _( t: h& e# s8 ~
' `6 V7 ?/ p' ^0 Y) n* ?0 ~$ _2 b
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* D5 _: @1 k8 d1 q: b
;;
将此次交易的记录加入到customertrade-record-all
/ Q7 X5 W8 @- A# n( I: @9 dend1 c. I0 V4 w' X2 ], u  ~$ d

( ^! Z8 k7 @( ?to update-local-reputation: M. q7 X5 S. J. r
set [trade-record-one-len] of myself length [trade-record-one] of myself
, ^* T- ]# ?% p- S- a! a' ?2 C0 {. Z2 h) [- q* {$ T" S3 |

4 _3 A- f9 e+ Z+ L$ v; C;;if [trade-record-one-len] of myself > 3

9 c8 i5 S, ^' J+ q4 A0 B. dupdate-neighbor-total0 i& A/ ^/ y0 |3 |) Y
;;
更新邻居节点的数目,在此进行2 o' @2 S- ?4 q- z2 b) x! T
let i 3
+ u/ q) e7 O, p5 h0 J. M; X; zlet sum-time 0
0 I9 g5 Q' v  V0 F- e0 s( T  |while[i < [trade-record-one-len] of myself]* K4 T" N; ^$ {/ _7 \6 v+ a
[( W- G/ I" |% c# l( i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 F% e; ]6 H" k% I+ g: c; o1 L
set i
# t7 b3 i. O, I% f( i + 1)

7 k' s! K* Z9 @# C: `( i]
& W0 C* a: [0 G, dlet j 3
: t! y( [  f9 v! p: [7 ?let sum-money 03 _8 G5 Y3 W$ Z; m
while[j < [trade-record-one-len] of myself]8 b1 a( \. q' D2 k. q4 [3 o! s
[
: w+ M- Z" v0 u9 J/ [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)3 R1 [4 f+ x* y. C5 _/ c* l! x. p" e
set j
4 e$ V- ?( c& `7 Q( j + 1)
/ `6 n- P% U7 L8 V+ r
]: D- v% m0 R& e. w. C
let k 3
* G% _' y3 v- E0 hlet power 0. k, G$ G. e2 t  i7 I5 Q0 Z
let local 0; Y0 ]6 ~) C) i+ a% H& r: s
while [k <[trade-record-one-len] of myself]
0 e  d- z0 \; Y$ s[
* |% g9 U( K2 C" j3 O& Vset 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)
; e5 ^2 n& K3 Hset k (k + 1)
: _6 k+ Q/ ?0 Z4 V5 J]' A8 W2 d3 ]/ T% k! h8 v
set [local-reputation] of myself (local)3 |; v9 x6 P/ T' |- P
end
# T8 t& e4 \, D
1 d7 q6 E2 o+ a$ B: b( |" Wto update-neighbor-total1 G8 e7 x* s, ~& R, \1 d
8 \- {0 B. r& ^1 {8 P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 b6 |$ [+ r4 A' z5 H1 f
1 a9 j: N$ l7 h6 w2 a- T3 t
0 T5 O0 {* R6 @. _8 ?5 k& q  T# U& |1 ?8 K
end+ F0 X, k3 f! q- s

$ _. R& \3 `6 E! ^5 o# Uto update-credibility-ijl
! w& v7 V3 z' Q
5 }8 J- s' u0 e# H; P;;
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。
0 S  s. B) L$ `" Llet l 00 O% h! T. [8 D
while[ l < people ]
0 x# m. y! H) n1 [) s. _1 d;;
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6 L! b* n7 @8 s0 a
[
; D( r1 k0 X( G" o: c4 t1 P# P2 G! Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)% V; [6 N; I2 [2 f
if (trade-record-one-j-l-len > 3)0 X0 N8 j" F# m" G* j3 H! y
[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# C' P, [1 h6 ~* [6 ?8 u! U
let i 3, R$ S  X* l1 `1 e
let sum-time 0
- ]8 g; L+ i3 c( s. R7 R0 qwhile[i < trade-record-one-len]
, p* r+ u  o* m' A[
6 L: W' `# }, l4 K7 {* A# Q5 K1 dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 `/ d  N  D9 Y& ]# h, O; g: L* Aset i
% P% Q) G! G2 u( Y' T: U  v, ]; U( |( i + 1)

1 \3 A, M. V4 w5 Q# a. S% `]4 w/ ^+ T. o" u0 q8 F/ U% d
let credibility-i-j-l 0
% D3 R/ Q2 `  ]) @9 i- _- S;;i
评价(jjl的评价)3 t. D4 {5 N# S  a7 w
let j 3
0 T& o* s! G3 Z9 t+ C5 ~! d& Llet k 4; h0 j) F' G' c1 L
while[j < trade-record-one-len]5 ]0 U4 s2 v7 I
[& ?7 `+ J( J) G# ~
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
3 K8 e3 p8 u2 q; Wset 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)
! E. {' C& [# B5 J) }: Iset j
4 F" N4 T' D1 ^( j + 1)

  {6 }! T7 C/ Z# x]
) d- U3 g) z: a0 ?2 J: c) mset [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 ))
! [1 ~* \9 M. F+ m/ ^# s" f
# @0 I0 l1 z6 [& Y$ t6 F5 I- A' |

0 `% `8 B- G) `2 E) Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 p8 Z1 x) L  J/ q8 i# V# `' R& o& t! p;;
及时更新il的评价质量的评价
9 `2 x( ^3 m+ x$ Jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 @8 G/ ~7 Y8 I1 N) f. dset l (l + 1)
* T+ Q6 A' i/ a; L: j]* f* M) O9 n- p% i
end  ~/ ], O2 P. M, g
$ ~: o* _. F$ D
to update-credibility-list
% Y1 w- b% o- x! Ilet i 0  V3 v+ ^4 q) D1 T1 W
while[i < people]7 {) a6 {2 W5 y# O, Y% W1 h
[# n. v5 o: z/ J# ~4 @7 j; {8 J1 l
let j 09 ?9 D3 i5 b9 G- L0 C# ~
let note 00 D" F4 Y8 F0 H$ t- j
let k 0, L6 |- z0 N4 E/ i9 c& M+ \8 O
;;
计作出过评价的邻居节点的数目
$ W0 ^5 ]' \  z9 G% _% h6 Kwhile[j < people]
. b8 L9 [3 s9 W4 d: l/ ?! ~1 u2 k[6 c" ~# h& T% G8 R6 N% {  q
if (item j( [credibility] of turtle (i + 1)) != -1)
! S& Z% _9 s$ l;;
判断是否给本turtle的评价质量做出过评价的节点* u& B* z$ F+ M4 ?* W! A
[set note (note + item j ([credibility]of turtle (i + 1)))) J3 D  y; H, a8 v8 j; ~3 D, f+ B
;;*(exp (-(people - 2)))/(people - 2))]
, f) D1 C5 g2 z" ^0 p
set k (k + 1)  Z1 p# D0 c1 e$ P
]9 u  U+ }( }- @% T: D+ J
set j (j + 1)" w. }4 N$ ]' v2 a9 N6 _: f: |# ~: c5 D
]2 l* U* X+ b* H, @0 s" O6 X; h
set note (note *(exp (- (1 / k)))/ k)
2 ]3 A0 N" `5 p- \set credibility-list (replace-item i credibility-list note)7 H% b! e8 U4 c/ N
set i (i + 1)- [8 V  u) f8 R
]
) w! R6 l8 Z, u2 D/ L2 gend2 X1 P1 g$ W  y

  y5 d+ c9 v( D: I4 E  Hto update-global-reputation-list
) L1 p! n# ]; u( O9 C$ }let j 0
- n1 @! W3 ?+ n, k7 j! Kwhile[j < people]
: o+ Q+ D2 O6 Q4 f[
$ @; F- d& u9 P4 @$ g& nlet new 07 Z0 }- G7 L& e
;;
暂存新的一个全局声誉3 d1 R1 A2 j3 b: S5 `2 b
let i 0
+ a; ^! a& Q( G, b7 Jlet sum-money 09 ?  N& Z5 \! A5 T& m2 i
let credibility-money 0
: _( {4 q3 Z! A& M& g0 Uwhile [i < people]
4 d1 s3 ^( z6 H$ Y4 N[. n! K/ X7 h1 g1 P7 e. M; L- w7 G  Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 y. I  |7 g0 C* M, M7 cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; @( O9 ?, w- W% f- O- A1 Qset i (i + 1)
  ?; ]+ p$ a$ T5 e]* f4 ]/ _$ h3 f0 V% Z6 w
let k 0
. V2 f, g* j8 D8 Ilet new1 0# J& ^6 w* h# I. C& s: d
while [k < people]8 j5 k- v; z, @
[
: q6 c. |4 q# A4 z: @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)
: {$ _% V! j- p0 Tset k (k + 1)
* N; Z# _0 h3 S4 d  q4 z]
% D9 y- F$ _' w; E5 W5 Fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 I4 B+ ?# L/ h1 J  o$ L4 n/ }
set global-reputation-list (replace-item j global-reputation-list new)' M( R1 E9 x- l! Y. L+ \+ `
set j (j + 1)
7 K/ \/ y! I5 Y]
! D: f; K, f+ |& i7 x- X% v, t" send
7 o% c$ w1 b/ t- G: w& F  E- f" g. j

9 S2 G5 E0 ]4 n) ~, u6 `5 N  ~/ |$ B7 J. M4 |+ u4 g  F
to get-color  z4 `4 \7 F/ B: Y8 N3 X: T  D

; c$ |, |) W; w& sset color blue
& ]! Y: c" V5 }% o) E& i, ]. R, [
end
& ~) F9 v0 R* S! z5 d
5 y, j, ~. h0 V3 D6 Oto poll-class
/ J; u1 C3 j$ I( g( Tend
. x# c, x0 U' |# H8 e5 F; k& h0 h# D% ]8 X7 C/ J
to setup-plot14 N4 N! A" A; f. e( ?5 i3 d8 x* w: W

0 T$ ?6 T3 b1 l# D) eset-current-plot "Trends-of-Local-reputation"
0 S. O/ U* G# D& m" h1 m% z2 F

" E3 k$ K, N% c0 c2 ^6 }set-plot-x-range 0 xmax
( ^0 r2 h+ g# v

1 Z, ]( f8 C# x, O7 S7 [* X; hset-plot-y-range 0.0 ymax

0 y* F8 c) U6 H6 G. Aend; ]. T8 O0 I" M# y" n. P4 [  Q

' T6 H" N0 t% t7 \0 I4 c7 A- Kto setup-plot2
9 ^5 e4 n" [5 g6 }8 ^) d9 P& W7 y. T
& a0 X; W2 Q8 f4 F7 o6 Cset-current-plot "Trends-of-global-reputation"
# c( y/ ?1 `8 D* ]4 s' e
( ?' U8 T, ^4 N& a( \7 u
set-plot-x-range 0 xmax

' ~) c! g! Q+ x4 n5 G0 V) b" [- s
set-plot-y-range 0.0 ymax
% E( m4 f. Z1 [# d0 w* k: b
end7 E5 F4 x$ n2 R' G6 r
) T& I9 J: a4 u
to setup-plot3# G( S9 D: }& S  ?
( f/ q& g1 n* W# ^+ f$ ?1 y
set-current-plot "Trends-of-credibility"

$ Y7 H" [' ?% q# q  y8 H1 p7 {
) Y0 _% A7 u: T/ j( f" ]7 ]set-plot-x-range 0 xmax

/ x4 B: t: v* ?7 d2 {- c! t5 B! O- ~& r8 p( |4 _  v
set-plot-y-range 0.0 ymax

5 V) N" O  U4 H& z4 `2 M* ]end
; d0 j. t) [' m% }+ H- E) [
7 p+ b# t: n, f$ \6 C( C* pto do-plots7 R$ W6 P: K) U0 I4 r' \( m& R
set-current-plot "Trends-of-Local-reputation"7 {. l6 u0 `- H( ]& G( |1 I0 E
set-current-plot-pen "Honest service"
( B1 t) Q7 {5 t6 g9 {- ^/ ~end
4 Z6 I/ u/ W, x* t: {
$ T; q6 H+ O+ Y( I6 l; }[ 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.9 @5 b  P, L: R; G. v. B

2 o+ W( b- S* ^8 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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