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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:  m  B( C! m6 g  {5 f
to do-business
8 o8 G1 h9 e  Q$ w, h( l. l4 A rt random 360
5 c; i+ c" `3 L- B3 R* ~7 a fd 1' F, [8 w1 N9 Y, d9 P' z" t
ifelse(other turtles-here != nobody)[  ?' v: k' P5 i8 [7 Q. e
   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., O/ {) d1 ?6 p; s  p
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : u( W; J% i) u- `
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 C+ L1 g+ |4 I. m: Y   set [trade-record-one-len] of self length [trade-record-one] of self
* V- H: k; ?3 p$ n  o) W) S7 j9 H2 o   set trade-record-current( list (timer) (random money-upper-limit))
: G3 p4 b4 v1 h* Z. N' f
4 _) n/ ^2 S- |! L4 ?# X问题的提示如下:
' ~# X& Y" L* z6 f& n2 @2 Y2 y3 }! W' @1 x4 Y0 F
error while turtle 50 running OF in procedure DO-BUSINESS
5 T, w3 _: V# z' M8 J! }( t; s1 \  called by procedure GO5 R! B5 b* G: F2 @% I
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- x: e; r1 H5 h& |! D. |2 `7 I* S
(halted running of go)/ u% ^8 `6 [1 u

  O0 t5 X/ S/ \$ [: x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~~# i# b+ c, f: P) 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6 o# u+ y! h2 T
globals[$ s) b+ k; M) Y5 y
xmax1 ?' j5 s! U) ^+ z: y% }1 }6 |  S' Y
ymax6 {; n% m. I# Q2 c* D0 Y# h
global-reputation-list
! D3 N7 \$ N2 P* K# d- z+ z/ B( T7 L" i4 C$ P7 B. e& ^
;;
每一个turtle的全局声誉都存在此LIST
: C6 P; _' x9 e& a* Hcredibility-list
  t8 d! Z. `0 R# h; @;;
每一个turtle的评价可信度
) O4 z3 M& H8 v- O7 D! _honest-service
0 S% o) g8 b$ v  Bunhonest-service
8 p/ D! }1 p& w7 u" _  koscillation
# ]! [% f, o, }; x' c7 Q: R6 krand-dynamic
( m" o4 x4 Z# g* e& c6 p% o- o# H]
8 g. C; Q7 e9 Y6 e8 u
9 l9 f1 E: Y  {- k# Z' w6 {turtles-own[. }1 O: e: i4 T8 w9 W) e1 o
trade-record-all
5 |( E5 {- o; @. {; l+ x;;a list of lists,
trade-record-one组成
0 d& J8 p# L7 j. [: m' z4 h  {trade-record-one
0 f- \+ j  U; F0 m7 R! a8 m;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 j2 N: ^% g' K
4 R' _( U4 G* q4 H1 B;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]2 L- e( X1 ^2 y
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]
; r6 p- a$ {7 G7 Jcredibility-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+ ^8 ~7 |+ `/ p/ F- ]  g4 g
neighbor-total- ^1 J/ g$ Z( e; u
;;
记录该turtle的邻居节点的数目
( D" x. G; Y3 W5 A* B6 S, C! A& e( ?trade-time
) N' K) `6 U, X" I' O3 s;;
当前发生交易的turtle的交易时间7 M7 b; i5 S) a& P; i
appraise-give9 _0 i, @, J6 _" \2 v& W7 Q
;;
当前发生交易时给出的评价7 Z) A. S/ `( S! l
appraise-receive& ?2 f4 j$ Y( N* Z( Q1 ]
;;
当前发生交易时收到的评价
2 G+ h1 z4 Y; X1 u* U) Jappraise-time7 I7 U5 @$ w9 K
;;
当前发生交易时的评价时间
& Q& G; J$ a8 l8 q* Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 e2 z2 J4 A  t8 l% b9 v; U, K9 strade-times-total% M$ [! x% W+ ?/ s- \* \" Q
;;
与当前turtle的交易总次数
1 e3 m0 |4 s8 l, J. g+ dtrade-money-total
( t1 G( B& ~- M. v; s+ Y( B;;
与当前turtle的交易总金额7 m2 K6 q' s+ {- `" b$ w
local-reputation
* Q9 t4 h% A% Dglobal-reputation
, a6 n  N2 d# W* Rcredibility
' v" R8 f) r/ \: {& n+ o;;
评价可信度,每次交易后都需要更新) H7 J9 T9 Q( X7 a( _( B8 F
credibility-all8 r. n# ~4 ~1 P9 T  r$ 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
& g: C# p% n3 o5 N
3 J* L$ P+ j( B& ?: f7 W;;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
4 r( c* U/ R8 C: Y5 L! Hcredibility-one* ]" ?0 l) ], j5 X8 ]9 b$ V# V
;;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, p. @% C0 k8 q  {$ R
global-proportion3 w& y" c4 W* i
customer
0 z. I7 z6 h7 w. _customer-no
3 l$ A2 p+ ^% Itrust-ok6 z; s9 M5 q! p' }9 X
trade-record-one-len;;trade-record-one的长度
3 Z3 ^% _8 w. q' v: V& M/ C]0 w9 q: R8 y# G* z0 i  @
0 p$ ]/ ?8 D0 Q. ]
;;setup procedure
" M: h4 U# S0 R
# y2 L$ W6 i0 s7 dto setup0 ]) w  H# L- I4 B

0 ~- `4 }' q/ D% A7 X( I- [' oca

9 m' r+ _+ P( f9 D' k% ?$ A
/ j2 l3 f( s3 l; w! l6 W$ S" R! Kinitialize-settings

# p$ k8 \3 l" h" ~
4 \. v, o5 l8 i' W' F2 \crt people [setup-turtles]
, G) b6 _- [8 Y7 T8 n
( C8 Y5 a5 D0 V9 e$ E' z2 i
reset-timer
( E  b  s' b; A9 q' i4 U  c
- A; v. Q# o# a/ Y" q2 |& }7 x
poll-class

+ K/ |' h! I6 p, H
6 C1 n4 ^  y* Vsetup-plots

# D6 O) o$ X& m- K+ Z8 x1 C7 x8 X- @+ r0 f, H/ W
do-plots
# q- D# f! ?, q5 r% ?, \/ y: m
end; U4 Q4 n2 Q5 z7 p0 X

0 h# A+ P4 j+ p# t% Qto initialize-settings& o6 c8 c6 T' q7 }' O/ y2 Q8 c

: \1 M9 }6 t- C- G- k  Q* Bset global-reputation-list []
$ ]* X; q. _( Q* C# }

% W5 P9 v; C; O( wset credibility-list n-values people [0.5]

( _* y1 L; x. s0 C5 }, R& Q: e* S& ^( Y% d+ u
set honest-service 0
3 e$ N1 X# ^$ B' C& D
  L: N8 I  T6 Y$ Y% |
set unhonest-service 0

9 v3 r; [6 }* N4 E5 r) d6 N# z! ~
: o8 b/ ~, n+ f' r- e% r- V2 fset oscillation 0

6 m9 Y9 m2 L6 j, D, f) R4 U) r% t2 l
set rand-dynamic 0

5 b% p% \' d, u% }0 u" @; i! \  [end. h" R- a' e' ?. Q/ N4 U; V

# N& ^" |; O+ @7 O% pto setup-turtles
: T9 |" L* ]) [/ Dset shape "person"9 d6 c: [, a3 i$ G
setxy random-xcor random-ycor: S- `1 D. N; W& P! F
set trade-record-one []
% a$ ^" O- I& {/ B0 c; L
; |% C) u4 i$ o2 B+ P( W
set trade-record-all n-values people [(list (? + 1) 0 0)]
7 g' C: ^* J. h' |* s! P8 K" f

6 T6 o7 y7 i9 `% n0 Lset trade-record-current []
# Y# G7 y7 o1 H  c& e8 @) ^/ m) g' e& dset credibility-receive []
4 F/ S. T5 `4 Z, X1 fset local-reputation 0.5
# L9 K; f' X' kset neighbor-total 0
0 N# O+ T& r) Pset trade-times-total 0: b( `+ W9 s6 y/ J1 B4 I; c4 v! w# z
set trade-money-total 0
: [5 ~0 v; W; ]8 R2 n* zset customer nobody
, @' T3 W9 Z- f  ?" Z; cset credibility-all n-values people [creat-credibility]
5 K6 b0 i5 u; m: D$ b+ d; Sset credibility n-values people [-1]& J% e5 I" Q( J( t/ g& H
get-color
6 D' K: a/ }" E+ r' R. {
8 A/ U& h5 K/ |# j! z1 B+ @
end$ m! t* e7 U9 D% D- H

0 _( J( p4 @% f9 F' E# G# H$ _+ H( Zto-report creat-credibility
/ I3 e8 D0 g% M+ x6 t1 ]- Preport n-values people [0.5]$ V$ I: ]. }2 |( ^
end% G  {: a) R" U4 \( b4 B

) c, \: S, A. F' h+ Dto setup-plots! }! J/ k/ e2 B- e. m$ G( A

0 b7 D- d4 f0 U* s- i# L+ h& wset xmax 30

- D1 v' O- q( G( c; ?2 ?1 v
! c6 l% `: r. M. V3 Wset ymax 1.0
0 w, v  e  T3 G- w5 g
% L. o) G$ B- d! j' Y
clear-all-plots
& U6 B* A7 I( i( U

, Z9 U3 U( ~4 P: m, [; R( V. X7 esetup-plot1
$ p$ y1 w5 g7 b! C. p
% F" a" c9 e! C3 X+ n
setup-plot2
! q9 f! w) s; G$ ^3 d

+ G5 @  b3 x) b7 l: D6 lsetup-plot3

' J2 s+ J. `2 P' {end4 I& M% G& K3 v4 k% c+ ~
5 c% t7 x% H9 y2 m( E
;;run time procedures
7 J9 B  {: h4 A& H0 H1 i, Z! H4 N$ ?; ]% j
to go
0 S' v2 d& e! ^/ @2 u0 z: C0 ^/ x+ Z3 ]% V2 z
ask turtles [do-business]
. ~, q2 ?2 l) U/ L! m
end
6 m5 {  k: c* b/ Z' X2 @2 E! y  Z5 I
* ~' l3 Y) {" Q2 N; h! \5 `9 ]to do-business
. V& T7 y8 c) a  x: H: v

: t( J' f/ F( t! a# l4 n- s
  Y4 o; c- c, A5 Q/ vrt random 360
3 x0 u- ?  Q# @, f, T4 v9 L

* U8 [2 U1 Y4 X  r8 I% xfd 1
2 ?5 h2 _& w2 c' D4 z. b
2 v: O- L+ J# j
ifelse(other turtles-here != nobody)[

0 }1 w, D5 l3 \. B
2 g( i. ]* h* eset customer one-of other turtles-here
- N/ E9 }' D% B/ A

) L3 \. U, j3 B. u- O;; set [customer] of customer myself
( k8 @1 \  U3 t% `7 `. d

% L! R- |* S+ ?4 b/ Eset [trade-record-one] of self item (([who] of customer) - 1)% z6 ~- R- _5 d8 I/ A9 r
[trade-record-all]of self
: M6 ]- R( j- u9 ];;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, e4 q3 W' b7 d3 R% T7 D
/ L1 M) U5 L6 dset [trade-record-one] of customer item (([who] of self) - 1)
% Z* }. s! D: y* ~/ ^[trade-record-all]of customer

# U' |7 Z8 q; k% g3 l( H% I
1 i) c' H; q+ A/ g: b8 {set [trade-record-one-len] of self length [trade-record-one] of self

' O5 z' H! O8 J: S+ _0 D+ l$ L& N
set trade-record-current( list (timer) (random money-upper-limit))

/ Y2 A, \) m, O4 c0 B9 E' X8 |2 R: L1 k
ask self [do-trust]
$ P. B; _) V7 F: ^;;
先求ij的信任度
/ C3 |# v) w0 f9 S  t. p3 u9 }. K# c1 [9 @7 D* `: \3 k
if ([trust-ok] of self)
9 {  t& R  i* |& P6 s( s* T3 E;;
根据ij的信任度来决定是否与j进行交易[
4 J# H  A6 M& u# T( Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 Z. ^  R9 E9 \  e

  A" n, r! z+ D$ t0 {0 T7 t8 L/ m[
. V% Q  K0 A' n% k' [

; e1 v1 d# ]1 v" `3 odo-trade

3 q2 O6 i: N1 z  ]# _9 W8 i
* I: k, I! w: jupdate-credibility-ijl

4 C6 t( y5 C" Y, w
0 U2 s( X# E2 u/ g. J. f# x' i1 pupdate-credibility-list* i& }! v+ G8 r( D( k4 N
# @6 \1 Q; X4 {5 T2 x

5 |8 Q0 U2 P7 W, G% P' F4 Aupdate-global-reputation-list

" y& W) [( l" d8 y6 u6 [4 R7 u+ _# v* T" a' I7 i$ f
poll-class

' l" l4 `( O0 }& Z# h3 U8 j
" O9 K# \" V$ M% ~6 [0 Xget-color

  y6 Z3 G8 c5 D4 |. p  K( `% ?  T5 x' h. }
]]
, z1 K' c% O$ i; O8 `2 D9 C6 w( c
! {# O9 R3 A9 u;;
如果所得的信任度满足条件,则进行交易
8 n6 u( K# o2 X6 \0 U
- K+ ?, W# i$ ^) H1 d4 y; x[
, f. `6 J4 J. [. T9 n' w8 I$ Q5 z

+ v7 s  J5 S6 S% j& o9 L( Q( w3 mrt random 360
$ I* @8 I" ~; h: B8 V$ p# l

0 }6 \; C1 U/ }  F; cfd 1
& F8 J' k1 c; G) O5 d! b
& O2 u; R) |+ d7 _) c1 q
]

7 c5 n: n9 ^/ |+ i/ [6 A' a
9 f  v/ \5 |0 l( y# m8 Send
4 z8 G" u/ h3 H$ ~% Q+ L
4 {/ j' g$ C* }* s
to do-trust
, ^! ~2 X% q. ]; o, z' h+ jset trust-ok False
1 `, @/ ]+ Y0 H; |/ s" }0 p2 }
/ F1 _9 h; A6 `0 n

! J& d+ u" m8 g8 A, zlet max-trade-times 0
4 v) q; M2 m- Uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 @  E* R- P& w! Clet max-trade-money 04 ~. @. r7 G- N7 d/ m" j6 |' R7 g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. p, D" p0 V" A  o
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 S$ H# K0 l* V! C6 ~2 `! |

5 g" q; D% t' r+ f6 g8 ~* {
, w" u, h0 G& g7 {& j! I) c
get-global-proportion4 \' t; p+ `7 F
let trust-value
, r$ I4 z/ N! C1 z! plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

4 F+ r7 C8 A* D: Rif(trust-value > trade-trust-value)
8 K6 \+ R. {4 j, I[set trust-ok true]4 V$ Z: R7 i9 ], R5 _( W
end( j' v6 I" F  {0 u( O

6 M+ v. m; g- f( nto get-global-proportion0 |- }3 \, C4 e( ?" s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 c* Z* s$ M9 @1 F, U7 Z& s[set global-proportion 0]/ Q" v8 T! b, [% L% H
[let i 0
. B9 R- a4 f6 s" `8 g/ tlet sum-money 09 H1 `3 q* G4 |' h/ x
while[ i < people]
$ X& J. @0 k, G: S. a! r[
4 b6 }2 Y% y3 a7 U, n* D6 c4 K; Cif( length (item i
* H( o0 B% p# z& l/ u) J- `[trade-record-all] of customer) > 3 )

( ~) `  ?4 u6 N9 X; c[
9 S, J! h0 N( X6 B& Y2 C; Qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 \7 T' D2 u3 n# `3 s9 l2 m5 C
]" W8 N* ~3 q. H* u3 b8 r% N; Z
]
0 S1 m' ?9 j3 y) l& {6 hlet j 0
: B: @3 d8 v0 M9 Rlet note 0
* s" Z; J: O, a9 Y% |while[ j < people]' [( s% l: Q# E; r# E* _
[6 S$ r4 N/ ^) Q" c$ C/ U2 m9 l
if( length (item i
7 S8 J  O  u% j& K: w[trade-record-all] of customer) > 3 )

; G( c, E/ T/ Y( d& X[
5 _: L. R5 r: d- I8 q6 @2 }. jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' g9 T: ]. L& O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# `# e8 N! G  H/ D( b6 }1 i1 K[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* l* k3 s4 P# G" {# c
]
  c8 n% _7 y3 P9 p]
5 X: v  k9 m$ H6 c- D, oset global-proportion note
, C) f! X" ^( @, j9 G]/ P  V- A$ s( D- X$ H  q0 T) F
end% e+ {3 |$ j0 M

' M! X  D; P- Y) T: i' g, Xto do-trade  A9 ]  B. V% ?( ]* C0 d! ^
;;
这个过程实际上是给双方作出评价的过程" P$ ]( r1 E! _1 a+ a( Y6 S$ D$ w! Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 V8 a! _8 k) `( \, H$ hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) @. z0 F: [, }. `: I6 P: b8 tset trade-record-current lput(timer) trade-record-current# N/ ]8 z+ z( R6 @6 ?! U
;;
评价时间) I! L+ g" Z4 s1 O+ }
ask myself [, ^2 R2 I' C1 C/ Q
update-local-reputation
$ y) |1 {. J/ \( zset trade-record-current lput([local-reputation] of myself) trade-record-current8 W7 d! ?( F3 H& `
]. E$ k/ ]; N* b2 d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, c0 `, M0 d& y4 g;;
将此次交易的记录加入到trade-record-one5 [) E/ v9 V& H" ~. l3 h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" C' H- e5 {# k1 S- h* J# zlet note (item 2 trade-record-current )
, P4 d) J/ w3 Y0 B& n" Yset trade-record-current
  ^2 H6 _$ T) V6 d4 P$ c(replace-item 2 trade-record-current (item 3 trade-record-current))
* E# J* ~( w0 I
set trade-record-current8 f$ Y7 C% Q( o8 @
(replace-item 3 trade-record-current note)
( o$ L% E. j' }$ X% ]" L% X
, Y: n7 h& ?! ?8 l
1 Y6 ?3 n! k0 b  L
ask customer [- j) Y# Y2 T. P
update-local-reputation, l: j9 X% n4 C
set trade-record-current
5 N: P( b5 ?$ h. q- @. C  Y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 k7 H/ S+ {2 r  d]
2 R) n8 [1 g/ O( \& y0 j% `6 q- Q; }1 Q4 N- U
2 o+ K9 g: W* n; \
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 I  v+ `1 C4 c5 j
$ N+ z* k# }. H: l- N. S% d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 ~* S* S: D9 g' }; \# k
;;
将此次交易的记录加入到customertrade-record-all1 ~  |# F- n" ^! E$ z5 P0 f
end
) O  n! p3 h3 p. [9 P6 x
, s! [$ }5 Y) t0 ^! mto update-local-reputation; g1 ]. o+ q& k0 @7 F* a( j
set [trade-record-one-len] of myself length [trade-record-one] of myself% }/ j9 x5 `6 z1 ?$ L/ E* p5 F

/ v- C# r3 g7 ]& @3 W& m0 A% Q  C8 v/ ~; s2 c( L/ g/ H4 n; _$ R( S
;;if [trade-record-one-len] of myself > 3

; }% ^/ {- ^. J" `update-neighbor-total
& g& r! q% v+ J7 k: A; R;;
更新邻居节点的数目,在此进行1 W) D( {, P2 H" q
let i 3
  S- V5 G2 w% V/ y9 O7 Blet sum-time 0
0 t! t5 ?0 m8 k' f, Twhile[i < [trade-record-one-len] of myself]
0 r, t+ V0 ?) }$ s) \[
+ D& s, m7 ?6 E! \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  s+ f& C! B' z: {
set i# u2 |6 ~7 d% [+ b" q1 W
( i + 1)
9 }7 x- L0 C# [+ K. j$ o
]
% W2 m6 b* u% b! |$ w0 U- S1 Rlet j 3+ I0 w$ x, j. s
let sum-money 0: p2 k- E% l/ i1 `7 p0 k' m
while[j < [trade-record-one-len] of myself]$ T! i, |) b( i6 Y0 W7 X# T; L) J. w3 b
[* f" y! ]& I& W
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)
' x9 u& A9 k) U: t, N- K1 [set j! l" H$ {/ l& b4 B
( j + 1)

# B. p! s& ^+ n/ ]& t5 F]
/ E: x3 M6 U) h5 e5 `3 Rlet k 3( F/ ^! q4 q* C) {0 h
let power 0
! E# Y& z. f% T" ~- |! Alet local 01 }# g( J) Z6 A8 [* ?0 o. n
while [k <[trade-record-one-len] of myself]
; \# o3 Z# w. d, A+ ]- G" ^[3 _! P9 g4 l" U" f
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) 2 {8 D& O9 G! |' q" A+ E
set k (k + 1)
% r* j, I: w% ^+ h# }]1 |* O: Z( X5 K& N6 b& g
set [local-reputation] of myself (local)# I  s  G* [% ~8 I1 g% Y6 ?( x
end$ N& F( y& P( X" H- @, O
% y5 f4 E- C% W4 A
to update-neighbor-total
! K9 A! b) `$ e4 {% X8 Y( D& \: P
/ {0 s. Y- v2 w: ]9 m$ {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# `7 j8 G2 ]) D8 b) ?! d
3 T8 y) n0 _* f- x

2 f/ C* K. I% O* \, ]+ \end
7 l# X0 O  Q( N$ L$ w5 |1 J+ v- ~5 Y: w+ p+ D1 v
to update-credibility-ijl   o! n" Y; h* _! `
  j. N% w: E$ A8 h( ^* B/ m
;;
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 J/ p( u) I, ^" Z. q% O" |: F' b
let l 03 c+ [! t" M  s5 }2 ^, f% U& [7 j
while[ l < people ]' {- ~3 P7 m  W% Z
;;
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( X/ c+ h4 ^1 E* b
[
6 d9 q9 Y" ]( L$ V" s) d% a6 @let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& I, b  q  L+ Z* Z( Vif (trade-record-one-j-l-len > 3)
! I( ?8 L* b  v% T% v! Z& N0 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
7 M* F$ ?# i  Jlet i 3; s0 r1 V" `8 o( L, [
let sum-time 06 {& z/ }! ?5 R
while[i < trade-record-one-len]
, K! `; D6 @( _# T[6 X2 l. E  }* i- W2 E; r
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. B4 E; j& n9 q2 y% ^set i1 V$ k. D3 q; t# c$ Z0 P
( i + 1)
1 z$ y8 H* D  c/ ~) ^( a4 S$ K/ s' c
]
) C* U7 o  O( N: `2 Z8 L8 E/ ylet credibility-i-j-l 09 M/ Q: o2 U0 |+ d/ _! P5 O
;;i
评价(jjl的评价)
8 `: G( j9 ^- \/ A4 J  ]3 h# ~0 r1 alet j 36 b7 {7 I7 {9 o% N1 G) _' ?- H
let k 4
$ q  B3 G) `9 P' u- G6 h0 H  [9 Lwhile[j < trade-record-one-len]
  P  h: |" e, P$ L[' g1 [3 m2 v+ g; ]8 O/ J8 z
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
0 G; k, ^: G2 g) C8 J2 B% v6 xset 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); w" F; g9 ^9 a7 H$ P
set j
) N9 E+ g) ~6 Z1 W" w" I5 E$ j( j + 1)
3 j& g2 j4 W3 a4 I6 b
]2 O! D$ J3 M! x4 B+ Z
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 ))
# L0 Y8 k1 Q+ S' R  }6 \( q4 x7 ?9 y3 Y9 f

7 s  X; o; ~( N8 j( hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& |2 x. F& A$ b% k% x( N/ A+ \1 z
;;
及时更新il的评价质量的评价
, j) e1 }, H' O0 ^set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; N  K1 F; \& x. \' mset l (l + 1)8 g9 n4 E+ z9 |( d* c
]- x/ _# J( w: H+ N+ q4 L
end
% H& F# N! R/ Q* T: l# R
6 j4 c- D  J1 ~/ `" H& B* lto update-credibility-list5 k- n( V8 ~* c/ L
let i 0  j6 {; p1 f6 F3 o& Q+ f$ V( Z
while[i < people]. g4 h) n; `& {1 N/ m- t
[
! L% q2 x; t8 p0 ]' |- ^let j 0, o8 Z6 X; |3 n5 e7 ~
let note 0
2 m+ S4 G# \& U% xlet k 0% d! i8 r. b  G, ^4 c
;;
计作出过评价的邻居节点的数目
: @, h( k( H% ~' Zwhile[j < people]
$ K) u+ Z% _9 z0 ]/ I5 D[0 S  t$ o0 ]) E7 W& O8 a! T
if (item j( [credibility] of turtle (i + 1)) != -1)) N' S, S  ~; {4 l: p3 l% a7 N+ H% R
;;
判断是否给本turtle的评价质量做出过评价的节点
1 t' ]9 D4 J' m! V* `[set note (note + item j ([credibility]of turtle (i + 1)))$ t& C1 k9 h: V) x5 m# R: x
;;*(exp (-(people - 2)))/(people - 2))]

9 o' h) ^+ D: ^' d% O- V2 jset k (k + 1)
# ?) w8 _, ?3 n5 g! K* t]' u/ m/ D6 U$ d& M2 y  l' c; D
set j (j + 1)
  Q; L4 b- `: s5 @1 m/ i0 z  z]5 I$ [) ?$ P. T& t" x, o2 W
set note (note *(exp (- (1 / k)))/ k)4 R% t" ~3 M/ G$ ~3 c& @
set credibility-list (replace-item i credibility-list note)
4 R2 Y' M, Q+ {( ^- Aset i (i + 1)* Q% {7 P: [: z( H
]) r' N8 U: p4 o- R* L) N
end7 y. B8 U( s9 z' E' Q8 u( [
2 @4 K7 l% k( Q/ f; E+ }( Z( c
to update-global-reputation-list* B/ l8 X" }2 |1 J, R" `6 c
let j 08 h. o- o5 U# ^4 D; g3 i
while[j < people]
: h, k7 k+ x0 b- l; j7 F" ]3 C[
2 b1 J1 Y, u5 j* e4 p, |let new 0
7 C: X9 m; \' }" B;;
暂存新的一个全局声誉2 k3 ^, }% x3 [7 ^6 b
let i 04 w7 H7 J0 k. b  o6 B( I5 V* q
let sum-money 0
5 d/ r3 c/ g4 qlet credibility-money 0
2 l+ a0 v  K" _6 p0 g8 Zwhile [i < people]
1 E! P& J. i8 t: A( x[
" z6 G! B$ Y8 f$ x: T. |- Sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ A' p; r5 h0 ]4 p* n/ J& P+ ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! N0 S8 F/ v$ o  K. f# p
set i (i + 1)
7 H$ s( b4 J( M* g9 V]/ P* Z5 U' }! t) V9 S9 v
let k 0
& V# I0 C" i: x& ]. z: c+ Blet new1 06 S; T  \; f& w% j% z
while [k < people]
& L5 `3 q3 H& N' s: n3 O[
+ A4 P4 T& x. O6 K* lset 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)
* I/ [' e' ~) m$ C# z2 bset k (k + 1)) t/ A$ I/ `. y' }
]
1 g  m- Y; @) \! p1 N( G& tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' Y* j5 y0 V1 p  I) w
set global-reputation-list (replace-item j global-reputation-list new)+ o# n- B0 |& O( b
set j (j + 1)' y+ |1 d+ J  n
]
. j3 L5 |: J$ Dend! Y, L; [" c" d: j6 j. o5 d

8 ]+ q8 V. K: }  b5 C4 ^/ i3 N4 b+ R# @# v/ Y; g+ o. U

. v% {% F, f: `# P' qto get-color7 r( K# B5 \& J  g( v+ g. z# V

, u! n8 |5 n* k+ N& b; dset color blue

  y' x1 I7 h+ K8 f7 bend
& B1 I  o' e+ B: ?
8 s5 Z+ j2 [# M( ^. x' X3 Q# Wto poll-class
1 t! p3 h) N$ Qend% F& W/ d" q; E+ r' g- g+ V
* [. ^/ t, v% y& M! w9 c$ ~; }& X
to setup-plot1
) i5 H9 F; G( F2 s( |0 ^( e( H) t
set-current-plot "Trends-of-Local-reputation"

, }- N9 W* g, B8 d
1 ?9 _4 ^; A! H# M, P) zset-plot-x-range 0 xmax

! H% R1 {8 F* x/ U& F# Y# E0 Q$ q0 M: ]. D( n, W
set-plot-y-range 0.0 ymax
4 Y1 w2 k$ M  Q; G( ]
end% B$ h" g8 q( r$ R

1 k3 ~" r5 l- `4 ?2 `, O7 Nto setup-plot2
- O# Y/ g3 [( o# D! b* y* \, o/ M; g  J5 Y* p4 w& N
set-current-plot "Trends-of-global-reputation"
. o' w; r& Q% F7 `- n+ B

! f0 @. j  U. v' bset-plot-x-range 0 xmax
$ Y  z8 ?0 v7 G& S4 F
, k: m, p. l: ]* r1 Y
set-plot-y-range 0.0 ymax

  I0 e0 l7 a  z- E9 L2 Z# q; zend
; g" v/ w9 o0 d& Z  J( Y  G6 V
0 a& n! C& Y8 \to setup-plot3$ [! A8 _, k( T2 c& x  d; l
  v6 H: d3 Q! _$ V3 S* P
set-current-plot "Trends-of-credibility"
9 {( w( h7 I% O# p9 q& d
+ N3 Z' n! N  B7 s$ n' d% J) {
set-plot-x-range 0 xmax

, s$ S4 B4 m3 C0 Y; F- n
5 {& q& w& Z' ], O- n1 D& c  Cset-plot-y-range 0.0 ymax
$ R- J/ ^3 g$ k  @7 ^2 ]' T
end& M# T  r. y+ e0 ?0 O4 K
7 t6 h4 T6 Y6 N
to do-plots% [  l$ j/ m5 l0 W
set-current-plot "Trends-of-Local-reputation"1 l& A6 m8 Y" z# q  i* q( ^, [
set-current-plot-pen "Honest service") a" m3 R6 L1 k1 `& Y
end7 \9 J4 B' v! k
5 F4 s3 Q3 B' K" F/ N- J( d6 S
[ 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.
" J# ~2 N2 A1 R* Y2 n& \; y! t: v- t- C. F- X& h
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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