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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:
' X( x: h7 C+ o8 k+ t! ]to do-business ' N2 T4 ]* H4 S/ j# P, j9 S( m7 ^5 m0 r( B
rt random 360+ a1 v- m' c7 o5 ]8 O5 _! G/ Y
fd 1
: H' H9 p, u- U, x  s' j& `) g ifelse(other turtles-here != nobody)[- R3 R, [. c3 Q& @- D& o- O
   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.
5 A0 W( W" b. x6 G% c# R; L, o   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ _* z5 a. N. p% }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ ]1 I. H: e& `8 i   set [trade-record-one-len] of self length [trade-record-one] of self
1 l% a+ m* }! M) \) R* S   set trade-record-current( list (timer) (random money-upper-limit))1 v6 t/ W) l( N) _: k/ }

( q, W6 |! W9 \. Y! c* r问题的提示如下:
# d* @+ h9 T$ F# u
# U, C6 ^. n6 ]# K0 A% h. gerror while turtle 50 running OF in procedure DO-BUSINESS
/ a- y- v! z* P9 f# X3 b% e: x  called by procedure GO( k9 E" O2 _1 G1 B/ f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& Y( s5 u( j3 ?; b0 v) R7 p% o( |
(halted running of go)5 j  @( h; {7 w1 J9 G7 o4 B! U

7 t: Y- b! l3 `' C' [. |! E) q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~~7 x2 @# o- C" ]" j/ t
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
. O2 v) c8 I& ]. dglobals[
# ]3 p$ f6 l/ hxmax
2 ^( B6 c6 y0 V+ [& ^5 hymax
, s" c) S6 M3 h) y# Eglobal-reputation-list
& p; v: s+ A( W2 e" y, W- y$ A. C2 t3 n
;;
每一个turtle的全局声誉都存在此LIST% v# n1 E. j) r' q# q& L/ l- @0 G- I
credibility-list% r1 m" o! G' n5 H1 G4 D, _
;;
每一个turtle的评价可信度
8 m- q: O! H# J  ^+ R& u2 Bhonest-service
, X; X  N9 ~4 m0 [- J  g0 |- funhonest-service% R+ ^% |- I. x* X; c) G
oscillation
7 H3 F& }# x, b: arand-dynamic
3 G: C4 R: N, G( {) M5 x) X0 v& z9 q]- h4 ~& F/ q+ P  _* w
+ u$ e* H" j' n1 o
turtles-own[5 b) |4 m% K# W7 r& W+ t, r1 f
trade-record-all* d- y" p8 U+ o+ W3 d
;;a list of lists,
trade-record-one组成
' q% s  c5 x% j* K& D3 E: B, k9 Mtrade-record-one
7 O5 |: Z; F  E4 F* g8 o$ [;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' N0 n2 r5 i4 k. R" m/ k3 [8 m5 H' F  J6 u8 X  y$ m
;;[
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]]
. B( E4 z+ g9 B$ Utrade-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 d, S( u# b6 h# j; ?5 Icredibility-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' l! \3 d2 c  V8 M8 K; k  y8 S' ~7 ?
neighbor-total
- i9 l  y3 x+ D+ S6 a, \0 J;;
记录该turtle的邻居节点的数目
5 ]! L; k, P$ V; u( {4 Etrade-time
+ f, q' W5 B) v8 I3 O;;
当前发生交易的turtle的交易时间
# p; n0 a  Q6 c1 C" s" n% e5 mappraise-give
$ X5 c9 D1 H( ~7 U' a8 t2 m6 Q$ g;;
当前发生交易时给出的评价
% E5 C9 h" P% G  U9 {appraise-receive
; e3 }( ^  Q3 F( r$ b5 }6 |;;
当前发生交易时收到的评价
+ ?- [" E7 d1 Q# h2 P- R3 ?1 M4 s( Q) dappraise-time1 G( m) f: m) A9 X5 y
;;
当前发生交易时的评价时间1 w$ K0 t- A& D3 B, h1 \! O
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) F7 c& ]7 x% X9 Q
trade-times-total
) q# E/ V4 W1 G) f7 v# R5 S;;
与当前turtle的交易总次数- d3 q' e5 ?- E: E3 P; X" q8 d
trade-money-total' G- G- Y/ W- F' H. t' E
;;
与当前turtle的交易总金额8 {5 M& r; w8 w7 y4 V3 e# Q
local-reputation
+ o8 E2 x4 h" S% p; \global-reputation
& Q. `4 g' `! \$ icredibility
* {6 U: s0 O* [1 d;;
评价可信度,每次交易后都需要更新4 A; g7 X& ?: v/ |" W4 u% t6 J
credibility-all; s  l9 N$ T4 Z2 x: e& D# ?& b
;;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
3 h. E; @1 O; X- h+ s4 Q
4 ]. o0 {  I9 }, k( u;;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, O% {, e; ^9 p; I8 g: D/ j
credibility-one& ^: E+ p5 v, e% a1 O: t
;;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people6 y8 R' q* @! T& b: ~$ f1 r- g
global-proportion
6 _1 m5 e# o6 ~4 r- U" N" Q( G' bcustomer+ c5 V7 H; C5 i$ C8 `; W* m
customer-no* d  k% x' b" E6 n1 K. ~
trust-ok- y6 R) K  K! D* S
trade-record-one-len;;trade-record-one的长度
# X) m  ]$ z9 n4 H3 W]  Q' t! M/ n' b
$ C  w( n  i% Y; Q; m8 I, O% H
;;setup procedure
- t# M# ?4 n% e* w. |4 E' W$ H6 _1 g9 \6 t! E9 ?) w
to setup* {6 R. ?+ X& B$ T1 F% j" C9 h
: I9 D( j- r8 J( E# k5 o
ca

  C8 ~# }! u0 h; q" W9 D
/ Z7 G# o3 O8 X; S0 F3 Sinitialize-settings

! l) H7 I& Z' P5 w& N* o
4 U- W  g4 e0 h3 \3 _7 n" X: Q1 g5 x: ]crt people [setup-turtles]

4 X# s# |, N" p9 J) a6 |1 o' A# A! |" ?4 s5 j
reset-timer
( b/ Z0 W$ V- I. _6 F3 {+ i

# w5 t! f- |8 i% R4 p9 bpoll-class

2 N& b' ]; G% n) q% s4 y8 L9 {
: [2 ]% P1 Z! u5 wsetup-plots

! i# e* I* x$ p7 G3 L. a6 R1 J$ T, X, p7 t  \. f2 U" ?$ m
do-plots
0 i6 {. @" x# B7 _7 O
end& O, d3 D- E( Q3 P. I" B
% `/ G  n0 @; p' R$ z8 p" p+ ]9 B6 V
to initialize-settings6 q* {& C% \; l* v, F
0 Y) r$ q: V' W4 _# D0 h) I- j
set global-reputation-list []

+ q" j+ ]: I% m3 j1 `0 a
- p& u0 v2 Y. ^' Z7 kset credibility-list n-values people [0.5]

. o, p0 z$ v/ N& w
# s4 I" E, R4 O7 U4 G8 {set honest-service 0

( ^) \% N: L3 ]3 F! E$ X! o7 |; f6 {; G  I
set unhonest-service 0

1 _, Q0 H) f% s  `# y& E
6 a) _: E/ J) _set oscillation 0
2 v' F& i* X& P% j, U+ z% p: a

5 B9 E* F7 \% Wset rand-dynamic 0
: W. Q& q& W+ j1 G: `7 ?2 G7 h
end
. N9 A7 i4 D4 @$ _
1 }, r$ \  m( o- f( Xto setup-turtles
( a/ J- D. I9 {: g* }set shape "person"$ `2 C( M  q3 n, N
setxy random-xcor random-ycor
( a4 ]/ ~2 R( Vset trade-record-one []
9 x# a; ^1 a- }0 g

3 I% C. @# ]& D' K' A6 |+ s, {& kset trade-record-all n-values people [(list (? + 1) 0 0)]
# K8 i% u- `/ r6 K* C

+ J: N: p4 I. b$ i7 F3 p0 k7 iset trade-record-current []) Y3 G* {) ~% y8 Z3 m0 T% |1 _
set credibility-receive []+ C) U; d" w$ ]7 _
set local-reputation 0.5! M8 _- G+ O4 |8 t
set neighbor-total 0& x0 i  H" V* z' ?& s& i+ I* T3 }/ {
set trade-times-total 0
/ u- {  s2 s: r- b  H9 i0 B, l0 pset trade-money-total 02 V4 I4 b8 L/ i
set customer nobody
/ a. n, `) P: m" [, \9 n8 ?set credibility-all n-values people [creat-credibility]
' J) ^/ R% z6 t4 r7 Z% yset credibility n-values people [-1]8 M* J# ]1 u4 H( ~
get-color6 J" n6 T- \5 y, X

; ?1 _, D9 H4 pend! ]/ O* s: @* s" Q( h
; n' H4 i) i6 O" T+ U. X. Q9 y
to-report creat-credibility, s* K$ Y3 j+ J& V  v  J$ P. D
report n-values people [0.5]7 h0 G$ L4 c0 n* {
end
) [! p- N8 F' M2 F0 L
$ H9 \# J4 K* u1 y6 p3 G7 rto setup-plots/ ^2 k. M: A4 I1 F9 G& A9 }

- P3 d! L4 l5 |1 d) L2 Tset xmax 30
8 ^% j% ^! ]3 I/ H: j# |3 N
! a3 H0 S; `9 M5 B
set ymax 1.0
% G% B& l/ Y& }$ _0 A
: H* j6 k; K8 L0 J/ [# S' L8 e
clear-all-plots
% ~$ @$ V) p5 l

. c6 n/ x  v& D; ?" P9 L4 N  Fsetup-plot1

. G6 L- ]3 A' V8 E9 M& ]9 c0 \8 K. ?2 ]( K3 y4 D/ B/ ~" b
setup-plot2

! m$ N6 V* s) m8 V* _3 `$ H# v
. g: m6 {/ \" ^2 m/ g+ g& Rsetup-plot3

* X+ q- C4 p* U( g! u, send# y' C4 g) |, Z9 M8 _% A0 ]  ~

+ n6 V' S3 l1 K8 ]& L;;run time procedures
6 p' R, E& d5 @0 b. t7 O5 z1 r
5 B  E" C; S. L0 h+ V4 w) Mto go
& k( c2 T# {. E2 Y% d  F5 K5 I0 G  n* D- g5 @
ask turtles [do-business]

( }' g- ]% W& a3 `$ u7 t$ zend. o# _& d* [& N) v. s

& M: p7 b& y+ ?3 n  pto do-business
% E- I5 \" T5 F3 ~& a7 `
. e: ]0 S8 C. k8 N/ m0 n& F. A
2 t) r; e; F7 e& x
rt random 360
  w- a+ @* l9 v& O
3 a+ T3 S' h5 u/ ?( B
fd 1
7 @, H* }% {$ u) p7 @
1 t1 q* m9 R& v/ B! k% u
ifelse(other turtles-here != nobody)[
$ M* ]) w$ N6 p" b) m
2 ~' [4 z0 S+ c  g) B+ ?$ L
set customer one-of other turtles-here
( [  ^( Y- D- x% m/ @
3 X. h4 o+ Q; b
;; set [customer] of customer myself
: \3 f& K5 S, U6 N
2 G+ `1 J* F8 ]# a: u
set [trade-record-one] of self item (([who] of customer) - 1)) k" d# I$ W* x& o
[trade-record-all]of self: R- F) F! n7 [* Y! I$ D! y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ z+ x0 t1 X* @9 o
( h: L1 b) z* E, i$ }3 j
set [trade-record-one] of customer item (([who] of self) - 1)
* ~3 W# d4 z1 y8 l8 e5 n[trade-record-all]of customer
- F' t* \! O$ b5 K  a, m

) x5 |4 Z  j% y- Q) r# ]( d( @9 oset [trade-record-one-len] of self length [trade-record-one] of self

' g- W6 o3 y1 H! |/ E6 \- Y. h
4 Z# d( W* e" P% t6 kset trade-record-current( list (timer) (random money-upper-limit))

: y3 g3 t3 _* J& G+ H. c. s
4 c. h; S. z  wask self [do-trust], q8 D& O7 c% g
;;
先求ij的信任度
  P6 s$ x- q! u6 ?! f9 M2 R$ M$ l+ R
$ ^+ x: t0 P2 }+ ^" y8 w1 [if ([trust-ok] of self)
3 X! [. _- L; R;;
根据ij的信任度来决定是否与j进行交易[4 N/ c+ A( i) U( k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 _) O4 H, q1 X4 I4 ~  Z
7 i2 {6 F6 R% c( ~5 x8 k4 J9 [' ?
[

" R+ W& n( l- L! m" E7 V% o* ?) ~2 J" ^! E9 T/ B1 {
do-trade

3 x( y. `2 ]* T+ W4 g( X0 s! u3 N: \3 W: r# \0 {
update-credibility-ijl
/ }! H: H) M0 q* j
" m# s1 l3 [) K$ C; o4 f
update-credibility-list, r3 X) @6 Y8 x+ a8 Q& q% I

. u3 \; Y# L2 q& n. |8 v, o% m9 Y3 J$ M5 q4 H3 ~: o; s" M. {
update-global-reputation-list
, d% E  T( V8 [1 l
0 C# y0 v9 Q7 g$ {1 A( L
poll-class

: {2 d0 C6 ~# h$ N) R, o) W
# H/ p+ a# h# i/ k1 mget-color
! M7 l0 D' Z! [

: c4 E8 @& Z9 m0 m& s( Y" f0 w]]' f7 Z1 A9 q' }2 U+ G2 S. z; T

$ ^6 d1 ]; k! f5 z;;
如果所得的信任度满足条件,则进行交易" M7 m) O) Q: y

7 C% O% K; w! B3 n) |5 K[
7 y. i+ C7 t' c4 e8 A
+ g# L8 g) Q! S( C
rt random 360

7 `: P, y+ E. ?  a6 n/ o6 k' b' V! b( A# {5 ?
fd 1
( G4 J7 j1 l8 r2 E8 j! e( F7 h8 U" X: N
" T& U6 C2 m; M4 a6 o* }  u; K
]

  Q- p! W9 [+ ?  |& [
$ l8 V; U% }( C7 g* p) Q8 Zend

5 R' I! g3 p, K5 L8 Y/ r
7 p+ H1 v6 [) A" c9 U7 Kto do-trust 5 S. H6 L' o, m! Z$ G8 o9 x0 F
set trust-ok False' e: G9 {7 M4 L1 |2 _- E
8 z# f+ ]( Q& w6 K6 O% Z

* J2 b  E8 V+ a" }  y9 t& k( dlet max-trade-times 0$ _( {% n. S9 O- v0 C/ \- ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! Y# j+ j( o+ i0 l$ _2 H% Wlet max-trade-money 0
" B* ^/ {. M3 ?2 y" a9 V7 Kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" j" E8 Y- c1 o+ D3 X  alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); u  q% F4 U9 F9 T! U3 I
: \, ], @& O7 X0 \

1 S- G7 g  N8 \6 l) K- M6 j2 D/ Pget-global-proportion! m2 ^: w9 b) h) l. N, i; i
let trust-value
) S5 ~, i, N# Rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( L1 X) c6 E6 p- i1 M
if(trust-value > trade-trust-value)$ b$ W6 `% ^4 U" l
[set trust-ok true]! B- p7 J( w  S9 L5 K& C) ~
end) i3 f4 b# j/ M  b2 ^- u

; `3 I; B% w8 X4 X/ I! |  [to get-global-proportion/ J8 W$ s* [8 h- b  R1 Q+ A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): }" z0 s2 ]% @0 r
[set global-proportion 0]5 r+ R$ u/ d$ `$ s
[let i 0* ~5 j- w, _6 N1 W) m
let sum-money 0* j0 t8 v2 b) K
while[ i < people]
& U2 B( v% V4 l4 O' S[% {/ x) {( ^2 o+ g9 ?1 b' Z6 q' @
if( length (item i) H2 o, [( S7 V( b4 a# S2 _
[trade-record-all] of customer) > 3 )
! C# v  x  |$ i' t% H2 e( ?
[
; B+ L4 i; ^+ ?( |9 Tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, S: Q" m. c- `; h]( b! Q3 j$ ?9 N; S' u$ Z
]6 k8 a+ ?' X4 C" ?& H
let j 07 W' S) O) t: Y
let note 0
$ b0 {9 P* C+ g" X1 [% ?" \5 I! hwhile[ j < people]
7 ~# y& @1 b  N4 w[
# r3 _% s0 u; L% _+ {! jif( length (item i+ r/ |! f3 L2 k9 z7 ^
[trade-record-all] of customer) > 3 )
  [, a2 r0 A/ T- h
[# W$ m* G8 m/ |" y9 S  g, |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 T1 a. G% m, F+ b6 ?+ H5 E6 H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  E+ t* w# V; ]& u% F
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% ?' n2 L* X/ l" b
]
  |$ N+ Y9 }% [7 o]# b1 z2 ^6 ^' G4 k+ Y3 O
set global-proportion note
3 h5 D/ H" ^5 h' Z$ ~]2 t( \/ m1 I% ~8 a2 t  Y& ?9 W
end/ d' H7 c8 _; ?: h6 b3 T

/ T. b' t/ M3 H# i; p& u, [to do-trade6 e+ ~$ r' a9 d4 ]& {" M4 x
;;
这个过程实际上是给双方作出评价的过程; i, y+ K7 S; k# h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) q% }5 g3 o$ V3 h  X- {6 W8 \# {9 kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 M1 v2 L# z8 V2 j+ S& Kset trade-record-current lput(timer) trade-record-current. |9 U! @! j1 j7 G# S) |6 ]
;;
评价时间
$ J; e* C2 b2 C) r( w) F$ Aask myself [
& T! C! X4 k6 Iupdate-local-reputation
' L, E9 A. S9 s4 P! S! Tset trade-record-current lput([local-reputation] of myself) trade-record-current4 h! ~! S: |" P2 [! ]
]& i% ~( e) j4 V1 R* j* `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. v9 H, [! ~$ L3 W: a  S) k
;;
将此次交易的记录加入到trade-record-one
: Y; g) e* \. b3 o6 l3 oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ N( [- t$ }- J1 w  blet note (item 2 trade-record-current )
1 k( a- o9 j, k6 y  ^set trade-record-current
: z7 ?) S7 k) L! R2 q. ~4 |(replace-item 2 trade-record-current (item 3 trade-record-current))
" @  i) B2 O1 n; E- G! m# b, n
set trade-record-current
) }6 m2 \; V0 w8 |+ x(replace-item 3 trade-record-current note)
9 \! @/ P* X" C% `$ a1 T" j7 x) z+ ]$ O: Q% }' f
( \3 x' t. u0 f& m( y
ask customer [+ [4 a* M7 t0 X; S1 X  Y  V. ^
update-local-reputation
5 F* S. @: F9 N; Rset trade-record-current
  J5 _6 `+ Z$ p# r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 Z( L6 X, w* \; `  K
]
/ y( Q& m5 t5 D0 J
9 j5 _1 s' ]; X. O
; K  y" B( R4 m( k/ H, g! G' {6 g
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 y& i0 d  ?) V) N

& Y9 M& s  _- L7 P9 h0 y4 [. xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ c0 W# L' v; Z7 V) h( k, q) ?- G;;
将此次交易的记录加入到customertrade-record-all
$ s& P1 b% b: y7 F7 Zend7 P9 o6 f% _$ O+ o" T; `* l
- p# L" a9 H4 Q) X% L8 s
to update-local-reputation
5 [0 r9 R" \! _6 O. Sset [trade-record-one-len] of myself length [trade-record-one] of myself
% J. W3 g3 h5 J  j
% g1 f4 C! K4 J" l- Z9 p& y# ]+ g6 @7 u1 M& M( A8 W( t
;;if [trade-record-one-len] of myself > 3

1 j9 [( C" c# l- S0 q+ s! {update-neighbor-total
4 R/ {6 m1 _) {) k# F;;
更新邻居节点的数目,在此进行; R9 A) V0 |, K9 |
let i 31 l3 i/ W* ~1 ~0 L0 i/ H8 Y6 h# E
let sum-time 0$ l) ]8 R6 I" Q) I
while[i < [trade-record-one-len] of myself]
& [8 [  |& d: T3 x" }; B& e4 W[
6 R/ ~0 O+ `7 E7 M+ ?( a" Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ t% K9 S2 n9 p. Uset i
, b9 E4 z+ w  @3 c5 \$ B( i + 1)
; m* F0 P$ x% w. i
]
5 o+ a$ X/ v/ L( @6 j1 C: v& D- rlet j 3
: j) @3 S4 J" J, z1 ^) Ylet sum-money 0
" _8 s. F* V5 |5 r9 n0 r. cwhile[j < [trade-record-one-len] of myself]
& j# w/ T8 N# M; U[7 o) J& D) ?7 ]( v0 o
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)
8 j& Z" d$ O5 L/ u) @( U; Rset j4 E5 }! H9 c3 L$ V
( j + 1)
' J- T) n/ r5 u  y& o
]
  A4 Q( ?, p2 C6 L" H3 dlet k 3% T0 R8 ?% [3 e2 W% j4 w' I
let power 03 g* [2 K# q  M: d* l
let local 07 ^6 Z$ w6 y/ @
while [k <[trade-record-one-len] of myself]  q: X. M: `4 X1 ^$ U
[
, j/ e" X5 `# Z7 p3 g- Zset 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) 7 O9 p  i0 e: ]9 d6 s
set k (k + 1)* s$ a) Y: I# X- F$ [+ Z
]
) s  \' x- _" f' }set [local-reputation] of myself (local)
+ B. t) s  h& `! x0 d* {end/ O  e% k. V' l; V2 Q0 ~
- m3 o& i* b( I
to update-neighbor-total
" r1 o6 \8 T/ X# y% e
7 F! ]- x- o. J# d8 d1 r7 `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& L) Q+ ^$ _" K0 \2 v

9 }- Q( v: x1 c( l2 }; I4 E6 g: O

1 U1 F, o) J7 L: ]end
, C5 l! G; w3 y% \+ \4 k" z; S" v. |6 v( v- x% ]
to update-credibility-ijl 5 Y; k% }6 F: S' ~" x
6 _9 @, {! U! t5 L2 C; [! j9 z
;;
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。" b+ Y% X& V. f0 p- c' A
let l 0- x; u% f( i, C, f
while[ l < people ]
3 U3 m7 G+ z' Q, I% l2 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$ O: _7 Z* Z1 D- `" D+ p. R9 Z
[& w& A" {6 c& C  k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- {: Y, ~  `* h$ e/ jif (trade-record-one-j-l-len > 3)0 ~6 i& g9 d; I/ @8 S
[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-one9 W+ O# b2 d: {# ^$ Q7 L$ N  P
let i 3
/ K6 {' Z: R$ h( r" y- {! klet sum-time 0* _# ]! t9 W: N# t( F! a
while[i < trade-record-one-len]% e; N- W( q+ ~  o) V
[, ~4 i2 x0 u% p4 C7 K. J, n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! e1 H* a6 c& T9 U( d
set i
' s9 w5 L8 p* ]2 Z' d( i + 1)

, d3 @5 ]0 N; b# x) k" U, u8 ]]
% W  I% ^5 j. y0 V7 Klet credibility-i-j-l 06 q! c3 R! Y1 f4 d! P9 F: T
;;i
评价(jjl的评价)
# v$ I) W% l6 [" F5 clet j 3
6 ^; ~( n& b( D! X: H- g! Zlet k 41 |9 b5 J" K" ^) G/ A+ a8 p' \
while[j < trade-record-one-len]
' O& \' F0 R3 t+ b/ u' X1 t, C& p[
0 |- o# r3 |- Y- X, ]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( b! ~8 Z8 J9 ^4 x
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)
/ J! @( b1 A( i$ x' f, K$ K5 mset j
! A3 h1 M8 o) _( j + 1)
' d! i% U, o! v, p1 O1 A8 P2 a8 w
]
4 }0 Z, L; Z2 V" hset [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 ))
6 B% w2 s1 T  o% B) Q, l
+ ]0 m  p0 {8 }+ h  G

; ^* z: ~; H5 r8 I5 i( W. Alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 h4 E/ W/ ]2 S2 k
;;
及时更新il的评价质量的评价/ A- Z, P1 i- {) r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' D% h/ I* {& b( T
set l (l + 1)
) Q9 @5 Y, U* P  Q], K; r5 a1 e$ d
end
, u( t' u3 t% C3 V# z$ G( N4 v
+ @) q( u2 i  M& Bto update-credibility-list
, Y: z( F8 O6 {( r2 A$ I8 g9 E: Ylet i 0
; ?$ a3 t1 i! O- p6 m! t7 Owhile[i < people]4 h  {" `- B  s( S
[7 d, a/ [* u' n  K
let j 0. u. G- r& i1 {: j. {( {
let note 0
: t+ z  k- n4 Z! \let k 0" j5 k/ n( M* [' h
;;
计作出过评价的邻居节点的数目
5 i3 p% h- U( Cwhile[j < people]6 V: G; }8 t1 @! a! o) b5 R
[
, J* |( _. S. K  vif (item j( [credibility] of turtle (i + 1)) != -1), K9 k2 _0 b* ?  w4 @  {3 E
;;
判断是否给本turtle的评价质量做出过评价的节点2 `* G, f8 ?* D$ ?* V" c
[set note (note + item j ([credibility]of turtle (i + 1)))
1 a5 @0 q2 Y9 J& |;;*(exp (-(people - 2)))/(people - 2))]

# h. r' c5 ^0 z  B( `- E3 X- [set k (k + 1), g3 Y% q  e. Z& H* [/ O
]5 C6 b- j4 f! N+ v" G6 p1 l9 R3 o! C
set j (j + 1)4 O+ s% t$ g1 p6 o
]$ C5 H' G5 f- [) C8 {% W
set note (note *(exp (- (1 / k)))/ k)
& h) P: A& Z" W: }; E( l- [; Pset credibility-list (replace-item i credibility-list note)
/ `* J+ p6 \( S/ L8 ]# xset i (i + 1)( t. x' v' P) G  q8 ?+ h
]
+ B+ U/ [2 N/ C" r6 c, rend0 V: X( j1 B/ e: O! H
- v, _8 ^, M( s! D0 M
to update-global-reputation-list
: E' g9 ?" O! E7 v5 I- xlet j 02 \% a5 R# K: L& J+ F9 J
while[j < people]
$ Z2 d; o* s1 Y: l& y[# d- b0 r; ^' v9 P
let new 0/ B8 j3 ^5 H, @0 Y7 K3 z
;;
暂存新的一个全局声誉2 U( i+ y5 h+ W
let i 09 V: `" v# x3 K6 ]6 m3 _' ^/ _# H
let sum-money 0
3 E8 K$ Y! A" R. H2 }/ [+ ]let credibility-money 0
; e) h! S: u* c2 X4 d) V. X! qwhile [i < people]
; m9 g) ~! X7 A( I[! q* q5 T5 x& e
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( h6 `- D; v4 S: k0 lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. ]0 z  X0 X; W# v5 Sset i (i + 1), N# g5 D- h8 ~4 ?
]
9 K: M( c$ P; x) vlet k 0, e$ S9 j# }1 k5 `2 G$ S8 j3 U" V, s
let new1 0
+ d) e- H: p, Y1 R0 Gwhile [k < people]7 u5 ^1 J+ o2 g3 t/ a
[
# `) I  _2 B9 y5 D( o* `# Kset 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)' S5 i6 m! k' w+ w# S
set k (k + 1); q1 D# Z4 d* [* L3 B" d5 v9 }
]: \  x8 \$ ]' a( s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! J; E+ {( ]; V. \( D( `! k8 p5 R" p
set global-reputation-list (replace-item j global-reputation-list new)
/ ?( Q! h/ C8 Mset j (j + 1). B; }) o: k& F4 F3 d
]9 E5 F* f+ d6 s$ X+ ^
end$ b/ o- |. y2 b
# m1 D5 @0 ?5 v8 X5 v( b
6 U7 d  N+ E0 s& V# b0 K* l. D$ F8 Q

. x6 X( @" ?; h3 p/ z$ W- |$ m, Y: Bto get-color
+ v, q8 t' b) Y
& e" u! u9 s( O& k7 P8 Xset color blue
( p5 f0 g, U- @! m, i0 {% ?: b! U) X
end# A, G+ }$ \# f  _1 i

; B- Z5 i4 R/ C4 q- _9 [5 \to poll-class/ J# S4 @6 p/ _) A: D4 `9 a
end& ~9 W; [- z* [: E. U9 \1 }5 }

' \7 D* ]/ N6 E8 g. Q& P$ @' Uto setup-plot10 M; Q' L! r& |  R

' L/ A; s! U9 @8 L; E  bset-current-plot "Trends-of-Local-reputation"

7 q6 o$ i3 j; Q5 B0 x8 Y
$ {: E% e: }7 o7 a8 vset-plot-x-range 0 xmax

6 f: I0 ]: K/ P3 @6 Y
* V) {* E. B6 Pset-plot-y-range 0.0 ymax

5 x! j9 r! g% o1 Y9 ?end
4 X$ w9 U3 k' f, Z
* O; N; R$ i8 l4 f( ~: t/ z/ ~to setup-plot2. `3 A. J" }( t/ o: }
' x% b9 d, p" _' L
set-current-plot "Trends-of-global-reputation"

( j1 w/ X1 j% I8 E% @
! E9 W$ d7 j6 m: ]1 ^( kset-plot-x-range 0 xmax

4 U9 c# z$ ~/ e; ^8 K) V# @
; y6 ?. g3 h" e2 k6 xset-plot-y-range 0.0 ymax

; [7 U& W+ a4 n3 h, C( i% Wend5 V: U; E$ h; D+ R( Y# A. e
& `3 c+ Z% Q+ B/ f& |. }
to setup-plot3: }3 y4 e+ t7 {$ E4 e! m  z

# G3 A, g9 a/ P  b" F# r6 Uset-current-plot "Trends-of-credibility"
& C7 [; d! {8 y8 X" i4 O* A

. ~4 ]# @: u+ s2 w$ Oset-plot-x-range 0 xmax
$ U7 F- r6 M* @0 g& \1 e  N; ^" p

3 Z- ^  {& F8 e( J5 K7 Tset-plot-y-range 0.0 ymax

. ?- J( l8 ]& T' a8 V+ s5 w6 Xend
# X- t: W. Z( r+ h0 X4 ^' i; L8 M1 e9 b: ^
to do-plots
% L& ^5 I7 n: v/ ]6 O) |. jset-current-plot "Trends-of-Local-reputation"
% j  `" ?( ^+ I6 e4 \' A6 g5 Jset-current-plot-pen "Honest service"  Q. |& M8 y0 ^/ I  N
end5 \' v3 a. ?5 z4 f
( L5 i& d+ N* Q
[ 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 {4 o3 o9 B( c' `/ W

7 B1 [0 Z; o4 J0 {! I& ^3 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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