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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:( G0 u. Y# d- q5 @! e" C% \
to do-business
" t; L+ m3 O  s- d2 v  Z2 y rt random 3607 N. X. w6 q( s* u0 l9 g; g
fd 1
4 v1 m+ j! `: D ifelse(other turtles-here != nobody)[1 m' O& l( ~# v  F; c- g. e# q7 u
   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.& I& S, o: m4 Z. L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 Z# O) @1 ]8 @* L) S& U6 A# N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ m6 w2 e! A+ x5 N& {; C   set [trade-record-one-len] of self length [trade-record-one] of self9 |" q$ ?, t. R* a" p# X
   set trade-record-current( list (timer) (random money-upper-limit))
0 |0 [% P5 o- g6 Q1 Q6 h: I: Y7 `
- T5 [8 m/ N  Q4 U7 Q* k4 h% \2 {问题的提示如下:  p, ~6 d& j3 P: _. _

4 m: B: ~6 |! g" `% D4 uerror while turtle 50 running OF in procedure DO-BUSINESS! D  U& b' {3 _0 \6 J! l6 K
  called by procedure GO- t; R2 w9 B9 M7 R* f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) k' S, M! C# l: ?( q# U( p5 X$ @
(halted running of go)1 R8 f: V: g8 ?# k( i

* A+ N* F- D% M& T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~~, Q+ M' k6 W( `$ s2 @$ M
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8 l- P% Z. D* @- f8 w
globals[
0 U% Q0 ?9 A: X; j) ixmax% `$ b+ @0 c" Q  |' w' Y0 c
ymax
( h  o4 l( N% S1 S, u7 l7 Iglobal-reputation-list* t  e0 W/ A/ @! K
/ g% f8 t; P" R4 b2 a
;;
每一个turtle的全局声誉都存在此LIST
* K+ i% p4 K8 N5 M% z1 y2 ]credibility-list* Y8 o4 e% v' V( x/ a
;;
每一个turtle的评价可信度1 A/ w( s6 ^: R
honest-service
  K$ ?. c6 ?) N7 aunhonest-service% {7 T8 P2 D% d
oscillation
% T# J' f0 r5 r8 J0 D3 J/ Erand-dynamic5 Z5 ]& ~2 [0 U/ U3 A* M$ S+ o
]
# H6 ~+ _; P" @, T9 N2 h- [, _2 K, h8 {( \4 U; X% k' f# M
turtles-own[) `; s" A9 D& C7 n% h
trade-record-all
/ J: l& D  ]% a7 M$ c, X;;a list of lists,
trade-record-one组成8 Z2 S  t! O  S% q: v# @# a
trade-record-one4 A/ T2 R7 t/ N3 C6 f$ z$ ?7 f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# L+ O' O' E( o5 M/ l) I  B
! g8 O; X) S8 t* k) F
;;[
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]]/ a; }$ N( k+ O' x  ]  f* s
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]6 k8 u9 P% m  k2 Q1 r
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
/ _- h5 }7 ?7 {& t5 Gneighbor-total
( r- Y  t, F0 s: I;;
记录该turtle的邻居节点的数目
. \) h7 V3 n# N! Z0 t; n6 htrade-time) r+ n: V! }' T1 E1 D" x  v
;;
当前发生交易的turtle的交易时间, d4 c' u2 W+ v0 X
appraise-give
% n  Q: n! ~; l. B5 {;;
当前发生交易时给出的评价8 b! W* t) D- B! ?
appraise-receive0 w4 e! [+ `, N/ u
;;
当前发生交易时收到的评价; D4 C! b; ]! B& c. x
appraise-time
5 Y% d! z- t3 L( c# ^;;
当前发生交易时的评价时间
, `$ J8 Z1 K- u7 _+ F7 flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
  L8 V4 Q) J+ a; g: E% D: d1 utrade-times-total% I1 W" m* S; K
;;
与当前turtle的交易总次数# c# @' X! q( _3 W# H, _
trade-money-total9 l7 r8 b2 y) q
;;
与当前turtle的交易总金额
" N) X3 O/ y, K; ^2 B6 v5 Alocal-reputation
" f" b! Y0 Y5 tglobal-reputation" _9 p( E* h2 }& f
credibility
) M* B7 a: x, s" x5 @8 ];;
评价可信度,每次交易后都需要更新
/ p$ l8 x" [( D  A' V: L" b$ `credibility-all* P6 W" o/ H" z8 v
;;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
" @$ H5 ]' T: t: E( D* C9 k- P7 M4 b, g9 i7 c: ^8 O- g! {- V
;;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
3 x6 o8 j+ H% scredibility-one
7 W, O% B$ O2 }+ U3 [. i# |;;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people0 w; \( F/ W- }8 O: I, w; S) V+ k' X
global-proportion
2 P* o3 B( n1 d  {2 }customer
+ I) y- s( @. Bcustomer-no8 P1 r- s% L! s8 y
trust-ok+ x+ v6 t' V( Z; B( u4 k8 @
trade-record-one-len;;trade-record-one的长度- _) `$ Y# c8 f3 r
]
& H- o5 z! U9 M1 l" @& q% K+ Y- s( f! C; e
;;setup procedure
1 K: X1 j7 C! U6 k
3 A3 s  b0 G* M4 @' |to setup
+ S: Z" h/ T8 s* F! q
& R. v% U( f  }, [ca
0 S8 N! N& \: t- g/ ?9 g; W+ R! k* e8 W6 u
7 B9 h" @+ i/ E( o5 g1 P
initialize-settings

6 l; ?- F  l; ]9 u5 Z+ s" P6 W! N2 z1 P9 I' G
crt people [setup-turtles]
5 [7 X: @6 X  q# e; ^
+ k  S: c3 b3 ~6 u& @& p0 d; H
reset-timer
7 P0 T  j1 ?9 r7 C
$ P1 t# ]1 N4 x1 G! [8 l1 e4 y
poll-class
) b  @9 i2 {" G( j7 ~  P0 r4 k. U

5 Q; I) P- n- F6 E' bsetup-plots
$ g7 w0 P2 X+ M4 s( h- J+ X# U3 {

7 \1 a4 c: E8 ?! [7 xdo-plots

% ~# m. x( k8 n  o! y; O4 U  a% Jend7 Y9 R; _: m( B/ T7 N/ t, B$ h

7 O/ ?  P  H% u+ Y, \1 w6 Kto initialize-settings
: R  w# T& S3 c& w( r
) @) n: J! Z3 J# K  w) J1 e7 Xset global-reputation-list []

2 X( D. F" ]& h* ]* `# L- y. Q& g: l
6 ^( h9 R- A% f2 \set credibility-list n-values people [0.5]

! L- S4 n' d2 `7 j7 w+ i
4 Y% ?( {' B2 \$ u3 k6 V2 cset honest-service 0
3 x* W5 F/ y0 I; l

* [4 d+ o% @+ Yset unhonest-service 0

3 E1 V' u$ t) ^: i& C
: c# Z* f- O( I2 ?set oscillation 0
* s7 |* D: S$ g! j6 o

& x' S2 l+ L7 ]& zset rand-dynamic 0

9 f' E0 C) U0 F. e9 _: rend
& Q9 @5 [9 X9 i& ?2 b/ f# i; a+ E  m  B- d
to setup-turtles : j% Z0 H3 k+ z  ~5 Z6 X6 i" n
set shape "person"
" |6 h# L$ E% V; zsetxy random-xcor random-ycor" w% }) C& p/ L- Z- e
set trade-record-one []6 X9 W& W- ^' c+ w; ~% j6 c1 C
2 D/ s& n3 O8 f9 ^3 j0 U
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 Y5 E/ M, w! J, R! |; t
4 m9 F. e5 V. ^6 A0 x, c+ I
set trade-record-current []3 @( \0 }9 Z/ i9 k9 t6 u0 L# q4 u
set credibility-receive []
" r: P( t6 Q, M. y" U* G$ H# p4 T. u2 nset local-reputation 0.5
/ _2 Q- y+ o$ z' k1 {- Yset neighbor-total 0. W5 \3 z. D9 u1 l& A
set trade-times-total 0
$ M- a3 c7 [, sset trade-money-total 0
( o' J+ e) }" q" k3 z8 T6 t3 ]set customer nobody3 d" D: @! {. z) Q+ j
set credibility-all n-values people [creat-credibility]* E; x, x4 X+ _: H+ P& {& g
set credibility n-values people [-1], Q3 n6 Z/ e- e: Q: p
get-color& X6 G: p" Q4 ]% e
6 {* l8 a' h0 ?% m* }" m
end; }% T, Q. w$ f( {( y% C

% ^4 P! m1 W4 N& e/ |to-report creat-credibility- I( l, u& ?4 o1 ^
report n-values people [0.5]: t5 n# E$ O8 k; P1 P* j7 c
end3 R  U, `& A  q

# h& P" \. Y) _8 vto setup-plots
1 N3 L- _- z9 X5 a5 h4 o4 ^6 t0 B) g* T- C
set xmax 30

- u* U3 T* _0 x; @5 \* R1 |$ H+ _9 `: s6 t; M+ b+ T% E
set ymax 1.0

1 a+ j0 N. a- M/ V" k
# X+ b7 Q6 D) i% p- Yclear-all-plots
8 ^7 m: ?+ E# I% p1 Z$ S8 K
" [" _9 J/ @! R5 v) H0 p3 a
setup-plot1
2 `/ a) z3 Z7 C4 A$ {5 |/ I

$ K  R# T, O- v- a6 \- [9 psetup-plot2

) s8 A$ {" h( @  V5 P# i5 b  P! G1 B0 D+ u6 N! p) q3 |( _
setup-plot3
0 k7 @1 g# |( Q) _+ `' y
end
  w" L. \+ \! t2 w
0 t/ Y0 q2 U, R;;run time procedures
% u' `! t) e2 n+ ]  W1 s. u5 X+ P) j2 D2 D4 f0 U# ^, g- _' C
to go+ C% P% v9 S4 `
9 w4 t2 @& P" \6 s% g) X8 A
ask turtles [do-business]

8 y. k/ `# S' Y' {end; B4 b4 @  r. Y; o+ y

. K9 C$ b/ C- @* j9 H0 U8 v; g: Ato do-business
* `2 j4 v. J( C! O
, u. i* N. z7 B0 m! `- K. s
1 K4 {- g% I, ^
rt random 360
  Z& X! v, p0 u8 c0 I& r/ }

2 J" t+ Z) x. L5 Dfd 1

6 f: |5 K+ b( ^1 S4 I+ \' y$ i+ p* P9 @# X) r
ifelse(other turtles-here != nobody)[

/ S1 `! u0 H% C1 X) W( h2 [
9 b  o0 A% G& L8 g0 v9 O0 wset customer one-of other turtles-here

7 h$ n  `/ j5 ^/ Y8 V- c; d0 b( k4 Q* y( N) V
;; set [customer] of customer myself

, }9 S* O% i8 D6 [. d- u! w+ ^8 K
set [trade-record-one] of self item (([who] of customer) - 1)
& i% w; j9 u- R; E- d. O( o/ |" W[trade-record-all]of self$ k! W4 c6 U! ^
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! ]! ^! \, F7 P) N

( C5 |# _9 j# n  r( S, Aset [trade-record-one] of customer item (([who] of self) - 1); t" b: ?. a* ^" u4 P  B. U
[trade-record-all]of customer

. i. D* C+ P7 m: }8 t2 p
& Y2 j$ b0 T3 |1 o1 iset [trade-record-one-len] of self length [trade-record-one] of self

4 J$ _" N! K6 k6 X6 u/ A0 G! j
( Z( S* N5 T6 e( lset trade-record-current( list (timer) (random money-upper-limit))
. a  P: W4 d$ ?- g
3 \6 j+ ]# J$ X! p+ o  o* m
ask self [do-trust]+ B' n; @( c5 z( w' J! ?
;;
先求ij的信任度
3 O5 G/ }7 c) H; O5 S* X  J& ]9 w9 _, N) n3 ^' _
if ([trust-ok] of self)$ g1 W" [0 w. v; i  ~
;;
根据ij的信任度来决定是否与j进行交易[
' m, s1 o2 v, f' lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' @+ p' L7 A- l3 ^* k  Z3 s6 O$ N5 V" ?
" i4 y: @- k' q/ W, @: M2 j
[

2 q, j/ k  C+ Q* w8 u# D5 n% W7 U( |6 E) Q* W
do-trade

# a+ x' _" k/ m0 y- w0 D5 z9 F8 n% B$ o! e9 L
update-credibility-ijl
1 ^* E1 U. \1 p9 b

4 e; c, L5 U; W0 Eupdate-credibility-list
3 m5 j, g# F- p# J9 o; {
+ [3 e3 |: H  C7 r3 K
& P+ O* E1 y) A, _7 \: ^! T: V
update-global-reputation-list

2 G. m" m, i* R- `" s/ Y4 j% F5 w2 z' B- [' |  Y
poll-class
) D; i# O4 _0 o; ~0 g3 \7 `
# G& }0 |7 K- C" Y' L
get-color

% F7 c# c" m& |  i- ]: _- _' `* I6 G- \7 L8 t
]]3 x* M# ]7 I) \1 A. _: v8 J/ ^, `

* X# ]  e/ l6 u7 ^: E8 z' w; \/ \* J, F;;
如果所得的信任度满足条件,则进行交易
& H- R! Q5 I' s4 m
, x5 N3 ~& c. ^5 j4 T& j, H[

& {+ s3 i  b2 \" Q
  |" Q: c5 c: y: \6 Prt random 360
$ O$ x  R2 g# T3 @
; M2 k. K; c/ V  p! t. y. s
fd 1

1 m5 N% m8 L& z/ J4 l* U( @( v1 v( Q7 ]% t5 U! h# Q
]

8 b& f8 }0 {9 o& Y5 t5 K2 K. H5 i/ O0 P$ ]& o' E# b' s
end

& c, F! ?% k9 b4 ]; Q1 f5 ^' w+ P8 Z/ t
to do-trust ; v/ r3 f9 Y  [3 ~, O# y; f$ d. b
set trust-ok False
" P4 |4 p9 \8 u# L, o
! [! O2 x$ h# N8 U
  w; w9 m, e/ W3 B& ~) J7 t6 w
let max-trade-times 0
+ P( E# f* C; C+ e+ n, rforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) {( K% t  ^. B
let max-trade-money 0$ i2 l  e  e& w% U0 L6 S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  v% D6 N* _$ d0 D2 l$ D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 Q5 E* ^( B# L+ r1 n8 w, }' Q2 s& r. h4 s  K

" v3 w) n/ o- Z! Nget-global-proportion
) A- ~9 t& F4 G! k) S, ~+ }let trust-value
; A& |, W# Q* Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  X: j( ?3 c. Q0 _# v: h( O; F; dif(trust-value > trade-trust-value): C; Q8 y' l( [1 H" Q: V
[set trust-ok true]
( a& H0 H! n4 E, D" Y2 H8 _% I: bend
& H/ L* R6 k# R& k: ^) j
  ~- P0 E  r2 S/ [0 M" Nto get-global-proportion
7 z! r7 h; M, t0 C* _. lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% N& l! S8 M% y  U
[set global-proportion 0]
8 J$ v1 y. |' F+ x$ c[let i 0% R' g; Y. r+ Z
let sum-money 0
4 x* S) P2 B# L7 G3 ]' Ywhile[ i < people]# w6 C, U7 H: e9 L! U. P
[$ Q: l1 O5 m! Z, u0 m/ U
if( length (item i) D6 @; T: Z3 J5 B8 y( [
[trade-record-all] of customer) > 3 )
' J0 ^2 `# g5 R3 P# ^
[
/ ]& C+ s( }6 Y: Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" g8 Q" R7 ]2 ~  `& S
]
/ ]1 t* Z3 c' j! V' `8 E0 ?]/ e' A/ ?; {  X% F5 z6 o
let j 0
( i! F$ _" ^+ Z9 I7 Q1 Z! g2 mlet note 0
: g* d% k4 t; q+ ]$ d* W( [while[ j < people]6 o% p1 d- r% K
[$ i3 [* T" V; C* U# p4 w
if( length (item i
2 ~9 y# x6 n! W* g, ]  e% G- K' q[trade-record-all] of customer) > 3 )

$ L3 z/ ]3 I* a+ O. z3 J[
/ T* Q. k$ w+ b0 pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" f. h; G  t! a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; S7 D% j5 T( v) \9 V% i- N
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# ?* e# P  [$ Z- {$ `
]
7 d7 l; \7 F2 T/ B) b( J( c. l. g( A]
9 \; ~7 [& n% G$ ?set global-proportion note
- M- J" X* ^' `: O]* \3 D: w4 z- {
end
: b+ c( [' V9 h; R9 x* @+ X# d% ~. _; D7 z
to do-trade# B$ t5 {0 F9 }
;;
这个过程实际上是给双方作出评价的过程
  {  R; b' ^, A7 Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: F( e/ `- A- `# g+ I3 F3 G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  {: W4 s) W! N- L
set trade-record-current lput(timer) trade-record-current
4 Z7 m* @3 Y7 t/ d9 T" ];;
评价时间
) T3 n# L$ Z) C# Nask myself [$ V3 I; o( X  l
update-local-reputation6 c+ T& N7 X, v$ x" l3 l: Q/ z) V
set trade-record-current lput([local-reputation] of myself) trade-record-current9 A" z) n, ^$ V( P& y! c* e, g
]
' E& [/ h4 K. @, Q' ]4 [2 [' I' Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 h% B( m' \, a) |: R: y
;;
将此次交易的记录加入到trade-record-one% H2 v/ w& F/ I& m2 C' |/ v0 J8 X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) K; }, a) H/ `  j: J8 nlet note (item 2 trade-record-current )6 s( w, F- C2 m4 I, P
set trade-record-current9 p; \, N0 U: K+ M* ^3 d& t
(replace-item 2 trade-record-current (item 3 trade-record-current))

: D. ?8 p3 y$ @6 A3 E* Mset trade-record-current9 M6 m% g+ N0 m
(replace-item 3 trade-record-current note)0 Y# T8 ?( {. o* v; t2 D
& Z2 s' p8 X7 ?+ e7 Y6 Z' P7 i
) {/ y1 s2 W5 s7 X8 D% d- N
ask customer [* J4 b9 v0 ?" v
update-local-reputation; S3 C, J6 m2 i1 X! {* s3 F( H
set trade-record-current
, o% Z8 F7 H. _' H2 ]9 s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) e7 W: _6 o6 _, Q
]
- X+ _9 Z5 B. i+ o) [6 Y
& [2 ^" n5 o' H% N5 s3 P( ?; d% ~6 I

( p6 ?6 {# @) n0 }7 Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: r" S! f1 ^; d) l! e, `8 v9 }
8 I3 t$ t2 @8 Q; |% L  B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% B8 p! y; U) h( V: {+ H;;
将此次交易的记录加入到customertrade-record-all2 _1 v/ c- q+ i5 a" r, s
end
" P. y5 x6 {2 y% ]6 m# y
4 S* u. h% ?  [! W& {9 k7 rto update-local-reputation
, G# `, ?" D, ?3 v9 Y+ x) _set [trade-record-one-len] of myself length [trade-record-one] of myself
0 m7 S2 D8 R1 \: T4 h* N6 R" n% L  i" C; }
- z& C8 j; C% ^; T& e- \& n
;;if [trade-record-one-len] of myself > 3
% {+ v- w2 B: u# r, L6 i
update-neighbor-total
% r' ^" c& `# A9 o8 a;;
更新邻居节点的数目,在此进行! L5 e; s/ H/ m! W8 l
let i 3. J, j3 X# G  v3 \7 A; `
let sum-time 0
* C, z( ?2 f! ?  U) D8 ywhile[i < [trade-record-one-len] of myself]' y* @$ s) l! `7 {( A
[
: \7 C6 u- E. Z0 m; A0 ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). `3 {% i/ w0 t4 X
set i
8 [' p8 g* s; m3 y  a. M, m" J( i + 1)

5 Q9 j0 Y* J. ~% V( V; G! X2 Y]
7 j5 Y0 y$ `: g& _- klet j 32 B, \# Y  M5 @3 j) v! e' S
let sum-money 03 r5 c+ b# V- x- \$ w8 G6 `# s
while[j < [trade-record-one-len] of myself]: F" |# O$ L$ p0 a; V+ p
[* \0 R4 `' S; J4 \- D% 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)
% f# P# k7 |5 U5 i3 Q6 \5 Xset j& K/ r' ~& F9 O# n
( j + 1)
9 o( A- h3 R' I: H  w( j& N
]* G7 s* [; G7 u9 `( d& l
let k 38 d4 T6 ^  U  f6 ]0 z+ N6 {3 `
let power 0
1 x( w. h% u6 [- V) d0 klet local 0* u, j/ U; C& K$ e% o" q2 d
while [k <[trade-record-one-len] of myself]! i- {& T! D1 l  U; `' d
[( o2 c; S* }/ e7 H+ U; C; q7 x( M
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) 3 Q% {# ~' @# D( W% w* X6 ?6 R
set k (k + 1)
& G0 N( h3 V# x0 @  B4 A+ T]
6 j4 t3 K; K! e# D; ^set [local-reputation] of myself (local)
- m0 a6 J. b! E" Y$ D# m/ `end
0 H* h, U7 `2 _: T% o9 s9 _4 A
$ s- N2 H0 z" Xto update-neighbor-total) u4 I6 J+ @7 U- U0 p
9 f+ J! L; H7 k! x! m0 p2 O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& b0 F4 ^6 x( e+ h5 @# u" P% f0 p' H. L7 ?/ F2 A6 z2 ~0 P; A6 H) S
: t$ d+ |" b) a: R$ H4 M6 D" @; R
end  @+ }+ X/ j, h8 h
6 O  N- S# V$ Y
to update-credibility-ijl
' P0 h7 U2 L% O
" }3 J. Q+ g& n7 u# k;;
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。! R1 t0 t. W0 ^( W' I  z5 k- l% C) I
let l 0
0 \  W1 E: o; v; i& G8 Lwhile[ l < people ]- O5 ~; q7 \  a. E8 w
;;
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
5 O9 Q5 l+ K/ U# ]* o) i[
) y/ ~- Q- \& blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ X! k: [2 Z; L) b' X, l7 [* \
if (trade-record-one-j-l-len > 3)* j( p. Q2 C, O1 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-one
3 H. V0 ?9 `; t' F% T, M3 {let i 3
, p" B+ s" }( Q" y( Wlet sum-time 0
% x  v' V$ K5 ^  Z/ D/ C6 C! Hwhile[i < trade-record-one-len]
$ v! N3 u: e  X; k  d[# K& d4 b" U1 u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 M& j8 ~; A' w" R, v$ P. k0 s3 J; ~set i
% x6 n8 _9 Y9 h7 H1 A6 X' r( i + 1)
  h" W3 U" b& M. @5 l3 \
]3 h. B7 p5 X2 G6 J0 V/ J
let credibility-i-j-l 0, }* p: E" D; p# l) _
;;i
评价(jjl的评价)
- f( t! U9 j3 R2 \/ Llet j 3
7 d  `/ T: Q/ C3 v' ilet k 4( I0 G% H, k6 L; @# f) T% I
while[j < trade-record-one-len]% q: ]" b- a/ \$ Y5 `
[
0 j0 r0 T0 @8 c& swhile [((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 X) h* C, f% J) s0 h, ?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)5 x# }: i2 d3 G5 O* A
set j
' M- d( |4 H: o( j + 1)
6 z: v" i  u& k$ C" x4 E, R
]
, t- Z$ Q3 I& m. K& wset [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 ))
2 V" Y4 J$ g8 E1 P2 c- q
  N$ S8 [, E. d! p  k! [& P
. \( ?$ Q& O8 a7 V* H8 P$ r: g* M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), k9 {/ Y+ t. |2 `
;;
及时更新il的评价质量的评价
2 T3 E5 v& S5 `0 q4 ^+ Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 b) {) r3 u/ x' e
set l (l + 1)
* [; k% }4 ^6 D]# o' \& L8 E& A& j6 v9 y
end
9 _# Y$ c( x7 v- j+ N, C
  _, N( q; r& `* ?to update-credibility-list
& f. D& S* ~( Rlet i 0
/ t8 ]3 h' ]9 I: E$ Z$ e+ ^+ uwhile[i < people]
/ X3 \8 a% ]! |& J[3 I8 [" L" s) L" W: \3 V
let j 0
1 n4 c- M8 y1 W% glet note 0
1 n5 I" G% W2 ]let k 0
1 n, ^! E0 x* F1 I( O;;
计作出过评价的邻居节点的数目
7 H) M8 Y* W4 w; Ewhile[j < people]9 @& C) o0 @( `! D: m! v
[
6 t" p. e" f- Q8 {. sif (item j( [credibility] of turtle (i + 1)) != -1)9 g& C9 e. c% `
;;
判断是否给本turtle的评价质量做出过评价的节点' G+ }# y$ H$ D. q5 D9 y& ?
[set note (note + item j ([credibility]of turtle (i + 1)))
1 r2 V. s9 u8 ~' g* k$ g5 k;;*(exp (-(people - 2)))/(people - 2))]
% l8 o, r3 l4 X8 x
set k (k + 1)" q: j7 @2 g' {! \. e
]3 r! Y2 L4 D. P2 P  G# I$ C. g( Y/ y
set j (j + 1)
  B4 ^# S0 D3 h9 \: q$ E8 p. ]]4 `: `$ V% }/ K2 V
set note (note *(exp (- (1 / k)))/ k)
0 j+ j/ {6 z5 n5 q: Yset credibility-list (replace-item i credibility-list note)
4 t( v" Q: k1 |1 u8 _set i (i + 1)5 b2 J9 n; y+ H
]! {$ w1 K- `% D: e# N4 q9 n
end8 Y; q% u& |1 q4 b

/ [" [5 ?+ d: f& Dto update-global-reputation-list
! I6 X5 m4 m1 r& u  g+ ulet j 0: ~9 D! Y% }: Q' Z" R: F
while[j < people]
' P( i$ X# A! [2 ^& Q+ m[
, a) f7 g5 a; ~- H/ h7 Tlet new 09 K: y0 J  m" b. C6 E
;;
暂存新的一个全局声誉8 m4 C. ?  u; K" ~0 s
let i 04 w' S, m% Z; E% n( C. u. i
let sum-money 04 F; C1 v! b9 v6 |0 k
let credibility-money 0# e- G$ G( Q; I( s8 \
while [i < people]- @2 m: p4 [, X; J, o& c$ G
[
' ]# V' ~: u# A. ~: D6 jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 g/ r$ t5 g( f# X' Wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: Q0 T, _$ }0 z$ T' \1 p4 Hset i (i + 1)
" G/ x# ~/ r3 K]4 S' a" u7 i+ _
let k 0/ T: E4 t+ y' [+ \* O
let new1 0
& S9 e- H% _; h/ \  O9 uwhile [k < people]& h4 K/ q: r/ O: ?. F
[
3 Q- h) o  w- ]+ t; \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)
3 u8 [( Y+ d" W3 |7 ]. Eset k (k + 1)
) c; `" @1 W& F2 `5 c4 p' f8 E]
& [, |" n2 ]. E* k6 {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 [6 S7 }. m5 i( {: d' k2 aset global-reputation-list (replace-item j global-reputation-list new)# z& J4 m3 e+ F) F, Z+ ]
set j (j + 1)$ @$ V4 d" a% k" K( B
]8 N+ t- \5 J' v1 Z' m1 i9 Y5 u
end" N, d. J1 |; S! e' h
; U2 S' V( H0 P" i; ]
- y/ }) k! y2 l2 {8 F
- Z+ B# c& L2 O4 t! `
to get-color
- @; `& m* K- Y) E; ?! L, ^7 e9 I3 a
set color blue
  i9 K0 K+ E8 q6 ^9 m0 H
end* [5 w  c, j, X7 {

- F( z: ]0 p1 i1 I. B: j; Xto poll-class/ ~$ y% j: Y  m9 g- D
end" G. m. p  x& n

8 S( B' b8 |9 F7 ^to setup-plot1
! l4 q) E4 ?  q$ ^& \" y
1 p3 V, w2 e  E+ ~set-current-plot "Trends-of-Local-reputation"
6 m; o, n/ v8 F0 O( R9 L" }
6 k& j/ }# L% V) p+ F+ c
set-plot-x-range 0 xmax

# C+ m$ ]4 s2 G1 q% O  ]2 b% f# C( M7 P  D! l
set-plot-y-range 0.0 ymax

/ Q3 b% |0 u! ?, B* _+ M! u6 \' O  xend
. x$ i% _' V( w, d! _) ?. Y3 h! g, V
, \$ _3 Q! N# ^" a, Tto setup-plot2
0 g* V7 ]  c$ F+ I0 ?! p6 P0 E3 b: r6 s" \% p0 }
set-current-plot "Trends-of-global-reputation"
8 U. F) ]1 Y! L: f6 {+ |

% P# L8 B. F2 R2 W+ m! H( s% Hset-plot-x-range 0 xmax

; r8 U# r" \' ^. i4 {
. A- G) m# w: D4 K2 s" @' ~set-plot-y-range 0.0 ymax
1 ^: R- S; F9 S1 i$ ?
end
" E6 v7 c$ v4 }  q  A) `* k+ ?4 j- R- {" i* c3 v- c
to setup-plot3
! _; O0 M! y  m; W; E# a! R6 O( f+ U+ ^" ~. a  N' Q: ^
set-current-plot "Trends-of-credibility"
  ]) C$ F& A- ?- ~& m
% _, b+ G) E5 d8 \% R& @& H
set-plot-x-range 0 xmax

; |  x  M# [# d% Z* Z( G& Y
7 U4 z0 c6 D0 S2 n% k% a& X8 ^7 Hset-plot-y-range 0.0 ymax

$ l6 A2 g$ L3 rend
0 R. U8 s" [1 ]0 D: n/ W& Q- x
% S- b+ }, F! T" z1 S1 n# Vto do-plots
3 R; W$ e, k/ N- v3 h3 H  L' Q. ~- vset-current-plot "Trends-of-Local-reputation"2 ~" U* R' S  M% F6 l6 b; S
set-current-plot-pen "Honest service"
! C; D  E; |% h: O8 @4 Xend. e& S  ^+ \, J

5 R: I- Z, J8 |" [& }, u[ 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.
) F  G/ k4 ?( Y4 T; n
5 ?4 i. d2 d' p( l" `- O) N7 f& q& j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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