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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:) v5 d# J6 R1 l
to do-business
# h, p% ~5 f5 u% J( A rt random 360
. Q7 t( j! F  \8 t+ _# S" X" {' ~8 q fd 1
$ B' @2 m/ O6 _ ifelse(other turtles-here != nobody)[0 Y) ?  u# z# D/ 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.
+ B: l& o# ~3 @& h3 _   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      o5 k+ e: a7 {* ^4 ?% [& {2 y6 I" \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ Q1 x' w9 h' T3 \3 X   set [trade-record-one-len] of self length [trade-record-one] of self7 p- V( a& ?8 b9 r6 n8 e
   set trade-record-current( list (timer) (random money-upper-limit))
" x5 u* y) ^8 \& u5 J# ^; ]7 k5 j; K
问题的提示如下:8 R! Q* n( q/ j: I" A

8 |8 K. W# g% _3 E! {5 Serror while turtle 50 running OF in procedure DO-BUSINESS
" D7 I& X, U' A5 s$ @3 V  called by procedure GO
5 s6 W4 W5 k( w6 `; a# rOF expected input to be a turtle agentset or turtle but got NOBODY instead.
; N' b- a* Q( Y/ j% \/ l% e
(halted running of go)1 i  J, D- _$ X
2 Y; Q1 P; H8 C+ F
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~~
* a+ `, B' Z7 x  d6 ~7 o# }, g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/ ?: s/ y8 w% R- k% q0 Z, r
globals[) X( n1 n2 C7 D3 d8 P
xmax
; p1 T4 E+ `, |& Vymax
2 a# b6 E- p( C, x4 oglobal-reputation-list, _4 h% i- C, a7 Y+ I+ d. R- H- B
( X* a3 L( G$ r8 W6 \7 O+ y( h$ R
;;
每一个turtle的全局声誉都存在此LIST
& i& p! g- Z+ j4 F4 icredibility-list
* p% d* p3 X# n5 e;;
每一个turtle的评价可信度
7 y, u5 O  e1 ^& E8 K9 k/ Vhonest-service0 E( k0 s. j( p2 w+ k+ Z6 N4 g- \
unhonest-service2 @0 y( F" U: Z# u1 L
oscillation
" @9 U" P: `) S) L7 s. srand-dynamic
. K. L* v- E* O0 t' I; d0 j( X% c3 D]
' J5 m# x( _  k( w% k+ o0 t+ q- M. Y) p& F
turtles-own[  d$ I' V2 n0 `" w- x8 Y
trade-record-all
  O; D4 X6 S0 b% H4 {;;a list of lists,
trade-record-one组成
2 P# a5 G0 r' O( U/ m. d6 Y* l# ^5 Ktrade-record-one
+ }( C3 {: u3 o) }; a3 a4 @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- [# c  D/ d" {& i) S0 b$ J2 U' S1 D. V/ ]- L
;;[
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]]
$ H; z, ~; L- o& W: Q1 Ttrade-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]; T+ E$ C5 {7 Y* q
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
; U8 V4 X/ @- H$ V3 yneighbor-total' q) z) ^" x/ j7 I2 s. q
;;
记录该turtle的邻居节点的数目
+ h8 E7 _3 P# @+ Ptrade-time
. s. E  I  N: D$ D; I;;
当前发生交易的turtle的交易时间) C. f+ i2 U6 p7 r- w
appraise-give& `: x; G9 T. X
;;
当前发生交易时给出的评价, Y( U( N, a3 ?  {
appraise-receive) n8 ?; A& M# F
;;
当前发生交易时收到的评价
' S* R& B! h4 v( mappraise-time+ ]+ C/ a5 O0 y6 h+ x" f0 O7 j; i
;;
当前发生交易时的评价时间8 P: G) N5 [3 @$ g4 B
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" A7 y' h3 g* i$ y0 U1 U6 [, Ftrade-times-total
6 K3 Z& e) G) P( `;;
与当前turtle的交易总次数! O1 j1 G' r; a  ?7 P" k1 H3 Y/ o
trade-money-total
+ V* X) R! Y2 }' r' C;;
与当前turtle的交易总金额9 c0 {& w5 u- w" Y1 _+ d5 m0 B6 X
local-reputation
1 J5 }+ ^6 P' S. Z/ Mglobal-reputation
/ D8 m  j' f; |# Ncredibility
" B! o5 L, O# G8 f/ K# B1 Z;;
评价可信度,每次交易后都需要更新
/ x' s( R8 z- c1 \6 _credibility-all7 n* `% R) p5 ~1 R, ?: m6 n7 D. z
;;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- H8 I* z: z9 k0 H
1 h; U' j( k. o" `& x$ u$ E
;;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/ e5 m" {; J5 c3 a; y& i
credibility-one
( F/ e) T* v; q' p& G+ v0 ?;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
3 p- E) d5 ?1 x. F% I' ^global-proportion, y$ p# D4 l, b; U
customer1 y. _) G! D; Q" ?8 C
customer-no
4 k+ [$ t& w3 \5 _9 Z& ]trust-ok
+ b4 w2 E' C. e' W1 F0 Mtrade-record-one-len;;trade-record-one的长度' O* ]. g3 z1 T+ h8 ?7 y
]' t, p# d$ R% p: Q! {( ^
. j& z) {( C6 A7 U0 M0 v; F/ F
;;setup procedure7 l* F' A/ d; q4 `: \1 {9 M( S
( B. w( N2 N" s& Y# g
to setup2 l' y* C+ ?, p" _5 O
  s$ }# M1 h) q; L
ca
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initialize-settings

, M. \' W% H0 [0 `  ?4 k8 J7 f# f; [
# F1 ?# b% \! ^* ?, v& L( E6 L( zcrt people [setup-turtles]

# e& {9 {9 K& i7 u$ ?+ l6 R4 p: k' O6 W+ ~1 H0 Y
reset-timer
8 _2 v6 j% N" W9 m7 r7 F
, X) P" ~% s3 {# ]0 f
poll-class

7 r: D# a" ~+ S# g% N4 b. @1 J! _- U, h& J. @. B% x4 O+ y, o* E
setup-plots

7 s) B* L1 g8 O& G. X0 z' A
7 `3 S( c1 O9 S7 B9 C, qdo-plots

) }7 @; ^/ y  C$ ^* Fend0 f7 s, X# h* n- X
# D: l$ {; q; E* n# E
to initialize-settings" t3 U, p+ j7 U$ Q, e9 P$ C

4 ~  O$ ?  j+ _  oset global-reputation-list []
4 k) A. p8 s- z/ o0 u
: v; J  ^% ^" ?3 R5 ~8 w
set credibility-list n-values people [0.5]

0 F! r9 R; h( g/ J
2 s% _2 m& [, N! j  O. Eset honest-service 0

5 _5 i4 U- C4 w3 A" d( m* r! H
set unhonest-service 0
& z. Y' m1 d  X

4 U2 M2 M" v$ f0 |2 e* xset oscillation 0

" m% u+ T; y/ R  R( _$ X, s. X7 p3 ], h% G# D. s, W& D
set rand-dynamic 0
. v6 Q& j5 W) x! s
end
( h' n8 |$ s& s, O5 s3 N
& r# v2 k% l, Bto setup-turtles 3 N; S) I+ r9 c
set shape "person"# h+ p$ O/ [3 g0 k
setxy random-xcor random-ycor8 t: o- S; o" d. P
set trade-record-one []
2 O- y% r6 Y: i: l& c& \8 k- g
% h. t9 S: I/ J( v) r  {0 R
set trade-record-all n-values people [(list (? + 1) 0 0)] * ~. L/ T% @0 w" P& @) Y& w6 R& t
  z7 D1 i  K; T" w- U" A9 X
set trade-record-current []
8 b& v! j$ J) S. G  i& }2 jset credibility-receive []9 x- z% ?6 y6 u# A+ V% y: X
set local-reputation 0.51 s4 [4 J, y3 ~1 e
set neighbor-total 00 o9 c. s% l4 V
set trade-times-total 0
% a4 F, B, t* w$ \/ Fset trade-money-total 02 r, X7 R+ H' w% U4 l4 @9 @0 e6 e3 O
set customer nobody1 U: l7 k' _7 M% y/ Z4 F/ W3 V
set credibility-all n-values people [creat-credibility]
# U4 x0 u2 |" q% P) |7 ~9 x9 i# eset credibility n-values people [-1]
/ E! h: R  _1 r* i6 wget-color$ e$ {$ @/ B  q: ]

7 G6 H& L* M9 o4 B0 Lend$ u2 f. Z+ \  S+ |- H+ t
7 Y8 c0 y; v. c+ @* b# b! x* Y
to-report creat-credibility
# g5 p5 W' m" `report n-values people [0.5]! ^( M- Y, `1 H3 C, p% F
end* ^6 p! x3 K, ~- M- M+ t+ F
, m$ ]) u. @6 z$ f4 \
to setup-plots: `3 F: @4 A7 C4 w/ X

! Y) s  x4 X0 Z) [2 J. b1 h- N" qset xmax 30

3 q2 V0 i) ^  {+ n( W
4 D0 b) o8 o1 D( [2 S/ S' f4 ?* ^set ymax 1.0

& s' |' ?3 N% n( n: q- J) C  f5 R) ?: W- o3 P/ ?
clear-all-plots
8 r, v! l+ I- j+ M  ]3 I1 K9 g# \
4 T3 c+ v5 l6 D) Y2 b+ _& z
setup-plot1
8 {% Z- H* r  w: O' h+ X/ O
3 g4 o) B  i& T# D/ E
setup-plot2

0 V. F/ E( G* r/ g. f3 x
* W6 n/ w3 ^9 v4 t% i1 l1 o) [setup-plot3

" M: O% B! X6 ~8 f7 ]end
7 n7 R/ U, A4 E$ Z6 ?3 K. L
& t2 t0 @# S) s/ ];;run time procedures% L3 J4 C7 O0 V( c7 T

5 N" N8 _- y) j- {& L9 zto go$ ~9 M" [) A8 Z- N/ k2 f

/ R/ q! A' @7 n5 `3 r4 s/ h  c9 Oask turtles [do-business]
8 A9 O: L  w% i: o
end1 E  \7 m* J$ L( p: x0 j) ^5 `* b- o* C
9 D! _, I: y- j* E. q% e7 I
to do-business
4 {( s& B8 j' w: x* y

# A* s/ C  C: J, v4 S5 r" Y  D' @5 s2 c5 G% l
rt random 360
8 I) [; h' r4 ~$ g5 d& q
4 _! |' Z5 \; M, z+ o: g
fd 1

$ r0 ]  w8 S. R+ B2 A1 k$ B: P4 f! _/ {& |$ b+ @4 z
ifelse(other turtles-here != nobody)[

% f/ k, m! X+ P& Q: ?
/ D, b6 X: J' G3 |& V& R2 uset customer one-of other turtles-here

2 d, t! M! `2 [" i  R& s" d+ ?2 u+ }3 `! R1 ^, Y
;; set [customer] of customer myself
$ M; N# J9 x: _" U% _2 q, q

6 w! u& `" l+ d/ Qset [trade-record-one] of self item (([who] of customer) - 1)
  W6 R1 p/ ], j4 J- V# K5 g9 N[trade-record-all]of self
: P3 g; S( v! q1 c) W;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( b1 k8 @" i6 u! U8 ?( _  R8 J# o
, g/ S% o$ C6 V, N
set [trade-record-one] of customer item (([who] of self) - 1)
- ~. ]1 m/ u- U' ]( D[trade-record-all]of customer
9 ^9 B* L" ]$ G+ M$ E

  }9 P. w  y. P! l9 Xset [trade-record-one-len] of self length [trade-record-one] of self

9 h7 ^4 K6 i. w1 L( h1 j/ {0 ^- z' u2 L! ^  E& [. R2 g+ ~/ s
set trade-record-current( list (timer) (random money-upper-limit))

9 `; f0 L! I  [/ v) b* n
) B% w0 ]7 W2 |, e! n6 u( F$ r, Nask self [do-trust]
2 o$ P) D7 W- u0 e;;
先求ij的信任度" C- {+ Z8 W4 G( }1 H, z2 _

- ?! q, ~4 U: P" {1 v: s% J: dif ([trust-ok] of self)' i" T; `2 M' L# U8 f2 `3 J
;;
根据ij的信任度来决定是否与j进行交易[
+ ]; t+ a" I, I  l3 dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: c; b; U/ h0 {

9 d* p/ t+ c( x& S5 `) K[

2 B& I3 ]! k$ B1 l. @; q% V* q: f7 }: v! U/ z3 W9 U
do-trade
0 L5 Q' k7 w: E. E, Z5 A7 ]

) ?, F9 W& x2 Tupdate-credibility-ijl
' w1 l. `4 e" K. J1 a
! j# v4 e" ]2 c1 W8 Z. H
update-credibility-list
2 H: v! V9 S! r" Q4 F* R
1 b' i% i9 R; ]

; _* R9 ?) t+ o" {3 ^4 z2 bupdate-global-reputation-list
3 W5 ]+ J+ N" E; B
2 ?0 i+ d/ Y0 b5 L9 z/ T
poll-class

2 y4 j. T4 X. a% `$ n. S: H
: X& S! J2 |6 ?! P6 `  oget-color
$ i. ^$ l0 O: S2 k+ G: k

# ]/ g3 X& U1 D7 j4 Z: D( s]]
3 B& C1 {6 w) `5 Q9 N  c$ u: |) Z2 Z8 [0 U& C# ~/ a
;;
如果所得的信任度满足条件,则进行交易( @! o- U- r# G: Q  [  Z

# a% G$ I- T3 L9 G0 V; T; G6 I9 G[
1 B% T' ]# R" Y! z  b) H" W4 ^% m
: P& s- ?9 ^& Z; {6 v2 |
rt random 360

# ^4 z0 o4 W# M1 ?0 c! R6 t' Z/ B
, q, C4 l+ V, }' k# r, sfd 1
4 x2 g! {) ~$ n1 U
9 H; {: b, {6 r5 J! a. P5 D
]
/ s( Y+ M6 V4 M! p. v) b7 F* o+ C
) @( |" I9 I: R7 F+ _
end
* \, T2 [9 \, S. e3 ]+ N# v, ^, Z
( Y5 V- a4 _$ |7 d6 G2 y# R
to do-trust 7 N7 `0 n& ^7 _% F* _5 _& K7 r
set trust-ok False
- h& Y# M. C$ p
  L0 V. ]: Q- N* z; D2 W
1 S& m+ [+ Y! l& ~4 R  f
let max-trade-times 0  _/ Q, I" O% ]- z" R2 x  D' W
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 y7 w( F1 k4 E  J: F$ v8 ?let max-trade-money 0
$ N' t  d' _6 \( P* Qforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" r5 m- b1 n$ |. tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ t4 b% n5 f# K" S
/ w8 n7 T+ ~+ Q2 ~/ c9 R$ B' Z
1 q) J, d' g( k5 |, _; s
get-global-proportion$ E0 `; o2 w/ f
let trust-value
/ {- D" A, P  |! \% slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
9 X$ F: e# I/ e0 H" U# W- V! O. N
if(trust-value > trade-trust-value)% d2 [& V. A5 m* g
[set trust-ok true], W$ x% ~* g( {9 Y
end
' k$ _" ^" n8 d! a$ j1 g. o
# p# i* P) x7 |2 g8 i7 Ito get-global-proportion
! f& o5 \+ S) A+ x, bifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. u/ {! g# U7 F7 ?8 ~5 j. \0 z- g[set global-proportion 0]2 X/ j( v+ \0 b2 P5 m- L
[let i 0
1 F2 h, N$ k+ o2 jlet sum-money 0
- Z- f$ i: e5 |while[ i < people]
# x  y' d# G: J; E2 c[6 k: U6 N4 d) M  d5 Q% v% w/ f, g
if( length (item i
8 L% p$ e- P4 b- h5 H3 a8 u[trade-record-all] of customer) > 3 )

4 @& _! e. m, P[
% B, H. E0 _8 r0 @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ R# f6 r: D0 K$ \" _- N
]8 r$ _. z8 N: C- P/ A
]
6 C! m- ]7 L6 n! ?. U( slet j 00 y, z  h, a2 u/ V: r- D
let note 0
" C' U! l. ~9 R7 O/ [% V5 f2 Gwhile[ j < people]- n% V+ o! A$ n
[# N: n  u/ c" q( ^8 ]/ o6 ]( L
if( length (item i
( D9 ^- \5 o) t7 p& O& u[trade-record-all] of customer) > 3 )
2 D) e/ z9 J% Q3 \9 `& _
[
/ z0 x. B# J) e' uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  d6 i$ M0 Z9 @! ?$ ~1 r[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: ]& {5 v: ^& F% g$ u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- G, ]% S6 B2 C2 P7 n4 []
2 }" d" m5 H0 [# j, n. S( \& Y]
5 ^7 W7 ?/ C& f" ?  t! _2 H" dset global-proportion note. W, E4 Q' J; ]4 u( Z8 W# o
]
) B, j  [- d7 Z, q% C$ nend) H- v  x5 Y# c7 B7 S% P/ r
9 ^' D+ A4 C8 x" {: F8 M) q
to do-trade
4 ]; _( _/ B! m( G6 P6 x9 F$ G4 H;;
这个过程实际上是给双方作出评价的过程0 F  I7 n4 e; r1 {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; d. p/ y, T) k4 `+ |2 N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ ~8 s1 v! g* v- Dset trade-record-current lput(timer) trade-record-current  m) C6 }2 s# H4 t& i  U8 u" p
;;
评价时间, Z4 c& ^. l# @* D0 O. ~. A' B
ask myself [# b0 k7 h4 }0 j! ]/ ?7 L
update-local-reputation
) M6 t+ U# O+ F# R& [1 }( O7 kset trade-record-current lput([local-reputation] of myself) trade-record-current
* K1 o# ]" \, c) e: b- @5 \]: V0 n7 L, {" |4 v' W
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, V3 ^8 M% }6 I! P4 w7 };;
将此次交易的记录加入到trade-record-one
& t1 x# M0 ?8 l. L6 p' Pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)1 {/ j1 r6 O0 w* A2 [. I# b7 F! Y8 E: z
let note (item 2 trade-record-current )& c1 f7 g) g- I3 @/ l
set trade-record-current
, L8 F$ n( k% V5 p8 [(replace-item 2 trade-record-current (item 3 trade-record-current))
0 T0 e) Q- w9 I$ [( M  J
set trade-record-current
  D9 C# P& o8 L; t8 e) F) B2 r( C: l(replace-item 3 trade-record-current note)
5 ~0 |( L6 S8 W0 ^2 g6 w( ?0 K% e7 y5 \8 v! x8 u7 `

' J0 S: u/ q9 h9 y1 k  a  yask customer [
9 Q9 F/ s$ M: I; O- `+ nupdate-local-reputation
4 X' x3 I2 c0 i6 E( j. \set trade-record-current
( u4 b7 r4 p: d  h9 f, f# v(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* @/ X$ C0 A# M! T) U]
% z- }, }+ d8 E& O" \# f4 ^% ]( B* B6 e+ k, G

! k$ U( \  c* }2 W6 Hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; \2 P% m! n3 _2 s4 L0 ]% H) _
& s; m2 Y$ a& X8 U
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), N1 Z6 s9 u4 l7 {2 F0 `, ~
;;
将此次交易的记录加入到customertrade-record-all' N; O6 W0 N0 \" ]+ W
end2 {( s; [/ W6 K2 K, q
1 Z& L. m2 Y. q: _/ g, Q) R
to update-local-reputation
" |1 l- r7 K* W+ I) @$ a+ [set [trade-record-one-len] of myself length [trade-record-one] of myself
0 }; j" L$ _. Z. o" E4 w, k, y
( j2 i4 X# F! W( D" Z
4 J) X# X: e& ]+ e' s1 n! G% U;;if [trade-record-one-len] of myself > 3

  _( X$ p! F. T4 Tupdate-neighbor-total
( t: \+ }+ U: L& _$ Z7 l' R;;
更新邻居节点的数目,在此进行
5 ^9 o2 X; Q( d6 J/ R8 }8 Klet i 3
7 R% e# C0 e9 W. _. q6 Elet sum-time 0. }9 K/ w5 k6 E( }6 M7 n
while[i < [trade-record-one-len] of myself]7 {! w$ `2 p2 \* g( S
[, Q3 Y! j0 q( X4 _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% x- A3 _+ s0 c# j: M! f8 {set i
1 R. {2 t0 x2 c8 v. G( i + 1)
/ G# {0 B: \, B+ e
]
7 {! e% k  t% l$ i: H, vlet j 3
5 R0 W. z6 K' w; d( ^: T3 c, ilet sum-money 05 Z! ^; G- V) Q0 q$ d8 t8 z
while[j < [trade-record-one-len] of myself]* N* T$ Z; W) v' o2 |; p+ [
[* n# u, X7 r4 g
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)
( O7 N9 ?" W* o% U# q" K. L! pset j
( D. @2 ^3 u7 k3 w! o; N( j + 1)
6 Y, f( j, k5 S1 N8 x" c
]* g/ a/ _1 `/ J$ R1 \
let k 32 D' {& w" g- `0 X$ |
let power 0
3 V8 }0 E$ R$ \- O" T2 Hlet local 0
  J& a9 ]# i9 P( f& ?/ ]while [k <[trade-record-one-len] of myself]. b( h* C- w! _) F8 r
[) p4 G  Q% X: ^, y6 I
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)
; M/ X* J+ {. l$ g0 U* T9 J. fset k (k + 1)
# O# K' g. H* Y* m; g]; {: w, H' @6 E
set [local-reputation] of myself (local)# u$ X# x* H- I/ @7 l
end: H9 S4 f5 L, v- o  z, x  `, {/ q
0 l; p* c2 t3 |  m: _; O  J
to update-neighbor-total7 V. u$ c: ^( \& x5 a
# Q6 v7 o1 ]* }2 `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 F8 S# h% B) `" @* ~8 `# a# }+ Q7 _3 w( h

) F5 ~$ ~" n( Oend5 U1 I1 V! J5 o$ T' {

0 Z" M& K6 s1 B3 Pto update-credibility-ijl
1 Y1 j- N2 Q, c9 ~  X, [9 I& {' B
4 O$ p3 F# Z7 P: s4 H. R! V% w+ Q; y;;
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。
  k2 \1 ^$ M+ B: o) slet l 0: t& F0 L& T4 L
while[ l < people ]
5 |+ C! L* h" f* S1 }0 M5 w& j;;
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. r9 {$ K: ^8 G' \" S! }4 B
[1 N7 f6 C* s; W0 `4 C* g4 Y* L
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 l2 U% N0 N6 G; ]7 {& b4 |
if (trade-record-one-j-l-len > 3)
+ I* N+ \9 N; S+ o" 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
1 G8 j, v. O) f5 T1 R1 W3 {/ _let i 39 |6 _$ P8 r& m1 C9 r- V+ {1 Z
let sum-time 0
  ?8 e7 g/ i% {+ d+ E& Cwhile[i < trade-record-one-len]- R/ ]6 l% z5 k% Y
[) Z! ~3 N8 }7 P1 g& [6 C
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; M+ d; b% t/ ]- Dset i
- d% j# I6 d; @2 [( i + 1)
9 P& R4 O* U4 T- a, [
]
: Z( [$ S* [% tlet credibility-i-j-l 0
& h2 l8 E3 y7 k( @0 u;;i
评价(jjl的评价)
2 o1 l5 v' k* h4 `4 K7 flet j 3: X' t9 d! D' j5 S
let k 43 Y* k+ g) |6 C/ ^
while[j < trade-record-one-len]6 ?" S% Z0 t' V2 h  g
[& z  [( p5 F7 Q, Y. _
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: f8 O9 }5 s5 m' i4 F# F: |9 n
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)! X; l) N7 S" y! c; B* }. \, J
set j( C: k5 u) N  }
( j + 1)
' e) _* B! e, R# P* H. U) \( W
]
1 X$ g# s% t( Y' Zset [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 ))7 U2 F" d* \$ N" ?

& e# l, Y8 p- n4 u5 @2 e# k0 h+ m

, A5 R2 o# r2 @2 Rlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); h3 U0 F0 [+ _5 L2 }9 B2 U
;;
及时更新il的评价质量的评价
! i/ W' C$ m  C7 a) Z, d) e" Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 j# H$ |' i. k% S7 a8 Nset l (l + 1)% E- d8 D6 [$ ^$ \
]
$ {5 i( K7 }3 a. J! Dend
8 g/ x0 z3 k: `' M6 k7 P
+ u2 l& A2 V+ @' `, k& U! Ato update-credibility-list4 p: c& {; L! w
let i 0
0 K7 g. K3 M' c! x/ Y6 I2 j# Z& ywhile[i < people]8 D- v, ?. u/ H
[4 x& g2 ^/ T! D6 B
let j 0( N6 N9 @1 y: }) d* v
let note 0
  Y' F4 s# j, ^  v+ glet k 0" F6 {/ k6 w& _: s, X6 E7 b
;;
计作出过评价的邻居节点的数目
9 Z6 N; @# X2 e8 \while[j < people]6 [* }3 T1 A5 p# o) U: a! O  J9 d
[6 ^- s, j/ o# D' m2 i8 |
if (item j( [credibility] of turtle (i + 1)) != -1)
" N( ~! }! m% G. [4 ];;
判断是否给本turtle的评价质量做出过评价的节点
1 o# N% K9 O  p' N[set note (note + item j ([credibility]of turtle (i + 1)))4 a1 M: T: h8 v1 ?/ h4 }) l3 v- O
;;*(exp (-(people - 2)))/(people - 2))]

1 }9 u& T8 h0 u2 K- u3 wset k (k + 1)/ V& T4 ^$ S9 k  l+ K
]: r; r  _( S9 \- l  @% C( L) ]. |, ]
set j (j + 1)! \6 J6 O- u- b* x0 T/ L
]
0 [6 U" L& _2 k: D  \; s% Hset note (note *(exp (- (1 / k)))/ k)
2 q5 A  _7 }) `: @- p$ X! Jset credibility-list (replace-item i credibility-list note)
: ^. h  V- t+ i9 x6 e$ \0 dset i (i + 1)
4 j7 {1 v0 \6 t0 e/ w- o0 c4 z]
4 w' y4 D6 u2 ^/ @  [end3 O3 \$ `& g. `+ [, l' ~

, F. f8 h0 T# qto update-global-reputation-list6 k0 O; i- O9 }( C; e% j
let j 05 S% ]$ V8 v2 U6 h& r
while[j < people]
7 v" y; U5 y' e+ I7 P3 {' }3 d$ z[7 R+ k) F7 T- Y' j2 h+ n
let new 0" N$ N3 M" S4 r5 P
;;
暂存新的一个全局声誉
2 Q% M6 o2 q! c, Olet i 08 @* S; V& x2 Z, e
let sum-money 0; b7 N# j9 d( l% G$ `3 Y
let credibility-money 0
( p/ a9 V( q3 V+ awhile [i < people]+ D6 p, B  A7 |
[2 {2 v$ N- X; @* t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ L- X' u) a7 ]; T/ ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% }( q, k0 y& D1 u
set i (i + 1)
1 V9 R" q, H9 s]: f0 t# W! N0 y0 [5 a# `3 c  @' g2 p
let k 0
5 t" l# b6 G7 x1 N4 c1 Clet new1 0% g3 `% d: E; y" Z2 x) Y, V
while [k < people]' `. r' a  c; j# O' E4 G6 d
[
: t! J9 |) V1 R# vset 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)
  w4 x0 g  G- v6 s' ?7 R8 ]set k (k + 1)# m" d. \  t- S% I
]
. M' w  ^% c6 [1 |- V0 cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 Q. i  T5 S" e, tset global-reputation-list (replace-item j global-reputation-list new)
- D. G' N  e7 l# oset j (j + 1)
* }5 I" w6 x6 `1 t; _]
  `5 t- j/ y/ j# C" m( c5 Cend. x8 X. `- c8 i  n2 P0 O/ a
; M' ~3 U+ u& ^; V: E# K" ^
8 _3 @6 m6 `- l  A. V( q

9 ?% a: M; I: j2 ^$ `6 P6 ]0 I  yto get-color
6 u0 s5 o( f! O9 Q; t/ H+ {' z! T0 w7 M$ P/ L) n
set color blue
) y" E4 {; b3 G; S& [+ A
end
5 Z' |# W& |/ c  J
, }$ R+ S8 L$ x0 y6 R6 k7 _) ito poll-class7 K& f7 W' V* v. t
end
/ n% I# Z5 @  t# n5 `" T
1 h6 n' c" m1 Z' _$ Ito setup-plot1! H- n2 W, L' Z0 L; H! r) X
* D# U; W. `6 K4 D9 Z
set-current-plot "Trends-of-Local-reputation"
2 x, X  q* B. c/ x& D
$ \# R" D) k" K5 I8 Q
set-plot-x-range 0 xmax
$ |: N$ i: K% f' x

. w* P4 H( Q% F: ?, {3 I$ _set-plot-y-range 0.0 ymax
/ J1 Y. P0 k% Y8 _
end; ?) f2 G5 P6 X/ `' `& a
9 a: A1 a8 \, j! _" b
to setup-plot2$ F5 i, z4 y1 z3 _1 `
, A9 u! ]1 x! }# T
set-current-plot "Trends-of-global-reputation"
4 ?% P7 j/ U; d# c% b

8 k) w* h7 t( o. E4 uset-plot-x-range 0 xmax
/ R5 \" _. _% v+ a9 y5 j

- D% h- |6 t) W# q. n& ]  aset-plot-y-range 0.0 ymax
: u5 g  c' k6 [: R
end
( I3 O- e2 B( G6 e
+ e4 K. y% W) ?) B& c7 Ito setup-plot3+ o. z8 a; v) L. i& [

/ m& R" ^2 d3 G9 v- R5 U0 ^set-current-plot "Trends-of-credibility"
- F, A$ t" M7 [
$ ^7 `) r5 a0 M$ G+ H8 j0 ?- T
set-plot-x-range 0 xmax
0 U* ^# c: s, A$ r4 @/ ^1 H  x
$ w$ s; k& l5 b
set-plot-y-range 0.0 ymax

, x0 q4 C3 f7 D! a' A$ Z1 ^end
' S9 G# \. }# r% L' ]$ k
% |# ?7 j6 \* h0 Jto do-plots
' i& J. t; j' B0 `, l# \2 oset-current-plot "Trends-of-Local-reputation"" R. ~, f) \+ T! R1 G
set-current-plot-pen "Honest service"
( ]0 W$ i! }- h6 ]' [) ?8 Hend
7 t+ l7 i2 O0 R( M2 G
% q( k' s  Z) z2 T[ 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.
0 ^  P0 H: R) h6 R; U9 |9 _* A3 a% Y
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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